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>

Linux 6.7.4-arch1-1             March 10, 2023             Linux 6.7.4-arch1-1