1v1_7/MSYOUPAI/3rd/Category/NSString+Extension.m

//
//  NSString+Extension.m
//  HuaKaiChat
//
//  Created by BigBiao on 2017/8/24.
//  Copyright © 2017年 huakai. All rights reserved.
//

#import "NSString+Extension.h"
#import "CommonCrypto/CommonDigest.h"
@implementation NSString (Extension)
//md5加密
- (NSString *)md5{
    //    NSString * low=[self lowercaseString];
    const char *cStr = [self UTF8String];
    unsigned char result[CC_MD5_DIGEST_LENGTH];
    CC_MD5(cStr, strlen(cStr), result);
    return [[NSString stringWithFormat:@"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
             result[0], result[1], result[2], result[3],
             result[4], result[5], result[6], result[7],
             result[8], result[9], result[10], result[11],
             result[12], result[13], result[14], result[15]
             ] lowercaseString];
}
- (NSUInteger)fileSize
{
    // 文件管理者
    NSFileManager *mgr = [NSFileManager defaultManager];
    // 是否为文件夹
    BOOL isDirectory = NO;
    // 这个路径是否存在
    BOOL exists = [mgr fileExistsAtPath:self isDirectory:&isDirectory];
    // 路径不存在
    if (exists == NO) return 0;
    // 总大小
    NSUInteger totalSize = 0;
    if (isDirectory) { // 文件夹
        
        // 获得文件夹中的所有内容
        NSError *error = nil;
        NSDirectoryEnumerator *enumerator = [mgr enumeratorAtPath:self];
        for (NSString *subpath in enumerator) {
            // 获得全路径
            NSString *fullSubpath = [self stringByAppendingPathComponent:subpath];
            // 获得文件属性
            NSDictionary *attr = [mgr attributesOfItemAtPath:fullSubpath error:&error];
            unsigned long long size = (error ? 0:[attr fileSize]);
            totalSize += size;
        }
    } else { // 文件
        totalSize = [mgr attributesOfItemAtPath:self error:nil].fileSize;
    }
    return totalSize;
}
+(NSString *)dateToOld:(NSString  *)birth{
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
    [dateFormatter setDateFormat:@"yyyy-MM-dd"];
    NSDate *birthDay = [dateFormatter dateFromString:birth];
   
    //获得当前系统时间
    NSDate *currentDate = [NSDate date];
    //获得当前系统时间与出生日期之间的时间间隔
    NSTimeInterval time = [currentDate timeIntervalSinceDate:birthDay];
    //时间间隔以秒作为单位,求年的话除以60*60*24*356
    int age = ((int)time)/(3600*24*365);
    return [NSString stringWithFormat:@"%d",age];
}
- (CGFloat)heightWithFont:(UIFont *)font padding:(CGFloat)padding constrainedToWidth:(CGFloat)width{
    UIFont *textFont = font ? font : [UIFont systemFontOfSize:[UIFont systemFontSize]];
    
    CGSize textSize;
    NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
    paragraph.lineBreakMode = NSLineBreakByWordWrapping;
    paragraph.lineSpacing = padding;
    NSDictionary *attributes = @{NSFontAttributeName: textFont,
                                 NSParagraphStyleAttributeName: paragraph};
    textSize = [self boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
                                  options:(NSStringDrawingUsesLineFragmentOrigin |
                                           NSStringDrawingTruncatesLastVisibleLine)
                               attributes:attributes
                                  context:nil].size;
    
    return ceil(textSize.height);
}
/**
 *  @brief 计算文字的高度
 *
 *  @param font  字体(默认为系统字体)
 *  @param width 约束宽度
 */
- (CGFloat)heightWithFont:(UIFont *)font constrainedToWidth:(CGFloat)width
{
    UIFont *textFont = font ? font : [UIFont systemFontOfSize:[UIFont systemFontSize]];
    
    CGSize textSize;
    
#if __IPHONE_OS_VERSION_MIN_REQUIRED < 70000
    if ([self respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)]) {
        NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
        paragraph.lineBreakMode = NSLineBreakByWordWrapping;
        NSDictionary *attributes = @{NSFontAttributeName: textFont,
                                     NSParagraphStyleAttributeName: paragraph};
        textSize = [self boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
                                      options:(NSStringDrawingUsesLineFragmentOrigin |
                                               NSStringDrawingTruncatesLastVisibleLine)
                                   attributes:attributes
                                      context:nil].size;
    } else {
        textSize = [self sizeWithFont:textFont
                    constrainedToSize:CGSizeMake(width, CGFLOAT_MAX)
                        lineBreakMode:NSLineBreakByWordWrapping];
    }
#else
    NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
    paragraph.lineBreakMode = NSLineBreakByWordWrapping;
    NSDictionary *attributes = @{NSFontAttributeName: textFont,
                                 NSParagraphStyleAttributeName: paragraph};
    textSize = [self boundingRectWithSize:CGSizeMake(width, CGFLOAT_MAX)
                                  options:(NSStringDrawingUsesLineFragmentOrigin |
                                           NSStringDrawingTruncatesLastVisibleLine)
                               attributes:attributes
                                  context:nil].size;
#endif
    
    return ceil(textSize.height);
}

/**
 *  @brief 计算文字的宽度
 *
 *  @param font   字体(默认为系统字体)
 *  @param height 约束高度
 */
- (CGFloat)widthWithFont:(UIFont *)font constrainedToHeight:(CGFloat)height
{
    UIFont *textFont = font ? font : [UIFont systemFontOfSize:[UIFont systemFontSize]];
    
    CGSize textSize;
    
#if __IPHONE_OS_VERSION_MIN_REQUIRED < 70000
    if ([self respondsToSelector:@selector(boundingRectWithSize:options:attributes:context:)]) {
        NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
        paragraph.lineBreakMode = NSLineBreakByWordWrapping;
        NSDictionary *attributes = @{NSFontAttributeName: textFont,
                                     NSParagraphStyleAttributeName: paragraph};
        textSize = [self boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, height)
                                      options:(NSStringDrawingUsesLineFragmentOrigin |
                                               NSStringDrawingTruncatesLastVisibleLine)
                                   attributes:attributes
                                      context:nil].size;
    } else {
        textSize = [self sizeWithFont:textFont
                    constrainedToSize:CGSizeMake(CGFLOAT_MAX, height)
                        lineBreakMode:NSLineBreakByWordWrapping];
    }
#else
    NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
    paragraph.lineBreakMode = NSLineBreakByWordWrapping;
    NSDictionary *attributes = @{NSFontAttributeName: textFont,
                                 NSParagraphStyleAttributeName: paragraph};
    textSize = [self boundingRectWithSize:CGSizeMake(CGFLOAT_MAX, height)
                                  options:(NSStringDrawingUsesLineFragmentOrigin |
                                           NSStringDrawingTruncatesLastVisibleLine)
                               attributes:attributes
                                  context:nil].size;
#endif
    
    return ceil(textSize.width);
}

- (NSString *)pinYin{

    if (self.length==0) {
        return @"#";
    }
    if (isalpha([self characterAtIndex:0])) {
        return [[NSString stringWithFormat:@"%c",[self characterAtIndex:0]] uppercaseString];
    }
    return [[NSString stringWithFormat:@"%c",pinyinFirstLetter([self characterAtIndex:0])]uppercaseString];
}

- (NSString*)fullPinyin{
    if ([self length] == 0)
    {
        return @"";
    }
    NSMutableString *mutableString = [NSMutableString stringWithString:self];
    CFStringTransform((CFMutableStringRef)mutableString, NULL, kCFStringTransformToLatin, false);
    mutableString = (NSMutableString *)[mutableString stringByFoldingWithOptions:NSDiacriticInsensitiveSearch locale:[NSLocale currentLocale]];
    return [[mutableString uppercaseString] stringByReplacingOccurrencesOfString:@"'" withString:@""];
}

@end