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-rw-r--r--libXaw/src/MultiSrc.c3234
1 files changed, 1617 insertions, 1617 deletions
diff --git a/libXaw/src/MultiSrc.c b/libXaw/src/MultiSrc.c
index affdd6d89..e9e4bda12 100644
--- a/libXaw/src/MultiSrc.c
+++ b/libXaw/src/MultiSrc.c
@@ -1,1617 +1,1617 @@
-/*
- * Copyright 1991 by OMRON Corporation
- *
- * 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, and that the name OMRON not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. OMRON makes no representations
- * about the suitability of this software for any purpose. It is provided
- * "as is" without express or implied warranty.
- *
- * OMRON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL OMRON 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
- * TORTUOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- * PERFORMANCE OF THIS SOFTWARE.
- *
- * Authors: Chris Peterson MIT X Consortium
- * Li Yuhong OMRON Corporation
- * Frank Sheeran OMRON Corporation
- *
- * Much code taken from X11R3 String and Disk Sources.
- */
-
-/*
-
-Copyright 1991, 1994, 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 <stdlib.h>
-#include <ctype.h>
-#include <errno.h>
-#include <X11/IntrinsicP.h>
-#include <X11/StringDefs.h>
-#include <X11/Xfuncs.h>
-#include <X11/Xos.h>
-#include <X11/Xmu/CharSet.h>
-#include <X11/Xmu/Misc.h>
-#include <X11/Xaw/XawInit.h>
-#include <X11/Xaw/MultiSrcP.h>
-#include <X11/Xaw/XawImP.h>
-#include "XawI18n.h"
-#include "Private.h"
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-#define MAGIC_VALUE ((XawTextPosition)-1)
-#define streq(a, b) (strcmp((a), (b)) == 0)
-
-#ifdef X_NOT_POSIX
-#define Off_t long
-#define Size_t unsigned int
-#else
-#define Off_t off_t
-#define Size_t size_t
-#endif
-
-
-/*
- * Class Methods
- */
-static XawTextPosition ReadText(Widget, XawTextPosition, XawTextBlock*, int);
-static int ReplaceText(Widget, XawTextPosition, XawTextPosition,
- XawTextBlock*);
-static XawTextPosition Scan(Widget, XawTextPosition, XawTextScanType,
- XawTextScanDirection, int, Bool);
-static XawTextPosition Search(Widget, XawTextPosition, XawTextScanDirection,
- XawTextBlock*);
-static void XawMultiSrcClassInitialize(void);
-static void XawMultiSrcDestroy(Widget);
-static void XawMultiSrcInitialize(Widget, Widget, ArgList, Cardinal*);
-static Boolean XawMultiSrcSetValues(Widget, Widget, Widget,
- ArgList, Cardinal*);
-static void XawMultiSrcGetValuesHook(Widget, ArgList, Cardinal*);
-
-/*
- * Prototypes
- */
-static MultiPiece *AllocNewPiece(MultiSrcObject, MultiPiece*);
-static void BreakPiece(MultiSrcObject, MultiPiece*);
-static Boolean CvtMultiTypeToString(Display*, XrmValuePtr, Cardinal*,
- XrmValuePtr, XrmValuePtr, XtPointer*);
-static void CvtStringToMultiType(XrmValuePtr, Cardinal*,
- XrmValuePtr, XrmValuePtr);
-static MultiPiece *FindPiece(MultiSrcObject, XawTextPosition,
- XawTextPosition*);
-static void FreeAllPieces(MultiSrcObject);
-static FILE *InitStringOrFile(MultiSrcObject, Bool);
-static void LoadPieces(MultiSrcObject, FILE*, char*);
-static void RemovePiece(MultiSrcObject, MultiPiece*);
-static void RemoveOldStringOrFile(MultiSrcObject, Bool);
-static String StorePiecesInString(MultiSrcObject);
-static Bool WriteToFile(String, String);
-static void GetDefaultPieceSize(Widget, int, XrmValue*);
-
-/*
- * Initialization
- */
-#define offset(field) XtOffsetOf(MultiSrcRec, multi_src.field)
-static XtResource resources[] = {
- {
- XtNstring,
- XtCString,
- XtRString,
- sizeof(XtPointer),
- offset(string),
- XtRPointer,
- NULL
- },
- {
- XtNtype,
- XtCType,
- XtRMultiType,
- sizeof(XawAsciiType),
- offset(type),
- XtRImmediate,
- (XtPointer)XawAsciiString
- },
- {
- XtNdataCompression,
- XtCDataCompression,
- XtRBoolean,
- sizeof(Boolean),
- offset(data_compression),
- XtRImmediate,
- (XtPointer)False
- },
- {
- XtNpieceSize,
- XtCPieceSize,
- XtRInt,
- sizeof(XawTextPosition),
- offset(piece_size),
- XtRCallProc,
- (XtPointer)GetDefaultPieceSize
- },
-#ifdef OLDXAW
- {
- XtNcallback,
- XtCCallback,
- XtRCallback,
- sizeof(XtPointer),
- offset(callback),
- XtRCallback,
- (XtPointer)NULL
- },
-#endif
- {
- XtNuseStringInPlace,
- XtCUseStringInPlace,
- XtRBoolean,
- sizeof(Boolean),
- offset(use_string_in_place),
- XtRImmediate,
- (XtPointer)False
- },
- {
- XtNlength,
- XtCLength,
- XtRInt,
- sizeof(int),
- offset(multi_length),
- XtRImmediate,
- (XtPointer)MAGIC_VALUE
- },
-};
-#undef offset
-
-#define superclass (&textSrcClassRec)
-MultiSrcClassRec multiSrcClassRec = {
- /* object */
- {
- (WidgetClass)superclass, /* superclass */
- "MultiSrc", /* class_name */
- sizeof(MultiSrcRec), /* widget_size */
- XawMultiSrcClassInitialize, /* class_initialize */
- NULL, /* class_part_initialize */
- False, /* class_inited */
- XawMultiSrcInitialize, /* initialize */
- NULL, /* initialize_hook */
- NULL, /* obj1 */
- NULL, /* obj2 */
- 0, /* obj3 */
- resources, /* resources */
- XtNumber(resources), /* num_resources */
- NULLQUARK, /* xrm_class */
- False, /* obj4 */
- False, /* obj5 */
- False, /* obj6 */
- False, /* obj7 */
- XawMultiSrcDestroy, /* destroy */
- NULL, /* obj8 */
- NULL, /* obj9 */
- XawMultiSrcSetValues, /* set_values */
- NULL, /* set_values_hook */
- NULL, /* obj10 */
- XawMultiSrcGetValuesHook, /* get_values_hook */
- NULL, /* obj11 */
- XtVersion, /* version */
- NULL, /* callback_private */
- NULL, /* obj12 */
- NULL, /* obj13 */
- NULL, /* obj14 */
- NULL, /* extension */
- },
- /* text_src */
- {
- ReadText, /* Read */
- ReplaceText, /* Replace */
- Scan, /* Scan */
- Search, /* Search */
- XtInheritSetSelection, /* SetSelection */
- XtInheritConvertSelection, /* ConvertSelection */
- },
- /* multi_src */
- {
- NULL, /* extension */
- },
-};
-
-WidgetClass multiSrcObjectClass = (WidgetClass)&multiSrcClassRec;
-
-static XrmQuark Qstring, Qfile;
-
-/*
- * Implementation
- */
-static void
-XawMultiSrcClassInitialize(void)
-{
- XawInitializeWidgetSet();
- Qstring = XrmPermStringToQuark(XtEstring);
- Qfile = XrmPermStringToQuark(XtEfile);
- XtAddConverter(XtRString, XtRMultiType, CvtStringToMultiType, NULL, 0);
- XtSetTypeConverter(XtRMultiType, XtRString, CvtMultiTypeToString, NULL, 0,
- XtCacheNone, NULL);
-}
-
-/*
- * Function:
- * XawMultiSrcInitialize
- *
- * Parameters:
- * request - widget requested by the argument list
- * cnew - the new widget with both resource and non resource values
- * args - (unused)
- * num_args - (unused)
- *
- * Description:
- * Initializes the multi src object
- */
-/*ARGSUSED*/
-static void
-XawMultiSrcInitialize(Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- MultiSrcObject src = (MultiSrcObject)cnew;
- FILE *file;
-
- /*
- * Set correct flags (override resources) depending upon widget class
- */
-#ifdef OLDXAW
- src->multi_src.changes = False;
-#else
- src->text_src.changed = False;
-#endif
- src->multi_src.allocated_string = False;
-
- if (src->multi_src.use_string_in_place && src->multi_src.string == NULL)
- src->multi_src.use_string_in_place = False;
-
- file = InitStringOrFile(src, src->multi_src.type == XawAsciiFile);
- LoadPieces(src, file, NULL);
-
- if (file != NULL)
- fclose(file);
- src->text_src.text_format = XawFmtWide;
-}
-
-/*
- * Function:
- * ReadText
- *
- * Parameters:
- * w - MultiSource object
- * pos - position of the text to retrieve
- * text - text block that will contain returned text
- * length - maximum number of characters to read
- *
- * Description:
- * This function reads the source.
- *
- * Returns:
- * The character position following the retrieved text.
- */
-static XawTextPosition
-ReadText(Widget w, XawTextPosition pos, XawTextBlock *text, int length)
-{
- MultiSrcObject src = (MultiSrcObject)w;
- XawTextPosition count, start;
- MultiPiece *piece = FindPiece(src, pos, &start);
-
- text->format = XawFmtWide;
- text->firstPos = pos;
- text->ptr = (char *)(piece->text + (pos - start));
- count = piece->used - (pos - start);
- text->length = Max(0, (length > count) ? count : length);
-
- return (pos + text->length);
-}
-
-/*
- * Function:
- * ReplaceText
- *
- * Parameters:
- * w - MultiSource object
- * startPos - ends of text that will be removed
- * endPos - ""
- * text - new text to be inserted into buffer at startPos
- *
- * Description:
- * Replaces a block of text with new text.
- *
- * Returns:
- * XawEditDone on success, XawEditError otherwise
- */
-/*ARGSUSED*/
-static int
-ReplaceText(Widget w, XawTextPosition startPos, XawTextPosition endPos,
- XawTextBlock *u_text_p)
-{
- MultiSrcObject src = (MultiSrcObject)w;
- MultiPiece *start_piece, *end_piece, *temp_piece;
- XawTextPosition start_first, end_first;
- int length, firstPos;
- wchar_t *wptr;
- Bool local_artificial_block = False;
- XawTextBlock text;
-
- /* STEP 1: The user handed me a text block called `u_text' that may be
- * in either FMTWIDE or FMT8BIT (ie MB.) Later code needs the block
- * `text' to hold FMTWIDE. So, this copies `u_text' to `text', and if
- * `u_text' was MB, I knock it up to WIDE
- */
- if (u_text_p->length == 0) /* if so, the block contents never ref'd */
- text.length = 0;
-
- else if (u_text_p->format == XawFmtWide) {
- local_artificial_block = False; /* don't have to free it ourselves */
- text.firstPos = u_text_p->firstPos;
- text.length = u_text_p->length;
- text.ptr = u_text_p->ptr;
- }
- else {
- /*
- * WARNING! u_text->firstPos and length are in units of CHAR,
- * not CHARACTERS!
- */
- local_artificial_block = True; /* have to free it ourselves */
- text.firstPos = 0;
- text.length = u_text_p->length; /* _XawTextMBToWC converts this
- * to wchar len
- */
-
- text.ptr = (char*)_XawTextMBToWC(XtDisplay(XtParent(w)),
- &u_text_p->ptr[u_text_p->firstPos],
- &text.length);
-
- /* I assert the following assignment is not needed - since Step 4
- depends on length, it has no need of a terminating NULL. I think
- the ASCII-version has the same needless NULL. */
- /*((wchar_t*)text.ptr)[ text.length ] = NULL;*/
- }
-
- /* STEP 2: some initialization... */
- if (src->text_src.edit_mode == XawtextRead)
- return (XawEditError);
-
- start_piece = FindPiece(src, startPos, &start_first);
- end_piece = FindPiece(src, endPos, &end_first);
-
- /* STEP 3: remove the empty pieces... */
- if (start_piece != end_piece) {
- temp_piece = start_piece->next;
-
- /* If empty and not the only piece then remove it */
- if (((start_piece->used = startPos - start_first) == 0)
- && !(start_piece->next == NULL && start_piece->prev == NULL))
- RemovePiece(src, start_piece);
-
- while (temp_piece != end_piece) {
- temp_piece = temp_piece->next;
- RemovePiece(src, temp_piece->prev);
- }
- end_piece->used -= endPos - end_first;
- if (end_piece->used != 0)
- memmove(end_piece->text, end_piece->text + endPos - end_first,
- end_piece->used * sizeof(wchar_t));
- }
- else { /* We are fully in one piece */
- if ((start_piece->used -= endPos - startPos) == 0) {
- if (!(start_piece->next == NULL && start_piece->prev == NULL))
- RemovePiece(src, start_piece);
- }
- else {
- memmove(start_piece->text + (startPos - start_first),
- start_piece->text + (endPos - start_first),
- (start_piece->used - (startPos - start_first)) *
- sizeof(wchar_t));
- if (src->multi_src.use_string_in_place &&
- ((src->multi_src.length - (endPos - startPos))
- < src->multi_src.piece_size - 1))
- start_piece->text[src->multi_src.length - (endPos - startPos)] =
- (wchar_t)0;
- }
- }
-
- src->multi_src.length += text.length -(endPos - startPos);
-
- /* STEP 4: insert the new stuff */
- if ( text.length != 0) {
- start_piece = FindPiece(src, startPos, &start_first);
- length = text.length;
- firstPos = text.firstPos;
-
- while (length > 0) {
- wchar_t *ptr;
- int fill;
-
- if (src->multi_src.use_string_in_place) {
- if (start_piece->used == src->multi_src.piece_size - 1) {
-
- /*
- * The string is used in place, then the string
- * is not allowed to grow
- */
- start_piece->used = src->multi_src.length =
- src->multi_src.piece_size - 1;
-
- start_piece->text[src->multi_src.length] = (wchar_t)0;
- return (XawEditError);
- }
- }
-
- if (start_piece->used == src->multi_src.piece_size) {
- BreakPiece(src, start_piece);
- start_piece = FindPiece(src, startPos, &start_first);
- }
-
- fill = Min((int)(src->multi_src.piece_size - start_piece->used), length);
-
- ptr = start_piece->text + (startPos - start_first);
- memmove(ptr + fill, ptr, (start_piece->used -
- (startPos - start_first)) * sizeof(wchar_t));
- wptr =(wchar_t *)text.ptr;
- (void)wcsncpy(ptr, wptr + firstPos, fill);
-
- startPos += fill;
- firstPos += fill;
- start_piece->used += fill;
- length -= fill;
- }
- }
-
- if (local_artificial_block == True)
- /* In other words, text is not the u_text that the user handed me but
- one I made myself. I only care, because I need to free the string */
- XtFree(text.ptr);
-
- if (src->multi_src.use_string_in_place)
- start_piece->text[start_piece->used] = (wchar_t)0;
-
-#ifdef OLDXAW
- src->multi_src.changes = True;
- XtCallCallbacks(w, XtNcallback, NULL);
-#endif
-
- return (XawEditDone);
-}
-
-/*
- * Function:
- * Scan
- *
- * Parameters:
- * w - MultiSource widget
- * position - position to start scanning
- * type - type of thing to scan for
- * dir - direction to scan
- * count - which occurance if this thing to search for
- * include - whether or not to include the character found in
- * the position that is returned
- *
- * Description:
- * Scans the text source for the number and type of item specified.
- *
- * Returns:
- * The position of the item found
- *
- * Note:
- * While there are only 'n' characters in the file there are n+1
- * possible cursor positions (one before the first character and
- * one after the last character
- */
-static XawTextPosition
-Scan(Widget w, register XawTextPosition position, XawTextScanType type,
- XawTextScanDirection dir, int count, Bool include)
-{
- MultiSrcObject src = (MultiSrcObject)w;
- register char inc;
- MultiPiece *piece;
- XawTextPosition first, first_eol_position = position;
- register wchar_t *ptr;
- int cnt = count;
-
- if (type == XawstAll) {
- if (dir == XawsdRight)
- return (src->multi_src.length);
- return (0);
- }
-
- /* STEP 1: basic sanity checks */
- if (position > src->multi_src.length)
- position = src->multi_src.length;
-
- if (dir == XawsdRight) {
- if (position == src->multi_src.length)
- return (src->multi_src.length);
- inc = 1;
- }
- else {
- if (position == 0)
- return (0);
- inc = -1;
- position--;
- }
-
- piece = FindPiece(src, position, &first);
-
- if (piece->used == 0)
- return (0);
-
- ptr = (position - first) + piece->text;
-
- switch (type) {
- case XawstEOL:
- case XawstParagraph:
- case XawstWhiteSpace:
- case XawstAlphaNumeric:
- for (; cnt > 0 ; cnt--) {
- Bool non_space = False, first_eol = True;
-
- /*CONSTCOND*/
- while (True) {
- register wchar_t c;
-
- if (ptr < piece->text) {
- piece = piece->prev;
- if (piece == NULL) /* Begining of text */
- return (0);
- ptr = piece->text + piece->used - 1;
- c = *ptr;
- }
- else if (ptr >= piece->text + piece->used) {
- piece = piece->next;
- if (piece == NULL) /* End of text */
- return (src->multi_src.length);
- ptr = piece->text;
- }
-
- c = *ptr;
- ptr += inc;
- position += inc;
-
- if (type == XawstAlphaNumeric) {
- if (!iswalnum(c)) {
- if (non_space)
- break;
- }
- else
- non_space = True;
- }
- else if (type == XawstWhiteSpace) {
- if (iswspace(c)) {
- if (non_space)
- break;
- }
- else
- non_space = True;
- }
- else if (type == XawstEOL) {
- if (c == _Xaw_atowc(XawLF))
- break;
- }
- else { /* XawstParagraph */
- if (first_eol) {
- if (c == _Xaw_atowc(XawLF)) {
- first_eol_position = position;
- first_eol = False;
- }
- }
- else
- if (c == _Xaw_atowc(XawLF))
- break;
- else if (!iswspace(c))
- first_eol = True;
- }
- }
- }
- if (!include) {
- if (type == XawstParagraph)
- position = first_eol_position;
- if (count)
- position -= inc;
- }
- break;
- case XawstPositions:
- position += count * inc;
- break;
- default:
- break;
- }
-
- if (dir == XawsdLeft)
- position++;
-
- if (position >= src->multi_src.length)
- return (src->multi_src.length);
- if (position < 0)
- return (0);
-
- return (position);
-}
-
-/*
- * Function:
- * Search
- *
- * Parameters:
- * w - MultiSource objecy
- * position - position to start scanning
- * dir - direction to scan
- * text - text block to search for
- *
- * Description:
- * Searchs the text source for the text block passed.
- *
- * Returns:
- * The position of the item found
- */
-static XawTextPosition
-Search(Widget w, register XawTextPosition position, XawTextScanDirection dir,
- XawTextBlock *text)
-{
- MultiSrcObject src = (MultiSrcObject)w;
- register int count = 0;
- wchar_t *ptr;
- wchar_t *wtarget;
- int wtarget_len;
- Display *d = XtDisplay(XtParent(w));
- MultiPiece *piece;
- wchar_t *buf;
- XawTextPosition first;
- register char inc;
- int cnt;
-
- /* STEP 1: First, a brief sanity check */
- if (dir == XawsdRight)
- inc = 1;
- else {
- inc = -1;
- if (position == 0)
- return (XawTextSearchError);
- position--;
- }
-
- /* STEP 2: Ensure I have a local wide string.. */
-
- /* Since this widget stores 32bit chars, I check here to see if
- I'm being passed a string claiming to be 8bit chars (ie, MB text.)
- If that is the case, naturally I convert to 32bit format */
-
- /*if the block was FMT8BIT, length will convert to REAL wchar count bellow */
- wtarget_len = text->length;
-
- if (text->format == XawFmtWide)
- wtarget = &(((wchar_t*)text->ptr) [text->firstPos]);
- else {
- /* The following converts wtarget_len from byte len to wchar count */
- wtarget = _XawTextMBToWC(d, &text->ptr[text->firstPos], &wtarget_len);
- }
-
- /* OK, I can now assert that wtarget holds wide characters, wtarget_len
- holds an accurate count of those characters, and that firstPos has been
- effectively factored out of the following computations */
-
- /* STEP 3: SEARCH! */
- buf = (wchar_t *)XtMalloc(sizeof(wchar_t) * wtarget_len);
- (void)wcsncpy(buf, wtarget, wtarget_len);
- piece = FindPiece(src, position, &first);
- ptr = (position - first) + piece->text;
-
- /*CONSTCOND*/
- while (True) {
- if (*ptr == (dir == XawsdRight ? *(buf + count)
- : *(buf + wtarget_len - count - 1))) {
- if (count == text->length - 1)
- break;
- else
- count++;
- }
- else {
- if (count != 0) {
- position -=inc * count;
- ptr -= inc * count;
- }
- count = 0;
- }
-
- ptr += inc;
- position += inc;
-
- while (ptr < piece->text) {
- cnt = piece->text - ptr;
-
- piece = piece->prev;
- if (piece == NULL) { /* Begining of text */
- XtFree((char *)buf);
- return (XawTextSearchError);
- }
- ptr = piece->text + piece->used - cnt;
- }
-
- while (ptr >= piece->text + piece->used) {
- cnt = ptr - (piece->text + piece->used);
-
- piece = piece->next;
- if (piece == NULL) { /* End of text */
- XtFree((char *)buf);
- return (XawTextSearchError);
- }
- ptr = piece->text + cnt;
- }
- }
-
- XtFree((char *)buf);
- if (dir == XawsdLeft)
- return(position);
-
- return(position - (wtarget_len - 1));
-}
-
-/*
- * Function:
- * XawMultiSrcSetValues
- *
- * Parameters:
- * current - current state of the widget
- * request - what was requested
- * cnew - what the widget will become
- * args - representation of resources that have changed
- * num_args - number of changed resources
- *
- * Description:
- * Sets the values for the MultiSource.
- *
- * Returns:
- * True if redisplay is needed
- */
-static Boolean
-XawMultiSrcSetValues(Widget current, Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- MultiSrcObject src = (MultiSrcObject)cnew;
- MultiSrcObject old_src = (MultiSrcObject)current;
- XtAppContext app_con = XtWidgetToApplicationContext(cnew);
- Bool total_reset = False, string_set = False;
- FILE *file;
- unsigned int i;
-
- if (old_src->multi_src.use_string_in_place
- != src->multi_src.use_string_in_place) {
- XtAppWarning(app_con,
- "MultiSrc: The XtNuseStringInPlace resources "
- "may not be changed.");
- src->multi_src.use_string_in_place =
- old_src->multi_src.use_string_in_place;
- }
-
- for (i = 0; i < *num_args ; i++)
- if (streq(args[i].name, XtNstring)) {
- string_set = True;
- break;
- }
-
- if (string_set || old_src->multi_src.type != src->multi_src.type) {
- RemoveOldStringOrFile(old_src, string_set);
- src->multi_src.allocated_string = old_src->multi_src.allocated_string;
- file = InitStringOrFile(src, string_set);
-
- LoadPieces(src, file, NULL);
- if (file != NULL)
- fclose(file);
-#ifndef OLDXAW
- for (i = 0; i < src->text_src.num_text; i++)
- /* Tell text widget what happened */
- XawTextSetSource(src->text_src.text[i], cnew, 0);
-#else
- XawTextSetSource(XtParent(cnew), cnew, 0);
-#endif
- total_reset = True;
- }
-
- if (old_src->multi_src.multi_length != src->multi_src.multi_length)
- src->multi_src.piece_size = src->multi_src.multi_length + 1;
-
- if ( !total_reset && old_src->multi_src.piece_size
- != src->multi_src.piece_size) {
- String mb_string = StorePiecesInString(old_src);
-
- if (mb_string != 0) {
- FreeAllPieces(old_src);
- LoadPieces(src, NULL, mb_string);
- XtFree(mb_string);
- }
- else {
- /* If the buffer holds bad chars, don't touch it... */
- XtAppWarningMsg(app_con,
- "convertError", "multiSource", "XawError",
- XtName(XtParent((Widget)old_src)), NULL, NULL);
- XtAppWarningMsg(app_con,
- "convertError", "multiSource", "XawError",
- "Non-character code(s) in buffer.", NULL, NULL);
- }
- }
-
- return (False);
-}
-
-static void
-XawMultiSrcGetValuesHook(Widget w, ArgList args, Cardinal *num_args)
-{
- MultiSrcObject src = (MultiSrcObject)w;
- unsigned int i;
-
- if (src->multi_src.type == XawAsciiString) {
- for (i = 0; i < *num_args ; i++) {
- if (streq(args[i].name, XtNstring)) {
- if (src->multi_src.use_string_in_place)
- *((char **)args[i].value) = (char *)
- src->multi_src.first_piece->text;
- else if (_XawMultiSave(w)) /* If save sucessful */
- *((char **)args[i].value) = (char *)src->multi_src.string;
- break;
- }
- }
- }
-}
-
-static void
-XawMultiSrcDestroy(Widget w)
-{
- RemoveOldStringOrFile((MultiSrcObject) w, True);
-}
-
-/*
- * Public routines
- */
-/*
- * Function:
- * XawMultiSourceFreeString
- *
- * Parameters:
- * w - MultiSrc widget
- *
- * Description:
- * Frees the string returned by a get values call
- * on the string when the source is of type string.
- *
- * Note:
- * The public interface is XawAsciiSourceFreeString!
- */
-void
-_XawMultiSourceFreeString(Widget w)
-{
- MultiSrcObject src = (MultiSrcObject)w;
-
- if (src->multi_src.allocated_string) {
- XtFree((char *)src->multi_src.string);
- src->multi_src.allocated_string = False;
- src->multi_src.string = NULL;
- }
-}
-
-/*
- * Function:
- * _XawMultiSave
- *
- * Parameters:
- * w - multiSrc Widget
- *
- * Description:
- * Saves all the pieces into a file or string as required.
- *
- * Returns:
- * True if the save was successful
- *
- * Note:
- * The public interface is XawAsciiSave(w)!
- */
-Bool
-_XawMultiSave(Widget w)
-{
- MultiSrcObject src = (MultiSrcObject)w;
- XtAppContext app_con = XtWidgetToApplicationContext(w);
- char *mb_string;
-
- /*
- * If using the string in place then there is no need to play games
- * to get the internal info into a readable string
- */
- if (src->multi_src.use_string_in_place)
- return (True);
-
- if (src->multi_src.type == XawAsciiFile) {
-#ifdef OLDXAW
- if (!src->multi_src.changes)
-#else
- if (!src->text_src.changed) /* No changes to save */
-#endif
- return (True);
-
- mb_string = StorePiecesInString(src);
-
- if (mb_string != 0) {
- if (WriteToFile(mb_string, (String)src->multi_src.string) == False) {
- XtFree(mb_string);
- return (False);
- }
- XtFree(mb_string);
-#ifndef OLDXAW
- src->text_src.changed = False;
-#else
- src->multi_src.changes = False;
-#endif
- return (True);
- }
- else {
- /* If the buffer holds bad chars, don't touch it... */
- XtAppWarningMsg(app_con,
- "convertError", "multiSource", "XawError",
- "Due to illegal characters, file not saved.",
- NULL, NULL);
- return (False);
- }
- }
- else {
- /* THIS FUNCTIONALITY IS UNDOCUMENTED, probably UNNEEDED? The manual
- says this routine's only function is to save files to
- disk. -Sheeran */
- mb_string = StorePiecesInString(src);
-
- if (mb_string == 0) {
- /* If the buffer holds bad chars, don't touch it... */
- XtAppWarningMsg(app_con,
- "convertError", "multiSource", "XawError",
- XtName(XtParent((Widget)src)), NULL, NULL);
- return (False);
- }
-
- /* assert: mb_string holds good characters so the buffer is fine */
- if (src->multi_src.allocated_string == True)
- XtFree((char *)src->multi_src.string);
- else
- src->multi_src.allocated_string = True;
-
- src->multi_src.string = mb_string;
- }
-#ifdef OLDXAW
- src->multi_src.changes = False;
-#else
- src->text_src.changed = False;
-#endif
-
- return (True);
-}
-
-/*
- * Function:
- * XawMultiSaveAsFile
- *
- * Parameters:
- * w - MultiSrc widget
- * name - name of the file to save this file into
- *
- * Description:
- * Save the current buffer as a file.
- *
- * Returns:
- * True if the save was sucessful
- *
- * Note:
- * The public interface is XawAsciiSaveAsFile!
- */
-Bool
-_XawMultiSaveAsFile(Widget w, _Xconst char* name)
-{
- MultiSrcObject src = (MultiSrcObject)w;
- String mb_string;
- Bool ret;
-
- mb_string = StorePiecesInString(src);
-
- if (mb_string != 0) {
- ret = WriteToFile(mb_string, (char *)name);
- XtFree(mb_string);
-
- return (ret);
- }
-
- /* otherwise there was a conversion error. So print widget name too */
- XtAppWarningMsg(XtWidgetToApplicationContext(w),
- "convertError", "multiSource", "XawError",
- XtName(XtParent(w)), NULL, NULL);
-
- return (False);
-}
-
-/*
- * Private Functions
- */
-static void
-RemoveOldStringOrFile(MultiSrcObject src, Bool checkString)
-{
- FreeAllPieces(src);
-
- if (checkString && src->multi_src.allocated_string) {
- XtFree((char *)src->multi_src.string);
- src->multi_src.allocated_string = False;
- src->multi_src.string = NULL;
- }
-}
-
-/*
- * Function:
- * WriteToFile
- *
- * Parameters:
- * string - string to write
- * name - name of the file
- *
- * Description:
- * Write the string specified to the begining of the file specified.
- *
- * Returns:
- * Returns True if sucessful, False otherwise
- */
-static Bool
-WriteToFile(String string, String name)
-{
- int fd;
-
- if (((fd = creat(name, 0666)) == -1)
- || (write(fd, string, strlen(string)) == -1))
- return (False);
-
- if (close(fd) == -1)
- return (False);
-
- return (True);
-}
-
-
-/*
- * Function:
- * StorePiecesInString
- *
- * Parameters:
- * src - the multiSrc object to gather data from
- *
- * Description:
- * Store the pieces in memory into a char string.
- *
- * Returns:
- * mb_string: Caller must free
- * (or)
- * NULL: conversion error
- */
-static String
-StorePiecesInString(MultiSrcObject src)
-{
- wchar_t *wc_string;
- char *mb_string;
- int char_count = src->multi_src.length;
- XawTextPosition first;
- MultiPiece *piece;
-
- /* I believe the char_count + 1 and the NULL termination are unneeded! FS */
- wc_string = (wchar_t*)XtMalloc((char_count + 1) * sizeof(wchar_t));
-
- for (first = 0, piece = src->multi_src.first_piece ; piece != NULL;
- first += piece->used, piece = piece->next)
- (void)wcsncpy(wc_string + first, piece->text, piece->used);
-
- wc_string[char_count] = 0;
-
- /* This will refill all pieces to capacity */
- if (src->multi_src.data_compression) {
- FreeAllPieces(src);
- LoadPieces(src, NULL, (char *)wc_string);
- }
-
- /* Lastly, convert it to a MB format and send it back */
- mb_string = _XawTextWCToMB(XtDisplayOfObject((Widget)src),
- wc_string, &char_count);
-
- /* NOTE THAT mb_string MAY BE ZERO IF THE CONVERSION FAILED */
- XtFree((char*)wc_string);
-
- return (mb_string);
-}
-
-/*
- * Function:
- * InitStringOrFile
- *
- * Parameters:
- * src - MultiSource
- *
- * Description:
- * Initializes the string or file.
- */
-static FILE *
-InitStringOrFile(MultiSrcObject src, Bool newString)
-{
- mode_t open_mode = 0;
- const char *fdopen_mode = NULL;
- int fd;
- FILE *file;
- Display *d = XtDisplayOfObject((Widget)src);
-
- if (src->multi_src.type == XawAsciiString) {
- if (src->multi_src.string == NULL)
- src->multi_src.length = 0;
-
- else if (!src->multi_src.use_string_in_place) {
- int length;
- String temp = XtNewString((char *)src->multi_src.string);
-
- if (src->multi_src.allocated_string)
- XtFree((char *)src->multi_src.string);
- src->multi_src.allocated_string = True;
- src->multi_src.string = temp;
-
- length = strlen((char *)src->multi_src.string);
-
- /* Wasteful, throwing away the WC string, but need side effect! */
- (void)_XawTextMBToWC(d, (char *)src->multi_src.string, &length);
- src->multi_src.length = (XawTextPosition)length;
- }
- else {
- src->multi_src.length = strlen((char *)src->multi_src.string);
- /* In case the length resource is incorrectly set */
- if (src->multi_src.length > src->multi_src.multi_length)
- src->multi_src.multi_length = src->multi_src.length;
-
- if (src->multi_src.multi_length == MAGIC_VALUE)
- src->multi_src.piece_size = src->multi_src.length;
- else
- src->multi_src.piece_size = src->multi_src.multi_length + 1;
- }
-
- return (NULL);
- }
-
- /*
- * type is XawAsciiFile
- */
- src->multi_src.is_tempfile = False;
-
- switch (src->text_src.edit_mode) {
- case XawtextRead:
- if (src->multi_src.string == NULL)
- XtErrorMsg("NoFile", "multiSourceCreate", "XawError",
- "Creating a read only disk widget and no file specified.",
- NULL, 0);
- open_mode = O_RDONLY;
- fdopen_mode = "r";
- break;
- case XawtextAppend:
- case XawtextEdit:
- if (src->multi_src.string == NULL) {
- src->multi_src.string = "*multi-src*";
- src->multi_src.is_tempfile = True;
- }
- else {
-/* O_NOFOLLOW is a BSD & Linux extension */
-#ifdef O_NOFOLLOW
- open_mode = O_RDWR | O_NOFOLLOW;
-#else
- open_mode = O_RDWR; /* unsafe; subject to race conditions */
-#endif
- fdopen_mode = "r+";
- }
- break;
- default:
- XtErrorMsg("badMode", "multiSourceCreate", "XawError",
- "Bad editMode for multi source; must be "
- "Read, Append or Edit.", NULL, NULL);
- }
-
- /* If is_tempfile, allocate a private copy of the text
- * Unlikely to be changed, just to set allocated_string */
- if (newString || src->multi_src.is_tempfile) {
- String temp = XtNewString((char *)src->multi_src.string);
-
- if (src->multi_src.allocated_string)
- XtFree((char *)src->multi_src.string);
- src->multi_src.string = temp;
- src->multi_src.allocated_string = True;
- }
-
- if (!src->multi_src.is_tempfile) {
- if ((fd = open((char *)src->multi_src.string, open_mode, 0666)) != -1) {
- if ((file = fdopen(fd, fdopen_mode)) != NULL) {
- (void)fseek(file, 0, SEEK_END);
- src->multi_src.length = (XawTextPosition)ftell(file);
- return(file);
- }
- }
- {
- String params[2];
- Cardinal num_params = 2;
-
- params[0] = (String)src->multi_src.string;
- params[1] = strerror(errno);
- XtAppWarningMsg(XtWidgetToApplicationContext((Widget)src),
- "openError", "multiSourceCreate", "XawWarning",
- "Cannot open file %s; %s", params, &num_params);
- }
- }
- src->multi_src.length = 0;
- return (NULL);
-}
-
-/* LoadPieces: This routine takes either the MB contents of open file
- `file' or the MB contents of string or the MB contents of
- src->multi_src.string and places them in Pieces in WC format.
-
- CAUTION: You must have src->multi_src.length set to file length bytes
- when src->multi_src.type == XawAsciiFile. src->multi_src.length must be
- the length of the parameter string if string is non-NULL
-*/
-static void
-LoadPieces(MultiSrcObject src, FILE *file, char *string)
-{
- Display *d = XtDisplayOfObject((Widget)src);
- wchar_t* local_str, *ptr;
- MultiPiece* piece = NULL;
- XawTextPosition left;
- int bytes = sizeof(wchar_t);
- char* temp_mb_holder = NULL;
-
- /*
- * This is tricky - the _XawTextMBtoWC converter uses its 3rd arg
- * in as MB length, out as WC length. We want local_length to be
- * WC count.
- */
- int local_length = src->multi_src.length;
-
- if (string != NULL) {
- /*
- * ASSERT: IF our caller passed a non-null string, THEN
- * src->multi_src.length is currently string's * byte count,
- * AND string is in a MB format
- */
- local_str = _XawTextMBToWC(d, (char *)string, &local_length);
- src->multi_src.length = (XawTextPosition) local_length;
- }
- else if (src->multi_src.type != XawAsciiFile) {
- /*
- * here, we are not changing the contents, just reloading,
- * so don't change len...
- */
- local_length = src->multi_src.string ?
- strlen((char *)src->multi_src.string) : 0;
- local_str = _XawTextMBToWC(d, (char *)src->multi_src.string,
- &local_length);
- }
- else {
- if (src->multi_src.length != 0) {
- temp_mb_holder =
- XtMalloc((src->multi_src.length + 1) * sizeof(unsigned char));
- fseek(file, 0, 0);
- src->multi_src.length = fread(temp_mb_holder,
- (Size_t)sizeof(unsigned char),
- (Size_t)src->multi_src.length, file);
- if (src->multi_src.length <= 0)
- XtAppErrorMsg(XtWidgetToApplicationContext ((Widget) src),
- "readError", "multiSource", "XawError",
- "fread returned error.", NULL, NULL);
- local_length = src->multi_src.length;
- local_str = _XawTextMBToWC(d, temp_mb_holder, &local_length);
- src->multi_src.length = local_length;
-
- if (local_str == 0) {
- String params[2];
- Cardinal num_params;
- static char err_text[] =
- "<<< FILE CONTENTS NOT REPRESENTABLE IN THIS LOCALE >>>";
-
- params[0] = XtName(XtParent((Widget)src));
- params[1] = src->multi_src.string;
- num_params = 2;
-
- XtAppWarningMsg(XtWidgetToApplicationContext((Widget)src),
- "readLocaleError", "multiSource", "XawError",
- "%s: The file `%s' contains characters "
- "not representable in this locale.",
- params, &num_params);
- src->multi_src.length = sizeof err_text;
- local_length = src->multi_src.length;
- local_str = _XawTextMBToWC(d, err_text, &local_length);
- src->multi_src.length = local_length;
- }
- }
- else
- /* ASSERT that since following while loop looks at local_length
- this isn't needed. Sheeran, Omron KK, 1993/07/15
- temp_mb_holder[src->multi_src.length] = '\0'; */
- local_str = (wchar_t*)temp_mb_holder;
- }
-
- if (src->multi_src.use_string_in_place) {
- piece = AllocNewPiece(src, piece);
- piece->used = Min(src->multi_src.length, src->multi_src.piece_size);
- piece->text = (wchar_t*)src->multi_src.string;
- return;
- }
-
- ptr = local_str;
- left = local_length;
-
- do {
- piece = AllocNewPiece(src, piece);
-
- piece->text = (wchar_t*)XtMalloc((unsigned)(src->multi_src.piece_size
- * bytes));
- piece->used = Min(left, src->multi_src.piece_size);
- if (piece->used != 0)
- (void)wcsncpy(piece->text, ptr, piece->used);
-
- left -= piece->used;
- ptr += piece->used;
- } while (left > 0);
-
- if (temp_mb_holder)
- XtFree((char*)temp_mb_holder);
-}
-
-/*
- * Function:
- * AllocNewPiece
- *
- * Parameters:
- * src - MultiSrc Widget
- * prev - the piece just before this one, or NULL
- *
- * Description:
- * Allocates a new piece of memory.
- *
- * Returns:
- * The allocated piece
- */
-static MultiPiece *
-AllocNewPiece(MultiSrcObject src, MultiPiece *prev)
-{
- MultiPiece *piece = XtNew(MultiPiece);
-
- if (prev == NULL) {
- src->multi_src.first_piece = piece;
- piece->next = NULL;
- }
- else {
- if (prev->next != NULL)
- (prev->next)->prev = piece;
- piece->next = prev->next;
- prev->next = piece;
- }
-
- piece->prev = prev;
-
- return (piece);
-}
-
-/*
- * Function:
- * FreeAllPieces
- *
- * Parameters:
- * src - MultiSrc Widget
- *
- * Description:
- * Frees all the pieces
- */
-static void
-FreeAllPieces(MultiSrcObject src)
-{
- MultiPiece *next, *first = src->multi_src.first_piece;
-
-#ifdef DEBUG
- if (first->prev != NULL)
- printf("Xaw MultiSrc Object: possible memory leak in FreeAllPieces().\n");
-#endif
-
- for (; first != NULL ; first = next) {
- next = first->next;
- RemovePiece(src, first);
- }
-}
-
-/*
- * Function:
- * RemovePiece
- *
- * Parameters:
- * piece - piece to remove
- *
- * Description:
- * Removes a piece from the list.
- */
-static void
-RemovePiece(MultiSrcObject src, MultiPiece *piece)
-{
- if (piece->prev == NULL)
- src->multi_src.first_piece = piece->next;
- else
- piece->prev->next = piece->next;
-
- if (piece->next != NULL)
- piece->next->prev = piece->prev;
-
- if (!src->multi_src.use_string_in_place)
- XtFree((char *)piece->text);
-
- XtFree((char *)piece);
-}
-
-/*
- * Function:
- * FindPiece
- *
- * Parameters:
- * src - MultiSrc Widget
- * position - position that we are searching for
- * first - position of the first character in this piece (return)
- *
- * Description:
- * Finds the piece containing the position indicated.
- *
- * Returns:
- * Piece that contains this position
- */
-static MultiPiece *
-FindPiece(MultiSrcObject src, XawTextPosition position, XawTextPosition *first)
-{
- MultiPiece *old_piece, *piece;
- XawTextPosition temp;
-
- for (old_piece = NULL, piece = src->multi_src.first_piece, temp = 0;
- piece; old_piece = piece, piece = piece->next)
- if ((temp += piece->used) > position) {
- *first = temp - piece->used;
- return (piece);
- }
-
- *first = temp - (old_piece ? old_piece->used : 0);
-
- return (old_piece); /* if we run off the end the return the last piece */
-}
-
-/*
- * Function:
- * BreakPiece
- *
- * Parameters:
- * src - MultiSrc Widget
- * piece - piece to break
- *
- * Description:
- * Breaks a full piece into two new pieces.
- */
-#define HALF_PIECE (src->multi_src.piece_size >> 1)
-static void
-BreakPiece(MultiSrcObject src, MultiPiece *piece)
-{
- MultiPiece *cnew = AllocNewPiece(src, piece);
-
- cnew->text = (wchar_t *)
- XtMalloc(src->multi_src.piece_size * sizeof(wchar_t));
- (void)wcsncpy(cnew->text, piece->text + HALF_PIECE,
- src->multi_src.piece_size - HALF_PIECE);
- piece->used = HALF_PIECE;
- cnew->used = src->multi_src.piece_size - HALF_PIECE;
-}
-
-/*ARGSUSED*/
-static void
-CvtStringToMultiType(XrmValuePtr args, Cardinal *num_args,
- XrmValuePtr fromVal, XrmValuePtr toVal)
-{
- static XawAsciiType type = XawAsciiString;
- XrmQuark q;
- char name[7];
-
- XmuNCopyISOLatin1Lowered(name, (char *)fromVal->addr, sizeof(name));
- q = XrmStringToQuark(name);
-
- if (q == Qstring)
- type = XawAsciiString;
- if (q == Qfile)
- type = XawAsciiFile;
- else {
- toVal->size = 0;
- toVal->addr = NULL;
- XtStringConversionWarning((char *)fromVal->addr, XtRAsciiType);
- }
-
- toVal->size = sizeof(XawAsciiType);
- toVal->addr = (XPointer)&type;
-}
-
-/*ARGSUSED*/
-static Boolean
-CvtMultiTypeToString(Display *dpy, XrmValuePtr args, Cardinal *num_args,
- XrmValuePtr fromVal, XrmValuePtr toVal,
- XtPointer *data)
-{
- static String buffer;
- Cardinal size;
-
- switch (*(XawAsciiType *)fromVal->addr) {
- case XawAsciiFile:
- buffer = XtEfile;
- break;
- case XawAsciiString:
- buffer = XtEstring;
- break;
- default:
- XawTypeToStringWarning(dpy, XtRAsciiType);
- toVal->addr = NULL;
- toVal->size = 0;
- return (False);
- }
-
- size = strlen(buffer) + 1;
- if (toVal->addr != NULL) {
- if (toVal->size < size) {
- toVal->size = size;
- return (False);
- }
- strcpy((char *)toVal->addr, buffer);
- }
- else
- toVal->addr = (XPointer)buffer;
- toVal->size = sizeof(String);
-
- return (True);
-}
-
-/*ARGSUSED*/
-static void
-GetDefaultPieceSize(Widget w, int offset, XrmValue *value)
-{
- static XPointer pagesize;
-
- if (pagesize == 0) {
- pagesize = (XPointer)((long)_XawGetPageSize());
- if (pagesize < (XPointer)BUFSIZ)
- pagesize = (XPointer)BUFSIZ;
- }
-
- value->addr = (XPointer)&pagesize;
-}
+/*
+ * Copyright 1991 by OMRON Corporation
+ *
+ * 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, and that the name OMRON not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. OMRON makes no representations
+ * about the suitability of this software for any purpose. It is provided
+ * "as is" without express or implied warranty.
+ *
+ * OMRON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL OMRON 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
+ * TORTUOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors: Chris Peterson MIT X Consortium
+ * Li Yuhong OMRON Corporation
+ * Frank Sheeran OMRON Corporation
+ *
+ * Much code taken from X11R3 String and Disk Sources.
+ */
+
+/*
+
+Copyright 1991, 1994, 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 <stdlib.h>
+#include <ctype.h>
+#include <errno.h>
+#include <X11/IntrinsicP.h>
+#include <X11/StringDefs.h>
+#include <X11/Xfuncs.h>
+#include <X11/Xos.h>
+#include <X11/Xmu/CharSet.h>
+#include <X11/Xmu/Misc.h>
+#include <X11/Xaw/XawInit.h>
+#include <X11/Xaw/MultiSrcP.h>
+#include <X11/Xaw/XawImP.h>
+#include "XawI18n.h"
+#include "Private.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#define MAGIC_VALUE ((XawTextPosition)-1)
+#define streq(a, b) (strcmp((a), (b)) == 0)
+
+#ifdef X_NOT_POSIX
+#define Off_t long
+#define Size_t unsigned int
+#else
+#define Off_t off_t
+#define Size_t size_t
+#endif
+
+
+/*
+ * Class Methods
+ */
+static XawTextPosition ReadText(Widget, XawTextPosition, XawTextBlock*, int);
+static int ReplaceText(Widget, XawTextPosition, XawTextPosition,
+ XawTextBlock*);
+static XawTextPosition Scan(Widget, XawTextPosition, XawTextScanType,
+ XawTextScanDirection, int, Bool);
+static XawTextPosition Search(Widget, XawTextPosition, XawTextScanDirection,
+ XawTextBlock*);
+static void XawMultiSrcClassInitialize(void);
+static void XawMultiSrcDestroy(Widget);
+static void XawMultiSrcInitialize(Widget, Widget, ArgList, Cardinal*);
+static Boolean XawMultiSrcSetValues(Widget, Widget, Widget,
+ ArgList, Cardinal*);
+static void XawMultiSrcGetValuesHook(Widget, ArgList, Cardinal*);
+
+/*
+ * Prototypes
+ */
+static MultiPiece *AllocNewPiece(MultiSrcObject, MultiPiece*);
+static void BreakPiece(MultiSrcObject, MultiPiece*);
+static Boolean CvtMultiTypeToString(Display*, XrmValuePtr, Cardinal*,
+ XrmValuePtr, XrmValuePtr, XtPointer*);
+static void CvtStringToMultiType(XrmValuePtr, Cardinal*,
+ XrmValuePtr, XrmValuePtr);
+static MultiPiece *FindPiece(MultiSrcObject, XawTextPosition,
+ XawTextPosition*);
+static void FreeAllPieces(MultiSrcObject);
+static FILE *InitStringOrFile(MultiSrcObject, Bool);
+static void LoadPieces(MultiSrcObject, FILE*, char*);
+static void RemovePiece(MultiSrcObject, MultiPiece*);
+static void RemoveOldStringOrFile(MultiSrcObject, Bool);
+static String StorePiecesInString(MultiSrcObject);
+static Bool WriteToFile(String, String);
+static void GetDefaultPieceSize(Widget, int, XrmValue*);
+
+/*
+ * Initialization
+ */
+#define offset(field) XtOffsetOf(MultiSrcRec, multi_src.field)
+static XtResource resources[] = {
+ {
+ XtNstring,
+ XtCString,
+ XtRString,
+ sizeof(XtPointer),
+ offset(string),
+ XtRPointer,
+ NULL
+ },
+ {
+ XtNtype,
+ XtCType,
+ XtRMultiType,
+ sizeof(XawAsciiType),
+ offset(type),
+ XtRImmediate,
+ (XtPointer)XawAsciiString
+ },
+ {
+ XtNdataCompression,
+ XtCDataCompression,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(data_compression),
+ XtRImmediate,
+ (XtPointer)False
+ },
+ {
+ XtNpieceSize,
+ XtCPieceSize,
+ XtRInt,
+ sizeof(XawTextPosition),
+ offset(piece_size),
+ XtRCallProc,
+ (XtPointer)GetDefaultPieceSize
+ },
+#ifdef OLDXAW
+ {
+ XtNcallback,
+ XtCCallback,
+ XtRCallback,
+ sizeof(XtPointer),
+ offset(callback),
+ XtRCallback,
+ (XtPointer)NULL
+ },
+#endif
+ {
+ XtNuseStringInPlace,
+ XtCUseStringInPlace,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(use_string_in_place),
+ XtRImmediate,
+ (XtPointer)False
+ },
+ {
+ XtNlength,
+ XtCLength,
+ XtRInt,
+ sizeof(int),
+ offset(multi_length),
+ XtRImmediate,
+ (XtPointer)MAGIC_VALUE
+ },
+};
+#undef offset
+
+#define superclass (&textSrcClassRec)
+MultiSrcClassRec multiSrcClassRec = {
+ /* object */
+ {
+ (WidgetClass)superclass, /* superclass */
+ "MultiSrc", /* class_name */
+ sizeof(MultiSrcRec), /* widget_size */
+ XawMultiSrcClassInitialize, /* class_initialize */
+ NULL, /* class_part_initialize */
+ False, /* class_inited */
+ XawMultiSrcInitialize, /* initialize */
+ NULL, /* initialize_hook */
+ NULL, /* obj1 */
+ NULL, /* obj2 */
+ 0, /* obj3 */
+ resources, /* resources */
+ XtNumber(resources), /* num_resources */
+ NULLQUARK, /* xrm_class */
+ False, /* obj4 */
+ False, /* obj5 */
+ False, /* obj6 */
+ False, /* obj7 */
+ XawMultiSrcDestroy, /* destroy */
+ NULL, /* obj8 */
+ NULL, /* obj9 */
+ XawMultiSrcSetValues, /* set_values */
+ NULL, /* set_values_hook */
+ NULL, /* obj10 */
+ XawMultiSrcGetValuesHook, /* get_values_hook */
+ NULL, /* obj11 */
+ XtVersion, /* version */
+ NULL, /* callback_private */
+ NULL, /* obj12 */
+ NULL, /* obj13 */
+ NULL, /* obj14 */
+ NULL, /* extension */
+ },
+ /* text_src */
+ {
+ ReadText, /* Read */
+ ReplaceText, /* Replace */
+ Scan, /* Scan */
+ Search, /* Search */
+ XtInheritSetSelection, /* SetSelection */
+ XtInheritConvertSelection, /* ConvertSelection */
+ },
+ /* multi_src */
+ {
+ NULL, /* extension */
+ },
+};
+
+WidgetClass multiSrcObjectClass = (WidgetClass)&multiSrcClassRec;
+
+static XrmQuark Qstring, Qfile;
+
+/*
+ * Implementation
+ */
+static void
+XawMultiSrcClassInitialize(void)
+{
+ XawInitializeWidgetSet();
+ Qstring = XrmPermStringToQuark(XtEstring);
+ Qfile = XrmPermStringToQuark(XtEfile);
+ XtAddConverter(XtRString, XtRMultiType, CvtStringToMultiType, NULL, 0);
+ XtSetTypeConverter(XtRMultiType, XtRString, CvtMultiTypeToString, NULL, 0,
+ XtCacheNone, NULL);
+}
+
+/*
+ * Function:
+ * XawMultiSrcInitialize
+ *
+ * Parameters:
+ * request - widget requested by the argument list
+ * cnew - the new widget with both resource and non resource values
+ * args - (unused)
+ * num_args - (unused)
+ *
+ * Description:
+ * Initializes the multi src object
+ */
+/*ARGSUSED*/
+static void
+XawMultiSrcInitialize(Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ MultiSrcObject src = (MultiSrcObject)cnew;
+ FILE *file;
+
+ /*
+ * Set correct flags (override resources) depending upon widget class
+ */
+#ifdef OLDXAW
+ src->multi_src.changes = False;
+#else
+ src->text_src.changed = False;
+#endif
+ src->multi_src.allocated_string = False;
+
+ if (src->multi_src.use_string_in_place && src->multi_src.string == NULL)
+ src->multi_src.use_string_in_place = False;
+
+ file = InitStringOrFile(src, src->multi_src.type == XawAsciiFile);
+ LoadPieces(src, file, NULL);
+
+ if (file != NULL)
+ fclose(file);
+ src->text_src.text_format = XawFmtWide;
+}
+
+/*
+ * Function:
+ * ReadText
+ *
+ * Parameters:
+ * w - MultiSource object
+ * pos - position of the text to retrieve
+ * text - text block that will contain returned text
+ * length - maximum number of characters to read
+ *
+ * Description:
+ * This function reads the source.
+ *
+ * Returns:
+ * The character position following the retrieved text.
+ */
+static XawTextPosition
+ReadText(Widget w, XawTextPosition pos, XawTextBlock *text, int length)
+{
+ MultiSrcObject src = (MultiSrcObject)w;
+ XawTextPosition count, start;
+ MultiPiece *piece = FindPiece(src, pos, &start);
+
+ text->format = XawFmtWide;
+ text->firstPos = pos;
+ text->ptr = (char *)(piece->text + (pos - start));
+ count = piece->used - (pos - start);
+ text->length = Max(0, (length > count) ? count : length);
+
+ return (pos + text->length);
+}
+
+/*
+ * Function:
+ * ReplaceText
+ *
+ * Parameters:
+ * w - MultiSource object
+ * startPos - ends of text that will be removed
+ * endPos - ""
+ * text - new text to be inserted into buffer at startPos
+ *
+ * Description:
+ * Replaces a block of text with new text.
+ *
+ * Returns:
+ * XawEditDone on success, XawEditError otherwise
+ */
+/*ARGSUSED*/
+static int
+ReplaceText(Widget w, XawTextPosition startPos, XawTextPosition endPos,
+ XawTextBlock *u_text_p)
+{
+ MultiSrcObject src = (MultiSrcObject)w;
+ MultiPiece *start_piece, *end_piece, *temp_piece;
+ XawTextPosition start_first, end_first;
+ int length, firstPos;
+ wchar_t *wptr;
+ Bool local_artificial_block = False;
+ XawTextBlock text;
+
+ /* STEP 1: The user handed me a text block called `u_text' that may be
+ * in either FMTWIDE or FMT8BIT (ie MB.) Later code needs the block
+ * `text' to hold FMTWIDE. So, this copies `u_text' to `text', and if
+ * `u_text' was MB, I knock it up to WIDE
+ */
+ if (u_text_p->length == 0) /* if so, the block contents never ref'd */
+ text.length = 0;
+
+ else if (u_text_p->format == XawFmtWide) {
+ local_artificial_block = False; /* don't have to free it ourselves */
+ text.firstPos = u_text_p->firstPos;
+ text.length = u_text_p->length;
+ text.ptr = u_text_p->ptr;
+ }
+ else {
+ /*
+ * WARNING! u_text->firstPos and length are in units of CHAR,
+ * not CHARACTERS!
+ */
+ local_artificial_block = True; /* have to free it ourselves */
+ text.firstPos = 0;
+ text.length = u_text_p->length; /* _XawTextMBToWC converts this
+ * to wchar len
+ */
+
+ text.ptr = (char*)_XawTextMBToWC(XtDisplay(XtParent(w)),
+ &u_text_p->ptr[u_text_p->firstPos],
+ &text.length);
+
+ /* I assert the following assignment is not needed - since Step 4
+ depends on length, it has no need of a terminating NULL. I think
+ the ASCII-version has the same needless NULL. */
+ /*((wchar_t*)text.ptr)[ text.length ] = NULL;*/
+ }
+
+ /* STEP 2: some initialization... */
+ if (src->text_src.edit_mode == XawtextRead)
+ return (XawEditError);
+
+ start_piece = FindPiece(src, startPos, &start_first);
+ end_piece = FindPiece(src, endPos, &end_first);
+
+ /* STEP 3: remove the empty pieces... */
+ if (start_piece != end_piece) {
+ temp_piece = start_piece->next;
+
+ /* If empty and not the only piece then remove it */
+ if (((start_piece->used = startPos - start_first) == 0)
+ && !(start_piece->next == NULL && start_piece->prev == NULL))
+ RemovePiece(src, start_piece);
+
+ while (temp_piece != end_piece) {
+ temp_piece = temp_piece->next;
+ RemovePiece(src, temp_piece->prev);
+ }
+ end_piece->used -= endPos - end_first;
+ if (end_piece->used != 0)
+ memmove(end_piece->text, end_piece->text + endPos - end_first,
+ end_piece->used * sizeof(wchar_t));
+ }
+ else { /* We are fully in one piece */
+ if ((start_piece->used -= endPos - startPos) == 0) {
+ if (!(start_piece->next == NULL && start_piece->prev == NULL))
+ RemovePiece(src, start_piece);
+ }
+ else {
+ memmove(start_piece->text + (startPos - start_first),
+ start_piece->text + (endPos - start_first),
+ (start_piece->used - (startPos - start_first)) *
+ sizeof(wchar_t));
+ if (src->multi_src.use_string_in_place &&
+ ((src->multi_src.length - (endPos - startPos))
+ < src->multi_src.piece_size - 1))
+ start_piece->text[src->multi_src.length - (endPos - startPos)] =
+ (wchar_t)0;
+ }
+ }
+
+ src->multi_src.length += text.length -(endPos - startPos);
+
+ /* STEP 4: insert the new stuff */
+ if ( text.length != 0) {
+ start_piece = FindPiece(src, startPos, &start_first);
+ length = text.length;
+ firstPos = text.firstPos;
+
+ while (length > 0) {
+ wchar_t *ptr;
+ int fill;
+
+ if (src->multi_src.use_string_in_place) {
+ if (start_piece->used == src->multi_src.piece_size - 1) {
+
+ /*
+ * The string is used in place, then the string
+ * is not allowed to grow
+ */
+ start_piece->used = src->multi_src.length =
+ src->multi_src.piece_size - 1;
+
+ start_piece->text[src->multi_src.length] = (wchar_t)0;
+ return (XawEditError);
+ }
+ }
+
+ if (start_piece->used == src->multi_src.piece_size) {
+ BreakPiece(src, start_piece);
+ start_piece = FindPiece(src, startPos, &start_first);
+ }
+
+ fill = Min((int)(src->multi_src.piece_size - start_piece->used), length);
+
+ ptr = start_piece->text + (startPos - start_first);
+ memmove(ptr + fill, ptr, (start_piece->used -
+ (startPos - start_first)) * sizeof(wchar_t));
+ wptr =(wchar_t *)text.ptr;
+ (void)wcsncpy(ptr, wptr + firstPos, fill);
+
+ startPos += fill;
+ firstPos += fill;
+ start_piece->used += fill;
+ length -= fill;
+ }
+ }
+
+ if (local_artificial_block == True)
+ /* In other words, text is not the u_text that the user handed me but
+ one I made myself. I only care, because I need to free the string */
+ XtFree(text.ptr);
+
+ if (src->multi_src.use_string_in_place)
+ start_piece->text[start_piece->used] = (wchar_t)0;
+
+#ifdef OLDXAW
+ src->multi_src.changes = True;
+ XtCallCallbacks(w, XtNcallback, NULL);
+#endif
+
+ return (XawEditDone);
+}
+
+/*
+ * Function:
+ * Scan
+ *
+ * Parameters:
+ * w - MultiSource widget
+ * position - position to start scanning
+ * type - type of thing to scan for
+ * dir - direction to scan
+ * count - which occurance if this thing to search for
+ * include - whether or not to include the character found in
+ * the position that is returned
+ *
+ * Description:
+ * Scans the text source for the number and type of item specified.
+ *
+ * Returns:
+ * The position of the item found
+ *
+ * Note:
+ * While there are only 'n' characters in the file there are n+1
+ * possible cursor positions (one before the first character and
+ * one after the last character
+ */
+static XawTextPosition
+Scan(Widget w, register XawTextPosition position, XawTextScanType type,
+ XawTextScanDirection dir, int count, Bool include)
+{
+ MultiSrcObject src = (MultiSrcObject)w;
+ register char inc;
+ MultiPiece *piece;
+ XawTextPosition first, first_eol_position = position;
+ register wchar_t *ptr;
+ int cnt = count;
+
+ if (type == XawstAll) {
+ if (dir == XawsdRight)
+ return (src->multi_src.length);
+ return (0);
+ }
+
+ /* STEP 1: basic sanity checks */
+ if (position > src->multi_src.length)
+ position = src->multi_src.length;
+
+ if (dir == XawsdRight) {
+ if (position == src->multi_src.length)
+ return (src->multi_src.length);
+ inc = 1;
+ }
+ else {
+ if (position == 0)
+ return (0);
+ inc = -1;
+ position--;
+ }
+
+ piece = FindPiece(src, position, &first);
+
+ if (piece->used == 0)
+ return (0);
+
+ ptr = (position - first) + piece->text;
+
+ switch (type) {
+ case XawstEOL:
+ case XawstParagraph:
+ case XawstWhiteSpace:
+ case XawstAlphaNumeric:
+ for (; cnt > 0 ; cnt--) {
+ Bool non_space = False, first_eol = True;
+
+ /*CONSTCOND*/
+ while (True) {
+ register wchar_t c;
+
+ if (ptr < piece->text) {
+ piece = piece->prev;
+ if (piece == NULL) /* Begining of text */
+ return (0);
+ ptr = piece->text + piece->used - 1;
+ c = *ptr;
+ }
+ else if (ptr >= piece->text + piece->used) {
+ piece = piece->next;
+ if (piece == NULL) /* End of text */
+ return (src->multi_src.length);
+ ptr = piece->text;
+ }
+
+ c = *ptr;
+ ptr += inc;
+ position += inc;
+
+ if (type == XawstAlphaNumeric) {
+ if (!iswalnum(c)) {
+ if (non_space)
+ break;
+ }
+ else
+ non_space = True;
+ }
+ else if (type == XawstWhiteSpace) {
+ if (iswspace(c)) {
+ if (non_space)
+ break;
+ }
+ else
+ non_space = True;
+ }
+ else if (type == XawstEOL) {
+ if (c == _Xaw_atowc(XawLF))
+ break;
+ }
+ else { /* XawstParagraph */
+ if (first_eol) {
+ if (c == _Xaw_atowc(XawLF)) {
+ first_eol_position = position;
+ first_eol = False;
+ }
+ }
+ else
+ if (c == _Xaw_atowc(XawLF))
+ break;
+ else if (!iswspace(c))
+ first_eol = True;
+ }
+ }
+ }
+ if (!include) {
+ if (type == XawstParagraph)
+ position = first_eol_position;
+ if (count)
+ position -= inc;
+ }
+ break;
+ case XawstPositions:
+ position += count * inc;
+ break;
+ default:
+ break;
+ }
+
+ if (dir == XawsdLeft)
+ position++;
+
+ if (position >= src->multi_src.length)
+ return (src->multi_src.length);
+ if (position < 0)
+ return (0);
+
+ return (position);
+}
+
+/*
+ * Function:
+ * Search
+ *
+ * Parameters:
+ * w - MultiSource objecy
+ * position - position to start scanning
+ * dir - direction to scan
+ * text - text block to search for
+ *
+ * Description:
+ * Searchs the text source for the text block passed.
+ *
+ * Returns:
+ * The position of the item found
+ */
+static XawTextPosition
+Search(Widget w, register XawTextPosition position, XawTextScanDirection dir,
+ XawTextBlock *text)
+{
+ MultiSrcObject src = (MultiSrcObject)w;
+ register int count = 0;
+ wchar_t *ptr;
+ wchar_t *wtarget;
+ int wtarget_len;
+ Display *d = XtDisplay(XtParent(w));
+ MultiPiece *piece;
+ wchar_t *buf;
+ XawTextPosition first;
+ register char inc;
+ int cnt;
+
+ /* STEP 1: First, a brief sanity check */
+ if (dir == XawsdRight)
+ inc = 1;
+ else {
+ inc = -1;
+ if (position == 0)
+ return (XawTextSearchError);
+ position--;
+ }
+
+ /* STEP 2: Ensure I have a local wide string.. */
+
+ /* Since this widget stores 32bit chars, I check here to see if
+ I'm being passed a string claiming to be 8bit chars (ie, MB text.)
+ If that is the case, naturally I convert to 32bit format */
+
+ /*if the block was FMT8BIT, length will convert to REAL wchar count bellow */
+ wtarget_len = text->length;
+
+ if (text->format == XawFmtWide)
+ wtarget = &(((wchar_t*)text->ptr) [text->firstPos]);
+ else {
+ /* The following converts wtarget_len from byte len to wchar count */
+ wtarget = _XawTextMBToWC(d, &text->ptr[text->firstPos], &wtarget_len);
+ }
+
+ /* OK, I can now assert that wtarget holds wide characters, wtarget_len
+ holds an accurate count of those characters, and that firstPos has been
+ effectively factored out of the following computations */
+
+ /* STEP 3: SEARCH! */
+ buf = (wchar_t *)XtMalloc(sizeof(wchar_t) * wtarget_len);
+ (void)wcsncpy(buf, wtarget, wtarget_len);
+ piece = FindPiece(src, position, &first);
+ ptr = (position - first) + piece->text;
+
+ /*CONSTCOND*/
+ while (True) {
+ if (*ptr == (dir == XawsdRight ? *(buf + count)
+ : *(buf + wtarget_len - count - 1))) {
+ if (count == text->length - 1)
+ break;
+ else
+ count++;
+ }
+ else {
+ if (count != 0) {
+ position -=inc * count;
+ ptr -= inc * count;
+ }
+ count = 0;
+ }
+
+ ptr += inc;
+ position += inc;
+
+ while (ptr < piece->text) {
+ cnt = piece->text - ptr;
+
+ piece = piece->prev;
+ if (piece == NULL) { /* Begining of text */
+ XtFree((char *)buf);
+ return (XawTextSearchError);
+ }
+ ptr = piece->text + piece->used - cnt;
+ }
+
+ while (ptr >= piece->text + piece->used) {
+ cnt = ptr - (piece->text + piece->used);
+
+ piece = piece->next;
+ if (piece == NULL) { /* End of text */
+ XtFree((char *)buf);
+ return (XawTextSearchError);
+ }
+ ptr = piece->text + cnt;
+ }
+ }
+
+ XtFree((char *)buf);
+ if (dir == XawsdLeft)
+ return(position);
+
+ return(position - (wtarget_len - 1));
+}
+
+/*
+ * Function:
+ * XawMultiSrcSetValues
+ *
+ * Parameters:
+ * current - current state of the widget
+ * request - what was requested
+ * cnew - what the widget will become
+ * args - representation of resources that have changed
+ * num_args - number of changed resources
+ *
+ * Description:
+ * Sets the values for the MultiSource.
+ *
+ * Returns:
+ * True if redisplay is needed
+ */
+static Boolean
+XawMultiSrcSetValues(Widget current, Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ MultiSrcObject src = (MultiSrcObject)cnew;
+ MultiSrcObject old_src = (MultiSrcObject)current;
+ XtAppContext app_con = XtWidgetToApplicationContext(cnew);
+ Bool total_reset = False, string_set = False;
+ FILE *file;
+ unsigned int i;
+
+ if (old_src->multi_src.use_string_in_place
+ != src->multi_src.use_string_in_place) {
+ XtAppWarning(app_con,
+ "MultiSrc: The XtNuseStringInPlace resources "
+ "may not be changed.");
+ src->multi_src.use_string_in_place =
+ old_src->multi_src.use_string_in_place;
+ }
+
+ for (i = 0; i < *num_args ; i++)
+ if (streq(args[i].name, XtNstring)) {
+ string_set = True;
+ break;
+ }
+
+ if (string_set || old_src->multi_src.type != src->multi_src.type) {
+ RemoveOldStringOrFile(old_src, string_set);
+ src->multi_src.allocated_string = old_src->multi_src.allocated_string;
+ file = InitStringOrFile(src, string_set);
+
+ LoadPieces(src, file, NULL);
+ if (file != NULL)
+ fclose(file);
+#ifndef OLDXAW
+ for (i = 0; i < src->text_src.num_text; i++)
+ /* Tell text widget what happened */
+ XawTextSetSource(src->text_src.text[i], cnew, 0);
+#else
+ XawTextSetSource(XtParent(cnew), cnew, 0);
+#endif
+ total_reset = True;
+ }
+
+ if (old_src->multi_src.multi_length != src->multi_src.multi_length)
+ src->multi_src.piece_size = src->multi_src.multi_length + 1;
+
+ if ( !total_reset && old_src->multi_src.piece_size
+ != src->multi_src.piece_size) {
+ String mb_string = StorePiecesInString(old_src);
+
+ if (mb_string != 0) {
+ FreeAllPieces(old_src);
+ LoadPieces(src, NULL, mb_string);
+ XtFree(mb_string);
+ }
+ else {
+ /* If the buffer holds bad chars, don't touch it... */
+ XtAppWarningMsg(app_con,
+ "convertError", "multiSource", "XawError",
+ XtName(XtParent((Widget)old_src)), NULL, NULL);
+ XtAppWarningMsg(app_con,
+ "convertError", "multiSource", "XawError",
+ "Non-character code(s) in buffer.", NULL, NULL);
+ }
+ }
+
+ return (False);
+}
+
+static void
+XawMultiSrcGetValuesHook(Widget w, ArgList args, Cardinal *num_args)
+{
+ MultiSrcObject src = (MultiSrcObject)w;
+ unsigned int i;
+
+ if (src->multi_src.type == XawAsciiString) {
+ for (i = 0; i < *num_args ; i++) {
+ if (streq(args[i].name, XtNstring)) {
+ if (src->multi_src.use_string_in_place)
+ *((char **)args[i].value) = (char *)
+ src->multi_src.first_piece->text;
+ else if (_XawMultiSave(w)) /* If save sucessful */
+ *((char **)args[i].value) = (char *)src->multi_src.string;
+ break;
+ }
+ }
+ }
+}
+
+static void
+XawMultiSrcDestroy(Widget w)
+{
+ RemoveOldStringOrFile((MultiSrcObject) w, True);
+}
+
+/*
+ * Public routines
+ */
+/*
+ * Function:
+ * XawMultiSourceFreeString
+ *
+ * Parameters:
+ * w - MultiSrc widget
+ *
+ * Description:
+ * Frees the string returned by a get values call
+ * on the string when the source is of type string.
+ *
+ * Note:
+ * The public interface is XawAsciiSourceFreeString!
+ */
+void
+_XawMultiSourceFreeString(Widget w)
+{
+ MultiSrcObject src = (MultiSrcObject)w;
+
+ if (src->multi_src.allocated_string) {
+ XtFree((char *)src->multi_src.string);
+ src->multi_src.allocated_string = False;
+ src->multi_src.string = NULL;
+ }
+}
+
+/*
+ * Function:
+ * _XawMultiSave
+ *
+ * Parameters:
+ * w - multiSrc Widget
+ *
+ * Description:
+ * Saves all the pieces into a file or string as required.
+ *
+ * Returns:
+ * True if the save was successful
+ *
+ * Note:
+ * The public interface is XawAsciiSave(w)!
+ */
+Bool
+_XawMultiSave(Widget w)
+{
+ MultiSrcObject src = (MultiSrcObject)w;
+ XtAppContext app_con = XtWidgetToApplicationContext(w);
+ char *mb_string;
+
+ /*
+ * If using the string in place then there is no need to play games
+ * to get the internal info into a readable string
+ */
+ if (src->multi_src.use_string_in_place)
+ return (True);
+
+ if (src->multi_src.type == XawAsciiFile) {
+#ifdef OLDXAW
+ if (!src->multi_src.changes)
+#else
+ if (!src->text_src.changed) /* No changes to save */
+#endif
+ return (True);
+
+ mb_string = StorePiecesInString(src);
+
+ if (mb_string != 0) {
+ if (WriteToFile(mb_string, (String)src->multi_src.string) == False) {
+ XtFree(mb_string);
+ return (False);
+ }
+ XtFree(mb_string);
+#ifndef OLDXAW
+ src->text_src.changed = False;
+#else
+ src->multi_src.changes = False;
+#endif
+ return (True);
+ }
+ else {
+ /* If the buffer holds bad chars, don't touch it... */
+ XtAppWarningMsg(app_con,
+ "convertError", "multiSource", "XawError",
+ "Due to illegal characters, file not saved.",
+ NULL, NULL);
+ return (False);
+ }
+ }
+ else {
+ /* THIS FUNCTIONALITY IS UNDOCUMENTED, probably UNNEEDED? The manual
+ says this routine's only function is to save files to
+ disk. -Sheeran */
+ mb_string = StorePiecesInString(src);
+
+ if (mb_string == 0) {
+ /* If the buffer holds bad chars, don't touch it... */
+ XtAppWarningMsg(app_con,
+ "convertError", "multiSource", "XawError",
+ XtName(XtParent((Widget)src)), NULL, NULL);
+ return (False);
+ }
+
+ /* assert: mb_string holds good characters so the buffer is fine */
+ if (src->multi_src.allocated_string == True)
+ XtFree((char *)src->multi_src.string);
+ else
+ src->multi_src.allocated_string = True;
+
+ src->multi_src.string = mb_string;
+ }
+#ifdef OLDXAW
+ src->multi_src.changes = False;
+#else
+ src->text_src.changed = False;
+#endif
+
+ return (True);
+}
+
+/*
+ * Function:
+ * XawMultiSaveAsFile
+ *
+ * Parameters:
+ * w - MultiSrc widget
+ * name - name of the file to save this file into
+ *
+ * Description:
+ * Save the current buffer as a file.
+ *
+ * Returns:
+ * True if the save was sucessful
+ *
+ * Note:
+ * The public interface is XawAsciiSaveAsFile!
+ */
+Bool
+_XawMultiSaveAsFile(Widget w, _Xconst char* name)
+{
+ MultiSrcObject src = (MultiSrcObject)w;
+ String mb_string;
+ Bool ret;
+
+ mb_string = StorePiecesInString(src);
+
+ if (mb_string != 0) {
+ ret = WriteToFile(mb_string, (char *)name);
+ XtFree(mb_string);
+
+ return (ret);
+ }
+
+ /* otherwise there was a conversion error. So print widget name too */
+ XtAppWarningMsg(XtWidgetToApplicationContext(w),
+ "convertError", "multiSource", "XawError",
+ XtName(XtParent(w)), NULL, NULL);
+
+ return (False);
+}
+
+/*
+ * Private Functions
+ */
+static void
+RemoveOldStringOrFile(MultiSrcObject src, Bool checkString)
+{
+ FreeAllPieces(src);
+
+ if (checkString && src->multi_src.allocated_string) {
+ XtFree((char *)src->multi_src.string);
+ src->multi_src.allocated_string = False;
+ src->multi_src.string = NULL;
+ }
+}
+
+/*
+ * Function:
+ * WriteToFile
+ *
+ * Parameters:
+ * string - string to write
+ * name - name of the file
+ *
+ * Description:
+ * Write the string specified to the begining of the file specified.
+ *
+ * Returns:
+ * Returns True if sucessful, False otherwise
+ */
+static Bool
+WriteToFile(String string, String name)
+{
+ int fd;
+
+ if (((fd = creat(name, 0666)) == -1)
+ || (write(fd, string, strlen(string)) == -1))
+ return (False);
+
+ if (close(fd) == -1)
+ return (False);
+
+ return (True);
+}
+
+
+/*
+ * Function:
+ * StorePiecesInString
+ *
+ * Parameters:
+ * src - the multiSrc object to gather data from
+ *
+ * Description:
+ * Store the pieces in memory into a char string.
+ *
+ * Returns:
+ * mb_string: Caller must free
+ * (or)
+ * NULL: conversion error
+ */
+static String
+StorePiecesInString(MultiSrcObject src)
+{
+ wchar_t *wc_string;
+ char *mb_string;
+ int char_count = src->multi_src.length;
+ XawTextPosition first;
+ MultiPiece *piece;
+
+ /* I believe the char_count + 1 and the NULL termination are unneeded! FS */
+ wc_string = (wchar_t*)XtMalloc((char_count + 1) * sizeof(wchar_t));
+
+ for (first = 0, piece = src->multi_src.first_piece ; piece != NULL;
+ first += piece->used, piece = piece->next)
+ (void)wcsncpy(wc_string + first, piece->text, piece->used);
+
+ wc_string[char_count] = 0;
+
+ /* This will refill all pieces to capacity */
+ if (src->multi_src.data_compression) {
+ FreeAllPieces(src);
+ LoadPieces(src, NULL, (char *)wc_string);
+ }
+
+ /* Lastly, convert it to a MB format and send it back */
+ mb_string = _XawTextWCToMB(XtDisplayOfObject((Widget)src),
+ wc_string, &char_count);
+
+ /* NOTE THAT mb_string MAY BE ZERO IF THE CONVERSION FAILED */
+ XtFree((char*)wc_string);
+
+ return (mb_string);
+}
+
+/*
+ * Function:
+ * InitStringOrFile
+ *
+ * Parameters:
+ * src - MultiSource
+ *
+ * Description:
+ * Initializes the string or file.
+ */
+static FILE *
+InitStringOrFile(MultiSrcObject src, Bool newString)
+{
+ mode_t open_mode = 0;
+ const char *fdopen_mode = NULL;
+ int fd;
+ FILE *file;
+ Display *d = XtDisplayOfObject((Widget)src);
+
+ if (src->multi_src.type == XawAsciiString) {
+ if (src->multi_src.string == NULL)
+ src->multi_src.length = 0;
+
+ else if (!src->multi_src.use_string_in_place) {
+ int length;
+ String temp = XtNewString((char *)src->multi_src.string);
+
+ if (src->multi_src.allocated_string)
+ XtFree((char *)src->multi_src.string);
+ src->multi_src.allocated_string = True;
+ src->multi_src.string = temp;
+
+ length = strlen((char *)src->multi_src.string);
+
+ /* Wasteful, throwing away the WC string, but need side effect! */
+ (void)_XawTextMBToWC(d, (char *)src->multi_src.string, &length);
+ src->multi_src.length = (XawTextPosition)length;
+ }
+ else {
+ src->multi_src.length = strlen((char *)src->multi_src.string);
+ /* In case the length resource is incorrectly set */
+ if (src->multi_src.length > src->multi_src.multi_length)
+ src->multi_src.multi_length = src->multi_src.length;
+
+ if (src->multi_src.multi_length == MAGIC_VALUE)
+ src->multi_src.piece_size = src->multi_src.length;
+ else
+ src->multi_src.piece_size = src->multi_src.multi_length + 1;
+ }
+
+ return (NULL);
+ }
+
+ /*
+ * type is XawAsciiFile
+ */
+ src->multi_src.is_tempfile = False;
+
+ switch (src->text_src.edit_mode) {
+ case XawtextRead:
+ if (src->multi_src.string == NULL)
+ XtErrorMsg("NoFile", "multiSourceCreate", "XawError",
+ "Creating a read only disk widget and no file specified.",
+ NULL, 0);
+ open_mode = O_RDONLY;
+ fdopen_mode = "r";
+ break;
+ case XawtextAppend:
+ case XawtextEdit:
+ if (src->multi_src.string == NULL) {
+ src->multi_src.string = "*multi-src*";
+ src->multi_src.is_tempfile = True;
+ }
+ else {
+/* O_NOFOLLOW is a BSD & Linux extension */
+#ifdef O_NOFOLLOW
+ open_mode = O_RDWR | O_NOFOLLOW;
+#else
+ open_mode = O_RDWR; /* unsafe; subject to race conditions */
+#endif
+ fdopen_mode = "r+";
+ }
+ break;
+ default:
+ XtErrorMsg("badMode", "multiSourceCreate", "XawError",
+ "Bad editMode for multi source; must be "
+ "Read, Append or Edit.", NULL, NULL);
+ }
+
+ /* If is_tempfile, allocate a private copy of the text
+ * Unlikely to be changed, just to set allocated_string */
+ if (newString || src->multi_src.is_tempfile) {
+ String temp = XtNewString((char *)src->multi_src.string);
+
+ if (src->multi_src.allocated_string)
+ XtFree((char *)src->multi_src.string);
+ src->multi_src.string = temp;
+ src->multi_src.allocated_string = True;
+ }
+
+ if (!src->multi_src.is_tempfile) {
+ if ((fd = open((char *)src->multi_src.string, open_mode, 0666)) != -1) {
+ if ((file = fdopen(fd, fdopen_mode)) != NULL) {
+ (void)fseek(file, 0, SEEK_END);
+ src->multi_src.length = (XawTextPosition)ftell(file);
+ return(file);
+ }
+ }
+ {
+ String params[2];
+ Cardinal num_params = 2;
+
+ params[0] = (String)src->multi_src.string;
+ params[1] = strerror(errno);
+ XtAppWarningMsg(XtWidgetToApplicationContext((Widget)src),
+ "openError", "multiSourceCreate", "XawWarning",
+ "Cannot open file %s; %s", params, &num_params);
+ }
+ }
+ src->multi_src.length = 0;
+ return (NULL);
+}
+
+/* LoadPieces: This routine takes either the MB contents of open file
+ `file' or the MB contents of string or the MB contents of
+ src->multi_src.string and places them in Pieces in WC format.
+
+ CAUTION: You must have src->multi_src.length set to file length bytes
+ when src->multi_src.type == XawAsciiFile. src->multi_src.length must be
+ the length of the parameter string if string is non-NULL
+*/
+static void
+LoadPieces(MultiSrcObject src, FILE *file, char *string)
+{
+ Display *d = XtDisplayOfObject((Widget)src);
+ wchar_t* local_str, *ptr;
+ MultiPiece* piece = NULL;
+ XawTextPosition left;
+ int bytes = sizeof(wchar_t);
+ char* temp_mb_holder = NULL;
+
+ /*
+ * This is tricky - the _XawTextMBtoWC converter uses its 3rd arg
+ * in as MB length, out as WC length. We want local_length to be
+ * WC count.
+ */
+ int local_length = src->multi_src.length;
+
+ if (string != NULL) {
+ /*
+ * ASSERT: IF our caller passed a non-null string, THEN
+ * src->multi_src.length is currently string's * byte count,
+ * AND string is in a MB format
+ */
+ local_str = _XawTextMBToWC(d, (char *)string, &local_length);
+ src->multi_src.length = (XawTextPosition) local_length;
+ }
+ else if (src->multi_src.type != XawAsciiFile) {
+ /*
+ * here, we are not changing the contents, just reloading,
+ * so don't change len...
+ */
+ local_length = src->multi_src.string ?
+ strlen((char *)src->multi_src.string) : 0;
+ local_str = _XawTextMBToWC(d, (char *)src->multi_src.string,
+ &local_length);
+ }
+ else {
+ if (src->multi_src.length != 0) {
+ temp_mb_holder =
+ XtMalloc((src->multi_src.length + 1) * sizeof(unsigned char));
+ fseek(file, 0, 0);
+ src->multi_src.length = fread(temp_mb_holder,
+ (Size_t)sizeof(unsigned char),
+ (Size_t)src->multi_src.length, file);
+ if (src->multi_src.length <= 0)
+ XtAppErrorMsg(XtWidgetToApplicationContext ((Widget) src),
+ "readError", "multiSource", "XawError",
+ "fread returned error.", NULL, NULL);
+ local_length = src->multi_src.length;
+ local_str = _XawTextMBToWC(d, temp_mb_holder, &local_length);
+ src->multi_src.length = local_length;
+
+ if (local_str == 0) {
+ String params[2];
+ Cardinal num_params;
+ static char err_text[] =
+ "<<< FILE CONTENTS NOT REPRESENTABLE IN THIS LOCALE >>>";
+
+ params[0] = XtName(XtParent((Widget)src));
+ params[1] = src->multi_src.string;
+ num_params = 2;
+
+ XtAppWarningMsg(XtWidgetToApplicationContext((Widget)src),
+ "readLocaleError", "multiSource", "XawError",
+ "%s: The file `%s' contains characters "
+ "not representable in this locale.",
+ params, &num_params);
+ src->multi_src.length = sizeof err_text;
+ local_length = src->multi_src.length;
+ local_str = _XawTextMBToWC(d, err_text, &local_length);
+ src->multi_src.length = local_length;
+ }
+ }
+ else
+ /* ASSERT that since following while loop looks at local_length
+ this isn't needed. Sheeran, Omron KK, 1993/07/15
+ temp_mb_holder[src->multi_src.length] = '\0'; */
+ local_str = (wchar_t*)temp_mb_holder;
+ }
+
+ if (src->multi_src.use_string_in_place) {
+ piece = AllocNewPiece(src, piece);
+ piece->used = Min(src->multi_src.length, src->multi_src.piece_size);
+ piece->text = (wchar_t*)src->multi_src.string;
+ return;
+ }
+
+ ptr = local_str;
+ left = local_length;
+
+ do {
+ piece = AllocNewPiece(src, piece);
+
+ piece->text = (wchar_t*)XtMalloc((unsigned)(src->multi_src.piece_size
+ * bytes));
+ piece->used = Min(left, src->multi_src.piece_size);
+ if (piece->used != 0)
+ (void)wcsncpy(piece->text, ptr, piece->used);
+
+ left -= piece->used;
+ ptr += piece->used;
+ } while (left > 0);
+
+ if (temp_mb_holder)
+ XtFree((char*)temp_mb_holder);
+}
+
+/*
+ * Function:
+ * AllocNewPiece
+ *
+ * Parameters:
+ * src - MultiSrc Widget
+ * prev - the piece just before this one, or NULL
+ *
+ * Description:
+ * Allocates a new piece of memory.
+ *
+ * Returns:
+ * The allocated piece
+ */
+static MultiPiece *
+AllocNewPiece(MultiSrcObject src, MultiPiece *prev)
+{
+ MultiPiece *piece = XtNew(MultiPiece);
+
+ if (prev == NULL) {
+ src->multi_src.first_piece = piece;
+ piece->next = NULL;
+ }
+ else {
+ if (prev->next != NULL)
+ (prev->next)->prev = piece;
+ piece->next = prev->next;
+ prev->next = piece;
+ }
+
+ piece->prev = prev;
+
+ return (piece);
+}
+
+/*
+ * Function:
+ * FreeAllPieces
+ *
+ * Parameters:
+ * src - MultiSrc Widget
+ *
+ * Description:
+ * Frees all the pieces
+ */
+static void
+FreeAllPieces(MultiSrcObject src)
+{
+ MultiPiece *next, *first = src->multi_src.first_piece;
+
+#ifdef DEBUG
+ if (first->prev != NULL)
+ printf("Xaw MultiSrc Object: possible memory leak in FreeAllPieces().\n");
+#endif
+
+ for (; first != NULL ; first = next) {
+ next = first->next;
+ RemovePiece(src, first);
+ }
+}
+
+/*
+ * Function:
+ * RemovePiece
+ *
+ * Parameters:
+ * piece - piece to remove
+ *
+ * Description:
+ * Removes a piece from the list.
+ */
+static void
+RemovePiece(MultiSrcObject src, MultiPiece *piece)
+{
+ if (piece->prev == NULL)
+ src->multi_src.first_piece = piece->next;
+ else
+ piece->prev->next = piece->next;
+
+ if (piece->next != NULL)
+ piece->next->prev = piece->prev;
+
+ if (!src->multi_src.use_string_in_place)
+ XtFree((char *)piece->text);
+
+ XtFree((char *)piece);
+}
+
+/*
+ * Function:
+ * FindPiece
+ *
+ * Parameters:
+ * src - MultiSrc Widget
+ * position - position that we are searching for
+ * first - position of the first character in this piece (return)
+ *
+ * Description:
+ * Finds the piece containing the position indicated.
+ *
+ * Returns:
+ * Piece that contains this position
+ */
+static MultiPiece *
+FindPiece(MultiSrcObject src, XawTextPosition position, XawTextPosition *first)
+{
+ MultiPiece *old_piece, *piece;
+ XawTextPosition temp;
+
+ for (old_piece = NULL, piece = src->multi_src.first_piece, temp = 0;
+ piece; old_piece = piece, piece = piece->next)
+ if ((temp += piece->used) > position) {
+ *first = temp - piece->used;
+ return (piece);
+ }
+
+ *first = temp - (old_piece ? old_piece->used : 0);
+
+ return (old_piece); /* if we run off the end the return the last piece */
+}
+
+/*
+ * Function:
+ * BreakPiece
+ *
+ * Parameters:
+ * src - MultiSrc Widget
+ * piece - piece to break
+ *
+ * Description:
+ * Breaks a full piece into two new pieces.
+ */
+#define HALF_PIECE (src->multi_src.piece_size >> 1)
+static void
+BreakPiece(MultiSrcObject src, MultiPiece *piece)
+{
+ MultiPiece *cnew = AllocNewPiece(src, piece);
+
+ cnew->text = (wchar_t *)
+ XtMalloc(src->multi_src.piece_size * sizeof(wchar_t));
+ (void)wcsncpy(cnew->text, piece->text + HALF_PIECE,
+ src->multi_src.piece_size - HALF_PIECE);
+ piece->used = HALF_PIECE;
+ cnew->used = src->multi_src.piece_size - HALF_PIECE;
+}
+
+/*ARGSUSED*/
+static void
+CvtStringToMultiType(XrmValuePtr args, Cardinal *num_args,
+ XrmValuePtr fromVal, XrmValuePtr toVal)
+{
+ static XawAsciiType type = XawAsciiString;
+ XrmQuark q;
+ char name[7];
+
+ XmuNCopyISOLatin1Lowered(name, (char *)fromVal->addr, sizeof(name));
+ q = XrmStringToQuark(name);
+
+ if (q == Qstring)
+ type = XawAsciiString;
+ if (q == Qfile)
+ type = XawAsciiFile;
+ else {
+ toVal->size = 0;
+ toVal->addr = NULL;
+ XtStringConversionWarning((char *)fromVal->addr, XtRAsciiType);
+ }
+
+ toVal->size = sizeof(XawAsciiType);
+ toVal->addr = (XPointer)&type;
+}
+
+/*ARGSUSED*/
+static Boolean
+CvtMultiTypeToString(Display *dpy, XrmValuePtr args, Cardinal *num_args,
+ XrmValuePtr fromVal, XrmValuePtr toVal,
+ XtPointer *data)
+{
+ static String buffer;
+ Cardinal size;
+
+ switch (*(XawAsciiType *)fromVal->addr) {
+ case XawAsciiFile:
+ buffer = XtEfile;
+ break;
+ case XawAsciiString:
+ buffer = XtEstring;
+ break;
+ default:
+ XawTypeToStringWarning(dpy, XtRAsciiType);
+ toVal->addr = NULL;
+ toVal->size = 0;
+ return (False);
+ }
+
+ size = strlen(buffer) + 1;
+ if (toVal->addr != NULL) {
+ if (toVal->size < size) {
+ toVal->size = size;
+ return (False);
+ }
+ strcpy((char *)toVal->addr, buffer);
+ }
+ else
+ toVal->addr = (XPointer)buffer;
+ toVal->size = sizeof(String);
+
+ return (True);
+}
+
+/*ARGSUSED*/
+static void
+GetDefaultPieceSize(Widget w, int offset, XrmValue *value)
+{
+ static XPointer pagesize;
+
+ if (pagesize == 0) {
+ pagesize = (XPointer)((long)_XawGetPageSize());
+ if (pagesize < (XPointer)BUFSIZ)
+ pagesize = (XPointer)BUFSIZ;
+ }
+
+ value->addr = (XPointer)&pagesize;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 22:55:59 +0000