1 files changed, 213 insertions, 0 deletions
diff --git a/node_modules/clean-css/lib/options/optimization-level.js b/node_modules/clean-css/lib/options/optimization-level.js
new file mode 100644
index 000000000..d9828287b
--- /dev/null
+++ b/node_modules/clean-css/lib/options/optimization-level.js
@@ -0,0 +1,213 @@
+var roundingPrecisionFrom = require('./rounding-precision').roundingPrecisionFrom;
+
+var override = require('../utils/override');
+
+var OptimizationLevel = {
+  Zero: '0',
+  One: '1',
+  Two: '2'
+};
+
+var DEFAULTS = {};
+
+DEFAULTS[OptimizationLevel.Zero] = {};
+DEFAULTS[OptimizationLevel.One] = {
+  cleanupCharsets: true,
+  normalizeUrls: true,
+  optimizeBackground: true,
+  optimizeBorderRadius: true,
+  optimizeFilter: true,
+  optimizeFont: true,
+  optimizeFontWeight: true,
+  optimizeOutline: true,
+  removeNegativePaddings: true,
+  removeQuotes: true,
+  removeWhitespace: true,
+  replaceMultipleZeros: true,
+  replaceTimeUnits: true,
+  replaceZeroUnits: true,
+  roundingPrecision: roundingPrecisionFrom(undefined),
+  selectorsSortingMethod: 'standard',
+  specialComments: 'all',
+  tidyAtRules: true,
+  tidyBlockScopes: true,
+  tidySelectors: true,
+  transform: noop
+};
+DEFAULTS[OptimizationLevel.Two] = {
+  mergeAdjacentRules: true,
+  mergeIntoShorthands: true,
+  mergeMedia: true,
+  mergeNonAdjacentRules: true,
+  mergeSemantically: false,
+  overrideProperties: true,
+  reduceNonAdjacentRules: true,
+  removeDuplicateFontRules: true,
+  removeDuplicateMediaBlocks: true,
+  removeDuplicateRules: true,
+  restructureRules: false
+};
+
+var ALL_KEYWORD_1 = '*';
+var ALL_KEYWORD_2 = 'all';
+var FALSE_KEYWORD_1 = 'false';
+var FALSE_KEYWORD_2 = 'off';
+var TRUE_KEYWORD_1 = 'true';
+var TRUE_KEYWORD_2 = 'on';
+
+var OPTION_SEPARATOR = ';';
+var OPTION_VALUE_SEPARATOR = ':';
+
+function noop() {}
+
+function optimizationLevelFrom(source) {
+  var level = override(DEFAULTS, {});
+  var Zero = OptimizationLevel.Zero;
+  var One = OptimizationLevel.One;
+  var Two = OptimizationLevel.Two;
+
+
+  if (undefined === source) {
+    delete level[Two];
+    return level;
+  }
+
+  if (typeof source == 'string') {
+    source = parseInt(source);
+  }
+
+  if (typeof source == 'number' && source === parseInt(Two)) {
+    return level;
+  }
+
+  if (typeof source == 'number' && source === parseInt(One)) {
+    delete level[Two];
+    return level;
+  }
+
+  if (typeof source == 'number' && source === parseInt(Zero)) {
+    delete level[Two];
+    delete level[One];
+    return level;
+  }
+
+  if (typeof source == 'object') {
+    source = covertValuesToHashes(source);
+  }
+
+  if (One in source && 'roundingPrecision' in source[One]) {
+    source[One].roundingPrecision = roundingPrecisionFrom(source[One].roundingPrecision);
+  }
+
+  if (Zero in source || One in source || Two in source) {
+    level[Zero] = override(level[Zero], source[Zero]);
+  }
+
+  if (One in source && ALL_KEYWORD_1 in source[One]) {
+    level[One] = override(level[One], defaults(One, normalizeValue(source[One][ALL_KEYWORD_1])));
+    delete source[One][ALL_KEYWORD_1];
+  }
+
+  if (One in source && ALL_KEYWORD_2 in source[One]) {
+    level[One] = override(level[One], defaults(One, normalizeValue(source[One][ALL_KEYWORD_2])));
+    delete source[One][ALL_KEYWORD_2];
+  }
+
+  if (One in source || Two in source) {
+    level[One] = override(level[One], source[One]);
+  } else {
+    delete level[One];
+  }
+
+  if (Two in source && ALL_KEYWORD_1 in source[Two]) {
+    level[Two] = override(level[Two], defaults(Two, normalizeValue(source[Two][ALL_KEYWORD_1])));
+    delete source[Two][ALL_KEYWORD_1];
+  }
+
+  if (Two in source && ALL_KEYWORD_2 in source[Two]) {
+    level[Two] = override(level[Two], defaults(Two, normalizeValue(source[Two][ALL_KEYWORD_2])));
+    delete source[Two][ALL_KEYWORD_2];
+  }
+
+  if (Two in source) {
+    level[Two] = override(level[Two], source[Two]);
+  } else {
+    delete level[Two];
+  }
+
+  return level;
+}
+
+function defaults(level, value) {
+  var options = override(DEFAULTS[level], {});
+  var key;
+
+  for (key in options) {
+    if (typeof options[key] == 'boolean') {
+      options[key] = value;
+    }
+  }
+
+  return options;
+}
+
+function normalizeValue(value) {
+  switch (value) {
+    case FALSE_KEYWORD_1:
+    case FALSE_KEYWORD_2:
+      return false;
+    case TRUE_KEYWORD_1:
+    case TRUE_KEYWORD_2:
+      return true;
+    default:
+      return value;
+  }
+}
+
+function covertValuesToHashes(source) {
+  var clonedSource = override(source, {});
+  var level;
+  var i;
+
+  for (i = 0; i <= 2; i++) {
+    level = '' + i;
+
+    if (level in clonedSource && (clonedSource[level] === undefined || clonedSource[level] === false)) {
+      delete clonedSource[level];
+    }
+
+    if (level in clonedSource && clonedSource[level] === true) {
+      clonedSource[level] = {};
+    }
+
+    if (level in clonedSource && typeof clonedSource[level] == 'string') {
+      clonedSource[level] = covertToHash(clonedSource[level], level);
+    }
+  }
+
+  return clonedSource;
+}
+
+function covertToHash(asString, level) {
+  return asString
+    .split(OPTION_SEPARATOR)
+    .reduce(function (accumulator, directive) {
+      var parts = directive.split(OPTION_VALUE_SEPARATOR);
+      var name = parts[0];
+      var value = parts[1];
+      var normalizedValue = normalizeValue(value);
+
+      if (ALL_KEYWORD_1 == name || ALL_KEYWORD_2 == name) {
+        accumulator = override(accumulator, defaults(level, normalizedValue));
+      } else {
+        accumulator[name] = normalizedValue;
+      }
+
+      return accumulator;
+    }, {});
+}
+
+module.exports = {
+  OptimizationLevel: OptimizationLevel,
+  optimizationLevelFrom: optimizationLevelFrom,
+};