zip_file_replace3

Usage

Library

libzip (-lzip)

Overview

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). (Only CP-437 and UTF-8 are recognized.)

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 zip_source(5).

NOTE: zip_source_free(3) should not be called on a source after it was used successfully in a zip_file_add or zip_file_replace call.

Please also note that when using zip_replace, the target file's extra field information will be deleted since this usually is dependent on the file contents. If you want to keep them, query them beforehand with zip_file_extra_field_get(3) and restore them after zip_replace with zip_file_extra_field_set(3).

Return values

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.

Examples

zip_source_t *s;
const char buf[]="teststring";
if ((s=zip_source_buffer(archive, buf, 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));
}

Errors

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.