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Diffstat (limited to 'src/RdFToBuf.c')
| -rw-r--r-- | src/RdFToBuf.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/RdFToBuf.c b/src/RdFToBuf.c new file mode 100644 index 0000000..898a9fc --- /dev/null +++ b/src/RdFToBuf.c @@ -0,0 +1,118 @@ +/* + * 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. + */ + +/*****************************************************************************\ +* RdFToBuf.c: * +* * +* XPM library * +* Copy a file to a malloc'ed buffer, provided as a convenience. * +* * +* Developed by Arnaud Le Hors * +\*****************************************************************************/ + +/* + * The code related to FOR_MSW has been added by + * HeDu (hedu@cul-ipn.uni-kiel.de) 4/94 + */ + +#include "XpmI.h" +#include <sys/stat.h> +#if !defined(FOR_MSW) && !defined(WIN32) +#include <unistd.h> +#endif +#ifndef VAX11C +#include <fcntl.h> +#endif +#if defined(FOR_MSW) || defined(WIN32) +#include <io.h> +#define stat _stat +#define fstat _fstat +#define fdopen _fdopen +#define O_RDONLY _O_RDONLY +#endif + +int +XpmReadFileToBuffer(filename, buffer_return) + char *filename; + char **buffer_return; +{ + int fd, fcheck, len; + char *ptr; + struct stat stats; + FILE *fp; + + *buffer_return = NULL; + +#ifndef VAX11C + fd = open(filename, O_RDONLY); +#else + fd = open(filename, O_RDONLY, NULL); +#endif + if (fd < 0) + return XpmOpenFailed; + + if (fstat(fd, &stats)) { + close(fd); + return XpmOpenFailed; + } + fp = fdopen(fd, "r"); + if (!fp) { + close(fd); + return XpmOpenFailed; + } + len = (int) stats.st_size; + ptr = (char *) XpmMalloc(len + 1); + if (!ptr) { + fclose(fp); + return XpmNoMemory; + } + fcheck = fread(ptr, 1, len, fp); + fclose(fp); +#ifdef VMS + /* VMS often stores text files in a variable-length record format, + where there are two bytes of size followed by the record. fread + converts this so it looks like a record followed by a newline. + Unfortunately, the size reported by fstat() (and fseek/ftell) + counts the two bytes for the record terminator, while fread() + counts only one. So, fread() sees fewer bytes in the file (size + minus # of records) and thus when asked to read the amount + returned by stat(), it fails. + The best solution, suggested by DEC, seems to consider the length + returned from fstat() as an upper bound and call fread() with + a record length of 1. Then don't check the return value. + We'll check for 0 for gross error that's all. + */ + len = fcheck; + if (fcheck == 0) { +#else + if (fcheck != len) { +#endif + XpmFree(ptr); + return XpmOpenFailed; + } + ptr[len] = '\0'; + *buffer_return = ptr; + return XpmSuccess; +} |