diff options
Diffstat (limited to 'debian/transcode/transcode-1.1.7/libtc/iodir.c')
| -rw-r--r-- | debian/transcode/transcode-1.1.7/libtc/iodir.c | 233 |
1 files changed, 233 insertions, 0 deletions
diff --git a/debian/transcode/transcode-1.1.7/libtc/iodir.c b/debian/transcode/transcode-1.1.7/libtc/iodir.c new file mode 100644 index 00000000..e11e0a06 --- /dev/null +++ b/debian/transcode/transcode-1.1.7/libtc/iodir.c @@ -0,0 +1,233 @@ +/* + * iodir.c + * + * Copyright (C) Thomas Oestreich - May 2002 + * + * This file is part of transcode, a video stream processing tool + * + * transcode 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, or (at your option) + * any later version. + * + * transcode 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 GNU Make; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include "libtc.h" +#include "iodir.h" +#include <stdlib.h> +#include <string.h> + +#ifdef OS_BSD +typedef off_t off64_t; +#define lseek64 lseek +#endif + +/* get the next valid directory entry */ +static int tc_dirlist_next(TCDirList *tcdir) +{ + struct dirent *dent = NULL; + int have_file = 0; + + if (tcdir == NULL) { + return -1; + } + + do { + dent = readdir(tcdir->dir); + if (dent == NULL) { + break; /* all entries in dirlist have been processed */ + } + + if ((strncmp(dent->d_name, ".", 1) != 0) + && (strcmp(dent->d_name, "..") != 0)) { + /* discard special files */ + have_file = 1; + } + + } while (!have_file); + + if (have_file) { + tc_snprintf(tcdir->filename, sizeof(tcdir->filename), + "%s%s%s", tcdir->dir_name, tcdir->path_sep, + dent->d_name); + return 0; + } + return 1; +} + +/* qsort helper */ +static int compare_name(const void *file1_ptr, const void *file2_ptr) +{ + return strcoll(*(const char **)file1_ptr, *(const char **)file2_ptr); +} + +static int tc_dirlist_sortbuf(TCDirList *tcdir) +{ + int n = 0; + + if (tcdir == NULL) { + return -1; + } + + tcdir->entries = tc_malloc(tcdir->nfiles * sizeof(char *)); + if (tcdir->entries == NULL) { + return -1; + } + + while (tc_dirlist_next(tcdir) == 0) { + tcdir->entries[n] = tc_strdup(tcdir->filename); + if (tcdir->entries[n] == NULL) { + tc_log_warn(__FILE__, "can't memorize dirlist entry " + "for '%s'\n", tcdir->filename); + } + n++; + } + + qsort(tcdir->entries, tcdir->nfiles, sizeof(char *), compare_name); + + tcdir->buffered = 1; + tcdir->findex = 0; + + return 0; +} + +static int tc_dirlist_set_path_sep(TCDirList *tcdir) +{ + size_t len = 0; + char end_of_dir; + + len = strlen(tcdir->dir_name); + if (len == 0) { + return -1; + } + + end_of_dir = tcdir->dir_name[len - 1]; + if (end_of_dir == '/') { + tcdir->path_sep = ""; + } else { + tcdir->path_sep = "/"; + } + + return 0; +} + +int tc_dirlist_file_count(TCDirList *tcdir) +{ + if (tcdir == NULL) { + return -1; + } + return tcdir->nfiles; +} + + +int tc_dirlist_open(TCDirList *tcdir, const char *dirname, int sort) +{ + int ret; + + if (tcdir == NULL) { + return -1; + } + + tcdir->filename[0] = '\0'; + tcdir->entries = NULL; + tcdir->nfiles = 0; + tcdir->findex = 0; + tcdir->buffered = 0; + tcdir->dir_name = dirname; + + ret = tc_dirlist_set_path_sep(tcdir); + if (ret != 0) { + return ret; + } + + tcdir->dir = opendir(dirname); + if (tcdir->dir == NULL) { + return -1; + } + + rewinddir(tcdir->dir); + while (tc_dirlist_next(tcdir) == 0) { + tcdir->nfiles++; + } + rewinddir(tcdir->dir); + + if (sort) { + tc_dirlist_sortbuf(tcdir); + } + return 0; +} + +void tc_dirlist_close(TCDirList *tcdir) +{ + if (tcdir != NULL) { + if (tcdir->buffered == 1) { + int i = 0; + for (i = 0; i < tcdir->nfiles; i++) { + if (tcdir->entries[i] != NULL) { + /* should be always true */ + free(tcdir->entries[i]); + tcdir->nfiles--; + } + } + + if (tcdir->entries != NULL) { + /* should be always true */ + free(tcdir->entries); + } + + if (tcdir->nfiles > 0) { + /* should never happen */ + tc_log_warn(__FILE__, "left out %i directory entries", + tcdir->nfiles); + } + } + + if (tcdir->dir != NULL) { + closedir(tcdir->dir); + tcdir->dir = NULL; + } + } +} + +const char *tc_dirlist_scan(TCDirList *tcdir) +{ + const char *ret = NULL; + + if (tcdir == NULL) { + return NULL; + } + + if (tcdir->buffered == 0) { + if (tc_dirlist_next(tcdir) == 0) { + ret = tcdir->filename; + } + } else { + /* buffered */ + if (tcdir->findex < tcdir->nfiles) { + ret = tcdir->entries[tcdir->findex++]; + } + } + + return ret; +} + +/*************************************************************************/ + +/* + * Local variables: + * c-file-style: "stroustrup" + * c-file-offsets: ((case-label . *) (statement-case-intro . *)) + * indent-tabs-mode: nil + * End: + * + * vim: expandtab shiftwidth=4: + */ |