ZIP_FILE_ADD(3) | Library Functions Manual | ZIP_FILE_ADD(3)

# NAME

`zip_file_add`, `zip_file_replace` —
add file to zip archive or replace file in zip archive

# LIBRARY

libzip (-lzip)

# SYNOPSIS

`#include <zip.h>`

zip_int64_t
`zip_file_add`(zip_t *archive, const char *name, zip_source_t *source, zip_flags_t flags);

int
`zip_file_replace`(zip_t *archive, zip_uint64_t index, zip_source_t *source, zip_flags_t flags);

# DESCRIPTION

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(3).

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.

# SEE ALSO

libzip(3), zip_source(3)

# HISTORY

`zip_file_add`() and `zip_file_replace`() were added in libzip 0.11.

# AUTHORS

Dieter Baron <dillo@nih.at> and Thomas Klausner <wiz@gatalith.at>

March 18, 2024 | NiH