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src/tools/analysis/mecab.js

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+// Original source code: https://github.com/hecomi/node-mecab-async
+// CUSTOMIZED BY SYUILO
+
+var exec     = require('child_process').exec;
+var execSync = require('child_process').execSync;
+var sq       = require('shell-quote');
+
+const config = require('../../conf').default;
+
+// for backward compatibility
+var MeCab = function() {};
+
+MeCab.prototype = {
+    command : config.analysis.mecab_command ? config.analysis.mecab_command : 'mecab',
+    _format: function(arrayResult) {
+        var result = [];
+        if (!arrayResult) { return result; }
+        // Reference: http://mecab.googlecode.com/svn/trunk/mecab/doc/index.html
+        // 表層形\t品詞,品詞細分類1,品詞細分類2,品詞細分類3,活用形,活用型,原形,読み,発音
+        arrayResult.forEach(function(parsed) {
+            if (parsed.length <= 8) { return; }
+            result.push({
+                kanji         : parsed[0],
+                lexical       : parsed[1],
+                compound      : parsed[2],
+                compound2     : parsed[3],
+                compound3     : parsed[4],
+                conjugation   : parsed[5],
+                inflection    : parsed[6],
+                original      : parsed[7],
+                reading       : parsed[8],
+                pronunciation : parsed[9] || ''
+            });
+        });
+        return result;
+    },
+    _shellCommand : function(str) {
+        return sq.quote(['echo', str]) + ' | ' + this.command;
+    },
+    _parseMeCabResult : function(result) {
+        return result.split('\n').map(function(line) {
+            return line.replace('\t', ',').split(',');
+        });
+    },
+    parse : function(str, callback) {
+        process.nextTick(function() { // for bug
+            exec(MeCab._shellCommand(str), function(err, result) {
+                if (err) { return callback(err); }
+                callback(err, MeCab._parseMeCabResult(result).slice(0,-2));
+            });
+        });
+    },
+    parseSync : function(str) {
+        var result = execSync(MeCab._shellCommand(str));
+        return MeCab._parseMeCabResult(String(result)).slice(0, -2);
+    },
+    parseFormat : function(str, callback) {
+        MeCab.parse(str, function(err, result) {
+            if (err) { return callback(err); }
+            callback(err, MeCab._format(result));
+        });
+    },
+    parseSyncFormat : function(str) {
+        return MeCab._format(MeCab.parseSync(str));
+    },
+    _wakatsu : function(arr) {
+        return arr.map(function(data) { return data[0]; });
+    },
+    wakachi : function(str, callback) {
+        MeCab.parse(str, function(err, arr) {
+            if (err) { return callback(err); }
+            callback(null, MeCab._wakatsu(arr));
+        });
+    },
+    wakachiSync : function(str) {
+        var arr = MeCab.parseSync(str);
+        return MeCab._wakatsu(arr);
+    }
+};
+
+for (var x in MeCab.prototype) {
+    MeCab[x] = MeCab.prototype[x];
+}
+
+module.exports = MeCab;