1 | #!/usr/local/bin/perl |
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2 | |
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3 | use Config; |
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4 | use File::Basename qw(&basename &dirname); |
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5 | use Cwd; |
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6 | |
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7 | # List explicitly here the variables you want Configure to |
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8 | # generate. Metaconfig only looks for shell variables, so you |
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9 | # have to mention them as if they were shell variables, not |
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10 | # %Config entries. Thus you write |
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11 | # $startperl |
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12 | # to ensure Configure will look for $Config{startperl}. |
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13 | |
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14 | # This forces PL files to create target in same directory as PL file. |
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15 | # This is so that make depend always knows where to find PL derivatives. |
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16 | $origdir = cwd; |
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17 | chdir dirname($0); |
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18 | $file = basename($0, '.PL'); |
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19 | $file .= '.com' if $^O eq 'VMS'; |
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20 | |
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21 | open OUT,">$file" or die "Can't create $file: $!"; |
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22 | |
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23 | print "Extracting $file (with variable substitutions)\n"; |
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24 | |
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25 | # In this section, perl variables will be expanded during extraction. |
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26 | # You can use $Config{...} to use Configure variables. |
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27 | |
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28 | print OUT <<"!GROK!THIS!"; |
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29 | $Config{startperl} |
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30 | eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' |
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31 | if \$running_under_some_shell; |
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32 | !GROK!THIS! |
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33 | |
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34 | # In the following, perl variables are not expanded during extraction. |
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35 | |
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36 | print OUT <<'!NO!SUBS!'; |
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37 | |
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38 | =head1 NAME |
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39 | |
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40 | pl2pm - Rough tool to translate Perl4 .pl files to Perl5 .pm modules. |
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41 | |
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42 | =head1 SYNOPSIS |
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43 | |
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44 | B<pl2pm> F<files> |
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45 | |
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46 | =head1 DESCRIPTION |
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47 | |
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48 | B<pl2pm> is a tool to aid in the conversion of Perl4-style .pl |
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49 | library files to Perl5-style library modules. Usually, your old .pl |
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50 | file will still work fine and you should only use this tool if you |
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51 | plan to update your library to use some of the newer Perl 5 features, |
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52 | such as AutoLoading. |
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53 | |
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54 | =head1 LIMITATIONS |
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55 | |
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56 | It's just a first step, but it's usually a good first step. |
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57 | |
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58 | =head1 AUTHOR |
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59 | |
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60 | Larry Wall <larry@wall.org> |
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61 | |
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62 | =cut |
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63 | |
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64 | while (<DATA>) { |
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65 | chop; |
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66 | $keyword{$_} = 1; |
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67 | } |
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68 | |
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69 | undef $/; |
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70 | $* = 1; |
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71 | while (<>) { |
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72 | $newname = $ARGV; |
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73 | $newname =~ s/\.pl$/.pm/ || next; |
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74 | $newname =~ s#(.*/)?(\w+)#$1\u$2#; |
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75 | if (-f $newname) { |
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76 | warn "Won't overwrite existing $newname\n"; |
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77 | next; |
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78 | } |
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79 | $oldpack = $2; |
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80 | $newpack = "\u$2"; |
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81 | @export = (); |
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82 | print "$oldpack => $newpack\n" if $verbose; |
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83 | |
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84 | s/\bstd(in|out|err)\b/\U$&/g; |
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85 | s/(sub\s+)(\w+)(\s*\{[ \t]*\n)\s*package\s+$oldpack\s*;[ \t]*\n+/${1}main'$2$3/ig; |
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86 | if (/sub\s+main'/) { |
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87 | @export = m/sub\s+main'(\w+)/g; |
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88 | s/(sub\s+)main'(\w+)/$1$2/g; |
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89 | } |
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90 | else { |
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91 | @export = m/sub\s+([A-Za-z]\w*)/g; |
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92 | } |
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93 | @export_ok = grep($keyword{$_}, @export); |
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94 | @export = grep(!$keyword{$_}, @export); |
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95 | @export{@export} = (1) x @export; |
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96 | s/(^\s*);#/$1#/g; |
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97 | s/(#.*)require ['"]$oldpack\.pl['"]/$1use $newpack/; |
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98 | s/(package\s*)($oldpack)\s*;[ \t]*\n+//ig; |
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99 | s/([\$\@%&*])'(\w+)/&xlate($1,"",$2)/eg; |
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100 | s/([\$\@%&*]?)(\w+)'(\w+)/&xlate($1,$2,$3)/eg; |
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101 | if (!/\$\[\s*\)?\s*=\s*[^0\s]/) { |
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102 | s/^\s*(local\s*\()?\s*\$\[\s*\)?\s*=\s*0\s*;[ \t]*\n//g; |
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103 | s/\$\[\s*\+\s*//g; |
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104 | s/\s*\+\s*\$\[//g; |
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105 | s/\$\[/0/g; |
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106 | } |
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107 | s/open\s+(\w+)/open($1)/g; |
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108 | |
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109 | if (s/\bdie\b/croak/g) { |
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110 | $carp = "use Carp;\n"; |
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111 | s/croak "([^"]*)\\n"/croak "$1"/g; |
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112 | } |
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113 | else { |
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114 | $carp = ""; |
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115 | } |
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116 | if (@export_ok) { |
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117 | $export_ok = "\@EXPORT_OK = qw(@export_ok);\n"; |
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118 | } |
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119 | else { |
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120 | $export_ok = ""; |
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121 | } |
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122 | |
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123 | open(PM, ">$newname") || warn "Can't create $newname: $!\n"; |
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124 | print PM <<"END"; |
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125 | package $newpack; |
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126 | require 5.000; |
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127 | require Exporter; |
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128 | $carp |
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129 | \@ISA = qw(Exporter); |
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130 | \@EXPORT = qw(@export); |
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131 | $export_ok |
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132 | $_ |
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133 | END |
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134 | } |
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135 | |
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136 | sub xlate { |
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137 | local($prefix, $pack, $ident) = @_; |
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138 | if ($prefix eq '' && $ident =~ /^(t|s|m|d|ing|ll|ed|ve|re)$/) { |
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139 | "${pack}'$ident"; |
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140 | } |
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141 | elsif ($pack eq "" || $pack eq "main") { |
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142 | if ($export{$ident}) { |
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143 | "$prefix$ident"; |
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144 | } |
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145 | else { |
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146 | "$prefix${pack}::$ident"; |
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147 | } |
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148 | } |
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149 | elsif ($pack eq $oldpack) { |
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150 | "$prefix${newpack}::$ident"; |
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151 | } |
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152 | else { |
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153 | "$prefix${pack}::$ident"; |
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154 | } |
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155 | } |
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156 | __END__ |
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157 | AUTOLOAD |
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158 | BEGIN |
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159 | CORE |
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160 | DESTROY |
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161 | END |
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162 | abs |
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163 | accept |
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164 | alarm |
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165 | and |
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166 | atan2 |
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167 | bind |
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168 | binmode |
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169 | bless |
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170 | caller |
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171 | chdir |
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172 | chmod |
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173 | chop |
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174 | chown |
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175 | chr |
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176 | chroot |
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177 | close |
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178 | closedir |
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179 | cmp |
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180 | connect |
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181 | continue |
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182 | cos |
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183 | crypt |
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184 | dbmclose |
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185 | dbmopen |
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186 | defined |
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187 | delete |
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188 | die |
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189 | do |
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190 | dump |
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191 | each |
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192 | else |
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193 | elsif |
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194 | endgrent |
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195 | endhostent |
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196 | endnetent |
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197 | endprotoent |
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198 | endpwent |
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199 | endservent |
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200 | eof |
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201 | eq |
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202 | eval |
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203 | exec |
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204 | exit |
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205 | exp |
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206 | fcntl |
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207 | fileno |
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208 | flock |
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209 | for |
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210 | foreach |
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211 | fork |
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212 | format |
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213 | formline |
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214 | ge |
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215 | getc |
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216 | getgrent |
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217 | getgrgid |
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218 | getgrnam |
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219 | gethostbyaddr |
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220 | gethostbyname |
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221 | gethostent |
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222 | getlogin |
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223 | getnetbyaddr |
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224 | getnetbyname |
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225 | getnetent |
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226 | getpeername |
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227 | getpgrp |
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228 | getppid |
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229 | getpriority |
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230 | getprotobyname |
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231 | getprotobynumber |
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232 | getprotoent |
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233 | getpwent |
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234 | getpwnam |
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235 | getpwuid |
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236 | getservbyname |
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237 | getservbyport |
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238 | getservent |
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239 | getsockname |
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240 | getsockopt |
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241 | glob |
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242 | gmtime |
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243 | goto |
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244 | grep |
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245 | gt |
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246 | hex |
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247 | if |
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248 | index |
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249 | int |
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250 | ioctl |
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251 | join |
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252 | keys |
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253 | kill |
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254 | last |
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255 | lc |
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256 | lcfirst |
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257 | le |
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258 | length |
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259 | link |
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260 | listen |
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261 | local |
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262 | localtime |
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263 | log |
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264 | lstat |
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265 | lt |
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266 | m |
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267 | mkdir |
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268 | msgctl |
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269 | msgget |
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270 | msgrcv |
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271 | msgsnd |
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272 | my |
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273 | ne |
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274 | next |
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275 | no |
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276 | not |
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277 | oct |
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278 | open |
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279 | opendir |
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280 | or |
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281 | ord |
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282 | pack |
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283 | package |
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284 | pipe |
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285 | pop |
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286 | print |
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287 | printf |
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288 | push |
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289 | q |
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290 | qq |
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291 | quotemeta |
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292 | qw |
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293 | qx |
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294 | rand |
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295 | read |
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296 | readdir |
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297 | readline |
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298 | readlink |
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299 | readpipe |
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300 | recv |
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301 | redo |
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302 | ref |
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303 | rename |
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304 | require |
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305 | reset |
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306 | return |
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307 | reverse |
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308 | rewinddir |
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309 | rindex |
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310 | rmdir |
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311 | s |
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312 | scalar |
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313 | seek |
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314 | seekdir |
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315 | select |
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316 | semctl |
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317 | semget |
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318 | semop |
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319 | send |
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320 | setgrent |
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321 | sethostent |
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322 | setnetent |
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323 | setpgrp |
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324 | setpriority |
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325 | setprotoent |
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326 | setpwent |
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327 | setservent |
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328 | setsockopt |
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329 | shift |
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330 | shmctl |
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331 | shmget |
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332 | shmread |
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333 | shmwrite |
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334 | shutdown |
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335 | sin |
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336 | sleep |
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337 | socket |
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338 | socketpair |
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339 | sort |
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340 | splice |
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341 | split |
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342 | sprintf |
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343 | sqrt |
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344 | srand |
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345 | stat |
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346 | study |
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347 | sub |
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348 | substr |
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349 | symlink |
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350 | syscall |
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351 | sysread |
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352 | system |
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353 | syswrite |
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354 | tell |
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355 | telldir |
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356 | tie |
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357 | time |
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358 | times |
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359 | tr |
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360 | truncate |
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361 | uc |
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362 | ucfirst |
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363 | umask |
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364 | undef |
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365 | unless |
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366 | unlink |
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367 | unpack |
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368 | unshift |
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369 | untie |
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370 | until |
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371 | use |
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372 | utime |
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373 | values |
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374 | vec |
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375 | wait |
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376 | waitpid |
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377 | wantarray |
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378 | warn |
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379 | while |
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380 | write |
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381 | x |
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382 | xor |
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383 | y |
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384 | !NO!SUBS! |
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385 | |
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386 | close OUT or die "Can't close $file: $!"; |
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387 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; |
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388 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; |
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389 | chdir $origdir; |
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