first commit

build/node_modules/gulp-sourcemaps/index.js

@@ -0,0 +1,269 @@
+'use strict';
+var through = require('through2');
+var fs = require('graceful-fs');
+var path = require('path');
+var File = require('vinyl');
+var convert = require('convert-source-map');
+var stripBom = require('strip-bom');
+
+var PLUGIN_NAME = 'gulp-sourcemap';
+var urlRegex = /^(https?|webpack(-[^:]+)?):\/\//;
+
+/**
+ * Initialize source mapping chain
+ */
+module.exports.init = function init(options) {
+  function sourceMapInit(file, encoding, callback) {
+    /*jshint validthis:true */
+
+    // pass through if file is null or already has a source map
+    if (file.isNull() || file.sourceMap) {
+      this.push(file);
+      return callback();
+    }
+
+    if (file.isStream()) {
+      return callback(new Error(PLUGIN_NAME + '-init: Streaming not supported'));
+    }
+
+    var fileContent = file.contents.toString();
+    var sourceMap;
+
+    if (options && options.loadMaps) {
+      var sourcePath = ''; //root path for the sources in the map
+
+      // Try to read inline source map
+      sourceMap = convert.fromSource(fileContent);
+      if (sourceMap) {
+        sourceMap = sourceMap.toObject();
+        // sources in map are relative to the source file
+        sourcePath = path.dirname(file.path);
+        fileContent = convert.removeComments(fileContent);
+      } else {
+        // look for source map comment referencing a source map file
+        var mapComment = convert.mapFileCommentRegex.exec(fileContent);
+
+        var mapFile;
+        if (mapComment) {
+          mapFile = path.resolve(path.dirname(file.path), mapComment[1] || mapComment[2]);
+          fileContent = convert.removeMapFileComments(fileContent);
+        // if no comment try map file with same name as source file
+        } else {
+          mapFile = file.path + '.map';
+        }
+
+        // sources in external map are relative to map file
+        sourcePath = path.dirname(mapFile);
+
+        try {
+          sourceMap = JSON.parse(stripBom(fs.readFileSync(mapFile, 'utf8')));
+        } catch(e) {}
+      }
+
+      // fix source paths and sourceContent for imported source map
+      if (sourceMap) {
+        sourceMap.sourcesContent = sourceMap.sourcesContent || [];
+        sourceMap.sources.forEach(function(source, i) {
+          if (source.match(urlRegex)) {
+            sourceMap.sourcesContent[i] = sourceMap.sourcesContent[i] || null;
+            return;
+          }
+          var absPath = path.resolve(sourcePath, source);
+          sourceMap.sources[i] = unixStylePath(path.relative(file.base, absPath));
+
+          if (!sourceMap.sourcesContent[i]) {
+            var sourceContent = null;
+            if (sourceMap.sourceRoot) {
+              if (sourceMap.sourceRoot.match(urlRegex)) {
+                sourceMap.sourcesContent[i] = null;
+                return;
+              }
+              absPath = path.resolve(sourcePath, sourceMap.sourceRoot, source);
+            }
+
+            // if current file: use content
+            if (absPath === file.path) {
+              sourceContent = fileContent;
+
+            // else load content from file
+            } else {
+              try {
+                if (options.debug)
+                  console.log(PLUGIN_NAME + '-init: No source content for "' + source + '". Loading from file.');
+                sourceContent = stripBom(fs.readFileSync(absPath, 'utf8'));
+              } catch (e) {
+                if (options.debug)
+                  console.warn(PLUGIN_NAME + '-init: source file not found: ' + absPath);
+              }
+            }
+            sourceMap.sourcesContent[i] = sourceContent;
+          }
+        });
+
+        // remove source map comment from source
+        file.contents = new Buffer(fileContent, 'utf8');
+      }
+    }
+
+    if (!sourceMap) {
+      // Make an empty source map
+      sourceMap = {
+        version : 3,
+        names: [],
+        mappings: '',
+        sources: [unixStylePath(file.relative)],
+        sourcesContent: [fileContent]
+      };
+    }
+
+    sourceMap.file = unixStylePath(file.relative);
+    file.sourceMap = sourceMap;
+
+    this.push(file);
+    callback();
+  }
+
+  return through.obj(sourceMapInit);
+};
+
+/**
+ * Write the source map
+ *
+ * @param options options to change the way the source map is written
+ *
+ */
+module.exports.write = function write(destPath, options) {
+  if (options === undefined && Object.prototype.toString.call(destPath) === '[object Object]') {
+    options = destPath;
+    destPath = undefined;
+  }
+  options = options || {};
+
+  // set defaults for options if unset
+  if (options.includeContent === undefined)
+    options.includeContent = true;
+  if (options.addComment === undefined)
+    options.addComment = true;
+
+  function sourceMapWrite(file, encoding, callback) {
+    /*jshint validthis:true */
+
+    if (file.isNull() || !file.sourceMap) {
+      this.push(file);
+      return callback();
+    }
+
+    if (file.isStream()) {
+      return callback(new Error(PLUGIN_NAME + '-write: Streaming not supported'));
+    }
+
+    var sourceMap = file.sourceMap;
+    // fix paths if Windows style paths
+    sourceMap.file = unixStylePath(file.relative);
+    sourceMap.sources = sourceMap.sources.map(function(filePath) {
+      return unixStylePath(filePath);
+    });
+
+    if (typeof options.sourceRoot === 'function') {
+      sourceMap.sourceRoot = options.sourceRoot(file);
+    } else {
+      sourceMap.sourceRoot = options.sourceRoot;
+    }
+
+    if (options.includeContent) {
+      sourceMap.sourcesContent = sourceMap.sourcesContent || [];
+
+      // load missing source content
+      for (var i = 0; i < file.sourceMap.sources.length; i++) {
+        if (!sourceMap.sourcesContent[i]) {
+          var sourcePath = path.resolve(sourceMap.sourceRoot || file.base, sourceMap.sources[i]);
+          try {
+            if (options.debug)
+              console.log(PLUGIN_NAME + '-write: No source content for "' + sourceMap.sources[i] + '". Loading from file.');
+            sourceMap.sourcesContent[i] = stripBom(fs.readFileSync(sourcePath, 'utf8'));
+          } catch (e) {
+            if (options.debug)
+              console.warn(PLUGIN_NAME + '-write: source file not found: ' + sourcePath);
+          }
+        }
+      }
+      if (sourceMap.sourceRoot === undefined) {
+        sourceMap.sourceRoot = '/source/';
+      } else if (sourceMap.sourceRoot === null) {
+        sourceMap.sourceRoot = undefined;
+      }
+    } else {
+      delete sourceMap.sourcesContent;
+    }
+
+    var extension = file.relative.split('.').pop();
+    var commentFormatter;
+
+    switch (extension) {
+      case 'css':
+        commentFormatter = function(url) { return "\n/*# sourceMappingURL=" + url + " */\n"; };
+        break;
+      case 'js':
+        commentFormatter = function(url) { return "\n//# sourceMappingURL=" + url + "\n"; };
+        break;
+      default:
+        commentFormatter = function(url) { return ""; };
+    }
+
+    var comment, sourceMappingURLPrefix;
+    if (!destPath) {
+      // encode source map into comment
+      var base64Map = new Buffer(JSON.stringify(sourceMap)).toString('base64');
+      comment = commentFormatter('data:application/json;base64,' + base64Map);
+    } else {
+      var sourceMapPath = path.join(file.base, destPath, file.relative) + '.map';
+      // add new source map file to stream
+      var sourceMapFile = new File({
+        cwd: file.cwd,
+        base: file.base,
+        path: sourceMapPath,
+        contents: new Buffer(JSON.stringify(sourceMap)),
+        stat: {
+          isFile: function () { return true; },
+          isDirectory: function () { return false; },
+          isBlockDevice: function () { return false; },
+          isCharacterDevice: function () { return false; },
+          isSymbolicLink: function () { return false; },
+          isFIFO: function () { return false; },
+          isSocket: function () { return false; }
+        }
+      });
+      this.push(sourceMapFile);
+
+      var sourceMapPathRelative = path.relative(path.dirname(file.path), sourceMapPath);
+
+      if (options.sourceMappingURLPrefix) {
+        var prefix = '';
+        if (typeof options.sourceMappingURLPrefix === 'function') {
+          prefix = options.sourceMappingURLPrefix(file);
+        } else {
+          prefix = options.sourceMappingURLPrefix;
+        }
+        sourceMapPathRelative = prefix+path.join('/', sourceMapPathRelative);
+      }
+      comment = commentFormatter(unixStylePath(sourceMapPathRelative));
+
+      if (options.sourceMappingURL && typeof options.sourceMappingURL === 'function') {
+        comment = commentFormatter(options.sourceMappingURL(file));
+      }
+    }
+
+    // append source map comment
+    if (options.addComment)
+      file.contents = Buffer.concat([file.contents, new Buffer(comment)]);
+
+    this.push(file);
+    callback();
+  }
+
+  return through.obj(sourceMapWrite);
+};
+
+function unixStylePath(filePath) {
+  return filePath.split(path.sep).join('/');
+}