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‎_posts/2017-03-01-Xcode-控制台输出中文.md

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---
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layout: post
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title: Xcode 控制台输出中文
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subtitle: 在 Xcode 控制台输出中文的方法
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date: 2017-03-01
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author: BY
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header-img: img/post-bg-cook.jpg
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catalog: true
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tags:
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- iOS
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- Xcode
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- macOS
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---
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> 重写 Array、Set、Dictionary 的输出方法，实现在中文（Unicode）字符在控制台的输出
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## 原理
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Xcode 控制台中在输出 Array、Set、Dictionary 时，其中的中文字符会变成Unicode编码 如`"\U67cf\U8367"`，重写输出方法
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- (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level
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## 效果
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先看看效果：
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创建一个字典并输出:
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NSData *strData = [@"str -> data格式的字符串" dataUsingEncoding:NSUTF8StringEncoding];
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NSData *dicData = [NSJSONSerialization dataWithJSONObject:@{@"key0": @"字典 -> data 的数据",}
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options:NSJSONWritingPrettyPrinted
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error:nil];
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NSMutableSet *set = [NSMutableSet setWithArray:@[@"set0",
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strData,
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dicData]];
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NSDictionary *dic = @{@"name" : @"BY",
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@"My bolg" : @"http://qiubaiying.top",
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@"count" : @(11),
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@"strData" : strData,
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@"dicData" : dicData,
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@"set" : set,
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@"Unicode" : @"😀😁🤣😂😄",
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@"contact" : @[@"BY Blog:http://qiubaiying.top",
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@"GitHub:https://github.com/qiubaiying",
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@"简书:https://http://www.jianshu.com/u/e71990ada2fd"]};
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NSLog(@"%@", dic);
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输出结果：
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2017-03-01 10:36:45.709 BYFoundationLog_Demo[1657:53604] {
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"My bolg" = "http://qiubaiying.top";
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Unicode = "\Ud83d\Ude00\Ud83d\Ude01\Ud83e\Udd23\Ud83d\Ude02\Ud83d\Ude04";
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contact = (
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"BY Blog:http://qiubaiying.top",
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"GitHub:https://github.com/qiubaiying",
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"\U7b80\U4e66:https://http://www.jianshu.com/u/e71990ada2fd"
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);
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count = 11;
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dicData = <7b0a2020 226b6579 3022203a 2022e5ad 97e585b8 202d3e20 64617461 20e79a84 e695b0e6 8dae220a 7d>;
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name = BY;
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set = "{(\n <73747220 2d3e2064 617461e6 a0bce5bc 8fe79a84 e5ad97e7 aca6e4b8 b2>,\n set0,\n <7b0a2020 226b6579 3022203a 2022e5ad 97e585b8 202d3e20 64617461 20e79a84 e695b0e6 8dae220a 7d>\n)}";
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strData = <73747220 2d3e2064 617461e6 a0bce5bc 8fe79a84 e5ad97e7 aca6e4b8 b2>;
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}
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将`BYFoundationLog.m`拖入项目，再次运行
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2017-03-01 10:35:52.545 BYFoundationLog_Demo[1635:52772] {
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set = {(
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"str -> data格式的字符串",
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"set0",
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{
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key0 = "字典 -> data 的数据",
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},
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)},
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Unicode = "😀😁🤣😂😄",
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strData = "str -> data格式的字符串",
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count = 11,
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dicData = {
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key0 = "字典 -> data 的数据",
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},
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contact = (
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"BY Blog:http://qiubaiying.top",
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"GitHub:https://github.com/qiubaiying",
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"简书:https://http://www.jianshu.com/u/e71990ada2fd",
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),
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name = "BY",
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My bolg = "http://qiubaiying.top",
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}
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## 实现方法
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以 `NSArray` 为例：
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创建一个 `NSArray` 的分类，重写输出方法
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```
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@implementation NSArray (Log)
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- (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level {
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NSMutableString *desc = [NSMutableString string];
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NSMutableString *tabString = [[NSMutableString alloc] initWithCapacity:level];
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for (NSUInteger i = 0; i < level; ++i) {
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[tabString appendString:@"\t"];
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}
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NSString *tab = @"";
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if (level > 0) {
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tab = tabString;
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}
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[desc appendString:@"\t(\n"];
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for (id obj in self) {
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if ([obj isKindOfClass:[NSDictionary class]]
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|| [obj isKindOfClass:[NSArray class]]
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|| [obj isKindOfClass:[NSSet class]]) {
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NSString *str = [((NSDictionary *)obj) descriptionWithLocale:locale indent:level + 1];
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[desc appendFormat:@"%@\t%@,\n", tab, str];
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} else if ([obj isKindOfClass:[NSString class]]) {
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[desc appendFormat:@"%@\t\"%@\",\n", tab, obj];
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} else if ([obj isKindOfClass:[NSData class]]) {
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NSError *error = nil;
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NSObject *result = [NSJSONSerialization JSONObjectWithData:obj
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options:NSJSONReadingMutableContainers
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error:&error];
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if (error == nil && result != nil) {
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if ([result isKindOfClass:[NSDictionary class]]
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|| [result isKindOfClass:[NSArray class]]
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|| [result isKindOfClass:[NSSet class]]) {
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NSString *str = [((NSDictionary *)result) descriptionWithLocale:locale indent:level + 1];
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[desc appendFormat:@"%@\t%@,\n", tab, str];
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} else if ([obj isKindOfClass:[NSString class]]) {
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[desc appendFormat:@"%@\t\"%@\",\n", tab, result];
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}
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} else {
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@try {
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NSString *str = [[NSString alloc] initWithData:obj encoding:NSUTF8StringEncoding];
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if (str != nil) {
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[desc appendFormat:@"%@\t\"%@\",\n", tab, str];
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} else {
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[desc appendFormat:@"%@\t%@,\n", tab, obj];
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}
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}
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@catch (NSException *exception) {
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[desc appendFormat:@"%@\t%@,\n", tab, obj];
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}
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}
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} else {
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[desc appendFormat:@"%@\t%@,\n", tab, obj];
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}
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}
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[desc appendFormat:@"%@)", tab];
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return desc;
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}
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@end
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```
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NSSet、NSDictionary 与 NSArray 实现方法类似
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## 代码下载
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代码及Demo地址：[GitHub](https://github.com/qiubaiying/BYFoundationLog)
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## 使用方法
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直接将 `BYFoundationLog.m` 文件拖入项目中就能使用
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