X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=utils%2Fh2ph.PL;h=0b0208b0ca40df1a551fa142f5e3bc0d5a9a3b8f;hb=7ed149c909e2812f62b12bd7d09f4ccfb79e0041;hp=dc2207cc4dc2aa76f6f80824a0f48ec1f94cfa11;hpb=120e76fd67bb8d4383ff9b055e404dfb696f957e;p=p5sagit%2Fp5-mst-13.2.git diff --git a/utils/h2ph.PL b/utils/h2ph.PL index dc2207c..0b0208b 100644 --- a/utils/h2ph.PL +++ b/utils/h2ph.PL @@ -1,7 +1,8 @@ #!/usr/local/bin/perl use Config; -use File::Basename qw(&basename &dirname); +use File::Basename qw(basename dirname); +use Cwd; # List explicitly here the variables you want Configure to # generate. Metaconfig only looks for shell variables, so you @@ -13,6 +14,7 @@ use File::Basename qw(&basename &dirname); # This forces PL files to create target in same directory as PL file. # This is so that make depend always knows where to find PL derivatives. +$origdir = cwd; chdir dirname($0); $file = basename($0, '.PL'); $file .= '.com' if $^O eq 'VMS'; @@ -38,8 +40,9 @@ use Config; use File::Path qw(mkpath); use Getopt::Std; -getopts('d:rlh'); - +getopts('Dd:rlhaQ'); +die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a); +@inc_dirs = inc_dirs() if $opt_a; my $Exit = 0; @@ -60,6 +63,8 @@ $inif = 0; @ARGV = ('-') unless @ARGV; +build_preamble_if_necessary(); + while (defined ($file = next_file())) { if (-l $file and -d $file) { link_if_possible($file) if ($opt_l); @@ -76,17 +81,26 @@ while (defined ($file = next_file())) { if ($file eq '-') { open(IN, "-"); open(OUT, ">-"); - } - else { + } else { ($outfile = $file) =~ s/\.h$/.ph/ || next; - print "$file -> $outfile\n"; + print "$file -> $outfile\n" unless $opt_Q; if ($file =~ m|^(.*)/|) { $dir = $1; mkpath "$Dest_dir/$dir"; } + + if ($opt_a) { # automagic mode: locate header file in @inc_dirs + foreach (@inc_dirs) { + chdir $_; + last if -f $file; + } + } + open(IN,"$file") || (($Exit = 1),(warn "Can't open $file: $!\n"),next); open(OUT,">$Dest_dir/$outfile") || die "Can't create $outfile: $!\n"; } + + print OUT "require '_h2ph_pre.ph';\n\n"; while () { chop; while (/\\$/) { @@ -94,6 +108,8 @@ while (defined ($file = next_file())) { $_ .= ; chop; } + print OUT "# $_\n" if $opt_D; + if (s:/\*:\200:g) { s:\*/:\201:g; s/\200[^\201]*\201//g; # delete single line comments @@ -103,7 +119,7 @@ while (defined ($file = next_file())) { redo; } } - if (s/^#\s*//) { + if (s/^\s*\#\s*//) { if (s/^define\s+(\w+)//) { $name = $1; $new = ''; @@ -122,98 +138,168 @@ while (defined ($file = next_file())) { } s/^\s+//; expr(); - $new =~ s/(["\\])/\\$1/g; + $new =~ s/(["\\])/\\$1/g; #"]); + $new = reindent($new); + $args = reindent($args); if ($t ne '') { - $new =~ s/(['\\])/\\$1/g; + $new =~ s/(['\\])/\\$1/g; #']); if ($opt_h) { print OUT $t, - "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval \"$new\";\n$t}' unless defined(\&$name);\n"; + "eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; $eval_index++; } else { print OUT $t, - "eval 'sub $name $proto\{\n$t ${args}eval \"$new\";\n$t}' unless defined(\&$name);\n"; + "eval 'sub $name $proto\{\n$t ${args}eval q($new);\n$t}' unless defined(\&$name);\n"; } - } - else { - print OUT "unless (defined(\&$name)) {\nsub $name $proto\{\n ${args}eval \"$new\";\n}\n}\n"; + } else { + print OUT "unless(defined(\&$name)) {\n sub $name $proto\{\n\t${args}eval q($new);\n }\n}\n"; } %curargs = (); - } - else { + } else { s/^\s+//; expr(); $new = 1 if $new eq ''; + $new = reindent($new); + $args = reindent($args); if ($t ne '') { - $new =~ s/(['\\])/\\$1/g; + $new =~ s/(['\\])/\\$1/g; #']); + if ($opt_h) { print OUT $t,"eval \"\\n#line $eval_index $outfile\\n\" . 'sub $name () {",$new,";}' unless defined(\&$name);\n"; $eval_index++; } else { print OUT $t,"eval 'sub $name () {",$new,";}' unless defined(\&$name);\n"; } - } - else { - print OUT $t,"unless(defined(\&$name)) {\nsub $name () {",$new,";}\n}\n"; + } else { + # Shunt around such directives as `#define FOO FOO': + next if " \&$name" eq $new; + + print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n"; } } - } - elsif (/^include\s*<(.*)>/) { - ($incl = $1) =~ s/\.h$/.ph/; + } elsif (/^(include|import)\s*[<"](.*)[>"]/) { + ($incl = $2) =~ s/\.h$/.ph/; print OUT $t,"require '$incl';\n"; - } - elsif (/^ifdef\s+(\w+)/) { - print OUT $t,"if (defined &$1) {\n"; + } elsif(/^include_next\s*[<"](.*)[>"]/) { + ($incl = $1) =~ s/\.h$/.ph/; + print OUT ($t, + "eval {\n"); + $tab += 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + print OUT ($t, + "my(\%INCD) = map { \$INC{\$_} => 1 } ", + "(grep { \$_ eq \"$incl\" } keys(\%INC));\n"); + print OUT ($t, + "my(\@REM) = map { \"\$_/$incl\" } ", + "(grep { not exists(\$INCD{\"\$_/$incl\"})", + "and -f \"\$_/$incl\" } \@INC);\n"); + print OUT ($t, + "require \"\$REM[0]\" if \@REM;\n"); + $tab -= 4; + $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); + print OUT ($t, + "};\n"); + print OUT ($t, + "warn(\$\@) if \$\@;\n"); + } elsif (/^ifdef\s+(\w+)/) { + print OUT $t,"if(defined(&$1)) {\n"; $tab += 4; $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - } - elsif (/^ifndef\s+(\w+)/) { - print OUT $t,"if (!defined &$1) {\n"; + } elsif (/^ifndef\s+(\w+)/) { + print OUT $t,"unless(defined(&$1)) {\n"; $tab += 4; $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - } - elsif (s/^if\s+//) { + } elsif (s/^if\s+//) { $new = ''; $inif = 1; expr(); $inif = 0; - print OUT $t,"if ($new) {\n"; + print OUT $t,"if($new) {\n"; $tab += 4; $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - } - elsif (s/^elif\s+//) { + } elsif (s/^elif\s+//) { $new = ''; $inif = 1; expr(); $inif = 0; $tab -= 4; $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - print OUT $t,"}\n${t}elsif ($new) {\n"; + print OUT $t,"}\n elsif($new) {\n"; $tab += 4; $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - } - elsif (/^else/) { + } elsif (/^else/) { $tab -= 4; $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - print OUT $t,"}\n${t}else {\n"; + print OUT $t,"} else {\n"; $tab += 4; $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); - } - elsif (/^endif/) { + } elsif (/^endif/) { $tab -= 4; $t = "\t" x ($tab / 8) . ' ' x ($tab % 8); print OUT $t,"}\n"; + } elsif(/^undef\s+(\w+)/) { + print OUT $t, "undef(&$1) if defined(&$1);\n"; + } elsif(/^error\s+(".*")/) { + print OUT $t, "die($1);\n"; + } elsif(/^error\s+(.*)/) { + print OUT $t, "die(\"", quotemeta($1), "\");\n"; + } elsif(/^warning\s+(.*)/) { + print OUT $t, "warn(\"", quotemeta($1), "\");\n"; + } elsif(/^ident\s+(.*)/) { + print OUT $t, "# $1\n"; + } + } elsif(/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?\{/) { + until(/\}.*?;/) { + chomp($next = ); + $_ .= $next; + print OUT "# $next\n" if $opt_D; + } + s@/\*.*?\*/@@g; + s/\s+/ /g; + /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/; + ($enum_subs = $3) =~ s/\s//g; + @enum_subs = split(/,/, $enum_subs); + $enum_val = -1; + for $enum (@enum_subs) { + ($enum_name, $enum_value) = $enum =~ /^([a-zA-Z_]\w*)(=.+)?$/; + $enum_value =~ s/^=//; + $enum_val = (length($enum_value) ? $enum_value : $enum_val + 1); + if ($opt_h) { + print OUT ($t, + "eval(\"\\n#line $eval_index $outfile\\n", + "sub $enum_name () \{ $enum_val; \}\") ", + "unless defined(\&$enum_name);\n"); + ++ $eval_index; + } else { + print OUT ($t, + "eval(\"sub $enum_name () \{ $enum_val; \}\") ", + "unless defined(\&$enum_name);\n"); + } } } } print OUT "1;\n"; + + $is_converted{$file} = 1; + queue_includes_from($file) if ($opt_a); } exit $Exit; +sub reindent($) { + my($text) = shift; + $text =~ s/\n/\n /g; + $text =~ s/ /\t/g; + $text; +} + sub expr { + if(keys(%curargs)) { + my($joined_args) = join('|', keys(%curargs)); + } while ($_ ne '') { - s/^\&\&// && do { $new .= "&&"; next;}; # handle && operator - s/^\&//; # hack for things that take the address of + s/^\&\&// && do { $new .= " &&"; next;}; # handle && operator + s/^\&([\(a-z\)]+)/$1/i; # hack for things that take the address of s/^(\s+)// && do {$new .= ' '; next;}; s/^(0X[0-9A-F]+)[UL]*//i && do {$new .= lc($1); next;}; s/^(-?\d+\.\d+E[-+]\d+)F?//i && do {$new .= $1; next;}; @@ -222,8 +308,7 @@ sub expr { s/^'((\\"|[^"])*)'// && do { if ($curargs{$1}) { $new .= "ord('\$$1')"; - } - else { + } else { $new .= "ord('$1')"; } next; @@ -260,11 +345,22 @@ sub expr { } s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them. }; - # struct/union member: - s/^([_A-Z]\w*((\.|->)[_A-Z]\w*)+)//i && do { + # struct/union member, including arrays: + s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do { $id = $1; - $id =~ s/(\.|(->))([^\.-]*)/->\{$3\}/g; - $new .= ' ($' . $id . ')'; + $id =~ s/(\.|(->))([^\.\-]*)/->\{$3\}/g; + $id =~ s/\b([^\$])($joined_args)/$1\$$2/g if length($joined_args); + while($id =~ /\[\s*([^\$\&\d\]]+)\]/) { + my($index) = $1; + $index =~ s/\s//g; + if(exists($curargs{$index})) { + $index = "\$$index"; + } else { + $index = "&$index"; + } + $id =~ s/\[\s*([^\$\&\d\]]+)\]/[$index]/; + } + $new .= " (\$$id)"; }; s/^([_a-zA-Z]\w*)// && do { $id = $1; @@ -272,41 +368,33 @@ sub expr { s/^\s+(\w+)//; $id .= ' ' . $1; $isatype{$id} = 1; - } - elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { + } elsif ($id =~ /^((un)?signed)|(long)|(short)$/) { while (s/^\s+(\w+)//) { $id .= ' ' . $1; } $isatype{$id} = 1; } if ($curargs{$id}) { - $new .= '$' . $id; - } - elsif ($id eq 'defined') { + $new .= "\$$id"; + $new .= '->' if /^[\[\{]/; + } elsif ($id eq 'defined') { $new .= 'defined'; - } - elsif (/^\(/) { + } elsif (/^\(/) { s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat $new .= " &$id"; - } - elsif ($isatype{$id}) { + } elsif ($isatype{$id}) { if ($new =~ /{\s*$/) { $new .= "'$id'"; - } - elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { + } elsif ($new =~ /\(\s*$/ && /^[\s*]*\)/) { $new =~ s/\(\s*$//; s/^[\s*]*\)//; - } - else { + } else { $new .= q(').$id.q('); } - } - else { + } else { if ($inif && $new !~ /defined\s*\($/) { $new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)'; - } - elsif (/^\[/) { - $new .= ' $' . $id; - } - else { + } elsif (/^\[/) { + $new .= " \$$id"; + } else { $new .= ' &' . $id; } } @@ -334,6 +422,8 @@ sub next_file } else { print STDERR "Skipping directory `$file'\n"; } + } elsif ($opt_a) { + return $file; } else { print STDERR "Skipping `$file': not a file or directory\n"; } @@ -388,7 +478,7 @@ sub link_if_possible # Make sure that the link _links_ to something: if (! -e "$Dest_dir/$target") { - mkdir("$Dest_dir/$target", 0755) or + mkpath("$Dest_dir/$target", 0755) or print STDERR "Could not create $Dest_dir/$target/\n"; } } else { @@ -398,6 +488,108 @@ sub link_if_possible } +# Push all #included files in $file onto our stack, except for STDIN +# and files we've already processed. +sub queue_includes_from +{ + my ($file) = @_; + my $line; + + return if ($file eq "-"); + + open HEADER, $file or return; + while (defined($line =
)) { + while (/\\$/) { # Handle continuation lines + chop $line; + $line .=
; + } + + if ($line =~ /^#\s*include\s+<(.*?)>/) { + push(@ARGV, $1) unless $is_converted{$1}; + } + } + close HEADER; +} + + +# Determine include directories; $Config{usrinc} should be enough for (all +# non-GCC?) C compilers, but gcc uses an additional include directory. +sub inc_dirs +{ + my $from_gcc = `$Config{cc} -v 2>&1`; + $from_gcc =~ s:^Reading specs from (.*?)/specs\b.*:$1/include:s; + + length($from_gcc) ? ($from_gcc, $Config{usrinc}) : ($Config{usrinc}); +} + + +# Create "_h2ph_pre.ph", if it doesn't exist or was built by a different +# version of h2ph. +sub build_preamble_if_necessary +{ + # Increment $VERSION every time this function is modified: + my $VERSION = 2; + my $preamble = "$Dest_dir/_h2ph_pre.ph"; + + # Can we skip building the preamble file? + if (-r $preamble) { + # Extract version number from first line of preamble: + open PREAMBLE, $preamble or die "Cannot open $preamble: $!"; + my $line = ; + $line =~ /(\b\d+\b)/; + close PREAMBLE or die "Cannot close $preamble: $!"; + + # Don't build preamble if a compatible preamble exists: + return if $1 == $VERSION; + } + + my (%define) = _extract_cc_defines(); + + open PREAMBLE, ">$preamble" or die "Cannot open $preamble: $!"; + print PREAMBLE "# This file was created by h2ph version $VERSION\n"; + + foreach (sort keys %define) { + if ($opt_D) { + print PREAMBLE "# $_=$define{$_}\n"; + } + + if ($define{$_} =~ /^\d+$/) { + print PREAMBLE + "unless (defined &$_) { sub $_() { $define{$_} } }\n\n"; + } elsif ($define{$_} =~ /^\w+$/) { + print PREAMBLE + "unless (defined &$_) { sub $_() { &$define{$_} } }\n\n"; + } else { + print PREAMBLE + "unless (defined &$_) { sub $_() { \"", + quotemeta($define{$_}), "\" } }\n\n"; + } + } + close PREAMBLE or die "Cannot close $preamble: $!"; +} + + +# %Config contains information on macros that are pre-defined by the +# system's compiler. We need this information to make the .ph files +# function with perl as the .h files do with cc. +sub _extract_cc_defines +{ + my %define; + my $allsymbols = join " ", @Config{ccsymbols, cppsymbols, cppccsymbols}; + + # Split compiler pre-definitions into `key=value' pairs: + foreach (split /\s+/, $allsymbols) { + /(.+?)=(.+)/ and $define{$1} = $2; + + if ($opt_D) { + print STDERR "$_: $1 -> $2\n"; + } + } + + return %define; +} + + 1; ############################################################################## @@ -409,7 +601,7 @@ h2ph - convert .h C header files to .ph Perl header files =head1 SYNOPSIS -B +B =head1 DESCRIPTION @@ -442,7 +634,15 @@ beneath the default Perl library location (C<$Config{'installsitsearch'}>). =item -r Run recursively; if any of B are directories, then run I -on all files in those directories (and their subdirectories, etc.). +on all files in those directories (and their subdirectories, etc.). B<-r> +and B<-a> are mutually exclusive. + +=item -a + +Run automagically; convert B, as well as any B<.h> files +which they include. This option will search for B<.h> files in all +directories which your C compiler ordinarily uses. B<-a> and B<-r> are +mutually exclusive. =item -l @@ -463,6 +663,15 @@ you will see the slightly more helpful However, the B<.ph> files almost double in size when built using B<-h>. +=item -D + +Include the code from the B<.h> file as a comment in the B<.ph> file. +This is primarily used for debugging I. + +=item -Q + +``Quiet'' mode; don't print out the names of the files being converted. + =back =head1 ENVIRONMENT @@ -499,6 +708,24 @@ that it can translate. It's only intended as a rough tool. You may need to dicker with the files produced. +Doesn't run with C + +You have to run this program by hand; it's not run as part of the Perl +installation. + +Doesn't handle complicated expressions built piecemeal, a la: + + enum { + FIRST_VALUE, + SECOND_VALUE, + #ifdef ABC + THIRD_VALUE + #endif + }; + +Doesn't necessarily locate all of your C compiler's internally-defined +symbols. + =cut !NO!SUBS! @@ -506,3 +733,4 @@ You may need to dicker with the files produced. close OUT or die "Can't close $file: $!"; chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; +chdir $origdir;