added plugin from postcss: postcss-fixes rucksack-css

1 files changed, 66 insertions, 0 deletions

diff --git a/node_modules/postcss-hexrgba/index.js b/node_modules/postcss-hexrgba/index.js
new file mode 100644
index 00000000..19967d62
--- /dev/null
+++ b/node_modules/postcss-hexrgba/index.js
@@ -0,0 +1,66 @@
+'use strict';
+
+const postcss = require('postcss');
+
+module.exports = postcss.plugin('postcss-hexrgba', () => {
+
+  /**
+   * Hex to RGB converter
+   * @param  {string} hex hexidecimal string without #
+   * @return {array} RGB values
+   */
+  function hexRgb(hex){
+    let shorthandCheck = /^([a-f\d])([a-f\d])([a-f\d])$/i,
+        rgbRegex = /^([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i,
+        rgb;
+
+    hex = hex.replace(shorthandCheck, function(m, r, g, b) {
+      return r + r + g + g + b + b;
+    });
+
+    rgb = hex.replace(/^\s+|\s+$/g, '').match(rgbRegex);
+
+    // Convert it
+    return rgb ? [
+      parseInt(rgb[1], 16),
+      parseInt(rgb[2], 16),
+      parseInt(rgb[3], 16)
+    ] : false;
+  }
+
+  /**
+   * CSS rule handler
+   * @param  {string} decl CSS delcaration
+   */
+  function ruleHandler(decl, result) {
+    let input = decl.value;
+
+    // Get the raw hex values and replace them
+    let output = input.replace(/rgba\(#(.*?),/g, (match, hex) => {
+      let rgb = hexRgb(hex),
+          matchHex = new RegExp('#' + hex);
+        
+      // If conversion fails, emit a warning
+      if (!rgb) {
+        result.warn('not a valid hex', { node: decl });
+        return match;
+      }
+
+      rgb = rgb.toString();
+      
+      return match.replace(matchHex, rgb);
+    });
+
+    decl.value = output;
+  }
+
+  return function(css, result) {
+    css.walkDecls(decl => {
+      if (typeof decl.value === 'undefined' || decl.value.indexOf('rgba') === -1) {
+        return;
+      }
+
+      ruleHandler(decl, result);
+    });
+  };
+});