.\" zip_file_add.mdoc -- add files to zip archive
.\" Copyright (C) 2004-2021 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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.Dd September 22, 2020
.Dt ZIP_FILE_ADD 3
.Os
.Sh NAME
.Nm zip_file_add ,
.Nm zip_file_replace
.Nd add file to zip archive or replace file in zip archive
.Sh LIBRARY
libzip (-lzip)
.Sh SYNOPSIS
.In zip.h
.Ft zip_int64_t
.Fn zip_file_add "zip_t *archive" "const char *name" "zip_source_t *source" "zip_flags_t flags"
.Ft int
.Fn zip_file_replace "zip_t *archive" "zip_uint64_t index" "zip_source_t *source" "zip_flags_t flags"
.Sh DESCRIPTION
The function
.Fn zip_file_add
adds a file to a zip archive, while
.Fn zip_file_replace
replaces an existing file in a zip archive.
The argument
.Ar archive
specifies the zip archive to which the file should be added.
.Ar name
is the file's name in the zip archive (for
.Fn zip_file_add ) ,
while
.Ar index
specifies which file should be replaced (for
.Fn zip_file_replace ) .
The
.Ar flags
argument can be any combination of
.Dv ZIP_FL_OVERWRITE
with one of
.Dv ZIP_FL_ENC_* :
.Bl -tag -width XZIPXFLXENCXSTRICTXX
.It Dv ZIP_FL_OVERWRITE
Overwrite any existing file of the same name.
For
.Nm zip_file_add
only.
.It Dv ZIP_FL_ENC_GUESS
Guess encoding of
.Ar name
(default).
(Only CP-437 and UTF-8 are recognized.)
.It Dv ZIP_FL_ENC_UTF_8
Interpret
.Ar name
as UTF-8.
.It Dv ZIP_FL_ENC_CP437
Interpret
.Ar name
as code page 437 (CP-437).
.El
The data is obtained from the
.Ar source
argument, see
.Xr zip_source 3 .
.Pp
.Em NOTE :
.Xr zip_source_free 3
should not be called on a
.Ar source
after it was used successfully in a
.Nm zip_file_add
or
.Nm zip_file_replace
call.
.Sh RETURN VALUES
Upon successful completion,
.Fn zip_file_add
returns the index of the new file in the archive, and
.Fn zip_file_replace
returns 0.
Otherwise, \-1 is returned and the error code in
.Ar archive
is set to indicate the error.
.Sh EXAMPLES
.Bd -literal -offset indent
zip_source_t *s;
const char buf[]="teststring";

if ((s=zip_source_buffer(archive, buf, sizeof(buf), 0)) == NULL ||
    zip_file_add(archive, name, s, ZIP_FL_ENC_UTF_8) < 0) {
    zip_source_free(s);
    printf("error adding file: %s\en", zip_strerror(archive));
}
.Ed
.Sh ERRORS
.Fn zip_file_add
and
.Fn zip_file_replace
fail if:
.Bl -tag -width Er
.It Bq Er ZIP_ER_EXISTS
There is already a file called
.Ar name
in the archive.
(Only applies to
.Fn zip_file_add ,
and only if
.Dv ZIP_FL_OVERWRITE
is not provided).
.It Bq Er ZIP_ER_INVAL
.Ar source
or
.Ar name
are
.Dv NULL ,
or
.Ar index
is invalid.
.It Bq Er ZIP_ER_MEMORY
Required memory could not be allocated.
.It Bq Er ZIP_ER_RDONLY
Archive was opened in read-only mode.
.El
.Sh SEE ALSO
.Xr libzip 3 ,
.Xr zip_source 3
.Sh HISTORY
.Fn zip_file_add
and
.Fn zip_file_replace
were added in libzip 0.11.
.Sh AUTHORS
.An -nosplit
.An Dieter Baron Aq Mt dillo@nih.at
and
.An Thomas Klausner Aq Mt tk@giga.or.at