ZIP_SOURCE_ZIP_FILE(3) Library Functions Manual ZIP_SOURCE_ZIP_FILE(3)
NAME
zip_source_zip_file, zip_source_zip_file_create - create data source from
zip file
LIBRARY
libzip (-lzip)
SYNOPSIS
#include <zip.h>
zip_source_t *
zip_source_zip_file(zip_t *archive, zip_t *srcarchive,
zip_uint64_t srcidx, zip_flags_t flags, zip_uint64_t start,
zip_int64_t length, const char *password);
zip_source_t *
zip_source_zip_file_create(zip_t *srcarchive, zip_uint64_t srcidx,
zip_flags_t flags, zip_uint64_t start, zip_int64_t length,
const char *password, zip_error_t *error);
DESCRIPTION
The functions zip_source_zip_file() and zip_source_zip_file_create()
create a zip source from a file in a zip archive. The srcarchive
argument is the (open) zip archive containing the source zip file at
index srcidx. length bytes from offset start will be used in the
zip_source. If length is -1, the rest of the file, starting from start,
is used.
If you intend to copy a file from one archive to another, using the flag
ZIP_FL_COMPRESSED is more efficient, as it avoids recompressing the file
data.
Supported flags are:
ZIP_FL_COMPRESSED Get the compressed data. This is only supported if
the complete file data is requested (start == 0 and
length == -1). This is not supported for changed
data. Default is uncompressed.
ZIP_FL_ENCRYPTED Get the encrypted data. (This flag implies
ZIP_FL_COMPRESSED.) This is only supported if the
complete file data is requested (start == 0 and
length == -1). Default is decrypted.
ZIP_FL_UNCHANGED Try to get the original data without any changes
that may have been made to srcarchive after opening
it.
RETURN VALUES
Upon successful completion, the created source is returned. Otherwise,
NULL is returned and the error code in archive or error is set to
indicate the error.
ERRORS
zip_source_zip_file() and zip_source_zip_file_create() fail if:
[ZIP_ER_CHANGED] Unchanged data was requested, but it is not available.
[ZIP_ER_INVAL] srcarchive, srcidx, start, or length are invalid.
[ZIP_ER_MEMORY] Required memory could not be allocated.
Additionally, it can return all error codes from zip_stat_index() and
zip_fopen_index().
SEE ALSO
libzip(3), zip_file_add(3), zip_file_replace(3), zip_source(3)
HISTORY
zip_source_zip_file() and zip_source_zip_file_create() were added in
libzip 1.10.0.
AUTHORS
Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>
macOS 13.4 March 10, 2023 macOS 13.4
libzip 1.10.0 - Generated Wed Jul 5 09:14:18 CDT 2023