* add hash.js: md2|md5|sha1|sha256|sha384|sha512 hash of file

git-svn-id: http://svn.coderepos.org/share/lang/javascript/vimperator-plugins/trunk@28532 d0d07461-0603-4401-acd4-de1884942a52

1 files changed, 88 insertions, 0 deletions

diff --git a/hash.js b/hash.js
new file mode 100644
index 0000000..1f3422f
--- /dev/null
+++ b/hash.js
@@ -0,0 +1,88 @@
+// PLUGIN_INFO//{{{
+var PLUGIN_INFO =
+<VimperatorPlugin>
+    <name>{NAME}</name>
+    <description>hash of file</description>
+    <author mail="konbu.komuro@gmail.com" homepage="http://d.hatena.ne.jp/hogelog/">hogelog</author>
+    <version>0.1</version>
+    <minVersion>2.0pre</minVersion>
+    <maxVersion>2.0pre</maxVersion>
+    <updateURL>http://svn.coderepos.org/share/lang/javascript/vimperator-plugins/trunk/hash.js</updateURL>
+    <detail><![CDATA[
+
+== COMMANDS ==
+hash:
+    :hash md2|md5|sha1|sha256|sha384|sha512 file-path
+
+]]></detail>
+</VimperatorPlugin>;
+//}}}
+
+(function() {
+    const PR_UINT_MAX = 0xffffffff;
+    const Cc = Components.classes;
+    const Ci = Components.interfaces;
+    const Algos = [
+        ["md2", "MD2 Algorithm"],
+        ["md5", "MD5 Algorithm"],
+        ["sha1", "SHA1 Algorithm"],
+        ["sha256", "SHA256 Algorithm"],
+        ["sha384", "SHA385 Algorithm"],
+        ["sha512", "SHA512 Algorithm"],
+    ];
+
+    function getStream(path)
+    {
+        let file = io.getFile(path);
+        let stream = Cc["@mozilla.org/network/file-input-stream;1"]
+            .createInstance(Ci.nsIFileInputStream);
+        stream.init(file, 0x01, 0444, 0);
+        return stream;
+    }
+
+    // return the two-digit hexadecimal code for a byte
+    function toHexString(charCode)
+    {
+      return ("0" + charCode.toString(16)).slice(-2);
+    }
+
+
+    commands.addUserCommand(["hash"], "hash of file",
+        function(args){
+            if (args.length!=2) {
+    
+                liberator.echo("usage \":hash md2|md5|sha1|sha256|sha384|sha512 file-path\"");
+                return false;
+            }
+            let [algo, path] = args;
+            let stream = getStream(path);
+
+            let crypt = Cc["@mozilla.org/security/hash;1"]
+                .createInstance(Ci.nsICryptoHash);
+            crypt.initWithString(algo);
+
+            // read the entire stream
+            crypt.updateFromStream(stream, PR_UINT_MAX);
+
+            // get base-64 string
+            let hash = crypt.finish(false);
+
+            // convert the binary hash data to a hex string.
+            let str = [toHexString(hash.charCodeAt(i)) for(i in hash)].join("");
+            util.copyToClipboard(str, true);
+        },
+        {
+            bang: true,
+            completer: function (context){
+                let args = context.value.split(/\s/);
+                if (args.length<=2) {
+                    context.title = "hash algorithm";
+                    context.completions = Algos;
+                } else if (args.length==3) {
+                    completion.url(context, "f");
+                }
+            },
+        });
+
+})();
+// vim: fdm=marker sw=4 ts=4 et: