ios/Timi/Class/Base/Category/String/NSString+Utils.m

//
//  NSString+Utils.m
//  MIT_Endorsement
//
//  Created by 翟玉磊 on 2018/1/30.
//  Copyright © 2018年 翟玉磊. All rights reserved.
//

#import "NSString+Utils.h"

@implementation NSString (Utils)

/**
 *  截取URL中的参数
 *
 *  @return NSMutableDictionary parameters
 */
- (NSMutableDictionary *)getURLParameters {
    
    // 查找参数
    NSRange range = [self rangeOfString:@"?"];
    if (range.location == NSNotFound) {
        return nil;
    }
    
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    
    // 截取参数
    NSString *parametersString = [self substringFromIndex:range.location + 1];
    
    // 判断参数是单个参数还是多个参数
    if ([parametersString containsString:@"&"]) {
        
        // 多个参数，分割参数
        NSArray *urlComponents = [parametersString componentsSeparatedByString:@"&"];
        
        for (NSString *keyValuePair in urlComponents) {
            // 生成Key/Value
            NSArray *pairComponents = [keyValuePair componentsSeparatedByString:@"="];
            NSString *key = [pairComponents.firstObject stringByRemovingPercentEncoding];
            NSString *value = [pairComponents.lastObject stringByRemovingPercentEncoding];
            
            // Key不能为nil
            if (key == nil || value == nil) {
                continue;
            }
            
            id existValue = [params valueForKey:key];
            
            if (existValue != nil) {
                
                // 已存在的值，生成数组
                if ([existValue isKindOfClass:[NSArray class]]) {
                    // 已存在的值生成数组
                    NSMutableArray *items = [NSMutableArray arrayWithArray:existValue];
                    [items addObject:value];
                    
                    [params setValue:items forKey:key];
                } else {
                    
                    // 非数组
                    [params setValue:@[existValue, value] forKey:key];
                }
                
            } else {
                
                // 设置值
                [params setValue:value forKey:key];
            }
        }
    } else {
        // 单个参数
        
        // 生成Key/Value
        NSArray *pairComponents = [parametersString componentsSeparatedByString:@"="];
        
        // 只有一个参数，没有值
        if (pairComponents.count == 1) {
            return nil;
        }
        
        // 分隔值
        NSString *key = [pairComponents.firstObject stringByRemovingPercentEncoding];
        NSString *value = [pairComponents.lastObject stringByRemovingPercentEncoding];
        
        // Key不能为nil
        if (key == nil || value == nil) {
            return nil;
        }
        
        // 设置值
        [params setValue:value forKey:key];
    }
    
    return params;
}

/**
 获取缓存路径
 
 @return 将当前字符串拼接到cache目录后面
 */
- (NSString *)cacheDic
{
    NSString *path = [NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    
    return [path stringByAppendingPathComponent:self.lastPathComponent];
}

/**
 获取document路径
 
 @return 将当前字符串拼接到document目录后面
 */
- (NSString *)docDic
{
    NSString *path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
    
    return [path stringByAppendingPathComponent:self.lastPathComponent];
}

/**
 获取tmp路径
 
 @return 将当前字符串拼接到tmp目录后面
 */
- (NSString *)tmpDic
{
    NSString *path = NSTemporaryDirectory();
    
    return [path stringByAppendingPathComponent:self.lastPathComponent];
}

/// 检测字符串是否包含中文
+( BOOL)yl_isContainChinese:(NSString *)str
{
    for(int i=0; i< [str length];i++)
    {
        int a = [str characterAtIndex:i];
        if( a > 0x4e00 && a < 0x9fff)
        {
            return YES;
        }
    }
    return NO;
}

/// 整形
+ (BOOL)yl_isPureInt:(NSString *)string{
    NSScanner* scan = [NSScanner scannerWithString:string];
    int val;
    return [scan scanInt:&val] && [scan isAtEnd];
}

/// 浮点型
+ (BOOL)yl_isPureFloat:(NSString *)string{
    NSScanner* scan = [NSScanner scannerWithString:string];
    float val;
    return [scan scanFloat:&val] && [scan isAtEnd];
}

/// 有效的手机号码
+ (BOOL)yl_isValidMobile:(NSString *)str
{
    NSString *phoneRegex = @"^1[34578]\\d{9}$";
    NSPredicate *phoneTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",phoneRegex];
    return [phoneTest evaluateWithObject:str];
}

/// 纯数字
+ (BOOL)yl_isPureDigitCharacters:(NSString *)string
{
    string = [string stringByTrimmingCharactersInSet:[NSCharacterSet decimalDigitCharacterSet]];
    if(string.length > 0) return NO;
    
    return YES;
}

/// 字符串为字母或者数字
+ (BOOL)yl_isValidCharacterOrNumber:(NSString *)str
{
    // 编写正则表达式：只能是数字或英文，或两者都存在
    NSString *regex = @"^[a-z0－9A-Z]*$";
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
    return [predicate evaluateWithObject:str];
}

@end