From 3430ba7f24bd6381a2754f6ea6f3c3c3f34b99e4 Mon Sep 17 00:00:00 2001
From: chai2010 <chaishushan@gmail.com>
Date: Tue, 5 Jan 2016 13:55:18 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=20addlinks.go=20=E8=84=9A?=
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 =?UTF-8?q?=E6=8E=A5?=
MIME-Version: 1.0
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---
 addlinks.go | 122 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 addlinks.go

diff --git a/addlinks.go b/addlinks.go
new file mode 100644
index 0000000..580a7df
--- /dev/null
+++ b/addlinks.go
@@ -0,0 +1,122 @@
+// Copyright 2015 <chaishushan{AT}gmail.com>. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build ingore
+
+//
+// 给特殊模式标定的单词增加链接.
+//
+// Example:
+//	addlinks
+//	addlinks dir "\.go$"
+//
+// Help:
+//	addlinks -h
+//
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"regexp"
+	"unicode/utf8"
+)
+
+const MaxFileSize = 8 << 20 // 8MB
+
+const usage = `
+Usage: addlinks dir [nameFilter]
+       addlinks -h
+
+Example:
+  addlinks
+  addlinks dir "\.go$"
+    
+Report bugs to <chaishushan{AT}gmail.com>.
+`
+
+func main() {
+	if len(os.Args) < 2 || os.Args[1] == "-h" {
+		fmt.Fprintln(os.Stderr, usage[1:len(usage)-1])
+		os.Exit(0)
+	}
+	dir, nameFilter := os.Args[1], ".*"
+	if len(os.Args) > 2 {
+		nameFilter = os.Args[2]
+	}
+
+	total := 0
+	filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			log.Fatal("filepath.Walk: ", err)
+			return err
+		}
+		if info.IsDir() {
+			return nil
+		}
+		relpath, err := filepath.Rel(dir, path)
+		if err != nil {
+			log.Fatal("filepath.Rel: ", err)
+			return err
+		}
+		mathed, err := regexp.MatchString(nameFilter, relpath)
+		if err != nil {
+			log.Fatal("regexp.MatchString: ", err)
+		}
+		if mathed {
+			if changed := convertFile(path); changed {
+				fmt.Printf("%s\n", relpath)
+				total++
+			}
+		}
+		return nil
+	})
+	fmt.Printf("total %d\n", total)
+}
+
+func convertFile(path string) (changed bool) {
+	abspath, err := filepath.Abs(path)
+	if err != nil {
+		log.Fatal("convertFile: filepath.Abs:", err)
+	}
+
+	fi, err := os.Lstat(abspath)
+	if err != nil {
+		log.Fatal("convertFile: os.Lstat:", err)
+	}
+	if fi.Size() > MaxFileSize {
+		return false
+	}
+
+	oldData, err := ioutil.ReadFile(abspath)
+	if err != nil {
+		log.Fatal("convertFile: ioutil.ReadFile:", err)
+	}
+	if !utf8.Valid(oldData) {
+		return false
+	}
+
+	newData := oldData
+	for k, v := range _LinksTable {
+		newData = bytes.Replace(oldData, []byte(k), []byte(v), -1)
+	}
+
+	if string(newData) == string(oldData) {
+		return false
+	}
+
+	err = ioutil.WriteFile(abspath, newData, 0666)
+	if err != nil {
+		log.Fatal("convertFile: ioutil.WriteFile:", err)
+	}
+	return true
+}
+
+var _LinksTable = map[string]string{
+	"[Alan A. A. Donovan]()": "[Alan A. A. Donovan](https://github.com/adonovan)",
+}