diff options
Diffstat (limited to 'schall/static/RGraph/scripts/minify')
| -rwxr-xr-x | schall/static/RGraph/scripts/minify | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/schall/static/RGraph/scripts/minify b/schall/static/RGraph/scripts/minify new file mode 100755 index 0000000..3524429 --- /dev/null +++ b/schall/static/RGraph/scripts/minify @@ -0,0 +1,104 @@ +#!/usr/bin/php -q +<?php + /** + * This is a minification script. It minifies the desired script "in-place" + * + * Usage (Unix): ./minify file1 file2 ... + * Usage (Windows): C:\php\php.exe minify file1 file2 ... + * + * The minification is medium, and it can over halve a scripts size. + * Combined with subsequent gzip compression the results can be excellent. For + * example a 70k script of mine was reduced to just 7k. (!) Substantial + * bandwidth savings for you, and much improved performance for your users. + * + * NOTE: Usage on Windows works, but is less tested + */ + + /** + * Check for arg + */ + if (empty($_SERVER['argv'][1])) { + echo "RGraph minification script\n"; + echo "==========================\n"; + echo "Usage (Unix): " . $_SERVER['argv'][0] . " file1 file2 ...\n"; + echo "Usage (Windows): C:\php\php.exe " . $_SERVER['argv'][0] . " file1 file2 ...\n\n"; + exit; + + } else { + + for ($i=1; $i<count($_SERVER['argv']); ++$i) { + Minify($_SERVER['argv'][$i]); + } + } + + + /** + * This is the function that does the work of minifying the file + * + * @param $filename string The filename to be minified + */ + function Minify($filename) + { + /** + * Begin + */ + $original = file_get_contents($filename); + $new = preg_replace('/^ +/m', '', $original); // Lose spaces at the start of lines + $new = preg_replace('/ *\/\/.*$/m', '', $new); // Lose comments of the style: "// ..." + $new = preg_replace("/;\r?\n/m", ";\r\n", $new); // Make all lines end with \r\n + //$new = preg_replace("|\r\n\*|", "", $new); + + /** + * Get rid of block comments + */ + $out = ''; + $inBlock = false; // Are we in a block comment + for ($i=0; $i<strlen($new); $i++) { + if (substr($new, $i, 1) == '/') { + // Read the next char + if (!$inBlock AND substr($new, $i, 2) == '/*') { + $inBlock = true; + } + } elseif (substr($new, $i, 2) == '*/') { + $inBlock = false; + $i++; + continue; + } + + if (!$inBlock) { + $out .= substr($new, $i, 1); + } + } + + /** + * Get rid of double line breaks + * + * NOTE: Is this necessary? + */ + $out = preg_replace('|\n+|', "\n", $out); + + /** + * Further tweaks + * UPDATED: 28th March 2009 - Line endings have been changed - they should all be \r\n + */ + $out = str_replace(";\r\n}", ';}', $out); + $out = str_replace(";\r\nRGraph", ';RGraph', $out); + $out = preg_replace('/;\r\n([a-z])/i', ';$1', $out); + $out = str_replace('if (', 'if(', $out); + $out = str_replace(') {', '){', $out); + $out = str_replace("}\r\n", '}', $out); + $out = str_replace("{\r\n", '{', $out); // UPDATED + $out = str_replace("{\r\n", '{', $out); // UPDATED + $out = str_replace("}\r\n}", '}}', $out); // UPDATED + $out = str_replace("}\r\n}", '}}', $out); // UPDATED + $out = str_replace("}\r\n}", '}}', $out); // UPDATED + $out = preg_replace('/ {2,}= /', ' = ', $out); + + // Mark the file as minified + $out = "// THIS FILE HAS BEEN MINIFIED\r\n" . $out; + + file_put_contents($filename, $out); + + printf(" Minifying {$filename} Before: %s After: %s Saving: %d%%\n", number_format(strlen($original)), number_format(strlen($out)), number_format((((strlen($original) - strlen($out)) / strlen($original)) * 100), 1)); + } +?>
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