ZIP_FILE_SET_COMMENT(3) | Library Functions Manual | ZIP_FILE_SET_COMMENT(3)

# NAME

`zip_file_set_comment` —
set comment for file in zip

# LIBRARY

libzip (-lzip)

# SYNOPSIS

`#include <zip.h>`

int
`zip_file_set_comment`(zip_t *archive, zip_uint64_t index, const char *comment, zip_uint16_t len, zip_flags_t flags);

# DESCRIPTION

The `zip_file_set_comment`() function sets the comment for the file at position index in the zip archive to comment of length len. If comment is `NULL` and len is 0, the file comment will be removed. The flags argument can be any of:

`ZIP_FL_ENC_GUESS`
  Guess encoding of comment (default). (Only CP-437 and UTF-8 are recognized.)
`ZIP_FL_ENC_UTF_8`
  Interpret comment as UTF-8.
`ZIP_FL_ENC_CP437`
  Interpret comment as code page 437 (CP-437).

# RETURN VALUES

Upon successful completion 0 is returned. Otherwise, -1 is returned and the error information in archive is set to indicate the error.

# ERRORS

`zip_file_set_comment`() fails if:

[`ZIP_ER_INVAL`]
  index is not a valid file index in archive, or len is less than 0 or longer than the maximum comment length in a zip file (65535), or comment is not a valid UTF-8 encoded string.
[`ZIP_ER_MEMORY`]
  Required memory could not be allocated.
[`ZIP_ER_RDONLY`]
  The archive was opened in read-only mode.

# SEE ALSO

libzip(3), zip_file_get_comment(3), zip_get_archive_comment(3), zip_set_archive_comment(3)

# HISTORY

`zip_file_set_comment`() was added in libzip 0.11.

# AUTHORS

Dieter Baron <dillo@nih.at> and Thomas Klausner <tk@giga.or.at>

September 22, 2020 | NiH