1/*
2 * Copyright (C) 2005, 2006 Apple Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#if !PLATFORM(IOS)
30
31#import "WebPDFRepresentation.h"
32
33#import "WebDataSourcePrivate.h"
34#import "WebFrame.h"
35#import "WebJSPDFDoc.h"
36#import "WebPDFDocumentExtras.h"
37#import "WebPDFView.h"
38#import "WebTypesInternal.h"
39#import <wtf/Assertions.h>
40#import <wtf/ObjcRuntimeExtras.h>
41#import <JavaScriptCore/JSContextRef.h>
42#import <JavaScriptCore/JSStringRef.h>
43#import <JavaScriptCore/JSStringRefCF.h>
44
45@implementation WebPDFRepresentation
46
47+ (NSArray *)postScriptMIMETypes
48{
49    return [NSArray arrayWithObjects:
50        @"application/postscript",
51        nil];
52}
53
54+ (NSArray *)supportedMIMETypes
55{
56    return [[[self class] postScriptMIMETypes] arrayByAddingObjectsFromArray:
57        [NSArray arrayWithObjects:
58            @"text/pdf",
59            @"application/pdf",
60            nil]];
61}
62
63+ (Class)PDFDocumentClass
64{
65    static Class PDFDocumentClass = nil;
66    if (PDFDocumentClass == nil) {
67        PDFDocumentClass = [[WebPDFView PDFKitBundle] classNamed:@"PDFDocument"];
68        if (PDFDocumentClass == nil) {
69            LOG_ERROR("Couldn't find PDFDocument class in PDFKit.framework");
70        }
71    }
72    return PDFDocumentClass;
73}
74
75- (void)setDataSource:(WebDataSource *)dataSource
76{
77}
78
79- (void)receivedData:(NSData *)data withDataSource:(WebDataSource *)dataSource
80{
81}
82
83- (void)receivedError:(NSError *)error withDataSource:(WebDataSource *)dataSource
84{
85}
86
87- (NSData *)convertPostScriptDataSourceToPDF:(NSData *)data
88{
89    // Convert PostScript to PDF using Quartz 2D API
90    // http://developer.apple.com/documentation/GraphicsImaging/Conceptual/drawingwithquartz2d/dq_ps_convert/chapter_16_section_1.html
91
92    CGPSConverterCallbacks callbacks = { 0, 0, 0, 0, 0, 0, 0, 0 };
93    CGPSConverterRef converter = CGPSConverterCreate(0, &callbacks, 0);
94    ASSERT(converter);
95
96    CGDataProviderRef provider = CGDataProviderCreateWithCFData((CFDataRef)data);
97    ASSERT(provider);
98
99    CFMutableDataRef result = CFDataCreateMutable(kCFAllocatorDefault, 0);
100    ASSERT(result);
101
102    CGDataConsumerRef consumer = CGDataConsumerCreateWithCFData(result);
103    ASSERT(consumer);
104
105    // Error handled by detecting zero-length 'result' in caller
106    CGPSConverterConvert(converter, provider, consumer, 0);
107
108    CFRelease(converter);
109    CFRelease(provider);
110    CFRelease(consumer);
111
112    return CFBridgingRelease(result);
113}
114
115- (void)finishedLoadingWithDataSource:(WebDataSource *)dataSource
116{
117    NSData *data = [dataSource data];
118
119    NSArray *postScriptMIMETypes = [[self class] postScriptMIMETypes];
120    NSString *mimeType = [dataSource _responseMIMEType];
121    if ([postScriptMIMETypes containsObject:mimeType]) {
122        data = [self convertPostScriptDataSourceToPDF:data];
123        if ([data length] == 0)
124            return;
125    }
126
127    WebPDFView *view = (WebPDFView *)[[[dataSource webFrame] frameView] documentView];
128    PDFDocument *doc = [[[[self class] PDFDocumentClass] alloc] initWithData:data];
129    [view setPDFDocument:doc];
130
131    NSArray *scripts = allScriptsInPDFDocument(doc);
132    [doc release];
133    doc = nil;
134
135    NSUInteger scriptCount = [scripts count];
136    if (!scriptCount)
137        return;
138
139    JSGlobalContextRef ctx = JSGlobalContextCreate(0);
140    JSObjectRef jsPDFDoc = makeJSPDFDoc(ctx, dataSource);
141
142    for (NSUInteger i = 0; i < scriptCount; ++i) {
143        JSStringRef script = JSStringCreateWithCFString((CFStringRef)[scripts objectAtIndex:i]);
144        JSEvaluateScript(ctx, script, jsPDFDoc, 0, 0, 0);
145        JSStringRelease(script);
146    }
147
148    JSGlobalContextRelease(ctx);
149}
150
151- (BOOL)canProvideDocumentSource
152{
153    return NO;
154}
155
156
157- (NSString *)documentSource
158{
159    return nil;
160}
161
162
163- (NSString *)title
164{
165    return nil;
166}
167
168@end
169
170#endif // !PLATFORM(IOS)
171