/* Copyright (c) 2007 Christopher J. W. Lloyd

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */

#import <Foundation/NSString.h>
#import <Onyx2D/O2PDFContext.h>
#import <Onyx2D/O2PDFString.h>
#import <string.h>

@implementation O2PDFString

- initWithBytes: (const unsigned char *) bytes length: (unsigned) length {
    _length = length;
    _noCopyNoFree = NO;
    _bytes = NSZoneMalloc(NULL, length);
    strncpy((char *) _bytes, (const char *) bytes, length);
    return self;
}

- initWithBytesNoCopyNoFree: (const unsigned char *) bytes
                     length: (unsigned) length
{
    _length = length;
    _noCopyNoFree = YES;
    _bytes = (unsigned char *) bytes;
    return self;
}

- (void) dealloc {
    if (!_noCopyNoFree)
        NSZoneFree(NULL, _bytes);
    [super dealloc];
}

+ pdfObjectWithBytes: (const unsigned char *) bytes length: (unsigned) length {
    return [[(O2PDFString *) [self alloc] initWithBytes: bytes
                                                 length: length] autorelease];
}

+ pdfObjectWithBytesNoCopyNoFree: (const unsigned char *) bytes
                          length: (unsigned) length
{
    return [[(O2PDFString *) [self alloc] initWithBytesNoCopyNoFree: bytes
                                                             length: length]
            autorelease];
}

+ pdfObjectWithCString: (const char *) cString {
    return [[(O2PDFString *) [self alloc]
            initWithBytes: (const unsigned char *) cString
                   length: strlen(cString)] autorelease];
}

+ pdfObjectWithString: (NSString *) string {
    NSData *data = [string dataUsingEncoding: NSISOLatin1StringEncoding];

    return [[(O2PDFString *) [self alloc] initWithBytes: [data bytes]
                                                 length: [data length]]
            autorelease];
}

- (O2PDFObjectType) objectType {
    return kO2PDFObjectTypeString;
}

- (BOOL) checkForType: (O2PDFObjectType) type value: (void *) value {
    if (type != kO2PDFObjectTypeString)
        return NO;

    *((O2PDFString **) value) = self;
    return YES;
}

- (unsigned) length {
    return _length;
}

- (const unsigned char *) bytes {
    return _bytes;
}

size_t O2PDFStringGetLength(O2PDFStringRef string) {
    return string->_length;
}

const unsigned char *O2PDFStringGetBytePtr(O2PDFStringRef string) {
    return string->_bytes;
}

- (void) encodeWithPDFContext: (O2PDFContext *) encoder {
    [encoder appendPDFStringWithBytes: _bytes length: _length];
}

- (NSString *) description {
    char s[_length + 1];

    strncpy(s, (const char *) _bytes, _length);
    s[_length] = '\0';
    return [NSString stringWithFormat: @"<%@ %s>", [self class], s];
}

@end