diff options
Diffstat (limited to 'ext/zip/lib/zip_source_seek.c')
| -rw-r--r-- | ext/zip/lib/zip_source_seek.c | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/ext/zip/lib/zip_source_seek.c b/ext/zip/lib/zip_source_seek.c deleted file mode 100644 index 92299b8ab2..0000000000 --- a/ext/zip/lib/zip_source_seek.c +++ /dev/null @@ -1,92 +0,0 @@ -/* - zip_source_seek.c -- seek to offset - Copyright (C) 2014 Dieter Baron and Thomas Klausner - - This file is part of libzip, a library to manipulate ZIP archives. - The authors can be contacted at <libzip@nih.at> - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - 1. Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - 2. Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - 3. The names of the authors may not be used to endorse or promote - products derived from this software without specific prior - written permission. - - THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS - OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY - DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE - GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER - IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR - OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN - IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -*/ - - -#include "zipint.h" - - -ZIP_EXTERN int -zip_source_seek(zip_source_t *src, zip_int64_t offset, int whence) -{ - zip_source_args_seek_t args; - - if (src->source_closed) { - return -1; - } - if (!ZIP_SOURCE_IS_OPEN_READING(src) || (whence != SEEK_SET && whence != SEEK_CUR && whence != SEEK_END)) { - zip_error_set(&src->error, ZIP_ER_INVAL, 0); - return -1; - } - - args.offset = offset; - args.whence = whence; - - return (_zip_source_call(src, &args, sizeof(args), ZIP_SOURCE_SEEK) < 0 ? -1 : 0); -} - - -zip_int64_t -zip_source_seek_compute_offset(zip_uint64_t offset, zip_uint64_t length, void *data, zip_uint64_t data_length, zip_error_t *error) -{ - zip_int64_t new_offset; - zip_source_args_seek_t *args = ZIP_SOURCE_GET_ARGS(zip_source_args_seek_t, data, data_length, error); - - if (args == NULL) { - return -1; - } - - switch (args->whence) { - case SEEK_CUR: - new_offset = (zip_int64_t)offset + args->offset; - break; - - case SEEK_END: - new_offset = (zip_int64_t)length + args->offset; - break; - - case SEEK_SET: - new_offset = args->offset; - break; - - default: - zip_error_set(error, ZIP_ER_INVAL, 0); - return -1; - } - - if (new_offset < 0 || (zip_uint64_t)new_offset > length) { - zip_error_set(error, ZIP_ER_INVAL, 0); - return -1; - } - - return new_offset; -} |