找了些资料, 自己整理了一下, 代码如下:
#import <Foundation/Foundation.h>
@interface NSArray (Foundation_Log)
@end
#import "NSArray+Foundation_Log.h"
#import <objc/runtime.h>
#import <objc/message.h>
@implementation NSArray (Foundation_Log)
#if DEBUG
- (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level {
NSMutableString *desc = [NSMutableString string];
NSMutableString *tabString = [[NSMutableString alloc] initWithCapacity:level];
for (NSUInteger i = 0; i < level; ++i) {
[tabString appendString:@"\t"];
}
NSString *tab = @"";
if (level > 0) {
tab = tabString;
}
[desc appendString:@"\t(\n"];
for (id obj in self) {
if (![obj respondsToSelector:@selector(description)]) {
continue;
}
if ([obj isKindOfClass:[NSDictionary class]]
|| [obj isKindOfClass:[NSArray class]]
|| [obj isKindOfClass:[NSSet class]]) {
NSString *str = [((NSDictionary *)obj) descriptionWithLocale:locale indent:level + 1];
[desc appendFormat:@"%@\t%@,\n", tab, str];
} else if ([obj isKindOfClass:[NSString class]]) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, obj];
} else if ([obj isKindOfClass:[NSData class]]) {
// 如果是NSData类型，尝试去解析结果，以打印出可阅读的数据
NSError *error = nil;
NSObject *result = [NSJSONSerialization JSONObjectWithData:obj
options:NSJSONReadingMutableContainers
error:&error];
// 解析成功
if (error == nil && result != nil) {
if ([result isKindOfClass:[NSDictionary class]]
|| [result isKindOfClass:[NSArray class]]
|| [result isKindOfClass:[NSSet class]]) {
NSString *str = [((NSDictionary *)result) descriptionWithLocale:locale indent:level + 1];
[desc appendFormat:@"%@\t%@,\n", tab, str];
} else if ([obj isKindOfClass:[NSString class]]) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, result];
}
} else {
@try {
NSString *str = [[NSString alloc] initWithData:obj encoding:NSUTF8StringEncoding];
if (str != nil) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, str];
} else {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
}
}
@catch (NSException *exception) {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
}
}
} else {
@try {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
} @catch (NSException *exception) {
} @finally {
}
}
}
[desc appendFormat:@"%@)", tab];
return desc;
}
#endif
@end
@implementation NSDictionary (Foundation_Log)
#if DEBUG
- (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level {
NSMutableString *desc = [NSMutableString string];
NSMutableString *tabString = [[NSMutableString alloc] initWithCapacity:level];
for (NSUInteger i = 0; i < level; ++i) {
[tabString appendString:@"\t"];
}
NSString *tab = @"";
if (level > 0) {
tab = tabString;
}
[desc appendString:@"\t{\n"];
// 遍历数组,self就是当前的数组
for (id key in self.allKeys) {
id obj = [self objectForKey:key];
if (![obj respondsToSelector:@selector(description)]) {
continue;
}
if ([obj isKindOfClass:[NSString class]]) {
[desc appendFormat:@"%@\t%@ = \"%@\",\n", tab, key, obj];
} else if ([obj isKindOfClass:[NSArray class]]
|| [obj isKindOfClass:[NSDictionary class]]
|| [obj isKindOfClass:[NSSet class]]) {
[desc appendFormat:@"%@\t%@ = %@,\n", tab, key, [obj descriptionWithLocale:locale indent:level + 1]];
} else if ([obj isKindOfClass:[NSData class]]) {
// 如果是NSData类型，尝试去解析结果，以打印出可阅读的数据
NSError *error = nil;
NSObject *result = [NSJSONSerialization JSONObjectWithData:obj
options:NSJSONReadingMutableContainers
error:&error];
// 解析成功
if (error == nil && result != nil) {
if ([result isKindOfClass:[NSDictionary class]]
|| [result isKindOfClass:[NSArray class]]
|| [result isKindOfClass:[NSSet class]]) {
NSString *str = [((NSDictionary *)result) descriptionWithLocale:locale indent:level + 1];
[desc appendFormat:@"%@\t%@ = %@,\n", tab, key, str];
} else if ([obj isKindOfClass:[NSString class]]) {
[desc appendFormat:@"%@\t%@ = \"%@\",\n", tab, key, result];
}
} else {
@try {
NSString *str = [[NSString alloc] initWithData:obj encoding:NSUTF8StringEncoding];
if (str != nil) {
[desc appendFormat:@"%@\t%@ = \"%@\",\n", tab, key, str];
} else {
[desc appendFormat:@"%@\t%@ = %@,\n", tab, key, obj];
}
}
@catch (NSException *exception) {
[desc appendFormat:@"%@\t%@ = %@,\n", tab, key, obj];
}
}
} else {
@try {
[desc appendFormat:@"%@\t%@ = %@,\n", tab, key, obj];
} @catch (NSException *exception) {
} @finally {
}
}
}
[desc appendFormat:@"%@}", tab];
return desc;
}
#endif
@end
@implementation NSSet (Foundation_Log)
#if DEBUG
- (NSString *)descriptionWithLocale:(id)locale indent:(NSUInteger)level {
NSMutableString *desc = [NSMutableString string];
NSMutableString *tabString = [[NSMutableString alloc] initWithCapacity:level];
for (NSUInteger i = 0; i < level; ++i) {
[tabString appendString:@"\t"];
}
NSString *tab = @"\t";
if (level > 0) {
tab = tabString;
}
[desc appendString:@"\t{(\n"];
for (id obj in self) {
if (![obj respondsToSelector:@selector(description)]) {
continue;
}
if ([obj isKindOfClass:[NSDictionary class]]
|| [obj isKindOfClass:[NSArray class]]
|| [obj isKindOfClass:[NSSet class]]) {
NSString *str = [((NSDictionary *)obj) descriptionWithLocale:locale indent:level + 1];
[desc appendFormat:@"%@\t%@,\n", tab, str];
} else if ([obj isKindOfClass:[NSString class]]) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, obj];
} else if ([obj isKindOfClass:[NSData class]]) {
// 如果是NSData类型，尝试去解析结果，以打印出可阅读的数据
NSError *error = nil;
NSObject *result = [NSJSONSerialization JSONObjectWithData:obj
options:NSJSONReadingMutableContainers
error:&error];
// 解析成功
if (error == nil && result != nil) {
if ([result isKindOfClass:[NSDictionary class]]
|| [result isKindOfClass:[NSArray class]]
|| [result isKindOfClass:[NSSet class]]) {
NSString *str = [((NSDictionary *)result) descriptionWithLocale:locale indent:level + 1];
[desc appendFormat:@"%@\t%@,\n", tab, str];
} else if ([obj isKindOfClass:[NSString class]]) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, result];
}
} else {
@try {
NSString *str = [[NSString alloc] initWithData:obj encoding:NSUTF8StringEncoding];
if (str != nil) {
[desc appendFormat:@"%@\t\"%@\",\n", tab, str];
} else {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
}
}
@catch (NSException *exception) {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
}
}
} else {
@try {
[desc appendFormat:@"%@\t%@,\n", tab, obj];
} @catch (NSException *exception) {
} @finally {
}
}
}
[desc appendFormat:@"%@)}", tab];
return desc;
}
#endif
@end
@implementation NSObject (Foundation_Log)
- (NSString *)description {
NSMutableDictionary *debugInfos = [NSMutableDictionary dictionary];
unsigned int count = 0;
Ivar *ivars = class_copyIvarList(self.class, &count);
for (unsigned int i = 0; i < count; ++i) {
Ivar ivar = ivars[i];
const char *name = ivar_getName(ivar);
NSString *ivarName = [NSString stringWithUTF8String:name];
NSString *propertyName = ivarName;
if ([propertyName hasPrefix:@"_"]) {
propertyName = [propertyName substringFromIndex:1];
}
const char *type = ivar_getTypeEncoding(ivar);
NSString *typeEncoding = [NSString stringWithUTF8String:type];
id value = nil;
// object
if ([typeEncoding rangeOfString:@"@"].location != NSNotFound) {
value = ((id (*)(id, SEL))objc_msgSend)((id)self, NSSelectorFromString(propertyName));
} else if ([typeEncoding rangeOfString:@"*"].location != NSNotFound) {
char *v = ((char * (*)(id, SEL))objc_msgSend)((id)self, NSSelectorFromString(propertyName));
value = [NSString stringWithUTF8String:v];
} else if ([typeEncoding rangeOfString:@"#"].location != NSNotFound) {
value = propertyName;
} else if ([typeEncoding rangeOfString:@"^"].location != NSNotFound) {
value = @"基本C指针";
} else {
@try {
value = [self valueForKey:propertyName];
}
@catch (NSException *exception) {
}
@finally {
}
}
value = value == nil ? @"<nil>" : value;
[debugInfos setValue:value forKey:propertyName];
}
free(ivars);
return debugInfos.description;
}
- (NSString *)debugDescription {
NSMutableDictionary *debugInfos = [NSMutableDictionary dictionary];
unsigned int count = 0;
Ivar *ivars = class_copyIvarList(self.class, &count);
for (unsigned int i = 0; i < count; ++i) {
Ivar ivar = ivars[i];
const char *name = ivar_getName(ivar);
NSString *ivarName = [NSString stringWithUTF8String:name];
}
free(ivars);
return debugInfos.debugDescription;
}
@end