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ncsa-mosaic/src/xpmread.c

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/****************************************************************************
* NCSA Mosaic for the X Window System *
* Software Development Group *
* National Center for Supercomputing Applications *
* University of Illinois at Urbana-Champaign *
* 605 E. Springfield, Champaign IL 61820 *
* mosaic@ncsa.uiuc.edu *
* *
* Copyright (C) 1993, Board of Trustees of the University of Illinois *
* *
* NCSA Mosaic software, both binary and source (hereafter, Software) is *
* copyrighted by The Board of Trustees of the University of Illinois *
* (UI), and ownership remains with the UI. *
* *
* The UI grants you (hereafter, Licensee) a license to use the Software *
* for academic, research and internal business purposes only, without a *
* fee. Licensee may distribute the binary and source code (if released) *
* to third parties provided that the copyright notice and this statement *
* appears on all copies and that no charge is associated with such *
* copies. *
* *
* Licensee may make derivative works. However, if Licensee distributes *
* any derivative work based on or derived from the Software, then *
* Licensee will (1) notify NCSA regarding its distribution of the *
* derivative work, and (2) clearly notify users that such derivative *
* work is a modified version and not the original NCSA Mosaic *
* distributed by the UI. *
* *
* Any Licensee wishing to make commercial use of the Software should *
* contact the UI, c/o NCSA, to negotiate an appropriate license for such *
* commercial use. Commercial use includes (1) integration of all or *
* part of the source code into a product for sale or license by or on *
* behalf of Licensee to third parties, or (2) distribution of the binary *
* code or source code to third parties that need it to utilize a *
* commercial product sold or licensed by or on behalf of Licensee. *
* *
* UI MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THIS SOFTWARE FOR *
* ANY PURPOSE. IT IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED *
* WARRANTY. THE UI SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY THE *
* USERS OF THIS SOFTWARE. *
* *
* By using or copying this Software, Licensee agrees to abide by the *
* copyright law and all other applicable laws of the U.S. including, but *
* not limited to, export control laws, and the terms of this license. *
* UI shall have the right to terminate this license immediately by *
* written notice upon Licensee's breach of, or non-compliance with, any *
* of its terms. Licensee may be held legally responsible for any *
* copyright infringement that is caused or encouraged by Licensee's *
* failure to abide by the terms of this license. *
* *
* Comments and questions are welcome and can be sent to *
* mosaic-x@ncsa.uiuc.edu. *
****************************************************************************/
#include "../config.h"
/*
* The following XPM reading code was based on the libXpm code, which I
* am free to use as long as I include the following copyright:
*/
/*
* Copyright 1990-93 GROUPE BULL
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of GROUPE BULL not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission. GROUPE BULL makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* GROUPE BULL disclaims all warranties with regard to this software,
* including all implied warranties of merchantability and fitness,
* in no event shall GROUPE BULL be liable for any special,
* indirect or consequential damages or any damages
* whatsoever resulting from loss of use, data or profits,
* whether in an action of contract, negligence or other tortious
* action, arising out of or in connection with the use
* or performance of this software.
*
*/
#include <sys/time.h>
struct timeval Tv;
struct timezone Tz;
#include "mosaic.h"
#include "xpmread.h"
#include <X11/Xos.h>
#include "xpm.h"
/*for memset*/
#include <memory.h>
extern Display *dsp;
extern int installed_colormap;
extern Colormap installed_cmap;
#ifndef DISABLE_TRACE
extern int srcTrace;
#endif
char *xpmColorKeys[] = {
"s", /* key #1: symbol */
"m", /* key #2: mono visual */
"g4", /* key #3: 4 grays visual */
"g", /* key #4: gray visual */
"c", /* key #5: color visual */
};
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
};
/*
* Free the computed color table
*/
void
xpmFreeColorTable_(colorTable, ncolors)
char ***colorTable;
int ncolors;
{
int a, b;
char ***ct, **cts;
if (colorTable) {
for (a = 0, ct = colorTable; a < ncolors; a++, ct++)
if (*ct) {
for (b = 0, cts = *ct; b <= NKEYS; b++, cts++)
if (*cts)
XpmFree(*cts);
XpmFree(*ct);
}
XpmFree(colorTable);
}
}
/*
* Intialize the xpmInternAttrib pointers to Null to know
* which ones must be freed later on.
*/
void
xpmInitInternAttrib(attrib)
xpmInternAttrib *attrib;
{
attrib->ncolors = 0;
attrib->colorTable = NULL;
attrib->pixelindex = NULL;
attrib->xcolors = NULL;
attrib->colorStrings = NULL;
attrib->mask_pixel = UNDEF_PIXEL;
}
/*
* Free the xpmInternAttrib pointers which have been allocated
*/
void
xpmFreeInternAttrib(attrib)
xpmInternAttrib *attrib;
{
unsigned int a, ncolors;
char **sptr;
if (attrib->colorTable)
xpmFreeColorTable_(attrib->colorTable, attrib->ncolors);
if (attrib->pixelindex)
XpmFree(attrib->pixelindex);
if (attrib->xcolors)
XpmFree(attrib->xcolors);
if (attrib->colorStrings) {
ncolors = attrib->ncolors;
for (a = 0, sptr = attrib->colorStrings; a < ncolors; a++, sptr++)
if (*sptr)
XpmFree(*sptr);
XpmFree(attrib->colorStrings);
}
}
/*
* open the given file to be read as an xpmData which is returned.
*/
int
xpmReadFile(filename, mdata)
char *filename;
xpmData *mdata;
{
#ifdef ZPIPE
char *compressfile, buf[BUFSIZ];
struct stat status;
#endif
if (!filename) {
mdata->stream.file = (stdin);
mdata->type = XPMFILE;
} else {
#ifdef ZPIPE
if ((strlen(filename) > 2) &&
!strcmp(".Z", filename + (strlen(filename) - 2))) {
mdata->type = XPMPIPE;
sprintf(buf, "uncompress -c %s", filename);
if (!(mdata->stream.file = popen(buf, "r")))
return (XpmOpenFailed);
} else if ((strlen(filename) > 2) &&
!strcmp(".z", filename + (strlen(filename) - 2))) {
mdata->type = XPMPIPE;
sprintf(buf, "gunzip -c %s", filename);
if (!(mdata->stream.file = popen(buf, "r")))
return (XpmOpenFailed);
} else {
if (!(compressfile = (char *) XpmMalloc(strlen(filename) + 3)))
return (XpmNoMemory);
strcpy(compressfile, filename);
strcat(compressfile, ".Z");
if (!stat(compressfile, &status)) {
sprintf(buf, "uncompress -c %s", compressfile);
if (!(mdata->stream.file = popen(buf, "r"))) {
XpmFree(compressfile);
return (XpmOpenFailed);
}
mdata->type = XPMPIPE;
} else {
strcpy(compressfile, filename);
strcat(compressfile, ".z");
if (!stat(compressfile, &status)) {
sprintf(buf, "gunzip -c %s", compressfile);
if (!(mdata->stream.file = popen(buf, "r"))) {
XpmFree(compressfile);
return (XpmOpenFailed);
}
mdata->type = XPMPIPE;
} else {
#endif
if (!(mdata->stream.file = fopen(filename, "r"))) {
#ifdef ZPIPE
XpmFree(compressfile);
#endif
return (XpmOpenFailed);
}
mdata->type = XPMFILE;
#ifdef ZPIPE
}
}
XpmFree(compressfile);
}
#endif
}
mdata->CommentLength = 0;
return (XpmSuccess);
}
/*
* close the file related to the xpmData if any
*/
int
xpmDataClose(mdata)
xpmData *mdata;
{
switch (mdata->type) {
case XPMARRAY:
case XPMBUFFER:
break;
case XPMFILE:
if (mdata->stream.file != (stdout) && mdata->stream.file != (stdin))
fclose(mdata->stream.file);
break;
#ifdef ZPIPE
case XPMPIPE:
pclose(mdata->stream.file);
break;
#endif
}
return 0;
}
static int
ParseComment(mdata)
xpmData *mdata;
{
if (mdata->type == XPMBUFFER) {
register char c;
register unsigned int n = 0;
unsigned int notend;
char *s, *s2;
s = mdata->Comment;
*s = mdata->Bcmt[0];
/* skip the string beginning comment */
s2 = mdata->Bcmt;
do {
c = *mdata->cptr++;
*++s = c;
n++;
s2++;
} while (c == *s2 && *s2 != '\0' && c && c != mdata->Bos);
if (*s2 != '\0') {
/* this wasn't the beginning of a comment */
mdata->cptr -= n;
return 0;
}
/* store comment */
mdata->Comment[0] = *s;
s = mdata->Comment;
notend = 1;
n = 0;
while (notend) {
s2 = mdata->Ecmt;
while (*s != *s2 && c && c != mdata->Bos) {
c = *mdata->cptr++;
*++s = c;
n++;
}
mdata->CommentLength = n;
do {
c = *mdata->cptr++;
n++;
*++s = c;
s2++;
} while (c == *s2 && *s2 != '\0' && c && c != mdata->Bos);
if (*s2 == '\0') {
/* this is the end of the comment */
notend = 0;
mdata->cptr--;
}
}
return 0;
} else {
FILE *file = mdata->stream.file;
register int c;
register unsigned int n = 0, a;
unsigned int notend;
char *s, *s2;
s = mdata->Comment;
*s = mdata->Bcmt[0];
/* skip the string beginning comment */
s2 = mdata->Bcmt;
do {
c = getc(file);
*++s = c;
n++;
s2++;
} while (c == *s2 && *s2 != '\0'
&& c != EOF && c != mdata->Bos);
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(*s, file);
return 0;
}
/* store comment */
mdata->Comment[0] = *s;
s = mdata->Comment;
notend = 1;
n = 0;
while (notend) {
s2 = mdata->Ecmt;
while (*s != *s2 && c != EOF && c != mdata->Bos) {
c = getc(file);
*++s = c;
n++;
}
mdata->CommentLength = n;
do {
c = getc(file);
n++;
*++s = c;
s2++;
} while (c == *s2 && *s2 != '\0'
&& c != EOF && c != mdata->Bos);
if (*s2 == '\0') {
/* this is the end of the comment */
notend = 0;
ungetc(*s, file);
}
}
return 0;
}
}
/*
* skip to the end of the current string and the beginning of the next one
*/
int
xpmNextString(mdata)
xpmData *mdata;
{
if (!mdata->type)
mdata->cptr = (mdata->stream.data)[++mdata->line];
else if (mdata->type == XPMBUFFER) {
register char c;
/* get to the end of the current string */
if (mdata->Eos)
while ((c = *mdata->cptr++) && c != mdata->Eos);
/*
* then get to the beginning of the next string looking for possible
* comment
*/
if (mdata->Bos) {
while ((c = *mdata->cptr++) && c != mdata->Bos)
if (mdata->Bcmt && c == mdata->Bcmt[0])
ParseComment(mdata);
} else if (mdata->Bcmt) { /* XPM2 natural */
while ((c = *mdata->cptr++) == mdata->Bcmt[0])
ParseComment(mdata);
mdata->cptr--;
}
} else {
register int c;
FILE *file = mdata->stream.file;
/* get to the end of the current string */
if (mdata->Eos)
while ((c = getc(file)) != mdata->Eos && c != EOF);
/*
* then get to the beginning of the next string looking for possible
* comment
*/
if (mdata->Bos) {
while ((c = getc(file)) != mdata->Bos && c != EOF)
if (mdata->Bcmt && c == mdata->Bcmt[0])
ParseComment(mdata);
} else if (mdata->Bcmt) { /* XPM2 natural */
while ((c = getc(file)) == mdata->Bcmt[0])
ParseComment(mdata);
ungetc(c, file);
}
}
return 0;
}
unsigned int
atoui(p, l, ui_return)
register char *p;
unsigned int l;
unsigned int *ui_return;
{
register int n, i;
n = 0;
for (i = 0; i < l; i++)
if (*p >= '0' && *p <= '9')
n = n * 10 + *p++ - '0';
else
break;
if (i != 0 && i == l) {
*ui_return = n;
return 1;
} else
return 0;
}
static int
ParseValues(data, width, height, ncolors, cpp,
x_hotspot, y_hotspot, hotspot, extensions)
xpmData *data;
unsigned int *width, *height, *ncolors, *cpp;
unsigned int *x_hotspot, *y_hotspot, *hotspot;
unsigned int *extensions;
{
unsigned int l;
char buf[BUFSIZ];
/*
* read values: width, height, ncolors, chars_per_pixel
*/
if (!(xpmNextUI(data, width) && xpmNextUI(data, height)
&& xpmNextUI(data, ncolors) && xpmNextUI(data, cpp)))
return (XpmFileInvalid);
/*
* read optional information (hotspot and/or XPMEXT) if any
*/
l = xpmNextWord(data, buf);
if (l) {
*extensions = l == 6 && !strncmp("XPMEXT", buf, 6);
if (*extensions)
*hotspot = xpmNextUI(data, x_hotspot)
&& xpmNextUI(data, y_hotspot);
else {
*hotspot = atoui(buf, l, x_hotspot) && xpmNextUI(data, y_hotspot);
l = xpmNextWord(data, buf);
*extensions = l == 6 && !strncmp("XPMEXT", buf, 6);
}
}
return (XpmSuccess);
}
static int
ParseColors(data, ncolors, cpp, colorTablePtr, hashtable)
xpmData *data;
unsigned int ncolors;
unsigned int cpp;
char ****colorTablePtr; /* Jee, that's something! */
xpmHashTable *hashtable;
{
unsigned int key, l, a, b;
unsigned int curkey; /* current color key */
unsigned int lastwaskey; /* key read */
char buf[BUFSIZ];
char curbuf[BUFSIZ]; /* current buffer */
char ***ct, **cts, **sptr, *s;
char ***colorTable;
int ErrorStatus;
colorTable = (char ***) XpmCalloc(ncolors, sizeof(char **));
if (!colorTable)
return (XpmNoMemory);
for (a = 0, ct = colorTable; a < ncolors; a++, ct++) {
xpmNextString(data); /* skip the line */
cts = *ct = (char **) XpmCalloc((NKEYS + 1), sizeof(char *));
if (!cts) {
xpmFreeColorTable_(colorTable, ncolors);
return (XpmNoMemory);
}
/*
* read pixel value
*/
*cts = (char *) XpmMalloc(cpp + 1); /* + 1 for null terminated */
if (!*cts) {
xpmFreeColorTable_(colorTable, ncolors);
return (XpmNoMemory);
}
for (b = 0, s = *cts; b < cpp; b++, s++)
*s = xpmGetC(data);
*s = '\0';
/*
* store the string in the hashtable with its color index number
*/
if (USE_HASHTABLE) {
ErrorStatus = xpmHashIntern(hashtable, *cts, HashAtomData(a));
if (ErrorStatus != XpmSuccess) {
xpmFreeColorTable_(colorTable, ncolors);
return (ErrorStatus);
}
}
/*
* read color keys and values
*/
curkey = 0;
lastwaskey = 0;
while (l = xpmNextWord(data, buf)) {
if (!lastwaskey) {
for (key = 0, sptr = xpmColorKeys; key < NKEYS; key++, sptr++)
if ((strlen(*sptr) == l) && (!strncmp(*sptr, buf, l)))
break;
}
if (!lastwaskey && key < NKEYS) { /* open new key */
if (curkey) { /* flush string */
s = cts[curkey] = (char *) XpmMalloc(strlen(curbuf) + 1);
if (!s) {
xpmFreeColorTable_(colorTable, ncolors);
return (XpmNoMemory);
}
strcpy(s, curbuf);
}
curkey = key + 1; /* set new key */
*curbuf = '\0'; /* reset curbuf */
lastwaskey = 1;
} else {
if (!curkey) { /* key without value */
xpmFreeColorTable_(colorTable, ncolors);
return (XpmFileInvalid);
}
if (!lastwaskey)
strcat(curbuf, " ");/* append space */
buf[l] = '\0';
strcat(curbuf, buf); /* append buf */
lastwaskey = 0;
}
}
if (!curkey) { /* key without value */
xpmFreeColorTable_(colorTable, ncolors);
return (XpmFileInvalid);
}
s = cts[curkey] = (char *) XpmMalloc(strlen(curbuf) + 1);
if (!s) {
xpmFreeColorTable_(colorTable, ncolors);
return (XpmNoMemory);
}
strcpy(s, curbuf);
}
*colorTablePtr = colorTable;
return (XpmSuccess);
}
static int
ParsePixels(data, width, height, ncolors, cpp, colorTable, hashtable, pixels)
xpmData *data;
unsigned int width;
unsigned int height;
unsigned int ncolors;
unsigned int cpp;
char ***colorTable;
xpmHashTable *hashtable;
unsigned int **pixels;
{
unsigned int *iptr, *iptr2;
unsigned int a, x, y;
iptr2 = (unsigned int *) XpmMalloc(sizeof(unsigned int) * width * height);
if (!iptr2)
return (XpmNoMemory);
iptr = iptr2;
switch (cpp) {
case (1): /* Optimize for single character
* colors */
{
unsigned short colidx[256];
/* bzero(colidx, 256 * sizeof(short));*/
memset(colidx, 0, 256 * sizeof(short));
for (a = 0; a < ncolors; a++)
colidx[colorTable[a][0][0]] = a + 1;
for (y = 0; y < height; y++) {
xpmNextString(data);
for (x = 0; x < width; x++, iptr++) {
int idx = colidx[xpmGetC(data)];
if (idx != 0)
*iptr = idx - 1;
else {
XpmFree(iptr2);
return (XpmFileInvalid);
}
}
}
}
break;
case (2): /* Optimize for double character
* colors */
{
unsigned short cidx[256][256];
/* bzero(cidx, 256 * 256 * sizeof(short));*/
memset(cidx, 0, 256 * 256 * sizeof(short));
for (a = 0; a < ncolors; a++)
cidx[colorTable[a][0][0]][colorTable[a][0][1]] = a + 1;
for (y = 0; y < height; y++) {
xpmNextString(data);
for (x = 0; x < width; x++, iptr++) {
int cc1 = xpmGetC(data);
int idx = cidx[cc1][xpmGetC(data)];
if (idx != 0)
*iptr = idx - 1;
else {
XpmFree(iptr2);
return (XpmFileInvalid);
}
}
}
}
break;
default: /* Non-optimized case of long color
* names */
{
char *s;
char buf[BUFSIZ];
buf[cpp] = '\0';
if (USE_HASHTABLE) {
xpmHashAtom *slot;
for (y = 0; y < height; y++) {
xpmNextString(data);
for (x = 0; x < width; x++, iptr++) {
for (a = 0, s = buf; a < cpp; a++, s++)
*s = xpmGetC(data);
slot = xpmHashSlot(hashtable, buf);
if (!*slot) { /* no color matches */
XpmFree(iptr2);
return (XpmFileInvalid);
}
*iptr = HashColorIndex(slot);
}
}
} else {
for (y = 0; y < height; y++) {
xpmNextString(data);
for (x = 0; x < width; x++, iptr++) {
for (a = 0, s = buf; a < cpp; a++, s++)
*s = xpmGetC(data);
for (a = 0; a < ncolors; a++)
if (!strcmp(colorTable[a][0], buf))
break;
if (a == ncolors) { /* no color matches */
XpmFree(iptr2);
return (XpmFileInvalid);
}
*iptr = a;
}
}
}
}
break;
}
*pixels = iptr2;
return (XpmSuccess);
}
/*
* skip whitespace and return the following word
*/
unsigned int
xpmNextWord(mdata, buf)
xpmData *mdata;
char *buf;
{
register unsigned int n = 0;
int c;
if (!mdata)
return 0;
if (!mdata->type || mdata->type == XPMBUFFER) {
while (isspace(c = *mdata->cptr) && c != mdata->Eos)
mdata->cptr++;
do {
c = *mdata->cptr++;
*buf++ = c;
n++;
} while (!isspace(c) && c != mdata->Eos && (n < BUFSIZ));
n--;
mdata->cptr--;
} else {
FILE *file = mdata->stream.file;
while ((c = getc(file)) != EOF && isspace(c) && c != mdata->Eos);
while (!isspace(c) && c != mdata->Eos && c != EOF && (n < BUFSIZ)) {
*buf++ = c;
n++;
c = getc(file);
}
ungetc(c, file);
}
return (n);
}
/*
* skip whitespace and compute the following unsigned int,
* returns 1 if one is found and 0 if not
*/
int
xpmNextUI(mdata, ui_return)
xpmData *mdata;
unsigned int *ui_return;
{
char buf[BUFSIZ];
int l;
l = xpmNextWord(mdata, buf);
return atoui(buf, l, ui_return);
}
/*
* parse xpm header
*/
int
xpmParseHeader(mdata)
xpmData *mdata;
{
char buf[BUFSIZ];
int l, n = 0;
if (mdata->type) {
mdata->Bos = '\0';
mdata->Eos = '\n';
mdata->Bcmt = mdata->Ecmt = NULL;
xpmNextWord(mdata, buf); /* skip the first word */
l = xpmNextWord(mdata, buf); /* then get the second word */
if ((l == 3 && !strncmp("XPM", buf, 3)) ||
(l == 4 && !strncmp("XPM2", buf, 4))) {
if (l == 3)
n = 1; /* handle XPM as XPM2 C */
else {
l = xpmNextWord(mdata, buf); /* get the type key word */
/*
* get infos about this type
*/
while (xpmDataTypes[n].type
&& strncmp(xpmDataTypes[n].type, buf, l))
n++;
}
if (xpmDataTypes[n].type) {
if (n == 0) { /* natural type */
mdata->Bcmt = xpmDataTypes[n].Bcmt;
mdata->Ecmt = xpmDataTypes[n].Ecmt;
xpmNextString(mdata); /* skip the end of
* headerline */
mdata->Bos = xpmDataTypes[n].Bos;
} else {
xpmNextString(mdata); /* skip the end of
* headerline */
mdata->Bcmt = xpmDataTypes[n].Bcmt;
mdata->Ecmt = xpmDataTypes[n].Ecmt;
mdata->Bos = xpmDataTypes[n].Bos;
mdata->Eos = '\0';
xpmNextString(mdata); /* skip the assignment line */
}
mdata->Eos = xpmDataTypes[n].Eos;
} else
return XpmFileInvalid;
} else
return XpmFileInvalid;
}
return XpmSuccess;
}
/*
* get the current comment line
*/
int
xpmGetCmt(mdata, cmt)
xpmData *mdata;
char **cmt;
{
if (!mdata->type)
*cmt = NULL;
else if (mdata->CommentLength) {
*cmt = (char *) XpmMalloc(mdata->CommentLength + 1);
strncpy(*cmt, mdata->Comment, mdata->CommentLength);
(*cmt)[mdata->CommentLength] = '\0';
mdata->CommentLength = 0;
} else
*cmt = NULL;
return 0;
}
#undef RETURN
#define RETURN(status) \
{ if (colorTable) xpmFreeColorTable_(colorTable, ncolors); \
if (pixelindex) XpmFree(pixelindex); \
if (hints_cmt) XpmFree(hints_cmt); \
if (colors_cmt) XpmFree(colors_cmt); \
if (pixels_cmt) XpmFree(pixels_cmt); \
return(status); }
/*
* This function parses an Xpm file or data and store the found informations
* in an an xpmInternAttrib structure which is returned.
*/
int
xpmParseData(data, attrib_return, attributes)
xpmData *data;
xpmInternAttrib *attrib_return;
XpmAttributes *attributes;
{
/* variables to return */
unsigned int width, height, ncolors, cpp;
unsigned int x_hotspot, y_hotspot, hotspot = 0, extensions = 0;
char ***colorTable = NULL;
unsigned int *pixelindex = NULL;
char *hints_cmt = NULL;
char *colors_cmt = NULL;
char *pixels_cmt = NULL;
int ErrorStatus;
xpmHashTable hashtable;
/*
* parse the header
*/
ErrorStatus = xpmParseHeader(data);
if (ErrorStatus != XpmSuccess)
return (ErrorStatus);
/*
* read values
*/
ErrorStatus = ParseValues(data, &width, &height, &ncolors, &cpp,
&x_hotspot, &y_hotspot, &hotspot, &extensions);
if (ErrorStatus != XpmSuccess)
return (ErrorStatus);
/*
* store the hints comment line
*/
if (attributes && (attributes->valuemask & XpmReturnInfos))
xpmGetCmt(data, &hints_cmt);
/*
* init the hastable
*/
if (USE_HASHTABLE) {
ErrorStatus = xpmHashTableInit(&hashtable);
if (ErrorStatus != XpmSuccess)
return (ErrorStatus);
}
/*
* read colors
*/
ErrorStatus = ParseColors(data, ncolors, cpp, &colorTable, &hashtable);
if (ErrorStatus != XpmSuccess)
RETURN(ErrorStatus);
/*
* store the colors comment line
*/
if (attributes && (attributes->valuemask & XpmReturnInfos))
xpmGetCmt(data, &colors_cmt);
/*
* read pixels and index them on color number
*/
ErrorStatus = ParsePixels(data, width, height, ncolors, cpp, colorTable,
&hashtable, &pixelindex);
/*
* free the hastable
*/
if (USE_HASHTABLE)
xpmHashTableFree(&hashtable);
if (ErrorStatus != XpmSuccess)
RETURN(ErrorStatus);
/*
* store the pixels comment line
*/
if (attributes && (attributes->valuemask & XpmReturnInfos))
xpmGetCmt(data, &pixels_cmt);
/*
* store found informations in the xpmInternAttrib structure
*/
attrib_return->width = width;
attrib_return->height = height;
attrib_return->cpp = cpp;
attrib_return->ncolors = ncolors;
attrib_return->colorTable = colorTable;
attrib_return->pixelindex = pixelindex;
if (attributes) {
if (attributes->valuemask & XpmReturnInfos) {
attributes->hints_cmt = hints_cmt;
attributes->colors_cmt = colors_cmt;
attributes->pixels_cmt = pixels_cmt;
}
if (hotspot) {
attributes->x_hotspot = x_hotspot;
attributes->y_hotspot = y_hotspot;
attributes->valuemask |= XpmHotspot;
}
}
return (XpmSuccess);
}
/*
* open the given array to be read or written as an xpmData which is returned
*/
void
xpmOpenArray(data, mdata)
char **data;
xpmData *mdata;
{
mdata->type = XPMARRAY;
mdata->stream.data = data;
mdata->cptr = *data;
mdata->line = 0;
mdata->CommentLength = 0;
mdata->Bcmt = mdata->Ecmt = NULL;
mdata->Bos = mdata->Eos = '\0';
}
unsigned char *ReadXpm3Pixmap(FILE *fp, char *datafile, int *w, int *h,
XColor *colrs, int *bg)
{
xpmData mdata;
XpmAttributes attributes;
xpmInternAttrib attrib;
int ErrorStatus;
int Colors;
XColor tmpcolr;
int i/*, j*/;
char **colorStrings;
char *colorName;
unsigned char *pix_data;
unsigned char *bptr;
unsigned int *pixels;
extern Widget view;
#ifndef DISABLE_TRACE
if (srcTrace) {
gettimeofday(&Tv, &Tz);
fprintf(stderr, "ReadXpm3Pixmap enter (%d.%d)\n", Tv.tv_sec, Tv.tv_usec);
}
#endif
*w = 0;
*h = 0;
attributes.valuemask = XpmReturnPixels;
if ((ErrorStatus = xpmReadFile(datafile, &mdata)) != XpmSuccess)
{
return(NULL);
}
xpmInitInternAttrib(&attrib);
ErrorStatus = xpmParseData(&mdata, &attrib, &attributes);
if (ErrorStatus != XpmSuccess)
{
xpmFreeInternAttrib(&attrib);
xpmDataClose(&mdata);
return(NULL);
}
*w = (int)attrib.width;
*h = (int)attrib.height;
Colors = (int)attrib.ncolors;
for (i=0; i<Colors; i++)
{
colorStrings = attrib.colorTable[i];
colorName = colorStrings[NKEYS];
if (strcmp(colorName, TRANSPARENT_COLOR) == 0)
{
unsigned long bg_pixel;
/* First, go fetch the pixel. */
XtVaGetValues (view, XtNbackground, &bg_pixel, NULL);
/* Now, load up tmpcolr. */
tmpcolr.pixel = bg_pixel;
/* Now query for the full color info. */
XQueryColor (XtDisplay (view),
(installed_colormap ?
installed_cmap :
DefaultColormap (XtDisplay (view),
DefaultScreen (XtDisplay (view)))),
&tmpcolr);
*bg = i;
}
else
{
XParseColor(dsp,
(installed_colormap ?
installed_cmap :
DefaultColormap(dsp, DefaultScreen(dsp))),
colorName, &tmpcolr);
}
colrs[i].red = tmpcolr.red;
colrs[i].green = tmpcolr.green;
colrs[i].blue = tmpcolr.blue;
colrs[i].pixel = i;
colrs[i].flags = DoRed|DoGreen|DoBlue;
}
for (i=Colors; i<256; i++)
{
colrs[i].red = 0;
colrs[i].green = 0;
colrs[i].blue = 0;
colrs[i].pixel = i;
colrs[i].flags = DoRed|DoGreen|DoBlue;
}
pixels = attrib.pixelindex;
pix_data = (unsigned char *)malloc((*w) * (*h));
if (pix_data == NULL)
{
#ifndef DISABLE_TRACE
if (srcTrace) {
fprintf(stderr, "Not enough memory for data.\n");
}
#endif
xpmFreeInternAttrib(&attrib);
xpmDataClose(&mdata);
return((unsigned char *)NULL);
}
bptr = pix_data;
for (i=0; i<((*w) * (*h)); i++)
{
int pix;
pix = (int)*pixels;
if (pix > (256 - 1))
pix = 0;
*bptr++ = (unsigned char)pix;
pixels++;
}
xpmFreeInternAttrib(&attrib);
xpmDataClose(&mdata);
#ifndef DISABLE_TRACE
if (srcTrace) {
gettimeofday(&Tv, &Tz);
fprintf(stderr, "ReadXpm3Pixmap exit (%d.%d)\n", Tv.tv_sec, Tv.tv_usec);
}
#endif
return(pix_data);
}
unsigned char *ProcessXpm3Data(Widget wid, char **xpmdata, int *w,
int *h, XColor *colrs, int *bg)
{
xpmData mdata;
XpmAttributes attributes;
xpmInternAttrib attrib;
int ErrorStatus;
int Colors;
XColor tmpcolr;
int i/*, j*/;
char **colorStrings;
char *colorName;
unsigned char *pix_data;
unsigned char *bptr;
unsigned int *pixels;
extern Widget view;
*w = 0;
*h = 0;
attributes.valuemask = XpmReturnPixels;
xpmOpenArray(xpmdata, &mdata);
xpmInitInternAttrib(&attrib);
ErrorStatus = xpmParseData(&mdata, &attrib, &attributes);
if (ErrorStatus != XpmSuccess)
{
xpmFreeInternAttrib(&attrib);
xpmDataClose(&mdata);
return(NULL);
}
*w = (int)attrib.width;
*h = (int)attrib.height;
Colors = (int)attrib.ncolors;
for (i=0; i<Colors; i++)
{
colorStrings = attrib.colorTable[i];
colorName = colorStrings[NKEYS];
if (strcmp(colorName, TRANSPARENT_COLOR) == 0)
{
unsigned long bg_pixel;
/* First, go fetch the pixel. */
XtVaGetValues (wid, XtNbackground, &bg_pixel, NULL);
/* Now, load up tmpcolr. */
tmpcolr.pixel = bg_pixel;
/* Now query for the full color info. */
XQueryColor (XtDisplay (wid),
(installed_colormap ?
installed_cmap :
DefaultColormap (XtDisplay (wid),
DefaultScreen (XtDisplay (wid)))),
&tmpcolr);
*bg = i;
}
else
{
XParseColor(XtDisplay (wid),
(installed_colormap ?
installed_cmap :
DefaultColormap(XtDisplay (wid),
DefaultScreen(XtDisplay (wid)))),
colorName, &tmpcolr);
}
colrs[i].red = tmpcolr.red;
colrs[i].green = tmpcolr.green;
colrs[i].blue = tmpcolr.blue;
colrs[i].pixel = i;
colrs[i].flags = DoRed|DoGreen|DoBlue;
}
for (i=Colors; i<256; i++)
{
colrs[i].red = 0;
colrs[i].green = 0;
colrs[i].blue = 0;
colrs[i].pixel = i;
colrs[i].flags = DoRed|DoGreen|DoBlue;
}
pixels = attrib.pixelindex;
pix_data = (unsigned char *)malloc((*w) * (*h));
if (pix_data == NULL)
{
#ifndef DISABLE_TRACE
if (srcTrace) {
fprintf(stderr, "Not enough memory for data.\n");
}
#endif
xpmFreeInternAttrib(&attrib);
xpmDataClose(&mdata);
return((unsigned char *)NULL);
}
bptr = pix_data;
for (i=0; i<((*w) * (*h)); i++)
{
int pix;
pix = (int)*pixels;
if (pix > (256 - 1))
pix = 0;
*bptr++ = (unsigned char)pix;
pixels++;
}
xpmFreeInternAttrib(&attrib);
xpmDataClose(&mdata);
#ifndef DISABLE_TRACE
if (srcTrace) {
gettimeofday(&Tv, &Tz);
fprintf(stderr, "ReadXpm3Pixmap exit (%d.%d)\n", Tv.tv_sec, Tv.tv_usec);
}
#endif
return(pix_data);
}
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