130 lines
3.8 KiB
Groff
130 lines
3.8 KiB
Groff
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.\" Automatically generated from an mdoc input file. Do not edit.
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.\" zip_source_zip.mdoc -- create data source from zip file
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.\" Copyright (C) 2004-2017 Dieter Baron and Thomas Klausner
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.\"
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.\" This file is part of libzip, a library to manipulate ZIP archives.
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.\" The authors can be contacted at <libzip@nih.at>
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in
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.\" the documentation and/or other materials provided with the
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.\" distribution.
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.\" 3. The names of the authors may not be used to endorse or promote
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.\" products derived from this software without specific prior
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.\" written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
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.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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.\" GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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.\" IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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.\" IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.TH "ZIP_SOURCE_ZIP" "3" "December 18, 2017" "NiH" "Library Functions Manual"
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.nh
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.if n .ad l
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.SH "NAME"
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\fBzip_source_zip\fR
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\- create data source from zip file
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.SH "LIBRARY"
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libzip (-lzip)
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.SH "SYNOPSIS"
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\fB#include <zip.h>\fR
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.sp
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\fIzip_source_t *\fR
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.br
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.PD 0
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.HP 4n
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\fBzip_source_zip\fR(\fIzip_t\ *archive\fR, \fIzip_t\ *srcarchive\fR, \fIzip_uint64_t\ srcidx\fR, \fIzip_flags_t\ flags\fR, \fIzip_uint64_t\ start\fR, \fIzip_int64_t\ len\fR);
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.PD
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.SH "DESCRIPTION"
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The function
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\fBzip_source_zip\fR()
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creates a zip source from a file in a zip archive.
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The
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\fIsrcarchive\fR
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argument is the (open) zip archive containing the source zip file
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at index
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\fIsrcidx\fR.
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\fIlen\fR
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bytes from offset
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\fIstart\fR
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will be used in the zip_source.
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If
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\fIlen\fR
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is 0 or \-1, the rest of the file, starting from
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\fIstart\fR,
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is used.
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If
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\fIstart\fR
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is zero and
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\fIlen\fR
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is \-1, the whole file will be copied without decompressing it.
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.PP
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Supported flags are:
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.TP 23n
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\fRZIP_FL_UNCHANGED\fR
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Try to get the original data without any changes that may have been
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made to
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\fIsrcarchive\fR
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after opening it.
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.TP 23n
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\fRZIP_FL_RECOMPRESS\fR
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When adding the data from
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\fIsrcarchive\fR,
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re-compress it using the current settings instead of copying the
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compressed data.
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.SH "RETURN VALUES"
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Upon successful completion, the created source is returned.
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Otherwise,
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\fRNULL\fR
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is returned and the error code in
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\fIarchive\fR
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is set to indicate the error.
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.SH "ERRORS"
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\fBzip_source_zip\fR()
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fails if:
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.TP 19n
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[\fRZIP_ER_CHANGED\fR]
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Unchanged data was requested, but it is not available.
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.TP 19n
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[\fRZIP_ER_INVAL\fR]
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\fIsrcarchive\fR,
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\fIsrcidx\fR,
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\fIstart\fR,
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or
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\fIlen\fR
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are invalid.
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.TP 19n
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[\fRZIP_ER_MEMORY\fR]
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Required memory could not be allocated.
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.PD 0
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.PP
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Additionally, it can return all error codes from
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\fBzip_stat_index\fR()
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and
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\fBzip_fopen_index\fR().
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.PD
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.SH "SEE ALSO"
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libzip(3),
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zip_file_add(3),
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zip_file_replace(3),
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zip_source(3)
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.SH "HISTORY"
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\fBzip_source_zip\fR()
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was added in libzip 1.0.
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.SH "AUTHORS"
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Dieter Baron <\fIdillo@nih.at\fR>
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and
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Thomas Klausner <\fItk@giga.or.at\fR>
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