improve find-in-jars: color grep match pattern #63

Author: oldratlee

docs/java.md

@@ -20,6 +20,7 @@
 - [:beer: find-in-jars](#beer-find-in-jars)
     - [用法](#%E7%94%A8%E6%B3%95-2)
     - [示例](#%E7%A4%BA%E4%BE%8B-2)
+    - [运行效果](#%E8%BF%90%E8%A1%8C%E6%95%88%E6%9E%9C)
     - [参考资料](#%E5%8F%82%E8%80%83%E8%B5%84%E6%96%99)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
@@ -399,6 +400,12 @@ WEB-INF/lib/aspectjweaver-1.8.8.jar!org/aspectj/weaver/XlintDefault.properties
 ......
 ```
 
+### 运行效果
+
+支持彩色输出，文件名中的匹配部分以`grep`的高亮方式显示。
+
+![](https://user-images.githubusercontent.com/1063891/33545067-9eb66072-d8a2-11e7-8a77-d815c0979e5e.gif)
+
 ### 参考资料
 
 [在多个Jar(Zip)文件查找Log4J配置文件的Shell命令行](http://oldratlee.com/458/tech/shell/find-file-in-jar-zip-files.html)

find-in-jars

@@ -185,15 +185,17 @@ readonly total_count="$(echo "$jar_files" | wc -l)"
     exit 1
 }
 
+$is_console && readonly grep_color_option='--color=always'
+
 counter=1
 while read jar_file; do
     printResponsiveMessage "finding in jar($((counter++))/$total_count): $jar_file"
 
-    $command_for_list_zip "${jar_file}" | grep $regex_mode $ignore_case_option "$pattern" | while read file; do
+    $command_for_list_zip "${jar_file}" | grep $regex_mode $ignore_case_option $grep_color_option -- "$pattern" | while read file; do
         clearResponsiveMessage
 
         $is_console &&
-            echo "$ec[1;31m${jar_file}$eend"\!"$ec[1;32m${file}$eend" ||
+            echo "$ec[1;31m${jar_file}$eend$ec[1;32m"\!"$eend${file}" ||
             echo "${jar_file}"\!"${file}"
     done