diff options
Diffstat (limited to 'Build/source/texk/dvipdfm-x/src/mfileio.c')
-rw-r--r-- | Build/source/texk/dvipdfm-x/src/mfileio.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/Build/source/texk/dvipdfm-x/src/mfileio.c b/Build/source/texk/dvipdfm-x/src/mfileio.c new file mode 100644 index 00000000000..df83b932f83 --- /dev/null +++ b/Build/source/texk/dvipdfm-x/src/mfileio.c @@ -0,0 +1,127 @@ +/* + + This is dvipdfmx, an eXtended version of dvipdfm by Mark A. Wicks. + + Copyright (C) 2002-2012 by Jin-Hwan Cho and Shunsaku Hirata, + the dvipdfmx project team. + + Copyright (C) 1998, 1999 by Mark A. Wicks <mwicks@kettering.edu> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. +*/ + +#include <stdio.h> +#include <stdlib.h> +#include "system.h" +#include "mfileio.h" +#include "error.h" + +#ifdef IODEBUG +static FILE *iodebug_file = NULL; +static long event = 0; +static void io_debug_init(void) +{ + if (!iodebug_file) { + iodebug_file = fopen ("fopen.log", "wb"); + fprintf (stderr, "\n*** File IO debugging started ***\n"); + } + if (!iodebug_file) { + fprintf (stderr, "\nError opening io log\n"); + } +} +#endif + +#ifdef IODEBUG +FILE *mfopen(const char *name, const char *mode, const char *function, int line) +{ + FILE *tmp; + io_debug_init(); + tmp = fopen (name, mode); + event += 1; + fprintf(iodebug_file, "%p %07ld [fopen] %s:%d\n", tmp, event, + function, line); + return tmp; +} +int mfclose(FILE *file, const char *function, int line) +{ + io_debug_init(); + event += 1; + fprintf(iodebug_file, "%p %07ld [fclose] %s:%d\n", file, event, + function, line); + return fclose(file); +} +#endif + +static void os_error(void) +{ + ERROR ("io: An OS command failed that should not have.\n"); +} + +void seek_absolute (FILE *file, long pos) +{ + if (fseek(file, pos, SEEK_SET)) { + os_error(); + } +} + +void seek_relative (FILE *file, long pos) +{ + if (fseek(file, pos, SEEK_CUR)) { + os_error(); + } +} + + +void seek_end (FILE *file) +{ + if (fseek(file, 0L, SEEK_END)) { + os_error(); + } +} + +long tell_position (FILE *file) +{ + long size; + if ((size = ftell (file)) < 0) { + os_error(); + } + return size; +} + +long file_size (FILE *file) +{ + long size; + /* Seek to end */ + seek_end (file); + size = tell_position (file); + rewind (file); + return (size); +} + +/* Unlike fgets, mfgets works with \r, \n, or \r\n end of lines. */ +char *mfgets (char *buffer, unsigned long length, FILE *file) +{ + int ch = 0, i = 0; + while (i < length-1 && (ch = fgetc (file)) >= 0 && ch != '\n' && ch != '\r') + buffer[i++] = ch; + buffer[i] = 0; + if (ch < 0 && i == 0) + return NULL; + if (ch == '\r' && (ch = fgetc (file)) >= 0 && (ch != '\n')) + ungetc (ch, file); + return buffer; +} + +char work_buffer[WORK_BUFFER_SIZE]; |