JavaScript-Minifier-1.05/0000755000000000000000000000000010767776751013772 5ustar rootrootJavaScript-Minifier-1.05/t/0000755000000000000000000000000010767776751014235 5ustar rootrootJavaScript-Minifier-1.05/t/JavaScript-Minifier.t0000644000000000000000000000427310767775621020231 0ustar rootroot# Before `make install' is performed this script should be runnable with # `make test'. After `make install' it should work as `perl JavaScript-Minifier.t' ######################### use Test::More tests => 17; BEGIN { use_ok('JavaScript::Minifier', qw(minify)) }; ######################### sub filesMatch { my $file1 = shift; my $file2 = shift; my $a; my $b; while (1) { $a = getc($file1); $b = getc($file2); if (!defined($a) && !defined($b)) { # both files end at same place return 1; } elsif (!defined($b) || # file2 ends first !defined($a) || # file1 ends first $a ne $b) { # a and b not the same return 0; } } } sub minTest { my $filename = shift; open(INFILE, 't/scripts/' . $filename . '.js') or die("couldn't open file"); open(GOTFILE, '>t/scripts/' . $filename . '-got.js') or die("couldn't open file"); minify(input => *INFILE, outfile => *GOTFILE); close(INFILE); close(GOTFILE); open(EXPECTEDFILE, 't/scripts/' . $filename . '-expected.js') or die("couldn't open file"); open(GOTFILE, 't/scripts/' . $filename . '-got.js') or die("couldn't open file"); ok(filesMatch(GOTFILE, EXPECTEDFILE)); close(EXPECTEDFILE); close(GOTFILE); } BEGIN { minTest('s2', 'testing s2'); # missing semi-colons minTest('s3', 'testing s3'); # //@ minTest('s4', 'testing s4'); # /*@*/ minTest('s5', 'testing s5'); # // minTest('s6', 'testing s6'); # /**/ minTest('s7', 'testing s7'); # blocks of comments minTest('s8', 'testing s8'); # + + - - minTest('s9', 'testing s9'); # alphanum minTest('s10', 'testing s10'); # }]) minTest('s11', 'testing s11'); # string and regexp literals minTest('s12', 'testing s12'); # other characters minTest('s13', 'testing s13'); # comment at start minTest('s14', 'testing s14'); # slash following square bracket is division not RegExp is(minify(input => 'var x = 2;'), 'var x=2;', 'string literal input and ouput'); is(minify(input => "var x = 2;\n;;;alert('hi');\nvar x = 2;", stripDebug => 1), 'var x=2;var x=2;', 'scriptDebug option'); is(minify(input => 'var x = 2;', copyright => "BSD"), '/* BSD */var x=2;', 'copyright option'); }JavaScript-Minifier-1.05/t/scripts/0000755000000000000000000000000010767776751015724 5ustar rootrootJavaScript-Minifier-1.05/t/scripts/s12.js0000644000000000000000000000010410767775621016655 0ustar rootroot ! ^ & * ( { [ = | : < > ? ~ JavaScript-Minifier-1.05/t/scripts/s8-expected.js0000644000000000000000000000001110767775621020376 0ustar rootroot- --+ ++-JavaScript-Minifier-1.05/t/scripts/s7.js0000644000000000000000000000044510767775621016611 0ustar rootrootvar x = 1; /*asdf*/ /*asdf*/ /*asdf*/ /*asdf*/ // aaaaa //@ a /**/ // //@ a //@ a /*@*//**//*@*/ /*@*/ /* asdfasdf asdf asdf * asdfasdfa * asdfasdfa *//**/ /* asdfasdf asdf asdf * asdfasdfa * asdfasdfa */ var x = 1; JavaScript-Minifier-1.05/t/scripts/s5-expected.js0000644000000000000000000000007710767775621020407 0ustar rootrootvar x=foo /2 / 2 /a/a;/regexp/ /regexp/;a+ ++a;a- --a;a a;a3 .aJavaScript-Minifier-1.05/t/scripts/s6-expected.js0000644000000000000000000000010110767775621020374 0ustar rootrootvar x=1 /2 / 2 /a/a;2/2;/regexp/ /regexp/;a+ ++a;a- --a;a a;a3 .aJavaScript-Minifier-1.05/t/scripts/s7-expected.js0000644000000000000000000000006310767775621020404 0ustar rootrootvar x=1;//@ a //@ a //@ a /*@*//*@*/ /*@*/ var x=1;JavaScript-Minifier-1.05/t/scripts/s4.js0000644000000000000000000000022710767775621016604 0ustar rootrootvar x = 1/*@a*/ / 2/*@a*/ / /*@a*/ 2 /a/a;/*@a*/ 2 /*@a*/ / 2; /regexp/ /*@a*/ /regexp/;/*@a*/ a +/*@a*/++a;a -/*@a*/--a;a/*@a*/a;a3/*@a*/.aJavaScript-Minifier-1.05/t/scripts/s3-expected.js0000644000000000000000000000016710767775621020405 0ustar rootrootvar x=1//@a /2//@a / //@a 2 /a/a;//@a /regexp/ //@a /regexp/;//@a a+//@a ++a;//@a a-//@a --a;a//@a a;a3//@a .aJavaScript-Minifier-1.05/t/scripts/s9.js0000644000000000000000000000003710767775621016610 0ustar rootroot asdf asdf 12 .toString(); JavaScript-Minifier-1.05/t/scripts/s3.js0000644000000000000000000000020110767775621016573 0ustar rootrootvar x = 1//@a / 2//@a / //@a 2 /a/a;//@a /regexp/ //@a /regexp/;//@a a +//@a ++a;//@a a -//@a --a;a//@a a;a3//@a .aJavaScript-Minifier-1.05/t/scripts/s14.js0000644000000000000000000000001310767775621016656 0ustar rootrootfoo[5] / 14JavaScript-Minifier-1.05/t/scripts/s4-expected.js0000644000000000000000000000020310767775621020375 0ustar rootrootvar x=1/*@a*/ /2/*@a*/ / /*@a*/ 2 /a/a;/*@a*/ 2/*@a*//2;/regexp/ /*@a*/ /regexp/;/*@a*/ a+/*@a*/++a;a-/*@a*/--a;a/*@a*/a;a3/*@a*/.aJavaScript-Minifier-1.05/t/scripts/s14-expected.js0000644000000000000000000000001110767775621020453 0ustar rootrootfoo[5]/14JavaScript-Minifier-1.05/t/scripts/s2-expected.js0000644000000000000000000000004010767775621020372 0ustar rootrootfunction(){var x=21 var y=33 []}JavaScript-Minifier-1.05/t/scripts/s11-expected.js0000644000000000000000000000006010767775621020454 0ustar rootroot" a \" a \n \\\\" ' a \' a \n \\\\' /a \. a\\\\/JavaScript-Minifier-1.05/t/scripts/s11.js0000644000000000000000000000007610767775621016664 0ustar rootroot " a \" a \n \\\\" ' a \' a \n \\\\' /a \. a\\\\/ JavaScript-Minifier-1.05/t/scripts/s13-expected.js0000644000000000000000000000001010767775621020451 0ustar rootrootvar x=2;JavaScript-Minifier-1.05/t/scripts/s9-expected.js0000644000000000000000000000003110767775621020401 0ustar rootrootasdf asdf 12 .toString();JavaScript-Minifier-1.05/t/scripts/s5.js0000644000000000000000000000017110767775621016603 0ustar rootrootvar x = foo//a / 2//a / //a 2 /a/a;//a /regexp/ //a /regexp/;//a a +//a ++a;//a a -//a --a;a//a a;a3//a .aJavaScript-Minifier-1.05/t/scripts/s8.js0000644000000000000000000000001310767775621016601 0ustar rootroot- -- + ++ -JavaScript-Minifier-1.05/t/scripts/s6.js0000644000000000000000000000022610767775621016605 0ustar rootrootvar x = 1/*a*/ / 2/*a*/ / /*a*/ 2/*a*/ /a/a;/*a*/ 2 /*a*/ / 2; /regexp/ /*a*/ /regexp/;/*a*/ a +/*a*/++a;a -/*a*/--a;a/*a*/a;a3/*a*/.aJavaScript-Minifier-1.05/t/scripts/s10.js0000644000000000000000000000006510767775621016661 0ustar rootroot} } ] } /*asdf*/ ) } /*@cc_on asdf */ ) ) ] } ] ] ] )JavaScript-Minifier-1.05/t/scripts/s2.js0000644000000000000000000000010510767775621016575 0ustar rootroot// missing semi-colons function () { var x = 21 var y = 33 [] }JavaScript-Minifier-1.05/t/scripts/s10-expected.js0000644000000000000000000000003610767775621020456 0ustar rootroot}}]})}/*@cc_on asdf */))]}]]])JavaScript-Minifier-1.05/t/scripts/s12-expected.js0000644000000000000000000000001610767775621020456 0ustar rootroot!^&*({[=|:<>?~JavaScript-Minifier-1.05/t/scripts/s13.js0000644000000000000000000000002610767775621016661 0ustar rootroot/* foo */ var x = 2;JavaScript-Minifier-1.05/lib/0000755000000000000000000000000010767776751014540 5ustar rootrootJavaScript-Minifier-1.05/lib/JavaScript/0000755000000000000000000000000010767776751016606 5ustar rootrootJavaScript-Minifier-1.05/lib/JavaScript/Minifier.pm0000644000000000000000000003277510767776537020726 0ustar rootrootpackage JavaScript::Minifier; use strict; use warnings; require Exporter; our @ISA = qw(Exporter); our @EXPORT_OK = qw(minify); our $VERSION = '1.05'; # ----------------------------------------------------------------------------- #return true if the character is allowed in identifier. sub isAlphanum { my $x = shift; return ($x =~ /[\w\$\\]/ || ord($x) > 126); } sub isSpace { my $x = shift; return ($x eq ' ' || $x eq "\t"); } sub isEndspace { my $x = shift; return ($x eq "\n" || $x eq "\r" || $x eq "\f"); } sub isWhitespace { my $x = shift; return (isSpace($x) || isEndspace($x)); } # New line characters before or after these characters can be removed. # Not + - / in this list because they require special care. sub isInfix { my $x = shift; $x =~ /[,;:=&%*<>\?\|\n]/; } # New line characters after these characters can be removed. sub isPrefix { my $x = shift; return ($x =~ /[\{\(\[!]/ || isInfix($x)); } # New line characters before these characters can removed. sub isPostfix { my $x = shift; return ($x =~ /[\}\)\]]/ || isInfix($x)); } # ----------------------------------------------------------------------------- sub _get { my $s = shift; if ($s->{inputType} eq 'file') { return getc($s->{input}); } elsif ($s->{inputType} eq 'string') { if ($s->{'inputPos'} < length($s->{input})) { return substr($s->{input}, $s->{inputPos}++, 1); } else { # Simulate getc() when off the end of the input string. return undef; } } else { die "no input"; } } sub _put { my $s = shift; my $x = shift; my $outfile = ($s->{outfile}); if (defined($s->{outfile})) { print $outfile $x; } else { $s->{output} .= $x; } } # ----------------------------------------------------------------------------- # print a # move b to a # move c to b # move d to c # new d # # i.e. print a and advance sub action1 { my $s = shift; if (!isWhitespace($s->{a})) { $s->{lastnws} = $s->{a}; } $s->{last} = $s->{a}; action2($s); } # sneeky output $s->{a} for comments sub action2 { my $s = shift; _put($s, $s->{a}); action3($s); } # move b to a # move c to b # move d to c # new d # # i.e. delete a sub action3 { my $s = shift; $s->{a} = $s->{b}; action4($s); } # move c to b # move d to c # new d # # i.e. delete b sub action4 { my $s = shift; $s->{b} = $s->{c}; $s->{c} = $s->{d}; $s->{d} = _get($s); } # ----------------------------------------------------------------------------- # put string and regexp literals # when this sub is called, $s->{a} is on the opening delimiter character sub putLiteral { my $s = shift; my $delimiter = $s->{a}; # ', " or / action1($s); do { while (defined($s->{a}) && $s->{a} eq '\\') { # escape character only escapes only the next one character action1($s); action1($s); } action1($s); } until ($s->{last} eq $delimiter || !defined($s->{a})); if ($s->{last} ne $delimiter) { # ran off end of file before printing the closing delimiter die 'unterminated ' . ($delimiter eq '\'' ? 'single quoted string' : $delimiter eq '"' ? 'double quoted string' : 'regular expression') . ' literal, stopped'; } } # ----------------------------------------------------------------------------- # If $s->{a} is a whitespace then collapse all following whitespace. # If any of the whitespace is a new line then ensure $s->{a} is a new line # when this function ends. sub collapseWhitespace { my $s = shift; while (defined($s->{a}) && isWhitespace($s->{a}) && defined($s->{b}) && isWhitespace($s->{b})) { if (isEndspace($s->{a}) || isEndspace($s->{b})) { $s->{a} = "\n"; } action4($s); # delete b } } # Advance $s->{a} to non-whitespace or end of file. # Doesn't print any of this whitespace. sub skipWhitespace { my $s = shift; while (defined($s->{a}) && isWhitespace($s->{a})) { action3($s); } } # Advance $s->{a} to non-whitespace or end of file # If any of the whitespace is a new line then print one new line. sub preserveEndspace { my $s = shift; collapseWhitespace($s); if (defined($s->{a}) && isEndspace($s->{a}) && defined($s->{b}) && !isPostfix($s->{b}) ) { action1($s); } skipWhitespace($s); } sub onWhitespaceConditionalComment { my $s = shift; return (defined($s->{a}) && isWhitespace($s->{a}) && defined($s->{b}) && $s->{b} eq '/' && defined($s->{c}) && ($s->{c} eq '/' || $s->{c} eq '*') && defined($s->{d}) && $s->{d} eq '@'); } # ----------------------------------------------------------------------------- sub minify { my %h = @_; # Immediately turn hash into a hash reference so that notation is the same in this function # as others. Easier refactoring. my $s = \%h; # hash reference for "state". This module is functional programming and the state is passed between functions. # determine if the the input is a string or a file handle. my $ref = \$s->{input}; if (defined($ref) && ref($ref) eq 'SCALAR'){ $s->{inputPos} = 0; $s->{inputType} = 'string'; } else { $s->{inputType} = 'file'; } # Determine if the output is to a string or a file. if (!defined($s->{outfile})) { $s->{output} = ''; } # Print the copyright notice first if ($s->{copyright}) { _put($s, '/* ' . $s->{copyright} . ' */'); } # Initialize the buffer. do { $s->{a} = _get($s); } while (defined($s->{a}) && isWhitespace($s->{a})); $s->{b} = _get($s); $s->{c} = _get($s); $s->{d} = _get($s); $s->{last} = undef; # assign for safety $s->{lastnws} = undef; # assign for safety # local variables my $ccFlag; # marks if a comment is an Internet Explorer conditional comment and should be printed to output while (defined($s->{a})) { # on this line $s->{a} should always be a non-whitespace character or undef (i.e. end of file) if (isWhitespace($s->{a})) { # check that this program is running correctly die 'minifier bug: minify while loop starting with whitespace, stopped'; } # Each branch handles trailing whitespace and ensures $s->{a} is on non-whitespace or undef when branch finishes if ($s->{a} eq '/') { # a division, comment, or regexp literal if (defined($s->{b}) && $s->{b} eq '/') { # slash-slash comment $ccFlag = defined($s->{c}) && $s->{c} eq '@'; # tests in IE7 show no space allowed between slashes and at symbol do { $ccFlag ? action2($s) : action3($s); } until (!defined($s->{a}) || isEndspace($s->{a})); if (defined($s->{a})) { # $s->{a} is a new line if ($ccFlag) { action1($s); # cannot use preserveEndspace($s) here because it might not print the new line skipWhitespace($s); } elsif (defined($s->{last}) && !isEndspace($s->{last}) && !isPrefix($s->{last})) { preserveEndspace($s); } else { skipWhitespace($s); } } } elsif (defined($s->{b}) && $s->{b} eq '*') { # slash-star comment $ccFlag = defined($s->{c}) && $s->{c} eq '@'; # test in IE7 shows no space allowed between star and at symbol do { $ccFlag ? action2($s) : action3($s); } until (!defined($s->{b}) || ($s->{a} eq '*' && $s->{b} eq '/')); if (defined($s->{b})) { # $s->{a} is asterisk and $s->{b} is foreslash if ($ccFlag) { action2($s); # the * action2($s); # the / # inside the conditional comment there may be a missing terminal semi-colon preserveEndspace($s); } else { # the comment is being removed action3($s); # the * $s->{a} = ' '; # the / collapseWhitespace($s); if (defined($s->{last}) && defined($s->{b}) && ((isAlphanum($s->{last}) && (isAlphanum($s->{b})||$s->{b} eq '.')) || ($s->{last} eq '+' && $s->{b} eq '+') || ($s->{last} eq '-' && $s->{b} eq '-'))) { # for a situation like 5-/**/-2 or a/**/a # When entering this block $s->{a} is whitespace. # The comment represented whitespace that cannot be removed. Therefore replace the now gone comment with a whitespace. action1($s); } elsif (defined($s->{last}) && !isPrefix($s->{last})) { preserveEndspace($s); } else { skipWhitespace($s); } } } else { die 'unterminated comment, stopped'; } } elsif (defined($s->{lastnws}) && ($s->{lastnws} eq ')' || $s->{lastnws} eq ']' || $s->{lastnws} eq '.' || isAlphanum($s->{lastnws}))) { # division action1($s); collapseWhitespace($s); # don't want a division to become a slash-slash comment with following conditional comment onWhitespaceConditionalComment($s) ? action1($s) : preserveEndspace($s); } else { # regexp literal putLiteral($s); collapseWhitespace($s); # don't want closing delimiter to become a slash-slash comment with following conditional comment onWhitespaceConditionalComment($s) ? action1($s) : preserveEndspace($s); } } elsif ($s->{a} eq '\'' || $s->{a} eq '"' ) { # string literal putLiteral($s); preserveEndspace($s); } elsif ($s->{a} eq '+' || $s->{a} eq '-') { # careful with + + and - - action1($s); collapseWhitespace($s); if (defined($s->{a}) && isWhitespace($s->{a})) { (defined($s->{b}) && $s->{b} eq $s->{last}) ? action1($s) : preserveEndspace($s); } } elsif (isAlphanum($s->{a})) { # keyword, identifiers, numbers action1($s); collapseWhitespace($s); if (defined($s->{a}) && isWhitespace($s->{a})) { # if $s->{b} is '.' could be (12 .toString()) which is property invocation. If space removed becomes decimal point and error. (defined($s->{b}) && (isAlphanum($s->{b}) || $s->{b} eq '.')) ? action1($s) : preserveEndspace($s); } } elsif ($s->{a} eq ']' || $s->{a} eq '}' || $s->{a} eq ')') { # no need to be followed by space but maybe needs following new line action1($s); preserveEndspace($s); } elsif ($s->{stripDebug} && $s->{a} eq ';' && defined($s->{b}) && $s->{b} eq ';' && defined($s->{c}) && $s->{c} eq ';') { action3($s); # delete one of the semi-colons $s->{a} = '/'; # replace the other two semi-colons $s->{b} = '/'; # so the remainder of line is removed } else { # anything else just prints and trailing whitespace discarded action1($s); skipWhitespace($s); } } if (!defined($s->{outfile})) { return $s->{output}; } } # minify() # ----------------------------------------------------------------------------- 1; __END__ =head1 NAME JavaScript::Minifier - Perl extension for minifying JavaScript code =head1 SYNOPSIS To minify a JavaScript file and have the output written directly to another file use JavaScript::Minifier qw(minify); open(INFILE, 'myScript.js') or die; open(OUTFILE, '>myScript-min.js') or die; minify(input => *INFILE, outfile => *OUTFILE); close(INFILE); close(OUTFILE); To minify a JavaScript string literal. Note that by omitting the outfile parameter a the minified code is returned as a string. my minifiedJavaScript = minify(input => 'var x = 2;'); To include a copyright comment at the top of the minified code. minify(input => 'var x = 2;', copyright => 'BSD License'); To treat ';;;' as '//' so that debugging code can be removed. This is a common JavaScript convention for minification. minify(input => 'var x = 2;', stripDebug => 1); The "input" parameter is manditory. The "output", "copyright", and "stripDebug" parameters are optional and can be used in any combination. =head1 DESCRIPTION This module removes unnecessary whitespace from JavaScript code. The primary requirement developing this module is to not break working code: if working JavaScript is in input then working JavaScript is output. It is ok if the input has missing semi-colons, snips like '++ +' or '12 .toString()', for example. Internet Explorer conditional comments are copied to the output but the code inside these comments will not be minified. The ECMAScript specifications allow for many different whitespace characters: space, horizontal tab, vertical tab, new line, carriage return, form feed, and paragraph separator. This module understands all of these as whitespace except for vertical tab and paragraph separator. These two types of whitespace are not minimized. For static JavaScript files, it is recommended that you minify during the build stage of web deployment. If you minify on-the-fly then it might be a good idea to cache the minified file. Minifying static files on-the-fly repeatedly is wasteful. =head2 EXPORT None by default. Exportable on demand: minifiy() =head1 SEE ALSO This project is developed using an SVN repository. To check out the repository svn co http://dev.michaux.ca/svn/random/JavaScript-Minifier This module is inspired by Douglas Crockford's JSMin: http://www.crockford.com/javascript/jsmin.html You may also be interested in the CSS::Minifier module also available on CPAN. =head1 AUTHORS Peter Michaux, Epetermichaux@gmail.comE Eric Herrera, Eherrera@10east.comE =head1 COPYRIGHT AND LICENSE Copyright (C) 2007 by Peter Michaux This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.6 or, at your option, any later version of Perl 5 you may have available. JavaScript-Minifier-1.05/META.yml0000644000000000000000000000050510767776751015243 0ustar rootroot# http://module-build.sourceforge.net/META-spec.html #XXXXXXX This is a prototype!!! It will change in the future!!! XXXXX# name: JavaScript-Minifier version: 1.05 version_from: lib/JavaScript/Minifier.pm installdirs: site requires: distribution_type: module generated_by: ExtUtils::MakeMaker version 6.30_01 JavaScript-Minifier-1.05/Changes0000644000000000000000000000025710767775621015264 0ustar rootrootRevision history for Perl extension JavaScript::Minifier. 0.01 Sat May 19 15:28:19 2007 - original version; created by h2xs 1.23 with options -X -n JavaScript::Minifier JavaScript-Minifier-1.05/Makefile.PL0000644000000000000000000000110010767775621015727 0ustar rootrootuse 5.8.0; use ExtUtils::MakeMaker; # See lib/ExtUtils/MakeMaker.pm for details of how to influence # the contents of the Makefile that is written. WriteMakefile( NAME => 'JavaScript::Minifier', VERSION_FROM => 'lib/JavaScript/Minifier.pm', # finds $VERSION PREREQ_PM => {}, # e.g., Module::Name => 1.1 ($] >= 5.005 ? ## Add these new keywords supported since 5.005 (ABSTRACT_FROM => 'lib/JavaScript/Minifier.pm', # retrieve abstract from module AUTHOR => 'Peter Michaux ') : ()), ); JavaScript-Minifier-1.05/README0000644000000000000000000000121210767775621014641 0ustar rootrootJavaScript-Minifier version 1.0 ================================ Use this module to remove unnecessary whitespace from JavaScript code. See documentation in lib/JavaScript/Minifier.pm for more information. INSTALLATION To install this module type the following: perl Makefile.PL make make test make install COPYRIGHT AND LICENSE Put the correct copyright and license information here. Copyright (C) 2007 by Peter Michaux This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.6 or, at your option, any later version of Perl 5 you may have available. JavaScript-Minifier-1.05/MANIFEST0000644000000000000000000000130510767776751015122 0ustar rootrootChanges Makefile.PL MANIFEST README lib/JavaScript/Minifier.pm t/JavaScript-Minifier.t t/scripts/s2.js t/scripts/s2-expected.js t/scripts/s3.js t/scripts/s3-expected.js t/scripts/s4.js t/scripts/s4-expected.js t/scripts/s5.js t/scripts/s5-expected.js t/scripts/s6.js t/scripts/s6-expected.js t/scripts/s7.js t/scripts/s7-expected.js t/scripts/s8.js t/scripts/s8-expected.js t/scripts/s9.js t/scripts/s9-expected.js t/scripts/s10.js t/scripts/s10-expected.js t/scripts/s11.js t/scripts/s11-expected.js t/scripts/s12.js t/scripts/s12-expected.js t/scripts/s13.js t/scripts/s13-expected.js t/scripts/s14.js t/scripts/s14-expected.js META.yml Module meta-data (added by MakeMaker)