Added libXpm

1 files changed, 480 insertions, 0 deletions

diff --git a/libXpm/src/data.c b/libXpm/src/data.c
new file mode 100644
index 000000000..94caa61bf
--- /dev/null
+++ b/libXpm/src/data.c
@@ -0,0 +1,480 @@
+/*
+ * 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                                                *
+\*****************************************************************************/
+/* $XFree86: xc/extras/Xpm/lib/data.c,v 1.3 2001/10/28 03:32:10 tsi Exp $ */
+
+/* October 2004, source code review by Thomas Biege <thomas@suse.de> */
+
+#ifndef CXPMPROG
+#if 0
+/* Official version number */
+static char *RCS_Version = "$XpmVersion: 3.4k $";
+
+/* Internal version number */
+static char *RCS_Id = "Id: xpm.shar,v 3.71 1998/03/19 19:47:14 lehors Exp $";
+#endif
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#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(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(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(
+    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); /* this returns bytes read + 1 */
+}
+
+/*
+ * skip whitespace and compute the following unsigned int,
+ * returns 1 if one is found and 0 if not
+ */
+int
+xpmNextUI(
+    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(
+    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(
+    xpmData	 *data,
+    char	**cmt)
+{
+    if (!data->type)
+	*cmt = NULL;
+    else if (data->CommentLength != 0 && data->CommentLength < UINT_MAX - 1) {
+	if( (*cmt = (char *) XpmMalloc(data->CommentLength + 1)) == NULL)
+		return XpmNoMemory;
+	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"},
+    {NULL, NULL, NULL, 0, 0, NULL, NULL, NULL, NULL}
+};
+
+/*
+ * parse xpm header
+ */
+int
+xpmParseHeader(xpmData *data)
+{
+    char buf[BUFSIZ+1] = {0};
+    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 = strrchr(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;
+}