/src/zziplib/zzip/stat.c
https://bitbucket.org/cabalistic/ogredeps/ · C · 136 lines · 79 code · 16 blank · 41 comment · 12 complexity · 06ceed2731027400d178fb6ecab0573a MD5 · raw file
- /*
- * Author:
- * Guido Draheim <guidod@gmx.de>
- * Tomi Ollila <Tomi.Ollila@iki.fi>
- *
- * Copyright (c) 1999,2000,2001,2002 Guido Draheim
- * All rights reserved,
- * use under the restrictions of the
- * Lesser GNU General Public License
- * or alternatively the restrictions
- * of the Mozilla Public License 1.1
- *
- * Description:
- * although this file is defining a function called zzip_stat it
- * will not need a real stat(2) exported by the Operating System.
- * It will just try to fill the fields of the ZZIP_STAT structure
- * of
- */
- #include <zzip/lib.h> /* exported... */
- #include <zzip/file.h>
- #include <string.h>
- #if defined(_AIX)
- #include <strings.h> /* for strcasecmp */
- #endif
- #include <sys/stat.h>
- #define ZZIP_USE_INTERNAL
- #include <zzip/info.h>
- /**
- * obtain information about a filename in an opened zip-archive without
- * opening that file first. Mostly used to obtain the uncompressed
- * size of a file inside a zip-archive. see => zzip_dir_open.
- */
- int
- zzip_dir_stat(ZZIP_DIR * dir, zzip_char_t * name, ZZIP_STAT * zs, int flags)
- {
- struct zzip_dir_hdr *hdr = dir->hdr0;
- int (*cmp) (zzip_char_t *, zzip_char_t *);
- if (flags & ZZIP_CASEINSENSITIVE) flags |= ZZIP_CASELESS;
- cmp = (flags & ZZIP_CASELESS) ? strcasecmp : strcmp;
- if (! hdr)
- {
- dir->errcode = ZZIP_ENOENT;
- return -1;
- }
- if (flags & ZZIP_IGNOREPATH)
- {
- char *n = strrchr(name, '/');
- if (n)
- name = n + 1;
- }
- while (1)
- {
- register char *hdr_name = hdr->d_name;
- if (flags & ZZIP_IGNOREPATH)
- {
- register char *n = strrchr(hdr_name, '/');
- if (n)
- hdr_name = n + 1;
- }
- if (! cmp(hdr_name, name))
- break;
- if (! hdr->d_reclen)
- {
- dir->errcode = ZZIP_ENOENT;
- return -1;
- }
- hdr = (struct zzip_dir_hdr *) ((char *) hdr + hdr->d_reclen);
- }
- zs->d_compr = hdr->d_compr;
- zs->d_csize = hdr->d_csize;
- zs->st_size = hdr->d_usize;
- zs->d_name = hdr->d_name;
- return 0;
- }
- /** => zzip_dir_stat
- * This function will obtain information about a opened file _within_ a
- * zip-archive. The file is supposed to be open (otherwise -1 is returned).
- * The st_size stat-member contains the uncompressed size. The optional
- * d_name is never set here.
- */
- int
- zzip_file_stat(ZZIP_FILE * file, ZZIP_STAT * zs)
- {
- if (! file)
- return -1;
- zs->d_compr = file->method;
- zs->d_csize = file->csize;
- zs->st_size = file->usize;
- zs->d_name = 0;
- return 0;
- }
- /** => zzip_dir_stat
- * This function will obtain information about a opened file which may be
- * either real/zipped. The file is supposed to be open (otherwise -1 is
- * returned). The st_size stat-member contains the uncompressed size.
- * The optional d_name is never set here. For a real file, we do set the
- * d_csize := st_size and d_compr := 0 for meaningful defaults.
- */
- int
- zzip_fstat(ZZIP_FILE * file, ZZIP_STAT * zs)
- {
- if (ZZIP_file_real(file))
- {
- struct stat st;
- if (fstat(file->fd, &st) < 0)
- return -1;
- zs->st_size = st.st_size;
- zs->d_csize = st.st_size;
- zs->d_compr = 0;
- return 0;
- } else
- {
- return zzip_file_stat(file, zs);
- }
- }
- /*
- * Local variables:
- * c-file-style: "stroustrup"
- * End:
- */