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Man Pages


Manual Reference Pages  -  ZIP_FILE_EXTRA_FIELDS_COUNT_BY_ID (3)

NAME

zip_file_extra_fields_count, zip_file_extra_fields_count_by_id - count extra fields for file in zip

CONTENTS

Library
Synopsis
Description
Return Values
Errors
See Also
Authors

LIBRARY

libzip (-lzip)

SYNOPSIS


.In zip.h zip_int16_t zip_file_extra_fields_count zip_t *archive zip_uint64_t index "zip_flags_t flags" zip_int16_t 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 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 zip_file_extra_fields_count_by_id function counts the extra fields with ID (two-byte signature) extra_field_id. The other arguments are the same as for 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

zip_file_extra_fields_count and zip_file_extra_fields_count_by_id fail if:
[ZIP_ER_NOENT]
  index is not a valid file index in archive.

SEE ALSO

libzip(3), zip_file_extra_field_delete(3), zip_file_extra_field_get(3), zip_file_extra_field_set(3)

AUTHORS


.An -nosplit
.An Dieter Baron Aq Mt dillo@nih.at and
.An Thomas Klausner Aq Mt tk@giga.or.at
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