Question

我有数千行的chrome控制台日志，其格式如下。

10:52:52.041 VM757:15 __popover4
10:52:52.041 VM757:16 Error: dummy
    at fnClass._createPopover (ColorPicker.js:339)
    at fnClass.init (ColorPicker.js:127)
    at fnClass.constructor (ManagedObject-dbg.js?eval:451)
    at fnClass.constructor (Element-dbg.js?eval:99)
    at fnClass.constructor (Control-dbg.js?eval:103)
10:52:52.041 VM757:15 __layout331
10:52:52.042 VM757:16 Error: dummy
    at fnClass.constructor (ManagedObject-dbg.js?eval:385)
    at fnClass.constructor (Element-dbg.js?eval:99)
    at fnClass.constructor (Control-dbg.js?eval:103)
    at new fnClass (Metadata-dbg.js?eval:346)
10:52:52.042 VM757:15 __chooser4
10:52:52.042 VM757:16 Error: dummy

我想要做的是，在两个10:52:52之间，如果字符串包含一个关键字：color（例如ColorPicker.js），则删除第一个字符串中的部分字符串。 10：52：52＆＃34;到最后＆＃34; 10：52：52＆＃34;。例如，因为下划线字符串包含关键字颜色，应删除整个字符串。

10:52:52.041 VM757:16 Error: dummy
    at fnClass._createPopover (ColorPicker.js:339)
    at fnClass.init (ColorPicker.js:127)
    at fnClass.constructor (ManagedObject-dbg.js?eval:451)
    at fnClass.constructor (Element-dbg.js?eval:99)
    at fnClass.constructor (Control-dbg.js?eval:103)
10:52:52.041 VM757:15 __layout331

然后被操纵的剩余字符串是：

10:52:52.041 VM757:15 __popover4
10:52:52.042 VM757:16 Error: dummy
    at fnClass.constructor (ManagedObject-dbg.js?eval:385)
    at fnClass.constructor (Element-dbg.js?eval:99)
    at fnClass.constructor (Control-dbg.js?eval:103)
    at new fnClass (Metadata-dbg.js?eval:346)
10:52:52.042 VM757:15 __chooser4
10:52:52.042 VM757:16 Error: dummy

更具体地说，这是我的伪代码：

var sOriginal = import log file;
while(sOriginal is not reach the end){
    var bShouldBeRemoved = false;
    var bStartedPointFound = false;
    if(bStartedPointFound == false && string match "10:52:52"){
        mark it as the start point;
        bStartedPointFound = true;
        while(!string reach the next "10:52:52" || !reach end of the string){
            if(string contains "color"){
                bShouldBeRemoved = true;
            }
        }
        if(bShouldBeRemoved === true){
            remove the part of the string from the first "10:52:52"
        }
    }
}

return sResult

Answer 1

首先，您需要将日志分成块，您可以按换行符拆分字符串，然后遍历给定的数组。获得一系列行后，您需要拆分每一行并确定它是否属于某个块。

每当你有一个块数组时，你可以搜索你的关键字，如果找到，删除该块。

const log = `10:52:52.041 VM757:15 __popover4
10:52:52.041 VM757:16 Error: dummy
    at fnClass._createPopover (ColorPicker.js:339)
    at fnClass.init (ColorPicker.js:127)
    at fnClass.constructor (ManagedObject-dbg.js?eval:451)
    at fnClass.constructor (Element-dbg.js?eval:99)
    at fnClass.constructor (Control-dbg.js?eval:103)
10:52:52.041 VM757:15 __layout331
10:52:52.042 VM757:16 Error: dummy
    at fnClass.constructor (ManagedObject-dbg.js?eval:385)
    at fnClass.constructor (Element-dbg.js?eval:99)
    at fnClass.constructor (Control-dbg.js?eval:103)
    at new fnClass (Metadata-dbg.js?eval:346)
10:52:52.042 VM757:15 __chooser4
10:52:52.042 VM757:16 Error: dummy`;

function cleanLog(log, term) {
  const lines = log.split("\n");

  const blocks = lines.reduce((acc, line) => {
    if (/^\d+:\d+/.test(line)) {
      acc.push([line]);
    } else {

      acc[acc.length - 1].push(line);
    }
    return acc;
  }, []);

  return blocks.filter((block) => block.join('').indexOf(term) === -1)
}

console.log(cleanLog(log, 'Color'));

在JavaScript中处理和过滤具有类似模式的大字符串

1 个答案: