#!/usr/bin/perl #*************************************************************************** # _ _ ____ _ # Project ___| | | | _ \| | # / __| | | | |_) | | # | (__| |_| | _ <| |___ # \___|\___/|_| \_\_____| # # Copyright (C) 2011, Daniel Stenberg, <daniel@haxx.se>, et al. # # This software is licensed as described in the file COPYING, which # you should have received as part of this distribution. The terms # are also available at http://curl.haxx.se/docs/copyright.html. # # You may opt to use, copy, modify, merge, publish, distribute and/or sell # copies of the Software, and permit persons to whom the Software is # furnished to do so, under the terms of the COPYING file. # # This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY # KIND, either express or implied. # ########################################################################### # # Experience has shown that the symbols-in-versions file is very useful to # applications that want to build with a wide range of libcurl versions. # It is however easy to get it wrong and the source gets a bit messy with all # the fixed numerical comparisons. # # The point of this script is to provide an easy-to-use macro for libcurl- # using applications to do preprocessor checks for specific libcurl defines, # and yet make the code clearly show what the macro is used for. # # Run this script and generate libcurl-symbols.h and then use that header in # a fashion similar to: # # #include "libcurl-symbols.h" # # #if LIBCURL_HAS(CURLOPT_MUTE) # has mute # #else # no mute # #endif # # open F, "<symbols-in-versions"; sub str2num { my ($str)=@_; if($str =~ /([0-9]*)\.([0-9]*)\.*([0-9]*)/) { return sprintf("0x%06x", $1<<16 | $2 << 8 | $3); } } print <<EOS #include <curl/curl.h> #define LIBCURL_HAS(x) \\ (defined(x ## _FIRST) && (x ## _FIRST <= LIBCURL_VERSION_NUM) && \\ (!defined(x ## _LAST) || ( x ## _LAST >= LIBCURL_VERSION_NUM))) EOS ; while(<F>) { if(/^(CURL[^ ]*)[ \t]*(.*)/) { my ($sym, $vers)=($1, $2); my $intr; my $rm; my $dep; # is there removed info? if($vers =~ /([\d.]+)[ \t-]+([\d.-]+)[ \t]+([\d.]+)/) { ($intr, $dep, $rm)=($1, $2, $3); } # is it a dep-only line? elsif($vers =~ /([\d.]+)[ \t-]+([\d.]+)/) { ($intr, $dep)=($1, $2); } else { $intr = $vers; } my $inum = str2num($intr); print <<EOS #define ${sym}_FIRST $inum /* Added in $intr */ EOS ; my $irm = str2num($rm); if($rm) { print <<EOS #define ${sym}_LAST $irm /* Last featured in $rm */ EOS ; } } }