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99 lines
3.5 KiB
99 lines
3.5 KiB
2 years ago
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// NSString+SelectString.m
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1 year ago
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// FireBoltt
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2 years ago
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//
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// Created by ecell on 2022/11/1.
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// Copyright © 2022 Sheldon. All rights reserved.
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//
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#import "NSString+SelectString.h"
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@implementation NSString (SelectString)
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- (NSString *)selcteStringWithSelectSatrt:(NSString *)startStr selecteEnd:(NSString *)endStr
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{
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NSString *startRegStr = [startStr stringByReplacingOccurrencesOfString:@"[" withString:@"\\["];//转义[
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NSString *endRegStr = [endStr stringByReplacingOccurrencesOfString:@"[" withString:@"\\["];//转义[
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NSString *regStr = [NSString stringWithFormat:@"%@.*?%@",startRegStr,endRegStr];//拼接正则字符
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if (endStr.length == 0 )
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{
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regStr = [NSString stringWithFormat:@"%@.*",startRegStr];
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}
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if (startStr.length == 0)
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{
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regStr = [NSString stringWithFormat:@".*?%@",endStr];
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}
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//正则方法截取字符串
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NSRange codeRange = [self rangeOfString:regStr options:NSRegularExpressionSearch];
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NSString *return_code;
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if (codeRange.location != NSNotFound)
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{
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return_code = [self substringWithRange:codeRange];
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if (startStr.length)
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{
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return_code = [return_code stringByReplacingOccurrencesOfString:startStr withString:@""];
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}
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if (endStr.length)
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{
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return_code = [return_code stringByReplacingOccurrencesOfString:endStr withString:@""];
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}
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}
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else
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{
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return_code = @"字符串截取失败";
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}
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return return_code;
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}
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+ (NSString *)replaceUnicode:(NSString *)unicodeStr
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{
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NSString *tempStr1 = [unicodeStr stringByReplacingOccurrencesOfString:@"\\u"withString:@"\\U"];
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NSString *tempStr2 = [tempStr1 stringByReplacingOccurrencesOfString:@"\""withString:@"\\\""];
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NSString *tempStr3 = [[@"\""stringByAppendingString:tempStr2] stringByAppendingString:@"\""];
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NSData *tempData = [tempStr3 dataUsingEncoding:NSUTF8StringEncoding];
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NSString* returnStr = [NSPropertyListSerialization propertyListFromData:tempData
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mutabilityOption:NSPropertyListImmutable
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format:NULL
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errorDescription:NULL];
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return [returnStr stringByReplacingOccurrencesOfString:@"\\r\\n"withString:@"\n"];
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}
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+(NSString *)utf8ToUnicode:(NSString *)string
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{
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NSUInteger length = [string length];
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NSMutableString *str = [NSMutableString stringWithCapacity:0];
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for (int i = 0;i < length; i++){
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NSMutableString *s = [NSMutableString stringWithCapacity:0];
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unichar _char = [string characterAtIndex:i];
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// 判断是否为英文和数字
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if (_char <= '9' && _char >='0'){
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[s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]];
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}else if(_char >='a' && _char <= 'z'){
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[s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]];
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}else if(_char >='A' && _char <= 'Z')
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{
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[s appendFormat:@"%@",[string substringWithRange:NSMakeRange(i,1)]];
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}else
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{
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// 中文和字符
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[s appendFormat:@"\\u%x",[string characterAtIndex:i]];
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// 不足位数补0 否则解码不成功
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if(s.length == 4)
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{
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[s insertString:@"00" atIndex:2];
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}
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else if (s.length == 5)
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{
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[s insertString:@"0" atIndex:2];
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}
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}
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[str appendFormat:@"%@", s];
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}
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return str;
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}
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@end
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