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author | marha <marha@users.sourceforge.net> | 2011-09-12 11:27:51 +0200 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2011-09-12 11:27:51 +0200 |
commit | dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0 (patch) | |
tree | bdf833cc6a4fc9035411779e10dd9e8478201885 /libX11/src/Xrm.c | |
parent | 0b40f5f4b54453a77f4b09c431f8efc6875da61f (diff) | |
download | vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.tar.gz vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.tar.bz2 vcxsrv-dafebc5bb70303f0b5baf0b087cf4d9a64b5c7f0.zip |
Synchronised line endinge with release branch
Diffstat (limited to 'libX11/src/Xrm.c')
-rw-r--r-- | libX11/src/Xrm.c | 5320 |
1 files changed, 2660 insertions, 2660 deletions
diff --git a/libX11/src/Xrm.c b/libX11/src/Xrm.c index 7dff61e68..53467aedc 100644 --- a/libX11/src/Xrm.c +++ b/libX11/src/Xrm.c @@ -1,2660 +1,2660 @@ -
-/***********************************************************
-Copyright 1987, 1988, 1990 by Digital Equipment Corporation, Maynard
-
- All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its
-documentation for any purpose and without fee is hereby granted,
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-******************************************************************/
-/*
-
-Copyright 1987, 1988, 1990, 1998 The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice shall be included
-in all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
-OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of The Open Group shall
-not be used in advertising or otherwise to promote the sale, use or
-other dealings in this Software without prior written authorization
-from The Open Group.
-
-*/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <ctype.h>
-#include "Xlibint.h"
-#include <X11/Xresource.h>
-#include "Xlcint.h"
-#ifdef XTHREADS
-#include "locking.h"
-#endif
-#include <X11/Xos.h>
-#include <sys/stat.h>
-#include "Xresinternal.h"
-#include "Xresource.h"
-
-/*
-
-These Xrm routines allow very fast lookup of resources in the resource
-database. Several usage patterns are exploited:
-
-(1) Widgets get a lot of resources at one time. Rather than look up each from
-scratch, we can precompute the prioritized list of database levels once, then
-search for each resource starting at the beginning of the list.
-
-(2) Many database levels don't contain any leaf resource nodes. There is no
-point in looking for resources on a level that doesn't contain any. This
-information is kept on a per-level basis.
-
-(3) Sometimes the widget instance tree is structured such that you get the same
-class name repeated on the fully qualified widget name. This can result in the
-same database level occuring multiple times on the search list. The code below
-only checks to see if you get two identical search lists in a row, rather than
-look back through all database levels, but in practice this removes all
-duplicates I've ever observed.
-
-Joel McCormack
-
-*/
-
-/*
-
-The Xrm representation has been completely redesigned to substantially reduce
-memory and hopefully improve performance.
-
-The database is structured into two kinds of tables: LTables that contain
-only values, and NTables that contain only other tables.
-
-Some invariants:
-
-The next pointer of the top-level node table points to the top-level leaf
-table, if any.
-
-Within an LTable, for a given name, the tight value always precedes the
-loose value, and if both are present the loose value is always right after
-the tight value.
-
-Within an NTable, all of the entries for a given name are contiguous,
-in the order tight NTable, loose NTable, tight LTable, loose LTable.
-
-Bob Scheifler
-
-*/
-
-static XrmQuark XrmQString, XrmQANY;
-
-typedef Bool (*DBEnumProc)(
- XrmDatabase* /* db */,
- XrmBindingList /* bindings */,
- XrmQuarkList /* quarks */,
- XrmRepresentation* /* type */,
- XrmValue* /* value */,
- XPointer /* closure */
-);
-
-typedef struct _VEntry {
- struct _VEntry *next; /* next in chain */
- XrmQuark name; /* name of this entry */
- unsigned int tight:1; /* 1 if it is a tight binding */
- unsigned int string:1; /* 1 if type is String */
- unsigned int size:30; /* size of value */
-} VEntryRec, *VEntry;
-
-
-typedef struct _DEntry {
- VEntryRec entry; /* entry */
- XrmRepresentation type; /* representation type */
-} DEntryRec, *DEntry;
-
-/* the value is right after the structure */
-#define StringValue(ve) (XPointer)((ve) + 1)
-#define RepType(ve) ((DEntry)(ve))->type
-/* the value is right after the structure */
-#define DataValue(ve) (XPointer)(((DEntry)(ve)) + 1)
-#define RawValue(ve) (char *)((ve)->string ? StringValue(ve) : DataValue(ve))
-
-typedef struct _NTable {
- struct _NTable *next; /* next in chain */
- XrmQuark name; /* name of this entry */
- unsigned int tight:1; /* 1 if it is a tight binding */
- unsigned int leaf:1; /* 1 if children are values */
- unsigned int hasloose:1; /* 1 if has loose children */
- unsigned int hasany:1; /* 1 if has ANY entry */
- unsigned int pad:4; /* unused */
- unsigned int mask:8; /* hash size - 1 */
- unsigned int entries:16; /* number of children */
-} NTableRec, *NTable;
-
-/* the buckets are right after the structure */
-#define NodeBuckets(ne) ((NTable *)((ne) + 1))
-#define NodeHash(ne,q) NodeBuckets(ne)[(q) & (ne)->mask]
-
-/* leaf tables have an extra level of indirection for the buckets,
- * so that resizing can be done without invalidating a search list.
- * This is completely ugly, and wastes some memory, but the Xlib
- * spec doesn't really specify whether invalidation is OK, and the
- * old implementation did not invalidate.
- */
-typedef struct _LTable {
- NTableRec table;
- VEntry *buckets;
-} LTableRec, *LTable;
-
-#define LeafHash(le,q) (le)->buckets[(q) & (le)->table.mask]
-
-/* An XrmDatabase just holds a pointer to the first top-level table.
- * The type name is no longer descriptive, but better to not change
- * the Xresource.h header file. This type also gets used to define
- * XrmSearchList, which is a complete crock, but we'll just leave it
- * and caste types as required.
- */
-typedef struct _XrmHashBucketRec {
- NTable table;
- XPointer mbstate;
- XrmMethods methods;
-#ifdef XTHREADS
- LockInfoRec linfo;
-#endif
-} XrmHashBucketRec;
-
-/* closure used in get/put resource */
-typedef struct _VClosure {
- XrmRepresentation *type; /* type of value */
- XrmValuePtr value; /* value itself */
-} VClosureRec, *VClosure;
-
-/* closure used in get search list */
-typedef struct _SClosure {
- LTable *list; /* search list */
- int idx; /* index of last filled element */
- int limit; /* maximum index */
-} SClosureRec, *SClosure;
-
-/* placed in XrmSearchList to indicate next table is loose only */
-#define LOOSESEARCH ((LTable)1)
-
-/* closure used in enumerate database */
-typedef struct _EClosure {
- XrmDatabase db; /* the database */
- DBEnumProc proc; /* the user proc */
- XPointer closure; /* the user closure */
- XrmBindingList bindings; /* binding list */
- XrmQuarkList quarks; /* quark list */
- int mode; /* XrmEnum<kind> */
-} EClosureRec, *EClosure;
-
-/* types for typecasting ETable based functions to NTable based functions */
-typedef Bool (*getNTableSProcp)(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- SClosure closure);
-typedef Bool (*getNTableVProcp)(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- VClosure closure);
-typedef Bool (*getNTableEProcp)(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- register int level,
- EClosure closure);
-
-/* predicate to determine when to resize a hash table */
-#define GrowthPred(n,m) ((unsigned)(n) > (((m) + 1) << 2))
-
-#define GROW(prev) \
- if (GrowthPred((*prev)->entries, (*prev)->mask)) \
- GrowTable(prev)
-
-/* pick a reasonable value for maximum depth of resource database */
-#define MAXDBDEPTH 100
-
-/* macro used in get/search functions */
-
-/* find an entry named ename, with leafness given by leaf */
-#define NFIND(ename) \
- q = ename; \
- entry = NodeHash(table, q); \
- while (entry && entry->name != q) \
- entry = entry->next; \
- if (leaf && entry && !entry->leaf) { \
- entry = entry->next; \
- if (entry && !entry->leaf) \
- entry = entry->next; \
- if (entry && entry->name != q) \
- entry = (NTable)NULL; \
- }
-
-/* resourceQuarks keeps track of what quarks have been associated with values
- * in all LTables. If a quark has never been used in an LTable, we don't need
- * to bother looking for it.
- */
-
-static unsigned char *resourceQuarks = (unsigned char *)NULL;
-static XrmQuark maxResourceQuark = -1;
-
-/* determines if a quark has been used for a value in any database */
-#define IsResourceQuark(q) ((q) > 0 && (q) <= maxResourceQuark && \
- resourceQuarks[(q) >> 3] & (1 << ((q) & 7)))
-
-typedef unsigned char XrmBits;
-
-#define BSLASH ((XrmBits) (1 << 5))
-#define NORMAL ((XrmBits) (1 << 4))
-#define EOQ ((XrmBits) (1 << 3))
-#define SEP ((XrmBits) (1 << 2))
-#define ENDOF ((XrmBits) (1 << 1))
-#define SPACE (NORMAL|EOQ|SEP|(XrmBits)0)
-#define RSEP (NORMAL|EOQ|SEP|(XrmBits)1)
-#define EOS (EOQ|SEP|ENDOF|(XrmBits)0)
-#define EOL (EOQ|SEP|ENDOF|(XrmBits)1)
-#define BINDING (NORMAL|EOQ)
-#define ODIGIT (NORMAL|(XrmBits)1)
-
-#define next_char(ch,str) xrmtypes[(unsigned char)((ch) = *(++(str)))]
-#define next_mbchar(ch,len,str) xrmtypes[(unsigned char)(ch = (*db->methods->mbchar)(db->mbstate, str, &len), str += len, ch)]
-
-#define is_space(bits) ((bits) == SPACE)
-#define is_EOQ(bits) ((bits) & EOQ)
-#define is_EOF(bits) ((bits) == EOS)
-#define is_EOL(bits) ((bits) & ENDOF)
-#define is_binding(bits) ((bits) == BINDING)
-#define is_odigit(bits) ((bits) == ODIGIT)
-#define is_separator(bits) ((bits) & SEP)
-#define is_nonpcs(bits) (!(bits))
-#define is_normal(bits) ((bits) & NORMAL)
-#define is_simple(bits) ((bits) & (NORMAL|BSLASH))
-#define is_special(bits) ((bits) & (ENDOF|BSLASH))
-
-/* parsing types */
-static XrmBits const xrmtypes[256] = {
- EOS,0,0,0,0,0,0,0,
- 0,SPACE,EOL,0,0,
-#if defined(WIN32) || defined(__UNIXOS2__)
- EOL, /* treat CR the same as LF, just in case */
-#else
- 0,
-#endif
- 0,0,
- 0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,
- SPACE,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,BINDING,NORMAL,NORMAL,NORMAL,BINDING,NORMAL,
- ODIGIT,ODIGIT,ODIGIT,ODIGIT,ODIGIT,ODIGIT,ODIGIT,ODIGIT,
- NORMAL,NORMAL,RSEP,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,NORMAL,NORMAL,BSLASH,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,
- NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,0
- /* The rest will be automatically initialized to zero. */
-};
-
-void XrmInitialize(void)
-{
- XrmQString = XrmPermStringToQuark("String");
- XrmQANY = XrmPermStringToQuark("?");
-}
-
-XrmDatabase XrmGetDatabase(
- Display *display)
-{
- XrmDatabase retval;
- LockDisplay(display);
- retval = display->db;
- UnlockDisplay(display);
- return retval;
-}
-
-void XrmSetDatabase(
- Display *display,
- XrmDatabase database)
-{
- LockDisplay(display);
- /* destroy database if set up imlicitely by XGetDefault() */
- if (display->db && (display->flags & XlibDisplayDfltRMDB)) {
- XrmDestroyDatabase(display->db);
- display->flags &= ~XlibDisplayDfltRMDB;
- }
- display->db = database;
- UnlockDisplay(display);
-}
-
-void
-XrmStringToQuarkList(
- register _Xconst char *name,
- register XrmQuarkList quarks) /* RETURN */
-{
- register XrmBits bits;
- register Signature sig = 0;
- register char ch, *tname;
- register int i = 0;
-
- if ((tname = (char *)name)) {
- tname--;
- while (!is_EOF(bits = next_char(ch, tname))) {
- if (is_binding (bits)) {
- if (i) {
- /* Found a complete name */
- *quarks++ = _XrmInternalStringToQuark(name,tname - name,
- sig, False);
- i = 0;
- sig = 0;
- }
- name = tname+1;
- }
- else {
- sig = (sig << 1) + ch; /* Compute the signature. */
- i++;
- }
- }
- *quarks++ = _XrmInternalStringToQuark(name, tname - name, sig, False);
- }
- *quarks = NULLQUARK;
-}
-
-void
-XrmStringToBindingQuarkList(
- register _Xconst char *name,
- register XrmBindingList bindings, /* RETURN */
- register XrmQuarkList quarks) /* RETURN */
-{
- register XrmBits bits;
- register Signature sig = 0;
- register char ch, *tname;
- register XrmBinding binding;
- register int i = 0;
-
- if ((tname = (char *)name)) {
- tname--;
- binding = XrmBindTightly;
- while (!is_EOF(bits = next_char(ch, tname))) {
- if (is_binding (bits)) {
- if (i) {
- /* Found a complete name */
- *bindings++ = binding;
- *quarks++ = _XrmInternalStringToQuark(name, tname - name,
- sig, False);
-
- i = 0;
- sig = 0;
- binding = XrmBindTightly;
- }
- name = tname+1;
-
- if (ch == '*')
- binding = XrmBindLoosely;
- }
- else {
- sig = (sig << 1) + ch; /* Compute the signature. */
- i++;
- }
- }
- *bindings = binding;
- *quarks++ = _XrmInternalStringToQuark(name, tname - name, sig, False);
- }
- *quarks = NULLQUARK;
-}
-
-#ifdef DEBUG
-
-static void PrintQuarkList(
- XrmQuarkList quarks,
- FILE *stream)
-{
- Bool firstNameSeen;
-
- for (firstNameSeen = False; *quarks; quarks++) {
- if (firstNameSeen) {
- (void) fprintf(stream, ".");
- }
- firstNameSeen = True;
- (void) fputs(XrmQuarkToString(*quarks), stream);
- }
-} /* PrintQuarkList */
-
-#endif /* DEBUG */
-
-
-/*
- * Fallback methods for Xrm parsing.
- * Simulate a C locale. No state needed here.
- */
-
-static void
-c_mbnoop(
- XPointer state)
-{
-}
-
-static char
-c_mbchar(
- XPointer state,
- const char *str,
- int *lenp)
-{
- *lenp = 1;
- return *str;
-}
-
-static const char *
-c_lcname(
- XPointer state)
-{
- return "C";
-}
-
-static const XrmMethodsRec mb_methods = {
- c_mbnoop, /* mbinit */
- c_mbchar, /* mbchar */
- c_mbnoop, /* mbfinish */
- c_lcname, /* lcname */
- c_mbnoop /* destroy */
-};
-
-
-static XrmDatabase NewDatabase(void)
-{
- register XrmDatabase db;
-
- db = (XrmDatabase) Xmalloc(sizeof(XrmHashBucketRec));
- if (db) {
- _XCreateMutex(&db->linfo);
- db->table = (NTable)NULL;
- db->mbstate = (XPointer)NULL;
- db->methods = _XrmInitParseInfo(&db->mbstate);
- if (!db->methods)
- db->methods = &mb_methods;
- }
- return db;
-}
-
-/* move all values from ftable to ttable, and free ftable's buckets.
- * ttable is quaranteed empty to start with.
- */
-static void MoveValues(
- LTable ftable,
- register LTable ttable)
-{
- register VEntry fentry, nfentry;
- register VEntry *prev;
- register VEntry *bucket;
- register VEntry tentry;
- register int i;
-
- for (i = ftable->table.mask, bucket = ftable->buckets; i >= 0; i--) {
- for (fentry = *bucket++; fentry; fentry = nfentry) {
- prev = &LeafHash(ttable, fentry->name);
- tentry = *prev;
- *prev = fentry;
- /* chain on all with same name, to preserve invariant order */
- while ((nfentry = fentry->next) && nfentry->name == fentry->name)
- fentry = nfentry;
- fentry->next = tentry;
- }
- }
- Xfree((char *)ftable->buckets);
-}
-
-/* move all tables from ftable to ttable, and free ftable.
- * ttable is quaranteed empty to start with.
- */
-static void MoveTables(
- NTable ftable,
- register NTable ttable)
-{
- register NTable fentry, nfentry;
- register NTable *prev;
- register NTable *bucket;
- register NTable tentry;
- register int i;
-
- for (i = ftable->mask, bucket = NodeBuckets(ftable); i >= 0; i--) {
- for (fentry = *bucket++; fentry; fentry = nfentry) {
- prev = &NodeHash(ttable, fentry->name);
- tentry = *prev;
- *prev = fentry;
- /* chain on all with same name, to preserve invariant order */
- while ((nfentry = fentry->next) && nfentry->name == fentry->name)
- fentry = nfentry;
- fentry->next = tentry;
- }
- }
- Xfree((char *)ftable);
-}
-
-/* grow the table, based on current number of entries */
-static void GrowTable(
- NTable *prev)
-{
- register NTable table;
- register int i;
-
- table = *prev;
- i = table->mask;
- if (i == 255) /* biggest it gets */
- return;
- while (i < 255 && GrowthPred(table->entries, i))
- i = (i << 1) + 1;
- i++; /* i is now the new size */
- if (table->leaf) {
- register LTable ltable;
- LTableRec otable;
-
- ltable = (LTable)table;
- /* cons up a copy to make MoveValues look symmetric */
- otable = *ltable;
- ltable->buckets = Xcalloc(i, sizeof(VEntry));
- if (!ltable->buckets) {
- ltable->buckets = otable.buckets;
- return;
- }
- ltable->table.mask = i - 1;
- MoveValues(&otable, ltable);
- } else {
- register NTable ntable;
-
- ntable = Xcalloc(1, sizeof(NTableRec) + (i * sizeof(NTable)));
- if (!ntable)
- return;
- *ntable = *table;
- ntable->mask = i - 1;
- *prev = ntable;
- MoveTables(table, ntable);
- }
-}
-
-/* merge values from ftable into *pprev, destroy ftable in the process */
-static void MergeValues(
- LTable ftable,
- NTable *pprev,
- Bool override)
-{
- register VEntry fentry, tentry;
- register VEntry *prev;
- register LTable ttable;
- VEntry *bucket;
- int i;
- register XrmQuark q;
-
- ttable = (LTable)*pprev;
- if (ftable->table.hasloose)
- ttable->table.hasloose = 1;
- for (i = ftable->table.mask, bucket = ftable->buckets;
- i >= 0;
- i--, bucket++) {
- for (fentry = *bucket; fentry; ) {
- q = fentry->name;
- prev = &LeafHash(ttable, q);
- tentry = *prev;
- while (tentry && tentry->name != q)
- tentry = *(prev = &tentry->next);
- /* note: test intentionally uses fentry->name instead of q */
- /* permits serendipitous inserts */
- while (tentry && tentry->name == fentry->name) {
- /* if tentry is earlier, skip it */
- if (!fentry->tight && tentry->tight) {
- tentry = *(prev = &tentry->next);
- continue;
- }
- if (fentry->tight != tentry->tight) {
- /* no match, chain in fentry */
- *prev = fentry;
- prev = &fentry->next;
- fentry = *prev;
- *prev = tentry;
- ttable->table.entries++;
- } else if (override) {
- /* match, chain in fentry, splice out and free tentry */
- *prev = fentry;
- prev = &fentry->next;
- fentry = *prev;
- *prev = tentry->next;
- /* free the overridden entry */
- Xfree((char *)tentry);
- /* get next tentry */
- tentry = *prev;
- } else {
- /* match, discard fentry */
- prev = &tentry->next;
- tentry = fentry; /* use as a temp var */
- fentry = fentry->next;
- /* free the overpowered entry */
- Xfree((char *)tentry);
- /* get next tentry */
- tentry = *prev;
- }
- if (!fentry)
- break;
- }
- /* at this point, tentry cannot match any fentry named q */
- /* chain in all bindings together, preserve invariant order */
- while (fentry && fentry->name == q) {
- *prev = fentry;
- prev = &fentry->next;
- fentry = *prev;
- *prev = tentry;
- ttable->table.entries++;
- }
- }
- }
- Xfree((char *)ftable->buckets);
- Xfree((char *)ftable);
- /* resize if necessary, now that we're all done */
- GROW(pprev);
-}
-
-/* merge tables from ftable into *pprev, destroy ftable in the process */
-static void MergeTables(
- NTable ftable,
- NTable *pprev,
- Bool override)
-{
- register NTable fentry, tentry;
- NTable nfentry;
- register NTable *prev;
- register NTable ttable;
- NTable *bucket;
- int i;
- register XrmQuark q;
-
- ttable = *pprev;
- if (ftable->hasloose)
- ttable->hasloose = 1;
- if (ftable->hasany)
- ttable->hasany = 1;
- for (i = ftable->mask, bucket = NodeBuckets(ftable);
- i >= 0;
- i--, bucket++) {
- for (fentry = *bucket; fentry; ) {
- q = fentry->name;
- prev = &NodeHash(ttable, q);
- tentry = *prev;
- while (tentry && tentry->name != q)
- tentry = *(prev = &tentry->next);
- /* note: test intentionally uses fentry->name instead of q */
- /* permits serendipitous inserts */
- while (tentry && tentry->name == fentry->name) {
- /* if tentry is earlier, skip it */
- if ((fentry->leaf && !tentry->leaf) ||
- (!fentry->tight && tentry->tight &&
- (fentry->leaf || !tentry->leaf))) {
- tentry = *(prev = &tentry->next);
- continue;
- }
- nfentry = fentry->next;
- if (fentry->leaf != tentry->leaf ||
- fentry->tight != tentry->tight) {
- /* no match, just chain in */
- *prev = fentry;
- *(prev = &fentry->next) = tentry;
- ttable->entries++;
- } else {
- if (fentry->leaf)
- MergeValues((LTable)fentry, prev, override);
- else
- MergeTables(fentry, prev, override);
- /* bump to next tentry */
- tentry = *(prev = &(*prev)->next);
- }
- /* bump to next fentry */
- fentry = nfentry;
- if (!fentry)
- break;
- }
- /* at this point, tentry cannot match any fentry named q */
- /* chain in all bindings together, preserve invariant order */
- while (fentry && fentry->name == q) {
- *prev = fentry;
- prev = &fentry->next;
- fentry = *prev;
- *prev = tentry;
- ttable->entries++;
- }
- }
- }
- Xfree((char *)ftable);
- /* resize if necessary, now that we're all done */
- GROW(pprev);
-}
-
-void XrmCombineDatabase(
- XrmDatabase from, XrmDatabase *into,
- Bool override)
-{
- register NTable *prev;
- register NTable ftable, ttable, nftable;
-
- if (!*into) {
- *into = from;
- } else if (from) {
- _XLockMutex(&from->linfo);
- _XLockMutex(&(*into)->linfo);
- if ((ftable = from->table)) {
- prev = &(*into)->table;
- ttable = *prev;
- if (!ftable->leaf) {
- nftable = ftable->next;
- if (ttable && !ttable->leaf) {
- /* both have node tables, merge them */
- MergeTables(ftable, prev, override);
- /* bump to into's leaf table, if any */
- ttable = *(prev = &(*prev)->next);
- } else {
- /* into has no node table, link from's in */
- *prev = ftable;
- *(prev = &ftable->next) = ttable;
- }
- /* bump to from's leaf table, if any */
- ftable = nftable;
- } else {
- /* bump to into's leaf table, if any */
- if (ttable && !ttable->leaf)
- ttable = *(prev = &ttable->next);
- }
- if (ftable) {
- /* if into has a leaf, merge, else insert */
- if (ttable)
- MergeValues((LTable)ftable, prev, override);
- else
- *prev = ftable;
- }
- }
- (from->methods->destroy)(from->mbstate);
- _XUnlockMutex(&from->linfo);
- _XFreeMutex(&from->linfo);
- Xfree((char *)from);
- _XUnlockMutex(&(*into)->linfo);
- }
-}
-
-void XrmMergeDatabases(
- XrmDatabase from, XrmDatabase *into)
-{
- XrmCombineDatabase(from, into, True);
-}
-
-/* store a value in the database, overriding any existing entry */
-static void PutEntry(
- XrmDatabase db,
- XrmBindingList bindings,
- XrmQuarkList quarks,
- XrmRepresentation type,
- XrmValuePtr value)
-{
- register NTable *pprev, *prev;
- register NTable table;
- register XrmQuark q;
- register VEntry *vprev;
- register VEntry entry;
- NTable *nprev, *firstpprev;
-
-#define NEWTABLE(q,i) \
- table = (NTable)Xmalloc(sizeof(LTableRec)); \
- if (!table) \
- return; \
- table->name = q; \
- table->hasloose = 0; \
- table->hasany = 0; \
- table->mask = 0; \
- table->entries = 0; \
- if (quarks[i]) { \
- table->leaf = 0; \
- nprev = NodeBuckets(table); \
- } else { \
- table->leaf = 1; \
- if (!(nprev = (NTable *)Xmalloc(sizeof(VEntry *)))) {\
- Xfree(table); \
- return; \
- } \
- ((LTable)table)->buckets = (VEntry *)nprev; \
- } \
- *nprev = (NTable)NULL; \
- table->next = *prev; \
- *prev = table
-
- if (!db || !*quarks)
- return;
- table = *(prev = &db->table);
- /* if already at leaf, bump to the leaf table */
- if (!quarks[1] && table && !table->leaf)
- table = *(prev = &table->next);
- pprev = prev;
- if (!table || (quarks[1] && table->leaf)) {
- /* no top-level node table, create one and chain it in */
- NEWTABLE(NULLQUARK,1);
- table->tight = 1; /* arbitrary */
- prev = nprev;
- } else {
- /* search along until we need a value */
- while (quarks[1]) {
- q = *quarks;
- table = *(prev = &NodeHash(table, q));
- while (table && table->name != q)
- table = *(prev = &table->next);
- if (!table)
- break; /* not found */
- if (quarks[2]) {
- if (table->leaf)
- break; /* not found */
- } else {
- if (!table->leaf) {
- /* bump to leaf table, if any */
- table = *(prev = &table->next);
- if (!table || table->name != q)
- break; /* not found */
- if (!table->leaf) {
- /* bump to leaf table, if any */
- table = *(prev = &table->next);
- if (!table || table->name != q)
- break; /* not found */
- }
- }
- }
- if (*bindings == XrmBindTightly) {
- if (!table->tight)
- break; /* not found */
- } else {
- if (table->tight) {
- /* bump to loose table, if any */
- table = *(prev = &table->next);
- if (!table || table->name != q ||
- !quarks[2] != table->leaf)
- break; /* not found */
- }
- }
- /* found that one, bump to next quark */
- pprev = prev;
- quarks++;
- bindings++;
- }
- if (!quarks[1]) {
- /* found all the way to a leaf */
- q = *quarks;
- entry = *(vprev = &LeafHash((LTable)table, q));
- while (entry && entry->name != q)
- entry = *(vprev = &entry->next);
- /* if want loose and have tight, bump to next entry */
- if (entry && *bindings == XrmBindLoosely && entry->tight)
- entry = *(vprev = &entry->next);
- if (entry && entry->name == q &&
- (*bindings == XrmBindTightly) == entry->tight) {
- /* match, need to override */
- if ((type == XrmQString) == entry->string &&
- entry->size == value->size) {
- /* update type if not String, can be different */
- if (!entry->string)
- RepType(entry) = type;
- /* identical size, just overwrite value */
- memcpy(RawValue(entry), (char *)value->addr, value->size);
- return;
- }
- /* splice out and free old entry */
- *vprev = entry->next;
- Xfree((char *)entry);
- (*pprev)->entries--;
- }
- /* this is where to insert */
- prev = (NTable *)vprev;
- }
- }
- /* keep the top table, because we may have to grow it */
- firstpprev = pprev;
- /* iterate until we get to the leaf */
- while (quarks[1]) {
- /* build a new table and chain it in */
- NEWTABLE(*quarks,2);
- if (*quarks++ == XrmQANY)
- (*pprev)->hasany = 1;
- if (*bindings++ == XrmBindTightly) {
- table->tight = 1;
- } else {
- table->tight = 0;
- (*pprev)->hasloose = 1;
- }
- (*pprev)->entries++;
- pprev = prev;
- prev = nprev;
- }
- /* now allocate the value entry */
- entry = (VEntry)Xmalloc(((type == XrmQString) ?
- sizeof(VEntryRec) : sizeof(DEntryRec)) +
- value->size);
- if (!entry)
- return;
- entry->name = q = *quarks;
- if (*bindings == XrmBindTightly) {
- entry->tight = 1;
- } else {
- entry->tight = 0;
- (*pprev)->hasloose = 1;
- }
- /* chain it in, with a bit of type cast ugliness */
- entry->next = *((VEntry *)prev);
- *((VEntry *)prev) = entry;
- entry->size = value->size;
- if (type == XrmQString) {
- entry->string = 1;
- } else {
- entry->string = 0;
- RepType(entry) = type;
- }
- /* save a copy of the value */
- memcpy(RawValue(entry), (char *)value->addr, value->size);
- (*pprev)->entries++;
- /* this is a new leaf, need to remember it for search lists */
- if (q > maxResourceQuark) {
- unsigned oldsize = (maxResourceQuark + 1) >> 3;
- unsigned size = ((q | 0x7f) + 1) >> 3; /* reallocate in chunks */
- if (resourceQuarks) {
- unsigned char *prevQuarks = resourceQuarks;
-
- resourceQuarks = (unsigned char *)Xrealloc((char *)resourceQuarks,
- size);
- if (!resourceQuarks) {
- Xfree(prevQuarks);
- }
- } else
- resourceQuarks = (unsigned char *)Xmalloc(size);
- if (resourceQuarks) {
- bzero((char *)&resourceQuarks[oldsize], size - oldsize);
- maxResourceQuark = (size << 3) - 1;
- } else {
- maxResourceQuark = -1;
- }
- }
- if (q > 0 && resourceQuarks)
- resourceQuarks[q >> 3] |= 1 << (q & 0x7);
- GROW(firstpprev);
-
-#undef NEWTABLE
-}
-
-void XrmQPutResource(
- XrmDatabase *pdb,
- XrmBindingList bindings,
- XrmQuarkList quarks,
- XrmRepresentation type,
- XrmValuePtr value)
-{
- if (!*pdb) *pdb = NewDatabase();
- _XLockMutex(&(*pdb)->linfo);
- PutEntry(*pdb, bindings, quarks, type, value);
- _XUnlockMutex(&(*pdb)->linfo);
-}
-
-void
-XrmPutResource(
- XrmDatabase *pdb,
- _Xconst char *specifier,
- _Xconst char *type,
- XrmValuePtr value)
-{
- XrmBinding bindings[MAXDBDEPTH+1];
- XrmQuark quarks[MAXDBDEPTH+1];
-
- if (!*pdb) *pdb = NewDatabase();
- _XLockMutex(&(*pdb)->linfo);
- XrmStringToBindingQuarkList(specifier, bindings, quarks);
- PutEntry(*pdb, bindings, quarks, XrmStringToQuark(type), value);
- _XUnlockMutex(&(*pdb)->linfo);
-}
-
-void
-XrmQPutStringResource(
- XrmDatabase *pdb,
- XrmBindingList bindings,
- XrmQuarkList quarks,
- _Xconst char *str)
-{
- XrmValue value;
-
- if (!*pdb) *pdb = NewDatabase();
- value.addr = (XPointer) str;
- value.size = strlen(str)+1;
- _XLockMutex(&(*pdb)->linfo);
- PutEntry(*pdb, bindings, quarks, XrmQString, &value);
- _XUnlockMutex(&(*pdb)->linfo);
-}
-
-/* Function Name: GetDatabase
- * Description: Parses a string and stores it as a database.
- * Arguments: db - the database.
- * str - a pointer to the string containing the database.
- * filename - source filename, if any.
- * doall - whether to do all lines or just one
- */
-
-/*
- * This function is highly optimized to inline as much as possible.
- * Be very careful with modifications, or simplifications, as they
- * may adversely affect the performance.
- *
- * Chris Peterson, MIT X Consortium 5/17/90.
- */
-
-/*
- * Xlib spec says max 100 quarks in a lookup, will stop and return if
- * return if any single production's lhs has more than 100 components.
- */
-#define QLIST_SIZE 100
-
-/*
- * This should be big enough to handle things like the XKeysymDB or biggish
- * ~/.Xdefaults or app-defaults files. Anything bigger will be allocated on
- * the heap.
- */
-#define DEF_BUFF_SIZE 8192
-
-static void GetIncludeFile(
- XrmDatabase db,
- _Xconst char *base,
- _Xconst char *fname,
- int fnamelen);
-
-static void GetDatabase(
- XrmDatabase db,
- _Xconst register char *str,
- _Xconst char *filename,
- Bool doall)
-{
- char *rhs;
- char *lhs, lhs_s[DEF_BUFF_SIZE];
- XrmQuark quarks[QLIST_SIZE + 1]; /* allow for a terminal NullQuark */
- XrmBinding bindings[QLIST_SIZE + 1];
-
- register char *ptr;
- register XrmBits bits = 0;
- register char c;
- register Signature sig;
- register char *ptr_max;
- register int num_quarks;
- register XrmBindingList t_bindings;
-
- int len, alloc_chars;
- unsigned long str_len;
- XrmValue value;
- Bool only_pcs;
- Bool dolines;
-
- if (!db)
- return;
-
- /*
- * if strlen (str) < DEF_BUFF_SIZE allocate buffers on the stack for
- * speed otherwise malloc the buffer. From a buffer overflow standpoint
- * we can be sure that neither: a) a component on the lhs, or b) a
- * value on the rhs, will be longer than the overall length of str,
- * i.e. strlen(str).
- *
- * This should give good performance when parsing "*foo: bar" type
- * databases as might be passed with -xrm command line options; but
- * with larger databases, e.g. .Xdefaults, app-defaults, or KeysymDB
- * files, the size of the buffers will be overly large. One way
- * around this would be to double-parse each production with a resulting
- * performance hit. In any event we can be assured that a lhs component
- * name or a rhs value won't be longer than str itself.
- */
-
- str_len = strlen (str);
- if (DEF_BUFF_SIZE > str_len) lhs = lhs_s;
- else if ((lhs = (char*) Xmalloc (str_len)) == NULL)
- return;
-
- alloc_chars = DEF_BUFF_SIZE < str_len ? str_len : DEF_BUFF_SIZE;
- if ((rhs = (char*) Xmalloc (alloc_chars)) == NULL) {
- if (lhs != lhs_s) Xfree (lhs);
- return;
- }
-
- (*db->methods->mbinit)(db->mbstate);
- str--;
- dolines = True;
- while (!is_EOF(bits) && dolines) {
- dolines = doall;
-
- /*
- * First: Remove extra whitespace.
- */
-
- do {
- bits = next_char(c, str);
- } while is_space(bits);
-
- /*
- * Ignore empty lines.
- */
-
- if (is_EOL(bits))
- continue; /* start a new line. */
-
- /*
- * Second: check the first character in a line to see if it is
- * "!" signifying a comment, or "#" signifying a directive.
- */
-
- if (c == '!') { /* Comment, spin to next newline */
- while (is_simple(bits = next_char(c, str))) {}
- if (is_EOL(bits))
- continue;
- while (!is_EOL(bits = next_mbchar(c, len, str))) {}
- str--;
- continue; /* start a new line. */
- }
-
- if (c == '#') { /* Directive */
- /* remove extra whitespace */
- only_pcs = True;
- while (is_space(bits = next_char(c, str))) {};
- /* only "include" directive is currently defined */
- if (!strncmp(str, "include", 7)) {
- str += (7-1);
- /* remove extra whitespace */
- while (is_space(bits = next_char(c, str))) {};
- /* must have a starting " */
- if (c == '"') {
- _Xconst char *fname = str+1;
- len = 0;
- do {
- if (only_pcs) {
- bits = next_char(c, str);
- if (is_nonpcs(bits))
- only_pcs = False;
- }
- if (!only_pcs)
- bits = next_mbchar(c, len, str);
- } while (c != '"' && !is_EOL(bits));
- /* must have an ending " */
- if (c == '"')
- GetIncludeFile(db, filename, fname, str - len - fname);
- }
- }
- /* spin to next newline */
- if (only_pcs) {
- while (is_simple(bits))
- bits = next_char(c, str);
- if (is_EOL(bits))
- continue;
- }
- while (!is_EOL(bits))
- bits = next_mbchar(c, len, str);
- str--;
- continue; /* start a new line. */
- }
-
- /*
- * Third: loop through the LHS of the resource specification
- * storing characters and converting this to a Quark.
- */
-
- num_quarks = 0;
- t_bindings = bindings;
-
- sig = 0;
- ptr = lhs;
- *t_bindings = XrmBindTightly;
- for(;;) {
- if (!is_binding(bits)) {
- while (!is_EOQ(bits)) {
- *ptr++ = c;
- sig = (sig << 1) + c; /* Compute the signature. */
- bits = next_char(c, str);
- }
-
- quarks[num_quarks++] =
- _XrmInternalStringToQuark(lhs, ptr - lhs, sig, False);
-
- if (num_quarks > QLIST_SIZE) {
- Xfree(rhs);
- if (lhs != lhs_s) Xfree (lhs);
- (*db->methods->mbfinish)(db->mbstate);
- return;
- }
-
- if (is_separator(bits)) {
- if (!is_space(bits))
- break;
-
- /* Remove white space */
- do {
- *ptr++ = c;
- sig = (sig << 1) + c; /* Compute the signature. */
- } while (is_space(bits = next_char(c, str)));
-
- /*
- * The spec doesn't permit it, but support spaces
- * internal to resource name/class
- */
-
- if (is_separator(bits))
- break;
- num_quarks--;
- continue;
- }
-
- if (c == '.')
- *(++t_bindings) = XrmBindTightly;
- else
- *(++t_bindings) = XrmBindLoosely;
-
- sig = 0;
- ptr = lhs;
- }
- else {
- /*
- * Magic unspecified feature #254.
- *
- * If two separators appear with no Text between them then
- * ignore them.
- *
- * If anyone of those separators is a '*' then the binding
- * will be loose, otherwise it will be tight.
- */
-
- if (c == '*')
- *t_bindings = XrmBindLoosely;
- }
-
- bits = next_char(c, str);
- }
-
- quarks[num_quarks] = NULLQUARK;
-
- /*
- * Make sure that there is a ':' in this line.
- */
-
- if (c != ':') {
- char oldc;
-
- /*
- * A parsing error has occured, toss everything on the line
- * a new_line can still be escaped with a '\'.
- */
-
- while (is_normal(bits))
- bits = next_char(c, str);
- if (is_EOL(bits))
- continue;
- bits = next_mbchar(c, len, str);
- do {
- oldc = c;
- bits = next_mbchar(c, len, str);
- } while (c && (c != '\n' || oldc == '\\'));
- str--;
- continue;
- }
-
- /*
- * I now have a quark and binding list for the entire left hand
- * side. "c" currently points to the ":" separating the left hand
- * side for the right hand side. It is time to begin processing
- * the right hand side.
- */
-
- /*
- * Fourth: Remove more whitespace
- */
-
- for(;;) {
- if (is_space(bits = next_char(c, str)))
- continue;
- if (c != '\\')
- break;
- bits = next_char(c, str);
- if (c == '\n')
- continue;
- str--;
- bits = BSLASH;
- c = '\\';
- break;
- }
-
- /*
- * Fifth: Process the right hand side.
- */
-
- ptr = rhs;
- ptr_max = ptr + alloc_chars - 4;
- only_pcs = True;
- len = 1;
-
- for(;;) {
-
- /*
- * Tight loop for the normal case: Non backslash, non-end of value
- * character that will fit into the allocated buffer.
- */
-
- if (only_pcs) {
- while (is_normal(bits) && ptr < ptr_max) {
- *ptr++ = c;
- bits = next_char(c, str);
- }
- if (is_EOL(bits))
- break;
- if (is_nonpcs(bits)) {
- only_pcs = False;
- bits = next_mbchar(c, len, str);
- }
- }
- while (!is_special(bits) && ptr + len <= ptr_max) {
- len = -len;
- while (len)
- *ptr++ = str[len++];
- if (*str == '\0') {
- bits = EOS;
- break;
- }
- bits = next_mbchar(c, len, str);
- }
-
- if (is_EOL(bits)) {
- str--;
- break;
- }
-
- if (c == '\\') {
- /*
- * We need to do some magic after a backslash.
- */
- Bool read_next = True;
-
- if (only_pcs) {
- bits = next_char(c, str);
- if (is_nonpcs(bits))
- only_pcs = False;
- }
- if (!only_pcs)
- bits = next_mbchar(c, len, str);
-
- if (is_EOL(bits)) {
- if (is_EOF(bits))
- continue;
- } else if (c == 'n') {
- /*
- * "\n" means insert a newline.
- */
- *ptr++ = '\n';
- } else if (c == '\\') {
- /*
- * "\\" completes to just one backslash.
- */
- *ptr++ = '\\';
- } else {
- /*
- * pick up to three octal digits after the '\'.
- */
- char temp[3];
- int count = 0;
- while (is_odigit(bits) && count < 3) {
- temp[count++] = c;
- if (only_pcs) {
- bits = next_char(c, str);
- if (is_nonpcs(bits))
- only_pcs = False;
- }
- if (!only_pcs)
- bits = next_mbchar(c, len, str);
- }
-
- /*
- * If we found three digits then insert that octal code
- * into the value string as a character.
- */
-
- if (count == 3) {
- *ptr++ = (unsigned char) ((temp[0] - '0') * 0100 +
- (temp[1] - '0') * 010 +
- (temp[2] - '0'));
- }
- else {
- int tcount;
-
- /*
- * Otherwise just insert those characters into the
- * string, since no special processing is needed on
- * numerics we can skip the special processing.
- */
-
- for (tcount = 0; tcount < count; tcount++) {
- *ptr++ = temp[tcount]; /* print them in
- the correct order */
- }
- }
- read_next = False;
- }
- if (read_next) {
- if (only_pcs) {
- bits = next_char(c, str);
- if (is_nonpcs(bits))
- only_pcs = False;
- }
- if (!only_pcs)
- bits = next_mbchar(c, len, str);
- }
- }
-
- /*
- * It is important to make sure that there is room for at least
- * four more characters in the buffer, since I can add that
- * many characters into the buffer after a backslash has occured.
- */
-
- if (ptr + len > ptr_max) {
- char * temp_str;
-
- alloc_chars += BUFSIZ/10;
- temp_str = Xrealloc(rhs, sizeof(char) * alloc_chars);
-
- if (!temp_str) {
- Xfree(rhs);
- if (lhs != lhs_s) Xfree (lhs);
- (*db->methods->mbfinish)(db->mbstate);
- return;
- }
-
- ptr = temp_str + (ptr - rhs); /* reset pointer. */
- rhs = temp_str;
- ptr_max = rhs + alloc_chars - 4;
- }
- }
-
- /*
- * Lastly: Terminate the value string, and store this entry
- * into the database.
- */
-
- *ptr++ = '\0';
-
- /* Store it in database */
- value.size = ptr - rhs;
- value.addr = (XPointer) rhs;
-
- PutEntry(db, bindings, quarks, XrmQString, &value);
- }
-
- if (lhs != lhs_s) Xfree (lhs);
- Xfree (rhs);
-
- (*db->methods->mbfinish)(db->mbstate);
-}
-
-void
-XrmPutStringResource(
- XrmDatabase *pdb,
- _Xconst char*specifier,
- _Xconst char*str)
-{
- XrmValue value;
- XrmBinding bindings[MAXDBDEPTH+1];
- XrmQuark quarks[MAXDBDEPTH+1];
-
- if (!*pdb) *pdb = NewDatabase();
- XrmStringToBindingQuarkList(specifier, bindings, quarks);
- value.addr = (XPointer) str;
- value.size = strlen(str)+1;
- _XLockMutex(&(*pdb)->linfo);
- PutEntry(*pdb, bindings, quarks, XrmQString, &value);
- _XUnlockMutex(&(*pdb)->linfo);
-}
-
-
-void
-XrmPutLineResource(
- XrmDatabase *pdb,
- _Xconst char*line)
-{
- if (!*pdb) *pdb = NewDatabase();
- _XLockMutex(&(*pdb)->linfo);
- GetDatabase(*pdb, line, (char *)NULL, False);
- _XUnlockMutex(&(*pdb)->linfo);
-}
-
-XrmDatabase
-XrmGetStringDatabase(
- _Xconst char *data)
-{
- XrmDatabase db;
-
- db = NewDatabase();
- _XLockMutex(&db->linfo);
- GetDatabase(db, data, (char *)NULL, True);
- _XUnlockMutex(&db->linfo);
- return db;
-}
-
-/* Function Name: ReadInFile
- * Description: Reads the file into a buffer.
- * Arguments: filename - the name of the file.
- * Returns: An allocated string containing the contents of the file.
- */
-
-static char *
-ReadInFile(_Xconst char *filename)
-{
- register int fd, size;
- char * filebuf;
-
-#ifdef __UNIXOS2__
- filename = __XOS2RedirRoot(filename);
-#endif
-
- /*
- * MS-Windows and OS/2 note: Default open mode includes O_TEXT
- */
- if ( (fd = _XOpenFile (filename, O_RDONLY)) == -1 )
- return (char *)NULL;
-
- /*
- * MS-Windows and OS/2 note: depending on how the sources are
- * untarred, the newlines in resource files may or may not have
- * been expanded to CRLF. Either way the size returned by fstat
- * is sufficient to read the file into because in text-mode any
- * CRLFs in a file will be converted to newlines (LF) with the
- * result that the number of bytes actually read with be <=
- * to the size returned by fstat.
- */
- {
- struct stat status_buffer;
- if ( (fstat(fd, &status_buffer)) == -1 ) {
- close (fd);
- return (char *)NULL;
- } else
- size = status_buffer.st_size;
- }
-
- if (!(filebuf = Xmalloc(size + 1))) { /* leave room for '\0' */
- close(fd);
- return (char *)NULL;
- }
- size = read (fd, filebuf, size);
-
-#ifdef __UNIXOS2__
- { /* kill CRLF */
- int i,k;
- for (i=k=0; i<size; i++)
- if (filebuf[i] != 0x0d) {
- filebuf[k++] = filebuf[i];
- }
- filebuf[k] = 0;
- }
-#endif
-
- if (size < 0) {
- close (fd);
- Xfree(filebuf);
- return (char *)NULL;
- }
- close (fd);
-
- filebuf[size] = '\0'; /* NULL terminate it. */
- return filebuf;
-}
-
-static void
-GetIncludeFile(
- XrmDatabase db,
- _Xconst char *base,
- _Xconst char *fname,
- int fnamelen)
-{
- int len;
- char *str;
- char realfname[BUFSIZ];
-
- if (fnamelen <= 0 || fnamelen >= BUFSIZ)
- return;
- if (*fname != '/' && base && (str = strrchr(base, '/'))) {
- len = str - base + 1;
- if (len + fnamelen >= BUFSIZ)
- return;
- strncpy(realfname, base, len);
- strncpy(realfname + len, fname, fnamelen);
- realfname[len + fnamelen] = '\0';
- } else {
- strncpy(realfname, fname, fnamelen);
- realfname[fnamelen] = '\0';
- }
- if (!(str = ReadInFile(realfname)))
- return;
- GetDatabase(db, str, realfname, True);
- Xfree(str);
-}
-
-XrmDatabase
-XrmGetFileDatabase(
- _Xconst char *filename)
-{
- XrmDatabase db;
- char *str;
-
- if (!(str = ReadInFile(filename)))
- return (XrmDatabase)NULL;
-
- db = NewDatabase();
- _XLockMutex(&db->linfo);
- GetDatabase(db, str, filename, True);
- _XUnlockMutex(&db->linfo);
- Xfree(str);
- return db;
-}
-
-Status
-XrmCombineFileDatabase(
- _Xconst char *filename,
- XrmDatabase *target,
- Bool override)
-{
- XrmDatabase db;
- char *str;
-
- if (!(str = ReadInFile(filename)))
- return 0;
- if (override) {
- db = *target;
- if (!db)
- *target = db = NewDatabase();
- } else
- db = NewDatabase();
- _XLockMutex(&db->linfo);
- GetDatabase(db, str, filename, True);
- _XUnlockMutex(&db->linfo);
- Xfree(str);
- if (!override)
- XrmCombineDatabase(db, target, False);
- return 1;
-}
-
-/* call the user proc for every value in the table, arbitrary order.
- * stop if user proc returns True. level is current depth in database.
- */
-/*ARGSUSED*/
-static Bool EnumLTable(
- LTable table,
- XrmNameList names,
- XrmClassList classes,
- register int level,
- register EClosure closure)
-{
- register VEntry *bucket;
- register int i;
- register VEntry entry;
- XrmValue value;
- XrmRepresentation type;
- Bool tightOk;
-
- closure->bindings[level] = (table->table.tight ?
- XrmBindTightly : XrmBindLoosely);
- closure->quarks[level] = table->table.name;
- level++;
- tightOk = !*names;
- closure->quarks[level + 1] = NULLQUARK;
- for (i = table->table.mask, bucket = table->buckets;
- i >= 0;
- i--, bucket++) {
- for (entry = *bucket; entry; entry = entry->next) {
- if (entry->tight && !tightOk)
- continue;
- closure->bindings[level] = (entry->tight ?
- XrmBindTightly : XrmBindLoosely);
- closure->quarks[level] = entry->name;
- value.size = entry->size;
- if (entry->string) {
- type = XrmQString;
- value.addr = StringValue(entry);
- } else {
- type = RepType(entry);
- value.addr = DataValue(entry);
- }
- if ((*closure->proc)(&closure->db, closure->bindings+1,
- closure->quarks+1, &type, &value,
- closure->closure))
- return True;
- }
- }
- return False;
-}
-
-static Bool EnumAllNTable(
- NTable table,
- register int level,
- register EClosure closure)
-{
- register NTable *bucket;
- register int i;
- register NTable entry;
- XrmQuark empty = NULLQUARK;
-
- if (level >= MAXDBDEPTH)
- return False;
- for (i = table->mask, bucket = NodeBuckets(table);
- i >= 0;
- i--, bucket++) {
- for (entry = *bucket; entry; entry = entry->next) {
- if (entry->leaf) {
- if (EnumLTable((LTable)entry, &empty, &empty, level, closure))
- return True;
- } else {
- closure->bindings[level] = (entry->tight ?
- XrmBindTightly : XrmBindLoosely);
- closure->quarks[level] = entry->name;
- if (EnumAllNTable(entry, level+1, closure))
- return True;
- }
- }
- }
- return False;
-}
-
-/* recurse on every table in the table, arbitrary order.
- * stop if user proc returns True. level is current depth in database.
- */
-static Bool EnumNTable(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- register int level,
- register EClosure closure)
-{
- register NTable entry;
- register XrmQuark q;
- register unsigned int leaf;
- Bool (*get)(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- register int level,
- EClosure closure);
- Bool bilevel;
-
-/* find entries named ename, leafness leaf, tight or loose, and call get */
-#define ITIGHTLOOSE(ename) \
- NFIND(ename); \
- if (entry) { \
- if (leaf == entry->leaf) { \
- if (!leaf && !entry->tight && entry->next && \
- entry->next->name == q && entry->next->tight && \
- (bilevel || entry->next->hasloose) && \
- EnumLTable((LTable)entry->next, names+1, classes+1, \
- level, closure)) \
- return True; \
- if ((*get)(entry, names+1, classes+1, level, closure)) \
- return True; \
- if (entry->tight && (entry = entry->next) && \
- entry->name == q && leaf == entry->leaf && \
- (*get)(entry, names+1, classes+1, level, closure)) \
- return True; \
- } else if (entry->leaf) { \
- if ((bilevel || entry->hasloose) && \
- EnumLTable((LTable)entry, names+1, classes+1, level, closure))\
- return True; \
- if (entry->tight && (entry = entry->next) && \
- entry->name == q && (bilevel || entry->hasloose) && \
- EnumLTable((LTable)entry, names+1, classes+1, level, closure))\
- return True; \
- } \
- }
-
-/* find entries named ename, leafness leaf, loose only, and call get */
-#define ILOOSE(ename) \
- NFIND(ename); \
- if (entry && entry->tight && (entry = entry->next) && entry->name != q) \
- entry = (NTable)NULL; \
- if (entry) { \
- if (leaf == entry->leaf) { \
- if ((*get)(entry, names+1, classes+1, level, closure)) \
- return True; \
- } else if (entry->leaf && (bilevel || entry->hasloose)) { \
- if (EnumLTable((LTable)entry, names+1, classes+1, level, closure))\
- return True; \
- } \
- }
-
- if (level >= MAXDBDEPTH)
- return False;
- closure->bindings[level] = (table->tight ?
- XrmBindTightly : XrmBindLoosely);
- closure->quarks[level] = table->name;
- level++;
- if (!*names) {
- if (EnumAllNTable(table, level, closure))
- return True;
- } else {
- if (names[1] || closure->mode == XrmEnumAllLevels) {
- get = EnumNTable; /* recurse */
- leaf = 0;
- bilevel = !names[1];
- } else {
- get = (getNTableEProcp)EnumLTable; /* bottom of recursion */
- leaf = 1;
- bilevel = False;
- }
- if (table->hasloose && closure->mode == XrmEnumAllLevels) {
- NTable *bucket;
- int i;
- XrmQuark empty = NULLQUARK;
-
- for (i = table->mask, bucket = NodeBuckets(table);
- i >= 0;
- i--, bucket++) {
- q = NULLQUARK;
- for (entry = *bucket; entry; entry = entry->next) {
- if (!entry->tight && entry->name != q &&
- entry->name != *names && entry->name != *classes) {
- q = entry->name;
- if (entry->leaf) {
- if (EnumLTable((LTable)entry, &empty, &empty,
- level, closure))
- return True;
- } else {
- if (EnumNTable(entry, &empty, &empty,
- level, closure))
- return True;
- }
- }
- }
- }
- }
-
- ITIGHTLOOSE(*names); /* do name, tight and loose */
- ITIGHTLOOSE(*classes); /* do class, tight and loose */
- if (table->hasany) {
- ITIGHTLOOSE(XrmQANY); /* do ANY, tight and loose */
- }
- if (table->hasloose) {
- while (1) {
- names++;
- classes++;
- if (!*names)
- break;
- if (!names[1] && closure->mode != XrmEnumAllLevels) {
- get = (getNTableEProcp)EnumLTable; /* bottom of recursion */
- leaf = 1;
- }
- ILOOSE(*names); /* loose names */
- ILOOSE(*classes); /* loose classes */
- if (table->hasany) {
- ILOOSE(XrmQANY); /* loose ANY */
- }
- }
- names--;
- classes--;
- }
- }
- /* now look for matching leaf nodes */
- entry = table->next;
- if (!entry)
- return False;
- if (entry->leaf) {
- if (entry->tight && !table->tight)
- entry = entry->next;
- } else {
- entry = entry->next;
- if (!entry || !entry->tight)
- return False;
- }
- if (!entry || entry->name != table->name)
- return False;
- /* found one */
- level--;
- if ((!*names || entry->hasloose) &&
- EnumLTable((LTable)entry, names, classes, level, closure))
- return True;
- if (entry->tight && entry == table->next && (entry = entry->next) &&
- entry->name == table->name && (!*names || entry->hasloose))
- return EnumLTable((LTable)entry, names, classes, level, closure);
- return False;
-
-#undef ITIGHTLOOSE
-#undef ILOOSE
-}
-
-/* call the proc for every value in the database, arbitrary order.
- * stop if the proc returns True.
- */
-Bool XrmEnumerateDatabase(
- XrmDatabase db,
- XrmNameList names,
- XrmClassList classes,
- int mode,
- DBEnumProc proc,
- XPointer closure)
-{
- XrmBinding bindings[MAXDBDEPTH+2];
- XrmQuark quarks[MAXDBDEPTH+2];
- register NTable table;
- EClosureRec eclosure;
- Bool retval = False;
-
- if (!db)
- return False;
- _XLockMutex(&db->linfo);
- eclosure.db = db;
- eclosure.proc = proc;
- eclosure.closure = closure;
- eclosure.bindings = bindings;
- eclosure.quarks = quarks;
- eclosure.mode = mode;
- table = db->table;
- if (table && !table->leaf && !*names && mode == XrmEnumOneLevel)
- table = table->next;
- if (table) {
- if (!table->leaf)
- retval = EnumNTable(table, names, classes, 0, &eclosure);
- else
- retval = EnumLTable((LTable)table, names, classes, 0, &eclosure);
- }
- _XUnlockMutex(&db->linfo);
- return retval;
-}
-
-static void PrintBindingQuarkList(
- XrmBindingList bindings,
- XrmQuarkList quarks,
- FILE *stream)
-{
- Bool firstNameSeen;
-
- for (firstNameSeen = False; *quarks; bindings++, quarks++) {
- if (*bindings == XrmBindLoosely) {
- (void) fprintf(stream, "*");
- } else if (firstNameSeen) {
- (void) fprintf(stream, ".");
- }
- firstNameSeen = True;
- (void) fputs(XrmQuarkToString(*quarks), stream);
- }
-}
-
-/* output out the entry in correct file syntax */
-/*ARGSUSED*/
-static Bool DumpEntry(
- XrmDatabase *db,
- XrmBindingList bindings,
- XrmQuarkList quarks,
- XrmRepresentation *type,
- XrmValuePtr value,
- XPointer data)
-{
- FILE *stream = (FILE *)data;
- register unsigned int i;
- register char *s;
- register char c;
-
- if (*type != XrmQString)
- (void) putc('!', stream);
- PrintBindingQuarkList(bindings, quarks, stream);
- s = value->addr;
- i = value->size;
- if (*type == XrmQString) {
- (void) fputs(":\t", stream);
- if (i)
- i--;
- }
- else
- (void) fprintf(stream, "=%s:\t", XrmRepresentationToString(*type));
- if (i && (*s == ' ' || *s == '\t'))
- (void) putc('\\', stream); /* preserve leading whitespace */
- while (i--) {
- c = *s++;
- if (c == '\n') {
- if (i)
- (void) fputs("\\n\\\n", stream);
- else
- (void) fputs("\\n", stream);
- } else if (c == '\\')
- (void) fputs("\\\\", stream);
- else if ((c < ' ' && c != '\t') ||
- ((unsigned char)c >= 0x7f && (unsigned char)c < 0xa0))
- (void) fprintf(stream, "\\%03o", (unsigned char)c);
- else
- (void) putc(c, stream);
- }
- (void) putc('\n', stream);
- return ferror(stream) != 0;
-}
-
-#ifdef DEBUG
-
-void PrintTable(
- NTable table,
- FILE *file)
-{
- XrmBinding bindings[MAXDBDEPTH+1];
- XrmQuark quarks[MAXDBDEPTH+1];
- EClosureRec closure;
- XrmQuark empty = NULLQUARK;
-
- closure.db = (XrmDatabase)NULL;
- closure.proc = DumpEntry;
- closure.closure = (XPointer)file;
- closure.bindings = bindings;
- closure.quarks = quarks;
- closure.mode = XrmEnumAllLevels;
- if (table->leaf)
- EnumLTable((LTable)table, &empty, &empty, 0, &closure);
- else
- EnumNTable(table, &empty, &empty, 0, &closure);
-}
-
-#endif /* DEBUG */
-
-void
-XrmPutFileDatabase(
- XrmDatabase db,
- _Xconst char *fileName)
-{
- FILE *file;
- XrmQuark empty = NULLQUARK;
-
- if (!db) return;
- if (!(file = fopen(fileName, "w"))) return;
- if (XrmEnumerateDatabase(db, &empty, &empty, XrmEnumAllLevels,
- DumpEntry, (XPointer) file))
- unlink((char *)fileName);
- fclose(file);
-}
-
-/* macros used in get/search functions */
-
-/* find entries named ename, leafness leaf, tight or loose, and call get */
-#define GTIGHTLOOSE(ename,looseleaf) \
- NFIND(ename); \
- if (entry) { \
- if (leaf == entry->leaf) { \
- if (!leaf && !entry->tight && entry->next && \
- entry->next->name == q && entry->next->tight && \
- entry->next->hasloose && \
- looseleaf((LTable)entry->next, names+1, classes+1, closure)) \
- return True; \
- if ((*get)(entry, names+1, classes+1, closure)) \
- return True; \
- if (entry->tight && (entry = entry->next) && \
- entry->name == q && leaf == entry->leaf && \
- (*get)(entry, names+1, classes+1, closure)) \
- return True; \
- } else if (entry->leaf) { \
- if (entry->hasloose && \
- looseleaf((LTable)entry, names+1, classes+1, closure)) \
- return True; \
- if (entry->tight && (entry = entry->next) && \
- entry->name == q && entry->hasloose && \
- looseleaf((LTable)entry, names+1, classes+1, closure)) \
- return True; \
- } \
- }
-
-/* find entries named ename, leafness leaf, loose only, and call get */
-#define GLOOSE(ename,looseleaf) \
- NFIND(ename); \
- if (entry && entry->tight && (entry = entry->next) && entry->name != q) \
- entry = (NTable)NULL; \
- if (entry) { \
- if (leaf == entry->leaf) { \
- if ((*get)(entry, names+1, classes+1, closure)) \
- return True; \
- } else if (entry->leaf && entry->hasloose) { \
- if (looseleaf((LTable)entry, names+1, classes+1, closure)) \
- return True; \
- } \
- }
-
-/* add tight/loose entry to the search list, return True if list is full */
-/*ARGSUSED*/
-static Bool AppendLEntry(
- LTable table,
- XrmNameList names,
- XrmClassList classes,
- register SClosure closure)
-{
- /* check for duplicate */
- if (closure->idx >= 0 && closure->list[closure->idx] == table)
- return False;
- if (closure->idx == closure->limit)
- return True;
- /* append it */
- closure->idx++;
- closure->list[closure->idx] = table;
- return False;
-}
-
-/* add loose entry to the search list, return True if list is full */
-/*ARGSUSED*/
-static Bool AppendLooseLEntry(
- LTable table,
- XrmNameList names,
- XrmClassList classes,
- register SClosure closure)
-{
- /* check for duplicate */
- if (closure->idx >= 0 && closure->list[closure->idx] == table)
- return False;
- if (closure->idx >= closure->limit - 1)
- return True;
- /* append it */
- closure->idx++;
- closure->list[closure->idx] = LOOSESEARCH;
- closure->idx++;
- closure->list[closure->idx] = table;
- return False;
-}
-
-/* search for a leaf table */
-static Bool SearchNEntry(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- SClosure closure)
-{
- register NTable entry;
- register XrmQuark q;
- register unsigned int leaf;
- Bool (*get)(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- SClosure closure);
-
- if (names[1]) {
- get = SearchNEntry; /* recurse */
- leaf = 0;
- } else {
- get = (getNTableSProcp)AppendLEntry; /* bottom of recursion */
- leaf = 1;
- }
- GTIGHTLOOSE(*names, AppendLooseLEntry); /* do name, tight and loose */
- GTIGHTLOOSE(*classes, AppendLooseLEntry); /* do class, tight and loose */
- if (table->hasany) {
- GTIGHTLOOSE(XrmQANY, AppendLooseLEntry); /* do ANY, tight and loose */
- }
- if (table->hasloose) {
- while (1) {
- names++;
- classes++;
- if (!*names)
- break;
- if (!names[1]) {
- get = (getNTableSProcp)AppendLEntry; /* bottom of recursion */
- leaf = 1;
- }
- GLOOSE(*names, AppendLooseLEntry); /* loose names */
- GLOOSE(*classes, AppendLooseLEntry); /* loose classes */
- if (table->hasany) {
- GLOOSE(XrmQANY, AppendLooseLEntry); /* loose ANY */
- }
- }
- }
- /* now look for matching leaf nodes */
- entry = table->next;
- if (!entry)
- return False;
- if (entry->leaf) {
- if (entry->tight && !table->tight)
- entry = entry->next;
- } else {
- entry = entry->next;
- if (!entry || !entry->tight)
- return False;
- }
- if (!entry || entry->name != table->name)
- return False;
- /* found one */
- if (entry->hasloose &&
- AppendLooseLEntry((LTable)entry, names, classes, closure))
- return True;
- if (entry->tight && entry == table->next && (entry = entry->next) &&
- entry->name == table->name && entry->hasloose)
- return AppendLooseLEntry((LTable)entry, names, classes, closure);
- return False;
-}
-
-Bool XrmQGetSearchList(
- XrmDatabase db,
- XrmNameList names,
- XrmClassList classes,
- XrmSearchList searchList, /* RETURN */
- int listLength)
-{
- register NTable table;
- SClosureRec closure;
-
- if (listLength <= 0)
- return False;
- closure.list = (LTable *)searchList;
- closure.idx = -1;
- closure.limit = listLength - 2;
- if (db) {
- _XLockMutex(&db->linfo);
- table = db->table;
- if (*names) {
- if (table && !table->leaf) {
- if (SearchNEntry(table, names, classes, &closure)) {
- _XUnlockMutex(&db->linfo);
- return False;
- }
- } else if (table && table->hasloose &&
- AppendLooseLEntry((LTable)table, names, classes,
- &closure)) {
- _XUnlockMutex(&db->linfo);
- return False;
- }
- } else {
- if (table && !table->leaf)
- table = table->next;
- if (table &&
- AppendLEntry((LTable)table, names, classes, &closure)) {
- _XUnlockMutex(&db->linfo);
- return False;
- }
- }
- _XUnlockMutex(&db->linfo);
- }
- closure.list[closure.idx + 1] = (LTable)NULL;
- return True;
-}
-
-Bool XrmQGetSearchResource(
- XrmSearchList searchList,
- register XrmName name,
- register XrmClass class,
- XrmRepresentation *pType, /* RETURN */
- XrmValue *pValue) /* RETURN */
-{
- register LTable *list;
- register LTable table;
- register VEntry entry = NULL;
- int flags;
-
-/* find tight or loose entry */
-#define VTIGHTLOOSE(q) \
- entry = LeafHash(table, q); \
- while (entry && entry->name != q) \
- entry = entry->next; \
- if (entry) \
- break
-
-/* find loose entry */
-#define VLOOSE(q) \
- entry = LeafHash(table, q); \
- while (entry && entry->name != q) \
- entry = entry->next; \
- if (entry) { \
- if (!entry->tight) \
- break; \
- if ((entry = entry->next) && entry->name == q) \
- break; \
- }
-
- list = (LTable *)searchList;
- /* figure out which combination of name and class we need to search for */
- flags = 0;
- if (IsResourceQuark(name))
- flags = 2;
- if (IsResourceQuark(class))
- flags |= 1;
- if (!flags) {
- /* neither name nor class has ever been used to name a resource */
- table = (LTable)NULL;
- } else if (flags == 3) {
- /* both name and class */
- while ((table = *list++)) {
- if (table != LOOSESEARCH) {
- VTIGHTLOOSE(name); /* do name, tight and loose */
- VTIGHTLOOSE(class); /* do class, tight and loose */
- } else {
- table = *list++;
- VLOOSE(name); /* do name, loose only */
- VLOOSE(class); /* do class, loose only */
- }
- }
- } else {
- /* just one of name or class */
- if (flags == 1)
- name = class;
- while ((table = *list++)) {
- if (table != LOOSESEARCH) {
- VTIGHTLOOSE(name); /* tight and loose */
- } else {
- table = *list++;
- VLOOSE(name); /* loose only */
- }
- }
- }
- if (table) {
- /* found a match */
- if (entry->string) {
- *pType = XrmQString;
- pValue->addr = StringValue(entry);
- } else {
- *pType = RepType(entry);
- pValue->addr = DataValue(entry);
- }
- pValue->size = entry->size;
- return True;
- }
- *pType = NULLQUARK;
- pValue->addr = (XPointer)NULL;
- pValue->size = 0;
- return False;
-
-#undef VTIGHTLOOSE
-#undef VLOOSE
-}
-
-/* look for a tight/loose value */
-static Bool GetVEntry(
- LTable table,
- XrmNameList names,
- XrmClassList classes,
- VClosure closure)
-{
- register VEntry entry;
- register XrmQuark q;
-
- /* try name first */
- q = *names;
- entry = LeafHash(table, q);
- while (entry && entry->name != q)
- entry = entry->next;
- if (!entry) {
- /* not found, try class */
- q = *classes;
- entry = LeafHash(table, q);
- while (entry && entry->name != q)
- entry = entry->next;
- if (!entry)
- return False;
- }
- if (entry->string) {
- *closure->type = XrmQString;
- closure->value->addr = StringValue(entry);
- } else {
- *closure->type = RepType(entry);
- closure->value->addr = DataValue(entry);
- }
- closure->value->size = entry->size;
- return True;
-}
-
-/* look for a loose value */
-static Bool GetLooseVEntry(
- LTable table,
- XrmNameList names,
- XrmClassList classes,
- VClosure closure)
-{
- register VEntry entry;
- register XrmQuark q;
-
-#define VLOOSE(ename) \
- q = ename; \
- entry = LeafHash(table, q); \
- while (entry && entry->name != q) \
- entry = entry->next; \
- if (entry && entry->tight && (entry = entry->next) && entry->name != q) \
- entry = (VEntry)NULL;
-
- /* bump to last component */
- while (names[1]) {
- names++;
- classes++;
- }
- VLOOSE(*names); /* do name, loose only */
- if (!entry) {
- VLOOSE(*classes); /* do class, loose only */
- if (!entry)
- return False;
- }
- if (entry->string) {
- *closure->type = XrmQString;
- closure->value->addr = StringValue(entry);
- } else {
- *closure->type = RepType(entry);
- closure->value->addr = DataValue(entry);
- }
- closure->value->size = entry->size;
- return True;
-
-#undef VLOOSE
-}
-
-/* recursive search for a value */
-static Bool GetNEntry(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- VClosure closure)
-{
- register NTable entry;
- register XrmQuark q;
- register unsigned int leaf;
- Bool (*get)(
- NTable table,
- XrmNameList names,
- XrmClassList classes,
- VClosure closure);
- NTable otable;
-
- if (names[2]) {
- get = GetNEntry; /* recurse */
- leaf = 0;
- } else {
- get = (getNTableVProcp)GetVEntry; /* bottom of recursion */
- leaf = 1;
- }
- GTIGHTLOOSE(*names, GetLooseVEntry); /* do name, tight and loose */
- GTIGHTLOOSE(*classes, GetLooseVEntry); /* do class, tight and loose */
- if (table->hasany) {
- GTIGHTLOOSE(XrmQANY, GetLooseVEntry); /* do ANY, tight and loose */
- }
- if (table->hasloose) {
- while (1) {
- names++;
- classes++;
- if (!names[1])
- break;
- if (!names[2]) {
- get = (getNTableVProcp)GetVEntry; /* bottom of recursion */
- leaf = 1;
- }
- GLOOSE(*names, GetLooseVEntry); /* do name, loose only */
- GLOOSE(*classes, GetLooseVEntry); /* do class, loose only */
- if (table->hasany) {
- GLOOSE(XrmQANY, GetLooseVEntry); /* do ANY, loose only */
- }
- }
- }
- /* look for matching leaf tables */
- otable = table;
- table = table->next;
- if (!table)
- return False;
- if (table->leaf) {
- if (table->tight && !otable->tight)
- table = table->next;
- } else {
- table = table->next;
- if (!table || !table->tight)
- return False;
- }
- if (!table || table->name != otable->name)
- return False;
- /* found one */
- if (table->hasloose &&
- GetLooseVEntry((LTable)table, names, classes, closure))
- return True;
- if (table->tight && table == otable->next) {
- table = table->next;
- if (table && table->name == otable->name && table->hasloose)
- return GetLooseVEntry((LTable)table, names, classes, closure);
- }
- return False;
-}
-
-Bool XrmQGetResource(
- XrmDatabase db,
- XrmNameList names,
- XrmClassList classes,
- XrmRepresentation *pType, /* RETURN */
- XrmValuePtr pValue) /* RETURN */
-{
- register NTable table;
- VClosureRec closure;
-
- if (db && *names) {
- _XLockMutex(&db->linfo);
- closure.type = pType;
- closure.value = pValue;
- table = db->table;
- if (names[1]) {
- if (table && !table->leaf) {
- if (GetNEntry(table, names, classes, &closure)) {
- _XUnlockMutex(&db->linfo);
- return True;
- }
- } else if (table && table->hasloose &&
- GetLooseVEntry((LTable)table, names, classes, &closure)) {
- _XUnlockMutex (&db->linfo);
- return True;
- }
- } else {
- if (table && !table->leaf)
- table = table->next;
- if (table && GetVEntry((LTable)table, names, classes, &closure)) {
- _XUnlockMutex(&db->linfo);
- return True;
- }
- }
- _XUnlockMutex(&db->linfo);
- }
- *pType = NULLQUARK;
- pValue->addr = (XPointer)NULL;
- pValue->size = 0;
- return False;
-}
-
-Bool
-XrmGetResource(XrmDatabase db, _Xconst char *name_str, _Xconst char *class_str,
- XrmString *pType_str, XrmValuePtr pValue)
-{
- XrmName names[MAXDBDEPTH+1];
- XrmClass classes[MAXDBDEPTH+1];
- XrmRepresentation fromType;
- Bool result;
-
- XrmStringToNameList(name_str, names);
- XrmStringToClassList(class_str, classes);
- result = XrmQGetResource(db, names, classes, &fromType, pValue);
- (*pType_str) = XrmQuarkToString(fromType);
- return result;
-}
-
-/* destroy all values, plus table itself */
-static void DestroyLTable(
- LTable table)
-{
- register int i;
- register VEntry *buckets;
- register VEntry entry, next;
-
- buckets = table->buckets;
- for (i = table->table.mask; i >= 0; i--, buckets++) {
- for (next = *buckets; (entry = next); ) {
- next = entry->next;
- Xfree((char *)entry);
- }
- }
- Xfree((char *)table->buckets);
- Xfree((char *)table);
-}
-
-/* destroy all contained tables, plus table itself */
-static void DestroyNTable(
- NTable table)
-{
- register int i;
- register NTable *buckets;
- register NTable entry, next;
-
- buckets = NodeBuckets(table);
- for (i = table->mask; i >= 0; i--, buckets++) {
- for (next = *buckets; (entry = next); ) {
- next = entry->next;
- if (entry->leaf)
- DestroyLTable((LTable)entry);
- else
- DestroyNTable(entry);
- }
- }
- Xfree((char *)table);
-}
-
-const char *
-XrmLocaleOfDatabase(
- XrmDatabase db)
-{
- const char* retval;
- _XLockMutex(&db->linfo);
- retval = (*db->methods->lcname)(db->mbstate);
- _XUnlockMutex(&db->linfo);
- return retval;
-}
-
-void XrmDestroyDatabase(
- XrmDatabase db)
-{
- register NTable table, next;
-
- if (db) {
- _XLockMutex(&db->linfo);
- for (next = db->table; (table = next); ) {
- next = table->next;
- if (table->leaf)
- DestroyLTable((LTable)table);
- else
- DestroyNTable(table);
- }
- _XUnlockMutex(&db->linfo);
- _XFreeMutex(&db->linfo);
- (*db->methods->destroy)(db->mbstate);
- Xfree((char *)db);
- }
-}
+ +/*********************************************************** +Copyright 1987, 1988, 1990 by Digital Equipment Corporation, Maynard + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name Digital not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS +SOFTWARE. + +******************************************************************/ +/* + +Copyright 1987, 1988, 1990, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +The above copyright notice and this permission notice shall be included +in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR +OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, +ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR +OTHER DEALINGS IN THE SOFTWARE. + +Except as contained in this notice, the name of The Open Group shall +not be used in advertising or otherwise to promote the sale, use or +other dealings in this Software without prior written authorization +from The Open Group. + +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <ctype.h> +#include "Xlibint.h" +#include <X11/Xresource.h> +#include "Xlcint.h" +#ifdef XTHREADS +#include "locking.h" +#endif +#include <X11/Xos.h> +#include <sys/stat.h> +#include "Xresinternal.h" +#include "Xresource.h" + +/* + +These Xrm routines allow very fast lookup of resources in the resource +database. Several usage patterns are exploited: + +(1) Widgets get a lot of resources at one time. Rather than look up each from +scratch, we can precompute the prioritized list of database levels once, then +search for each resource starting at the beginning of the list. + +(2) Many database levels don't contain any leaf resource nodes. There is no +point in looking for resources on a level that doesn't contain any. This +information is kept on a per-level basis. + +(3) Sometimes the widget instance tree is structured such that you get the same +class name repeated on the fully qualified widget name. This can result in the +same database level occuring multiple times on the search list. The code below +only checks to see if you get two identical search lists in a row, rather than +look back through all database levels, but in practice this removes all +duplicates I've ever observed. + +Joel McCormack + +*/ + +/* + +The Xrm representation has been completely redesigned to substantially reduce +memory and hopefully improve performance. + +The database is structured into two kinds of tables: LTables that contain +only values, and NTables that contain only other tables. + +Some invariants: + +The next pointer of the top-level node table points to the top-level leaf +table, if any. + +Within an LTable, for a given name, the tight value always precedes the +loose value, and if both are present the loose value is always right after +the tight value. + +Within an NTable, all of the entries for a given name are contiguous, +in the order tight NTable, loose NTable, tight LTable, loose LTable. + +Bob Scheifler + +*/ + +static XrmQuark XrmQString, XrmQANY; + +typedef Bool (*DBEnumProc)( + XrmDatabase* /* db */, + XrmBindingList /* bindings */, + XrmQuarkList /* quarks */, + XrmRepresentation* /* type */, + XrmValue* /* value */, + XPointer /* closure */ +); + +typedef struct _VEntry { + struct _VEntry *next; /* next in chain */ + XrmQuark name; /* name of this entry */ + unsigned int tight:1; /* 1 if it is a tight binding */ + unsigned int string:1; /* 1 if type is String */ + unsigned int size:30; /* size of value */ +} VEntryRec, *VEntry; + + +typedef struct _DEntry { + VEntryRec entry; /* entry */ + XrmRepresentation type; /* representation type */ +} DEntryRec, *DEntry; + +/* the value is right after the structure */ +#define StringValue(ve) (XPointer)((ve) + 1) +#define RepType(ve) ((DEntry)(ve))->type +/* the value is right after the structure */ +#define DataValue(ve) (XPointer)(((DEntry)(ve)) + 1) +#define RawValue(ve) (char *)((ve)->string ? StringValue(ve) : DataValue(ve)) + +typedef struct _NTable { + struct _NTable *next; /* next in chain */ + XrmQuark name; /* name of this entry */ + unsigned int tight:1; /* 1 if it is a tight binding */ + unsigned int leaf:1; /* 1 if children are values */ + unsigned int hasloose:1; /* 1 if has loose children */ + unsigned int hasany:1; /* 1 if has ANY entry */ + unsigned int pad:4; /* unused */ + unsigned int mask:8; /* hash size - 1 */ + unsigned int entries:16; /* number of children */ +} NTableRec, *NTable; + +/* the buckets are right after the structure */ +#define NodeBuckets(ne) ((NTable *)((ne) + 1)) +#define NodeHash(ne,q) NodeBuckets(ne)[(q) & (ne)->mask] + +/* leaf tables have an extra level of indirection for the buckets, + * so that resizing can be done without invalidating a search list. + * This is completely ugly, and wastes some memory, but the Xlib + * spec doesn't really specify whether invalidation is OK, and the + * old implementation did not invalidate. + */ +typedef struct _LTable { + NTableRec table; + VEntry *buckets; +} LTableRec, *LTable; + +#define LeafHash(le,q) (le)->buckets[(q) & (le)->table.mask] + +/* An XrmDatabase just holds a pointer to the first top-level table. + * The type name is no longer descriptive, but better to not change + * the Xresource.h header file. This type also gets used to define + * XrmSearchList, which is a complete crock, but we'll just leave it + * and caste types as required. + */ +typedef struct _XrmHashBucketRec { + NTable table; + XPointer mbstate; + XrmMethods methods; +#ifdef XTHREADS + LockInfoRec linfo; +#endif +} XrmHashBucketRec; + +/* closure used in get/put resource */ +typedef struct _VClosure { + XrmRepresentation *type; /* type of value */ + XrmValuePtr value; /* value itself */ +} VClosureRec, *VClosure; + +/* closure used in get search list */ +typedef struct _SClosure { + LTable *list; /* search list */ + int idx; /* index of last filled element */ + int limit; /* maximum index */ +} SClosureRec, *SClosure; + +/* placed in XrmSearchList to indicate next table is loose only */ +#define LOOSESEARCH ((LTable)1) + +/* closure used in enumerate database */ +typedef struct _EClosure { + XrmDatabase db; /* the database */ + DBEnumProc proc; /* the user proc */ + XPointer closure; /* the user closure */ + XrmBindingList bindings; /* binding list */ + XrmQuarkList quarks; /* quark list */ + int mode; /* XrmEnum<kind> */ +} EClosureRec, *EClosure; + +/* types for typecasting ETable based functions to NTable based functions */ +typedef Bool (*getNTableSProcp)( + NTable table, + XrmNameList names, + XrmClassList classes, + SClosure closure); +typedef Bool (*getNTableVProcp)( + NTable table, + XrmNameList names, + XrmClassList classes, + VClosure closure); +typedef Bool (*getNTableEProcp)( + NTable table, + XrmNameList names, + XrmClassList classes, + register int level, + EClosure closure); + +/* predicate to determine when to resize a hash table */ +#define GrowthPred(n,m) ((unsigned)(n) > (((m) + 1) << 2)) + +#define GROW(prev) \ + if (GrowthPred((*prev)->entries, (*prev)->mask)) \ + GrowTable(prev) + +/* pick a reasonable value for maximum depth of resource database */ +#define MAXDBDEPTH 100 + +/* macro used in get/search functions */ + +/* find an entry named ename, with leafness given by leaf */ +#define NFIND(ename) \ + q = ename; \ + entry = NodeHash(table, q); \ + while (entry && entry->name != q) \ + entry = entry->next; \ + if (leaf && entry && !entry->leaf) { \ + entry = entry->next; \ + if (entry && !entry->leaf) \ + entry = entry->next; \ + if (entry && entry->name != q) \ + entry = (NTable)NULL; \ + } + +/* resourceQuarks keeps track of what quarks have been associated with values + * in all LTables. If a quark has never been used in an LTable, we don't need + * to bother looking for it. + */ + +static unsigned char *resourceQuarks = (unsigned char *)NULL; +static XrmQuark maxResourceQuark = -1; + +/* determines if a quark has been used for a value in any database */ +#define IsResourceQuark(q) ((q) > 0 && (q) <= maxResourceQuark && \ + resourceQuarks[(q) >> 3] & (1 << ((q) & 7))) + +typedef unsigned char XrmBits; + +#define BSLASH ((XrmBits) (1 << 5)) +#define NORMAL ((XrmBits) (1 << 4)) +#define EOQ ((XrmBits) (1 << 3)) +#define SEP ((XrmBits) (1 << 2)) +#define ENDOF ((XrmBits) (1 << 1)) +#define SPACE (NORMAL|EOQ|SEP|(XrmBits)0) +#define RSEP (NORMAL|EOQ|SEP|(XrmBits)1) +#define EOS (EOQ|SEP|ENDOF|(XrmBits)0) +#define EOL (EOQ|SEP|ENDOF|(XrmBits)1) +#define BINDING (NORMAL|EOQ) +#define ODIGIT (NORMAL|(XrmBits)1) + +#define next_char(ch,str) xrmtypes[(unsigned char)((ch) = *(++(str)))] +#define next_mbchar(ch,len,str) xrmtypes[(unsigned char)(ch = (*db->methods->mbchar)(db->mbstate, str, &len), str += len, ch)] + +#define is_space(bits) ((bits) == SPACE) +#define is_EOQ(bits) ((bits) & EOQ) +#define is_EOF(bits) ((bits) == EOS) +#define is_EOL(bits) ((bits) & ENDOF) +#define is_binding(bits) ((bits) == BINDING) +#define is_odigit(bits) ((bits) == ODIGIT) +#define is_separator(bits) ((bits) & SEP) +#define is_nonpcs(bits) (!(bits)) +#define is_normal(bits) ((bits) & NORMAL) +#define is_simple(bits) ((bits) & (NORMAL|BSLASH)) +#define is_special(bits) ((bits) & (ENDOF|BSLASH)) + +/* parsing types */ +static XrmBits const xrmtypes[256] = { + EOS,0,0,0,0,0,0,0, + 0,SPACE,EOL,0,0, +#if defined(WIN32) || defined(__UNIXOS2__) + EOL, /* treat CR the same as LF, just in case */ +#else + 0, +#endif + 0,0, + 0,0,0,0,0,0,0,0, + 0,0,0,0,0,0,0,0, + SPACE,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,BINDING,NORMAL,NORMAL,NORMAL,BINDING,NORMAL, + ODIGIT,ODIGIT,ODIGIT,ODIGIT,ODIGIT,ODIGIT,ODIGIT,ODIGIT, + NORMAL,NORMAL,RSEP,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,NORMAL,NORMAL,BSLASH,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL, + NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,NORMAL,0 + /* The rest will be automatically initialized to zero. */ +}; + +void XrmInitialize(void) +{ + XrmQString = XrmPermStringToQuark("String"); + XrmQANY = XrmPermStringToQuark("?"); +} + +XrmDatabase XrmGetDatabase( + Display *display) +{ + XrmDatabase retval; + LockDisplay(display); + retval = display->db; + UnlockDisplay(display); + return retval; +} + +void XrmSetDatabase( + Display *display, + XrmDatabase database) +{ + LockDisplay(display); + /* destroy database if set up imlicitely by XGetDefault() */ + if (display->db && (display->flags & XlibDisplayDfltRMDB)) { + XrmDestroyDatabase(display->db); + display->flags &= ~XlibDisplayDfltRMDB; + } + display->db = database; + UnlockDisplay(display); +} + +void +XrmStringToQuarkList( + register _Xconst char *name, + register XrmQuarkList quarks) /* RETURN */ +{ + register XrmBits bits; + register Signature sig = 0; + register char ch, *tname; + register int i = 0; + + if ((tname = (char *)name)) { + tname--; + while (!is_EOF(bits = next_char(ch, tname))) { + if (is_binding (bits)) { + if (i) { + /* Found a complete name */ + *quarks++ = _XrmInternalStringToQuark(name,tname - name, + sig, False); + i = 0; + sig = 0; + } + name = tname+1; + } + else { + sig = (sig << 1) + ch; /* Compute the signature. */ + i++; + } + } + *quarks++ = _XrmInternalStringToQuark(name, tname - name, sig, False); + } + *quarks = NULLQUARK; +} + +void +XrmStringToBindingQuarkList( + register _Xconst char *name, + register XrmBindingList bindings, /* RETURN */ + register XrmQuarkList quarks) /* RETURN */ +{ + register XrmBits bits; + register Signature sig = 0; + register char ch, *tname; + register XrmBinding binding; + register int i = 0; + + if ((tname = (char *)name)) { + tname--; + binding = XrmBindTightly; + while (!is_EOF(bits = next_char(ch, tname))) { + if (is_binding (bits)) { + if (i) { + /* Found a complete name */ + *bindings++ = binding; + *quarks++ = _XrmInternalStringToQuark(name, tname - name, + sig, False); + + i = 0; + sig = 0; + binding = XrmBindTightly; + } + name = tname+1; + + if (ch == '*') + binding = XrmBindLoosely; + } + else { + sig = (sig << 1) + ch; /* Compute the signature. */ + i++; + } + } + *bindings = binding; + *quarks++ = _XrmInternalStringToQuark(name, tname - name, sig, False); + } + *quarks = NULLQUARK; +} + +#ifdef DEBUG + +static void PrintQuarkList( + XrmQuarkList quarks, + FILE *stream) +{ + Bool firstNameSeen; + + for (firstNameSeen = False; *quarks; quarks++) { + if (firstNameSeen) { + (void) fprintf(stream, "."); + } + firstNameSeen = True; + (void) fputs(XrmQuarkToString(*quarks), stream); + } +} /* PrintQuarkList */ + +#endif /* DEBUG */ + + +/* + * Fallback methods for Xrm parsing. + * Simulate a C locale. No state needed here. + */ + +static void +c_mbnoop( + XPointer state) +{ +} + +static char +c_mbchar( + XPointer state, + const char *str, + int *lenp) +{ + *lenp = 1; + return *str; +} + +static const char * +c_lcname( + XPointer state) +{ + return "C"; +} + +static const XrmMethodsRec mb_methods = { + c_mbnoop, /* mbinit */ + c_mbchar, /* mbchar */ + c_mbnoop, /* mbfinish */ + c_lcname, /* lcname */ + c_mbnoop /* destroy */ +}; + + +static XrmDatabase NewDatabase(void) +{ + register XrmDatabase db; + + db = (XrmDatabase) Xmalloc(sizeof(XrmHashBucketRec)); + if (db) { + _XCreateMutex(&db->linfo); + db->table = (NTable)NULL; + db->mbstate = (XPointer)NULL; + db->methods = _XrmInitParseInfo(&db->mbstate); + if (!db->methods) + db->methods = &mb_methods; + } + return db; +} + +/* move all values from ftable to ttable, and free ftable's buckets. + * ttable is quaranteed empty to start with. + */ +static void MoveValues( + LTable ftable, + register LTable ttable) +{ + register VEntry fentry, nfentry; + register VEntry *prev; + register VEntry *bucket; + register VEntry tentry; + register int i; + + for (i = ftable->table.mask, bucket = ftable->buckets; i >= 0; i--) { + for (fentry = *bucket++; fentry; fentry = nfentry) { + prev = &LeafHash(ttable, fentry->name); + tentry = *prev; + *prev = fentry; + /* chain on all with same name, to preserve invariant order */ + while ((nfentry = fentry->next) && nfentry->name == fentry->name) + fentry = nfentry; + fentry->next = tentry; + } + } + Xfree((char *)ftable->buckets); +} + +/* move all tables from ftable to ttable, and free ftable. + * ttable is quaranteed empty to start with. + */ +static void MoveTables( + NTable ftable, + register NTable ttable) +{ + register NTable fentry, nfentry; + register NTable *prev; + register NTable *bucket; + register NTable tentry; + register int i; + + for (i = ftable->mask, bucket = NodeBuckets(ftable); i >= 0; i--) { + for (fentry = *bucket++; fentry; fentry = nfentry) { + prev = &NodeHash(ttable, fentry->name); + tentry = *prev; + *prev = fentry; + /* chain on all with same name, to preserve invariant order */ + while ((nfentry = fentry->next) && nfentry->name == fentry->name) + fentry = nfentry; + fentry->next = tentry; + } + } + Xfree((char *)ftable); +} + +/* grow the table, based on current number of entries */ +static void GrowTable( + NTable *prev) +{ + register NTable table; + register int i; + + table = *prev; + i = table->mask; + if (i == 255) /* biggest it gets */ + return; + while (i < 255 && GrowthPred(table->entries, i)) + i = (i << 1) + 1; + i++; /* i is now the new size */ + if (table->leaf) { + register LTable ltable; + LTableRec otable; + + ltable = (LTable)table; + /* cons up a copy to make MoveValues look symmetric */ + otable = *ltable; + ltable->buckets = Xcalloc(i, sizeof(VEntry)); + if (!ltable->buckets) { + ltable->buckets = otable.buckets; + return; + } + ltable->table.mask = i - 1; + MoveValues(&otable, ltable); + } else { + register NTable ntable; + + ntable = Xcalloc(1, sizeof(NTableRec) + (i * sizeof(NTable))); + if (!ntable) + return; + *ntable = *table; + ntable->mask = i - 1; + *prev = ntable; + MoveTables(table, ntable); + } +} + +/* merge values from ftable into *pprev, destroy ftable in the process */ +static void MergeValues( + LTable ftable, + NTable *pprev, + Bool override) +{ + register VEntry fentry, tentry; + register VEntry *prev; + register LTable ttable; + VEntry *bucket; + int i; + register XrmQuark q; + + ttable = (LTable)*pprev; + if (ftable->table.hasloose) + ttable->table.hasloose = 1; + for (i = ftable->table.mask, bucket = ftable->buckets; + i >= 0; + i--, bucket++) { + for (fentry = *bucket; fentry; ) { + q = fentry->name; + prev = &LeafHash(ttable, q); + tentry = *prev; + while (tentry && tentry->name != q) + tentry = *(prev = &tentry->next); + /* note: test intentionally uses fentry->name instead of q */ + /* permits serendipitous inserts */ + while (tentry && tentry->name == fentry->name) { + /* if tentry is earlier, skip it */ + if (!fentry->tight && tentry->tight) { + tentry = *(prev = &tentry->next); + continue; + } + if (fentry->tight != tentry->tight) { + /* no match, chain in fentry */ + *prev = fentry; + prev = &fentry->next; + fentry = *prev; + *prev = tentry; + ttable->table.entries++; + } else if (override) { + /* match, chain in fentry, splice out and free tentry */ + *prev = fentry; + prev = &fentry->next; + fentry = *prev; + *prev = tentry->next; + /* free the overridden entry */ + Xfree((char *)tentry); + /* get next tentry */ + tentry = *prev; + } else { + /* match, discard fentry */ + prev = &tentry->next; + tentry = fentry; /* use as a temp var */ + fentry = fentry->next; + /* free the overpowered entry */ + Xfree((char *)tentry); + /* get next tentry */ + tentry = *prev; + } + if (!fentry) + break; + } + /* at this point, tentry cannot match any fentry named q */ + /* chain in all bindings together, preserve invariant order */ + while (fentry && fentry->name == q) { + *prev = fentry; + prev = &fentry->next; + fentry = *prev; + *prev = tentry; + ttable->table.entries++; + } + } + } + Xfree((char *)ftable->buckets); + Xfree((char *)ftable); + /* resize if necessary, now that we're all done */ + GROW(pprev); +} + +/* merge tables from ftable into *pprev, destroy ftable in the process */ +static void MergeTables( + NTable ftable, + NTable *pprev, + Bool override) +{ + register NTable fentry, tentry; + NTable nfentry; + register NTable *prev; + register NTable ttable; + NTable *bucket; + int i; + register XrmQuark q; + + ttable = *pprev; + if (ftable->hasloose) + ttable->hasloose = 1; + if (ftable->hasany) + ttable->hasany = 1; + for (i = ftable->mask, bucket = NodeBuckets(ftable); + i >= 0; + i--, bucket++) { + for (fentry = *bucket; fentry; ) { + q = fentry->name; + prev = &NodeHash(ttable, q); + tentry = *prev; + while (tentry && tentry->name != q) + tentry = *(prev = &tentry->next); + /* note: test intentionally uses fentry->name instead of q */ + /* permits serendipitous inserts */ + while (tentry && tentry->name == fentry->name) { + /* if tentry is earlier, skip it */ + if ((fentry->leaf && !tentry->leaf) || + (!fentry->tight && tentry->tight && + (fentry->leaf || !tentry->leaf))) { + tentry = *(prev = &tentry->next); + continue; + } + nfentry = fentry->next; + if (fentry->leaf != tentry->leaf || + fentry->tight != tentry->tight) { + /* no match, just chain in */ + *prev = fentry; + *(prev = &fentry->next) = tentry; + ttable->entries++; + } else { + if (fentry->leaf) + MergeValues((LTable)fentry, prev, override); + else + MergeTables(fentry, prev, override); + /* bump to next tentry */ + tentry = *(prev = &(*prev)->next); + } + /* bump to next fentry */ + fentry = nfentry; + if (!fentry) + break; + } + /* at this point, tentry cannot match any fentry named q */ + /* chain in all bindings together, preserve invariant order */ + while (fentry && fentry->name == q) { + *prev = fentry; + prev = &fentry->next; + fentry = *prev; + *prev = tentry; + ttable->entries++; + } + } + } + Xfree((char *)ftable); + /* resize if necessary, now that we're all done */ + GROW(pprev); +} + +void XrmCombineDatabase( + XrmDatabase from, XrmDatabase *into, + Bool override) +{ + register NTable *prev; + register NTable ftable, ttable, nftable; + + if (!*into) { + *into = from; + } else if (from) { + _XLockMutex(&from->linfo); + _XLockMutex(&(*into)->linfo); + if ((ftable = from->table)) { + prev = &(*into)->table; + ttable = *prev; + if (!ftable->leaf) { + nftable = ftable->next; + if (ttable && !ttable->leaf) { + /* both have node tables, merge them */ + MergeTables(ftable, prev, override); + /* bump to into's leaf table, if any */ + ttable = *(prev = &(*prev)->next); + } else { + /* into has no node table, link from's in */ + *prev = ftable; + *(prev = &ftable->next) = ttable; + } + /* bump to from's leaf table, if any */ + ftable = nftable; + } else { + /* bump to into's leaf table, if any */ + if (ttable && !ttable->leaf) + ttable = *(prev = &ttable->next); + } + if (ftable) { + /* if into has a leaf, merge, else insert */ + if (ttable) + MergeValues((LTable)ftable, prev, override); + else + *prev = ftable; + } + } + (from->methods->destroy)(from->mbstate); + _XUnlockMutex(&from->linfo); + _XFreeMutex(&from->linfo); + Xfree((char *)from); + _XUnlockMutex(&(*into)->linfo); + } +} + +void XrmMergeDatabases( + XrmDatabase from, XrmDatabase *into) +{ + XrmCombineDatabase(from, into, True); +} + +/* store a value in the database, overriding any existing entry */ +static void PutEntry( + XrmDatabase db, + XrmBindingList bindings, + XrmQuarkList quarks, + XrmRepresentation type, + XrmValuePtr value) +{ + register NTable *pprev, *prev; + register NTable table; + register XrmQuark q; + register VEntry *vprev; + register VEntry entry; + NTable *nprev, *firstpprev; + +#define NEWTABLE(q,i) \ + table = (NTable)Xmalloc(sizeof(LTableRec)); \ + if (!table) \ + return; \ + table->name = q; \ + table->hasloose = 0; \ + table->hasany = 0; \ + table->mask = 0; \ + table->entries = 0; \ + if (quarks[i]) { \ + table->leaf = 0; \ + nprev = NodeBuckets(table); \ + } else { \ + table->leaf = 1; \ + if (!(nprev = (NTable *)Xmalloc(sizeof(VEntry *)))) {\ + Xfree(table); \ + return; \ + } \ + ((LTable)table)->buckets = (VEntry *)nprev; \ + } \ + *nprev = (NTable)NULL; \ + table->next = *prev; \ + *prev = table + + if (!db || !*quarks) + return; + table = *(prev = &db->table); + /* if already at leaf, bump to the leaf table */ + if (!quarks[1] && table && !table->leaf) + table = *(prev = &table->next); + pprev = prev; + if (!table || (quarks[1] && table->leaf)) { + /* no top-level node table, create one and chain it in */ + NEWTABLE(NULLQUARK,1); + table->tight = 1; /* arbitrary */ + prev = nprev; + } else { + /* search along until we need a value */ + while (quarks[1]) { + q = *quarks; + table = *(prev = &NodeHash(table, q)); + while (table && table->name != q) + table = *(prev = &table->next); + if (!table) + break; /* not found */ + if (quarks[2]) { + if (table->leaf) + break; /* not found */ + } else { + if (!table->leaf) { + /* bump to leaf table, if any */ + table = *(prev = &table->next); + if (!table || table->name != q) + break; /* not found */ + if (!table->leaf) { + /* bump to leaf table, if any */ + table = *(prev = &table->next); + if (!table || table->name != q) + break; /* not found */ + } + } + } + if (*bindings == XrmBindTightly) { + if (!table->tight) + break; /* not found */ + } else { + if (table->tight) { + /* bump to loose table, if any */ + table = *(prev = &table->next); + if (!table || table->name != q || + !quarks[2] != table->leaf) + break; /* not found */ + } + } + /* found that one, bump to next quark */ + pprev = prev; + quarks++; + bindings++; + } + if (!quarks[1]) { + /* found all the way to a leaf */ + q = *quarks; + entry = *(vprev = &LeafHash((LTable)table, q)); + while (entry && entry->name != q) + entry = *(vprev = &entry->next); + /* if want loose and have tight, bump to next entry */ + if (entry && *bindings == XrmBindLoosely && entry->tight) + entry = *(vprev = &entry->next); + if (entry && entry->name == q && + (*bindings == XrmBindTightly) == entry->tight) { + /* match, need to override */ + if ((type == XrmQString) == entry->string && + entry->size == value->size) { + /* update type if not String, can be different */ + if (!entry->string) + RepType(entry) = type; + /* identical size, just overwrite value */ + memcpy(RawValue(entry), (char *)value->addr, value->size); + return; + } + /* splice out and free old entry */ + *vprev = entry->next; + Xfree((char *)entry); + (*pprev)->entries--; + } + /* this is where to insert */ + prev = (NTable *)vprev; + } + } + /* keep the top table, because we may have to grow it */ + firstpprev = pprev; + /* iterate until we get to the leaf */ + while (quarks[1]) { + /* build a new table and chain it in */ + NEWTABLE(*quarks,2); + if (*quarks++ == XrmQANY) + (*pprev)->hasany = 1; + if (*bindings++ == XrmBindTightly) { + table->tight = 1; + } else { + table->tight = 0; + (*pprev)->hasloose = 1; + } + (*pprev)->entries++; + pprev = prev; + prev = nprev; + } + /* now allocate the value entry */ + entry = (VEntry)Xmalloc(((type == XrmQString) ? + sizeof(VEntryRec) : sizeof(DEntryRec)) + + value->size); + if (!entry) + return; + entry->name = q = *quarks; + if (*bindings == XrmBindTightly) { + entry->tight = 1; + } else { + entry->tight = 0; + (*pprev)->hasloose = 1; + } + /* chain it in, with a bit of type cast ugliness */ + entry->next = *((VEntry *)prev); + *((VEntry *)prev) = entry; + entry->size = value->size; + if (type == XrmQString) { + entry->string = 1; + } else { + entry->string = 0; + RepType(entry) = type; + } + /* save a copy of the value */ + memcpy(RawValue(entry), (char *)value->addr, value->size); + (*pprev)->entries++; + /* this is a new leaf, need to remember it for search lists */ + if (q > maxResourceQuark) { + unsigned oldsize = (maxResourceQuark + 1) >> 3; + unsigned size = ((q | 0x7f) + 1) >> 3; /* reallocate in chunks */ + if (resourceQuarks) { + unsigned char *prevQuarks = resourceQuarks; + + resourceQuarks = (unsigned char *)Xrealloc((char *)resourceQuarks, + size); + if (!resourceQuarks) { + Xfree(prevQuarks); + } + } else + resourceQuarks = (unsigned char *)Xmalloc(size); + if (resourceQuarks) { + bzero((char *)&resourceQuarks[oldsize], size - oldsize); + maxResourceQuark = (size << 3) - 1; + } else { + maxResourceQuark = -1; + } + } + if (q > 0 && resourceQuarks) + resourceQuarks[q >> 3] |= 1 << (q & 0x7); + GROW(firstpprev); + +#undef NEWTABLE +} + +void XrmQPutResource( + XrmDatabase *pdb, + XrmBindingList bindings, + XrmQuarkList quarks, + XrmRepresentation type, + XrmValuePtr value) +{ + if (!*pdb) *pdb = NewDatabase(); + _XLockMutex(&(*pdb)->linfo); + PutEntry(*pdb, bindings, quarks, type, value); + _XUnlockMutex(&(*pdb)->linfo); +} + +void +XrmPutResource( + XrmDatabase *pdb, + _Xconst char *specifier, + _Xconst char *type, + XrmValuePtr value) +{ + XrmBinding bindings[MAXDBDEPTH+1]; + XrmQuark quarks[MAXDBDEPTH+1]; + + if (!*pdb) *pdb = NewDatabase(); + _XLockMutex(&(*pdb)->linfo); + XrmStringToBindingQuarkList(specifier, bindings, quarks); + PutEntry(*pdb, bindings, quarks, XrmStringToQuark(type), value); + _XUnlockMutex(&(*pdb)->linfo); +} + +void +XrmQPutStringResource( + XrmDatabase *pdb, + XrmBindingList bindings, + XrmQuarkList quarks, + _Xconst char *str) +{ + XrmValue value; + + if (!*pdb) *pdb = NewDatabase(); + value.addr = (XPointer) str; + value.size = strlen(str)+1; + _XLockMutex(&(*pdb)->linfo); + PutEntry(*pdb, bindings, quarks, XrmQString, &value); + _XUnlockMutex(&(*pdb)->linfo); +} + +/* Function Name: GetDatabase + * Description: Parses a string and stores it as a database. + * Arguments: db - the database. + * str - a pointer to the string containing the database. + * filename - source filename, if any. + * doall - whether to do all lines or just one + */ + +/* + * This function is highly optimized to inline as much as possible. + * Be very careful with modifications, or simplifications, as they + * may adversely affect the performance. + * + * Chris Peterson, MIT X Consortium 5/17/90. + */ + +/* + * Xlib spec says max 100 quarks in a lookup, will stop and return if + * return if any single production's lhs has more than 100 components. + */ +#define QLIST_SIZE 100 + +/* + * This should be big enough to handle things like the XKeysymDB or biggish + * ~/.Xdefaults or app-defaults files. Anything bigger will be allocated on + * the heap. + */ +#define DEF_BUFF_SIZE 8192 + +static void GetIncludeFile( + XrmDatabase db, + _Xconst char *base, + _Xconst char *fname, + int fnamelen); + +static void GetDatabase( + XrmDatabase db, + _Xconst register char *str, + _Xconst char *filename, + Bool doall) +{ + char *rhs; + char *lhs, lhs_s[DEF_BUFF_SIZE]; + XrmQuark quarks[QLIST_SIZE + 1]; /* allow for a terminal NullQuark */ + XrmBinding bindings[QLIST_SIZE + 1]; + + register char *ptr; + register XrmBits bits = 0; + register char c; + register Signature sig; + register char *ptr_max; + register int num_quarks; + register XrmBindingList t_bindings; + + int len, alloc_chars; + unsigned long str_len; + XrmValue value; + Bool only_pcs; + Bool dolines; + + if (!db) + return; + + /* + * if strlen (str) < DEF_BUFF_SIZE allocate buffers on the stack for + * speed otherwise malloc the buffer. From a buffer overflow standpoint + * we can be sure that neither: a) a component on the lhs, or b) a + * value on the rhs, will be longer than the overall length of str, + * i.e. strlen(str). + * + * This should give good performance when parsing "*foo: bar" type + * databases as might be passed with -xrm command line options; but + * with larger databases, e.g. .Xdefaults, app-defaults, or KeysymDB + * files, the size of the buffers will be overly large. One way + * around this would be to double-parse each production with a resulting + * performance hit. In any event we can be assured that a lhs component + * name or a rhs value won't be longer than str itself. + */ + + str_len = strlen (str); + if (DEF_BUFF_SIZE > str_len) lhs = lhs_s; + else if ((lhs = (char*) Xmalloc (str_len)) == NULL) + return; + + alloc_chars = DEF_BUFF_SIZE < str_len ? str_len : DEF_BUFF_SIZE; + if ((rhs = (char*) Xmalloc (alloc_chars)) == NULL) { + if (lhs != lhs_s) Xfree (lhs); + return; + } + + (*db->methods->mbinit)(db->mbstate); + str--; + dolines = True; + while (!is_EOF(bits) && dolines) { + dolines = doall; + + /* + * First: Remove extra whitespace. + */ + + do { + bits = next_char(c, str); + } while is_space(bits); + + /* + * Ignore empty lines. + */ + + if (is_EOL(bits)) + continue; /* start a new line. */ + + /* + * Second: check the first character in a line to see if it is + * "!" signifying a comment, or "#" signifying a directive. + */ + + if (c == '!') { /* Comment, spin to next newline */ + while (is_simple(bits = next_char(c, str))) {} + if (is_EOL(bits)) + continue; + while (!is_EOL(bits = next_mbchar(c, len, str))) {} + str--; + continue; /* start a new line. */ + } + + if (c == '#') { /* Directive */ + /* remove extra whitespace */ + only_pcs = True; + while (is_space(bits = next_char(c, str))) {}; + /* only "include" directive is currently defined */ + if (!strncmp(str, "include", 7)) { + str += (7-1); + /* remove extra whitespace */ + while (is_space(bits = next_char(c, str))) {}; + /* must have a starting " */ + if (c == '"') { + _Xconst char *fname = str+1; + len = 0; + do { + if (only_pcs) { + bits = next_char(c, str); + if (is_nonpcs(bits)) + only_pcs = False; + } + if (!only_pcs) + bits = next_mbchar(c, len, str); + } while (c != '"' && !is_EOL(bits)); + /* must have an ending " */ + if (c == '"') + GetIncludeFile(db, filename, fname, str - len - fname); + } + } + /* spin to next newline */ + if (only_pcs) { + while (is_simple(bits)) + bits = next_char(c, str); + if (is_EOL(bits)) + continue; + } + while (!is_EOL(bits)) + bits = next_mbchar(c, len, str); + str--; + continue; /* start a new line. */ + } + + /* + * Third: loop through the LHS of the resource specification + * storing characters and converting this to a Quark. + */ + + num_quarks = 0; + t_bindings = bindings; + + sig = 0; + ptr = lhs; + *t_bindings = XrmBindTightly; + for(;;) { + if (!is_binding(bits)) { + while (!is_EOQ(bits)) { + *ptr++ = c; + sig = (sig << 1) + c; /* Compute the signature. */ + bits = next_char(c, str); + } + + quarks[num_quarks++] = + _XrmInternalStringToQuark(lhs, ptr - lhs, sig, False); + + if (num_quarks > QLIST_SIZE) { + Xfree(rhs); + if (lhs != lhs_s) Xfree (lhs); + (*db->methods->mbfinish)(db->mbstate); + return; + } + + if (is_separator(bits)) { + if (!is_space(bits)) + break; + + /* Remove white space */ + do { + *ptr++ = c; + sig = (sig << 1) + c; /* Compute the signature. */ + } while (is_space(bits = next_char(c, str))); + + /* + * The spec doesn't permit it, but support spaces + * internal to resource name/class + */ + + if (is_separator(bits)) + break; + num_quarks--; + continue; + } + + if (c == '.') + *(++t_bindings) = XrmBindTightly; + else + *(++t_bindings) = XrmBindLoosely; + + sig = 0; + ptr = lhs; + } + else { + /* + * Magic unspecified feature #254. + * + * If two separators appear with no Text between them then + * ignore them. + * + * If anyone of those separators is a '*' then the binding + * will be loose, otherwise it will be tight. + */ + + if (c == '*') + *t_bindings = XrmBindLoosely; + } + + bits = next_char(c, str); + } + + quarks[num_quarks] = NULLQUARK; + + /* + * Make sure that there is a ':' in this line. + */ + + if (c != ':') { + char oldc; + + /* + * A parsing error has occured, toss everything on the line + * a new_line can still be escaped with a '\'. + */ + + while (is_normal(bits)) + bits = next_char(c, str); + if (is_EOL(bits)) + continue; + bits = next_mbchar(c, len, str); + do { + oldc = c; + bits = next_mbchar(c, len, str); + } while (c && (c != '\n' || oldc == '\\')); + str--; + continue; + } + + /* + * I now have a quark and binding list for the entire left hand + * side. "c" currently points to the ":" separating the left hand + * side for the right hand side. It is time to begin processing + * the right hand side. + */ + + /* + * Fourth: Remove more whitespace + */ + + for(;;) { + if (is_space(bits = next_char(c, str))) + continue; + if (c != '\\') + break; + bits = next_char(c, str); + if (c == '\n') + continue; + str--; + bits = BSLASH; + c = '\\'; + break; + } + + /* + * Fifth: Process the right hand side. + */ + + ptr = rhs; + ptr_max = ptr + alloc_chars - 4; + only_pcs = True; + len = 1; + + for(;;) { + + /* + * Tight loop for the normal case: Non backslash, non-end of value + * character that will fit into the allocated buffer. + */ + + if (only_pcs) { + while (is_normal(bits) && ptr < ptr_max) { + *ptr++ = c; + bits = next_char(c, str); + } + if (is_EOL(bits)) + break; + if (is_nonpcs(bits)) { + only_pcs = False; + bits = next_mbchar(c, len, str); + } + } + while (!is_special(bits) && ptr + len <= ptr_max) { + len = -len; + while (len) + *ptr++ = str[len++]; + if (*str == '\0') { + bits = EOS; + break; + } + bits = next_mbchar(c, len, str); + } + + if (is_EOL(bits)) { + str--; + break; + } + + if (c == '\\') { + /* + * We need to do some magic after a backslash. + */ + Bool read_next = True; + + if (only_pcs) { + bits = next_char(c, str); + if (is_nonpcs(bits)) + only_pcs = False; + } + if (!only_pcs) + bits = next_mbchar(c, len, str); + + if (is_EOL(bits)) { + if (is_EOF(bits)) + continue; + } else if (c == 'n') { + /* + * "\n" means insert a newline. + */ + *ptr++ = '\n'; + } else if (c == '\\') { + /* + * "\\" completes to just one backslash. + */ + *ptr++ = '\\'; + } else { + /* + * pick up to three octal digits after the '\'. + */ + char temp[3]; + int count = 0; + while (is_odigit(bits) && count < 3) { + temp[count++] = c; + if (only_pcs) { + bits = next_char(c, str); + if (is_nonpcs(bits)) + only_pcs = False; + } + if (!only_pcs) + bits = next_mbchar(c, len, str); + } + + /* + * If we found three digits then insert that octal code + * into the value string as a character. + */ + + if (count == 3) { + *ptr++ = (unsigned char) ((temp[0] - '0') * 0100 + + (temp[1] - '0') * 010 + + (temp[2] - '0')); + } + else { + int tcount; + + /* + * Otherwise just insert those characters into the + * string, since no special processing is needed on + * numerics we can skip the special processing. + */ + + for (tcount = 0; tcount < count; tcount++) { + *ptr++ = temp[tcount]; /* print them in + the correct order */ + } + } + read_next = False; + } + if (read_next) { + if (only_pcs) { + bits = next_char(c, str); + if (is_nonpcs(bits)) + only_pcs = False; + } + if (!only_pcs) + bits = next_mbchar(c, len, str); + } + } + + /* + * It is important to make sure that there is room for at least + * four more characters in the buffer, since I can add that + * many characters into the buffer after a backslash has occured. + */ + + if (ptr + len > ptr_max) { + char * temp_str; + + alloc_chars += BUFSIZ/10; + temp_str = Xrealloc(rhs, sizeof(char) * alloc_chars); + + if (!temp_str) { + Xfree(rhs); + if (lhs != lhs_s) Xfree (lhs); + (*db->methods->mbfinish)(db->mbstate); + return; + } + + ptr = temp_str + (ptr - rhs); /* reset pointer. */ + rhs = temp_str; + ptr_max = rhs + alloc_chars - 4; + } + } + + /* + * Lastly: Terminate the value string, and store this entry + * into the database. + */ + + *ptr++ = '\0'; + + /* Store it in database */ + value.size = ptr - rhs; + value.addr = (XPointer) rhs; + + PutEntry(db, bindings, quarks, XrmQString, &value); + } + + if (lhs != lhs_s) Xfree (lhs); + Xfree (rhs); + + (*db->methods->mbfinish)(db->mbstate); +} + +void +XrmPutStringResource( + XrmDatabase *pdb, + _Xconst char*specifier, + _Xconst char*str) +{ + XrmValue value; + XrmBinding bindings[MAXDBDEPTH+1]; + XrmQuark quarks[MAXDBDEPTH+1]; + + if (!*pdb) *pdb = NewDatabase(); + XrmStringToBindingQuarkList(specifier, bindings, quarks); + value.addr = (XPointer) str; + value.size = strlen(str)+1; + _XLockMutex(&(*pdb)->linfo); + PutEntry(*pdb, bindings, quarks, XrmQString, &value); + _XUnlockMutex(&(*pdb)->linfo); +} + + +void +XrmPutLineResource( + XrmDatabase *pdb, + _Xconst char*line) +{ + if (!*pdb) *pdb = NewDatabase(); + _XLockMutex(&(*pdb)->linfo); + GetDatabase(*pdb, line, (char *)NULL, False); + _XUnlockMutex(&(*pdb)->linfo); +} + +XrmDatabase +XrmGetStringDatabase( + _Xconst char *data) +{ + XrmDatabase db; + + db = NewDatabase(); + _XLockMutex(&db->linfo); + GetDatabase(db, data, (char *)NULL, True); + _XUnlockMutex(&db->linfo); + return db; +} + +/* Function Name: ReadInFile + * Description: Reads the file into a buffer. + * Arguments: filename - the name of the file. + * Returns: An allocated string containing the contents of the file. + */ + +static char * +ReadInFile(_Xconst char *filename) +{ + register int fd, size; + char * filebuf; + +#ifdef __UNIXOS2__ + filename = __XOS2RedirRoot(filename); +#endif + + /* + * MS-Windows and OS/2 note: Default open mode includes O_TEXT + */ + if ( (fd = _XOpenFile (filename, O_RDONLY)) == -1 ) + return (char *)NULL; + + /* + * MS-Windows and OS/2 note: depending on how the sources are + * untarred, the newlines in resource files may or may not have + * been expanded to CRLF. Either way the size returned by fstat + * is sufficient to read the file into because in text-mode any + * CRLFs in a file will be converted to newlines (LF) with the + * result that the number of bytes actually read with be <= + * to the size returned by fstat. + */ + { + struct stat status_buffer; + if ( (fstat(fd, &status_buffer)) == -1 ) { + close (fd); + return (char *)NULL; + } else + size = status_buffer.st_size; + } + + if (!(filebuf = Xmalloc(size + 1))) { /* leave room for '\0' */ + close(fd); + return (char *)NULL; + } + size = read (fd, filebuf, size); + +#ifdef __UNIXOS2__ + { /* kill CRLF */ + int i,k; + for (i=k=0; i<size; i++) + if (filebuf[i] != 0x0d) { + filebuf[k++] = filebuf[i]; + } + filebuf[k] = 0; + } +#endif + + if (size < 0) { + close (fd); + Xfree(filebuf); + return (char *)NULL; + } + close (fd); + + filebuf[size] = '\0'; /* NULL terminate it. */ + return filebuf; +} + +static void +GetIncludeFile( + XrmDatabase db, + _Xconst char *base, + _Xconst char *fname, + int fnamelen) +{ + int len; + char *str; + char realfname[BUFSIZ]; + + if (fnamelen <= 0 || fnamelen >= BUFSIZ) + return; + if (*fname != '/' && base && (str = strrchr(base, '/'))) { + len = str - base + 1; + if (len + fnamelen >= BUFSIZ) + return; + strncpy(realfname, base, len); + strncpy(realfname + len, fname, fnamelen); + realfname[len + fnamelen] = '\0'; + } else { + strncpy(realfname, fname, fnamelen); + realfname[fnamelen] = '\0'; + } + if (!(str = ReadInFile(realfname))) + return; + GetDatabase(db, str, realfname, True); + Xfree(str); +} + +XrmDatabase +XrmGetFileDatabase( + _Xconst char *filename) +{ + XrmDatabase db; + char *str; + + if (!(str = ReadInFile(filename))) + return (XrmDatabase)NULL; + + db = NewDatabase(); + _XLockMutex(&db->linfo); + GetDatabase(db, str, filename, True); + _XUnlockMutex(&db->linfo); + Xfree(str); + return db; +} + +Status +XrmCombineFileDatabase( + _Xconst char *filename, + XrmDatabase *target, + Bool override) +{ + XrmDatabase db; + char *str; + + if (!(str = ReadInFile(filename))) + return 0; + if (override) { + db = *target; + if (!db) + *target = db = NewDatabase(); + } else + db = NewDatabase(); + _XLockMutex(&db->linfo); + GetDatabase(db, str, filename, True); + _XUnlockMutex(&db->linfo); + Xfree(str); + if (!override) + XrmCombineDatabase(db, target, False); + return 1; +} + +/* call the user proc for every value in the table, arbitrary order. + * stop if user proc returns True. level is current depth in database. + */ +/*ARGSUSED*/ +static Bool EnumLTable( + LTable table, + XrmNameList names, + XrmClassList classes, + register int level, + register EClosure closure) +{ + register VEntry *bucket; + register int i; + register VEntry entry; + XrmValue value; + XrmRepresentation type; + Bool tightOk; + + closure->bindings[level] = (table->table.tight ? + XrmBindTightly : XrmBindLoosely); + closure->quarks[level] = table->table.name; + level++; + tightOk = !*names; + closure->quarks[level + 1] = NULLQUARK; + for (i = table->table.mask, bucket = table->buckets; + i >= 0; + i--, bucket++) { + for (entry = *bucket; entry; entry = entry->next) { + if (entry->tight && !tightOk) + continue; + closure->bindings[level] = (entry->tight ? + XrmBindTightly : XrmBindLoosely); + closure->quarks[level] = entry->name; + value.size = entry->size; + if (entry->string) { + type = XrmQString; + value.addr = StringValue(entry); + } else { + type = RepType(entry); + value.addr = DataValue(entry); + } + if ((*closure->proc)(&closure->db, closure->bindings+1, + closure->quarks+1, &type, &value, + closure->closure)) + return True; + } + } + return False; +} + +static Bool EnumAllNTable( + NTable table, + register int level, + register EClosure closure) +{ + register NTable *bucket; + register int i; + register NTable entry; + XrmQuark empty = NULLQUARK; + + if (level >= MAXDBDEPTH) + return False; + for (i = table->mask, bucket = NodeBuckets(table); + i >= 0; + i--, bucket++) { + for (entry = *bucket; entry; entry = entry->next) { + if (entry->leaf) { + if (EnumLTable((LTable)entry, &empty, &empty, level, closure)) + return True; + } else { + closure->bindings[level] = (entry->tight ? + XrmBindTightly : XrmBindLoosely); + closure->quarks[level] = entry->name; + if (EnumAllNTable(entry, level+1, closure)) + return True; + } + } + } + return False; +} + +/* recurse on every table in the table, arbitrary order. + * stop if user proc returns True. level is current depth in database. + */ +static Bool EnumNTable( + NTable table, + XrmNameList names, + XrmClassList classes, + register int level, + register EClosure closure) +{ + register NTable entry; + register XrmQuark q; + register unsigned int leaf; + Bool (*get)( + NTable table, + XrmNameList names, + XrmClassList classes, + register int level, + EClosure closure); + Bool bilevel; + +/* find entries named ename, leafness leaf, tight or loose, and call get */ +#define ITIGHTLOOSE(ename) \ + NFIND(ename); \ + if (entry) { \ + if (leaf == entry->leaf) { \ + if (!leaf && !entry->tight && entry->next && \ + entry->next->name == q && entry->next->tight && \ + (bilevel || entry->next->hasloose) && \ + EnumLTable((LTable)entry->next, names+1, classes+1, \ + level, closure)) \ + return True; \ + if ((*get)(entry, names+1, classes+1, level, closure)) \ + return True; \ + if (entry->tight && (entry = entry->next) && \ + entry->name == q && leaf == entry->leaf && \ + (*get)(entry, names+1, classes+1, level, closure)) \ + return True; \ + } else if (entry->leaf) { \ + if ((bilevel || entry->hasloose) && \ + EnumLTable((LTable)entry, names+1, classes+1, level, closure))\ + return True; \ + if (entry->tight && (entry = entry->next) && \ + entry->name == q && (bilevel || entry->hasloose) && \ + EnumLTable((LTable)entry, names+1, classes+1, level, closure))\ + return True; \ + } \ + } + +/* find entries named ename, leafness leaf, loose only, and call get */ +#define ILOOSE(ename) \ + NFIND(ename); \ + if (entry && entry->tight && (entry = entry->next) && entry->name != q) \ + entry = (NTable)NULL; \ + if (entry) { \ + if (leaf == entry->leaf) { \ + if ((*get)(entry, names+1, classes+1, level, closure)) \ + return True; \ + } else if (entry->leaf && (bilevel || entry->hasloose)) { \ + if (EnumLTable((LTable)entry, names+1, classes+1, level, closure))\ + return True; \ + } \ + } + + if (level >= MAXDBDEPTH) + return False; + closure->bindings[level] = (table->tight ? + XrmBindTightly : XrmBindLoosely); + closure->quarks[level] = table->name; + level++; + if (!*names) { + if (EnumAllNTable(table, level, closure)) + return True; + } else { + if (names[1] || closure->mode == XrmEnumAllLevels) { + get = EnumNTable; /* recurse */ + leaf = 0; + bilevel = !names[1]; + } else { + get = (getNTableEProcp)EnumLTable; /* bottom of recursion */ + leaf = 1; + bilevel = False; + } + if (table->hasloose && closure->mode == XrmEnumAllLevels) { + NTable *bucket; + int i; + XrmQuark empty = NULLQUARK; + + for (i = table->mask, bucket = NodeBuckets(table); + i >= 0; + i--, bucket++) { + q = NULLQUARK; + for (entry = *bucket; entry; entry = entry->next) { + if (!entry->tight && entry->name != q && + entry->name != *names && entry->name != *classes) { + q = entry->name; + if (entry->leaf) { + if (EnumLTable((LTable)entry, &empty, &empty, + level, closure)) + return True; + } else { + if (EnumNTable(entry, &empty, &empty, + level, closure)) + return True; + } + } + } + } + } + + ITIGHTLOOSE(*names); /* do name, tight and loose */ + ITIGHTLOOSE(*classes); /* do class, tight and loose */ + if (table->hasany) { + ITIGHTLOOSE(XrmQANY); /* do ANY, tight and loose */ + } + if (table->hasloose) { + while (1) { + names++; + classes++; + if (!*names) + break; + if (!names[1] && closure->mode != XrmEnumAllLevels) { + get = (getNTableEProcp)EnumLTable; /* bottom of recursion */ + leaf = 1; + } + ILOOSE(*names); /* loose names */ + ILOOSE(*classes); /* loose classes */ + if (table->hasany) { + ILOOSE(XrmQANY); /* loose ANY */ + } + } + names--; + classes--; + } + } + /* now look for matching leaf nodes */ + entry = table->next; + if (!entry) + return False; + if (entry->leaf) { + if (entry->tight && !table->tight) + entry = entry->next; + } else { + entry = entry->next; + if (!entry || !entry->tight) + return False; + } + if (!entry || entry->name != table->name) + return False; + /* found one */ + level--; + if ((!*names || entry->hasloose) && + EnumLTable((LTable)entry, names, classes, level, closure)) + return True; + if (entry->tight && entry == table->next && (entry = entry->next) && + entry->name == table->name && (!*names || entry->hasloose)) + return EnumLTable((LTable)entry, names, classes, level, closure); + return False; + +#undef ITIGHTLOOSE +#undef ILOOSE +} + +/* call the proc for every value in the database, arbitrary order. + * stop if the proc returns True. + */ +Bool XrmEnumerateDatabase( + XrmDatabase db, + XrmNameList names, + XrmClassList classes, + int mode, + DBEnumProc proc, + XPointer closure) +{ + XrmBinding bindings[MAXDBDEPTH+2]; + XrmQuark quarks[MAXDBDEPTH+2]; + register NTable table; + EClosureRec eclosure; + Bool retval = False; + + if (!db) + return False; + _XLockMutex(&db->linfo); + eclosure.db = db; + eclosure.proc = proc; + eclosure.closure = closure; + eclosure.bindings = bindings; + eclosure.quarks = quarks; + eclosure.mode = mode; + table = db->table; + if (table && !table->leaf && !*names && mode == XrmEnumOneLevel) + table = table->next; + if (table) { + if (!table->leaf) + retval = EnumNTable(table, names, classes, 0, &eclosure); + else + retval = EnumLTable((LTable)table, names, classes, 0, &eclosure); + } + _XUnlockMutex(&db->linfo); + return retval; +} + +static void PrintBindingQuarkList( + XrmBindingList bindings, + XrmQuarkList quarks, + FILE *stream) +{ + Bool firstNameSeen; + + for (firstNameSeen = False; *quarks; bindings++, quarks++) { + if (*bindings == XrmBindLoosely) { + (void) fprintf(stream, "*"); + } else if (firstNameSeen) { + (void) fprintf(stream, "."); + } + firstNameSeen = True; + (void) fputs(XrmQuarkToString(*quarks), stream); + } +} + +/* output out the entry in correct file syntax */ +/*ARGSUSED*/ +static Bool DumpEntry( + XrmDatabase *db, + XrmBindingList bindings, + XrmQuarkList quarks, + XrmRepresentation *type, + XrmValuePtr value, + XPointer data) +{ + FILE *stream = (FILE *)data; + register unsigned int i; + register char *s; + register char c; + + if (*type != XrmQString) + (void) putc('!', stream); + PrintBindingQuarkList(bindings, quarks, stream); + s = value->addr; + i = value->size; + if (*type == XrmQString) { + (void) fputs(":\t", stream); + if (i) + i--; + } + else + (void) fprintf(stream, "=%s:\t", XrmRepresentationToString(*type)); + if (i && (*s == ' ' || *s == '\t')) + (void) putc('\\', stream); /* preserve leading whitespace */ + while (i--) { + c = *s++; + if (c == '\n') { + if (i) + (void) fputs("\\n\\\n", stream); + else + (void) fputs("\\n", stream); + } else if (c == '\\') + (void) fputs("\\\\", stream); + else if ((c < ' ' && c != '\t') || + ((unsigned char)c >= 0x7f && (unsigned char)c < 0xa0)) + (void) fprintf(stream, "\\%03o", (unsigned char)c); + else + (void) putc(c, stream); + } + (void) putc('\n', stream); + return ferror(stream) != 0; +} + +#ifdef DEBUG + +void PrintTable( + NTable table, + FILE *file) +{ + XrmBinding bindings[MAXDBDEPTH+1]; + XrmQuark quarks[MAXDBDEPTH+1]; + EClosureRec closure; + XrmQuark empty = NULLQUARK; + + closure.db = (XrmDatabase)NULL; + closure.proc = DumpEntry; + closure.closure = (XPointer)file; + closure.bindings = bindings; + closure.quarks = quarks; + closure.mode = XrmEnumAllLevels; + if (table->leaf) + EnumLTable((LTable)table, &empty, &empty, 0, &closure); + else + EnumNTable(table, &empty, &empty, 0, &closure); +} + +#endif /* DEBUG */ + +void +XrmPutFileDatabase( + XrmDatabase db, + _Xconst char *fileName) +{ + FILE *file; + XrmQuark empty = NULLQUARK; + + if (!db) return; + if (!(file = fopen(fileName, "w"))) return; + if (XrmEnumerateDatabase(db, &empty, &empty, XrmEnumAllLevels, + DumpEntry, (XPointer) file)) + unlink((char *)fileName); + fclose(file); +} + +/* macros used in get/search functions */ + +/* find entries named ename, leafness leaf, tight or loose, and call get */ +#define GTIGHTLOOSE(ename,looseleaf) \ + NFIND(ename); \ + if (entry) { \ + if (leaf == entry->leaf) { \ + if (!leaf && !entry->tight && entry->next && \ + entry->next->name == q && entry->next->tight && \ + entry->next->hasloose && \ + looseleaf((LTable)entry->next, names+1, classes+1, closure)) \ + return True; \ + if ((*get)(entry, names+1, classes+1, closure)) \ + return True; \ + if (entry->tight && (entry = entry->next) && \ + entry->name == q && leaf == entry->leaf && \ + (*get)(entry, names+1, classes+1, closure)) \ + return True; \ + } else if (entry->leaf) { \ + if (entry->hasloose && \ + looseleaf((LTable)entry, names+1, classes+1, closure)) \ + return True; \ + if (entry->tight && (entry = entry->next) && \ + entry->name == q && entry->hasloose && \ + looseleaf((LTable)entry, names+1, classes+1, closure)) \ + return True; \ + } \ + } + +/* find entries named ename, leafness leaf, loose only, and call get */ +#define GLOOSE(ename,looseleaf) \ + NFIND(ename); \ + if (entry && entry->tight && (entry = entry->next) && entry->name != q) \ + entry = (NTable)NULL; \ + if (entry) { \ + if (leaf == entry->leaf) { \ + if ((*get)(entry, names+1, classes+1, closure)) \ + return True; \ + } else if (entry->leaf && entry->hasloose) { \ + if (looseleaf((LTable)entry, names+1, classes+1, closure)) \ + return True; \ + } \ + } + +/* add tight/loose entry to the search list, return True if list is full */ +/*ARGSUSED*/ +static Bool AppendLEntry( + LTable table, + XrmNameList names, + XrmClassList classes, + register SClosure closure) +{ + /* check for duplicate */ + if (closure->idx >= 0 && closure->list[closure->idx] == table) + return False; + if (closure->idx == closure->limit) + return True; + /* append it */ + closure->idx++; + closure->list[closure->idx] = table; + return False; +} + +/* add loose entry to the search list, return True if list is full */ +/*ARGSUSED*/ +static Bool AppendLooseLEntry( + LTable table, + XrmNameList names, + XrmClassList classes, + register SClosure closure) +{ + /* check for duplicate */ + if (closure->idx >= 0 && closure->list[closure->idx] == table) + return False; + if (closure->idx >= closure->limit - 1) + return True; + /* append it */ + closure->idx++; + closure->list[closure->idx] = LOOSESEARCH; + closure->idx++; + closure->list[closure->idx] = table; + return False; +} + +/* search for a leaf table */ +static Bool SearchNEntry( + NTable table, + XrmNameList names, + XrmClassList classes, + SClosure closure) +{ + register NTable entry; + register XrmQuark q; + register unsigned int leaf; + Bool (*get)( + NTable table, + XrmNameList names, + XrmClassList classes, + SClosure closure); + + if (names[1]) { + get = SearchNEntry; /* recurse */ + leaf = 0; + } else { + get = (getNTableSProcp)AppendLEntry; /* bottom of recursion */ + leaf = 1; + } + GTIGHTLOOSE(*names, AppendLooseLEntry); /* do name, tight and loose */ + GTIGHTLOOSE(*classes, AppendLooseLEntry); /* do class, tight and loose */ + if (table->hasany) { + GTIGHTLOOSE(XrmQANY, AppendLooseLEntry); /* do ANY, tight and loose */ + } + if (table->hasloose) { + while (1) { + names++; + classes++; + if (!*names) + break; + if (!names[1]) { + get = (getNTableSProcp)AppendLEntry; /* bottom of recursion */ + leaf = 1; + } + GLOOSE(*names, AppendLooseLEntry); /* loose names */ + GLOOSE(*classes, AppendLooseLEntry); /* loose classes */ + if (table->hasany) { + GLOOSE(XrmQANY, AppendLooseLEntry); /* loose ANY */ + } + } + } + /* now look for matching leaf nodes */ + entry = table->next; + if (!entry) + return False; + if (entry->leaf) { + if (entry->tight && !table->tight) + entry = entry->next; + } else { + entry = entry->next; + if (!entry || !entry->tight) + return False; + } + if (!entry || entry->name != table->name) + return False; + /* found one */ + if (entry->hasloose && + AppendLooseLEntry((LTable)entry, names, classes, closure)) + return True; + if (entry->tight && entry == table->next && (entry = entry->next) && + entry->name == table->name && entry->hasloose) + return AppendLooseLEntry((LTable)entry, names, classes, closure); + return False; +} + +Bool XrmQGetSearchList( + XrmDatabase db, + XrmNameList names, + XrmClassList classes, + XrmSearchList searchList, /* RETURN */ + int listLength) +{ + register NTable table; + SClosureRec closure; + + if (listLength <= 0) + return False; + closure.list = (LTable *)searchList; + closure.idx = -1; + closure.limit = listLength - 2; + if (db) { + _XLockMutex(&db->linfo); + table = db->table; + if (*names) { + if (table && !table->leaf) { + if (SearchNEntry(table, names, classes, &closure)) { + _XUnlockMutex(&db->linfo); + return False; + } + } else if (table && table->hasloose && + AppendLooseLEntry((LTable)table, names, classes, + &closure)) { + _XUnlockMutex(&db->linfo); + return False; + } + } else { + if (table && !table->leaf) + table = table->next; + if (table && + AppendLEntry((LTable)table, names, classes, &closure)) { + _XUnlockMutex(&db->linfo); + return False; + } + } + _XUnlockMutex(&db->linfo); + } + closure.list[closure.idx + 1] = (LTable)NULL; + return True; +} + +Bool XrmQGetSearchResource( + XrmSearchList searchList, + register XrmName name, + register XrmClass class, + XrmRepresentation *pType, /* RETURN */ + XrmValue *pValue) /* RETURN */ +{ + register LTable *list; + register LTable table; + register VEntry entry = NULL; + int flags; + +/* find tight or loose entry */ +#define VTIGHTLOOSE(q) \ + entry = LeafHash(table, q); \ + while (entry && entry->name != q) \ + entry = entry->next; \ + if (entry) \ + break + +/* find loose entry */ +#define VLOOSE(q) \ + entry = LeafHash(table, q); \ + while (entry && entry->name != q) \ + entry = entry->next; \ + if (entry) { \ + if (!entry->tight) \ + break; \ + if ((entry = entry->next) && entry->name == q) \ + break; \ + } + + list = (LTable *)searchList; + /* figure out which combination of name and class we need to search for */ + flags = 0; + if (IsResourceQuark(name)) + flags = 2; + if (IsResourceQuark(class)) + flags |= 1; + if (!flags) { + /* neither name nor class has ever been used to name a resource */ + table = (LTable)NULL; + } else if (flags == 3) { + /* both name and class */ + while ((table = *list++)) { + if (table != LOOSESEARCH) { + VTIGHTLOOSE(name); /* do name, tight and loose */ + VTIGHTLOOSE(class); /* do class, tight and loose */ + } else { + table = *list++; + VLOOSE(name); /* do name, loose only */ + VLOOSE(class); /* do class, loose only */ + } + } + } else { + /* just one of name or class */ + if (flags == 1) + name = class; + while ((table = *list++)) { + if (table != LOOSESEARCH) { + VTIGHTLOOSE(name); /* tight and loose */ + } else { + table = *list++; + VLOOSE(name); /* loose only */ + } + } + } + if (table) { + /* found a match */ + if (entry->string) { + *pType = XrmQString; + pValue->addr = StringValue(entry); + } else { + *pType = RepType(entry); + pValue->addr = DataValue(entry); + } + pValue->size = entry->size; + return True; + } + *pType = NULLQUARK; + pValue->addr = (XPointer)NULL; + pValue->size = 0; + return False; + +#undef VTIGHTLOOSE +#undef VLOOSE +} + +/* look for a tight/loose value */ +static Bool GetVEntry( + LTable table, + XrmNameList names, + XrmClassList classes, + VClosure closure) +{ + register VEntry entry; + register XrmQuark q; + + /* try name first */ + q = *names; + entry = LeafHash(table, q); + while (entry && entry->name != q) + entry = entry->next; + if (!entry) { + /* not found, try class */ + q = *classes; + entry = LeafHash(table, q); + while (entry && entry->name != q) + entry = entry->next; + if (!entry) + return False; + } + if (entry->string) { + *closure->type = XrmQString; + closure->value->addr = StringValue(entry); + } else { + *closure->type = RepType(entry); + closure->value->addr = DataValue(entry); + } + closure->value->size = entry->size; + return True; +} + +/* look for a loose value */ +static Bool GetLooseVEntry( + LTable table, + XrmNameList names, + XrmClassList classes, + VClosure closure) +{ + register VEntry entry; + register XrmQuark q; + +#define VLOOSE(ename) \ + q = ename; \ + entry = LeafHash(table, q); \ + while (entry && entry->name != q) \ + entry = entry->next; \ + if (entry && entry->tight && (entry = entry->next) && entry->name != q) \ + entry = (VEntry)NULL; + + /* bump to last component */ + while (names[1]) { + names++; + classes++; + } + VLOOSE(*names); /* do name, loose only */ + if (!entry) { + VLOOSE(*classes); /* do class, loose only */ + if (!entry) + return False; + } + if (entry->string) { + *closure->type = XrmQString; + closure->value->addr = StringValue(entry); + } else { + *closure->type = RepType(entry); + closure->value->addr = DataValue(entry); + } + closure->value->size = entry->size; + return True; + +#undef VLOOSE +} + +/* recursive search for a value */ +static Bool GetNEntry( + NTable table, + XrmNameList names, + XrmClassList classes, + VClosure closure) +{ + register NTable entry; + register XrmQuark q; + register unsigned int leaf; + Bool (*get)( + NTable table, + XrmNameList names, + XrmClassList classes, + VClosure closure); + NTable otable; + + if (names[2]) { + get = GetNEntry; /* recurse */ + leaf = 0; + } else { + get = (getNTableVProcp)GetVEntry; /* bottom of recursion */ + leaf = 1; + } + GTIGHTLOOSE(*names, GetLooseVEntry); /* do name, tight and loose */ + GTIGHTLOOSE(*classes, GetLooseVEntry); /* do class, tight and loose */ + if (table->hasany) { + GTIGHTLOOSE(XrmQANY, GetLooseVEntry); /* do ANY, tight and loose */ + } + if (table->hasloose) { + while (1) { + names++; + classes++; + if (!names[1]) + break; + if (!names[2]) { + get = (getNTableVProcp)GetVEntry; /* bottom of recursion */ + leaf = 1; + } + GLOOSE(*names, GetLooseVEntry); /* do name, loose only */ + GLOOSE(*classes, GetLooseVEntry); /* do class, loose only */ + if (table->hasany) { + GLOOSE(XrmQANY, GetLooseVEntry); /* do ANY, loose only */ + } + } + } + /* look for matching leaf tables */ + otable = table; + table = table->next; + if (!table) + return False; + if (table->leaf) { + if (table->tight && !otable->tight) + table = table->next; + } else { + table = table->next; + if (!table || !table->tight) + return False; + } + if (!table || table->name != otable->name) + return False; + /* found one */ + if (table->hasloose && + GetLooseVEntry((LTable)table, names, classes, closure)) + return True; + if (table->tight && table == otable->next) { + table = table->next; + if (table && table->name == otable->name && table->hasloose) + return GetLooseVEntry((LTable)table, names, classes, closure); + } + return False; +} + +Bool XrmQGetResource( + XrmDatabase db, + XrmNameList names, + XrmClassList classes, + XrmRepresentation *pType, /* RETURN */ + XrmValuePtr pValue) /* RETURN */ +{ + register NTable table; + VClosureRec closure; + + if (db && *names) { + _XLockMutex(&db->linfo); + closure.type = pType; + closure.value = pValue; + table = db->table; + if (names[1]) { + if (table && !table->leaf) { + if (GetNEntry(table, names, classes, &closure)) { + _XUnlockMutex(&db->linfo); + return True; + } + } else if (table && table->hasloose && + GetLooseVEntry((LTable)table, names, classes, &closure)) { + _XUnlockMutex (&db->linfo); + return True; + } + } else { + if (table && !table->leaf) + table = table->next; + if (table && GetVEntry((LTable)table, names, classes, &closure)) { + _XUnlockMutex(&db->linfo); + return True; + } + } + _XUnlockMutex(&db->linfo); + } + *pType = NULLQUARK; + pValue->addr = (XPointer)NULL; + pValue->size = 0; + return False; +} + +Bool +XrmGetResource(XrmDatabase db, _Xconst char *name_str, _Xconst char *class_str, + XrmString *pType_str, XrmValuePtr pValue) +{ + XrmName names[MAXDBDEPTH+1]; + XrmClass classes[MAXDBDEPTH+1]; + XrmRepresentation fromType; + Bool result; + + XrmStringToNameList(name_str, names); + XrmStringToClassList(class_str, classes); + result = XrmQGetResource(db, names, classes, &fromType, pValue); + (*pType_str) = XrmQuarkToString(fromType); + return result; +} + +/* destroy all values, plus table itself */ +static void DestroyLTable( + LTable table) +{ + register int i; + register VEntry *buckets; + register VEntry entry, next; + + buckets = table->buckets; + for (i = table->table.mask; i >= 0; i--, buckets++) { + for (next = *buckets; (entry = next); ) { + next = entry->next; + Xfree((char *)entry); + } + } + Xfree((char *)table->buckets); + Xfree((char *)table); +} + +/* destroy all contained tables, plus table itself */ +static void DestroyNTable( + NTable table) +{ + register int i; + register NTable *buckets; + register NTable entry, next; + + buckets = NodeBuckets(table); + for (i = table->mask; i >= 0; i--, buckets++) { + for (next = *buckets; (entry = next); ) { + next = entry->next; + if (entry->leaf) + DestroyLTable((LTable)entry); + else + DestroyNTable(entry); + } + } + Xfree((char *)table); +} + +const char * +XrmLocaleOfDatabase( + XrmDatabase db) +{ + const char* retval; + _XLockMutex(&db->linfo); + retval = (*db->methods->lcname)(db->mbstate); + _XUnlockMutex(&db->linfo); + return retval; +} + +void XrmDestroyDatabase( + XrmDatabase db) +{ + register NTable table, next; + + if (db) { + _XLockMutex(&db->linfo); + for (next = db->table; (table = next); ) { + next = table->next; + if (table->leaf) + DestroyLTable((LTable)table); + else + DestroyNTable(table); + } + _XUnlockMutex(&db->linfo); + _XFreeMutex(&db->linfo); + (*db->methods->destroy)(db->mbstate); + Xfree((char *)db); + } +} |