.\" Converted with mdoc2man 0.2
.\" from NiH: zip_source_file.mdoc,v 1.9 2005/07/20 17:18:04 wiz Exp 
.\" $NiH: zip_source_file.mdoc,v 1.9 2005/07/20 17:18:04 wiz Exp $
.\"
.\" zip_source_file.mdoc \-- create data source from a file
.\" Copyright (C) 2004, 2005 Dieter Baron and Thomas Klausner
.\"
.\" This file is part of libzip, a library to manipulate ZIP archives.
.\" The authors can be contacted at <nih@giga.or.at>
.\"
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.\" modification, are permitted provided that the following conditions
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
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.\"
.TH ZIP_SOURCE_FILE 3 "July 20, 2005" NiH
.SH "NAME"
zip_source_file \- create data source from a file
.SH "LIBRARY"
libzip (-lzip)
.SH "SYNOPSIS"
.Ft struct zip_source *
.Fn zip_source_file "struct zip *archive" "const char *fname" "off_t start" "off_t len"
.SH "DESCRIPTION"
The function
.Fn zip_source_file
creates a zip source from a file.
.Fn zip_source_file
opens
\fBfname\fR
and reads
\fBlen\fR
bytes from offset
\fBstart\fR
from it.
If
\fBlen\fR
is 0 or \-1, the whole file (starting from
\fBstart )\fR
is used.
.SH "RETURN VALUES"
Upon successful completion, the created source is returned.
Otherwise,
\fBNULL\fR
is returned and the error code in
\fBarchive\fR
is set to indicate the error.
.SH "ERRORS"
.Fn zip_source_file
fails if:
.RS
.TP 4
Bq Er ZIP_ER_INVAL
\fBfname,\fR
\fBstart,\fR
or
\fBlen\fR
are invalid.
.TP 4
Bq Er ZIP_ER_MEMORY
Required memory could not be allocated.
.TP 4
Bq Er ZIP_ER_OPEN
Opening
\fBfname\fR
failed.
.RE
.SH "SEE ALSO"
libzip(3),
zip_add(3),
zip_replace(3),
zip_source_buffer(3),
zip_source_filep(3),
zip_source_free(3),
zip_source_function(3),
zip_source_zip(3)
.SH "AUTHORS"

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