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我无法找到具有平衡标签的正则表达式,一个用于打开,一个用于关闭。 标签必须包含多行文字;并且标记是动态的,在编译时未定义NSRegularexpression multiline and stack
我无法匹配与开始标记对应的结束标记,例如{{home}} - > {{/ home}}和{{hello}} - > {{/ hello}};它匹配{{家}}到{{/你好}} 任何帮助,将不胜感激
任何帮助,将不胜感激
葛瑞格尔
PS:我评论非工作正则表达式
NSString * string;
NSError* error = nil;
NSRegularExpression* regex;
NSArray* matches;
string =
@" The {{demo}}following tables describe the {{/demo}}character expressions"
" used by the regular expression to match patterns within "
" a string,{{home}} the pattern operators that specify how many"
" times a pattern is matched and additional matching"
" restrictions, and the last {{/home}}table specifies flags"
" that can be included in the regular ";
regex = [NSRegularExpression regularExpressionWithPattern:
@"\\{\\{demo\\}\\}"
"(.*)?"
"\\{\\{(//|/demo)\\}\\}"
options:NSRegularExpressionDotMatchesLineSeparators
error:&error];
// regex = [NSRegularExpression regularExpressionWithPattern:
// @"\\{\\{.*\\}\\}"
// "(.*)?"
// "\\{\\{(//|/.*)\\}\\}"
// options:NSRegularExpressionDotMatchesLineSeparators
// error:&error];
matches = [regex matchesInString:string
options:NSRegularExpressionDotMatchesLineSeparators
range:NSMakeRange(0, [string length])];
for (NSTextCheckingResult* match in matches)
{
NSLog(@"### %@ ###", [string substringWithRange:[match range]]);
}
感谢您的帮助,我不知道/发现群体的概念。除了我为多个用户做了一些修改之外,它运行良好:@“\\ {\\ {([^ /] *?)\\} \\}” “。*?” (这是变化) “\\ {\\ {((/ \\ 1)|(//))\\} \\}” –
它的工作方式就像一个魅力,谢谢 –