zip_file_replace (3)

libzip (-lzip)

#include <zip.h>

zip_int64_t

zip_file_add(struct zip *archive, const char *name, struct zip_source *source, zip_flags_t flags);

int

zip_file_replace(struct zip *archive, zip_uint64_t index, struct zip_source *source, zip_flags_t flags);

The function zip_file_add() adds a file to a zip archive, while zip_file_replace() replaces an existing file in a zip archive. The argument archive specifies the zip archive to which the file should be added. name is the file's name in the zip archive (for zip_file_add()), while index specifies which file should be replaced (for zip_file_replace()). The flags argument can be any combination of ZIP_FL_OVERWRITE with one of ZIP_FL_ENC_*:

ZIP_FL_OVERWRITE

Overwrite any existing file of the same name. For zip_file_add only.

ZIP_FL_ENC_GUESS

Guess encoding of name (default).

ZIP_FL_ENC_UTF_8

Interpret name as UTF-8.

ZIP_FL_ENC_CP437

Interpret name as code page 437 (CP-437).

The data is obtained from the source argument. See the zip_source_*() functions cited in SEE ALSO.

Upon successful completion, zip_file_add() returns the index of the new file in the archive, and zip_file_replace() returns 0. Otherwise, -1 is returned and the error code in archive is set to indicate the error.

struct zip_source *s;
const char buf="teststring";

if ((s=zip_source_buffer(archive, buffer, sizeof(buf), 0)) == NULL ||
    zip_file_add(archive, name, s, ZIP_FL_ENC_UTF_8) < 0) {
    zip_source_free(s);
    printf("error adding file: %s\n", zip_strerror(archive));
}

zip_file_add() and zip_file_replace() fail if:

[ZIP_ER_EXISTS]

There is already a file called name in the archive. (Only applies to zip_file_add(), and only if ZIP_FL_OVERWRITE is not provided).

[ZIP_ER_INVAL]

source or name are NULL, or index is invalid.

[ZIP_ER_MEMORY]

Required memory could not be allocated.

[ZIP_ER_RDONLY]

Archive was opened in read-only mode.

libzip(3), zip_source_file(3), zip_source_filep(3), zip_source_function(3), zip_source_zip(3)

Dieter Baron <[email protected]> and Thomas Klausner <[email protected]>