/**
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* Tencent is pleased to support the open source community by making QMUI_iOS available.
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* Copyright (C) 2016-2021 THL A29 Limited, a Tencent company. All rights reserved.
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* Licensed under the MIT License (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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* http://opensource.org/licenses/MIT
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* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
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*/
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//
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// QMUIRuntime.m
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// QMUIKit
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//
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// Created by QMUI Team on 2018/9/5.
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//
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#import "QMUIRuntime.h"
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#import "QMUICommonDefines.h"
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#import "QMUIHelper.h"
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#include <mach-o/getsect.h>
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#include <mach-o/dyld.h>
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@implementation QMUIPropertyDescriptor
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+ (instancetype)descriptorWithProperty:(objc_property_t)property {
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QMUIPropertyDescriptor *descriptor = [[self alloc] init];
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NSString *propertyName = [NSString stringWithUTF8String:property_getName(property)];
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descriptor.name = propertyName;
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// getter
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char *getterChar = property_copyAttributeValue(property, "G");
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descriptor.getter = NSSelectorFromString(getterChar != NULL ? [NSString stringWithUTF8String:getterChar] : propertyName);
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if (getterChar != NULL) {
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free(getterChar);
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}
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// setter
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char *setterChar = property_copyAttributeValue(property, "S");
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NSString *setterString = setterChar != NULL ? [NSString stringWithUTF8String:setterChar] : NSStringFromSelector(setterWithGetter(NSSelectorFromString(propertyName)));
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descriptor.setter = NSSelectorFromString(setterString);
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if (setterChar != NULL) {
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free(setterChar);
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}
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// atomic/nonatomic
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char *attrValue_N = property_copyAttributeValue(property, "N");
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BOOL isAtomic = (attrValue_N == NULL);
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descriptor.isAtomic = isAtomic;
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descriptor.isNonatomic = !isAtomic;
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if (attrValue_N != NULL) {
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free(attrValue_N);
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}
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// assign/weak/strong/copy
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char *attrValue_isCopy = property_copyAttributeValue(property, "C");
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char *attrValue_isStrong = property_copyAttributeValue(property, "&");
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char *attrValue_isWeak = property_copyAttributeValue(property, "W");
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BOOL isCopy = attrValue_isCopy != NULL;
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BOOL isStrong = attrValue_isStrong != NULL;
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BOOL isWeak = attrValue_isWeak != NULL;
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if (attrValue_isCopy != NULL) {
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free(attrValue_isCopy);
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}
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if (attrValue_isStrong != NULL) {
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free(attrValue_isStrong);
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}
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if (attrValue_isWeak != NULL) {
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free(attrValue_isWeak);
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}
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descriptor.isCopy = isCopy;
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descriptor.isStrong = isStrong;
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descriptor.isWeak = isWeak;
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descriptor.isAssign = !isCopy && !isStrong && !isWeak;
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// readonly/readwrite
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char *attrValue_isReadonly = property_copyAttributeValue(property, "R");
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BOOL isReadonly = (attrValue_isReadonly != NULL);
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if (attrValue_isReadonly != NULL) {
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free(attrValue_isReadonly);
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}
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descriptor.isReadonly = isReadonly;
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descriptor.isReadwrite = !isReadonly;
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// type
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char *type = property_copyAttributeValue(property, "T");
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descriptor.type = [QMUIPropertyDescriptor typeWithEncodeString:[NSString stringWithUTF8String:type]];
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if (type != NULL) {
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free(type);
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}
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return descriptor;
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}
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- (NSString *)description {
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NSMutableString *result = [[NSMutableString alloc] init];
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[result appendString:@"@property("];
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if (self.isNonatomic) [result appendString:@"nonatomic, "];
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[result appendString:self.isAssign ? @"assign" : (self.isWeak ? @"weak" : (self.isStrong ? @"strong" : @"copy"))];
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if (self.isReadonly) [result appendString:@", readonly"];
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if (![NSStringFromSelector(self.getter) isEqualToString:self.name]) [result appendFormat:@", getter=%@", NSStringFromSelector(self.getter)];
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if (self.setter != setterWithGetter(NSSelectorFromString(self.name))) [result appendFormat:@", setter=%@", NSStringFromSelector(self.setter)];
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[result appendString:@") "];
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[result appendString:self.type];
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[result appendString:@" "];
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[result appendString:self.name];
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[result appendString:@";"];
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return result.copy;
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}
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#define _DetectTypeAndReturn(_type) if (strncmp(@encode(_type), typeEncoding, strlen(@encode(_type))) == 0) return @#_type;
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+ (NSString *)typeWithEncodeString:(NSString *)encodeString {
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if ([encodeString containsString:@"@\""]) {
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NSString *result = [encodeString substringWithRange:NSMakeRange(2, encodeString.length - 2 - 1)];
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if ([result containsString:@"<"] && [result containsString:@">"]) {
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// protocol
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if ([result hasPrefix:@"<"]) {
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// id pointer
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return [NSString stringWithFormat:@"id%@", result];
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}
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}
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// class
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return [NSString stringWithFormat:@"%@ *", result];
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}
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const char *typeEncoding = encodeString.UTF8String;
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_DetectTypeAndReturn(NSInteger)
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_DetectTypeAndReturn(NSUInteger)
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_DetectTypeAndReturn(int)
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_DetectTypeAndReturn(short)
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_DetectTypeAndReturn(long)
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_DetectTypeAndReturn(long long)
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_DetectTypeAndReturn(char)
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_DetectTypeAndReturn(unsigned char)
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_DetectTypeAndReturn(unsigned int)
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_DetectTypeAndReturn(unsigned short)
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_DetectTypeAndReturn(unsigned long)
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_DetectTypeAndReturn(unsigned long long)
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_DetectTypeAndReturn(CGFloat)
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_DetectTypeAndReturn(float)
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_DetectTypeAndReturn(double)
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_DetectTypeAndReturn(void)
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_DetectTypeAndReturn(char *)
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_DetectTypeAndReturn(id)
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_DetectTypeAndReturn(Class)
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_DetectTypeAndReturn(SEL)
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_DetectTypeAndReturn(BOOL)
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return encodeString;
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}
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@end
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#ifndef __LP64__
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typedef struct mach_header headerType;
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#else
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typedef struct mach_header_64 headerType;
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#endif
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static BOOL strendswith(const char *str, const char *suffix) {
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if (!str || !suffix) return NO;
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size_t lenstr = strlen(str);
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size_t lensuffix = strlen(suffix);
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if (lensuffix > lenstr) return NO;
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return strncmp(str + lenstr - lensuffix, suffix, lensuffix) == 0;
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}
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static const headerType *getProjectImageHeader() {
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const uint32_t imageCount = _dyld_image_count();
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NSString *executablePath = NSBundle.mainBundle.executablePath;
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if (!executablePath) return nil;
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const headerType *target_image_header = 0;
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for (uint32_t i = 0; i < imageCount; i++) {
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const char *image_name = _dyld_get_image_name(i);// name 是一串完整的文件路径，以 image 名结尾
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NSString *imagePath = [NSString stringWithUTF8String:image_name];
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if ([imagePath isEqualToString:executablePath]) {
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target_image_header = (headerType *)_dyld_get_image_header(i);
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break;
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}
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}
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return target_image_header;
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}
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// from https://github.com/opensource-apple/objc4/blob/master/runtime/objc-file.mm
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static classref_t *getDataSection(const headerType *machHeader, const char *sectname, size_t *outCount) {
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if (!machHeader) return nil;
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unsigned long byteCount = 0;
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classref_t *data = (classref_t *)getsectiondata(machHeader, "__DATA", sectname, &byteCount);
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if (!data) {
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data = (classref_t *)getsectiondata(machHeader, "__DATA_CONST", sectname, &byteCount);
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}
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if (!data) {
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data = (classref_t *)getsectiondata(machHeader, "__DATA_DIRTY", sectname, &byteCount);
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}
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if (outCount) *outCount = byteCount / sizeof(classref_t);
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return data;
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}
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int qmui_getProjectClassList(classref_t **classes) {
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size_t count = 0;
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if (!!classes) {
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*classes = getDataSection(getProjectImageHeader(), "__objc_classlist", &count);
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} else {
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getDataSection(getProjectImageHeader(), "__objc_classlist", &count);
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}
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return (int)count;
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}
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BOOL qmui_exists_dyld_image(const char *target_image_name) {
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const uint32_t imageCount = _dyld_image_count();
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for (uint32_t i = 0; i < imageCount; i++) {
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const char *image_name = _dyld_get_image_name(i);
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if (strendswith(image_name, target_image_name)) {
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return true;
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}
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}
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return false;
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}
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