zip_file_extra_field_delete
,
zip_file_extra_field_delete_by_id
—
delete extra field for file in zip
libzip (-lzip)
#include
<zip.h>
int
zip_file_extra_field_delete
(
zip_t
*archive,
zip_uint64_t
index,
zip_uint16_t
extra_field_index,
zip_flags_t
flags);
int
zip_file_extra_field_delete_by_id
(
zip_t
*archive,
zip_uint64_t
index,
zip_uint16_t
extra_field_id,
zip_uint16_t
extra_field_index,
zip_flags_t
flags);
The
zip_file_extra_field_delete
() function
deletes the extra field with index
extra_field_index for the file at position
index in the zip archive.
If
extra_field_index is
ZIP_EXTRA_FIELD_ALL
, then all extra fields
will be deleted.
The following
flags are supported:
-
-
ZIP_FL_CENTRAL
- Delete extra fields from the archive's central directory.
-
-
ZIP_FL_LOCAL
- Delete extra fields from the local file headers.
The
zip_file_extra_field_delete_by_id
()
function deletes the extra field with ID (two-byte signature)
extra_field_id and index
extra_field_index (in other words, the
extra_field_index'th
extra field with ID
extra_field_id) The other
arguments are the same as for
zip_file_extra_field_delete
()
(
ZIP_EXTRA_FIELD_ALL
will delete all extra
fields of the specified ID).
Please note that due to the library design, the index of an extra field may be
different between central directory and local file headers. For this reason,
it is not allowed to specify both
ZIP_FL_CENTRAL
and
ZIP_FL_LOCAL
in
flags, except when deleting all extra fields
(i.e.,
extra_field_index being
ZIP_EXTRA_FIELD_ALL
).
Upon successful completion 0 is returned. Otherwise, -1 is returned and the
error code in
archive is set to indicate the
error.
zip_file_extra_field_delete
() and
zip_file_extra_field_delete_by_id
() fail
if:
-
-
- [
ZIP_ER_NOENT
]
- index is not a valid file index in
archive.
libzip(3),
zip_file_extra_field_get(3),
zip_file_extra_field_set(3),
zip_file_extra_fields_count(3)
zip_file_extra_field_delete
() and
zip_file_extra_field_delete_by_id
() were
added in libzip 0.11.
Dieter Baron
<
dillo@nih.at>
and
Thomas Klausner
<
tk@giga.or.at>