.\" zip_source_file.mdoc \-- create data source from a file
.\" Copyright (C) 2004-2008 Dieter Baron and Thomas Klausner
.\"
.\" This file is part of libzip, a library to manipulate ZIP archives.
.\" The authors can be contacted at <libzip@nih.at>
.\"
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.TH ZIP_SOURCE_FILE 3 "August 1, 2008" NiH
.SH "NAME"
zip_source_file \- create data source from a file
.SH "LIBRARY"
libzip (-lzip)
.SH "SYNOPSIS"
.PP
struct zip_source *
zip_source_file(struct zip *archive, const char *fname); \
"zip_uint64_t start" "zip_int64_t len"
.SH "DESCRIPTION"
The function
zip_source_file
creates a zip source from a file.
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.
.PP
The fie is opened and read when the data from the source is used, usually by
zip_close.
.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"
zip_source_file
fails if:
.RS
.TP 4
[ZIP_ER_INVAL]
\fBfname,\fR
\fBstart,\fR
or
\fBlen\fR
are invalid.
.TP 4
[ZIP_ER_MEMORY]
Required memory could not be allocated.
.TP 4
[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>