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basePath & regExp now can be configured #9

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110 changes: 63 additions & 47 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,64 +6,80 @@ var gutil = require('gulp-util');
var PluginError = gutil.PluginError;
var map = require('event-stream').map;

var FILE_DECL = /(?:href=|src=|url\()['|"]([^\s>"']+?)\?rev=([^\s>"']+?)['|"]/gi;
var revPlugin = function revPlugin(params) {

var revPlugin = function revPlugin() {
var defaultParams = {
basePath: null,
regExp: /(?:href=|src=|url\()['|"]([^\s>"']+?)\?rev=(@@hash)['|"]/gi
};
params = extend({}, defaultParams, params);

return map(function(file, cb) {

var contents;
var lines;
var i, length;
var line;
var groups;
var dependencyPath;
var data, hash;

if(!file) {
throw new PluginError('gulp-rev-append', 'Missing file option for gulp-rev-append.');
}

if(!file.contents) {
throw new PluginError('gulp-rev-append', 'Missing file.contents required for modifying files using gulp-rev-append.');
function extend(target) {
var sources = [].slice.call(arguments, 1);
sources.forEach(function (source) {
for (var prop in source) {
target[prop] = source[prop];
}
});
return target;
}

contents = file.contents.toString();
lines = contents.split('\n');
length = lines.length;
return map(function (file, cb) {
var contents;
var lines;
var i, length;
var line;
var groups;
var dependencyPath;
var data, hash;

for(i = 0; i < length; i++) {
line = lines[i];
groups = FILE_DECL.exec(line);
if(groups && groups.length > 1) {
// are we an "absoulte path"? (e.g. /js/app.js)
var normPath = path.normalize(groups[1]);
if (normPath.indexOf(path.sep) === 0) {
dependencyPath = path.join(file.base, normPath);
}
else {
dependencyPath = path.resolve(path.dirname(file.path), normPath);
if (!file) {
throw new PluginError('gulp-rev-append', 'Missing file option for gulp-rev-append.');
}

try {
data = fs.readFileSync(dependencyPath);
hash = crypto.createHash('md5');
hash.update(data.toString(), 'utf8');
line = line.replace(groups[2], hash.digest('hex'));
if (!file.contents) {
throw new PluginError('gulp-rev-append', 'Missing file.contents required for modifying files using gulp-rev-append.');
}
catch(e) {
// fail silently.

contents = file.contents.toString();
lines = contents.split('\n');
length = lines.length;

for (i = 0; i < length; i++) {
line = lines[i];
groups = params.regExp.exec(line);
if (groups && groups.length > 1) {
// are we an "absoulte path"? (e.g. /js/app.js)
var normPath = path.normalize(groups[1]);
if (normPath.indexOf(path.sep) === 0) { //we have absolute path
if (params.basePath !== null) {
dependencyPath = path.join(params.basePath, normPath);
} else {
dependencyPath = path.join(file.base, normPath);
}
}
else {
dependencyPath = path.resolve(path.dirname(file.path), normPath);
}

try {
data = fs.readFileSync(dependencyPath);
hash = crypto.createHash('md5');
hash.update(data.toString(), 'utf8');
line = line.replace(groups[2], hash.digest('hex'));
} catch (e) {
// fail silently.
}
}
lines[i] = line;
params.regExp.lastIndex = 0;
}
}
lines[i] = line;
FILE_DECL.lastIndex = 0;
}

file.contents = new Buffer(lines.join('\n'));
cb(null, file);
file.contents = new Buffer(lines.join('\n'));
cb(null, file);

});
});

};

module.exports = revPlugin;
module.exports = revPlugin;