用于查找文件内容中所有出现的 'NSLocalizedString' 的正则表达式

Regex expression to find all occurences of 'NSLocalizedString' in file contents

测试用例:

// With text and comment
NSLocalizedString(@"Example Text", @"Example Comment");

// With text and no comment
NSLocalizedString(@"Example, text", nil) 

// With text and comment with paranthesis
NSLocalizedString(@"Example text", @"Example (with paranthesis) comment") 

// With property and no comment
NSLocalizedString(test, nil)

// With property and comment
NSLocalizedString(test, @"Example comment")

// Inline
NSLocalizedString(@"Error", nil) NSLocalizedString(@"Change settings", @"Option to change HTTP Post settings") NSLocalizedString(@"Cancel", nil)

我要找的是:每次 NSLocalizedString 出现一个匹配项,有两个捕获组(键和注释)。键可能有一个值或者是 nil.

我尝试过的:r'NSLocalizedString\((.*)\s*,\s*(.*)\)'

这适用于大多数情况,除了最后一个(内联),因为它匹配最后一个逗号。

正则表达式 101:https://regex101.com/r/4OJgU2/6

您可以使用

解决问题
r'(?s)NSLocalizedString\(\s*(@\"[^\"\]*(?:\.[^\"\]*)*\"|\w+)\s*,\s*(@\"[^\"\]*(?:\.[^\"\]*)*\"|\w+)\)'

和替换

r'NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], , )'

详情

  • NSLocalizedString\( - NSLocalizedString( 子字符串
  • \s* - 0+ 个空格
  • (@\"[^\"\]*(?:\.[^\"\]*)*\"|\w+) - 第 1 组:
    • @\"[^\"\]*(?:\.[^\"\]*)*\" - @" 后跟 " 以外的 0+ 个字符,\ 后跟任何转义字符的 0+ 次重复,后跟 0+ 个字符以外的字符"\ 然后是 " (它是 Obj-C 字符串文字匹配模式)
    • | - 或
    • \w+ - 1+ 个单词字符
  • \s*,\s* - , 包含 0+ 个空格
  • (@\"[^\"\]*(?:\.[^\"\]*)*\"|\w+) - 第 2 组
  • \) - 一个 ) 字符。

参见 Python demo:

import re
strs = ['NSLocalizedString(@"Example Text", @"Example Comment");', 'NSLocalizedString(@"Example, text", nil)', 'NSLocalizedString(@"Example text", @"Example (with paranthesis) comment")', 'NSLocalizedString(test, nil)', 'NSLocalizedString(test, @"Example comment")', 'NSLocalizedString(@"Error", nil) NSLocalizedString(@"Change settings", @"Option to change HTTP Post settings") NSLocalizedString(@"Cancel", nil)']
pat = re.compile(r'NSLocalizedString\(\s*(@\"[^\"\]*(?:\.[^\"\]*)*\"|\w+)\s*,\s*(@\"[^\"\]*(?:\.[^\"\]*)*\"|\w+)\)', re.DOTALL)
repl = r'NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], , )'
for s in strs:
    print('----------------------------------\n{}\nVVVVVVVVVVVVVVVVVVVV'.format(s))
    res = pat.sub(repl, s)
    print(res)

输出:

----------------------------------
NSLocalizedString(@"Example Text", @"Example Comment");
VVVVVVVVVVVVVVVVVVVV
NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], @"Example Text", @"Example Comment");
----------------------------------
NSLocalizedString(@"Example, text", nil)
VVVVVVVVVVVVVVVVVVVV
NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], @"Example, text", nil)
----------------------------------
NSLocalizedString(@"Example text", @"Example (with paranthesis) comment")
VVVVVVVVVVVVVVVVVVVV
NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], @"Example text", @"Example (with paranthesis) comment")
----------------------------------
NSLocalizedString(test, nil)
VVVVVVVVVVVVVVVVVVVV
NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], test, nil)
----------------------------------
NSLocalizedString(test, @"Example comment")
VVVVVVVVVVVVVVVVVVVV
NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], test, @"Example comment")
----------------------------------
NSLocalizedString(@"Error", nil) NSLocalizedString(@"Change settings", @"Option to change HTTP Post settings") NSLocalizedString(@"Cancel", nil)
VVVVVVVVVVVVVVVVVVVV
NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], @"Error", nil) NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], @"Change settings", @"Option to change HTTP Post settings") NSLocalizedStringWithDefaultValue(@"elementID", nil, [NSBundle mainBundle], @"Cancel", nil)