diff options
| -rwxr-xr-x | lib/talloc/script/mksigs.pl | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/lib/talloc/script/mksigs.pl b/lib/talloc/script/mksigs.pl new file mode 100755 index 0000000000..28a2e747a0 --- /dev/null +++ b/lib/talloc/script/mksigs.pl @@ -0,0 +1,178 @@ +#!/usr/bin/perl + +# mksigs.pl - extract signatures from C headers +# +# Copyright (C) Michael Adam 2009 +# +# This program is free software; you can redistribute it and/or modify it +# under the terms of the GNU General Public License as published by the Free +# Software Foundation; either version 3 of the License, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, but WITHOUT +# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for +# more details. +# +# You should have received a copy of the GNU General Public License along with +# this program; if not, see <http://www.gnu.org/licenses/>. + +# USAGE: cat $header_files | mksigs.pl > $signature_file +# +# The header files to parse are read from stdin. +# The output is in a form as produced by gcc with the -aux-info switch +# and printed to stdout. + +use strict; +use warnings; + +my $in_comment = 0; +my $extern_C_block = 0; + +while (my $LINE = <>) { + # find end of started multi-line-comment + if ($in_comment) { + if ($LINE =~ /^.*?\*\/(.*)$/) { + $LINE = $1; + $in_comment = 0; + } else { + # whole line within comment + next; + } + } + + # strip C++-style comments + $LINE =~ s/^(.*?)\/\/.*$/$1/; + + # strip in-line-comments: + while ($LINE =~ /\/\*.*?\*\//) { + $LINE =~ s/\/\*.*?\*\///; + } + + # find starts of multi-line-comments + if ($LINE =~ /^(.*)\/\*/) { + $in_comment = 1; + $LINE = $1; + } + + # skip empty lines + next if $LINE =~ /^\s*$/; + + # remove leading spaces + $LINE =~ s/^\s*(.*)$/$1/; + + # concatenate lines split with "\" (usually macro defines) + while ($LINE =~ /^(.*?)\s+\\$/) { + my $LINE2 = <>; + $LINE = $1; + $LINE2 =~ s/^\s*(.*)$/$1/; + $LINE .= " " . $LINE2; + } + + # remove all preprocessor directives + next if ($LINE =~ /^#/); + + if ($LINE =~ /^extern\s+"C"\s+\{/) { + $extern_C_block = 1; + next; + } + + if (($LINE =~ /^[^\{]*\}/) and $extern_C_block) { + $extern_C_block = 0; + next; + } + + $LINE =~ s/^extern\s//; + + # concatenate braces stretched over multiple lines + # (from structs or enums) + my $REST = $LINE; + my $braces = 0; + while (($REST =~ /[\{\}]/) or ($braces)) { + while ($REST =~ /[\{\}]/) { + # collect opening + while ($REST =~ /^[^\{\}]*\{(.*)$/) { + $braces++; + $REST = $1; + } + + # collect closing + while ($REST =~ /^[^\{\}]*\}(.*)$/) { + $braces--; + $REST = $1; + } + } + + # concatenate if not balanced + if ($braces) { + if (my $LINE2 = <>) { + $LINE2 =~ s/^\s*(.*)$/$1/; + chomp($LINE); + $LINE .= " " . $LINE2; + chomp $REST; + $REST .= " " . $LINE2; + } else { + print "ERROR: unbalanced braces ($braces)\n"; + last; + } + } + } + + next if ($LINE =~ /^typedef\s/); + next if ($LINE =~ /^enum\s+[^\{\(]+\s+\{/); + next if ($LINE =~ /^struct\s+[^\{\(]+\s+\{.*\}\s*;/); + + # concetenate function prototypes that stretch over multiple lines + $REST = $LINE; + my $parenthesis = 0; + while (($REST =~ /[\(\)]/) or ($parenthesis)) { + while ($REST =~ /[\(\)]/) { + # collect opening + while ($REST =~ /^[^\(\)]*\((.*)$/) { + $parenthesis++; + $REST = $1; + } + + # collect closing + while ($REST =~ /^[^\(\)]*\)(.*)$/) { + $parenthesis--; + $REST = $1; + } + } + + # concatenate if not balanced + if ($parenthesis) { + if (my $LINE2 = <>) { + $LINE2 =~ s/^\s*(.*)$/$1/; + chomp($LINE); + $LINE .= " " . $LINE2; + chomp($REST); + $REST .= " " . $LINE2; + } else { + print "ERROR: unbalanced parantheses ($parenthesis)\n"; + last; + } + } + } + + # remove trailing spaces + $LINE =~ s/(.*?)\s*$/$1/; + + $LINE =~ s/^(.*\))\s+PRINTF_ATTRIBUTE\(.*\);$/$1;/; + + # remove parameter names - slightly too coarse probably + $LINE =~ s/([\s\(]\*?)[_0-9a-zA-Z]+\s*([,\)])/$1$2/g; + + # remedy (void) from last line + $LINE =~ s/\(\)/(void)/g; + + # normalize spaces + $LINE =~ s/\s*\)\s*/)/g; + $LINE =~ s/\s*\(\s*/ (/g; + $LINE =~ s/\s*,\s*/, /g; + + # normalize unsigned + $LINE =~ s/([\s,\(])unsigned([,\)])/$1unsigned int$2/g; + + print $LINE . "\n"; +} |