[英]Replace string in between occurrences
I have a string I want to display inside the uiwebview that may look like this: 我有一个要显示在uiwebview中的字符串,该字符串可能看起来像这样:
"blah blah blah [IMG]you.png[/IMG] blah blah [IMG]me.png[/IMG]"
I want it replaced like this: 我希望将其替换为:
"blah blah blah <img src=\"you.png\"> blah blah <img src=\"me.png\">"
I can already get the string between the [IMG]...[/IMG] the problem is that it can only get the first set of [IMG]...[/IMG] and the rest of the occurrence cannot. 我已经可以在[IMG] ... [/ IMG]之间获取字符串了,问题是它只能获取第一组[IMG] ... [/ IMG],而其余的则不能。
NSRange startRange = [finalQuestionString rangeOfString:@"[IMG]"];
if (startRange.location != NSNotFound) {
NSRange targetRange;
targetRange.location = startRange.location + startRange.length;
targetRange.length = [finalQuestionString length] - targetRange.location;
NSRange endRange = [finalQuestionString rangeOfString:@"[/IMG]" options:0
range:targetRange];
if (endRange.location != NSNotFound) {
targetRange.length = endRange.location - targetRange.location;
NSString *imageFile = [finalQuestionString
substringWithRange:targetRange];//the extracted filename
}
}
so how can I get all the occurrences of [IMG]...[/IMG] and replace it with 所以我怎样才能得到所有出现的[IMG] ... [/ IMG]并将其替换为
"<img src=\"file.png\">"
any help would be appreciated. 任何帮助,将不胜感激。 Thanks!
谢谢!
Since [IMG]
will always become <img src=\\"
and [/IMG]
will always become \\">"
, why not do something like this: 由于
[IMG]
将始终变为<img src=\\"
而[/IMG]
将始终变为\\">"
,为什么不这样做:
NSString *originalString = @"blah blah blah [IMG]you.png[/IMG] blah blah [IMG]me.png[/IMG]";
NSString *tempString = [originalString stringByReplacingOccurrencesOfString:@"[IMG]" withString:@"<img src=\""];
NSString *finalString = [tempString stringByReplacingOccurrencesOfString:@"\"[/IMG]" withString:@"\'>'"];
Memory management is left as an exercise for the reader :) 内存管理留给读者练习:)
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