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-rw-r--r--libXaw/src/AsciiSrc.c3776
1 files changed, 1888 insertions, 1888 deletions
diff --git a/libXaw/src/AsciiSrc.c b/libXaw/src/AsciiSrc.c
index 2a07e6220..245a65464 100644
--- a/libXaw/src/AsciiSrc.c
+++ b/libXaw/src/AsciiSrc.c
@@ -1,1888 +1,1888 @@
-/*
-
-Copyright 1989, 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.
-
-*/
-
-/*
- * AsciiSrc.c - AsciiSrc object. (For use with the text widget).
- *
- */
-
-#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/Xos.h>
-#include <X11/Xfuncs.h>
-#include <X11/Xmu/CharSet.h>
-#include <X11/Xmu/Misc.h>
-#include <X11/Xaw/XawInit.h>
-#include <X11/Xaw/AsciiSrcP.h>
-#include <X11/Xaw/MultiSrcP.h>
-#ifndef OLDXAW
-#include <X11/Xaw/TextSinkP.h>
-#include <X11/Xaw/AsciiSinkP.h>
-#endif
-#include "Private.h"
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-
-#if (defined(ASCII_STRING) || defined(ASCII_DISK))
-#include <X11/Xaw/AsciiText.h> /* for Widget Classes */
-#endif
-
-#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
-
-#define MAGIC_VALUE ((XawTextPosition)-1)
-#define streq(a, b) (strcmp((a), (b)) == 0)
-
-/*
- * Class Methods
- */
-static void XawAsciiSrcClassInitialize(void);
-static void XawAsciiSrcDestroy(Widget);
-static void XawAsciiSrcGetValuesHook(Widget, ArgList, Cardinal*);
-static void XawAsciiSrcInitialize(Widget, Widget, ArgList, Cardinal*);
-static Boolean XawAsciiSrcSetValues(Widget, Widget, Widget,
- ArgList, Cardinal*);
-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*);
-
-/*
- * Prototypes
- */
-static Piece *AllocNewPiece(AsciiSrcObject, Piece*);
-static void BreakPiece(AsciiSrcObject, Piece*);
-static Boolean CvtAsciiTypeToString(Display*, XrmValuePtr, Cardinal*,
- XrmValuePtr, XrmValuePtr, XtPointer*);
-static void CvtStringToAsciiType(XrmValuePtr, Cardinal*,
- XrmValuePtr, XrmValuePtr);
-static Piece *FindPiece(AsciiSrcObject, XawTextPosition, XawTextPosition*);
-static void FreeAllPieces(AsciiSrcObject);
-static FILE *InitStringOrFile(AsciiSrcObject, Bool);
-static void LoadPieces(AsciiSrcObject, FILE*, char*);
-static void RemoveOldStringOrFile(AsciiSrcObject, Bool);
-static void RemovePiece(AsciiSrcObject, Piece*);
-static String StorePiecesInString(AsciiSrcObject);
-static Bool WriteToFile(String, String, unsigned);
-static Bool WritePiecesToFile(AsciiSrcObject, String);
-static void GetDefaultPieceSize(Widget, int, XrmValue*);
-
-/*
- * More Prototypes
- */
-#ifdef ASCII_DISK
-Widget XawAsciiDiskSourceCreate(Widget, ArgList, Cardinal);
-#endif
-#ifdef ASCII_STRING
-Widget XawStringSourceCreate(Widget, ArgList, Cardinal);
-void XawTextSetLastPos(Widget, XawTextPosition);
-#endif
-
-/*
- * Initialization
- */
-#define offset(field) XtOffsetOf(AsciiSrcRec, ascii_src.field)
-static XtResource resources[] = {
- {
- XtNstring,
- XtCString,
- XtRString,
- sizeof(char*),
- offset(string),
- XtRString,
- NULL
- },
- {
- XtNtype,
- XtCType,
- XtRAsciiType,
- sizeof(XawAsciiType),
- offset(type),
- XtRImmediate,
- (XtPointer)XawAsciiString
- },
- {
- XtNdataCompression,
- XtCDataCompression,
- XtRBoolean,
- sizeof(Boolean),
- offset(data_compression),
- XtRImmediate,
- (XtPointer)True
- },
- {
- 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(ascii_length),
- XtRImmediate,
- (XtPointer)MAGIC_VALUE
- },
-#ifdef ASCII_DISK
- {
- XtNfile,
- XtCFile,
- XtRString,
- sizeof(String),
- offset(filename),
- XtRString,
- NULL
- },
-#endif /* ASCII_DISK */
-};
-#undef offset
-
-
-#define Superclass (&textSrcClassRec)
-AsciiSrcClassRec asciiSrcClassRec = {
- /* object */
- {
- (WidgetClass)Superclass, /* superclass */
- "AsciiSrc", /* class_name */
- sizeof(AsciiSrcRec), /* widget_size */
- XawAsciiSrcClassInitialize, /* class_initialize */
- NULL, /* class_part_initialize */
- False, /* class_inited */
- XawAsciiSrcInitialize, /* initialize */
- NULL, /* initialize_hook */
- NULL, /* realize */
- NULL, /* actions */
- 0, /* num_actions */
- resources, /* resources */
- XtNumber(resources), /* num_resources */
- NULLQUARK, /* xrm_class */
- False, /* compress_motion */
- False, /* compress_exposure */
- False, /* compress_enterleave */
- False, /* visible_interest */
- XawAsciiSrcDestroy, /* destroy */
- NULL, /* resize */
- NULL, /* expose */
- XawAsciiSrcSetValues, /* set_values */
- NULL, /* set_values_hook */
- NULL, /* set_values_almost */
- XawAsciiSrcGetValuesHook, /* get_values_hook */
- NULL, /* accept_focus */
- XtVersion, /* version */
- NULL, /* callback_private */
- NULL, /* tm_table */
- NULL, /* query_geometry */
- NULL, /* display_accelerator */
- NULL, /* extension */
- },
- /* text_src */
- {
- ReadText, /* Read */
- ReplaceText, /* Replace */
- Scan, /* Scan */
- Search, /* Search */
- XtInheritSetSelection, /* SetSelection */
- XtInheritConvertSelection, /* ConvertSelection */
- },
- /* ascii_src */
- {
- NULL, /* extension */
- },
-};
-
-WidgetClass asciiSrcObjectClass = (WidgetClass)&asciiSrcClassRec;
-
-static XrmQuark Qstring, Qfile;
-
-/*
- * Implementation
- */
-/*
- * Function:
- * XawAsciiSrcClassInitialize()
- *
- * Description:
- * Initializes the asciiSrcObjectClass and install the converters for
- * AsciiType <-> String.
- */
-static void
-XawAsciiSrcClassInitialize(void)
-{
- XawInitializeWidgetSet();
- Qstring = XrmPermStringToQuark(XtEstring);
- Qfile = XrmPermStringToQuark(XtEfile);
- XtAddConverter(XtRString, XtRAsciiType, CvtStringToAsciiType, NULL, 0);
- XtSetTypeConverter(XtRAsciiType, XtRString, CvtAsciiTypeToString,
- NULL, 0, XtCacheNone, NULL);
-}
-
-/*
- * Function:
- * XawAsciiSrcInitialize
- *
- * Parameters:
- * request - widget requested by the argument list
- * cnew - new widget with both resource and non resource values
- * args - (unused)
- * num_args - (unused)
- *
- * Description:
- * Initializes the ascii src object.
- */
-/*ARGSUSED*/
-static void
-XawAsciiSrcInitialize(Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- AsciiSrcObject src = (AsciiSrcObject)cnew;
- FILE *file;
-
- /*
- * Set correct flags (override resources) depending upon widget class
- */
- src->text_src.text_format = XawFmt8Bit;
-
-#ifdef ASCII_DISK
- if (XtIsSubclass(XtParent(cnew), asciiDiskWidgetClass)) {
- src->ascii_src.type = XawAsciiFile;
- src->ascii_src.string = src->ascii_src.filename;
- }
-#endif
-
-#ifdef ASCII_STRING
- if (XtIsSubclass(XtParent(cnew), asciiStringWidgetClass)) {
- src->ascii_src.use_string_in_place = True;
- src->ascii_src.type = XawAsciiString;
- }
-#endif
-
-#ifdef OLDXAW
- src->ascii_src.changes = False;
-#else
- src->text_src.changed = False;
-#endif
- src->ascii_src.allocated_string = False;
-
- if (src->ascii_src.use_string_in_place && src->ascii_src.string == NULL)
- src->ascii_src.use_string_in_place = False;
-
- file = InitStringOrFile(src, src->ascii_src.type == XawAsciiFile);
- LoadPieces(src, file, NULL);
-
- if (file != NULL)
- fclose(file);
-}
-
-/*
- * Function:
- * ReadText
- *
- * Parameters:
- * w - AsciiSource widget
- * pos - position of the text to retreive.
- * 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)
-{
- AsciiSrcObject src = (AsciiSrcObject)w;
- XawTextPosition count, start;
- Piece *piece;
-#ifndef OLDXAW
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextPosition offset, end = pos + length;
- Bool state;
-
- end = XawMin(end, src->ascii_src.length);
- while ((state = XawTextSourceAnchorAndEntity(w, pos, &anchor, &entity)) &&
- (entity->flags & XAW_TENTF_HIDE))
- pos = anchor->position + entity->offset + entity->length;
- if (state == False ||
- !(entity->flags & XAW_TENTF_REPLACE)) {
- while (entity) {
- offset = anchor->position + entity->offset;
- if (offset >= end)
- break;
- if (offset > pos &&
- (entity->flags & (XAW_TENTF_HIDE | XAW_TENTF_REPLACE))) {
- end = XawMin(end, offset);
- break;
- }
- if ((entity = entity->next) == NULL &&
- (anchor = XawTextSourceNextAnchor(w, anchor)) != NULL)
- entity = anchor->entities;
- }
- }
- else if (state && (entity->flags & XAW_TENTF_REPLACE) && pos < end) {
- XawTextBlock *block = (XawTextBlock*)entity->data;
-
- offset = anchor->position + entity->offset;
- end = XawMin(end, offset + block->length);
- if ((length = end - pos) < 0)
- length = 0;
- text->length = length;
- text->format = XawFmt8Bit;
- if (length == 0) {
- text->firstPos = end = offset + entity->length;
- text->ptr = "";
- }
- else {
- text->firstPos = pos;
- text->ptr = block->ptr + (pos - offset);
- if (pos + length < offset + block->length)
- end = pos + length; /* there is data left to be read */
- else
- end = offset + entity->length;
- }
-
- return (end);
- }
-
- if ((length = end - pos) < 0)
- length = 0;
-#endif
-
- piece = FindPiece(src, pos, &start);
- text->firstPos = pos;
- text->ptr = piece->text + (pos - start);
- count = piece->used - (pos - start);
- text->length = Max(0, (length > count) ? count : length);
- text->format = XawFmt8Bit;
-
- return (pos + text->length);
-}
-
-/*
- * Function:
- * ReplaceText
- *
- * Parameters:
- * w - AsciiSource object
- * startPos - ends of text that will be replaced
- * 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 *text)
-{
- AsciiSrcObject src = (AsciiSrcObject)w;
- Piece *start_piece, *end_piece, *temp_piece;
- XawTextPosition start_first, end_first;
- int length, firstPos;
-
- /*
- * Editing a read only source is not allowed
- */
- if (src->text_src.edit_mode == XawtextRead)
- return (XawEditError);
-
- start_piece = FindPiece(src, startPos, &start_first);
- end_piece = FindPiece(src, endPos, &end_first);
-
-#ifndef OLDXAW
- /*
- * This is a big hack, but I can't think about a clever way to know
- * if the character being moved forward has a negative lbearing.
- *
- */
- if (start_piece->used) {
- int i;
-
- for (i = 0; i < src->text_src.num_text; i++) {
- int line;
- TextWidget ctx = (TextWidget)src->text_src.text[i];
-
- for (line = 0; line < ctx->text.lt.lines; line++)
- if (startPos < ctx->text.lt.info[line + 1].position)
- break;
- if (i < ctx->text.lt.lines &&
- startPos > ctx->text.lt.info[i].position) {
- AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
- XawTextAnchor *anchor;
- XawTextEntity *entity;
- XawTextProperty *property;
- XFontStruct *font;
-
- if (XawTextSourceAnchorAndEntity(w, startPos, &anchor, &entity) &&
- (property = XawTextSinkGetProperty(ctx->text.sink,
- entity->property)) != NULL &&
- (property->mask & XAW_TPROP_FONT))
- font = property->font;
- else
- font = sink->ascii_sink.font;
-
- if (font->min_bounds.lbearing < 0) {
- int lbearing = font->min_bounds.lbearing;
- unsigned char c = *(unsigned char*)
- (start_piece->text + (startPos - start_first));
-
- if (c == '\t' || c == '\n')
- c = ' ';
- else if ((c & 0177) < XawSP || c == 0177) {
- if (sink->ascii_sink.display_nonprinting)
- c = c > 0177 ? '\\' : c + '^';
- else
- c = ' ';
- }
- if (font->per_char &&
- (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
- lbearing = font->per_char[c - font->min_char_or_byte2].lbearing;
- if (lbearing < 0)
- _XawTextNeedsUpdating(ctx, startPos - 1, startPos);
- }
- }
- }
- }
-
-
-#endif
-
- /*
- * Remove Old Stuff
- */
- 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,
- (unsigned)end_piece->used);
- }
- 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),
- (unsigned)(start_piece->used - (startPos - start_first)));
- if (src->ascii_src.use_string_in_place
- && src->ascii_src.length - (endPos - startPos)
- < src->ascii_src.piece_size - 1)
- start_piece->text[src->ascii_src.length - (endPos - startPos)] =
- '\0';
- }
- }
-
- src->ascii_src.length += -(endPos - startPos) + text->length;
-
- if ( text->length != 0) {
- /*
- * Put in the New Stuff
- */
- start_piece = FindPiece(src, startPos, &start_first);
-
- length = text->length;
- firstPos = text->firstPos;
-
- while (length > 0) {
- char *ptr;
- int fill;
-
- if (src->ascii_src.use_string_in_place) {
- if (start_piece->used == src->ascii_src.piece_size - 1) {
- /*
- * If we are in ascii string emulation mode. Then the
- * string is not allowed to grow
- */
- start_piece->used = src->ascii_src.length =
- src->ascii_src.piece_size - 1;
- start_piece->text[src->ascii_src.length] = '\0';
- return (XawEditError);
- }
- }
-
- if (start_piece->used == src->ascii_src.piece_size) {
- BreakPiece(src, start_piece);
- start_piece = FindPiece(src, startPos, &start_first);
- }
-
- fill = Min((int)(src->ascii_src.piece_size - start_piece->used),
- length);
-
- ptr = start_piece->text + (startPos - start_first);
- memmove(ptr + fill, ptr,
- (unsigned)(start_piece->used - (startPos - start_first)));
- memcpy(ptr, text->ptr + firstPos, (unsigned)fill);
-
- startPos += fill;
- firstPos += fill;
- start_piece->used += fill;
- length -= fill;
- }
- }
-
- if (src->ascii_src.use_string_in_place)
- start_piece->text[start_piece->used] = '\0';
-
-#ifdef OLDXAW
- src->ascii_src.changes = True;
- XtCallCallbacks(w, XtNcallback, NULL);
-#endif
-
- return (XawEditDone);
-}
-
-/*
- * Function:
- * Scan
- *
- * Parameters:
- * w - AsciiSource object
- * 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)
-{
- AsciiSrcObject src = (AsciiSrcObject)w;
- Piece *piece;
- XawTextPosition first, first_eol_position = 0;
- register char *ptr, *lim;
- register int cnt = count;
- register unsigned char c;
-
- if (dir == XawsdLeft) {
- if (position <= 0)
- return (0);
- --position;
- }
- else if (position >= src->ascii_src.length)
- return (src->ascii_src.length);
-
- piece = FindPiece(src, position, &first);
- if (piece->used == 0)
- return (0);
-
- ptr = (position - first) + piece->text;
-
- if (dir == XawsdRight) {
- lim = piece->text + piece->used;
- switch (type) {
- case XawstEOL:
- case XawstParagraph:
- case XawstWhiteSpace:
- case XawstAlphaNumeric:
- for (; cnt > 0; cnt--) {
- Bool non_space = False, first_eol = True;
-
- /*CONSTCOND*/
- while (True) {
- if (ptr >= lim) {
- piece = piece->next;
- if (piece == NULL) /* End of text */
- return (src->ascii_src.length);
- ptr = piece->text;
- lim = piece->text + piece->used;
- }
-
- c = *ptr++;
- ++position;
-
- if (type == XawstEOL) {
- if (c == '\n')
- break;
- }
- else if (type == XawstAlphaNumeric) {
- if (!isalnum(c)) {
- if (non_space)
- break;
- }
- else
- non_space = True;
- }
- else if (type == XawstWhiteSpace) {
- if (isspace(c)) {
- if (non_space)
- break;
- }
- else
- non_space = True;
- }
- else { /* XawstParagraph */
- if (first_eol) {
- if (c == '\n') {
- first_eol_position = position;
- first_eol = False;
- }
- }
- else if (c == '\n')
- break;
- else if (!isspace(c))
- first_eol = True;
- }
- }
- }
- break;
- case XawstPositions:
- position += count;
- return (position < src->ascii_src.length ?
- position : src->ascii_src.length);
- case XawstAll:
- return (src->ascii_src.length);
- default:
- break;
- }
- if (!include) {
- if (type == XawstParagraph)
- position = first_eol_position;
- if (count)
- --position;
- }
- }
- else {
- lim = 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) {
- if (ptr < lim) {
- piece = piece->prev;
- if (piece == NULL) /* Begining of text */
- return (0);
- ptr = piece->text + piece->used - 1;
- lim = piece->text;
- }
-
- c = *ptr--;
- --position;
-
- if (type == XawstEOL) {
- if (c == '\n')
- break;
- }
- else if (type == XawstAlphaNumeric) {
- if (!isalnum(c)) {
- if (non_space)
- break;
- }
- else
- non_space = True;
- }
- else if (type == XawstWhiteSpace) {
- if (isspace(c)) {
- if (non_space)
- break;
- }
- else
- non_space = True;
- }
- else { /* XawstParagraph */
- if (first_eol) {
- if (c == '\n') {
- first_eol_position = position;
- first_eol = False;
- }
- }
- else if (c == '\n')
- break;
- else if (!isspace(c))
- first_eol = True;
- }
- }
- }
- break;
- case XawstPositions:
- position -= count - 1;
- return (position > 0 ? position : 0);
- case XawstAll:
- return (0);
- default:
- break;
- }
- if (!include) {
- if (type == XawstParagraph)
- position = first_eol_position;
- if (count)
- ++position;
- }
- position++;
- }
-
- return (position);
-}
-
-/*
- * Function:
- * Search
- *
- * Parameters:
- * w - AsciiSource object
- * position - the 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)
-{
- AsciiSrcObject src = (AsciiSrcObject)w;
- register int count = 0;
- register char *ptr, c;
- char *str;
- Piece *piece;
- char *buf;
- XawTextPosition first;
- int cnt, case_sensitive;
-
- if (dir == XawsdLeft) {
- if (position == 0)
- return (XawTextSearchError);
- position--;
- }
-
- buf = XtMalloc((unsigned)sizeof(unsigned char) * text->length);
- memcpy(buf, text->ptr, (unsigned)text->length);
- piece = FindPiece(src, position, &first);
- ptr = (position - first) + piece->text;
- case_sensitive = text->firstPos;
-
- if (dir == XawsdRight) {
- str = buf;
- c = *str;
- /*CONSTCOND*/
- while (1) {
- if (*ptr++ == c
- || (case_sensitive && isalpha(c) && isalpha(ptr[-1])
- && toupper(c) == toupper(ptr[-1]))) {
- if (++count == text->length)
- break;
- c = *++str;
- }
- else if (count) {
- ptr -= count;
- str -= count;
- position -= count;
- count = 0;
- c = *str;
-
- if (ptr < piece->text) {
- do {
- cnt = piece->text - ptr;
- piece = piece->prev;
- if (piece == NULL) {
- XtFree(buf);
- return (XawTextSearchError);
- }
- ptr = piece->text + piece->used - cnt;
- } while (ptr < piece->text);
- }
- }
- position++;
- if (ptr >= (piece->text + piece->used)) {
- do {
- cnt = ptr - (piece->text + piece->used);
- piece = piece->next;
- if (piece == NULL) {
- XtFree(buf);
- return (XawTextSearchError);
- }
- ptr = piece->text + cnt;
- } while (ptr >= (piece->text + piece->used));
- }
- }
-
- position -= text->length - 1;
- }
- else {
- str = buf + text->length - 1;
- c = *str;
- /*CONSTCOND*/
- while (1) {
- if (*ptr-- == c
- || (case_sensitive && isalpha(c) && isalpha(ptr[1])
- && toupper(c) == toupper(ptr[1]))) {
- if (++count == text->length)
- break;
- c = *--str;
- }
- else if (count) {
- ptr += count;
- str += count;
- position += count;
- count = 0;
- c = *str;
-
- if (ptr >= (piece->text + piece->used)) {
- do {
- cnt = ptr - (piece->text + piece->used);
- piece = piece->next;
- if (piece == NULL) {
- XtFree(buf);
- return (XawTextSearchError);
- }
- ptr = piece->text + cnt;
- } while (ptr >= (piece->text + piece->used));
- }
- }
- position--;
- if (ptr < piece->text) {
- do {
- cnt = piece->text - ptr;
- piece = piece->prev;
- if (piece == NULL) {
- XtFree(buf);
- return (XawTextSearchError);
- }
- ptr = piece->text + piece->used - cnt;
- } while (ptr < piece->text);
- }
- }
- }
-
- XtFree(buf);
-
- return (position);
-}
-
-/*
- * Function:
- * XawAsciiSrcSetValues
- *
- * Parameters:
- * current - current state of the widget
- * request - what was requested
- * cnew - what the widget will become
- * args - representation of changed resources
- * num_args - number of resources that have changed
- *
- * Description:
- * Sets the values for the AsciiSource.
- *
- * Returns:
- * True if redisplay is needed
- */
-static Boolean
-XawAsciiSrcSetValues(Widget current, Widget request, Widget cnew,
- ArgList args, Cardinal *num_args)
-{
- AsciiSrcObject src = (AsciiSrcObject)cnew;
- AsciiSrcObject old_src = (AsciiSrcObject)current;
- Bool total_reset = False, string_set = False;
- FILE *file;
- unsigned int i;
-
- if (old_src->ascii_src.use_string_in_place
- != src->ascii_src.use_string_in_place) {
- XtAppWarning(XtWidgetToApplicationContext(cnew),
- "AsciiSrc: The XtNuseStringInPlace resource may "
- "not be changed.");
- src->ascii_src.use_string_in_place =
- old_src->ascii_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->ascii_src.type != src->ascii_src.type)) {
- RemoveOldStringOrFile(old_src, string_set); /* remove old info */
- file = InitStringOrFile(src, string_set); /* Init new info */
- LoadPieces(src, file, NULL); /* load new info into internal buffers */
- 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->ascii_src.ascii_length != src->ascii_src.ascii_length)
- src->ascii_src.piece_size = src->ascii_src.ascii_length + 1;
-
- if (!total_reset &&
- old_src->ascii_src.piece_size != src->ascii_src.piece_size) {
- String string = StorePiecesInString(old_src);
-
- FreeAllPieces(old_src);
- LoadPieces(src, NULL, string);
- XtFree(string);
- }
-
- return (False);
-}
-
-/*
- * Function:
- * XawAsciiSrcGetValuesHook
- *
- * Parameters:
- * w - AsciiSource Widget
- * args - argument list
- * num_args - number of args
- *
- * Description:
- * This is a get values hook routine that sets the
- * values specific to the ascii source.
- */
-static void
-XawAsciiSrcGetValuesHook(Widget w, ArgList args, Cardinal *num_args)
-{
- AsciiSrcObject src = (AsciiSrcObject)w;
- unsigned int i;
-
- if (src->ascii_src.type == XawAsciiString) {
- for (i = 0; i < *num_args ; i++)
- if (streq(args[i].name, XtNstring)) {
- if (src->ascii_src.use_string_in_place)
- *((char **)args[i].value) = src->ascii_src.first_piece->text;
- else if (XawAsciiSave(w)) /* If save sucessful */
- *((char **)args[i].value) = src->ascii_src.string;
- break;
- }
- }
- }
-
-/*
- * Function:
- * XawAsciiSrcDestroy
- *
- * Parameters:
- * src - Ascii source object to free
- *
- * Description:
- * Destroys an ascii source (frees all data)
- */
-static void
-XawAsciiSrcDestroy(Widget w)
-{
- RemoveOldStringOrFile((AsciiSrcObject) w, True);
-}
-
-/*
- * Public routines
- */
-/*
- * Function:
- * XawAsciiSourceFreeString
- *
- * Parameters:
- * w - AsciiSrc widget
- *
- * Description:
- * Frees the string returned by a get values call
- * on the string when the source is of type string.
- */
-void
-XawAsciiSourceFreeString(Widget w)
-{
- AsciiSrcObject src = (AsciiSrcObject)w;
-
- /* If the src is really a multi, call the multi routine */
- if (XtIsSubclass(w, multiSrcObjectClass)) {
- _XawMultiSourceFreeString(w);
- return;
- }
- else if (!XtIsSubclass(w, asciiSrcObjectClass)) {
- XtErrorMsg("bad argument", "asciiSource", "XawError",
- "XawAsciiSourceFreeString's parameter must be "
- "an asciiSrc or multiSrc.",
- NULL, NULL);
- }
-
- if (src->ascii_src.allocated_string && src->ascii_src.type != XawAsciiFile) {
- src->ascii_src.allocated_string = False;
- XtFree(src->ascii_src.string);
- src->ascii_src.string = NULL;
- }
-}
-
-/*
- * Function:
- * XawAsciiSave
- *
- * Parameters:
- * w - asciiSrc Widget
- *
- * Description:
- * Saves all the pieces into a file or string as required.
- *
- * Returns:
- * True if the save was successful
- */
-Bool
-XawAsciiSave(Widget w)
-{
- AsciiSrcObject src = (AsciiSrcObject)w;
-
- /* If the src is really a multi, call the multi save */
- if (XtIsSubclass(w, multiSrcObjectClass ))
- return (_XawMultiSave(w));
-
- else if (!XtIsSubclass(w, asciiSrcObjectClass))
- XtErrorMsg("bad argument", "asciiSource", "XawError",
- "XawAsciiSave's parameter must be an asciiSrc or multiSrc.",
- NULL, NULL);
-
- /*
- * 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->ascii_src.use_string_in_place)
- return (True);
-
- if (src->ascii_src.type == XawAsciiFile) {
-#ifdef OLDXAW
- if (!src->ascii_src.changes)
-#else
- if (!src->text_src.changed) /* No changes to save */
-#endif
- return (True);
-
- if (WritePiecesToFile(src, src->ascii_src.string) == False)
- return (False);
- }
- else {
- if (src->ascii_src.allocated_string == True)
- XtFree(src->ascii_src.string);
- else
- src->ascii_src.allocated_string = True;
-
- src->ascii_src.string = StorePiecesInString(src);
- }
-#ifdef OLDXAW
- src->ascii_src.changes = False;
-#else
- src->text_src.changed = False;
-#endif
-
- return (True);
-}
-
-/*
- * Function:
- * XawAsciiSaveAsFile
- *
- * Arguments:
- * w - AsciiSrc 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
- */
-Bool
-XawAsciiSaveAsFile(Widget w, _Xconst char *name)
-{
- AsciiSrcObject src = (AsciiSrcObject)w;
- Bool ret;
-
- /* If the src is really a multi, call the multi save */
-
- if (XtIsSubclass( w, multiSrcObjectClass))
- return (_XawMultiSaveAsFile(w, name));
-
- else if (!XtIsSubclass(w, asciiSrcObjectClass))
- XtErrorMsg("bad argument", "asciiSource", "XawError",
- "XawAsciiSaveAsFile's 1st parameter must be an "
- "asciiSrc or multiSrc.",
- NULL, NULL);
-
- if (src->ascii_src.type == XawAsciiFile)
- ret = WritePiecesToFile(src, (String)name);
- else {
- String string = StorePiecesInString(src);
-
- ret = WriteToFile(string, (String)name, src->ascii_src.length);
- XtFree(string);
- }
-
- return (ret);
-}
-
-/*
- * Function:
- * XawAsciiSourceChanged
- *
- * Parameters:
- * w - ascii source widget
- *
- * Description:
- * Returns true if the source has changed since last saved.
- *
- * Returns:
- * A Boolean (see description).
- */
-Bool
-XawAsciiSourceChanged(Widget w)
-{
-#ifdef OLDXAW
- if (XtIsSubclass(w, multiSrcObjectClass))
- return (((MultiSrcObject)w)->multi_src.changes);
-
- if (XtIsSubclass(w, asciiSrcObjectClass))
- return (((AsciiSrcObject)w)->ascii_src.changes);
-#else
- if (XtIsSubclass(w, textSrcObjectClass))
- return (((TextSrcObject)w)->textSrc.changed);
-#endif
- XtErrorMsg("bad argument", "asciiSource", "XawError",
- "XawAsciiSourceChanged parameter must be an "
- "asciiSrc or multiSrc.",
- NULL, NULL);
-
- return (True);
-}
-
-/*
- * Private Functions
- */
-static void
-RemoveOldStringOrFile(AsciiSrcObject src, Bool checkString)
-{
- FreeAllPieces(src);
-
- if (checkString && src->ascii_src.allocated_string) {
- XtFree(src->ascii_src.string);
- src->ascii_src.allocated_string = False;
- src->ascii_src.string = NULL;
- }
-}
-
-/*
- * Function:
- * WriteToFile
- *
- * Parameters:
- * string - string to write
- * name - the 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, unsigned length)
-{
- int fd;
-
- if ((fd = creat(name, 0666)) == -1)
- return (False);
-
- if (write(fd, string, length) == -1) {
- close(fd);
- return (False);
- }
-
- if (close(fd) == -1)
- return (False);
-
- return (True);
-}
-
-/*
- * Function:
- * WritePiecesToFile
- *
- * Parameters:
- * src - ascii source object
- * name - name of the file
- *
- * Description:
- * Almost identical to WriteToFile, but only works for ascii src objects
- * of type XawAsciiFile. This function avoids allocating temporary memory,
- * what can be useful when editing very large files.
- *
- * Returns:
- * returns True if sucessful, False otherwise
- */
-static Bool
-WritePiecesToFile(AsciiSrcObject src, String name)
-{
- Piece *piece;
- int fd;
-
- if (src->ascii_src.data_compression) {
- Piece *tmp;
-
- piece = src->ascii_src.first_piece;
- while (piece) {
- int bytes = src->ascii_src.piece_size - piece->used;
-
- if (bytes > 0 && (tmp = piece->next) != NULL) {
- bytes = XawMin(bytes, tmp->used);
- memcpy(piece->text + piece->used, tmp->text, bytes);
- memmove(tmp->text, tmp->text + bytes, tmp->used - bytes);
- piece->used += bytes;
- if ((tmp->used -= bytes) == 0) {
- RemovePiece(src, tmp);
- continue;
- }
- }
- piece = piece->next;
- }
- }
-
- if ((fd = creat(name, 0666)) == -1)
- return (False);
-
- for (piece = src->ascii_src.first_piece; piece; piece = piece->next)
- if (write(fd, piece->text, piece->used) == -1) {
- close(fd);
- return (False);
- }
-
- if (close(fd) == -1)
- return (False);
-
- return (True);
-}
-
-/*
- * Function:
- * StorePiecesInString
- *
- * Parameters:
- * data - ascii pointer data
- *
- * Description:
- * Store the pieces in memory into a standard ascii string.
- */
-static String
-StorePiecesInString(AsciiSrcObject src)
-{
- String string;
- XawTextPosition first;
- Piece *piece;
-
- string = XtMalloc((unsigned)(src->ascii_src.length + 1));
-
- for (first = 0, piece = src->ascii_src.first_piece ; piece != NULL;
- first += piece->used, piece = piece->next)
- memcpy(string + first, piece->text, (unsigned)piece->used);
-
- string[src->ascii_src.length] = '\0';
-
- /*
- * This will refill all pieces to capacity
- */
- if (src->ascii_src.data_compression) {
- FreeAllPieces(src);
- LoadPieces(src, NULL, string);
- }
-
- return (string);
-}
-
-/*
- * Function:
- * InitStringOrFile
- *
- * Parameters:
- * src - AsciiSource
- *
- * Description:
- * Initializes the string or file.
- */
-static FILE *
-InitStringOrFile(AsciiSrcObject src, Bool newString)
-{
- mode_t open_mode = 0;
- const char *fdopen_mode = NULL;
- int fd;
- FILE *file;
-
- if (src->ascii_src.type == XawAsciiString) {
- if (src->ascii_src.string == NULL)
- src->ascii_src.length = 0;
-
- else if (!src->ascii_src.use_string_in_place) {
- src->ascii_src.string = XtNewString(src->ascii_src.string);
- src->ascii_src.allocated_string = True;
- src->ascii_src.length = strlen(src->ascii_src.string);
- }
-
- if (src->ascii_src.use_string_in_place) {
- if (src->ascii_src.string != NULL)
- src->ascii_src.length = strlen(src->ascii_src.string);
- /* In case the length resource is incorrectly set */
- if (src->ascii_src.length > src->ascii_src.ascii_length)
- src->ascii_src.ascii_length = src->ascii_src.length;
-
- if (src->ascii_src.ascii_length == MAGIC_VALUE)
- src->ascii_src.piece_size = src->ascii_src.length;
- else
- src->ascii_src.piece_size = src->ascii_src.ascii_length + 1;
- }
-
- return (NULL);
- }
-
- /*
- * type is XawAsciiFile
- */
- src->ascii_src.is_tempfile = False;
-
- switch (src->text_src.edit_mode) {
- case XawtextRead:
- if (src->ascii_src.string == NULL)
- XtErrorMsg("NoFile", "asciiSourceCreate", "XawError",
- "Creating a read only disk widget and no file specified.",
- NULL, NULL);
- open_mode = O_RDONLY;
- fdopen_mode = "r";
- break;
- case XawtextAppend:
- case XawtextEdit:
- if (src->ascii_src.string == NULL) {
- src->ascii_src.string = "*ascii-src*";
- src->ascii_src.is_tempfile = True;
- }
- else {
-/* O_NOFOLLOW is a FreeBSD & Linux extension */
-#ifdef O_NOFOLLOW
- open_mode = O_RDWR | O_NOFOLLOW;
-#else
- open_mode = O_RDWR; /* unsafe; subject to race conditions */
-#endif /* O_NOFOLLOW */
- fdopen_mode = "r+";
- }
- break;
- default:
- XtErrorMsg("badMode", "asciiSourceCreate", "XawError",
- "Bad editMode for ascii 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->ascii_src.is_tempfile) {
- src->ascii_src.string = XtNewString(src->ascii_src.string);
- src->ascii_src.allocated_string = True;
- }
-
- if (!src->ascii_src.is_tempfile) {
- if ((fd = open(src->ascii_src.string, open_mode, 0666)) != -1) {
- if ((file = fdopen(fd, fdopen_mode))) {
- (void)fseek(file, 0, SEEK_END);
- src->ascii_src.length = (XawTextPosition)ftell(file);
- return (file);
- }
- }
- {
- String params[2];
- Cardinal num_params = 2;
-
- params[0] = src->ascii_src.string;
- params[1] = strerror(errno);
- XtAppWarningMsg(XtWidgetToApplicationContext((Widget)src),
- "openError", "asciiSourceCreate", "XawWarning",
- "Cannot open file %s; %s", params, &num_params);
- }
- }
- src->ascii_src.length = 0;
- return (NULL);
-}
-
-static void
-LoadPieces(AsciiSrcObject src, FILE *file, char *string)
-{
- char *ptr;
- Piece *piece = NULL;
- XawTextPosition left;
-
- if (string == NULL) {
- if (src->ascii_src.type == XawAsciiFile) {
- if (src->ascii_src.length != 0) {
- int len;
-
- left = 0;
- fseek(file, 0, 0);
- while (left < src->ascii_src.length) {
- ptr = XtMalloc((unsigned)src->ascii_src.piece_size);
- if ((len = fread(ptr, (Size_t)sizeof(unsigned char),
- (Size_t)src->ascii_src.piece_size, file)) < 0)
- XtErrorMsg("readError", "asciiSourceCreate", "XawError",
- "fread returned error.", NULL, NULL);
- piece = AllocNewPiece(src, piece);
- piece->text = ptr;
- piece->used = XawMin(len, src->ascii_src.piece_size);
- left += piece->used;
- }
- }
- else {
- piece = AllocNewPiece(src, NULL);
- piece->text = XtMalloc((unsigned)src->ascii_src.piece_size);
- piece->used = 0;
- }
- return;
- }
- else
- string = src->ascii_src.string;
- }
-
- if (src->ascii_src.use_string_in_place) {
- piece = AllocNewPiece(src, piece);
- piece->used = XawMin(src->ascii_src.length, src->ascii_src.piece_size);
- piece->text = src->ascii_src.string;
- return;
- }
-
- ptr = string;
- left = src->ascii_src.length;
- do {
- piece = AllocNewPiece(src, piece);
-
- piece->text = XtMalloc((unsigned)src->ascii_src.piece_size);
- piece->used = XawMin(left, src->ascii_src.piece_size);
- if (piece->used != 0)
- memcpy(piece->text, ptr, (unsigned)piece->used);
-
- left -= piece->used;
- ptr += piece->used;
- } while (left > 0);
-}
-
-/*
- * Function:
- * AllocNewPiece
- *
- * Parameters:
- * src - AsciiSrc Widget
- * prev - piece just before this one, or NULL
- *
- * Description:
- * Allocates a new piece of memory.
- *
- * Returns:
- * The allocated piece
- */
-static Piece *
-AllocNewPiece(AsciiSrcObject src, Piece *prev)
-{
- Piece *piece = XtNew(Piece);
-
- if (prev == NULL) {
- src->ascii_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 - AsciiSrc Widget
- *
- * Description:
- * Frees all the pieces.
- */
-static void
-FreeAllPieces(AsciiSrcObject src)
-{
- Piece *next, * first = src->ascii_src.first_piece;
-
-#ifdef DEBUG
- if (first->prev != NULL)
- printf("Xaw AsciiSrc 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(AsciiSrcObject src, Piece *piece)
-{
- if (piece->prev == NULL)
- src->ascii_src.first_piece = piece->next;
- else
- piece->prev->next = piece->next;
-
- if (piece->next != NULL)
- piece->next->prev = piece->prev;
-
- if (!src->ascii_src.use_string_in_place)
- XtFree(piece->text);
-
- XtFree((char *)piece);
-}
-
-/*
- * Function:
- * FindPiece
- *
- * Parameters:
- * src - AsciiSrc 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:
- * the piece that contains this position
- */
-static Piece *
-FindPiece(AsciiSrcObject src, XawTextPosition position, XawTextPosition *first)
-{
- Piece *old_piece, *piece;
- XawTextPosition temp;
-
- for (old_piece = NULL, piece = src->ascii_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 - AsciiSrc Widget
- * piece - piece to break
- *
- * Description:
- * Breaks a full piece into two new pieces.
- */
-#define HALF_PIECE (src->ascii_src.piece_size >> 1)
-static void
-BreakPiece(AsciiSrcObject src, Piece *piece)
-{
- Piece *cnew = AllocNewPiece(src, piece);
-
- cnew->text = XtMalloc((unsigned)src->ascii_src.piece_size);
- memcpy(cnew->text, piece->text + HALF_PIECE,
- (unsigned)(src->ascii_src.piece_size - HALF_PIECE));
- piece->used = HALF_PIECE;
- cnew->used = src->ascii_src.piece_size - HALF_PIECE;
-}
-
-/*ARGSUSED*/
-static void
-CvtStringToAsciiType(XrmValuePtr args, Cardinal *num_args,
- XrmValuePtr fromVal, XrmValuePtr toVal)
-{
- static XawAsciiType type;
- XrmQuark q;
- char name[7];
-
- XmuNCopyISOLatin1Lowered(name, (char *)fromVal->addr, sizeof(name));
- q = XrmStringToQuark(name);
-
- if (q == Qstring)
- type = XawAsciiString;
- else 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
-CvtAsciiTypeToString(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 == NULL) {
- pagesize = (XPointer)((long)_XawGetPageSize());
- if (pagesize < (XPointer)BUFSIZ)
- pagesize = (XPointer)BUFSIZ;
- }
-
- value->addr = (XPointer)&pagesize;
-}
-
-#if (defined(ASCII_STRING) || defined(ASCII_DISK))
-# include <X11/Xaw/Cardinals.h>
-#endif
-
-#ifdef ASCII_STRING
-/*
- * Compatability functions.
- */
-/*
- * Function:
- * AsciiStringSourceCreate
- *
- * Parameters:
- * parent - widget that will own this source
- * args - the argument list
- * num_args - ""
- *
- * Description:
- * Creates a string source.
- *
- * Returns:
- * A pointer to the new text source.
- */
-Widget
-XawStringSourceCreate(Widget parent, ArgList args, Cardinal num_args)
-{
- XawTextSource src;
- ArgList ascii_args;
- Arg temp[2];
-
- XtSetArg(temp[0], XtNtype, XawAsciiString);
- XtSetArg(temp[1], XtNuseStringInPlace, True);
- ascii_args = XtMergeArgLists(temp, TWO, args, num_args);
-
- src = XtCreateWidget("genericAsciiString", asciiSrcObjectClass, parent,
- ascii_args, num_args + TWO);
- XtFree((char *)ascii_args);
-
- return (src);
-}
-
-/*
- * This is hacked up to try to emulate old functionality, it
- * may not work, as I have not old code to test it on.
- *
- * Chris D. Peterson 8/31/89.
- */
-void
-XawTextSetLastPos(Widget w, XawTextPosition lastPos)
-{
- AsciiSrcObject src = (AsciiSrcObject)XawTextGetSource(w);
-
- src->ascii_src.piece_size = lastPos;
-}
-#endif /* ASCII_STRING */
-
-#ifdef ASCII_DISK
-/*
- * Function:
- * AsciiDiskSourceCreate
- *
- * Parameters:
- * parent - widget that will own this source
- * args - argument list
- * num_args - ""
- *
- * Description:
- * Creates a disk source.
- *
- * Returns:
- * A pointer to the new text source
- */
-Widget
-XawDiskSourceCreate(Widget parent, ArgList args, Cardinal num_args)
-{
- XawTextSource src;
- ArgList ascii_args;
- Arg temp[1];
- int i;
-
- XtSetArg(temp[0], XtNtype, XawAsciiFile);
- ascii_args = XtMergeArgLists(temp, ONE, args, num_args);
- num_args++;
-
- for (i = 0; i < num_args; i++)
- if (streq(ascii_args[i].name, XtNfile)
- || streq(ascii_args[i].name, XtCFile))
- ascii_args[i].name = XtNstring;
-
- src = XtCreateWidget("genericAsciiDisk", asciiSrcObjectClass, parent,
- ascii_args, num_args);
- XtFree((char *)ascii_args);
-
- return (src);
-}
-#endif /* ASCII_DISK */
+/*
+
+Copyright 1989, 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.
+
+*/
+
+/*
+ * AsciiSrc.c - AsciiSrc object. (For use with the text widget).
+ *
+ */
+
+#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/Xos.h>
+#include <X11/Xfuncs.h>
+#include <X11/Xmu/CharSet.h>
+#include <X11/Xmu/Misc.h>
+#include <X11/Xaw/XawInit.h>
+#include <X11/Xaw/AsciiSrcP.h>
+#include <X11/Xaw/MultiSrcP.h>
+#ifndef OLDXAW
+#include <X11/Xaw/TextSinkP.h>
+#include <X11/Xaw/AsciiSinkP.h>
+#endif
+#include "Private.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#if (defined(ASCII_STRING) || defined(ASCII_DISK))
+#include <X11/Xaw/AsciiText.h> /* for Widget Classes */
+#endif
+
+#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
+
+#define MAGIC_VALUE ((XawTextPosition)-1)
+#define streq(a, b) (strcmp((a), (b)) == 0)
+
+/*
+ * Class Methods
+ */
+static void XawAsciiSrcClassInitialize(void);
+static void XawAsciiSrcDestroy(Widget);
+static void XawAsciiSrcGetValuesHook(Widget, ArgList, Cardinal*);
+static void XawAsciiSrcInitialize(Widget, Widget, ArgList, Cardinal*);
+static Boolean XawAsciiSrcSetValues(Widget, Widget, Widget,
+ ArgList, Cardinal*);
+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*);
+
+/*
+ * Prototypes
+ */
+static Piece *AllocNewPiece(AsciiSrcObject, Piece*);
+static void BreakPiece(AsciiSrcObject, Piece*);
+static Boolean CvtAsciiTypeToString(Display*, XrmValuePtr, Cardinal*,
+ XrmValuePtr, XrmValuePtr, XtPointer*);
+static void CvtStringToAsciiType(XrmValuePtr, Cardinal*,
+ XrmValuePtr, XrmValuePtr);
+static Piece *FindPiece(AsciiSrcObject, XawTextPosition, XawTextPosition*);
+static void FreeAllPieces(AsciiSrcObject);
+static FILE *InitStringOrFile(AsciiSrcObject, Bool);
+static void LoadPieces(AsciiSrcObject, FILE*, char*);
+static void RemoveOldStringOrFile(AsciiSrcObject, Bool);
+static void RemovePiece(AsciiSrcObject, Piece*);
+static String StorePiecesInString(AsciiSrcObject);
+static Bool WriteToFile(String, String, unsigned);
+static Bool WritePiecesToFile(AsciiSrcObject, String);
+static void GetDefaultPieceSize(Widget, int, XrmValue*);
+
+/*
+ * More Prototypes
+ */
+#ifdef ASCII_DISK
+Widget XawAsciiDiskSourceCreate(Widget, ArgList, Cardinal);
+#endif
+#ifdef ASCII_STRING
+Widget XawStringSourceCreate(Widget, ArgList, Cardinal);
+void XawTextSetLastPos(Widget, XawTextPosition);
+#endif
+
+/*
+ * Initialization
+ */
+#define offset(field) XtOffsetOf(AsciiSrcRec, ascii_src.field)
+static XtResource resources[] = {
+ {
+ XtNstring,
+ XtCString,
+ XtRString,
+ sizeof(char*),
+ offset(string),
+ XtRString,
+ NULL
+ },
+ {
+ XtNtype,
+ XtCType,
+ XtRAsciiType,
+ sizeof(XawAsciiType),
+ offset(type),
+ XtRImmediate,
+ (XtPointer)XawAsciiString
+ },
+ {
+ XtNdataCompression,
+ XtCDataCompression,
+ XtRBoolean,
+ sizeof(Boolean),
+ offset(data_compression),
+ XtRImmediate,
+ (XtPointer)True
+ },
+ {
+ 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(ascii_length),
+ XtRImmediate,
+ (XtPointer)MAGIC_VALUE
+ },
+#ifdef ASCII_DISK
+ {
+ XtNfile,
+ XtCFile,
+ XtRString,
+ sizeof(String),
+ offset(filename),
+ XtRString,
+ NULL
+ },
+#endif /* ASCII_DISK */
+};
+#undef offset
+
+
+#define Superclass (&textSrcClassRec)
+AsciiSrcClassRec asciiSrcClassRec = {
+ /* object */
+ {
+ (WidgetClass)Superclass, /* superclass */
+ "AsciiSrc", /* class_name */
+ sizeof(AsciiSrcRec), /* widget_size */
+ XawAsciiSrcClassInitialize, /* class_initialize */
+ NULL, /* class_part_initialize */
+ False, /* class_inited */
+ XawAsciiSrcInitialize, /* initialize */
+ NULL, /* initialize_hook */
+ NULL, /* realize */
+ NULL, /* actions */
+ 0, /* num_actions */
+ resources, /* resources */
+ XtNumber(resources), /* num_resources */
+ NULLQUARK, /* xrm_class */
+ False, /* compress_motion */
+ False, /* compress_exposure */
+ False, /* compress_enterleave */
+ False, /* visible_interest */
+ XawAsciiSrcDestroy, /* destroy */
+ NULL, /* resize */
+ NULL, /* expose */
+ XawAsciiSrcSetValues, /* set_values */
+ NULL, /* set_values_hook */
+ NULL, /* set_values_almost */
+ XawAsciiSrcGetValuesHook, /* get_values_hook */
+ NULL, /* accept_focus */
+ XtVersion, /* version */
+ NULL, /* callback_private */
+ NULL, /* tm_table */
+ NULL, /* query_geometry */
+ NULL, /* display_accelerator */
+ NULL, /* extension */
+ },
+ /* text_src */
+ {
+ ReadText, /* Read */
+ ReplaceText, /* Replace */
+ Scan, /* Scan */
+ Search, /* Search */
+ XtInheritSetSelection, /* SetSelection */
+ XtInheritConvertSelection, /* ConvertSelection */
+ },
+ /* ascii_src */
+ {
+ NULL, /* extension */
+ },
+};
+
+WidgetClass asciiSrcObjectClass = (WidgetClass)&asciiSrcClassRec;
+
+static XrmQuark Qstring, Qfile;
+
+/*
+ * Implementation
+ */
+/*
+ * Function:
+ * XawAsciiSrcClassInitialize()
+ *
+ * Description:
+ * Initializes the asciiSrcObjectClass and install the converters for
+ * AsciiType <-> String.
+ */
+static void
+XawAsciiSrcClassInitialize(void)
+{
+ XawInitializeWidgetSet();
+ Qstring = XrmPermStringToQuark(XtEstring);
+ Qfile = XrmPermStringToQuark(XtEfile);
+ XtAddConverter(XtRString, XtRAsciiType, CvtStringToAsciiType, NULL, 0);
+ XtSetTypeConverter(XtRAsciiType, XtRString, CvtAsciiTypeToString,
+ NULL, 0, XtCacheNone, NULL);
+}
+
+/*
+ * Function:
+ * XawAsciiSrcInitialize
+ *
+ * Parameters:
+ * request - widget requested by the argument list
+ * cnew - new widget with both resource and non resource values
+ * args - (unused)
+ * num_args - (unused)
+ *
+ * Description:
+ * Initializes the ascii src object.
+ */
+/*ARGSUSED*/
+static void
+XawAsciiSrcInitialize(Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ AsciiSrcObject src = (AsciiSrcObject)cnew;
+ FILE *file;
+
+ /*
+ * Set correct flags (override resources) depending upon widget class
+ */
+ src->text_src.text_format = XawFmt8Bit;
+
+#ifdef ASCII_DISK
+ if (XtIsSubclass(XtParent(cnew), asciiDiskWidgetClass)) {
+ src->ascii_src.type = XawAsciiFile;
+ src->ascii_src.string = src->ascii_src.filename;
+ }
+#endif
+
+#ifdef ASCII_STRING
+ if (XtIsSubclass(XtParent(cnew), asciiStringWidgetClass)) {
+ src->ascii_src.use_string_in_place = True;
+ src->ascii_src.type = XawAsciiString;
+ }
+#endif
+
+#ifdef OLDXAW
+ src->ascii_src.changes = False;
+#else
+ src->text_src.changed = False;
+#endif
+ src->ascii_src.allocated_string = False;
+
+ if (src->ascii_src.use_string_in_place && src->ascii_src.string == NULL)
+ src->ascii_src.use_string_in_place = False;
+
+ file = InitStringOrFile(src, src->ascii_src.type == XawAsciiFile);
+ LoadPieces(src, file, NULL);
+
+ if (file != NULL)
+ fclose(file);
+}
+
+/*
+ * Function:
+ * ReadText
+ *
+ * Parameters:
+ * w - AsciiSource widget
+ * pos - position of the text to retreive.
+ * 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)
+{
+ AsciiSrcObject src = (AsciiSrcObject)w;
+ XawTextPosition count, start;
+ Piece *piece;
+#ifndef OLDXAW
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextPosition offset, end = pos + length;
+ Bool state;
+
+ end = XawMin(end, src->ascii_src.length);
+ while ((state = XawTextSourceAnchorAndEntity(w, pos, &anchor, &entity)) &&
+ (entity->flags & XAW_TENTF_HIDE))
+ pos = anchor->position + entity->offset + entity->length;
+ if (state == False ||
+ !(entity->flags & XAW_TENTF_REPLACE)) {
+ while (entity) {
+ offset = anchor->position + entity->offset;
+ if (offset >= end)
+ break;
+ if (offset > pos &&
+ (entity->flags & (XAW_TENTF_HIDE | XAW_TENTF_REPLACE))) {
+ end = XawMin(end, offset);
+ break;
+ }
+ if ((entity = entity->next) == NULL &&
+ (anchor = XawTextSourceNextAnchor(w, anchor)) != NULL)
+ entity = anchor->entities;
+ }
+ }
+ else if (state && (entity->flags & XAW_TENTF_REPLACE) && pos < end) {
+ XawTextBlock *block = (XawTextBlock*)entity->data;
+
+ offset = anchor->position + entity->offset;
+ end = XawMin(end, offset + block->length);
+ if ((length = end - pos) < 0)
+ length = 0;
+ text->length = length;
+ text->format = XawFmt8Bit;
+ if (length == 0) {
+ text->firstPos = end = offset + entity->length;
+ text->ptr = "";
+ }
+ else {
+ text->firstPos = pos;
+ text->ptr = block->ptr + (pos - offset);
+ if (pos + length < offset + block->length)
+ end = pos + length; /* there is data left to be read */
+ else
+ end = offset + entity->length;
+ }
+
+ return (end);
+ }
+
+ if ((length = end - pos) < 0)
+ length = 0;
+#endif
+
+ piece = FindPiece(src, pos, &start);
+ text->firstPos = pos;
+ text->ptr = piece->text + (pos - start);
+ count = piece->used - (pos - start);
+ text->length = Max(0, (length > count) ? count : length);
+ text->format = XawFmt8Bit;
+
+ return (pos + text->length);
+}
+
+/*
+ * Function:
+ * ReplaceText
+ *
+ * Parameters:
+ * w - AsciiSource object
+ * startPos - ends of text that will be replaced
+ * 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 *text)
+{
+ AsciiSrcObject src = (AsciiSrcObject)w;
+ Piece *start_piece, *end_piece, *temp_piece;
+ XawTextPosition start_first, end_first;
+ int length, firstPos;
+
+ /*
+ * Editing a read only source is not allowed
+ */
+ if (src->text_src.edit_mode == XawtextRead)
+ return (XawEditError);
+
+ start_piece = FindPiece(src, startPos, &start_first);
+ end_piece = FindPiece(src, endPos, &end_first);
+
+#ifndef OLDXAW
+ /*
+ * This is a big hack, but I can't think about a clever way to know
+ * if the character being moved forward has a negative lbearing.
+ *
+ */
+ if (start_piece->used) {
+ int i;
+
+ for (i = 0; i < src->text_src.num_text; i++) {
+ int line;
+ TextWidget ctx = (TextWidget)src->text_src.text[i];
+
+ for (line = 0; line < ctx->text.lt.lines; line++)
+ if (startPos < ctx->text.lt.info[line + 1].position)
+ break;
+ if (i < ctx->text.lt.lines &&
+ startPos > ctx->text.lt.info[i].position) {
+ AsciiSinkObject sink = (AsciiSinkObject)ctx->text.sink;
+ XawTextAnchor *anchor;
+ XawTextEntity *entity;
+ XawTextProperty *property;
+ XFontStruct *font;
+
+ if (XawTextSourceAnchorAndEntity(w, startPos, &anchor, &entity) &&
+ (property = XawTextSinkGetProperty(ctx->text.sink,
+ entity->property)) != NULL &&
+ (property->mask & XAW_TPROP_FONT))
+ font = property->font;
+ else
+ font = sink->ascii_sink.font;
+
+ if (font->min_bounds.lbearing < 0) {
+ int lbearing = font->min_bounds.lbearing;
+ unsigned char c = *(unsigned char*)
+ (start_piece->text + (startPos - start_first));
+
+ if (c == '\t' || c == '\n')
+ c = ' ';
+ else if ((c & 0177) < XawSP || c == 0177) {
+ if (sink->ascii_sink.display_nonprinting)
+ c = c > 0177 ? '\\' : c + '^';
+ else
+ c = ' ';
+ }
+ if (font->per_char &&
+ (c >= font->min_char_or_byte2 && c <= font->max_char_or_byte2))
+ lbearing = font->per_char[c - font->min_char_or_byte2].lbearing;
+ if (lbearing < 0)
+ _XawTextNeedsUpdating(ctx, startPos - 1, startPos);
+ }
+ }
+ }
+ }
+
+
+#endif
+
+ /*
+ * Remove Old Stuff
+ */
+ 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,
+ (unsigned)end_piece->used);
+ }
+ 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),
+ (unsigned)(start_piece->used - (startPos - start_first)));
+ if (src->ascii_src.use_string_in_place
+ && src->ascii_src.length - (endPos - startPos)
+ < src->ascii_src.piece_size - 1)
+ start_piece->text[src->ascii_src.length - (endPos - startPos)] =
+ '\0';
+ }
+ }
+
+ src->ascii_src.length += -(endPos - startPos) + text->length;
+
+ if ( text->length != 0) {
+ /*
+ * Put in the New Stuff
+ */
+ start_piece = FindPiece(src, startPos, &start_first);
+
+ length = text->length;
+ firstPos = text->firstPos;
+
+ while (length > 0) {
+ char *ptr;
+ int fill;
+
+ if (src->ascii_src.use_string_in_place) {
+ if (start_piece->used == src->ascii_src.piece_size - 1) {
+ /*
+ * If we are in ascii string emulation mode. Then the
+ * string is not allowed to grow
+ */
+ start_piece->used = src->ascii_src.length =
+ src->ascii_src.piece_size - 1;
+ start_piece->text[src->ascii_src.length] = '\0';
+ return (XawEditError);
+ }
+ }
+
+ if (start_piece->used == src->ascii_src.piece_size) {
+ BreakPiece(src, start_piece);
+ start_piece = FindPiece(src, startPos, &start_first);
+ }
+
+ fill = Min((int)(src->ascii_src.piece_size - start_piece->used),
+ length);
+
+ ptr = start_piece->text + (startPos - start_first);
+ memmove(ptr + fill, ptr,
+ (unsigned)(start_piece->used - (startPos - start_first)));
+ memcpy(ptr, text->ptr + firstPos, (unsigned)fill);
+
+ startPos += fill;
+ firstPos += fill;
+ start_piece->used += fill;
+ length -= fill;
+ }
+ }
+
+ if (src->ascii_src.use_string_in_place)
+ start_piece->text[start_piece->used] = '\0';
+
+#ifdef OLDXAW
+ src->ascii_src.changes = True;
+ XtCallCallbacks(w, XtNcallback, NULL);
+#endif
+
+ return (XawEditDone);
+}
+
+/*
+ * Function:
+ * Scan
+ *
+ * Parameters:
+ * w - AsciiSource object
+ * 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)
+{
+ AsciiSrcObject src = (AsciiSrcObject)w;
+ Piece *piece;
+ XawTextPosition first, first_eol_position = 0;
+ register char *ptr, *lim;
+ register int cnt = count;
+ register unsigned char c;
+
+ if (dir == XawsdLeft) {
+ if (position <= 0)
+ return (0);
+ --position;
+ }
+ else if (position >= src->ascii_src.length)
+ return (src->ascii_src.length);
+
+ piece = FindPiece(src, position, &first);
+ if (piece->used == 0)
+ return (0);
+
+ ptr = (position - first) + piece->text;
+
+ if (dir == XawsdRight) {
+ lim = piece->text + piece->used;
+ switch (type) {
+ case XawstEOL:
+ case XawstParagraph:
+ case XawstWhiteSpace:
+ case XawstAlphaNumeric:
+ for (; cnt > 0; cnt--) {
+ Bool non_space = False, first_eol = True;
+
+ /*CONSTCOND*/
+ while (True) {
+ if (ptr >= lim) {
+ piece = piece->next;
+ if (piece == NULL) /* End of text */
+ return (src->ascii_src.length);
+ ptr = piece->text;
+ lim = piece->text + piece->used;
+ }
+
+ c = *ptr++;
+ ++position;
+
+ if (type == XawstEOL) {
+ if (c == '\n')
+ break;
+ }
+ else if (type == XawstAlphaNumeric) {
+ if (!isalnum(c)) {
+ if (non_space)
+ break;
+ }
+ else
+ non_space = True;
+ }
+ else if (type == XawstWhiteSpace) {
+ if (isspace(c)) {
+ if (non_space)
+ break;
+ }
+ else
+ non_space = True;
+ }
+ else { /* XawstParagraph */
+ if (first_eol) {
+ if (c == '\n') {
+ first_eol_position = position;
+ first_eol = False;
+ }
+ }
+ else if (c == '\n')
+ break;
+ else if (!isspace(c))
+ first_eol = True;
+ }
+ }
+ }
+ break;
+ case XawstPositions:
+ position += count;
+ return (position < src->ascii_src.length ?
+ position : src->ascii_src.length);
+ case XawstAll:
+ return (src->ascii_src.length);
+ default:
+ break;
+ }
+ if (!include) {
+ if (type == XawstParagraph)
+ position = first_eol_position;
+ if (count)
+ --position;
+ }
+ }
+ else {
+ lim = 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) {
+ if (ptr < lim) {
+ piece = piece->prev;
+ if (piece == NULL) /* Begining of text */
+ return (0);
+ ptr = piece->text + piece->used - 1;
+ lim = piece->text;
+ }
+
+ c = *ptr--;
+ --position;
+
+ if (type == XawstEOL) {
+ if (c == '\n')
+ break;
+ }
+ else if (type == XawstAlphaNumeric) {
+ if (!isalnum(c)) {
+ if (non_space)
+ break;
+ }
+ else
+ non_space = True;
+ }
+ else if (type == XawstWhiteSpace) {
+ if (isspace(c)) {
+ if (non_space)
+ break;
+ }
+ else
+ non_space = True;
+ }
+ else { /* XawstParagraph */
+ if (first_eol) {
+ if (c == '\n') {
+ first_eol_position = position;
+ first_eol = False;
+ }
+ }
+ else if (c == '\n')
+ break;
+ else if (!isspace(c))
+ first_eol = True;
+ }
+ }
+ }
+ break;
+ case XawstPositions:
+ position -= count - 1;
+ return (position > 0 ? position : 0);
+ case XawstAll:
+ return (0);
+ default:
+ break;
+ }
+ if (!include) {
+ if (type == XawstParagraph)
+ position = first_eol_position;
+ if (count)
+ ++position;
+ }
+ position++;
+ }
+
+ return (position);
+}
+
+/*
+ * Function:
+ * Search
+ *
+ * Parameters:
+ * w - AsciiSource object
+ * position - the 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)
+{
+ AsciiSrcObject src = (AsciiSrcObject)w;
+ register int count = 0;
+ register char *ptr, c;
+ char *str;
+ Piece *piece;
+ char *buf;
+ XawTextPosition first;
+ int cnt, case_sensitive;
+
+ if (dir == XawsdLeft) {
+ if (position == 0)
+ return (XawTextSearchError);
+ position--;
+ }
+
+ buf = XtMalloc((unsigned)sizeof(unsigned char) * text->length);
+ memcpy(buf, text->ptr, (unsigned)text->length);
+ piece = FindPiece(src, position, &first);
+ ptr = (position - first) + piece->text;
+ case_sensitive = text->firstPos;
+
+ if (dir == XawsdRight) {
+ str = buf;
+ c = *str;
+ /*CONSTCOND*/
+ while (1) {
+ if (*ptr++ == c
+ || (case_sensitive && isalpha(c) && isalpha(ptr[-1])
+ && toupper(c) == toupper(ptr[-1]))) {
+ if (++count == text->length)
+ break;
+ c = *++str;
+ }
+ else if (count) {
+ ptr -= count;
+ str -= count;
+ position -= count;
+ count = 0;
+ c = *str;
+
+ if (ptr < piece->text) {
+ do {
+ cnt = piece->text - ptr;
+ piece = piece->prev;
+ if (piece == NULL) {
+ XtFree(buf);
+ return (XawTextSearchError);
+ }
+ ptr = piece->text + piece->used - cnt;
+ } while (ptr < piece->text);
+ }
+ }
+ position++;
+ if (ptr >= (piece->text + piece->used)) {
+ do {
+ cnt = ptr - (piece->text + piece->used);
+ piece = piece->next;
+ if (piece == NULL) {
+ XtFree(buf);
+ return (XawTextSearchError);
+ }
+ ptr = piece->text + cnt;
+ } while (ptr >= (piece->text + piece->used));
+ }
+ }
+
+ position -= text->length - 1;
+ }
+ else {
+ str = buf + text->length - 1;
+ c = *str;
+ /*CONSTCOND*/
+ while (1) {
+ if (*ptr-- == c
+ || (case_sensitive && isalpha(c) && isalpha(ptr[1])
+ && toupper(c) == toupper(ptr[1]))) {
+ if (++count == text->length)
+ break;
+ c = *--str;
+ }
+ else if (count) {
+ ptr += count;
+ str += count;
+ position += count;
+ count = 0;
+ c = *str;
+
+ if (ptr >= (piece->text + piece->used)) {
+ do {
+ cnt = ptr - (piece->text + piece->used);
+ piece = piece->next;
+ if (piece == NULL) {
+ XtFree(buf);
+ return (XawTextSearchError);
+ }
+ ptr = piece->text + cnt;
+ } while (ptr >= (piece->text + piece->used));
+ }
+ }
+ position--;
+ if (ptr < piece->text) {
+ do {
+ cnt = piece->text - ptr;
+ piece = piece->prev;
+ if (piece == NULL) {
+ XtFree(buf);
+ return (XawTextSearchError);
+ }
+ ptr = piece->text + piece->used - cnt;
+ } while (ptr < piece->text);
+ }
+ }
+ }
+
+ XtFree(buf);
+
+ return (position);
+}
+
+/*
+ * Function:
+ * XawAsciiSrcSetValues
+ *
+ * Parameters:
+ * current - current state of the widget
+ * request - what was requested
+ * cnew - what the widget will become
+ * args - representation of changed resources
+ * num_args - number of resources that have changed
+ *
+ * Description:
+ * Sets the values for the AsciiSource.
+ *
+ * Returns:
+ * True if redisplay is needed
+ */
+static Boolean
+XawAsciiSrcSetValues(Widget current, Widget request, Widget cnew,
+ ArgList args, Cardinal *num_args)
+{
+ AsciiSrcObject src = (AsciiSrcObject)cnew;
+ AsciiSrcObject old_src = (AsciiSrcObject)current;
+ Bool total_reset = False, string_set = False;
+ FILE *file;
+ unsigned int i;
+
+ if (old_src->ascii_src.use_string_in_place
+ != src->ascii_src.use_string_in_place) {
+ XtAppWarning(XtWidgetToApplicationContext(cnew),
+ "AsciiSrc: The XtNuseStringInPlace resource may "
+ "not be changed.");
+ src->ascii_src.use_string_in_place =
+ old_src->ascii_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->ascii_src.type != src->ascii_src.type)) {
+ RemoveOldStringOrFile(old_src, string_set); /* remove old info */
+ file = InitStringOrFile(src, string_set); /* Init new info */
+ LoadPieces(src, file, NULL); /* load new info into internal buffers */
+ 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->ascii_src.ascii_length != src->ascii_src.ascii_length)
+ src->ascii_src.piece_size = src->ascii_src.ascii_length + 1;
+
+ if (!total_reset &&
+ old_src->ascii_src.piece_size != src->ascii_src.piece_size) {
+ String string = StorePiecesInString(old_src);
+
+ FreeAllPieces(old_src);
+ LoadPieces(src, NULL, string);
+ XtFree(string);
+ }
+
+ return (False);
+}
+
+/*
+ * Function:
+ * XawAsciiSrcGetValuesHook
+ *
+ * Parameters:
+ * w - AsciiSource Widget
+ * args - argument list
+ * num_args - number of args
+ *
+ * Description:
+ * This is a get values hook routine that sets the
+ * values specific to the ascii source.
+ */
+static void
+XawAsciiSrcGetValuesHook(Widget w, ArgList args, Cardinal *num_args)
+{
+ AsciiSrcObject src = (AsciiSrcObject)w;
+ unsigned int i;
+
+ if (src->ascii_src.type == XawAsciiString) {
+ for (i = 0; i < *num_args ; i++)
+ if (streq(args[i].name, XtNstring)) {
+ if (src->ascii_src.use_string_in_place)
+ *((char **)args[i].value) = src->ascii_src.first_piece->text;
+ else if (XawAsciiSave(w)) /* If save sucessful */
+ *((char **)args[i].value) = src->ascii_src.string;
+ break;
+ }
+ }
+ }
+
+/*
+ * Function:
+ * XawAsciiSrcDestroy
+ *
+ * Parameters:
+ * src - Ascii source object to free
+ *
+ * Description:
+ * Destroys an ascii source (frees all data)
+ */
+static void
+XawAsciiSrcDestroy(Widget w)
+{
+ RemoveOldStringOrFile((AsciiSrcObject) w, True);
+}
+
+/*
+ * Public routines
+ */
+/*
+ * Function:
+ * XawAsciiSourceFreeString
+ *
+ * Parameters:
+ * w - AsciiSrc widget
+ *
+ * Description:
+ * Frees the string returned by a get values call
+ * on the string when the source is of type string.
+ */
+void
+XawAsciiSourceFreeString(Widget w)
+{
+ AsciiSrcObject src = (AsciiSrcObject)w;
+
+ /* If the src is really a multi, call the multi routine */
+ if (XtIsSubclass(w, multiSrcObjectClass)) {
+ _XawMultiSourceFreeString(w);
+ return;
+ }
+ else if (!XtIsSubclass(w, asciiSrcObjectClass)) {
+ XtErrorMsg("bad argument", "asciiSource", "XawError",
+ "XawAsciiSourceFreeString's parameter must be "
+ "an asciiSrc or multiSrc.",
+ NULL, NULL);
+ }
+
+ if (src->ascii_src.allocated_string && src->ascii_src.type != XawAsciiFile) {
+ src->ascii_src.allocated_string = False;
+ XtFree(src->ascii_src.string);
+ src->ascii_src.string = NULL;
+ }
+}
+
+/*
+ * Function:
+ * XawAsciiSave
+ *
+ * Parameters:
+ * w - asciiSrc Widget
+ *
+ * Description:
+ * Saves all the pieces into a file or string as required.
+ *
+ * Returns:
+ * True if the save was successful
+ */
+Bool
+XawAsciiSave(Widget w)
+{
+ AsciiSrcObject src = (AsciiSrcObject)w;
+
+ /* If the src is really a multi, call the multi save */
+ if (XtIsSubclass(w, multiSrcObjectClass ))
+ return (_XawMultiSave(w));
+
+ else if (!XtIsSubclass(w, asciiSrcObjectClass))
+ XtErrorMsg("bad argument", "asciiSource", "XawError",
+ "XawAsciiSave's parameter must be an asciiSrc or multiSrc.",
+ NULL, NULL);
+
+ /*
+ * 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->ascii_src.use_string_in_place)
+ return (True);
+
+ if (src->ascii_src.type == XawAsciiFile) {
+#ifdef OLDXAW
+ if (!src->ascii_src.changes)
+#else
+ if (!src->text_src.changed) /* No changes to save */
+#endif
+ return (True);
+
+ if (WritePiecesToFile(src, src->ascii_src.string) == False)
+ return (False);
+ }
+ else {
+ if (src->ascii_src.allocated_string == True)
+ XtFree(src->ascii_src.string);
+ else
+ src->ascii_src.allocated_string = True;
+
+ src->ascii_src.string = StorePiecesInString(src);
+ }
+#ifdef OLDXAW
+ src->ascii_src.changes = False;
+#else
+ src->text_src.changed = False;
+#endif
+
+ return (True);
+}
+
+/*
+ * Function:
+ * XawAsciiSaveAsFile
+ *
+ * Arguments:
+ * w - AsciiSrc 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
+ */
+Bool
+XawAsciiSaveAsFile(Widget w, _Xconst char *name)
+{
+ AsciiSrcObject src = (AsciiSrcObject)w;
+ Bool ret;
+
+ /* If the src is really a multi, call the multi save */
+
+ if (XtIsSubclass( w, multiSrcObjectClass))
+ return (_XawMultiSaveAsFile(w, name));
+
+ else if (!XtIsSubclass(w, asciiSrcObjectClass))
+ XtErrorMsg("bad argument", "asciiSource", "XawError",
+ "XawAsciiSaveAsFile's 1st parameter must be an "
+ "asciiSrc or multiSrc.",
+ NULL, NULL);
+
+ if (src->ascii_src.type == XawAsciiFile)
+ ret = WritePiecesToFile(src, (String)name);
+ else {
+ String string = StorePiecesInString(src);
+
+ ret = WriteToFile(string, (String)name, src->ascii_src.length);
+ XtFree(string);
+ }
+
+ return (ret);
+}
+
+/*
+ * Function:
+ * XawAsciiSourceChanged
+ *
+ * Parameters:
+ * w - ascii source widget
+ *
+ * Description:
+ * Returns true if the source has changed since last saved.
+ *
+ * Returns:
+ * A Boolean (see description).
+ */
+Bool
+XawAsciiSourceChanged(Widget w)
+{
+#ifdef OLDXAW
+ if (XtIsSubclass(w, multiSrcObjectClass))
+ return (((MultiSrcObject)w)->multi_src.changes);
+
+ if (XtIsSubclass(w, asciiSrcObjectClass))
+ return (((AsciiSrcObject)w)->ascii_src.changes);
+#else
+ if (XtIsSubclass(w, textSrcObjectClass))
+ return (((TextSrcObject)w)->textSrc.changed);
+#endif
+ XtErrorMsg("bad argument", "asciiSource", "XawError",
+ "XawAsciiSourceChanged parameter must be an "
+ "asciiSrc or multiSrc.",
+ NULL, NULL);
+
+ return (True);
+}
+
+/*
+ * Private Functions
+ */
+static void
+RemoveOldStringOrFile(AsciiSrcObject src, Bool checkString)
+{
+ FreeAllPieces(src);
+
+ if (checkString && src->ascii_src.allocated_string) {
+ XtFree(src->ascii_src.string);
+ src->ascii_src.allocated_string = False;
+ src->ascii_src.string = NULL;
+ }
+}
+
+/*
+ * Function:
+ * WriteToFile
+ *
+ * Parameters:
+ * string - string to write
+ * name - the 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, unsigned length)
+{
+ int fd;
+
+ if ((fd = creat(name, 0666)) == -1)
+ return (False);
+
+ if (write(fd, string, length) == -1) {
+ close(fd);
+ return (False);
+ }
+
+ if (close(fd) == -1)
+ return (False);
+
+ return (True);
+}
+
+/*
+ * Function:
+ * WritePiecesToFile
+ *
+ * Parameters:
+ * src - ascii source object
+ * name - name of the file
+ *
+ * Description:
+ * Almost identical to WriteToFile, but only works for ascii src objects
+ * of type XawAsciiFile. This function avoids allocating temporary memory,
+ * what can be useful when editing very large files.
+ *
+ * Returns:
+ * returns True if sucessful, False otherwise
+ */
+static Bool
+WritePiecesToFile(AsciiSrcObject src, String name)
+{
+ Piece *piece;
+ int fd;
+
+ if (src->ascii_src.data_compression) {
+ Piece *tmp;
+
+ piece = src->ascii_src.first_piece;
+ while (piece) {
+ int bytes = src->ascii_src.piece_size - piece->used;
+
+ if (bytes > 0 && (tmp = piece->next) != NULL) {
+ bytes = XawMin(bytes, tmp->used);
+ memcpy(piece->text + piece->used, tmp->text, bytes);
+ memmove(tmp->text, tmp->text + bytes, tmp->used - bytes);
+ piece->used += bytes;
+ if ((tmp->used -= bytes) == 0) {
+ RemovePiece(src, tmp);
+ continue;
+ }
+ }
+ piece = piece->next;
+ }
+ }
+
+ if ((fd = creat(name, 0666)) == -1)
+ return (False);
+
+ for (piece = src->ascii_src.first_piece; piece; piece = piece->next)
+ if (write(fd, piece->text, piece->used) == -1) {
+ close(fd);
+ return (False);
+ }
+
+ if (close(fd) == -1)
+ return (False);
+
+ return (True);
+}
+
+/*
+ * Function:
+ * StorePiecesInString
+ *
+ * Parameters:
+ * data - ascii pointer data
+ *
+ * Description:
+ * Store the pieces in memory into a standard ascii string.
+ */
+static String
+StorePiecesInString(AsciiSrcObject src)
+{
+ String string;
+ XawTextPosition first;
+ Piece *piece;
+
+ string = XtMalloc((unsigned)(src->ascii_src.length + 1));
+
+ for (first = 0, piece = src->ascii_src.first_piece ; piece != NULL;
+ first += piece->used, piece = piece->next)
+ memcpy(string + first, piece->text, (unsigned)piece->used);
+
+ string[src->ascii_src.length] = '\0';
+
+ /*
+ * This will refill all pieces to capacity
+ */
+ if (src->ascii_src.data_compression) {
+ FreeAllPieces(src);
+ LoadPieces(src, NULL, string);
+ }
+
+ return (string);
+}
+
+/*
+ * Function:
+ * InitStringOrFile
+ *
+ * Parameters:
+ * src - AsciiSource
+ *
+ * Description:
+ * Initializes the string or file.
+ */
+static FILE *
+InitStringOrFile(AsciiSrcObject src, Bool newString)
+{
+ mode_t open_mode = 0;
+ const char *fdopen_mode = NULL;
+ int fd;
+ FILE *file;
+
+ if (src->ascii_src.type == XawAsciiString) {
+ if (src->ascii_src.string == NULL)
+ src->ascii_src.length = 0;
+
+ else if (!src->ascii_src.use_string_in_place) {
+ src->ascii_src.string = XtNewString(src->ascii_src.string);
+ src->ascii_src.allocated_string = True;
+ src->ascii_src.length = strlen(src->ascii_src.string);
+ }
+
+ if (src->ascii_src.use_string_in_place) {
+ if (src->ascii_src.string != NULL)
+ src->ascii_src.length = strlen(src->ascii_src.string);
+ /* In case the length resource is incorrectly set */
+ if (src->ascii_src.length > src->ascii_src.ascii_length)
+ src->ascii_src.ascii_length = src->ascii_src.length;
+
+ if (src->ascii_src.ascii_length == MAGIC_VALUE)
+ src->ascii_src.piece_size = src->ascii_src.length;
+ else
+ src->ascii_src.piece_size = src->ascii_src.ascii_length + 1;
+ }
+
+ return (NULL);
+ }
+
+ /*
+ * type is XawAsciiFile
+ */
+ src->ascii_src.is_tempfile = False;
+
+ switch (src->text_src.edit_mode) {
+ case XawtextRead:
+ if (src->ascii_src.string == NULL)
+ XtErrorMsg("NoFile", "asciiSourceCreate", "XawError",
+ "Creating a read only disk widget and no file specified.",
+ NULL, NULL);
+ open_mode = O_RDONLY;
+ fdopen_mode = "r";
+ break;
+ case XawtextAppend:
+ case XawtextEdit:
+ if (src->ascii_src.string == NULL) {
+ src->ascii_src.string = "*ascii-src*";
+ src->ascii_src.is_tempfile = True;
+ }
+ else {
+/* O_NOFOLLOW is a FreeBSD & Linux extension */
+#ifdef O_NOFOLLOW
+ open_mode = O_RDWR | O_NOFOLLOW;
+#else
+ open_mode = O_RDWR; /* unsafe; subject to race conditions */
+#endif /* O_NOFOLLOW */
+ fdopen_mode = "r+";
+ }
+ break;
+ default:
+ XtErrorMsg("badMode", "asciiSourceCreate", "XawError",
+ "Bad editMode for ascii 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->ascii_src.is_tempfile) {
+ src->ascii_src.string = XtNewString(src->ascii_src.string);
+ src->ascii_src.allocated_string = True;
+ }
+
+ if (!src->ascii_src.is_tempfile) {
+ if ((fd = open(src->ascii_src.string, open_mode, 0666)) != -1) {
+ if ((file = fdopen(fd, fdopen_mode))) {
+ (void)fseek(file, 0, SEEK_END);
+ src->ascii_src.length = (XawTextPosition)ftell(file);
+ return (file);
+ }
+ }
+ {
+ String params[2];
+ Cardinal num_params = 2;
+
+ params[0] = src->ascii_src.string;
+ params[1] = strerror(errno);
+ XtAppWarningMsg(XtWidgetToApplicationContext((Widget)src),
+ "openError", "asciiSourceCreate", "XawWarning",
+ "Cannot open file %s; %s", params, &num_params);
+ }
+ }
+ src->ascii_src.length = 0;
+ return (NULL);
+}
+
+static void
+LoadPieces(AsciiSrcObject src, FILE *file, char *string)
+{
+ char *ptr;
+ Piece *piece = NULL;
+ XawTextPosition left;
+
+ if (string == NULL) {
+ if (src->ascii_src.type == XawAsciiFile) {
+ if (src->ascii_src.length != 0) {
+ int len;
+
+ left = 0;
+ fseek(file, 0, 0);
+ while (left < src->ascii_src.length) {
+ ptr = XtMalloc((unsigned)src->ascii_src.piece_size);
+ if ((len = fread(ptr, (Size_t)sizeof(unsigned char),
+ (Size_t)src->ascii_src.piece_size, file)) < 0)
+ XtErrorMsg("readError", "asciiSourceCreate", "XawError",
+ "fread returned error.", NULL, NULL);
+ piece = AllocNewPiece(src, piece);
+ piece->text = ptr;
+ piece->used = XawMin(len, src->ascii_src.piece_size);
+ left += piece->used;
+ }
+ }
+ else {
+ piece = AllocNewPiece(src, NULL);
+ piece->text = XtMalloc((unsigned)src->ascii_src.piece_size);
+ piece->used = 0;
+ }
+ return;
+ }
+ else
+ string = src->ascii_src.string;
+ }
+
+ if (src->ascii_src.use_string_in_place) {
+ piece = AllocNewPiece(src, piece);
+ piece->used = XawMin(src->ascii_src.length, src->ascii_src.piece_size);
+ piece->text = src->ascii_src.string;
+ return;
+ }
+
+ ptr = string;
+ left = src->ascii_src.length;
+ do {
+ piece = AllocNewPiece(src, piece);
+
+ piece->text = XtMalloc((unsigned)src->ascii_src.piece_size);
+ piece->used = XawMin(left, src->ascii_src.piece_size);
+ if (piece->used != 0)
+ memcpy(piece->text, ptr, (unsigned)piece->used);
+
+ left -= piece->used;
+ ptr += piece->used;
+ } while (left > 0);
+}
+
+/*
+ * Function:
+ * AllocNewPiece
+ *
+ * Parameters:
+ * src - AsciiSrc Widget
+ * prev - piece just before this one, or NULL
+ *
+ * Description:
+ * Allocates a new piece of memory.
+ *
+ * Returns:
+ * The allocated piece
+ */
+static Piece *
+AllocNewPiece(AsciiSrcObject src, Piece *prev)
+{
+ Piece *piece = XtNew(Piece);
+
+ if (prev == NULL) {
+ src->ascii_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 - AsciiSrc Widget
+ *
+ * Description:
+ * Frees all the pieces.
+ */
+static void
+FreeAllPieces(AsciiSrcObject src)
+{
+ Piece *next, * first = src->ascii_src.first_piece;
+
+#ifdef DEBUG
+ if (first->prev != NULL)
+ printf("Xaw AsciiSrc 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(AsciiSrcObject src, Piece *piece)
+{
+ if (piece->prev == NULL)
+ src->ascii_src.first_piece = piece->next;
+ else
+ piece->prev->next = piece->next;
+
+ if (piece->next != NULL)
+ piece->next->prev = piece->prev;
+
+ if (!src->ascii_src.use_string_in_place)
+ XtFree(piece->text);
+
+ XtFree((char *)piece);
+}
+
+/*
+ * Function:
+ * FindPiece
+ *
+ * Parameters:
+ * src - AsciiSrc 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:
+ * the piece that contains this position
+ */
+static Piece *
+FindPiece(AsciiSrcObject src, XawTextPosition position, XawTextPosition *first)
+{
+ Piece *old_piece, *piece;
+ XawTextPosition temp;
+
+ for (old_piece = NULL, piece = src->ascii_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 - AsciiSrc Widget
+ * piece - piece to break
+ *
+ * Description:
+ * Breaks a full piece into two new pieces.
+ */
+#define HALF_PIECE (src->ascii_src.piece_size >> 1)
+static void
+BreakPiece(AsciiSrcObject src, Piece *piece)
+{
+ Piece *cnew = AllocNewPiece(src, piece);
+
+ cnew->text = XtMalloc((unsigned)src->ascii_src.piece_size);
+ memcpy(cnew->text, piece->text + HALF_PIECE,
+ (unsigned)(src->ascii_src.piece_size - HALF_PIECE));
+ piece->used = HALF_PIECE;
+ cnew->used = src->ascii_src.piece_size - HALF_PIECE;
+}
+
+/*ARGSUSED*/
+static void
+CvtStringToAsciiType(XrmValuePtr args, Cardinal *num_args,
+ XrmValuePtr fromVal, XrmValuePtr toVal)
+{
+ static XawAsciiType type;
+ XrmQuark q;
+ char name[7];
+
+ XmuNCopyISOLatin1Lowered(name, (char *)fromVal->addr, sizeof(name));
+ q = XrmStringToQuark(name);
+
+ if (q == Qstring)
+ type = XawAsciiString;
+ else 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
+CvtAsciiTypeToString(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 == NULL) {
+ pagesize = (XPointer)((long)_XawGetPageSize());
+ if (pagesize < (XPointer)BUFSIZ)
+ pagesize = (XPointer)BUFSIZ;
+ }
+
+ value->addr = (XPointer)&pagesize;
+}
+
+#if (defined(ASCII_STRING) || defined(ASCII_DISK))
+# include <X11/Xaw/Cardinals.h>
+#endif
+
+#ifdef ASCII_STRING
+/*
+ * Compatability functions.
+ */
+/*
+ * Function:
+ * AsciiStringSourceCreate
+ *
+ * Parameters:
+ * parent - widget that will own this source
+ * args - the argument list
+ * num_args - ""
+ *
+ * Description:
+ * Creates a string source.
+ *
+ * Returns:
+ * A pointer to the new text source.
+ */
+Widget
+XawStringSourceCreate(Widget parent, ArgList args, Cardinal num_args)
+{
+ XawTextSource src;
+ ArgList ascii_args;
+ Arg temp[2];
+
+ XtSetArg(temp[0], XtNtype, XawAsciiString);
+ XtSetArg(temp[1], XtNuseStringInPlace, True);
+ ascii_args = XtMergeArgLists(temp, TWO, args, num_args);
+
+ src = XtCreateWidget("genericAsciiString", asciiSrcObjectClass, parent,
+ ascii_args, num_args + TWO);
+ XtFree((char *)ascii_args);
+
+ return (src);
+}
+
+/*
+ * This is hacked up to try to emulate old functionality, it
+ * may not work, as I have not old code to test it on.
+ *
+ * Chris D. Peterson 8/31/89.
+ */
+void
+XawTextSetLastPos(Widget w, XawTextPosition lastPos)
+{
+ AsciiSrcObject src = (AsciiSrcObject)XawTextGetSource(w);
+
+ src->ascii_src.piece_size = lastPos;
+}
+#endif /* ASCII_STRING */
+
+#ifdef ASCII_DISK
+/*
+ * Function:
+ * AsciiDiskSourceCreate
+ *
+ * Parameters:
+ * parent - widget that will own this source
+ * args - argument list
+ * num_args - ""
+ *
+ * Description:
+ * Creates a disk source.
+ *
+ * Returns:
+ * A pointer to the new text source
+ */
+Widget
+XawDiskSourceCreate(Widget parent, ArgList args, Cardinal num_args)
+{
+ XawTextSource src;
+ ArgList ascii_args;
+ Arg temp[1];
+ int i;
+
+ XtSetArg(temp[0], XtNtype, XawAsciiFile);
+ ascii_args = XtMergeArgLists(temp, ONE, args, num_args);
+ num_args++;
+
+ for (i = 0; i < num_args; i++)
+ if (streq(ascii_args[i].name, XtNfile)
+ || streq(ascii_args[i].name, XtCFile))
+ ascii_args[i].name = XtNstring;
+
+ src = XtCreateWidget("genericAsciiDisk", asciiSrcObjectClass, parent,
+ ascii_args, num_args);
+ XtFree((char *)ascii_args);
+
+ return (src);
+}
+#endif /* ASCII_DISK */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 16:21:17 +0000