code beauty: moved some code into util.js

git-svn-id: http://svn.klever.net/kin/fireflix/trunk@168 fe716a7a-6dde-0310-88d9-d003556173a8

1 files changed, 61 insertions, 0 deletions

diff --git a/content/util.js b/content/util.js
new file mode 100644
index 0000000..5af0978
--- a/dev/null
+++ b/content/util.js
@@ -0,0 +1,61 @@
+/*
+ * convert unicode string to utf-8 representation.
+ * needed for correct md5 hash calculation.
+ */
+function toutf8(ucode) {
+ var rv = '';
+ for(var i=0;i<ucode.length;++i) {
+  var cc = ucode.charCodeAt(i);
+  if(cc<=0x7F)
+   rv += ucode.charAt(i);
+  else if(cc<=0x7ff)
+   rv += String.fromCharCode(
+    0xc0|((cc>> 6)&0x1f),
+    0x80|( cc     &0x3f) );
+  else if(cc<=0xffff)
+   rv += String.fromCharCode(
+    0xe0|((cc>>12)&0x0f),
+    0x80|((cc>> 6)&0x3f),
+    0x80|( cc     &0x3f) );
+  else if(cc<=0x1fffff)
+   rv += String.fromCharCode(
+    0xf0|((cc>>18)&0x07),
+    0x80|((cc>>12)&0x3f),
+    0x80|((cc>> 6)&0x3f),
+    0x80|( cc     &0x3f) );
+  else if(cc<=0x03ffffff)
+   rv += String.fromCharCode(
+    0xf8|((cc>>24)&0x03),
+    0x80|((cc>>18)&0x3f),
+    0x80|((cc>>12)&0x3f),
+    0x80|((cc>> 6)&0x3f),
+    0x80|( cc     &0x3f) );
+  else if(cc<=0x7fffffff)
+   rv += String.fromCharCode(
+    0xfc|((cc>>30)&0x01),
+    0x80|((cc>>24)&0x3f),
+    0x80|((cc>>18)&0x3f),
+    0x80|((cc>>12)&0x3f),
+    0x80|((cc>> 6)&0x3f),
+    0x80|( cc     &0x3f) );
+ }
+ return rv;
+}
+
+/*
+ * extract xpath-specified string value
+ */
+function xp_str(xp,x) {
+ var rv = x.evaluate(
+  xp, x, null, XPathResult.STRING_TYPE, null );
+ return rv.stringValue;
+}
+/*
+ * extract xpath-specified node
+ */
+function xp_node(xp,x) {
+ var rv = x.evaluate(
+  xp, x, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null );
+ return rv.singleNodeValue;
+}
+