ZIP_GET_FILE_EXTRA(3)

NAME
zip_get_file_extra - get extra field for file in zip

LIBRARY
libzip (-lzip)

SYNOPSIS
#include <zip.h>
const char *
zip_get_file_extra(struct zip *archive, zip_uint64_t index, int *lenp, int flags);

DESCRIPTION
The zip_get_file_extra() function returns the extra field for the file at position index in the zip archive. This pointer should not be modified or free(3)'d. If lenp is not NULL, the integer to which it points will be set to the length of the extra. If flags is set to ZIP_FL_UNCHANGED, the original unchanged extra field is returned.

RETURN VALUES
Upon successful completion, a pointer to the extra field is returned, or NULL if there is no extra field. In case of an error, NULL is returned and the error code in archive is set to indicate the error.

ERRORS
zip_get_file_extra() fails if:

[ZIP_ER_INVAL]
    index is not a valid file index in archive.

SEE ALSO
libzip(3), zip_set_file_extra(3)

AUTHORS
-nosplit Dieter Baron <dillo@giga.or.at> and Thomas Klausner <tk@giga.or.at>