mac上使用imagealpha命令对图片进行压缩批处理

 1 #! /bin/bash
 2
 3
 4 #BASE_DIR="/Users/jiading/Documents/basepng";
 5 #OUTPUT_DIR="/Users/jiading/Documents/output";
 6 BASE_DIR="/Users/jiading/Documents/SwordsmanApp/art/序列帧动画/实验-分段版/9_选择迷你板固定";
 7 OUTPUT_DIR="/Users/jiading/Documents/SwordsmanApp/art/序列帧动画/实验-分段版output最强压缩9";
 8
 9 CUR_READ_DIR="";
10 CUR_WRITE_DIR="";
11
12
13 dopng(){
14
15 readPng=$1;
16 writePng=$2;
17 fileName=$3;
18 fileName=${fileName%.*}".png";
19 echo "图片: "$fileName;
20
21 #speed  1-11
22
23 sudo /Applications/ImageAlpha.app/Contents/MacOS/pngquant -f $readPng -o $writePng"/$fileName" --quality 10 --speed 1 --nofs  --posterize 0
24
25
26 }
27
28
29 loopDir(){
30
31 #1 进入当前读取目录
32 cd $1;
33
34    for file in *;
35          do
36
37 localReadDir=$1;
38 localWriteDir=$2;
39
40
41         if [ -d $file ];then
42             echo $file" is a dir";
43
44 #2 进入一个目录
45 CUR_WRITE_DIR=$localWriteDir"/$file"
46
47 #3 创建对应新目录
48 echo "创建目录："$CUR_WRITE_DIR;
49 mkdir $CUR_WRITE_DIR
50
51 #4 进入下一级遍历
52 loopDir $localReadDir"/$file" $localWriteDir"/$file"
53
54 #5 下一级遍历完之后回到当前目录
55 cd $1;
56
57         elif [ -f $file ];then
58
59
60         dopng $localReadDir"/$file" $localWriteDir "$file"
61
62         fi
63
64         done
65
66 }
67
68 main(){
69
70 #1,删掉旧目录
71 if [ -d $OUTPUT_DIR ];then
72 echo "ouput目录已存在，立马删除";
73 rm -rf $OUTPUT_DIR
74 fi
75
76 #2,创建output跟目录
77 mkdir $OUTPUT_DIR
78
79
80 #3,开始遍历读取
81 CUR_READ_DIR=$BASE_DIR
82 CUR_WRITE_DIR=$OUTPUT_DIR
83 loopDir $CUR_READ_DIR $CUR_WRITE_DIR
84
85 echo "=-=-=-压缩完成=-=-=-="
86 }
87
88 main