a60bde79f9
changed macro name, moved and renamed script to become docs/libcurl/has.pl, generate code that is checksrc compliant
143 lines
4.1 KiB
Perl
Executable File
143 lines
4.1 KiB
Perl
Executable File
#!/usr/bin/perl
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#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) 2011-2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at http://curl.haxx.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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###########################################################################
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#
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# Experience has shown that the symbols-in-versions file is very useful to
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# applications that want to build with a wide range of libcurl versions.
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# It is however easy to get it wrong and the source gets a bit messy with all
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# the fixed numerical comparisons.
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#
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# The point of this script is to provide an easy-to-use macro for libcurl-
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# using applications to do preprocessor checks for specific libcurl defines,
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# and yet make the code clearly show what the macro is used for.
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#
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# Run this script and generate curl/has.h and then use that header in
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# a fashion similar to:
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#
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# #include <curl/has.h>
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#
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# #if CURL_HAS(CURLOPT_MUTE)
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# has mute
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# #else
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# no mute
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# #endif
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#
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#
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sub str2num {
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my ($str)=@_;
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if($str =~ /([0-9]*)\.([0-9]*)\.*([0-9]*)/) {
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return sprintf("0x%06x", $1<<16 | $2 << 8 | $3);
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}
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}
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print <<EOS
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#ifndef __CURL_HAS_H
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#define __CURL_HAS_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \\| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \\___|\\___/|_| \\_\\_____|
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*
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* Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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/*
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* This file is generated. Do not edit by hand. Edit
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* docs/libcurl/symbols-in-versions and regenerate this with has.pl
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*/
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#include <curl/curlver.h>
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/*
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* #include <curl/has.h>
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*
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* #if CURL_HAS(CURLOPT_MUTE)
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* use_mute();
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* #else
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* without_mute();
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* #endif
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*/
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#define CURL_HAS_IN(x,y) \\
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(defined(CURLHAS_ ## x ) && (CURLHAS_ ## x <= y) && \\
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(!defined(CURLHAS_ ## x ## _L) || ( CURLHAS_ ## x ## _L >= y)))
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#define CURL_HAS(x) CURL_HAS_IN(x, LIBCURL_VERSION_NUM)
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EOS
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;
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while(<STDIN>) {
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if(/^(CURL[^ ]*)[ \t]*(.*)/) {
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my ($sym, $vers)=($1, $2);
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my $intr;
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my $rm;
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my $dep;
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# is there removed info?
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if($vers =~ /([\d.]+)[ \t-]+([\d.-]+)[ \t]+([\d.]+)/) {
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($intr, $dep, $rm)=($1, $2, $3);
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}
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# is it a dep-only line?
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elsif($vers =~ /([\d.]+)[ \t-]+([\d.]+)/) {
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($intr, $dep)=($1, $2);
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}
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else {
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$intr = $vers;
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}
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my $inum = str2num($intr);
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print <<EOS
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#define CURLHAS_${sym} $inum /* $intr */
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EOS
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;
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my $irm = str2num($rm);
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if($rm) {
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print <<EOS
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#define CURLHAS_${sym}_L $irm /* Last $rm */
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EOS
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;
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}
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}
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}
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print <<EOS
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#endif /* __CURL_HAS_H */
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EOS
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;
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