add helper tool for starting new mode

tool/add_mode.js

@@ -0,0 +1,101 @@
+var fs = require('fs');
+var lib = require('./lib');
+var path = require('path');
+
+var args = process.argv.slice(2);
+
+
+var displayName = args[0];
+var extRe = args[1];
+if (!displayName || ! extRe) {
+    console.log("Usage: ModeName ext1|ext2");
+    process.exit(1);
+}
+
+var name = lib.snakeCase(displayName).replace(/[^\w]/g, "");
+
+/** demo **/
+var demoFileExt = extRe.split("|")[0] || name;
+var demoFileName = demoFileExt[0] == "^" ? demoFileExt.substr(1) : name + "." + demoFileExt;
+var demoFilePath = lib.AceRoot + "demo/kitchen-sink/docs/" + demoFileName;
+fs.writeFileSync(demoFilePath, "TODO add a nice demo!", "utf8");
+console.log("Created demo file at: " + path.normalize(demoFilePath));
+
+/** mode **/
+var template = fs.readFileSync(__dirname + "/mode.tmpl.js", "utf8");
+var modePath = lib.AceLib + "ace/mode/" + name + ".js";
+var text = lib.fillTemplate(template, {
+    languageHighlightFilename: name,
+    languagename: name,
+    lineCommentStart: "TODO",
+    blockCommentStart: "TODO",
+    blockCommentEnd: "TODO"
+});
+fs.writeFileSync(modePath, text);
+console.log("Created mode file at: " + path.normalize(modePath));
+
+/** highlight rules **/
+template = fs.readFileSync(__dirname + "/mode_highlight_rules.tmpl.js", "utf8");
+var hlPath = lib.AceLib + "ace/mode/" + name + "_highlight_rules.js";
+template = template.replace(/\/\* THIS[\s\S]*?\*{3}\/\s*/, "");
+text = lib.fillTemplate(template, {
+    language: name,
+    languageTokens: '{\n\
+        start: [{\n\
+            token: "string.start",\n\
+            regex: \'"\',\n\
+            next: "qstring"\n\
+        }],\n\
+        qstring: [{\n\
+            token: "escape",\n\
+            regex: /\\\\./,\n\
+        }, {\n\
+            token: "string.end",\n\
+            regex: \'"\',\n\
+            next: "start"\n\
+        }],\n\
+    }'
+});
+fs.writeFileSync(hlPath, text);
+console.log("Created mode file at: " + path.normalize(hlPath));
+
+/** snippets **/
+template = fs.readFileSync(__dirname + "/tmsnippets.tmpl.js", "utf8");
+var snipetsPath = lib.AceLib + "ace/snippets/" + name + ".js";
+text = lib.fillTemplate(template, {
+    languagename: name,
+    snippets: ""
+});
+fs.writeFileSync(snipetsPath, text);
+console.log("Created snippets file at: " + path.normalize(snipetsPath));
+
+/** modelist **/
+var modelistPath = lib.AceLib + "ace/ext/modelist.js";
+var modelist = fs.readFileSync(modelistPath, "utf8").replace(/\r\n?/g, "\n");
+modelist = modelist.replace(/(supportedModes = {\n)([\s\S]*?)(\n^};)/m, function(_, m1, m2, m3) {
+    var langs = m2.split(/,\n/);
+    var offset = langs[0].trim().indexOf("[");
+    var padding = Array(Math.max(offset - displayName.length - 1, 0) + 1).join(" ");
+    var newLang = "    " + displayName + ":" + padding + "[\"" + extRe + "\"]";
+    langs = langs.concat(newLang).map(function(x) {
+        return {
+            value: x,
+            id: x.match(/[^"':\s]+/)[0].toLowerCase()
+        };
+    });
+    langs[langs.length - 1].isNew = true;
+    
+    langs = langs.filter(function(x) {
+        return x.id != name || x.isNew;
+    });
+    langs = langs.sort(function(a, b) {
+        return a.id.localeCompare(b.id);
+    }).map(function(x) {
+        return x.value;
+    });
+    
+    return m1 + langs.join(",\n") + m3;
+});
+fs.writeFileSync(modelistPath, modelist, "utf8");
+console.log("Updated modelist at: " + path.normalize(modelistPath));
+