777 lines
24 KiB
Objective-C
777 lines
24 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTUtils.h"
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#import <mach/mach_time.h>
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#import <objc/message.h>
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#import <UIKit/UIKit.h>
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#import <CommonCrypto/CommonCrypto.h>
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#import <zlib.h>
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#import <dlfcn.h>
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#import "RCTLog.h"
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NSString *const RCTErrorUnspecified = @"EUNSPECIFIED";
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static NSString *__nullable _RCTJSONStringifyNoRetry(id __nullable jsonObject, NSError **error)
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{
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if (!jsonObject) {
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return nil;
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}
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static SEL JSONKitSelector = NULL;
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static NSSet<Class> *collectionTypes;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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SEL selector = NSSelectorFromString(@"JSONStringWithOptions:error:");
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if ([NSDictionary instancesRespondToSelector:selector]) {
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JSONKitSelector = selector;
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collectionTypes = [NSSet setWithObjects:
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[NSArray class], [NSMutableArray class],
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[NSDictionary class], [NSMutableDictionary class], nil];
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}
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});
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@try {
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// Use JSONKit if available and object is not a fragment
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if (JSONKitSelector && [collectionTypes containsObject:[jsonObject classForCoder]]) {
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return ((NSString *(*)(id, SEL, int, NSError **))objc_msgSend)(jsonObject, JSONKitSelector, 0, error);
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}
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// Use Foundation JSON method
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NSData *jsonData = [NSJSONSerialization
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dataWithJSONObject:jsonObject options:(NSJSONWritingOptions)NSJSONReadingAllowFragments
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error:error];
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return jsonData ? [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding] : nil;
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}
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@catch (NSException *exception) {
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// Convert exception to error
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if (error) {
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*error = [NSError errorWithDomain:RCTErrorDomain code:0 userInfo:@{
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NSLocalizedDescriptionKey: exception.description ?: @""
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}];
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}
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return nil;
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}
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}
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NSString *__nullable RCTJSONStringify(id __nullable jsonObject, NSError **error)
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{
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if (error) {
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return _RCTJSONStringifyNoRetry(jsonObject, error);
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} else {
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NSError *localError;
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NSString *json = _RCTJSONStringifyNoRetry(jsonObject, &localError);
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if (localError) {
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RCTLogError(@"RCTJSONStringify() encountered the following error: %@",
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localError.localizedDescription);
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// Sanitize the data, then retry. This is slow, but it prevents uncaught
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// data issues from crashing in production
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return _RCTJSONStringifyNoRetry(RCTJSONClean(jsonObject), NULL);
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}
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return json;
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}
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}
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static id __nullable _RCTJSONParse(NSString *__nullable jsonString, BOOL mutable, NSError **error)
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{
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static SEL JSONKitSelector = NULL;
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static SEL JSONKitMutableSelector = NULL;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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SEL selector = NSSelectorFromString(@"objectFromJSONStringWithParseOptions:error:");
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if ([NSString instancesRespondToSelector:selector]) {
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JSONKitSelector = selector;
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JSONKitMutableSelector = NSSelectorFromString(@"mutableObjectFromJSONStringWithParseOptions:error:");
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}
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});
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if (jsonString) {
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// Use JSONKit if available and string is not a fragment
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if (JSONKitSelector) {
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NSInteger length = jsonString.length;
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for (NSInteger i = 0; i < length; i++) {
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unichar c = [jsonString characterAtIndex:i];
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if (strchr("{[", c)) {
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static const int options = (1 << 2); // loose unicode
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SEL selector = mutable ? JSONKitMutableSelector : JSONKitSelector;
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return ((id (*)(id, SEL, int, NSError **))objc_msgSend)(jsonString, selector, options, error);
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}
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if (!strchr(" \r\n\t", c)) {
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break;
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}
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}
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}
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// Use Foundation JSON method
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NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
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if (!jsonData) {
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jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES];
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if (jsonData) {
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RCTLogWarn(@"RCTJSONParse received the following string, which could "
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"not be losslessly converted to UTF8 data: '%@'", jsonString);
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} else {
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NSString *errorMessage = @"RCTJSONParse received invalid UTF8 data";
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if (error) {
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*error = RCTErrorWithMessage(errorMessage);
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} else {
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RCTLogError(@"%@", errorMessage);
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}
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return nil;
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}
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}
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NSJSONReadingOptions options = NSJSONReadingAllowFragments;
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if (mutable) {
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options |= NSJSONReadingMutableContainers;
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}
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return [NSJSONSerialization JSONObjectWithData:jsonData
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options:options
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error:error];
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}
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return nil;
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}
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id __nullable RCTJSONParse(NSString *__nullable jsonString, NSError **error)
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{
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return _RCTJSONParse(jsonString, NO, error);
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}
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id __nullable RCTJSONParseMutable(NSString *__nullable jsonString, NSError **error)
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{
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return _RCTJSONParse(jsonString, YES, error);
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}
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id RCTJSONClean(id object)
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{
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static dispatch_once_t onceToken;
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static NSSet<Class> *validLeafTypes;
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dispatch_once(&onceToken, ^{
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validLeafTypes = [[NSSet alloc] initWithArray:@[
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[NSString class],
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[NSMutableString class],
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[NSNumber class],
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[NSNull class],
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]];
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});
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if ([validLeafTypes containsObject:[object classForCoder]]) {
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if ([object isKindOfClass:[NSNumber class]]) {
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return @(RCTZeroIfNaN([object doubleValue]));
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}
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if ([object isKindOfClass:[NSString class]]) {
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if ([object UTF8String] == NULL) {
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return (id)kCFNull;
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}
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}
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return object;
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}
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if ([object isKindOfClass:[NSDictionary class]]) {
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__block BOOL copy = NO;
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NSMutableDictionary<NSString *, id> *values = [[NSMutableDictionary alloc] initWithCapacity:[object count]];
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[object enumerateKeysAndObjectsUsingBlock:^(NSString *key, id item, __unused BOOL *stop) {
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id value = RCTJSONClean(item);
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values[key] = value;
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copy |= value != item;
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}];
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return copy ? values : object;
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}
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if ([object isKindOfClass:[NSArray class]]) {
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__block BOOL copy = NO;
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__block NSArray *values = object;
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[object enumerateObjectsUsingBlock:^(id item, NSUInteger idx, __unused BOOL *stop) {
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id value = RCTJSONClean(item);
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if (copy) {
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[(NSMutableArray *)values addObject:value];
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} else if (value != item) {
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// Converted value is different, so we'll need to copy the array
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values = [[NSMutableArray alloc] initWithCapacity:values.count];
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for (NSUInteger i = 0; i < idx; i++) {
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[(NSMutableArray *)values addObject:object[i]];
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}
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[(NSMutableArray *)values addObject:value];
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copy = YES;
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}
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}];
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return values;
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}
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return (id)kCFNull;
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}
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NSString *RCTMD5Hash(NSString *string)
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{
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const char *str = string.UTF8String;
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unsigned char result[CC_MD5_DIGEST_LENGTH];
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CC_MD5(str, (CC_LONG)strlen(str), result);
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return [NSString stringWithFormat:@"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
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result[0], result[1], result[2], result[3],
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result[4], result[5], result[6], result[7],
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result[8], result[9], result[10], result[11],
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result[12], result[13], result[14], result[15]
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];
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}
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void RCTExecuteOnMainThread(dispatch_block_t block, BOOL sync)
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{
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if ([NSThread isMainThread]) {
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block();
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} else if (sync) {
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dispatch_sync(dispatch_get_main_queue(), ^{
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block();
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});
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} else {
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dispatch_async(dispatch_get_main_queue(), ^{
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block();
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});
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}
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}
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CGFloat RCTScreenScale()
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{
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static CGFloat scale;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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RCTExecuteOnMainThread(^{
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scale = [UIScreen mainScreen].scale;
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}, YES);
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});
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return scale;
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}
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CGSize RCTScreenSize()
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{
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static CGSize size;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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RCTExecuteOnMainThread(^{
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size = [UIScreen mainScreen].bounds.size;
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}, YES);
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});
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return size;
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}
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CGFloat RCTRoundPixelValue(CGFloat value)
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{
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CGFloat scale = RCTScreenScale();
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return round(value * scale) / scale;
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}
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CGFloat RCTCeilPixelValue(CGFloat value)
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{
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CGFloat scale = RCTScreenScale();
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return ceil(value * scale) / scale;
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}
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CGFloat RCTFloorPixelValue(CGFloat value)
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{
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CGFloat scale = RCTScreenScale();
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return floor(value * scale) / scale;
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}
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CGSize RCTSizeInPixels(CGSize pointSize, CGFloat scale)
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{
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return (CGSize){
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ceil(pointSize.width * scale),
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ceil(pointSize.height * scale),
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};
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}
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void RCTSwapClassMethods(Class cls, SEL original, SEL replacement)
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{
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Method originalMethod = class_getClassMethod(cls, original);
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IMP originalImplementation = method_getImplementation(originalMethod);
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const char *originalArgTypes = method_getTypeEncoding(originalMethod);
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Method replacementMethod = class_getClassMethod(cls, replacement);
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IMP replacementImplementation = method_getImplementation(replacementMethod);
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const char *replacementArgTypes = method_getTypeEncoding(replacementMethod);
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if (class_addMethod(cls, original, replacementImplementation, replacementArgTypes)) {
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class_replaceMethod(cls, replacement, originalImplementation, originalArgTypes);
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} else {
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method_exchangeImplementations(originalMethod, replacementMethod);
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}
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}
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void RCTSwapInstanceMethods(Class cls, SEL original, SEL replacement)
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{
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Method originalMethod = class_getInstanceMethod(cls, original);
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IMP originalImplementation = method_getImplementation(originalMethod);
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const char *originalArgTypes = method_getTypeEncoding(originalMethod);
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Method replacementMethod = class_getInstanceMethod(cls, replacement);
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IMP replacementImplementation = method_getImplementation(replacementMethod);
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const char *replacementArgTypes = method_getTypeEncoding(replacementMethod);
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if (class_addMethod(cls, original, replacementImplementation, replacementArgTypes)) {
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class_replaceMethod(cls, replacement, originalImplementation, originalArgTypes);
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} else {
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method_exchangeImplementations(originalMethod, replacementMethod);
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}
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}
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BOOL RCTClassOverridesClassMethod(Class cls, SEL selector)
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{
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return RCTClassOverridesInstanceMethod(object_getClass(cls), selector);
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}
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BOOL RCTClassOverridesInstanceMethod(Class cls, SEL selector)
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{
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unsigned int numberOfMethods;
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Method *methods = class_copyMethodList(cls, &numberOfMethods);
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for (unsigned int i = 0; i < numberOfMethods; i++) {
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if (method_getName(methods[i]) == selector) {
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free(methods);
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return YES;
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}
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}
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free(methods);
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return NO;
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}
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NSDictionary<NSString *, id> *RCTMakeError(NSString *message,
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id __nullable toStringify,
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NSDictionary<NSString *, id> *__nullable extraData)
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{
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if (toStringify) {
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message = [message stringByAppendingString:[toStringify description]];
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}
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NSMutableDictionary<NSString *, id> *error = [extraData mutableCopy] ?: [NSMutableDictionary new];
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error[@"message"] = message;
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return error;
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}
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NSDictionary<NSString *, id> *RCTMakeAndLogError(NSString *message,
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id __nullable toStringify,
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NSDictionary<NSString *, id> *__nullable extraData)
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{
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NSDictionary<NSString *, id> *error = RCTMakeError(message, toStringify, extraData);
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RCTLogError(@"\nError: %@", error);
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return error;
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}
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NSDictionary<NSString *, id> *RCTJSErrorFromNSError(NSError *error)
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{
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NSString *codeWithDomain = [NSString stringWithFormat:@"E%@%zd", error.domain.uppercaseString, error.code];
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return RCTJSErrorFromCodeMessageAndNSError(codeWithDomain,
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error.localizedDescription,
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error);
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}
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// TODO: Can we just replace RCTMakeError with this function instead?
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NSDictionary<NSString *, id> *RCTJSErrorFromCodeMessageAndNSError(NSString *code,
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NSString *message,
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NSError *__nullable error)
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{
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NSString *errorMessage;
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NSArray<NSString *> *stackTrace = [NSThread callStackSymbols];
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NSMutableDictionary<NSString *, id> *errorInfo =
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[NSMutableDictionary dictionaryWithObject:stackTrace forKey:@"nativeStackIOS"];
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if (error) {
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errorMessage = error.localizedDescription ?: @"Unknown error from a native module";
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errorInfo[@"domain"] = error.domain ?: RCTErrorDomain;
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} else {
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errorMessage = @"Unknown error from a native module";
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errorInfo[@"domain"] = RCTErrorDomain;
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}
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errorInfo[@"code"] = code ?: RCTErrorUnspecified;
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// Allow for explicit overriding of the error message
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errorMessage = message ?: errorMessage;
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return RCTMakeError(errorMessage, nil, errorInfo);
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}
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BOOL RCTRunningInTestEnvironment(void)
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{
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static BOOL isTestEnvironment = NO;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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isTestEnvironment = NSClassFromString(@"SenTestCase") || NSClassFromString(@"XCTest");
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});
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return isTestEnvironment;
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}
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BOOL RCTRunningInAppExtension(void)
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{
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return [[[[NSBundle mainBundle] bundlePath] pathExtension] isEqualToString:@"appex"];
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}
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UIApplication *__nullable RCTSharedApplication(void)
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{
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if (RCTRunningInAppExtension()) {
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return nil;
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}
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return [[UIApplication class] performSelector:@selector(sharedApplication)];
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}
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UIWindow *__nullable RCTKeyWindow(void)
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{
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if (RCTRunningInAppExtension()) {
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return nil;
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}
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// TODO: replace with a more robust solution
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return RCTSharedApplication().keyWindow;
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}
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BOOL RCTForceTouchAvailable(void)
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{
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static BOOL forceSupported;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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forceSupported = [UITraitCollection class] &&
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[UITraitCollection instancesRespondToSelector:@selector(forceTouchCapability)];
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});
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return forceSupported &&
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(RCTKeyWindow() ?: [UIView new]).traitCollection.forceTouchCapability == UIForceTouchCapabilityAvailable;
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}
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UIAlertView *__nullable RCTAlertView(NSString *title,
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NSString *__nullable message,
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id __nullable delegate,
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NSString *__nullable cancelButtonTitle,
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NSArray<NSString *> *__nullable otherButtonTitles)
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{
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if (RCTRunningInAppExtension()) {
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RCTLogError(@"RCTAlertView is unavailable when running in an app extension");
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return nil;
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}
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UIAlertView *alertView = [UIAlertView new];
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alertView.title = title;
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alertView.message = message;
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alertView.delegate = delegate;
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if (cancelButtonTitle != nil) {
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[alertView addButtonWithTitle:cancelButtonTitle];
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alertView.cancelButtonIndex = 0;
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}
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for (NSString *buttonTitle in otherButtonTitles) {
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[alertView addButtonWithTitle:buttonTitle];
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}
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return alertView;
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}
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NSError *RCTErrorWithMessage(NSString *message)
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{
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NSDictionary<NSString *, id> *errorInfo = @{NSLocalizedDescriptionKey: message};
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return [[NSError alloc] initWithDomain:RCTErrorDomain code:0 userInfo:errorInfo];
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}
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id RCTNullIfNil(id __nullable value)
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{
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return value ?: (id)kCFNull;
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}
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id __nullable RCTNilIfNull(id __nullable value)
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{
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return value == (id)kCFNull ? nil : value;
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}
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double RCTZeroIfNaN(double value)
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{
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return isnan(value) || isinf(value) ? 0 : value;
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}
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NSURL *RCTDataURL(NSString *mimeType, NSData *data)
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{
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return [NSURL URLWithString:
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[NSString stringWithFormat:@"data:%@;base64,%@", mimeType,
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[data base64EncodedStringWithOptions:(NSDataBase64EncodingOptions)0]]];
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}
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BOOL RCTIsGzippedData(NSData *__nullable); // exposed for unit testing purposes
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BOOL RCTIsGzippedData(NSData *__nullable data)
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{
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UInt8 *bytes = (UInt8 *)data.bytes;
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return (data.length >= 2 && bytes[0] == 0x1f && bytes[1] == 0x8b);
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}
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NSData *__nullable RCTGzipData(NSData *__nullable input, float level)
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{
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if (input.length == 0 || RCTIsGzippedData(input)) {
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return input;
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}
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void *libz = dlopen("/usr/lib/libz.dylib", RTLD_LAZY);
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int (*deflateInit2_)(z_streamp, int, int, int, int, int, const char *, int) = dlsym(libz, "deflateInit2_");
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int (*deflate)(z_streamp, int) = dlsym(libz, "deflate");
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int (*deflateEnd)(z_streamp) = dlsym(libz, "deflateEnd");
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z_stream stream;
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stream.zalloc = Z_NULL;
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stream.zfree = Z_NULL;
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stream.opaque = Z_NULL;
|
|
stream.avail_in = (uint)input.length;
|
|
stream.next_in = (Bytef *)input.bytes;
|
|
stream.total_out = 0;
|
|
stream.avail_out = 0;
|
|
|
|
static const NSUInteger RCTGZipChunkSize = 16384;
|
|
|
|
NSMutableData *output = nil;
|
|
int compression = (level < 0.0f)? Z_DEFAULT_COMPRESSION: (int)(roundf(level * 9));
|
|
if (deflateInit2(&stream, compression, Z_DEFLATED, 31, 8, Z_DEFAULT_STRATEGY) == Z_OK) {
|
|
output = [NSMutableData dataWithLength:RCTGZipChunkSize];
|
|
while (stream.avail_out == 0) {
|
|
if (stream.total_out >= output.length) {
|
|
output.length += RCTGZipChunkSize;
|
|
}
|
|
stream.next_out = (uint8_t *)output.mutableBytes + stream.total_out;
|
|
stream.avail_out = (uInt)(output.length - stream.total_out);
|
|
deflate(&stream, Z_FINISH);
|
|
}
|
|
deflateEnd(&stream);
|
|
output.length = stream.total_out;
|
|
}
|
|
|
|
dlclose(libz);
|
|
|
|
return output;
|
|
}
|
|
|
|
NSString *__nullable RCTBundlePathForURL(NSURL *__nullable URL)
|
|
{
|
|
if (!URL.fileURL) {
|
|
// Not a file path
|
|
return nil;
|
|
}
|
|
NSString *path = URL.path;
|
|
NSString *bundlePath = [[NSBundle mainBundle] resourcePath];
|
|
if (![path hasPrefix:bundlePath]) {
|
|
// Not a bundle-relative file
|
|
return nil;
|
|
}
|
|
path = [path substringFromIndex:bundlePath.length];
|
|
if ([path hasPrefix:@"/"]) {
|
|
path = [path substringFromIndex:1];
|
|
}
|
|
return path;
|
|
}
|
|
|
|
BOOL RCTIsXCAssetURL(NSURL *__nullable imageURL)
|
|
{
|
|
NSString *name = RCTBundlePathForURL(imageURL);
|
|
if (name.pathComponents.count != 1) {
|
|
// URL is invalid, or is a file path, not an XCAsset identifier
|
|
return NO;
|
|
}
|
|
NSString *extension = [name pathExtension];
|
|
if (extension.length && ![extension isEqualToString:@"png"]) {
|
|
// Not a png
|
|
return NO;
|
|
}
|
|
extension = extension.length ? nil : @"png";
|
|
if ([[NSBundle mainBundle] pathForResource:name ofType:extension]) {
|
|
// File actually exists in bundle, so is not an XCAsset
|
|
return NO;
|
|
}
|
|
return YES;
|
|
}
|
|
|
|
RCT_EXTERN NSString *__nullable RCTTempFilePath(NSString *extension, NSError **error)
|
|
{
|
|
static NSError *setupError = nil;
|
|
static NSString *directory;
|
|
static dispatch_once_t onceToken;
|
|
dispatch_once(&onceToken, ^{
|
|
directory = [NSTemporaryDirectory() stringByAppendingPathComponent:@"ReactNative"];
|
|
// If the temporary directory already exists, we'll delete it to ensure
|
|
// that temp files from the previous run have all been deleted. This is not
|
|
// a security measure, it simply prevents the temp directory from using too
|
|
// much space, as the circumstances under which iOS clears it automatically
|
|
// are not well-defined.
|
|
NSFileManager *fileManager = [NSFileManager new];
|
|
if ([fileManager fileExistsAtPath:directory]) {
|
|
[fileManager removeItemAtPath:directory error:NULL];
|
|
}
|
|
if (![fileManager fileExistsAtPath:directory]) {
|
|
NSError *localError = nil;
|
|
if (![fileManager createDirectoryAtPath:directory
|
|
withIntermediateDirectories:YES
|
|
attributes:nil
|
|
error:&localError]) {
|
|
// This is bad
|
|
RCTLogError(@"Failed to create temporary directory: %@", localError);
|
|
setupError = localError;
|
|
directory = nil;
|
|
}
|
|
}
|
|
});
|
|
|
|
if (!directory || setupError) {
|
|
if (error) {
|
|
*error = setupError;
|
|
}
|
|
return nil;
|
|
}
|
|
|
|
// Append a unique filename
|
|
NSString *filename = [NSUUID new].UUIDString;
|
|
if (extension) {
|
|
filename = [filename stringByAppendingPathExtension:extension];
|
|
}
|
|
return [directory stringByAppendingPathComponent:filename];
|
|
}
|
|
|
|
static void RCTGetRGBAColorComponents(CGColorRef color, CGFloat rgba[4])
|
|
{
|
|
CGColorSpaceModel model = CGColorSpaceGetModel(CGColorGetColorSpace(color));
|
|
const CGFloat *components = CGColorGetComponents(color);
|
|
switch (model)
|
|
{
|
|
case kCGColorSpaceModelMonochrome:
|
|
{
|
|
rgba[0] = components[0];
|
|
rgba[1] = components[0];
|
|
rgba[2] = components[0];
|
|
rgba[3] = components[1];
|
|
break;
|
|
}
|
|
case kCGColorSpaceModelRGB:
|
|
{
|
|
rgba[0] = components[0];
|
|
rgba[1] = components[1];
|
|
rgba[2] = components[2];
|
|
rgba[3] = components[3];
|
|
break;
|
|
}
|
|
case kCGColorSpaceModelCMYK:
|
|
case kCGColorSpaceModelDeviceN:
|
|
case kCGColorSpaceModelIndexed:
|
|
case kCGColorSpaceModelLab:
|
|
case kCGColorSpaceModelPattern:
|
|
case kCGColorSpaceModelUnknown:
|
|
{
|
|
|
|
#ifdef RCT_DEBUG
|
|
//unsupported format
|
|
RCTLogError(@"Unsupported color model: %i", model);
|
|
#endif
|
|
|
|
rgba[0] = 0.0;
|
|
rgba[1] = 0.0;
|
|
rgba[2] = 0.0;
|
|
rgba[3] = 1.0;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
NSString *RCTColorToHexString(CGColorRef color)
|
|
{
|
|
CGFloat rgba[4];
|
|
RCTGetRGBAColorComponents(color, rgba);
|
|
uint8_t r = rgba[0]*255;
|
|
uint8_t g = rgba[1]*255;
|
|
uint8_t b = rgba[2]*255;
|
|
uint8_t a = rgba[3]*255;
|
|
if (a < 255) {
|
|
return [NSString stringWithFormat:@"#%02x%02x%02x%02x", r, g, b, a];
|
|
} else {
|
|
return [NSString stringWithFormat:@"#%02x%02x%02x", r, g, b];
|
|
}
|
|
}
|
|
|
|
// (https://github.com/0xced/XCDFormInputAccessoryView/blob/master/XCDFormInputAccessoryView/XCDFormInputAccessoryView.m#L10-L14)
|
|
NSString *RCTUIKitLocalizedString(NSString *string)
|
|
{
|
|
NSBundle *UIKitBundle = [NSBundle bundleForClass:[UIApplication class]];
|
|
return UIKitBundle ? [UIKitBundle localizedStringForKey:string value:string table:nil] : string;
|
|
}
|
|
|
|
NSString *__nullable RCTGetURLQueryParam(NSURL *__nullable URL, NSString *param)
|
|
{
|
|
RCTAssertParam(param);
|
|
if (!URL) {
|
|
return nil;
|
|
}
|
|
NSURLComponents *components = [NSURLComponents componentsWithURL:URL
|
|
resolvingAgainstBaseURL:YES];
|
|
|
|
// TODO: use NSURLComponents.queryItems once we drop support for iOS 7
|
|
for (NSString *item in [components.percentEncodedQuery componentsSeparatedByString:@"&"].reverseObjectEnumerator) {
|
|
NSArray *keyValue = [item componentsSeparatedByString:@"="];
|
|
NSString *key = [keyValue.firstObject stringByRemovingPercentEncoding];
|
|
if ([key isEqualToString:param]) {
|
|
return [keyValue.lastObject stringByRemovingPercentEncoding];
|
|
}
|
|
}
|
|
return nil;
|
|
}
|
|
|
|
NSURL *__nullable RCTURLByReplacingQueryParam(NSURL *__nullable URL, NSString *param, NSString *__nullable value)
|
|
{
|
|
RCTAssertParam(param);
|
|
if (!URL) {
|
|
return nil;
|
|
}
|
|
NSURLComponents *components = [NSURLComponents componentsWithURL:URL
|
|
resolvingAgainstBaseURL:YES];
|
|
|
|
// TODO: use NSURLComponents.queryItems once we drop support for iOS 7
|
|
|
|
// Unhelpfully, iOS doesn't provide this set as a constant
|
|
static NSCharacterSet *URLParamCharacterSet;
|
|
static dispatch_once_t onceToken;
|
|
dispatch_once(&onceToken, ^{
|
|
NSMutableCharacterSet *characterSet = [NSMutableCharacterSet new];
|
|
[characterSet formUnionWithCharacterSet:[NSCharacterSet URLQueryAllowedCharacterSet]];
|
|
[characterSet removeCharactersInString:@"&=?"];
|
|
URLParamCharacterSet = [characterSet copy];
|
|
});
|
|
|
|
NSString *encodedParam =
|
|
[param stringByAddingPercentEncodingWithAllowedCharacters:URLParamCharacterSet];
|
|
|
|
__block NSInteger paramIndex = NSNotFound;
|
|
NSMutableArray *queryItems = [[components.percentEncodedQuery componentsSeparatedByString:@"&"] mutableCopy];
|
|
[queryItems enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:
|
|
^(NSString *item, NSUInteger i, BOOL *stop) {
|
|
NSArray *keyValue = [item componentsSeparatedByString:@"="];
|
|
if ([keyValue.firstObject isEqualToString:encodedParam]) {
|
|
paramIndex = i;
|
|
*stop = YES;
|
|
}
|
|
}];
|
|
|
|
if (!value) {
|
|
if (paramIndex != NSNotFound) {
|
|
[queryItems removeObjectAtIndex:paramIndex];
|
|
}
|
|
} else {
|
|
NSString *encodedValue =
|
|
[value stringByAddingPercentEncodingWithAllowedCharacters:URLParamCharacterSet];
|
|
|
|
NSString *newItem = [encodedParam stringByAppendingFormat:@"=%@", encodedValue];
|
|
if (paramIndex == NSNotFound) {
|
|
[queryItems addObject:newItem];
|
|
} else {
|
|
[queryItems replaceObjectAtIndex:paramIndex withObject:newItem];
|
|
}
|
|
}
|
|
components.percentEncodedQuery = [queryItems componentsJoinedByString:@"&"];
|
|
return components.URL;
|
|
}
|