From a6ee0cfae21abaf43b6dcfaca681739da1518b8b Mon Sep 17 00:00:00 2001
From: Alex Yatskov <alex@foosoft.net>
Date: Wed, 2 Nov 2016 22:31:31 -0700
Subject: [PATCH] Add stub for meta generator

---
 main.go |  1 +
 meta.go | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 meta.go

diff --git a/main.go b/main.go
index b88e299..b83ed48 100644
--- a/main.go
+++ b/main.go
@@ -44,6 +44,7 @@ func usage() {
 
 func outputJson(fileFormat, inputPath, outputDir string, flags int) error {
 	handlers := map[string]func(string, io.Reader, int) error{
+		"meta":     outputMetaJson,
 		"edict":    outputEdictJson,
 		"enamdict": outputJmnedictJson,
 		"kanjidic": outputKanjidicJson,
diff --git a/meta.go b/meta.go
new file mode 100644
index 0000000..456faec
--- /dev/null
+++ b/meta.go
@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 2016 Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"path"
+
+	"github.com/FooSoft/jmdict"
+)
+
+func outputMetaIndex(outputDir string, entries []termSource, entities map[string]string, pretty bool) error {
+	if err := os.MkdirAll(outputDir, 0755); err != nil {
+		return err
+	}
+
+	outputIndex, err := os.Create(path.Join(outputDir, "index.json"))
+	if err != nil {
+		return err
+	}
+	defer outputIndex.Close()
+
+	dict := buildTermIndex(entries, entities)
+	indexBytes, err := marshalJson(dict, pretty)
+	if err != nil {
+		return err
+	}
+
+	if _, err = outputIndex.Write(indexBytes); err != nil {
+		return err
+	}
+
+	defCnt := len(dict.defs)
+	for i := 0; i < defCnt; i += BANK_STRIDE {
+		outputRef, err := os.Create(path.Join(outputDir, fmt.Sprintf("bank_%d.json", i/BANK_STRIDE+1)))
+		if err != nil {
+			return err
+		}
+		defer outputRef.Close()
+
+		indexSrc := i
+		indexDst := i + BANK_STRIDE
+		if indexDst > defCnt {
+			indexDst = defCnt
+		}
+
+		refBytes, err := marshalJson(dict.defs[indexSrc:indexDst], pretty)
+		if err != nil {
+			return err
+		}
+
+		if _, err = outputRef.Write(refBytes); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func outputMetaJson(outputDir string, reader io.Reader, flags int) error {
+	dict, entities, err := jmdict.LoadJmdictNoTransform(reader)
+	if err != nil {
+		return err
+	}
+
+	var entries []termSource
+	for _, e := range dict.Entries {
+		entries = append(entries, convertEdictEntry(e)...)
+	}
+
+	return outputMetaIndex(outputDir, entries, entities, flags&flagPrettyJson == flagPrettyJson)
+}