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parse-headers.pl��0000755��00000020564�14722073407�0007644 0��ustar�00��#!/usr/bin/env perl use strict; use Text::Tabs; use Getopt::Long; use Pod::Usage; my $debug; my $help; my $man; GetOptions( "debug" => \$debug, 'usage\|?' => \$help, 'help' => \$man ) or pod2usage(2); pod2usage(1) if $help; pod2usage(-exitstatus => 0, -verbose => 2) if $man; pod2usage(2) if (scalar @ARGV < 2 \|\| scalar @ARGV > 3); my ($file_in, $file_out, $file_exceptions) = @ARGV; my $data; my %ioctls; my %defines; my %typedefs; my %enums; my %enum_symbols; my %structs; require Data::Dumper if ($debug); # # read the file and get identifiers # my $is_enum = 0; my $is_comment = 0; open IN, $file_in or die "Can't open $file_in"; while (<IN>) { $data .= $_; my $ln = $_; if (!$is_comment) { $ln =~ s,/\.(\/),,g; $is_comment = 1 if ($ln =~ s,/\.,,); } else { if ($ln =~ s,^(.\/),,) { $is_comment = 0; } else { next; } } if ($is_enum && $ln =~ m/^\s([_\w][\w\d_]+)\s[\,=]?/) { my $s = $1; my $n = $1; $n =~ tr/A-Z/a-z/; $n =~ tr/_/-/; $enum_symbols{$s} = "\\ :ref:`$s <$n>`\\ "; $is_enum = 0 if ($is_enum && m/\}/); next; } $is_enum = 0 if ($is_enum && m/\}/); if ($ln =~ m/^\s#\sdefine\s+([_\w][\w\d_]+)\s+_IO/) { my $s = $1; my $n = $1; $n =~ tr/A-Z/a-z/; $ioctls{$s} = "\\ :ref:`$s <$n>`\\ "; next; } if ($ln =~ m/^\s#\sdefine\s+([_\w][\w\d_]+)\s+/) { my $s = $1; my $n = $1; $n =~ tr/A-Z/a-z/; $n =~ tr/_/-/; $defines{$s} = "\\ :ref:`$s <$n>`\\ "; next; } if ($ln =~ m/^\stypedef\s+([_\w][\w\d_]+)\s+(.)\s+([_\w][\w\d_]+);/) { my $s = $2; my $n = $3; $typedefs{$n} = "\\ :c:type:`$n <$s>`\\ "; next; } if ($ln =~ m/^\senum\s+([_\w][\w\d_]+)\s+\{/ \|\| $ln =~ m/^\senum\s+([_\w][\w\d_]+)$/ \|\| $ln =~ m/^\stypedef\senum\s+([_\w][\w\d_]+)\s+\{/ \|\| $ln =~ m/^\stypedef\senum\s+([_\w][\w\d_]+)$/) { my $s = $1; $enums{$s} = "enum :c:type:`$s`\\ "; $is_enum = $1; next; } if ($ln =~ m/^\sstruct\s+([_\w][\w\d_]+)\s+\{/ \|\| $ln =~ m/^\sstruct\s+([[_\w][\w\d_]+)$/ \|\| $ln =~ m/^\stypedef\sstruct\s+([_\w][\w\d_]+)\s+\{/ \|\| $ln =~ m/^\stypedef\sstruct\s+([[_\w][\w\d_]+)$/ ) { my $s = $1; $structs{$s} = "struct :c:type:`$s`\\ "; next; } } close IN; # # Handle multi-line typedefs # my @matches = ($data =~ m/typedef\s+struct\s+\S+?\s\{[^\}]+\}\s(\S+)\s\;/g, $data =~ m/typedef\s+enum\s+\S+?\s\{[^\}]+\}\s(\S+)\s\;/g,); foreach my $m (@matches) { my $s = $m; $typedefs{$s} = "\\ :c:type:`$s`\\ "; next; } # # Handle exceptions, if any # my %def_reftype = ( "ioctl" => ":ref", "define" => ":ref", "symbol" => ":ref", "typedef" => ":c:type", "enum" => ":c:type", "struct" => ":c:type", ); if ($file_exceptions) { open IN, $file_exceptions or die "Can't read $file_exceptions"; while (<IN>) { next if (m/^\s$/ \|\| m/^\s#/); # Parsers to ignore a symbol if (m/^ignore\s+ioctl\s+(\S+)/) { delete $ioctls{$1} if (exists($ioctls{$1})); next; } if (m/^ignore\s+define\s+(\S+)/) { delete $defines{$1} if (exists($defines{$1})); next; } if (m/^ignore\s+typedef\s+(\S+)/) { delete $typedefs{$1} if (exists($typedefs{$1})); next; } if (m/^ignore\s+enum\s+(\S+)/) { delete $enums{$1} if (exists($enums{$1})); next; } if (m/^ignore\s+struct\s+(\S+)/) { delete $structs{$1} if (exists($structs{$1})); next; } if (m/^ignore\s+symbol\s+(\S+)/) { delete $enum_symbols{$1} if (exists($enum_symbols{$1})); next; } # Parsers to replace a symbol my ($type, $old, $new, $reftype); if (m/^replace\s+(\S+)\s+(\S+)\s+(\S+)/) { $type = $1; $old = $2; $new = $3; } else { die "Can't parse $file_exceptions: $_"; } if ($new =~ m/^\:c\:(data\|func\|macro\|type)\:\`(.+)\`/) { $reftype = ":c:$1"; $new = $2; } elsif ($new =~ m/\:ref\:\`(.+)\`/) { $reftype = ":ref"; $new = $1; } else { $reftype = $def_reftype{$type}; } $new = "$reftype:`$old <$new>`"; if ($type eq "ioctl") { $ioctls{$old} = $new if (exists($ioctls{$old})); next; } if ($type eq "define") { $defines{$old} = $new if (exists($defines{$old})); next; } if ($type eq "symbol") { $enum_symbols{$old} = $new if (exists($enum_symbols{$old})); next; } if ($type eq "typedef") { $typedefs{$old} = $new if (exists($typedefs{$old})); next; } if ($type eq "enum") { $enums{$old} = $new if (exists($enums{$old})); next; } if ($type eq "struct") { $structs{$old} = $new if (exists($structs{$old})); next; } die "Can't parse $file_exceptions: $_"; } } if ($debug) { print Data::Dumper->Dump([\%ioctls], [qw(ioctls)]) if (%ioctls); print Data::Dumper->Dump([\%typedefs], [qw(typedefs)]) if (%typedefs); print Data::Dumper->Dump([\%enums], [qw(enums)]) if (%enums); print Data::Dumper->Dump([\%structs], [qw(structs)]) if (%structs); print Data::Dumper->Dump([\%defines], [qw(defines)]) if (%defines); print Data::Dumper->Dump([\%enum_symbols], [qw(enum_symbols)]) if (%enum_symbols); } # # Align block # $data = expand($data); $data = " " . $data; $data =~ s/\n/\n /g; $data =~ s/\n\s+$/\n/g; $data =~ s/\n\s+\n/\n\n/g; # # Add escape codes for special characters # $data =~ s,([\_\`\\<\>\&\\\\:\/\\|\%\$\#\{\}\~\^]),\\$1,g; $data =~ s,DEPRECATED,DEPRECATED,g; # # Add references # my $start_delim = "[ \n\t$\=\\@]"; my $end_delim = "(\\s\|,\|\\\\=\|\\\\:\|\\;\|\\$\|\\}\|\\{)"; foreach my $r (keys %ioctls) { my $s = $ioctls{$r}; $r =~ s,([\_\`\\<\>\&\\\\:\/]),\\\\$1,g; print "$r -> $s\n" if ($debug); $data =~ s/($start_delim)($r)$end_delim/$1$s$3/g; } foreach my $r (keys %defines) { my $s = $defines{$r}; $r =~ s,([\_\`\\<\>\&\\\\:\/]),\\\\$1,g; print "$r -> $s\n" if ($debug); $data =~ s/($start_delim)($r)$end_delim/$1$s$3/g; } foreach my $r (keys %enum_symbols) { my $s = $enum_symbols{$r}; $r =~ s,([\_\`\\<\>\&\\\\:\/]),\\\\$1,g; print "$r -> $s\n" if ($debug); $data =~ s/($start_delim)($r)$end_delim/$1$s$3/g; } foreach my $r (keys %enums) { my $s = $enums{$r}; $r =~ s,([\_\`\\<\>\&\\\\:\/]),\\\\$1,g; print "$r -> $s\n" if ($debug); $data =~ s/enum\s+($r)$end_delim/$s$2/g; } foreach my $r (keys %structs) { my $s = $structs{$r}; $r =~ s,([\_\`\\<\>\&\\\\:\/]),\\\\$1,g; print "$r -> $s\n" if ($debug); $data =~ s/struct\s+($r)$end_delim/$s$2/g; } foreach my $r (keys %typedefs) { my $s = $typedefs{$r}; $r =~ s,([\_\`\\<\>\&\\\\:\/]),\\\\$1,g; print "$r -> $s\n" if ($debug); $data =~ s/($start_delim)($r)$end_delim/$1$s$3/g; } $data =~ s/\\ ([\n\s])/\1/g; # # Generate output file # my $title = $file_in; $title =~ s,./,,; open OUT, "> $file_out" or die "Can't open $file_out"; print OUT ".. -- coding: utf-8; mode: rst --\n\n"; print OUT "$title\n"; print OUT "=" x length($title); print OUT "\n\n.. parsed-literal::\n\n"; print OUT $data; close OUT; __END__ =head1 NAME parse_headers.pl - parse a C file, in order to identify functions, structs, enums and defines and create cross-references to a Sphinx book. =head1 SYNOPSIS B<parse_headers.pl> [<options>] <C_FILE> <OUT_FILE> [<EXCEPTIONS_FILE>] Where <options> can be: --debug, --help or --usage. =head1 OPTIONS =over 8 =item B<--debug> Put the script in verbose mode, useful for debugging. =item B<--usage> Prints a brief help message and exits. =item B<--help> Prints a more detailed help message and exits. =back =head1 DESCRIPTION Convert a C header or source file (C_FILE), into a ReStructured Text included via ..parsed-literal block with cross-references for the documentation files that describe the API. It accepts an optional EXCEPTIONS_FILE with describes what elements will be either ignored or be pointed to a non-default reference. The output is written at the (OUT_FILE). It is capable of identifying defines, functions, structs, typedefs, enums and enum symbols and create cross-references for all of them. It is also capable of distinguish #define used for specifying a Linux ioctl. The EXCEPTIONS_FILE contain two rules to allow ignoring a symbol or to replace the default references by a custom one. Please read Documentation/doc-guide/parse-headers.rst at the Kernel's tree for more details. =head1 BUGS Report bugs to Mauro Carvalho Chehab <mchehab@kernel.org> =head1 COPYRIGHT Copyright (c) 2016 by Mauro Carvalho Chehab <mchehab+samsung@kernel.org>. License GPLv2: GNU GPL version 2 <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. =cut ��

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