[wxWidgets.git] / src / xpm / dataxpm.c

/*
 * Copyright (C) 1989-95 GROUPE BULL
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * 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
 * GROUPE BULL 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 GROUPE BULL shall not be
 * used in advertising or otherwise to promote the sale, use or other dealings
 * in this Software without prior written authorization from GROUPE BULL.
 */

/*****************************************************************************\
* data.c:                                                                     *
*                                                                             *
*  XPM library                                                                *
*  IO utilities                                                               *
*                                                                             *
*  Developed by Arnaud Le Hors                                                *
\*****************************************************************************/

#ifndef CXPMPROG
/* Official version number */
static char *RCS_Version = "$XpmVersion: 3.4k $";

/* Internal version number */
static char *RCS_Id = "$Id$";

#include "XpmI.h"
#endif
#include <ctype.h>

#ifndef CXPMPROG
#define Getc(data, file) getc(file)
#define Ungetc(data, c, file) ungetc(c, file)
#endif

static int
ParseComment(data)
    xpmData *data;
{
    if (data->type == XPMBUFFER) {
	register char c;
	register unsigned int n = 0;
	unsigned int notend;
	char *s, *s2;

	s = data->Comment;
	*s = data->Bcmt[0];

	/* skip the string beginning comment */
	s2 = data->Bcmt;
	do {
	    c = *data->cptr++;
	    *++s = c;
	    n++;
	    s2++;
	} while (c == *s2 && *s2 != '\0' && c);

	if (*s2 != '\0') {
	    /* this wasn't the beginning of a comment */
	    data->cptr -= n;
	    return 0;
	}
	/* store comment */
	data->Comment[0] = *s;
	s = data->Comment;
	notend = 1;
	n = 0;
	while (notend) {
	    s2 = data->Ecmt;
	    while (*s != *s2 && c) {
		c = *data->cptr++;
		if (n == XPMMAXCMTLEN - 1)  { /* forget it */
		    s = data->Comment;
		    n = 0;
		}
		*++s = c;
		n++;
	    }
	    data->CommentLength = n;
	    do {
		c = *data->cptr++;
		if (n == XPMMAXCMTLEN - 1)  { /* forget it */
		    s = data->Comment;
		    n = 0;
		}
		*++s = c;
		n++;
		s2++;
	    } while (c == *s2 && *s2 != '\0' && c);
	    if (*s2 == '\0') {
		/* this is the end of the comment */
		notend = 0;
		data->cptr--;
	    }
	}
	return 0;
    } else {
	FILE *file = data->stream.file;
	register int c;
	register unsigned int n = 0, a;
	unsigned int notend;
	char *s, *s2;

	s = data->Comment;
	*s = data->Bcmt[0];

	/* skip the string beginning comment */
	s2 = data->Bcmt;
	do {
	    c = Getc(data, file);
	    *++s = c;
	    n++;
	    s2++;
	} while (c == *s2 && *s2 != '\0' && c != EOF);

	if (*s2 != '\0') {
	    /* this wasn't the beginning of a comment */
	    /* put characters back in the order that we got them */
	    for (a = n; a > 0; a--, s--)
		Ungetc(data, *s, file);
	    return 0;
	}
	/* store comment */
	data->Comment[0] = *s;
	s = data->Comment;
	notend = 1;
	n = 0;
	while (notend) {
	    s2 = data->Ecmt;
	    while (*s != *s2 && c != EOF) {
		c = Getc(data, file);
		if (n == XPMMAXCMTLEN - 1)  { /* forget it */
		    s = data->Comment;
		    n = 0;
		}
		*++s = c;
		n++;
	    }
	    data->CommentLength = n;
	    do {
		c = Getc(data, file);
		if (n == XPMMAXCMTLEN - 1)  { /* forget it */
		    s = data->Comment;
		    n = 0;
		}
		*++s = c;
		n++;
		s2++;
	    } while (c == *s2 && *s2 != '\0' && c != EOF);
	    if (*s2 == '\0') {
		/* this is the end of the comment */
		notend = 0;
		Ungetc(data, *s, file);
	    }
	}
	return 0;
    }
}

/*
 * skip to the end of the current string and the beginning of the next one
 */
int
xpmNextString(data)
    xpmData *data;
{
    if (!data->type)
	data->cptr = (data->stream.data)[++data->line];
    else if (data->type == XPMBUFFER) {
	register char c;

	/* get to the end of the current string */
	if (data->Eos)
	    while ((c = *data->cptr++) && c != data->Eos);

	/*
	 * then get to the beginning of the next string looking for possible
	 * comment
	 */
	if (data->Bos) {
	    while ((c = *data->cptr++) && c != data->Bos)
		if (data->Bcmt && c == data->Bcmt[0])
		    ParseComment(data);
	} else if (data->Bcmt) {	/* XPM2 natural */
	    while ((c = *data->cptr++) == data->Bcmt[0])
		ParseComment(data);
	    data->cptr--;
	}
    } else {
	register int c;
	FILE *file = data->stream.file;

	/* get to the end of the current string */
	if (data->Eos)
	    while ((c = Getc(data, file)) != data->Eos && c != EOF);

	/*
	 * then get to the beginning of the next string looking for possible
	 * comment
	 */
	if (data->Bos) {
	    while ((c = Getc(data, file)) != data->Bos && c != EOF)
		if (data->Bcmt && c == data->Bcmt[0])
		    ParseComment(data);

	} else if (data->Bcmt) {	/* XPM2 natural */
	    while ((c = Getc(data, file)) == data->Bcmt[0])
		ParseComment(data);
	    Ungetc(data, c, file);
	}
    }
    return 0;
}


/*
 * skip whitespace and return the following word
 */
unsigned int
xpmNextWord(data, buf, buflen)
    xpmData *data;
    char *buf;
    unsigned int buflen;
{
    register unsigned int n = 0;
    int c;

    if (!data->type || data->type == XPMBUFFER) {
	while (isspace(c = *data->cptr) && c != data->Eos)
	    data->cptr++;
	do {
	    c = *data->cptr++;
	    *buf++ = c;
	    n++;
	} while (!isspace(c) && c != data->Eos && n < buflen);
	n--;
	data->cptr--;
    } else {
	FILE *file = data->stream.file;

	while ((c = Getc(data, file)) != EOF && isspace(c) && c != data->Eos);
	while (!isspace(c) && c != data->Eos && c != EOF && n < buflen) {
	    *buf++ = c;
	    n++;
	    c = Getc(data, file);
	}
	Ungetc(data, c, file);
    }
    return (n);
}

/*
 * skip whitespace and compute the following unsigned int,
 * returns 1 if one is found and 0 if not
 */
int
xpmNextUI(data, ui_return)
    xpmData *data;
    unsigned int *ui_return;
{
    char buf[BUFSIZ];
    int l;

    l = xpmNextWord(data, buf, BUFSIZ);
    return xpmatoui(buf, l, ui_return);
}

/*
 * return end of string - WARNING: malloc!
 */
int
xpmGetString(data, sptr, l)
    xpmData *data;
    char **sptr;
    unsigned int *l;
{
    unsigned int i, n = 0;
    int c;
    char *p = NULL, *q, buf[BUFSIZ];

    if (!data->type || data->type == XPMBUFFER) {
	if (data->cptr) {
	    char *start = data->cptr;
	    while ((c = *data->cptr) && c != data->Eos)
		data->cptr++;
	    n = data->cptr - start + 1;
	    p = (char *) XpmMalloc(n);
	    if (!p)
		return (XpmNoMemory);
	    strncpy(p, start, n);
	    if (data->type)		/* XPMBUFFER */
		p[n - 1] = '\0';
	}
    } else {
	FILE *file = data->stream.file;

	if ((c = Getc(data, file)) == EOF)
	    return (XpmFileInvalid);

	i = 0;
	q = buf;
	p = (char *) XpmMalloc(1);
	while (c != data->Eos && c != EOF) {
	    if (i == BUFSIZ) {
		/* get to the end of the buffer */
		/* malloc needed memory */
		q = (char *) XpmRealloc(p, n + i);
		if (!q) {
		    XpmFree(p);
		    return (XpmNoMemory);
		}
		p = q;
		q += n;
		/* and copy what we already have */
		strncpy(q, buf, i);
		n += i;
		i = 0;
		q = buf;
	    }
	    *q++ = c;
	    i++;
	    c = Getc(data, file);
	}
	if (c == EOF) {
	    XpmFree(p);
	    return (XpmFileInvalid);
	}
	if (n + i != 0) {
	    /* malloc needed memory */
	    q = (char *) XpmRealloc(p, n + i + 1);
	    if (!q) {
		XpmFree(p);
		return (XpmNoMemory);
	    }
	    p = q;
	    q += n;
	    /* and copy the buffer */
	    strncpy(q, buf, i);
	    n += i;
	    p[n++] = '\0';
	} else {
	    *p = '\0';
	    n = 1;
	}
	Ungetc(data, c, file);
    }
    *sptr = p;
    *l = n;
    return (XpmSuccess);
}

/*
 * get the current comment line
 */
int
xpmGetCmt(data, cmt)
    xpmData *data;
    char **cmt;
{
    if (!data->type)
	*cmt = NULL;
    else if (data->CommentLength) {
	*cmt = (char *) XpmMalloc(data->CommentLength + 1);
	strncpy(*cmt, data->Comment, data->CommentLength);
	(*cmt)[data->CommentLength] = '\0';
	data->CommentLength = 0;
    } else
	*cmt = NULL;
    return 0;
}

xpmDataType xpmDataTypes[] =
{
    "", "!", "\n", '\0', '\n', "", "", "", "",	/* Natural type */
    "C", "/*", "*/", '"', '"', ",\n", "static char *", "[] = {\n", "};\n",
    "Lisp", ";", "\n", '"', '"', "\n", "(setq ", " '(\n", "))\n",
#ifdef VMS
    NULL
#else
    NULL, NULL, NULL, 0, 0, NULL, NULL, NULL, NULL
#endif
};

/*
 * parse xpm header
 */
int
xpmParseHeader(data)
    xpmData *data;
{
    char buf[BUFSIZ];
    int l, n = 0;

    if (data->type) {
	data->Bos = '\0';
	data->Eos = '\n';
	data->Bcmt = data->Ecmt = NULL;
	l = xpmNextWord(data, buf, BUFSIZ);
	if (l == 7 && !strncmp("#define", buf, 7)) {
	    /* this maybe an XPM 1 file */
	    char *ptr;

	    l = xpmNextWord(data, buf, BUFSIZ);
	    if (!l)
		return (XpmFileInvalid);
	    buf[l] = '\0';
	    ptr = rindex(buf, '_');
	    if (!ptr || strncmp("_format", ptr, l - (ptr - buf)))
		return XpmFileInvalid;
	    /* this is definitely an XPM 1 file */
	    data->format = 1;
	    n = 1;			/* handle XPM1 as mainly XPM2 C */
	} else {

	    /*
	     * skip the first word, get the second one, and see if this is
	     * XPM 2 or 3
	     */
	    l = xpmNextWord(data, buf, BUFSIZ);
	    if ((l == 3 && !strncmp("XPM", buf, 3)) ||
		(l == 4 && !strncmp("XPM2", buf, 4))) {
		if (l == 3)
		    n = 1;		/* handle XPM as XPM2 C */
		else {
		    /* get the type key word */
		    l = xpmNextWord(data, buf, BUFSIZ);

		    /*
		     * get infos about this type
		     */
		    while (xpmDataTypes[n].type
			   && strncmp(xpmDataTypes[n].type, buf, l))
			n++;
		}
		data->format = 0;
	    } else
		/* nope this is not an XPM file */
		return XpmFileInvalid;
	}
	if (xpmDataTypes[n].type) {
	    if (n == 0) {		/* natural type */
		data->Bcmt = xpmDataTypes[n].Bcmt;
		data->Ecmt = xpmDataTypes[n].Ecmt;
		xpmNextString(data);	/* skip the end of the headerline */
		data->Bos = xpmDataTypes[n].Bos;
		data->Eos = xpmDataTypes[n].Eos;
	    } else {
		data->Bcmt = xpmDataTypes[n].Bcmt;
		data->Ecmt = xpmDataTypes[n].Ecmt;
		if (!data->format) {	/* XPM 2 or 3 */
		    data->Bos = xpmDataTypes[n].Bos;
		    data->Eos = '\0';
		    /* get to the beginning of the first string */
		    xpmNextString(data);
		    data->Eos = xpmDataTypes[n].Eos;
		} else			/* XPM 1 skip end of line */
		    xpmNextString(data);
	    }
	} else
	    /* we don't know about that type of XPM file... */
	    return XpmFileInvalid;
    }
    return XpmSuccess;
}
Commit	Line	Data
b81d8cfc JS	1	/*
	2	* Copyright (C) 1989-95 GROUPE BULL
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
	5	* of this software and associated documentation files (the "Software"), to
	6	* deal in the Software without restriction, including without limitation the
	7	* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
	8	* sell copies of the Software, and to permit persons to whom the Software is
	9	* furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
	18	* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	19	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
	20	*
	21	* Except as contained in this notice, the name of GROUPE BULL shall not be
	22	* used in advertising or otherwise to promote the sale, use or other dealings
	23	* in this Software without prior written authorization from GROUPE BULL.
	24	*/
	25
	26	/*****************************************************************************\
	27	* data.c: *
	28	* *
	29	* XPM library *
	30	* IO utilities *
	31	* *
	32	* Developed by Arnaud Le Hors *
	33	\*****************************************************************************/
	34
	35	#ifndef CXPMPROG
	36	/* Official version number */
	37	static char *RCS_Version = "$XpmVersion: 3.4k $";
	38
	39	/* Internal version number */
	40	static char *RCS_Id = "$Id$";
	41
	42	#include "XpmI.h"
	43	#endif
	44	#include <ctype.h>
	45
	46	#ifndef CXPMPROG
	47	#define Getc(data, file) getc(file)
	48	#define Ungetc(data, c, file) ungetc(c, file)
	49	#endif
	50
	51	static int
	52	ParseComment(data)
	53	xpmData *data;
	54	{
	55	if (data->type == XPMBUFFER) {
	56	register char c;
	57	register unsigned int n = 0;
	58	unsigned int notend;
	59	char s, s2;
	60
	61	s = data->Comment;
	62	*s = data->Bcmt[0];
	63
	64	/* skip the string beginning comment */
65	s2 = data->Bcmt;
66	do {
67	c = *data->cptr++;
68	*++s = c;
69	n++;
70	s2++;
71	} while (c == s2 && s2 != '\0' && c);
72
73	if (*s2 != '\0') {
74	/* this wasn't the beginning of a comment */
75	data->cptr -= n;
76	return 0;
77	}
78	/* store comment */
79	data->Comment[0] = *s;
80	s = data->Comment;
81	notend = 1;
82	n = 0;
83	while (notend) {
84	s2 = data->Ecmt;
85	while (s != s2 && c) {
86	c = *data->cptr++;
87	if (n == XPMMAXCMTLEN - 1) { /* forget it */
88	s = data->Comment;
89	n = 0;
90	}
91	*++s = c;
92	n++;
93	}
94	data->CommentLength = n;
95	do {
96	c = *data->cptr++;
97	if (n == XPMMAXCMTLEN - 1) { /* forget it */
98	s = data->Comment;
99	n = 0;
100	}
101	*++s = c;
102	n++;
103	s2++;
104	} while (c == s2 && s2 != '\0' && c);
105	if (*s2 == '\0') {
106	/* this is the end of the comment */
107	notend = 0;
108	data->cptr--;
109	}
110	}
111	return 0;
112	} else {
113	FILE *file = data->stream.file;
114	register int c;
115	register unsigned int n = 0, a;
116	unsigned int notend;
117	char s, s2;
118
119	s = data->Comment;
120	*s = data->Bcmt[0];
121
122	/* skip the string beginning comment */
123	s2 = data->Bcmt;
124	do {
125	c = Getc(data, file);
126	*++s = c;
127	n++;
128	s2++;
129	} while (c == s2 && s2 != '\0' && c != EOF);
130
131	if (*s2 != '\0') {
132	/* this wasn't the beginning of a comment */
133	/* put characters back in the order that we got them */
134	for (a = n; a > 0; a--, s--)
135	Ungetc(data, *s, file);
136	return 0;
137	}
138	/* store comment */
139	data->Comment[0] = *s;
140	s = data->Comment;
141	notend = 1;
142	n = 0;
143	while (notend) {
144	s2 = data->Ecmt;
145	while (s != s2 && c != EOF) {
146	c = Getc(data, file);
147	if (n == XPMMAXCMTLEN - 1) { /* forget it */
148	s = data->Comment;
149	n = 0;
150	}
151	*++s = c;
152	n++;
153	}
154	data->CommentLength = n;
155	do {
156	c = Getc(data, file);
157	if (n == XPMMAXCMTLEN - 1) { /* forget it */
158	s = data->Comment;
159	n = 0;
160	}
161	*++s = c;
162	n++;
163	s2++;
164	} while (c == s2 && s2 != '\0' && c != EOF);
165	if (*s2 == '\0') {
166	/* this is the end of the comment */
167	notend = 0;
168	Ungetc(data, *s, file);
169	}
170	}
171	return 0;
172	}
173	}
174
175	/*
176	* skip to the end of the current string and the beginning of the next one
177	*/
178	int
179	xpmNextString(data)
180	xpmData *data;
181	{
182	if (!data->type)
183	data->cptr = (data->stream.data)[++data->line];
184	else if (data->type == XPMBUFFER) {
185	register char c;
186
187	/* get to the end of the current string */
188	if (data->Eos)
189	while ((c = *data->cptr++) && c != data->Eos);
190
191	/*
192	* then get to the beginning of the next string looking for possible
193	* comment
194	*/
195	if (data->Bos) {
196	while ((c = *data->cptr++) && c != data->Bos)
197	if (data->Bcmt && c == data->Bcmt[0])
198	ParseComment(data);
199	} else if (data->Bcmt) { /* XPM2 natural */
200	while ((c = *data->cptr++) == data->Bcmt[0])
201	ParseComment(data);
202	data->cptr--;
203	}
204	} else {
205	register int c;
206	FILE *file = data->stream.file;
207
208	/* get to the end of the current string */
209	if (data->Eos)
210	while ((c = Getc(data, file)) != data->Eos && c != EOF);
211
212	/*
213	* then get to the beginning of the next string looking for possible
214	* comment
215	*/
216	if (data->Bos) {
217	while ((c = Getc(data, file)) != data->Bos && c != EOF)
218	if (data->Bcmt && c == data->Bcmt[0])
219	ParseComment(data);
220
221	} else if (data->Bcmt) { /* XPM2 natural */
222	while ((c = Getc(data, file)) == data->Bcmt[0])
223	ParseComment(data);
224	Ungetc(data, c, file);
225	}
226	}
227	return 0;
228	}
229
230
231	/*
232	* skip whitespace and return the following word
233	*/
234	unsigned int
235	xpmNextWord(data, buf, buflen)
236	xpmData *data;
237	char *buf;
238	unsigned int buflen;
239	{
240	register unsigned int n = 0;
241	int c;
242
243	if (!data->type \|\| data->type == XPMBUFFER) {
244	while (isspace(c = *data->cptr) && c != data->Eos)
245	data->cptr++;
246	do {
247	c = *data->cptr++;
248	*buf++ = c;
249	n++;
250	} while (!isspace(c) && c != data->Eos && n < buflen);
251	n--;
252	data->cptr--;
253	} else {
254	FILE *file = data->stream.file;
255
256	while ((c = Getc(data, file)) != EOF && isspace(c) && c != data->Eos);
257	while (!isspace(c) && c != data->Eos && c != EOF && n < buflen) {
258	*buf++ = c;
259	n++;
260	c = Getc(data, file);
261	}
262	Ungetc(data, c, file);
263	}
264	return (n);
265	}
266
267	/*
268	* skip whitespace and compute the following unsigned int,
269	* returns 1 if one is found and 0 if not
270	*/
271	int
272	xpmNextUI(data, ui_return)
273	xpmData *data;
274	unsigned int *ui_return;
275	{
276	char buf[BUFSIZ];
277	int l;
278
279	l = xpmNextWord(data, buf, BUFSIZ);
280	return xpmatoui(buf, l, ui_return);
281	}
282
283	/*
284	* return end of string - WARNING: malloc!
285	*/
286	int
287	xpmGetString(data, sptr, l)
288	xpmData *data;
289	char **sptr;
290	unsigned int *l;
291	{
292	unsigned int i, n = 0;
293	int c;
294	char p = NULL, q, buf[BUFSIZ];
295
296	if (!data->type \|\| data->type == XPMBUFFER) {
297	if (data->cptr) {
298	char *start = data->cptr;
299	while ((c = *data->cptr) && c != data->Eos)
300	data->cptr++;
301	n = data->cptr - start + 1;
302	p = (char *) XpmMalloc(n);
303	if (!p)
304	return (XpmNoMemory);
305	strncpy(p, start, n);
306	if (data->type) /* XPMBUFFER */
307	p[n - 1] = '\0';
308	}
309	} else {
310	FILE *file = data->stream.file;
311
312	if ((c = Getc(data, file)) == EOF)
313	return (XpmFileInvalid);
314
315	i = 0;
316	q = buf;
317	p = (char *) XpmMalloc(1);
318	while (c != data->Eos && c != EOF) {
319	if (i == BUFSIZ) {
320	/* get to the end of the buffer */
321	/* malloc needed memory */
322	q = (char *) XpmRealloc(p, n + i);
323	if (!q) {
324	XpmFree(p);
325	return (XpmNoMemory);
326	}
327	p = q;
328	q += n;
329	/* and copy what we already have */
330	strncpy(q, buf, i);
331	n += i;
332	i = 0;
333	q = buf;
334	}
335	*q++ = c;
336	i++;
337	c = Getc(data, file);
338	}
339	if (c == EOF) {
340	XpmFree(p);
341	return (XpmFileInvalid);
342	}
343	if (n + i != 0) {
344	/* malloc needed memory */
345	q = (char *) XpmRealloc(p, n + i + 1);
346	if (!q) {
347	XpmFree(p);
348	return (XpmNoMemory);
349	}
350	p = q;
351	q += n;
352	/* and copy the buffer */
353	strncpy(q, buf, i);
354	n += i;
355	p[n++] = '\0';
356	} else {
357	*p = '\0';
358	n = 1;
359	}
360	Ungetc(data, c, file);
361	}
362	*sptr = p;
363	*l = n;
364	return (XpmSuccess);
365	}
366
367	/*
368	* get the current comment line
369	*/
370	int
371	xpmGetCmt(data, cmt)
372	xpmData *data;
373	char **cmt;
374	{
375	if (!data->type)
376	*cmt = NULL;
377	else if (data->CommentLength) {
378	cmt = (char ) XpmMalloc(data->CommentLength + 1);
379	strncpy(*cmt, data->Comment, data->CommentLength);
380	(*cmt)[data->CommentLength] = '\0';
381	data->CommentLength = 0;
382	} else
383	*cmt = NULL;
384	return 0;
385	}
386
387	xpmDataType xpmDataTypes[] =
388	{
389	"", "!", "\n", '\0', '\n', "", "", "", "", /* Natural type */
390	"C", "/", "/", '"', '"', ",\n", "static char *", "[] = {\n", "};\n",
391	"Lisp", ";", "\n", '"', '"', "\n", "(setq ", " '(\n", "))\n",
392	#ifdef VMS
393	NULL
394	#else
395	NULL, NULL, NULL, 0, 0, NULL, NULL, NULL, NULL
396	#endif
397	};
398
399	/*
400	* parse xpm header
401	*/
402	int
403	xpmParseHeader(data)
404	xpmData *data;
405	{
406	char buf[BUFSIZ];
407	int l, n = 0;
408
409	if (data->type) {
410	data->Bos = '\0';
411	data->Eos = '\n';
412	data->Bcmt = data->Ecmt = NULL;
413	l = xpmNextWord(data, buf, BUFSIZ);
414	if (l == 7 && !strncmp("#define", buf, 7)) {
415	/* this maybe an XPM 1 file */
416	char *ptr;
417
418	l = xpmNextWord(data, buf, BUFSIZ);
419	if (!l)
420	return (XpmFileInvalid);
421	buf[l] = '\0';
422	ptr = rindex(buf, '_');
423	if (!ptr \|\| strncmp("_format", ptr, l - (ptr - buf)))
424	return XpmFileInvalid;
425	/* this is definitely an XPM 1 file */
426	data->format = 1;
427	n = 1; /* handle XPM1 as mainly XPM2 C */
428	} else {
429
430	/*
431	* skip the first word, get the second one, and see if this is
432	* XPM 2 or 3
433	*/
434	l = xpmNextWord(data, buf, BUFSIZ);
435	if ((l == 3 && !strncmp("XPM", buf, 3)) \|\|
436	(l == 4 && !strncmp("XPM2", buf, 4))) {
437	if (l == 3)
438	n = 1; /* handle XPM as XPM2 C */
439	else {
440	/* get the type key word */
441	l = xpmNextWord(data, buf, BUFSIZ);
442
443	/*
444	* get infos about this type
445	*/
446	while (xpmDataTypes[n].type
447	&& strncmp(xpmDataTypes[n].type, buf, l))
448	n++;
449	}
450	data->format = 0;
451	} else
452	/* nope this is not an XPM file */
453	return XpmFileInvalid;
454	}
455	if (xpmDataTypes[n].type) {
456	if (n == 0) { /* natural type */
457	data->Bcmt = xpmDataTypes[n].Bcmt;
458	data->Ecmt = xpmDataTypes[n].Ecmt;
459	xpmNextString(data); /* skip the end of the headerline */
460	data->Bos = xpmDataTypes[n].Bos;
461	data->Eos = xpmDataTypes[n].Eos;
462	} else {
463	data->Bcmt = xpmDataTypes[n].Bcmt;
464	data->Ecmt = xpmDataTypes[n].Ecmt;
465	if (!data->format) { /* XPM 2 or 3 */
466	data->Bos = xpmDataTypes[n].Bos;
467	data->Eos = '\0';
468	/* get to the beginning of the first string */
469	xpmNextString(data);
470	data->Eos = xpmDataTypes[n].Eos;
471	} else /* XPM 1 skip end of line */
472	xpmNextString(data);
473	}
474	} else
475	/* we don't know about that type of XPM file... */
476	return XpmFileInvalid;
477	}
478	return XpmSuccess;
479	}