#!/usr/bin/perl # Simple script for generating prototypes for C functions # Written by Jelmer Vernooij # based on the original mkproto.sh by Andrew Tridgell use strict; # don't use warnings module as it is not portable enough # use warnings; use Getopt::Long; use File::Basename; use File::Path; ##################################################################### # read a file into a string my $public_file = undef; my $private_file = undef; my $public_define = undef; my $private_define = undef; my $_public = ""; my $_private = ""; my $public_data = \$_public; my $private_data = \$_private; my $builddir = undef; my $srcdir = undef; my $always_create = $ENV{MK_PROTO_ALWAYS_CREATE}; sub public($) { my ($d) = @_; $$public_data .= $d; } sub private($) { my ($d) = @_; $$private_data .= $d; } sub usage() { print "Usage: mkproto.pl [options] [c files]\n"; print "OPTIONS:\n"; print " --public=FILE Write prototypes for public functions to FILE\n"; print " --private=FILE Write prototypes for private functions to FILE\n"; print " --define=DEF Use DEF to check whether header was already included\n"; print " --public-define=DEF Same as --define, but just for public header\n"; print " --private-define=DEF Same as --define, but just for private header\n"; print " --srcdir=path Read files relative to this directory\n"; print " --builddir=path Write file relative to this directory\n"; print " --always-create Always create new proto headers, even if the content hasn't changed\n"; print " --help Print this help message\n\n"; exit 0; } GetOptions( 'public=s' => sub { my ($f,$v) = @_; $public_file = $v; }, 'private=s' => sub { my ($f,$v) = @_; $private_file = $v; }, 'define=s' => sub { my ($f,$v) = @_; $public_define = $v; $private_define = "$v\_PRIVATE"; }, 'public-define=s' => \$public_define, 'private-define=s' => \$private_define, 'srcdir=s' => sub { my ($f,$v) = @_; $srcdir = $v; }, 'builddir=s' => sub { my ($f,$v) = @_; $builddir = $v; }, 'always-create' => \$always_create, 'help' => \&usage ) or exit(1); if (not defined($public_define) and defined($public_file)) { $public_define = ".." . uc($public_file) . "__"; $public_define =~ tr{./}{__}; } elsif (not defined($public_define)) { $public_define = '_PROTO_H_'; } if (not defined($private_define) and defined($private_file)) { $private_define = "__" . uc($private_file) . "__"; $private_define =~ tr{./}{__}; } elsif (not defined($public_define)) { $public_define = '_PROTO_H_'; } if ((defined($private_file) and defined($public_file) and ($private_file eq $public_file)) or (not defined($private_file) and not defined($public_file))) { $private_data = $public_data; } sub file_load($) { my($filename) = shift; local(*INPUTFILE); open(INPUTFILE, $filename) || return undef; my($saved_delim) = $/; undef $/; my($data) = <INPUTFILE>; close(INPUTFILE); $/ = $saved_delim; return $data; } sub print_header($$) { my ($file, $header_name) = @_; $file->("#ifndef $header_name\n"); $file->("#define $header_name\n\n"); $file->("#undef _PRINTF_ATTRIBUTE\n"); $file->("#define _PRINTF_ATTRIBUTE(a1, a2) PRINTF_ATTRIBUTE(a1, a2)\n"); $file->("/* This file was automatically generated by mkproto.pl. DO NOT EDIT */\n\n"); } sub print_footer($$) { my ($file, $header_name) = @_; $file->("#undef _PRINTF_ATTRIBUTE\n"); $file->("#define _PRINTF_ATTRIBUTE(a1, a2)\n"); $file->("\n#endif /* $header_name */\n\n"); } sub handle_loadparm($$) { my ($file,$line) = @_; if ($line =~ /^_PUBLIC_ FN_(GLOBAL|LOCAL)_(CONST_STRING|STRING|BOOL|CHAR|INTEGER|LIST)\((\w+),.*\)/o) { my $scope = $1; my $type = $2; my $name = $3; my %tmap = ( "BOOL" => "BOOL ", "CONST_STRING" => "const char *", "STRING" => "const char *", "INTEGER" => "int ", "CHAR" => "char ", "LIST" => "const char **", ); my %smap = ( "GLOBAL" => "void", "LOCAL" => "int " ); $file->("$tmap{$type}$name($smap{$scope});\n"); } } sub process_file($$$) { my ($public_file, $private_file, $filename) = @_; $filename =~ s/\.o$/\.c/g; if (!open(FH, "< $builddir/$filename")) { open(FH, "< $srcdir/$filename") || die "Failed to open $filename"; } $private_file->("\n/* The following definitions come from $filename */\n\n"); while (my $line = <FH>) { my $target = \&private; my $is_public = 0; # these are ordered for maximum speed next if ($line =~ /^\s/); next unless ($line =~ /\(/); next if ($line =~ /^\/|[;]/); if ($line =~ /^_PUBLIC_ FN_/) { handle_loadparm($public_file, $line); next; } if ($line =~ /^_PUBLIC_[\t ]/) { $target = \&public; $is_public = 1; } next unless ( $is_public || $line =~ / ^void|^BOOL|^int|^struct|^char|^const|^\w+_[tT]\s|^uint|^unsigned|^long| ^NTSTATUS|^ADS_STATUS|^enum\s.*\(|^DATA_BLOB|^WERROR|^XFILE|^FILE|^DIR| ^double|^TDB_CONTEXT|^TDB_DATA|^TALLOC_CTX|^NTTIME|^FN_|^init_module| ^GtkWidget|^GType|^smb_ucs2_t /xo); next if ($line =~ /^int\s*main/); if ( $line =~ /\(.*\)\s*$/o ) { chomp $line; $target->("$line;\n"); next; } $target->($line); while ($line = <FH>) { if ($line =~ /\)\s*$/o) { chomp $line; $target->("$line;\n"); last; } $target->($line); } } close(FH); } print_header(\&public, $public_define); if ($public_file ne $private_file) { print_header(\&private, $private_define); private("/* this file contains prototypes for functions that " . "are private \n * to this subsystem or library. These functions " . "should not be \n * used outside this particular subsystem! */\n\n"); public("/* this file contains prototypes for functions that " . "are part of \n * the public API of this subsystem or library. */\n\n"); } public("#ifndef _PUBLIC_\n#define _PUBLIC_\n#endif\n\n"); process_file(\&public, \&private, $_) foreach (@ARGV); print_footer(\&public, $public_define); if ($public_file ne $private_file) { print_footer(\&private, $private_define); } if (not defined($public_file)) { print STDOUT $$public_data; } if (not defined($private_file) and defined($public_file)) { print STDOUT $$private_data; } my $old_public_data = file_load($public_file); my $old_private_data = file_load($private_file); if (defined($always_create) or not defined($old_public_data) or ($old_public_data ne $$public_data)) { mkpath(dirname($public_file), 0, 0755); open(PUBLIC, ">$public_file") or die("Can't open `$public_file': $!"); print PUBLIC "$$public_data"; close(PUBLIC); } if (($public_file ne $private_file) and (defined($always_create) or not defined($old_private_data) or ($old_private_data ne $$private_data))) { mkpath(dirname($private_file), 0, 0755); open(PRIVATE, ">$private_file") or die("Can't open `$private_file': $!"); print PRIVATE "$$private_data"; close(PRIVATE); }