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XMLRPCDefaultEncoder.m
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XMLRPCDefaultEncoder.m
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#import "XMLRPCDefaultEncoder.h"
#import "NSStringAdditions.h"
#import "NSData+Base64.h"
// If you change this, be sure it's a multiple of 90. The Base64 encoding adds a new line every 90 characters.
#define kChunkSize 18000
#pragma mark -
@interface XMLRPCDefaultEncoder (XMLRPCEncoderPrivate)
- (void)valueTag: (NSString *)tag value: (NSString *)value;
#pragma mark -
- (void)encodeObject: (id)object;
#pragma mark -
- (void)encodeArray: (NSArray *)array;
- (void)encodeDictionary: (NSDictionary *)dictionary;
#pragma mark -
- (void)encodeBoolean: (CFBooleanRef)boolean;
- (void)encodeNumber: (NSNumber *)number;
- (void)encodeString: (NSString *)string;
- (void)encodeDate: (NSDate *)date;
- (void)encodeData: (NSData *)data;
#pragma mark -
- (void)appendString: (NSString *)string;
- (void)appendStringWithFormat: (NSString *)format, ...;
#pragma mark -
- (void)openEncodingCache;
@end
#pragma mark -
@implementation XMLRPCDefaultEncoder
- (id)init {
if (self = [super init]) {
myMethod = [[NSString alloc] init];
myParameters = [[NSArray alloc] init];
}
return self;
}
#pragma mark -
- (id)encode {
[self encodeAndCache];
NSInputStream *stream = [NSInputStream inputStreamWithFileAtPath: myEncodingCacheFilePath];
NSMutableData *encodingCacheData = [NSMutableData data];
[stream open];
while ([stream hasBytesAvailable]) {
uint8_t buffer[1024];
unsigned int length = [stream read: buffer maxLength: 1024];
if (length) {
[encodingCacheData appendBytes: buffer length: length];
}
}
[stream close];
#if ! __has_feature(objc_arc)
return [[[NSString alloc] initWithData: encodingCacheData encoding: NSUTF8StringEncoding] autorelease];
#else
return [[NSString alloc] initWithData: encodingCacheData encoding: NSUTF8StringEncoding];
#endif
}
#pragma mark -
- (void)encodeAndCache {
if (myEncodingCacheFilePath) {
return;
}
[self openEncodingCache];
[self appendString: @"<?xml version=\"1.0\"?><methodCall><methodName>"];
[self appendString: [myMethod escapedString]];
[self appendString: @"</methodName><params>"];
if (myParameters) {
for (id parameter in myParameters) {
[self appendString: @"<param>"];
[self encodeObject: parameter];
[self appendString: @"</param>"];
}
}
[self appendString: @"</params>"];
[self appendString: @"</methodCall>"];
[myEncodingCacheFile synchronizeFile];
}
#pragma mark -
- (NSNumber *)encodedLength {
if (!myEncodingCacheFilePath) {
[self encodeAndCache];
}
NSError *error = nil;
NSDictionary *attributes = [[NSFileManager defaultManager] attributesOfItemAtPath: myEncodingCacheFilePath error: &error];
if (error) {
return nil;
}
return [attributes objectForKey: NSFileSize];
}
#pragma mark -
- (void)setMethod: (NSString *)method withParameters: (NSArray *)parameters {
#if ! __has_feature(objc_arc)
if (myMethod) {
[myMethod release];
}
if (!method) {
myMethod = nil;
} else {
myMethod = [method retain];
}
if (myParameters) {
[myParameters release];
}
if (!parameters) {
myParameters = nil;
} else {
myParameters = [parameters retain];
}
#else
myMethod = method;
myParameters = parameters;
#endif
}
#pragma mark -
- (NSString *)method {
return myMethod;
}
- (NSArray *)parameters {
return myParameters;
}
#pragma mark -
- (void)dealloc {
if (myEncodingCacheFile) {
[myEncodingCacheFile closeFile];
[[NSFileManager defaultManager] removeItemAtPath: myEncodingCacheFilePath error: nil];
}
#if ! __has_feature(objc_arc)
[myMethod release];
[myParameters release];
[myEncodingCacheFile release];
[myEncodingCacheFilePath release];
[super dealloc];
#endif
}
@end
#pragma mark -
@implementation XMLRPCDefaultEncoder (XMLRPCEncoderPrivate)
- (void)valueTag: (NSString *)tag value: (NSString *)value {
[self appendStringWithFormat: @"<value><%@>%@</%@></value>", tag, value, tag];
}
#pragma mark -
- (void)encodeObject: (id)object {
if (!object) {
return;
}
if ([object isKindOfClass: [NSArray class]]) {
[self encodeArray: object];
} else if ([object isKindOfClass: [NSDictionary class]]) {
[self encodeDictionary: object];
#if ! __has_feature(objc_arc)
} else if (((CFBooleanRef)object == kCFBooleanTrue) || ((CFBooleanRef)object == kCFBooleanFalse)) {
#else
} else if (((__bridge_retained CFBooleanRef)object == kCFBooleanTrue) || ((__bridge_retained CFBooleanRef)object == kCFBooleanFalse)) {
#endif
[self encodeBoolean: (CFBooleanRef)object];
} else if ([object isKindOfClass: [NSNumber class]]) {
[self encodeNumber: object];
} else if ([object isKindOfClass: [NSString class]]) {
[self encodeString: object];
} else if ([object isKindOfClass: [NSDate class]]) {
[self encodeDate: object];
} else if ([object isKindOfClass: [NSData class]]) {
[self encodeData: object];
} else if ([object isKindOfClass: [NSInputStream class]]) {
[self encodeInputStream: object];
} else if ([object isKindOfClass: [NSFileHandle class]]) {
[self encodeFileHandle: object];
} else {
[self encodeString: object];
}
}
#pragma mark -
- (void)encodeArray: (NSArray *)array {
[self appendString: @"<value><array><data>"];
for (id object in array) {
[self encodeObject: object];
}
[self appendString: @"</data></array></value>"];
}
- (void)encodeDictionary: (NSDictionary *)dictionary {
[self appendString: @"<value><struct>"];
for (id key in [dictionary allKeys]) {
[self appendString: @"<member>"];
[self appendString: @"<name>"];
[self encodeString: key];
[self appendString: @"</name>"];
id value = [dictionary objectForKey: key];
if (value != [NSNull null]) {
[self encodeObject: value];
} else {
[self appendString: @"<value><nil/></value>"];
}
[self appendString: @"</member>"];
}
[self appendString: @"</struct></value>"];
}
#pragma mark -
- (void)encodeBoolean: (CFBooleanRef)boolean {
if (boolean == kCFBooleanTrue) {
[self valueTag: @"boolean" value: @"1"];
} else {
[self valueTag: @"boolean" value: @"0"];
}
}
- (void)encodeNumber: (NSNumber *)number {
NSString *numberType = [NSString stringWithCString: [number objCType] encoding: NSUTF8StringEncoding];
if ([numberType isEqualToString: @"d"]) {
[self valueTag: @"double" value: [number stringValue]];
} else {
[self valueTag: @"i4" value: [number stringValue]];
}
}
- (void)encodeString: (NSString *)string {
[self valueTag: @"string" value: [string escapedString]];
}
- (void)encodeDate: (NSDate *)date {
unsigned components = kCFCalendarUnitYear | kCFCalendarUnitMonth | kCFCalendarUnitDay | kCFCalendarUnitHour | kCFCalendarUnitMinute | kCFCalendarUnitSecond;
NSDateComponents *dateComponents = [[NSCalendar currentCalendar] components: components fromDate: date];
NSString *buffer = [NSString stringWithFormat: @"%.4d%.2d%.2dT%.2d:%.2d:%.2d", [dateComponents year], [dateComponents month], [dateComponents day], [dateComponents hour], [dateComponents minute], [dateComponents second], nil];
[self valueTag: @"dateTime.iso8601" value: buffer];
}
- (void)encodeData: (NSData *)data {
[self valueTag: @"base64" value: [data base64EncodedString]];
}
#pragma mark -
- (void)encodeInputStream: (NSInputStream *)stream {
[self appendString: @"<value><base64>"];
[stream open];
while ([stream hasBytesAvailable]) {
uint8_t buffer[kChunkSize];
unsigned int length = [stream read: buffer maxLength: kChunkSize];
if (length) {
@autoreleasepool {
NSData *chunk = [NSData dataWithBytes: buffer length: length];
[self appendString: [chunk base64EncodedString]];
}
}
}
[stream close];
[self appendString: @"</base64></value>"];
}
- (void)encodeFileHandle: (NSFileHandle *)handle {
NSData *chunk = [handle readDataOfLength: kChunkSize];
[self appendString: @"<value><base64>"];
while ([chunk length] > 0) {
@autoreleasepool {
[self appendString: [chunk base64EncodedString]];
chunk = [handle readDataOfLength: kChunkSize];
}
}
[self appendString: @"</base64></value>"];
}
#pragma mark -
- (void)appendString: (NSString *)string {
[myEncodingCacheFile writeData: [string dataUsingEncoding: NSUTF8StringEncoding]];
}
- (void)appendStringWithFormat: (NSString *)format, ... {
va_list arguments;
va_start(arguments, format);
NSString *string = nil;
#if ! __has_feature(objc_arc)
string = [[[NSString alloc] initWithFormat: format arguments: arguments] autorelease];
#else
string = [[NSString alloc] initWithFormat: format arguments: arguments];
#endif
[self appendString: string];
}
#pragma mark -
- (void)openEncodingCache {
if (myEncodingCacheFile) {
return;
}
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *availablePaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *cacheDirectory = [availablePaths objectAtIndex: 0];
NSString *guid = [[NSProcessInfo processInfo] globallyUniqueString];
myEncodingCacheFilePath = [[cacheDirectory stringByAppendingPathComponent: guid] retain];
[fileManager createFileAtPath: myEncodingCacheFilePath contents: nil attributes: nil];
myEncodingCacheFile = [[NSFileHandle fileHandleForWritingAtPath: myEncodingCacheFilePath] retain];
}
@end