64 lines
1.4 KiB
Markdown
64 lines
1.4 KiB
Markdown
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---
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title: 提取路径
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updated: 2022-03-14 07:47:18Z
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created: 2022-01-10 03:35:59Z
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tags:
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- aardio
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- cadence
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- 代码块
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- 数据筛选
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---
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cadence的用户配置文件env中路径信息格式有些特殊。
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键值中各路径信息之间用空格` `分隔，路径信息中存在空格的，此路径信息放于`""`对之间，如
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```
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set psmpath = $psmpath E:\lib\psm\
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set padpath = $padpath E:\lib\pad\
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set viewpath = $viewpath "E:\usercfg\test path\"
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```
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透过现象看本质是选择算法的重要前提，不可先入为主，不可被表象误导。
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**此需求的本质**，是从字符串中提取两种东西：
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1. 不含空格或引号的字符序列；
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1. 以引号开头和结尾的字符序列
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故可采用以下方法：
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> 若没有混排则可直接调用`string.split`进行分割
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```
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import console;
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var str = /*************
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$viewpath "E:\usercfg\test path\" E:\lib\pad\ "E:\usercfg\test path 2\" $viewpath2
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*************/
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import preg
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var pattern = //[^\s"]+|"[^"]*"
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var regex = preg(pattern)
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var res= {}
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for m in regex.gmatch( str) {
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table.push(res,m)
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}
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console.dump(res)
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console.pause(true);
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```
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结果为
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```
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{
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[1]="$viewpath";
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[2]='"E:\\usercfg\\test path\\"';
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[3]="E:\lib\pad\";
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[4]='"E:\\usercfg\\test path 2\\"';
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[5]="$viewpath2"
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}
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请按任意键继续 ...
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```
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提取所有键对的程序见
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[提取路径.aardio](../_resources/提取路径_提取路径.aardio)
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#aardio
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#cadence
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#代码块
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#数据筛选
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