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.\" ========================================================================
.\"
.IX Title "metaf 1"
.TH metaf 1 "2007-09-11" "metaf2xml 1.29" "User Contributed Perl Documentation"
.SH "NAME"
metaf.pl \-\- CGI wrapper script to fetch, decode, and display METAR, TAF, and
SYNOP weather information
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
as a standalone script:
.PP
.Vb 1
\&  metaf.pl 'type_metaf=...&type_synop=...&lang=...&format=...&src_metaf=...&src_synop=...&mode=...&msg_metaf=...&msg_synop=...'
.Ve
.PP
or with \s-1HTML:\s0
.PP
.Vb 11
\&  <form method="post" action="metaf.pl">
\&   <input name="type_metaf" ... >
\&   <input name="type_synop" ... >
\&   <input name="lang" ... >
\&   <input name="format" ... >
\&   <input name="src_metaf" ... >
\&   <input name="src_synop" ... >
\&   <input name="mode" ... >
\&   <input name="msg_metaf" ... >
\&   <input name="msg_synop" ... >
\&  </form>
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
.Vb 1
\&  Note: This manual is valid for version 1.29 of metaf2xml.
.Ve
.PP
This \s-1CGI\s0 script provides a web interface to (optionally) fetch up-to-date
weather information (\s-1METAR\s0, \s-1TAF\s0, or \s-1SYNOP\s0 messages) from the Internet or a file,
decode it, store it as \s-1XML\s0, and display it as \s-1HTML\s0 or text.
It can be used with \s-1GET\s0 or \s-1POST\s0 methods.
.SH "DEPENDENCIES"
.IX Header "DEPENDENCIES"
The module \f(CW\*(C`CGI\*(C'\fR and the program \f(CW\*(C`metaf2xml.pl\*(C'\fR are required.
.PP
To convert the \s-1XML\s0 to text or \s-1HTML\s0, either the program \f(CW\*(C`xsltproc\*(C'\fR (or
equivalent programs) or an \s-1XML\s0 capable \s-1HTTP\s0 client is required.
.SH "PARAMETERS"
.IX Header "PARAMETERS"
The following \s-1CGI\s0 parameters are recognised:
.IP "\fBtype_metaf\fR" 4
.IX Item "type_metaf"
type of \s-1METAR/TAF\s0 message to be parsed: metar (default), taf, icao (to fetch)
.IP "\fBtype_synop\fR" 4
.IX Item "type_synop"
type of \s-1SYNOP\s0 message to be parsed: synop (default), wmo (to fetch)
.IP "\fBlang\fR" 4
.IX Item "lang"
language for output of script and display of parsed message: de (default), en,
es, ru
.IP "\fBformat\fR" 4
.IX Item "format"
output format: html (default), text, or xml (with style sheet reference)
.IP "\fBsrc_metaf\fR" 4
.IX Item "src_metaf"
source for \s-1METAR/TAR\s0 messages to be fetched: noaa (default), adds, addsds,
file (forced automatically if \fI/tmp/metar.txt\fR exists)
.IP "\fBsrc_synop\fR" 4
.IX Item "src_synop"
source for \s-1SYNOP\s0 messages to be fetched: nws_land (default), cod,
file (forced automatically if \fI/tmp/synop.txt\fR exists)
.IP "\fBmode\fR" 4
.IX Item "mode"
which messages to fetch and how to display: latest/detailed (default),
all/summary
.IP "\fBmsg_metaf\fR" 4
.IX Item "msg_metaf"
\&\s-1METAR/TAF\s0 message to be processed
.IP "\fBmsg_synop\fR" 4
.IX Item "msg_synop"
\&\s-1SYNOP\s0 message to be processed
.PP
The length of the body of the \s-1POST\s0 request (not the length of query string of
the \s-1URL\s0) is restricted to 600 bytes.
.PP
The following directories and files are used by the script and can be adapted to
local needs by modifying the script (e.g. during install):
.IP "\fB$METAF2XML_BIN\fR" 4
.IX Item "$METAF2XML_BIN"
directory where the \f(CW\*(C`metaf2xml.pl\*(C'\fR is expected (default: \f(CW\*(C`/opt/metaf2xml/bin\*(C'\fR)
.IP "\fB$METAF2XML_XSL\fR" 4
.IX Item "$METAF2XML_XSL"
directory where the \s-1XSL\s0 scripts are located (default: \f(CW\*(C`/opt/metaf2xml/share\*(C'\fR)
.IP "\fB$CGI_DATA_DIR\fR" 4
.IX Item "$CGI_DATA_DIR"
directory for the local copies of messages (default: \f(CW\*(C`/tmp\*(C'\fR)
.IP "\fB$CGI_TMP_DIR\fR" 4
.IX Item "$CGI_TMP_DIR"
directory for the temporary \s-1XML\s0 file (default: \f(CW\*(C`/tmp\*(C'\fR)
.IP "\fB$CURL\fR" 4
.IX Item "$CURL"
path and options for \f(CW\*(C`curl\*(C'\fR (default: \f(CW\*(C`curl \-sSf \-\-stderr \-\*(C'\fR)
.IP "\fB$CURL_PROXY_OPTS\fR" 4
.IX Item "$CURL_PROXY_OPTS"
options for \f(CW\*(C`curl\*(C'\fR if a \s-1HTTP\s0 proxy should be used (default: empty)
.PP
If there are any \s-1CGI\s0 errors the type of error is reported and the script
terminates.
.PP
All parameters are checked to have one of the allowed values.
.PP
If the parameter \f(CW\*(C`lang\*(C'\fR is not set the first allowed value of the \s-1HTTP\s0 header
\&\f(CW\*(C`Accept\-Language\*(C'\fR is used.
.PP
The parameters \f(CW\*(C`msg_metaf\*(C'\fR and \f(CW\*(C`msg_synop\*(C'\fR are truncated to 500 characters.
Letters are converted to upper case. Any characters that are not allowed in a
message are removed.
.PP
If the \s-1METAR/TAF\s0 message starts with \f(CW\*(C`METAR\*(C'\fR or \f(CW\*(C`TAF\*(C'\fR, the parameter
\&\f(CW\*(C`type_metaf\*(C'\fR is ignored.
.PP
If the \s-1SYNOP\s0 message starts with \f(CW\*(C`SYNOP\*(C'\fR, the parameter \f(CW\*(C`type_synop\*(C'\fR is
ignored.
.PP
If \f(CW\*(C`type_metaf\*(C'\fR is \f(CW\*(C`icao\*(C'\fR and one or more airport \s-1ICAO\s0 codes are given,
messages for the specified airports are fetched from the local
files \fI$CGI_DATA_DIR/{metar,staf,taf}.txt\fR (if \f(CW\*(C`src_metaf\*(C'\fR is \f(CW\*(C`file\*(C'\fR)
or the specified online source.
.PP
If \f(CW\*(C`type_synop\*(C'\fR is \f(CW\*(C`wmo\*(C'\fR and one or more \s-1WMO\s0 ids are given,
messages for the specified stations are fetched from the local file
\&\fI$CGI_DATA_DIR/synop.txt\fR (if \f(CW\*(C`src_synop\*(C'\fR is \f(CW\*(C`file\*(C'\fR) or the specified online
source.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
Parse a \s-1METAR\s0 message and print the result as \s-1XML:\s0
.PP
.Vb 1
\&  metaf.pl 'format=xml&msg_metaf=YUDO 090600Z 00000KT CAVOK 22/15 Q1021 NOSIG'
.Ve
.PP
Fetch up-to-date \s-1METAR\s0 and \s-1TAF\s0 messages (from \s-1NOAA\s0) and \s-1SYNOP\s0 messages (from
\&\s-1NWS\s0) for Rio (\f(CW\*(C`SBGL\*(C'\fR, 83746), New York (\f(CW\*(C`KJFK\*(C'\fR, 74486), and Tokyo (\f(CW\*(C`RJTT\*(C'\fR,
47662) and print the result as \s-1HTML:\s0
.PP
.Vb 1
\&  metaf.pl 'type_metaf=icao&type_synop=wmo&msg_metaf=SBGL KJFK RJTT&msg_synop=83746 74486 47662'
.Ve
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBmetaf2xml::parser\fR(3pm),
\&\fBmetaf2xml::XML\fR(3pm),
\&\fBmetaf2xml\fR(1),
.PP
<http://metaf2xml.sourceforge.net/>
.SH "COPYRIGHT, LICENSE, DISCLAIMER"
.IX Header "COPYRIGHT, LICENSE, DISCLAIMER"
copyright (c) 2006\-2007 metaf2xml @ <http://metaf2xml.sourceforge.net/>
.PP
This program is free software; you can redistribute it and/or
modify it under the terms of the \s-1GNU\s0 General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
.PP
This program is distributed in the hope that it will be useful, but
\&\s-1WITHOUT\s0 \s-1ANY\s0 \s-1WARRANTY\s0; without even the implied warranty of
\&\s-1MERCHANTABILITY\s0 or \s-1FITNESS\s0 \s-1FOR\s0 A \s-1PARTICULAR\s0 \s-1PURPOSE\s0.  See the \s-1GNU\s0
General Public License for more details.
.PP
You should have received a copy of the \s-1GNU\s0 General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place, Suite 330, Boston, \s-1MA\s0 02111\-1307, \s-1USA\s0