mirror of
https://github.com/samsonjs/arq_restore.git
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98 lines
3.5 KiB
Objective-C
98 lines
3.5 KiB
Objective-C
/*
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Copyright (c) 2009-2011, Stefan Reitshamer http://www.haystacksoftware.com
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the names of PhotoMinds LLC or Haystack Software, nor the names of
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their contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#import "IntegerIO.h"
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#import "StringIO.h"
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#import "DataInputStream.h"
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#import "Streams.h"
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#import "NSData-InputStream.h"
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#import "BooleanIO.h"
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#import "BufferedInputStream.h"
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#import "BufferedOutputStream.h"
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#import "SetNSError.h"
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@implementation StringIO
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+ (void)write:(NSString *)str to:(NSMutableData *)data {
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[BooleanIO write:(str != nil) to:data];
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if (str != nil) {
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const char *utf8 = [str UTF8String];
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uint64_t len = (uint64_t)strlen(utf8);
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[IntegerIO writeUInt64:len to:data];
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[data appendBytes:utf8 length:len];
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}
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}
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+ (BOOL)write:(NSString *)str to:(BufferedOutputStream *)os error:(NSError **)error {
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//FIXME: This is really inefficient!
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NSMutableData *data = [[NSMutableData alloc] init];
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[StringIO write:str to:data];
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BOOL ret = [os writeFully:[data bytes] length:[data length] error:error];
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[data release];
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return ret;
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}
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+ (BOOL)read:(NSString **)value from:(BufferedInputStream *)is error:(NSError **)error {
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if (![StringIO newString:value from:is error:error]) {
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return NO;
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}
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[*value autorelease];
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return YES;
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}
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+ (BOOL)newString:(NSString **)value from:(BufferedInputStream *)is error:(NSError **)error {
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*value = nil;
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BOOL isNotNil = NO;
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if (![BooleanIO read:&isNotNil from:is error:error]) {
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return NO;
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}
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if (isNotNil) {
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uint64_t len;
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if (![IntegerIO readUInt64:&len from:is error:error]) {
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return NO;
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}
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if (len > 2147483648) {
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SETNSERROR(@"InputStreamErrorDomain", -1, @"absurd string length %llu in [StringIO newString:]", len);
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return NO;
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}
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unsigned char *buf = (unsigned char *)malloc(len);
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*value = nil;
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BOOL ret = [is readExactly:len into:buf error:error];
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if (ret) {
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*value = [[NSString alloc] initWithBytes:buf length:len encoding:NSUTF8StringEncoding];
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}
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free(buf);
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if (!ret) {
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return NO;
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}
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}
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return YES;
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}
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@end
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