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PC-Online 1996 May
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x11r6-ch
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xpm-3.4
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RdFToI.c
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1994-06-06
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6KB
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204 lines
/*
* Copyright (C) 1989-94 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.
*/
/*****************************************************************************\
* RdFToI.c: *
* *
* XPM library *
* Parse an XPM file and create the image and possibly its mask *
* *
* Developed by Arnaud Le Hors *
\*****************************************************************************/
#include "xpmP.h"
#ifdef VMS
#include "sys$library:stat.h"
#else
#include <sys/stat.h>
#endif
LFUNC(OpenReadFile, int, (char *filename, xpmData *mdata));
LFUNC(xpmDataClose, void, (xpmData *mdata));
int
XpmReadFileToImage(display, filename,
image_return, shapeimage_return, attributes)
Display *display;
char *filename;
XImage **image_return;
XImage **shapeimage_return;
XpmAttributes *attributes;
{
XpmImage image;
XpmInfo info;
int ErrorStatus;
/* create an XpmImage from the file */
if (attributes) {
xpmInitAttributes(attributes);
xpmSetInfoMask(&info, attributes);
ErrorStatus = XpmReadFileToXpmImage(filename, &image, &info);
} else
ErrorStatus = XpmReadFileToXpmImage(filename, &image, NULL);
if (ErrorStatus != XpmSuccess)
return (ErrorStatus);
/* create the related ximages */
ErrorStatus = XpmCreateImageFromXpmImage(display, &image,
image_return, shapeimage_return,
attributes);
if (attributes) {
if (ErrorStatus >= 0) /* no fatal error */
xpmSetAttributes(attributes, &image, &info);
XpmFreeXpmInfo(&info);
}
/* free the XpmImage */
XpmFreeXpmImage(&image);
return (ErrorStatus);
}
int
XpmReadFileToXpmImage(filename, image, info)
char *filename;
XpmImage *image;
XpmInfo *info;
{
xpmData mdata;
int ErrorStatus;
/* init returned values */
xpmInitXpmImage(image);
xpmInitXpmInfo(info);
/* open file to read */
if ((ErrorStatus = OpenReadFile(filename, &mdata)) != XpmSuccess)
return (ErrorStatus);
/* create the XpmImage from the XpmData */
ErrorStatus = xpmParseData(&mdata, image, info);
xpmDataClose(&mdata);
return (ErrorStatus);
}
/*
* open the given file to be read as an xpmData which is returned.
*/
static int
OpenReadFile(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 (((int) 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 (((int) strlen(filename) > 3) &&
!strcmp(".gz", filename + (strlen(filename) - 3))) {
mdata->type = XPMPIPE;
sprintf(buf, "gunzip -qc %s", filename);
if (!(mdata->stream.file = popen(buf, "r")))
return (XpmOpenFailed);
} else {
if (!(compressfile = (char *) XpmMalloc(strlen(filename) + 4)))
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, ".gz");
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
*/
static void
xpmDataClose(mdata)
xpmData *mdata;
{
switch (mdata->type) {
case XPMFILE:
if (mdata->stream.file != (stdin))
fclose(mdata->stream.file);
break;
#ifdef ZPIPE
case XPMPIPE:
pclose(mdata->stream.file);
break;
#endif
}
}