493 lines
12 KiB
C
493 lines
12 KiB
C
/*
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* Copyright (C) 1989-95 GROUPE BULL
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* Except as contained in this notice, the name of GROUPE BULL shall not be
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* used in advertising or otherwise to promote the sale, use or other dealings
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* in this Software without prior written authorization from GROUPE BULL.
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*/
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/*****************************************************************************\
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* data.c: *
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* *
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* XPM library *
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* IO utilities *
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* *
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* Developed by Arnaud Le Hors *
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\*****************************************************************************/
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/* October 2004, source code review by Thomas Biege <thomas@suse.de> */
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#ifndef CXPMPROG
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#if 0
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/* Official version number */
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static char *RCS_Version = "$XpmVersion: 3.4k $";
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/* Internal version number */
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static char *RCS_Id = "Id: xpm.shar,v 3.71 1998/03/19 19:47:14 lehors Exp $";
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#endif
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include "XpmI.h"
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#endif
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#include <ctype.h>
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#ifndef CXPMPROG
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#define Getc(data, file) getc(file)
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#define Ungetc(data, c, file) ungetc(c, file)
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#endif
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static int
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ParseComment(xpmData *data)
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{
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if (data->type == XPMBUFFER) {
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register char c;
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register unsigned int n = 0;
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unsigned int notend;
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char *s;
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const char *s2;
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s = data->Comment;
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*s = data->Bcmt[0];
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/* skip the string beginning comment */
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s2 = data->Bcmt;
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do {
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c = *data->cptr++;
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*++s = c;
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n++;
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s2++;
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} while (c == *s2 && *s2 != '\0' && c);
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if (*s2 != '\0') {
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/* this wasn't the beginning of a comment */
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data->cptr -= n;
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return 0;
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}
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/* store comment */
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data->Comment[0] = *s;
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s = data->Comment;
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notend = 1;
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n = 0;
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while (notend) {
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s2 = data->Ecmt;
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while (*s != *s2 && c) {
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c = *data->cptr++;
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if (n == XPMMAXCMTLEN - 1) { /* forget it */
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s = data->Comment;
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n = 0;
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}
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*++s = c;
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n++;
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}
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data->CommentLength = n;
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do {
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c = *data->cptr++;
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if (n == XPMMAXCMTLEN - 1) { /* forget it */
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s = data->Comment;
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n = 0;
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}
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*++s = c;
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n++;
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s2++;
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} while (c == *s2 && *s2 != '\0' && c);
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if (*s2 == '\0' || c == '\0') {
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/* this is the end of the comment */
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notend = 0;
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data->cptr--;
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}
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}
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return 0;
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} else {
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FILE *file = data->stream.file;
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register int c;
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register unsigned int n = 0, a;
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unsigned int notend;
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char *s;
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const char *s2;
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s = data->Comment;
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*s = data->Bcmt[0];
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/* skip the string beginning comment */
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s2 = data->Bcmt;
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do {
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c = Getc(data, file);
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*++s = c;
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n++;
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s2++;
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} while (c == *s2 && *s2 != '\0' && c != EOF);
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if (*s2 != '\0') {
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/* this wasn't the beginning of a comment */
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/* put characters back in the order that we got them */
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for (a = n; a > 0; a--, s--)
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Ungetc(data, *s, file);
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return 0;
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}
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/* store comment */
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data->Comment[0] = *s;
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s = data->Comment;
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notend = 1;
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n = 0;
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while (notend) {
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s2 = data->Ecmt;
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while (*s != *s2 && c != EOF) {
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c = Getc(data, file);
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if (n == XPMMAXCMTLEN - 1) { /* forget it */
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s = data->Comment;
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n = 0;
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}
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*++s = c;
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n++;
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}
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data->CommentLength = n;
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do {
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c = Getc(data, file);
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if (n == XPMMAXCMTLEN - 1) { /* forget it */
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s = data->Comment;
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n = 0;
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}
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*++s = c;
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n++;
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s2++;
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} while (c == *s2 && *s2 != '\0' && c != EOF);
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if (*s2 == '\0') {
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/* this is the end of the comment */
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notend = 0;
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Ungetc(data, *s, file);
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}
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else if (c == EOF) {
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/* hit end of file before the end of the comment */
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return XpmFileInvalid;
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}
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}
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return 0;
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}
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}
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/*
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* skip to the end of the current string and the beginning of the next one
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*/
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int
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xpmNextString(xpmData *data)
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{
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if (!data->type)
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data->cptr = (data->stream.data)[++data->line];
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else if (data->type == XPMBUFFER) {
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register char c;
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/* get to the end of the current string */
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if (data->Eos) {
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while ((c = *data->cptr++) && c != data->Eos && c != '\0');
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if (c == '\0')
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return XpmFileInvalid;
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}
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/*
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* then get to the beginning of the next string looking for possible
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* comment
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*/
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if (data->Bos) {
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while ((c = *data->cptr++) && c != data->Bos && c != '\0')
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if (data->Bcmt && c == data->Bcmt[0])
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ParseComment(data);
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} else if (data->Bcmt) { /* XPM2 natural */
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while (((c = *data->cptr++) == data->Bcmt[0]) && c != '\0')
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ParseComment(data);
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data->cptr--;
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}
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} else {
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register int c;
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FILE *file = data->stream.file;
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/* get to the end of the current string */
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if (data->Eos) {
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while ((c = Getc(data, file)) != data->Eos && c != EOF);
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if (c == EOF)
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return XpmFileInvalid;
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}
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/*
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* then get to the beginning of the next string looking for possible
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* comment
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*/
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if (data->Bos) {
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while ((c = Getc(data, file)) != data->Bos && c != EOF)
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if (data->Bcmt && c == data->Bcmt[0])
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ParseComment(data);
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} else if (data->Bcmt) { /* XPM2 natural */
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while ((c = Getc(data, file)) == data->Bcmt[0])
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ParseComment(data);
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Ungetc(data, c, file);
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}
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}
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return XpmSuccess;
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}
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/*
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* skip whitespace and return the following word
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*/
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unsigned int
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xpmNextWord(
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xpmData *data,
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char *buf,
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unsigned int buflen)
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{
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register unsigned int n = 0;
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int c;
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if (!data->type || data->type == XPMBUFFER) {
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while ((c = *data->cptr) && isspace(c) && (c != data->Eos))
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data->cptr++;
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do {
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c = *data->cptr++;
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*buf++ = c;
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n++;
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} while (c && !isspace(c) && (c != data->Eos) && (n < buflen));
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n--;
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data->cptr--;
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} else {
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FILE *file = data->stream.file;
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while ((c = Getc(data, file)) != EOF && isspace(c) && c != data->Eos);
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while (!isspace(c) && c != data->Eos && c != EOF && n < buflen) {
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*buf++ = c;
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n++;
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c = Getc(data, file);
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}
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Ungetc(data, c, file);
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}
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return (n); /* this returns bytes read + 1 */
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}
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/*
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* skip whitespace and compute the following unsigned int,
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* returns 1 if one is found and 0 if not
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*/
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int
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xpmNextUI(
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xpmData *data,
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unsigned int *ui_return)
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{
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char buf[BUFSIZ];
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int l;
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l = xpmNextWord(data, buf, BUFSIZ);
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return xpmatoui(buf, l, ui_return);
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}
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/*
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* return end of string - WARNING: malloc!
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*/
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int
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xpmGetString(
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xpmData *data,
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char **sptr,
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unsigned int *l)
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{
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unsigned int i, n = 0;
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int c;
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char *p = NULL, *q, buf[BUFSIZ];
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if (!data->type || data->type == XPMBUFFER) {
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if (data->cptr) {
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char *start = data->cptr;
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while ((c = *data->cptr) && c != data->Eos)
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data->cptr++;
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n = data->cptr - start + 1;
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p = (char *) XpmMalloc(n);
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if (!p)
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return (XpmNoMemory);
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strncpy(p, start, n);
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if (data->type) /* XPMBUFFER */
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p[n - 1] = '\0';
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}
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} else {
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FILE *file = data->stream.file;
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if ((c = Getc(data, file)) == EOF)
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return (XpmFileInvalid);
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i = 0;
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q = buf;
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p = (char *) XpmMalloc(1);
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while (c != data->Eos && c != EOF) {
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if (i == BUFSIZ) {
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/* get to the end of the buffer */
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/* malloc needed memory */
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q = (char *) XpmRealloc(p, n + i);
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if (!q) {
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XpmFree(p);
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return (XpmNoMemory);
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}
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p = q;
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q += n;
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/* and copy what we already have */
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strncpy(q, buf, i);
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n += i;
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i = 0;
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q = buf;
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}
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*q++ = c;
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i++;
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c = Getc(data, file);
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}
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if (c == EOF) {
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XpmFree(p);
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return (XpmFileInvalid);
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}
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if (n + i != 0) {
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/* malloc needed memory */
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q = (char *) XpmRealloc(p, n + i + 1);
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if (!q) {
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XpmFree(p);
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return (XpmNoMemory);
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}
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p = q;
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q += n;
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/* and copy the buffer */
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strncpy(q, buf, i);
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n += i;
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p[n++] = '\0';
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} else {
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*p = '\0';
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n = 1;
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}
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Ungetc(data, c, file);
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}
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*sptr = p;
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*l = n;
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return (XpmSuccess);
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}
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/*
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* get the current comment line
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*/
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int
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xpmGetCmt(
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xpmData *data,
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char **cmt)
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{
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if (!data->type)
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*cmt = NULL;
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else if (data->CommentLength != 0 && data->CommentLength < UINT_MAX - 1) {
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if( (*cmt = (char *) XpmMalloc(data->CommentLength + 1)) == NULL)
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return XpmNoMemory;
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strncpy(*cmt, data->Comment, data->CommentLength);
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(*cmt)[data->CommentLength] = '\0';
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data->CommentLength = 0;
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} else
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*cmt = NULL;
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return 0;
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}
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xpmDataType xpmDataTypes[] =
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{
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{"", "!", "\n", '\0', '\n', "", "", "", ""}, /* Natural type */
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{"C", "/*", "*/", '"', '"', ",\n", "static char *", "[] = {\n", "};\n"},
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{"Lisp", ";", "\n", '"', '"', "\n", "(setq ", " '(\n", "))\n"},
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{NULL, NULL, NULL, 0, 0, NULL, NULL, NULL, NULL}
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};
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/*
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* parse xpm header
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*/
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int
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xpmParseHeader(xpmData *data)
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{
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char buf[BUFSIZ+1] = {0};
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int l, n = 0;
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if (data->type) {
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data->Bos = '\0';
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data->Eos = '\n';
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data->Bcmt = data->Ecmt = NULL;
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l = xpmNextWord(data, buf, BUFSIZ);
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if (l == 7 && !strncmp("#define", buf, 7)) {
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/* this maybe an XPM 1 file */
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char *ptr;
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l = xpmNextWord(data, buf, BUFSIZ);
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if (!l)
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return (XpmFileInvalid);
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buf[l] = '\0';
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ptr = strrchr(buf, '_');
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if (!ptr || strncmp("_format", ptr, l - (ptr - buf)))
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return XpmFileInvalid;
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/* this is definitely an XPM 1 file */
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data->format = 1;
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n = 1; /* handle XPM1 as mainly XPM2 C */
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} else {
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/*
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* skip the first word, get the second one, and see if this is
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* XPM 2 or 3
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*/
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l = xpmNextWord(data, buf, BUFSIZ);
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if ((l == 3 && !strncmp("XPM", buf, 3)) ||
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(l == 4 && !strncmp("XPM2", buf, 4))) {
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if (l == 3)
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n = 1; /* handle XPM as XPM2 C */
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else {
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/* get the type key word */
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l = xpmNextWord(data, buf, BUFSIZ);
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/*
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* get infos about this type
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*/
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while (xpmDataTypes[n].type
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&& strncmp(xpmDataTypes[n].type, buf, l))
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n++;
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}
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data->format = 0;
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} else
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/* nope this is not an XPM file */
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return XpmFileInvalid;
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}
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if (xpmDataTypes[n].type) {
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if (n == 0) { /* natural type */
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data->Bcmt = xpmDataTypes[n].Bcmt;
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data->Ecmt = xpmDataTypes[n].Ecmt;
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xpmNextString(data); /* skip the end of the headerline */
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data->Bos = xpmDataTypes[n].Bos;
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data->Eos = xpmDataTypes[n].Eos;
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} else {
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data->Bcmt = xpmDataTypes[n].Bcmt;
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data->Ecmt = xpmDataTypes[n].Ecmt;
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if (!data->format) { /* XPM 2 or 3 */
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data->Bos = xpmDataTypes[n].Bos;
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data->Eos = '\0';
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/* get to the beginning of the first string */
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xpmNextString(data);
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data->Eos = xpmDataTypes[n].Eos;
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} else /* XPM 1 skip end of line */
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xpmNextString(data);
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}
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} else
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/* we don't know about that type of XPM file... */
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return XpmFileInvalid;
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}
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return XpmSuccess;
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}
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