From 385d6534d2de5c6337aa3e619d22e21218fd0ce2 Mon Sep 17 00:00:00 2001
From: Kiyohiko Heima <piyo326@gmail.com>
Date: Sun, 7 Dec 2014 19:31:43 +0900
Subject: [PATCH] add cleanupListOfValues

---
 .svgo.yml                      |   1 +
 plugins/cleanupListOfValues.js | 122 +++++++++++++++++++++++++++++++++
 2 files changed, 123 insertions(+)
 create mode 100644 plugins/cleanupListOfValues.js

diff --git a/.svgo.yml b/.svgo.yml
index c497291e..4a13b153 100644
--- a/.svgo.yml
+++ b/.svgo.yml
@@ -23,6 +23,7 @@ plugins:
   - convertStyleToAttrs
   - removeRasterImages
   - cleanupNumericValues
+  - cleanupListOfValues
   - convertColors
   - removeUnknownsAndDefaults
   - removeNonInheritableGroupAttrs
diff --git a/plugins/cleanupListOfValues.js b/plugins/cleanupListOfValues.js
new file mode 100644
index 00000000..f6478241
--- /dev/null
+++ b/plugins/cleanupListOfValues.js
@@ -0,0 +1,122 @@
+'use strict';
+
+exports.type = 'perItem';
+
+exports.active = false;
+
+exports.params = {
+    floatPrecision: 3,
+    leadingZero: true,
+    defaultPx: true
+};
+
+var regNumericValues = /^([\-+]?\d*\.?\d+([eE][\-+]?\d+)?)(px|pt|pc|mm|cm|m|in|ft|em|ex|%)?$/,
+    regSeparator = /\s+,?\s*|,\s*/,
+    removeLeadingZero = require('../lib/svgo/tools').removeLeadingZero;
+
+/**
+ * Round list of values to the fixed precision.
+ *
+ * @example
+ * <svg viewBox="0 0 200.28423 200.28423" enable-background="new 0 0 200.28423 200.28423">
+ *         ⬇
+ * <svg viewBox="0 0 200.284 200.284" enable-background="new 0 0 200.284 200.284">
+ *
+ *
+ * <polygon points="208.250977 77.1308594 223.069336 ... "/>
+ *         ⬇
+ * <polygon points="208.251 77.131 223.069 ... "/>
+ *
+ *
+ * @param {Object} item current iteration item
+ * @param {Object} params plugin params
+ * @return {Boolean} if false, item will be filtered out
+ *
+ * @author kiyopikko
+ */
+exports.fn = function(item, params) {
+
+
+    if ( item.hasAttr('points') ) {
+        roundValues(item.attrs.points);
+    }
+
+    if ( item.hasAttr('enable-background') ) {
+        roundValues(item.attrs["enable-background"]);
+    }
+
+    if ( item.hasAttr('viewBox') ) {
+        roundValues(item.attrs.viewBox);
+    }
+
+    if ( item.hasAttr('stroke-dasharray') ) {
+        roundValues(item.attrs["stroke-dasharray"]);
+    }
+
+    if ( item.hasAttr('dx') ) {
+        roundValues(item.attrs.dx);
+    }
+
+    if ( item.hasAttr('dy') ) {
+        roundValues(item.attrs.dy);
+    }
+
+    if ( item.hasAttr('x') ) {
+        roundValues(item.attrs.x);
+    }
+
+    if ( item.hasAttr('y') ) {
+        roundValues(item.attrs.y);
+    }
+
+
+    function roundValues($prop){
+
+        var num, units,
+            match,
+            matchNew,
+            lists = $prop.value,
+            listsArr = lists.split(regSeparator),
+            roundedListArr = new Array(),
+            roundedList;
+
+        listsArr.forEach(function(elem){
+
+            match = elem.match(regNumericValues);
+            matchNew = elem.match(/new/);
+
+             // if attribute value matches regNumericValues
+            if(match){
+
+                // round it to the fixed precision
+                num = +(+match[1]).toFixed(params.floatPrecision),
+                units = match[3] || '';
+
+                 // and remove leading zero
+                if (params.leadingZero) {
+                    num = removeLeadingZero(num);
+                }
+
+                // remove default 'px' units
+                if (params.defaultPx && units === 'px') {
+                    units = '';
+                }
+
+                roundedListArr.push(num);
+
+            }
+            // if attribute value is "new"(only enable-background).
+            else if(matchNew){
+
+                roundedListArr.push("new");
+
+            }
+
+        });
+
+        roundedList = roundedListArr.join(" ");
+        $prop.value = roundedList;
+
+    }
+
+};