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1 : #-*- Perl -*-
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2
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3 ### make-mswin-unicode --- generate Unicode-encapsulation code for MS Windows
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4
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5 ## Copyright (C) 2001, 2002 Ben Wing.
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6
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7 ## Author: Ben Wing <ben@xemacs.org>
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8 ## Maintainer: Ben Wing <ben@xemacs.org>
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9 ## Current Version: 1.0, August 24, 2001
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10
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11 ## This file is part of XEmacs.
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12
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13 ## XEmacs is free software; you can redistribute it and/or modify it
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14 ## under the terms of the GNU General Public License as published by
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15 ## the Free Software Foundation; either version 2, or (at your option)
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16 ## any later version.
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17
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18 ## XEmacs is distributed in the hope that it will be useful, but
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19 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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20 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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21 ## General Public License for more details.
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22
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23 ## You should have received a copy of the GNU General Public License
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24 ## along with XEmacs; see the file COPYING. If not, write to the Free
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25 ## Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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26 ## 02111-1307, USA.
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27
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28 eval 'exec perl -w -S $0 ${1+"$@"}'
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29 if 0;
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30
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31 use strict;
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32 use File::Basename;
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33 use Getopt::Long;
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34
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35 my ($myName, $myPath) = fileparse ($0);
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36
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37 my $usage="
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38 Usage: $myName [--c-output FILE] [--h-output FILE] [--help] [FILES ...]
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39
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40 The purpose of this script is to auto-generate Unicode-encapsulation
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41 code for MS Windows library functions that come in two versions (ANSI
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42 and Unicode). The MS Windows header files provide a way of
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43 automatically calling the right version, but only at compile-time,
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44 which is *NOT* sufficient for any real-world program. The solution is
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45 run-time Unicode encapsulation, which is not conceptually difficult
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46 but is time-consuming, and is not supported standardly only due to
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47 evil marketing decisions made by Microsoft. See src/intl-win32.c
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48 for more information.
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49
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50 This script processes the specified files, looking for commands
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51 indicating library routines to Unicode-encapsulate, as follows:
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52
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53 Portions of the files that should be processed are enclosed in lines
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54 consisting only of the words \"begin-unicode-encapsulation-script\"
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55 and \"end-unicode-encapsulation-script\". More than one section can
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56 occur in a single file. Processed lines begin with a command word,
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57 followed by one or more args (no quotes are necessary for spaces):
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58
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59 dir sets the directory for include files.
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60 file specifies a file to start reading from.
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61 yes indicates a function to be automatically Unicode-encapsulated.
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62 (All parameters either need no special processing or are LPTSTR or
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63 LPCTSTR.)
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64 soon indicates a function that should be automatically Unicode-encapsulated,
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65 but we're not ready to process it yet.
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66 no indicates a function we don't support (it will be #defined to cause
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67 a compile error, with the text after the function included in the
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68 erroneous definition to indicate why we don't support it).
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69 skip indicates a function we support manually; only a comment about this
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70 will be generated.
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71 split indicates a function with a split structure (different versions
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72 for Unicode and ANSI), but where the only difference is in pointer
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73 types, and the actual size does not differ. The structure name
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74 should follow the function name, and it will be automatically
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75 Unicode-encapsulated with appropriate casts.
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76 begin-bracket indicates a #if statement to be inserted here.
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77 end-bracket indicates the corresponding #endif statement.
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78 blank lines and lines beginning with // are ignored.
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79 ";
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80
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81 # ------------------ process command-line options ------------------
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82
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83 my %options;
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84 my @SAVE_ARGV = @ARGV;
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85
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86 $Getopt::Long::ignorecase = 0;
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87 &GetOptions (
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88 \%options,
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89 'c-output=s',
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90 'h-output=s',
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91 'help',
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92 );
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93
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94 die $usage if $options{"help"};
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95
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96 my $in_script;
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97 my $slurp;
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98
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99 my ($cout, $hout) = ($options{"c-output"}, $options{"h-output"});
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100
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101 open (COUT, ">$cout") or die "Can't open C output file $cout: $!";
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102 open (HOUT, ">$hout") or die "Can't open C output file $hout: $!";
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103
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104 select (STDOUT); $| = 1;
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105
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106 print COUT "/* Automatically-generated Unicode-encapsulation file,
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107 using the command
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108
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109 $myPath$myName @SAVE_ARGV
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110
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111 Do not edit. See `$myName'.
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112 */
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113
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114 #include <config.h>
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115 #include \"lisp.h\"
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116
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117 #include \"syswindows.h\"
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118
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119 ";
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120 print HOUT "/* Automatically-generated Unicode-encapsulation header file.
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121 Do not edit. See `$myName'.
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122 */\n\n";
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123
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124 my %files;
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125 my %processed;
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126 my %bracket;
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127
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128 my $current_file;
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129 my @current_bracket;
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130
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131 while (<>)
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132 {
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133 chomp;
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134
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135 if (/^begin-unicode-encapsulation-script$/)
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136 {
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137 $in_script = 1;
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138 }
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139 elsif (/^end-unicode-encapsulation-script$/)
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140 {
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141 $in_script = 0;
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142 }
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143 elsif ($in_script)
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144 {
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145 next if (m!^//!);
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146 next if (/^[ \t]*$/);
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147 if (/(dir|file|yes|soon|no|skip|split|begin-bracket|end-bracket)(?: (.*))?/)
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148 {
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149 my ($command, $parms) = ($1, $2);
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150 if ($command eq "dir")
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151 {
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152 chdir $parms or die "Can't chdir to $parms: $!";
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153 }
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154 elsif ($command eq "file")
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155 {
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156 $current_file = $parms;
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157 }
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158 elsif ($command eq "begin-bracket")
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159 {
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160 my $current_bracket = $current_bracket[$#current_bracket];
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161 if (defined ($current_bracket))
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162 {
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163 $current_bracket .= "&& $parms";
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164 }
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165 else
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166 {
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167 $current_bracket = "$parms";
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168 }
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169 push @current_bracket, $current_bracket;
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170 }
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171 elsif ($command eq "end-bracket")
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172 {
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173 pop @current_bracket;
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174 }
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175 else
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176 {
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177 my ($fun, $reason) = split /\s+/, $parms, 2;
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178 $files{$current_file}{$fun} = [$command, $reason];
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179 $bracket{$current_file}{$fun} =
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180 $current_bracket[$#current_bracket];
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181 }
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182 }
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183 else
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184 {
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185 print "WARNING: Unknown line $_\n";
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186 }
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187 }
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188 }
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189
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190
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191 foreach my $file (keys %files)
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192 {
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193 $slurp = &FileContents ($file);
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194 print "Processing file $file\n";
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195 print HOUT "\n/* Processing file $file */\n\n";
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196 my $totalspace = 70 - length ("Processing file $file");
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197 $totalspace = 0 if $totalspace < 0;
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198 my $alignspaceleft = $totalspace / 2;
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199 my $alignspaceright = ($totalspace + 1) / 2;
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200 print COUT "
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201 /*----------------------------------------------------------------------*/
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202 /*" . (" " x $alignspaceleft) . "Processing file $file" .
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203 (" " x $alignspaceright) . "*/
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204 /*----------------------------------------------------------------------*/
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205
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206 ";
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207
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208 my ($ws_re, $must_ws_re, $tok_ch) =
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209 ("\\s*", "\\s+", "\\w");
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210 # unfortunately there is no surefire way short of
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211 # parsing all include files for typedefs to
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212 # distinguish types from parameters, and prototypes
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213 # appear in the include files both with and without
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214 # parameters -- the latter kinds appear in a very
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215 # different style and were obviously added later. so
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216 # we rely on the fact that defined types are all
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217 # upper-case, and parameters generally are not, and
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218 # special-case the exceptions.
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219 my $typeword_re =
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220 # note the negative lookahead assertions: the first
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221 # one excludes the words "X" and "Y" from type
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222 # words, since they appear as parameter names in
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223 # CreateWindowEx; the second prevents "void
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224 # *Argument" from being parsed as a type "void *A"
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225 # followed by a parameter "rgument".
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226 "(?:(?!(?:X\\b|Y\\b))(?:unsigned|int|long|short|va_list|[A-Z_0-9]+)(?!${tok_ch}))";
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227 my $typetoken_re = "(?:$typeword_re$ws_re\\**$ws_re)";
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228 my $arg_re = "(?:($typetoken_re+)(${tok_ch}+)?(?: OPTIONAL)?)";
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229 my $fun_re = "(SHSTDAPI_\\(${tok_ch}+\\)|${tok_ch}" . "[A-Za-z_0-9 \t\n\r\f]*?${tok_ch})${ws_re}(${tok_ch}+)W${ws_re}\\(((${ws_re}${arg_re}${ws_re},)*${ws_re}${arg_re}${ws_re})\\);";
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230
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231 # print "regexp: $fun_re\n";
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232 while ($slurp =~ /$fun_re/g)
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233 {
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234 my ($rettype, $fun, $args) = ($1, $2, $3);
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235 $processed{$fun} = 1;
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236 print "Processing: $fun";
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237
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238 my ($command, $reason) = ($files{$file}{$fun}[0], $files{$file}{$fun}[1]);
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239 if (!defined ($command))
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240 {
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241 print " (no command found)\n";
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242 }
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243 else
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244 {
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245 print "\n";
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246 my $bracket = $bracket{$file}{$fun};
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247 if (defined ($bracket))
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248 {
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249 print HOUT "#if $bracket\n";
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250 print COUT "#if $bracket\n\n";
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251 }
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252 if ($command eq "no")
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253 {
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254 if (!defined ($reason))
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255 {
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256 print "WARNING: No reason given for `no' with function $fun\n";
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257 $reason = "";
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258 }
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259
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260 print HOUT "#undef $fun\n";
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261 print HOUT "#define $fun error $reason\n";
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262 print COUT "/* Error if $fun used: $reason */\n\n";
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263 }
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264 elsif ($command eq "skip")
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265 {
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266 if (!defined ($reason))
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267 {
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268 print "WARNING: No reason given for `skip' with function $fun\n";
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269 $reason = "";
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270 }
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271
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272 print HOUT "/* Skipping $fun because $reason */\n";
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273 print COUT "/* Skipping $fun because $reason */\n\n";
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274 }
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275 elsif ($command eq "soon")
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276 {
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277 $reason = "" if !defined ($reason);
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278
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279 print HOUT "/* Not yet: $fun $reason */\n";
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280 print COUT "/* Not yet: $fun $reason */\n\n";
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281 }
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282 else
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283 {
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284 my (@args, %argtype, %ansiarg, %xarg, $split_struct,
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285 $split_rettype);
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286 if ($command eq "split")
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287 {
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288 ($split_struct, $reason) = split /\s+/, $reason, 2;
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289 }
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290 my $argno = 0;
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291 while ($args =~ /$arg_re/g)
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292 {
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293 $argno++;
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294 my ($argtype, $argname) = ($1, $2);
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295 $argtype =~ s/\s*$//;
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296 next if $argtype eq "void" || $argtype eq "VOID";
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297 $argname = "arg$argno" if !defined ($argname);
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298 $argtype{$argname} = $argtype;
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299 $ansiarg{$argname} = $argtype;
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300 $ansiarg{$argname} =~ s/\bLPWSTR\b/LPSTR/;
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301 $ansiarg{$argname} =~ s/\bLPCWSTR\b/LPCSTR/;
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302 $xarg{$argname} = $argtype;
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303 $xarg{$argname} =~ s/\bLPWSTR\b/Extbyte */;
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304 $xarg{$argname} =~ s/\bLPCWSTR\b/const Extbyte */;
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305 if (defined ($split_struct))
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306 {
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307 my $fuck_cperl1 = "\\b${split_struct}W\\b";
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308 my $fuck_cperl2 = "${split_struct}A";
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309 $ansiarg{$argname} =~ s/$fuck_cperl1/$fuck_cperl2/;
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310 }
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311 push @args, $argname;
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312 }
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313 $rettype =~ s/\bSHSTDAPI_\((.*)\)/$1/;
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314 $rettype =~ s/\s*WIN\w*?API\s*//g;
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315 $rettype =~ s/\bAPIENTRY\b//;
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316 $rettype =~ s/\bSHSTDAPI\b/HRESULT/;
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317 if ($rettype =~ /LPC?WSTR/)
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318 {
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319 $split_rettype = 1;
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320 $rettype =~ s/\bLPWSTR\b/Extbyte */;
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321 $rettype =~ s/\bLPCWSTR\b/const Extbyte */;
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322 }
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323 if (defined ($reason))
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324 {
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325 print COUT "/* NOTE: $reason */\n";
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326 }
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327 print COUT "$rettype\nqxe$fun (";
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328 print HOUT "$rettype qxe$fun (";
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329 my $first = 1;
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330 if (!@args)
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331 {
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332 print COUT "void";
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333 print HOUT "void";
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334 }
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335 else
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336 {
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337 foreach my $x (@args)
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338 {
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339 print COUT ", " if !$first;
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340 print HOUT ", " if !$first;
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341 $first = 0;
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342 print COUT "$xarg{$x} $x";
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343 print HOUT "$xarg{$x} $x";
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344 }
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345 }
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346 print HOUT ");\n";
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347 print COUT ")\n{\n if (XEUNICODE_P)\n ";
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348 if ($rettype ne "void" && $rettype ne "VOID")
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349 {
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350 print COUT "return ";
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351 print COUT "($rettype) " if $split_rettype;
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352 }
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353 print COUT "${fun}W (";
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354 $first = 1;
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355 foreach my $x (@args)
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356 {
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357 print COUT ", " if !$first;
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358 $first = 0;
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359 print COUT ($argtype{$x} eq $xarg{$x} ? $x :
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360 "($argtype{$x}) $x");
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361 }
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362 print COUT ");\n else\n ";
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363 if ($rettype ne "void" && $rettype ne "VOID")
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364 {
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365 print COUT "return ";
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366 print COUT "($rettype) " if $split_rettype;
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367 }
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368 print COUT "${fun}A (";
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369 $first = 1;
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370 foreach my $x (@args)
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371 {
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372 print COUT ", " if !$first;
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373 $first = 0;
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374 print COUT ($argtype{$x} eq $ansiarg{$x} ? $x :
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375 "($ansiarg{$x}) $x");
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376 }
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377 print COUT ");\n}\n\n";
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378 }
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379 if (defined ($bracket))
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380 {
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381 print HOUT "#endif /* $bracket */\n";
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382 print COUT "#endif /* $bracket */\n\n";
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383 }
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384 }
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385 }
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386 }
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387
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388 foreach my $file (keys %files)
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389 {
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390 foreach my $fun (keys %{$files{$file}})
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391 {
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392 if (!$processed{$fun} && $files{$file}{$fun}[0] =~ /^(yes|soon|split)$/)
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393 {
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394 print "WARNING: Can't locate prototype for $fun\n";
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395 }
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396 }
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397 }
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398
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399
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400 sub FileContents
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401 {
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402 local $/ = undef;
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403 open (FILE, "< $_[0]") or die "$_[0]: $!";
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404 my $retval = scalar <FILE>;
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405 # must hack away CRLF junk.
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406 $retval =~ s/\r\n/\n/g;
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407 return $retval;
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408 }
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