.\" Automatically generated from an mdoc input file.  Do not edit.
.\" zip_source_read.mdoc -- read data from zip source
.\" Copyright (C) 2014-2017 Dieter Baron and Thomas Klausner
.\"
.\" This file is part of libzip, a library to manipulate ZIP archives.
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.TH "ZIP_SOURCE_READ" "3" "September 28, 2021" "NiH" "Library Functions Manual"
.nh
.if n .ad l
.SH "NAME"
\fBzip_source_read\fR
\- read data from zip source
.SH "LIBRARY"
libzip (-lzip)
.SH "SYNOPSIS"
\fB#include <zip.h>\fR
.sp
\fIzip_int64_t\fR
.br
.PD 0
.HP 4n
\fBzip_source_read\fR(\fIzip_source_t\ *source\fR, \fIvoid\ *data\fR, \fIzip_uint64_t\ len\fR);
.PD
.SH "DESCRIPTION"
The function
\fBzip_source_read\fR()
reads up to
\fIlen\fR
bytes of data from
\fIsource\fR
at the current read offset into the buffer
\fIdata\fR.
.PP
The zip source
\fIsource\fR
has to be opened for reading by calling
zip_source_open(3)
first.
.SH "RETURN VALUES"
Upon successful completion the number of bytes read is returned.
When
\fBzip_source_read\fR()
is called after reaching the end of the file, 0 is returned.
Otherwise, \-1 is returned and the error information in
\fIsource\fR
is set to indicate the error.
.SH "SEE ALSO"
libzip(3),
zip_source(3),
zip_source_seek(3),
zip_source_tell(3),
zip_source_write(3)
.SH "HISTORY"
\fBzip_source_read\fR()
was added in libzip 1.0.
.SH "AUTHORS"
Dieter Baron <\fIdillo@nih.at\fR>
and
Thomas Klausner <\fItk@giga.or.at\fR>