1 files changed, 126 insertions, 0 deletions
diff --git a/node_modules/clean-css/lib/reader/load-original-sources.js b/node_modules/clean-css/lib/reader/load-original-sources.js
new file mode 100644
index 00000000..465035d6
--- /dev/null
+++ b/node_modules/clean-css/lib/reader/load-original-sources.js
@@ -0,0 +1,126 @@
+var fs = require('fs');
+var path = require('path');
+
+var isAllowedResource = require('./is-allowed-resource');
+
+var hasProtocol = require('../utils/has-protocol');
+var isRemoteResource = require('../utils/is-remote-resource');
+
+function loadOriginalSources(context, callback) {
+  var loadContext = {
+    callback: callback,
+    fetch: context.options.fetch,
+    index: 0,
+    inline: context.options.inline,
+    inlineRequest: context.options.inlineRequest,
+    inlineTimeout: context.options.inlineTimeout,
+    localOnly: context.localOnly,
+    rebaseTo: context.options.rebaseTo,
+    sourcesContent: context.sourcesContent,
+    uriToSource: uriToSourceMapping(context.inputSourceMapTracker.all()),
+    warnings: context.warnings
+  };
+
+  return context.options.sourceMap && context.options.sourceMapInlineSources ?
+    doLoadOriginalSources(loadContext) :
+    callback();
+}
+
+function uriToSourceMapping(allSourceMapConsumers) {
+  var mapping = {};
+  var consumer;
+  var uri;
+  var source;
+  var i, l;
+
+  for (source in allSourceMapConsumers) {
+    consumer = allSourceMapConsumers[source];
+
+    for (i = 0, l = consumer.sources.length; i < l; i++) {
+      uri = consumer.sources[i];
+      source = consumer.sourceContentFor(uri, true);
+
+      mapping[uri] = source;
+    }
+  }
+
+  return mapping;
+}
+
+function doLoadOriginalSources(loadContext) {
+  var uris = Object.keys(loadContext.uriToSource);
+  var uri;
+  var source;
+  var total;
+
+  for (total = uris.length; loadContext.index < total; loadContext.index++) {
+    uri = uris[loadContext.index];
+    source = loadContext.uriToSource[uri];
+
+    if (source) {
+      loadContext.sourcesContent[uri] = source;
+    } else {
+      return loadOriginalSource(uri, loadContext);
+    }
+  }
+
+  return loadContext.callback();
+}
+
+function loadOriginalSource(uri, loadContext) {
+  var content;
+
+  if (isRemoteResource(uri)) {
+    return loadOriginalSourceFromRemoteUri(uri, loadContext, function (content) {
+      loadContext.index++;
+      loadContext.sourcesContent[uri] = content;
+      return doLoadOriginalSources(loadContext);
+    });
+  } else {
+    content = loadOriginalSourceFromLocalUri(uri, loadContext);
+    loadContext.index++;
+    loadContext.sourcesContent[uri] = content;
+    return doLoadOriginalSources(loadContext);
+  }
+}
+
+function loadOriginalSourceFromRemoteUri(uri, loadContext, whenLoaded) {
+  var isAllowed = isAllowedResource(uri, true, loadContext.inline);
+  var isRuntimeResource = !hasProtocol(uri);
+
+  if (loadContext.localOnly) {
+    loadContext.warnings.push('Cannot fetch remote resource from "' + uri + '" as no callback given.');
+    return whenLoaded(null);
+  } else if (isRuntimeResource) {
+    loadContext.warnings.push('Cannot fetch "' + uri + '" as no protocol given.');
+    return whenLoaded(null);
+  } else if (!isAllowed) {
+    loadContext.warnings.push('Cannot fetch "' + uri + '" as resource is not allowed.');
+    return whenLoaded(null);
+  }
+
+  loadContext.fetch(uri, loadContext.inlineRequest, loadContext.inlineTimeout, function (error, content) {
+    if (error) {
+      loadContext.warnings.push('Missing original source at "' + uri + '" - ' + error);
+    }
+
+    whenLoaded(content);
+  });
+}
+
+function loadOriginalSourceFromLocalUri(relativeUri, loadContext) {
+  var isAllowed = isAllowedResource(relativeUri, false, loadContext.inline);
+  var absoluteUri = path.resolve(loadContext.rebaseTo, relativeUri);
+
+  if (!fs.existsSync(absoluteUri) || !fs.statSync(absoluteUri).isFile()) {
+    loadContext.warnings.push('Ignoring local source map at "' + absoluteUri + '" as resource is missing.');
+    return null;
+  } else if (!isAllowed) {
+    loadContext.warnings.push('Cannot fetch "' + absoluteUri + '" as resource is not allowed.');
+    return null;
+  }
+
+  return fs.readFileSync(absoluteUri, 'utf8');
+}
+
+module.exports = loadOriginalSources;