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ZIP_FILE_EXTRA_FIELDS_COUNT

Section: C Library Functions (3)
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BSD mandoc

NAME

zip_file_extra_fields_count zip_file_extra_fields_count_by_id - count extra fields for file in zip

LIBRARY

libzip -lzip)

SYNOPSIS

In zip.h Ft zip_int16_t Fn zip_file_extra_fields_count zip_t *archive zip_uint64_t index zip_flags_t flags Ft zip_int16_t Fn zip_file_extra_fields_count_by_id zip_t *archive zip_uint64_t index zip_uint16_t extra_field_id zip_flags_t flags

DESCRIPTION

The Fn zip_file_extra_fields_count function counts the extra fields for the file at position index in the zip archive.

The following flags are supported:

ZIP_FL_CENTRAL: Count extra fields from the archive's central directory.
ZIP_FL_LOCAL: Count extra fields from the local file headers.
ZIP_FL_UNCHANGED: Count the original unchanged extra fields, ignoring any changes made.

The Fn zip_file_extra_fields_count_by_id function counts the extra fields with ID (tw-byte signature) extra_field_id The other arguments are the same as for Fn zip_file_extra_fields_count .

Extra fields that are the same in the central directory and the local file header are merged into one. Therefore, the counts with ZIP_FL_CENTRAL and ZIP_FL_LOCAL do not need to add up to the same value as when given ZIP_FL_CENTRAL|ZIP_FL_LOCAL at the same time.

RETURN VALUES

Upon successful completion, the requested number of extra fields is returned. Otherwise, -1 is returned and the error code in archive is set to indicate the error.

ERRORS

Fn zip_file_extra_fields_count and Fn zip_file_extra_fields_count_by_id fail if:

Bq Er ZIP_ER_NOENT: index is not a valid file index in archive

HISTORY

Fn zip_file_extra_fields_count and Fn zip_file_extra_fields_count_by_id were added in libzip 0.11.

AUTHORS

An -nosplit An Dieter Baron Aq Mt dillo@nih.at and An Thomas Klausner Aq Mt wiz@gatalith.at