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Diffstat (limited to 'libXpm/src/RdFToI.c')
| -rw-r--r-- | libXpm/src/RdFToI.c | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/libXpm/src/RdFToI.c b/libXpm/src/RdFToI.c new file mode 100644 index 000000000..bc05fe624 --- /dev/null +++ b/libXpm/src/RdFToI.c @@ -0,0 +1,274 @@ +/* + * 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. + */ + +/*****************************************************************************\ +* RdFToI.c: * +* * +* XPM library * +* Parse an XPM file and create the image and possibly its mask * +* * +* Developed by Arnaud Le Hors * +\*****************************************************************************/ +/* $XFree86$ */ + +/* October 2004, source code review by Thomas Biege <thomas@suse.de> */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "XpmI.h" +#ifndef NO_ZPIPE +#include <fcntl.h> +#include <errno.h> +#include <sys/types.h> +#include <sys/wait.h> +#else +#ifdef FOR_MSW +#include <fcntl.h> +#endif +#endif + +LFUNC(OpenReadFile, int, (char *filename, xpmData *mdata)); +LFUNC(xpmDataClose, void, (xpmData *mdata)); + +FUNC(xpmPipeThrough, FILE*, (int fd, + const char *cmd, + const char *arg1, + const char *mode)); + +#ifndef CXPMPROG +int +XpmReadFileToImage( + Display *display, + char *filename, + XImage **image_return, + XImage **shapeimage_return, + XpmAttributes *attributes) +{ + XpmImage image; + XpmInfo info; + int ErrorStatus; + xpmData mdata; + + xpmInitXpmImage(&image); + xpmInitXpmInfo(&info); + + /* open file to read */ + if ((ErrorStatus = OpenReadFile(filename, &mdata)) != XpmSuccess) + return (ErrorStatus); + + /* create the XImage from the XpmData */ + if (attributes) { + xpmInitAttributes(attributes); + xpmSetInfoMask(&info, attributes); + ErrorStatus = xpmParseDataAndCreate(display, &mdata, + image_return, shapeimage_return, + &image, &info, attributes); + } else + ErrorStatus = xpmParseDataAndCreate(display, &mdata, + image_return, shapeimage_return, + &image, NULL, attributes); + if (attributes) { + if (ErrorStatus >= 0) /* no fatal error */ + xpmSetAttributes(attributes, &image, &info); + XpmFreeXpmInfo(&info); + } + + xpmDataClose(&mdata); + /* free the XpmImage */ + XpmFreeXpmImage(&image); + + return (ErrorStatus); +} + +int +XpmReadFileToXpmImage( + 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); +} +#endif /* CXPMPROG */ + +#ifndef NO_ZPIPE +/* Do not depend on errno after read_through */ +FILE* +xpmPipeThrough( + int fd, + const char *cmd, + const char *arg1, + const char *mode) +{ + FILE* fp; + int status, fds[2], in = 0, out = 1; + pid_t pid; + if ( 'w' == *mode ) + out = 0, in = 1; + if ( pipe(fds) < 0 ) + return NULL; + pid = fork(); + if ( pid < 0 ) + goto fail1; + if ( 0 == pid ) + { + close(fds[in]); + if ( dup2(fds[out], out) < 0 ) + goto err; + close(fds[out]); + if ( dup2(fd, in) < 0 ) + goto err; + close(fd); + pid = fork(); + if ( pid < 0 ) + goto err; + if ( 0 == pid ) + { + execlp(cmd, cmd, arg1, (char *)NULL); + perror(cmd); + goto err; + } + _exit(0); + err: + _exit(1); + } + close(fds[out]); + /* calling process: wait for first child */ + while ( waitpid(pid, &status, 0) < 0 && EINTR == errno ) + ; + if ( WIFSIGNALED(status) || + (WIFEXITED(status) && WEXITSTATUS(status) != 0) ) + goto fail2; + fp = fdopen(fds[in], mode); + if ( !fp ) + goto fail2; + close(fd); /* still open in 2nd child */ + return fp; +fail1: + close(fds[out]); +fail2: + close(fds[in]); + return NULL; +} +#endif + +/* + * open the given file to be read as an xpmData which is returned. + */ +static int +OpenReadFile( + char *filename, + xpmData *mdata) +{ + if (!filename) { + mdata->stream.file = (stdin); + mdata->type = XPMFILE; + } else { + int fd = open(filename, O_RDONLY); +#if defined(NO_ZPIPE) + if ( fd < 0 ) + return XpmOpenFailed; +#else + const char* ext = NULL; + if ( fd >= 0 ) + ext = strrchr(filename, '.'); +#ifdef STAT_ZFILE /* searching for z-files if the given name not found */ + else + { + size_t len = strlen(filename); + char *compressfile = (char *) XpmMalloc(len + 4); + if ( !compressfile ) + return (XpmNoMemory); + strcpy(compressfile, filename); + strcpy(compressfile + len, ext = ".Z"); + fd = open(compressfile, O_RDONLY); + if ( fd < 0 ) + { + strcpy(compressfile + len, ext = ".gz"); + fd = open(compressfile, O_RDONLY); + if ( fd < 0 ) + { + XpmFree(compressfile); + return XpmOpenFailed; + } + } + XpmFree(compressfile); + } +#endif + if ( ext && !strcmp(ext, ".Z") ) + { + mdata->type = XPMPIPE; + mdata->stream.file = xpmPipeThrough(fd, "uncompress", "-c", "r"); + } + else if ( ext && !strcmp(ext, ".gz") ) + { + mdata->type = XPMPIPE; + mdata->stream.file = xpmPipeThrough(fd, "gunzip", "-qc", "r"); + } + else +#endif /* z-files */ + { + mdata->type = XPMFILE; + mdata->stream.file = fdopen(fd, "r"); + } + if (!mdata->stream.file) + { + close(fd); + return (XpmOpenFailed); + } + } + mdata->CommentLength = 0; +#ifdef CXPMPROG + mdata->lineNum = 0; + mdata->charNum = 0; +#endif + return (XpmSuccess); +} + +/* + * close the file related to the xpmData if any + */ +static void +xpmDataClose(xpmData *mdata) +{ + if (mdata->stream.file != (stdin)) + fclose(mdata->stream.file); +} |