图像

节点标记 (限量全球正则表达式打印)

安装

用节点.js

$ npm install @apexearth/egrep --save

带有命令行的使用

$ npm install @apexearth/egrep -g

节点使用

let egrep = require('@apexearth/egrep')
let stream = egrep({
    pattern: /test[1-9]/,
    files: [
        'test_files/file1.txt',
        'test_files/',
    ],
    recursive: true,
})
stream.on('data', data => {
    console.log(data)
})
stream.on('error', err => {
    console.log(err)
})
stream.on('close', () => {
    console.log('closed')
})

输出 :

{ file: 'test_files/file1.txt', line: 'aaaaaaatest4aaaaaaa' }

重复使用 :

egrep({
    pattern: /test[1-9]/,
    files: [
        'test_files/file1.txt',
        'test_files/',
    ],
    recursive: true,
    objectMode: false,
}, (err, result) => {
    if (err) console.log(err)
    console.log(result)
})

输出 :

test_files/file1.txt:aaaaaaatest4aaaaaaa

选项

• files: 文件,文件夹,或 grep 的 globs .
• pattern: 用于grep的图案.
• glob: 将文件选项视为 glob .
• recursive:通过文件夹递归grep.
• ignoreCase: 执行大小写不敏感匹配.
• excludes: RegExp 排除序列.
• objectMode设置 false 以接收字符串数据.
• fullBinaryMatches设置 true 以显示完整的二进制匹配.
• hideBinaryMatches设置 true 以隐藏所有二进制匹配.

命令行使用量

Usage: node-egrep [options] <pattern> <file...>

Options:
  -V, --version      output the version number
  -r, --recursive    Walk through directories recursively.
  -R, --recursive    Walk through directories recursively.
  -g, --glob         Treat file args as globs.
  -i, --ignore-case  Perform case insensitive matching.
  -f, --file <file>  Read one or more newline separated patterns from file. Empty pattern lines match every input line.
  --exec <cmd>       Execute a command for each match with {1}=file {2}=line
  -h, --help         output usage information

实例:

$ node-egrep 123 test_files/numbers
1234567890

$ node-egrep -r abc test_files
test_files/one/abc:abcdefg
test_files/one/two/letters:abc

$ node-egrep -g abc "test_files/**"
test_files/one/abc:abcdefg
test_files/one/two/letters:abc

兼容性

节点.js版本8,10和11.