#!/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
# 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.
-chdir(dirname($0));
-($file = basename($0)) =~ s/\.PL$//;
-$file =~ s/\.pl$//
- if ($Config{'osname'} eq 'VMS' or
- $Config{'osname'} eq 'OS2'); # "case-forgiving"
+$origdir = cwd;
+chdir dirname($0);
+$file = basename($0, '.PL');
+$file .= '.com' if $^O eq 'VMS';
open OUT,">$file" or die "Can't create $file: $!";
# You can use $Config{...} to use Configure variables.
print OUT <<"!GROK!THIS!";
-$Config{'startperl'}
- eval 'exec perl -S \$0 "\$@"'
- if 0;
-
-'di ';
-'ds 00 \"';
-'ig 00 ';
-
-\$perlincl = "$Config{archlibexp}";
-
+$Config{startperl}
+ eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
+ if \$running_under_some_shell;
!GROK!THIS!
# In the following, perl variables are not expanded during extraction.
print OUT <<'!NO!SUBS!';
-chdir '/usr/include' || die "Can't cd /usr/include";
+use strict;
+
+use Config;
+use File::Path qw(mkpath);
+use Getopt::Std;
+
+# Make sure read permissions for all are set:
+if (defined umask && (umask() & 0444)) {
+ umask (umask() & ~0444);
+}
+
+getopts('Dd:rlhaQe');
+use vars qw($opt_D $opt_d $opt_r $opt_l $opt_h $opt_a $opt_Q $opt_e);
+die "-r and -a options are mutually exclusive\n" if ($opt_r and $opt_a);
+my @inc_dirs = inc_dirs() if $opt_a;
+
+my $Exit = 0;
-@isatype = split(' ',<<END);
+my $Dest_dir = $opt_d || $Config{installsitearch};
+die "Destination directory $Dest_dir doesn't exist or isn't a directory\n"
+ unless -d $Dest_dir;
+
+my @isatype = split(' ',<<END);
char uchar u_char
short ushort u_short
int uint u_int
long ulong u_long
- FILE
+ FILE key_t caddr_t
END
+my %isatype;
@isatype{@isatype} = (1) x @isatype;
-$inif = 0;
+my $inif = 0;
+my %Is_converted;
+my %bad_file = ();
@ARGV = ('-') unless @ARGV;
-foreach $file (@ARGV) {
+build_preamble_if_necessary();
+
+sub reindent($) {
+ my($text) = shift;
+ $text =~ s/\n/\n /g;
+ $text =~ s/ /\t/g;
+ $text;
+}
+
+my ($t, $tab, %curargs, $new, $eval_index, $dir, $name, $args, $outfile);
+my ($incl, $incl_type, $next);
+while (defined (my $file = next_file())) {
+ if (-l $file and -d $file) {
+ link_if_possible($file) if ($opt_l);
+ next;
+ }
+
+ # Recover from header files with unbalanced cpp directives
+ $t = '';
+ $tab = 0;
+
+ # $eval_index goes into ``#line'' directives, to help locate syntax errors:
+ $eval_index = 1;
+
if ($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 = $1;
- if (!-d "$perlincl/$dir") {
- mkdir("$perlincl/$dir",0777);
- }
- }
- open(IN,"$file") || ((warn "Can't open $file: $!\n"),next);
- open(OUT,">$perlincl/$outfile") || die "Can't create $outfile: $!\n";
- }
- while (<IN>) {
- chop;
- while (/\\$/) {
- chop;
- $_ .= <IN>;
- chop;
+ mkpath "$Dest_dir/$dir";
}
- if (s:/\*:\200:g) {
- s:\*/:\201:g;
- s/\200[^\201]*\201//g; # delete single line comments
- if (s/\200.*//) { # begin multi-line comment?
- $_ .= '/*';
- $_ .= <IN>;
- redo;
+
+ if ($opt_a) { # automagic mode: locate header file in @inc_dirs
+ foreach (@inc_dirs) {
+ chdir $_;
+ last if -f $file;
}
}
- if (s/^#\s*//) {
+
+ open(IN,"$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",
+ "no warnings 'redefine';\n\n";
+
+ while (defined (local $_ = next_line($file))) {
+ if (s/^\s*\#\s*//) {
if (s/^define\s+(\w+)//) {
$name = $1;
$new = '';
s/\s+$//;
+ s/\(\w+\s*\(\*\)\s*\(\w*\)\)\s*(-?\d+)/$1/; # (int (*)(foo_t))0
if (s/^\(([\w,\s]*)\)//) {
$args = $1;
+ my $proto = '() ';
if ($args ne '') {
- foreach $arg (split(/,\s*/,$args)) {
+ $proto = '';
+ foreach my $arg (split(/,\s*/,$args)) {
$arg =~ s/^\s*([^\s].*[^\s])\s*$/$1/;
$curargs{$arg} = 1;
}
$args = "local($args) = \@_;\n$t ";
}
s/^\s+//;
- do expr();
- $new =~ s/(["\\])/\\$1/g;
+ expr();
+ $new =~ s/(["\\])/\\$1/g; #"]);
+ $new = reindent($new);
+ $args = reindent($args);
if ($t ne '') {
- $new =~ s/(['\\])/\\$1/g;
- print OUT $t,
- "eval 'sub $name {\n$t ${args}eval \"$new\";\n$t}';\n";
- }
- else {
- print OUT "sub $name {\n ${args}eval \"$new\";\n}\n";
+ $new =~ s/(['\\])/\\$1/g; #']);
+ if ($opt_h) {
+ print OUT $t,
+ "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 ${args}eval q($new);\n$t}' unless defined(\&$name);\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+//;
- do expr();
+ expr();
$new = 1 if $new eq '';
+ $new = reindent($new);
+ $args = reindent($args);
if ($t ne '') {
- $new =~ s/(['\\])/\\$1/g;
- print OUT $t,"eval 'sub $name {",$new,";}';\n";
- }
- else {
- print OUT $t,"sub $name {",$new,";}\n";
+ $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(\&$name);\n";
+ }
+ } else {
+ # Shunt around such directives as `#define FOO FOO':
+ next if " \&$name" eq $new;
+
+ print OUT $t,"unless(defined(\&$name)) {\n sub $name () {\t",$new,";}\n}\n";
}
}
- }
- elsif (/^include\s+<(.*)>/) {
- ($incl = $1) =~ s/\.h$/.ph/;
- print OUT $t,"require '$incl';\n";
- }
- elsif (/^ifdef\s+(\w+)/) {
- print OUT $t,"if (defined &$1) {\n";
+ } elsif (/^(include|import|include_next)\s*[<\"](.*)[>\"]/) {
+ $incl_type = $1;
+ $incl = $2;
+ if (($incl_type eq 'include_next') ||
+ ($opt_e && exists($bad_file{$incl}))) {
+ $incl =~ s/\.h$/.ph/;
+ print OUT ($t,
+ "eval {\n");
+ $tab += 4;
+ $t = "\t" x ($tab / 8) . ' ' x ($tab % 8);
+ print OUT ($t, "my(\@REM);\n");
+ if ($incl_type eq 'include_next') {
+ print OUT ($t,
+ "my(\%INCD) = map { \$INC{\$_} => 1 } ",
+ "(grep { \$_ eq \"$incl\" } ",
+ "keys(\%INC));\n");
+ print OUT ($t,
+ "\@REM = map { \"\$_/$incl\" } ",
+ "(grep { not exists(\$INCD{\"\$_/$incl\"})",
+ " and -f \"\$_/$incl\" } \@INC);\n");
+ } else {
+ print OUT ($t,
+ "\@REM = map { \"\$_/$incl\" } ",
+ "(grep {-r \"\$_/$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");
+ } else {
+ $incl =~ s/\.h$/.ph/;
+ print OUT $t,"require '$incl';\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;
- do expr();
+ 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;
- do expr();
+ 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, "# $1\n";
+ }
+ } elsif(/^\s*(typedef\s*)?enum\s*(\s+[a-zA-Z_]\w*\s*)?/) {
+ until(/\{[^}]*\}.*;/ || /;/) {
+ last unless defined ($next = next_line($file));
+ chomp $next;
+ # drop "#define FOO FOO" in enums
+ $next =~ s/^\s*#\s*define\s+(\w+)\s+\1\s*$//;
+ $_ .= $next;
+ print OUT "# $next\n" if $opt_D;
+ }
+ s/#\s*if.*?#\s*endif//g; # drop #ifdefs
+ s@/\*.*?\*/@@g;
+ s/\s+/ /g;
+ next unless /^\s?(typedef\s?)?enum\s?([a-zA-Z_]\w*)?\s?\{(.*)\}\s?([a-zA-Z_]\w*)?\s?;/;
+ (my $enum_subs = $3) =~ s/\s//g;
+ my @enum_subs = split(/,/, $enum_subs);
+ my $enum_val = -1;
+ foreach my $enum (@enum_subs) {
+ my ($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;
+ if ($opt_e && exists($bad_file{$file})) {
+ unlink($Dest_dir . '/' . $outfile);
+ $next = '';
+ } else {
+ print OUT "1;\n";
+ queue_includes_from($file) if ($opt_a);
+ }
}
+if ($opt_e && (scalar(keys %bad_file) > 0)) {
+ warn "Was unable to convert the following files:\n";
+ warn "\t" . join("\n\t",sort(keys %bad_file)) . "\n";
+}
+
+exit $Exit;
+
sub expr {
+ my $joined_args;
+ if(keys(%curargs)) {
+ $joined_args = join('|', keys(%curargs));
+ }
while ($_ ne '') {
+ 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-fA-F]+)// && do {$new .= $1; next;};
- s/^(\d+)// && do {$new .= $1; next;};
+ s/^0X([0-9A-F]+)[UL]*//i
+ && do {my $hex = $1;
+ $hex =~ s/^0+//;
+ if (length $hex > 8 && !$Config{use64bitint}) {
+ # Croak if nv_preserves_uv_bits < 64 ?
+ $new .= hex(substr($hex, -8)) +
+ 2**32 * hex(substr($hex, 0, -8));
+ # The above will produce "errorneus" code
+ # if the hex constant was e.g. inside UINT64_C
+ # macro, but then again, h2ph is an approximation.
+ } else {
+ $new .= lc("0x$hex");
+ }
+ next;};
+ s/^(-?\d+\.\d+E[-+]?\d+)[FL]?//i && do {$new .= $1; next;};
+ s/^(\d+)\s*[LU]*//i && do {$new .= $1; next;};
s/^("(\\"|[^"])*")// && do {$new .= $1; next;};
s/^'((\\"|[^"])*)'// && do {
if ($curargs{$1}) {
$new .= "ord('\$$1')";
- }
- else {
+ } else {
$new .= "ord('$1')";
}
next;
};
- s/^sizeof\s*\(([^)]+)\)/{$1}/ && do {
- $new .= '$sizeof';
- next;
+ # replace "sizeof(foo)" with "{foo}"
+ # also, remove * (C dereference operator) to avoid perl syntax
+ # problems. Where the %sizeof array comes from is anyone's
+ # guess (c2ph?), but this at least avoids fatal syntax errors.
+ # Behavior is undefined if sizeof() delimiters are unbalanced.
+ # This code was modified to able to handle constructs like this:
+ # sizeof(*(p)), which appear in the HP-UX 10.01 header files.
+ s/^sizeof\s*\(// && do {
+ $new .= '$sizeof';
+ my $lvl = 1; # already saw one open paren
+ # tack { on the front, and skip it in the loop
+ $_ = "{" . "$_";
+ my $index = 1;
+ # find balanced closing paren
+ while ($index <= length($_) && $lvl > 0) {
+ $lvl++ if substr($_, $index, 1) eq "(";
+ $lvl-- if substr($_, $index, 1) eq ")";
+ $index++;
+ }
+ # tack } on the end, replacing )
+ substr($_, $index - 1, 1) = "}";
+ # remove pesky * operators within the sizeof argument
+ substr($_, 0, $index - 1) =~ s/\*//g;
+ next;
+ };
+ # Eliminate typedefs
+ /\(([\w\s]+)[\*\s]*\)\s*[\w\(]/ && do {
+ foreach (split /\s+/, $1) { # Make sure all the words are types,
+ last unless ($isatype{$_} or $_ eq 'struct' or $_ eq 'union');
+ }
+ s/\([\w\s]+[\*\s]*\)// && next; # then eliminate them.
+ };
+ # struct/union member, including arrays:
+ s/^([_A-Z]\w*(\[[^\]]+\])?((\.|->)[_A-Z]\w*(\[[^\]]+\])?)+)//i && do {
+ my $id = $1;
+ $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 = $1;
- if ($id eq 'struct') {
+ my $id = $1;
+ if ($id eq 'struct' || $id eq 'union') {
s/^\s+(\w+)//;
$id .= ' ' . $1;
$isatype{$id} = 1;
- }
- elsif ($id eq 'unsigned') {
- s/^\s+(\w+)//;
- $id .= ' ' . $1;
+ } elsif ($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 (/^\(/) {
- s/^\((\w),/("$1",/ if $id =~ /^_IO[WR]*$/i; # cheat
+ } elsif (/^\s*\(/) {
+ s/^\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 {
+ $new .= q(').$id.q(');
}
- else {
- $new .= $id;
- }
- }
- else {
- if ($inif && $new !~ /defined\($/) {
+ } else {
+ if ($inif && $new !~ /defined\s*\($/) {
$new .= '(defined(&' . $id . ') ? &' . $id . ' : 0)';
- } else {
+ } elsif (/^\[/) {
+ $new .= " \$$id";
+ } else {
$new .= ' &' . $id;
}
}
next;
};
- s/^(.)// && do {$new .= $1; next;};
+ s/^(.)// && do { if ($1 ne '#') { $new .= $1; } next;};
+ }
+}
+
+
+sub next_line
+{
+ my $file = shift;
+ my ($in, $out);
+ my $pre_sub_tri_graphs = 1;
+
+ READ: while (not eof IN) {
+ $in .= <IN>;
+ chomp $in;
+ next unless length $in;
+
+ while (length $in) {
+ if ($pre_sub_tri_graphs) {
+ # Preprocess all tri-graphs
+ # including things stuck in quoted string constants.
+ $in =~ s/\?\?=/#/g; # | ??=| #|
+ $in =~ s/\?\?\!/|/g; # | ??!| ||
+ $in =~ s/\?\?'/^/g; # | ??'| ^|
+ $in =~ s/\?\?\(/[/g; # | ??(| [|
+ $in =~ s/\?\?\)/]/g; # | ??)| ]|
+ $in =~ s/\?\?\-/~/g; # | ??-| ~|
+ $in =~ s/\?\?\//\\/g; # | ??/| \|
+ $in =~ s/\?\?</{/g; # | ??<| {|
+ $in =~ s/\?\?>/}/g; # | ??>| }|
+ }
+ if ($in =~ /^\#ifdef __LANGUAGE_PASCAL__/) {
+ # Tru64 disassembler.h evilness: mixed C and Pascal.
+ while (<IN>) {
+ last if /^\#endif/;
+ }
+ next READ;
+ }
+ if ($in =~ /^extern inline / && # Inlined assembler.
+ $^O eq 'linux' && $file =~ m!(?:^|/)asm/[^/]+\.h$!) {
+ while (<IN>) {
+ last if /^}/;
+ }
+ next READ;
+ }
+ if ($in =~ s/\\$//) { # \-newline
+ $out .= ' ';
+ next READ;
+ } elsif ($in =~ s/^([^"'\\\/]+)//) { # Passthrough
+ $out .= $1;
+ } elsif ($in =~ s/^(\\.)//) { # \...
+ $out .= $1;
+ } elsif ($in =~ /^'/) { # '...
+ if ($in =~ s/^('(\\.|[^'\\])*')//) {
+ $out .= $1;
+ } else {
+ next READ;
+ }
+ } elsif ($in =~ /^"/) { # "...
+ if ($in =~ s/^("(\\.|[^"\\])*")//) {
+ $out .= $1;
+ } else {
+ next READ;
+ }
+ } elsif ($in =~ s/^\/\/.*//) { # //...
+ # fall through
+ } elsif ($in =~ m/^\/\*/) { # /*...
+ # C comment removal adapted from perlfaq6:
+ if ($in =~ s/^\/\*[^*]*\*+([^\/*][^*]*\*+)*\///) {
+ $out .= ' ';
+ } else { # Incomplete /* */
+ next READ;
+ }
+ } elsif ($in =~ s/^(\/)//) { # /...
+ $out .= $1;
+ } elsif ($in =~ s/^([^\'\"\\\/]+)//) {
+ $out .= $1;
+ } elsif ($^O eq 'linux' &&
+ $file =~ m!(?:^|/)linux/byteorder/pdp_endian\.h$! &&
+ $in =~ s!\'T KNOW!!) {
+ $out =~ s!I DON$!I_DO_NOT_KNOW!;
+ } else {
+ if ($opt_e) {
+ warn "Cannot parse $file:\n$in\n";
+ $bad_file{$file} = 1;
+ $in = '';
+ $out = undef;
+ last READ;
+ } else {
+ die "Cannot parse:\n$in\n";
+ }
+ }
+ }
+
+ last READ if $out =~ /\S/;
+ }
+
+ return $out;
+}
+
+
+# Handle recursive subdirectories without getting a grotesquely big stack.
+# Could this be implemented using File::Find?
+sub next_file
+{
+ my $file;
+
+ while (@ARGV) {
+ $file = shift @ARGV;
+
+ if ($file eq '-' or -f $file or -l $file) {
+ return $file;
+ } elsif (-d $file) {
+ if ($opt_r) {
+ expand_glob($file);
+ } else {
+ print STDERR "Skipping directory `$file'\n";
+ }
+ } elsif ($opt_a) {
+ return $file;
+ } else {
+ print STDERR "Skipping `$file': not a file or directory\n";
+ }
}
+
+ return undef;
}
+
+
+# Put all the files in $directory into @ARGV for processing.
+sub expand_glob
+{
+ my ($directory) = @_;
+
+ $directory =~ s:/$::;
+
+ opendir DIR, $directory;
+ foreach (readdir DIR) {
+ next if ($_ eq '.' or $_ eq '..');
+
+ # expand_glob() is going to be called until $ARGV[0] isn't a
+ # directory; so push directories, and unshift everything else.
+ if (-d "$directory/$_") { push @ARGV, "$directory/$_" }
+ else { unshift @ARGV, "$directory/$_" }
+ }
+ closedir DIR;
+}
+
+
+# Given $file, a symbolic link to a directory in the C include directory,
+# make an equivalent symbolic link in $Dest_dir, if we can figure out how.
+# Otherwise, just duplicate the file or directory.
+sub link_if_possible
+{
+ my ($dirlink) = @_;
+ my $target = eval 'readlink($dirlink)';
+
+ if ($target =~ m:^\.\./: or $target =~ m:^/:) {
+ # The target of a parent or absolute link could leave the $Dest_dir
+ # hierarchy, so let's put all of the contents of $dirlink (actually,
+ # the contents of $target) into @ARGV; as a side effect down the
+ # line, $dirlink will get created as an _actual_ directory.
+ expand_glob($dirlink);
+ } else {
+ if (-l "$Dest_dir/$dirlink") {
+ unlink "$Dest_dir/$dirlink" or
+ print STDERR "Could not remove link $Dest_dir/$dirlink: $!\n";
+ }
+
+ if (eval 'symlink($target, "$Dest_dir/$dirlink")') {
+ print "Linking $target -> $Dest_dir/$dirlink\n";
+
+ # Make sure that the link _links_ to something:
+ if (! -e "$Dest_dir/$target") {
+ mkpath("$Dest_dir/$target", 0755) or
+ print STDERR "Could not create $Dest_dir/$target/\n";
+ }
+ } else {
+ print STDERR "Could not symlink $target -> $Dest_dir/$dirlink: $!\n";
+ }
+ }
+}
+
+
+# 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 = <HEADER>)) {
+ while (/\\$/) { # Handle continuation lines
+ chop $line;
+ $line .= <HEADER>;
+ }
+
+ if ($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 = <PREAMBLE>;
+ $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{$_} =~ /^(\d+)U?L{0,2}$/i) {
+ print PREAMBLE
+ "unless (defined &$_) { sub $_() { $1 } }\n\n";
+ } elsif ($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 -> $2\n";
+ }
+ }
+
+ return %define;
+}
+
+
+1;
+
##############################################################################
+__END__
+
+=head1 NAME
+
+h2ph - convert .h C header files to .ph Perl header files
+
+=head1 SYNOPSIS
- # These next few lines are legal in both Perl and nroff.
-
-.00 ; # finish .ig
-
-'di \" finish diversion--previous line must be blank
-.nr nl 0-1 \" fake up transition to first page again
-.nr % 0 \" start at page 1
-'; __END__ ############# From here on it's a standard manual page ############
-.TH H2PH 1 "August 8, 1990"
-.AT 3
-.SH NAME
-h2ph \- convert .h C header files to .ph Perl header files
-.SH SYNOPSIS
-.B h2ph [headerfiles]
-.SH DESCRIPTION
-.I h2ph
+B<h2ph [-d destination directory] [-r | -a] [-l] [headerfiles]>
+
+=head1 DESCRIPTION
+
+I<h2ph>
converts any C header files specified to the corresponding Perl header file
format.
It is most easily run while in /usr/include:
-.nf
cd /usr/include; h2ph * sys/*
-.fi
+or
+
+ cd /usr/include; h2ph * sys/* arpa/* netinet/*
+
+or
+
+ cd /usr/include; h2ph -r -l .
+
+The output files are placed in the hierarchy rooted at Perl's
+architecture dependent library directory. You can specify a different
+hierarchy with a B<-d> switch.
+
If run with no arguments, filters standard input to standard output.
-.SH ENVIRONMENT
+
+=head1 OPTIONS
+
+=over 4
+
+=item -d destination_dir
+
+Put the resulting B<.ph> files beneath B<destination_dir>, instead of
+beneath the default Perl library location (C<$Config{'installsitsearch'}>).
+
+=item -r
+
+Run recursively; if any of B<headerfiles> are directories, then run I<h2ph>
+on all files in those directories (and their subdirectories, etc.). B<-r>
+and B<-a> are mutually exclusive.
+
+=item -a
+
+Run automagically; convert B<headerfiles>, 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
+
+Symbolic links will be replicated in the destination directory. If B<-l>
+is not specified, then links are skipped over.
+
+=item -h
+
+Put ``hints'' in the .ph files which will help in locating problems with
+I<h2ph>. In those cases when you B<require> a B<.ph> file containing syntax
+errors, instead of the cryptic
+
+ [ some error condition ] at (eval mmm) line nnn
+
+you will see the slightly more helpful
+
+ [ some error condition ] at filename.ph line nnn
+
+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<h2ph>.
+
+=item -Q
+
+``Quiet'' mode; don't print out the names of the files being converted.
+
+=back
+
+=head1 ENVIRONMENT
+
No environment variables are used.
-.SH FILES
-/usr/include/*.h
-.br
-/usr/include/sys/*.h
-.br
+
+=head1 FILES
+
+ /usr/include/*.h
+ /usr/include/sys/*.h
+
etc.
-.SH AUTHOR
+
+=head1 AUTHOR
+
Larry Wall
-.SH "SEE ALSO"
+
+=head1 SEE ALSO
+
perl(1)
-.SH DIAGNOSTICS
+
+=head1 DIAGNOSTICS
+
The usual warnings if it can't read or write the files involved.
-.SH BUGS
+
+=head1 BUGS
+
Doesn't construct the %sizeof array for you.
-.PP
+
It doesn't handle all C constructs, but it does attempt to isolate
definitions inside evals so that you can get at the definitions
that it can translate.
-.PP
+
It's only intended as a rough tool.
You may need to dicker with the files produced.
-.ex
+
+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!
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;
https://perl5.git.perl.org / perl5.git / blobdiff