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
	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	}