PDF/A

1//---------------------------------------------------------------------------------------
2// Copyright (c) 2001-2024 by Apryse Software Inc. All Rights Reserved.
3// Consult legal.txt regarding legal and license information.
4//---------------------------------------------------------------------------------------
5
6#import <OBJC/PDFNetOBJC.h>
7#import <Foundation/Foundation.h>
8
9void PrintResults(PTPDFACompliance *pdf_a, NSString *filename) {
10    unsigned long err_cnt = [pdf_a GetErrorCount];
11    if (err_cnt == 0) 
12    {
13        NSLog(@"%@: OK.", filename);
14    }
15    else 
16    {
17        NSLog(@"%@ is NOT a valid PDFA.", filename);
18        int i = 0;
19        for (; i<err_cnt; ++i) 
20        {
21            int c = [pdf_a GetError: i];
22            NSLog(@" - e_PDFA %d: %@.", c, [PTPDFACompliance GetPDFAErrorMessage: c]);
23            if (true) 
24            {
25                unsigned long num_refs = [pdf_a GetRefObjCount: c];
26                if (num_refs > 0)  
27                {
28                    NSString *str = @"   Objects: ";
29                    int j=0;
30                    for (; j<num_refs; ++j) 
31                    {
32                        str = [str stringByAppendingFormat: @"%lu", [pdf_a GetRefObj: c err_idx: j]];
33                        if (j<num_refs-1) 
34                            str = [str stringByAppendingString: @", "];
35                    }
36                    NSLog(@"%@", str);
37                }
38            }
39        }
40        NSLog(@"\n");
41    }
42}
43
44//---------------------------------------------------------------------------------------
45// The following sample illustrates how to parse and check if a PDF document meets the
46//    PDFA standard, using the PTPDFACompliance class object. 
47//---------------------------------------------------------------------------------------
48int main(int argc, char *argv[])
49{
50    @autoreleasepool {    
51       
52        int ret = 0;
53        
54        [PTPDFNet Initialize: 0];
55        [PTPDFNet SetColorManagement: e_ptlcms];  // Enable color management (required for PDFA validation).
56
57        //-----------------------------------------------------------
58        // Example 1: PDF/A Validation
59        //-----------------------------------------------------------
60        @try
61        {
62            NSString *filename = @"newsletter.pdf";
63            // The max_ref_objs parameter to the PDFACompliance constructor controls the maximum number 
64            // of object numbers that are collected for particular error codes. The default value is 10 
65            // in order to prevent spam. If you need all the object numbers, pass 0 for max_ref_objs.
66            PTPDFACompliance *pdf_a = [[PTPDFACompliance alloc] initWithConvert: NO file_path: @"../../TestFiles/newsletter.pdf" password: @"" conf: e_ptLevel2B exceptions: 0 num_exceptions: 10 max_ref_objs: 10 first_stop: NO];
67            PrintResults(pdf_a, filename);
68        }
69        @catch (NSException *e)
70        {
71            NSLog(@"%@", e.reason);
72            ret = 1;
73        }
74
75        //-----------------------------------------------------------
76        // Example 2: PDF/A Conversion
77        //-----------------------------------------------------------
78        @try
79        {
80            NSString *filename = @"fish.pdf";
81            PTPDFACompliance *pdf_a = [[PTPDFACompliance alloc] initWithConvert: YES file_path: @"../../TestFiles/fish.pdf" password: @"" conf: e_ptLevel2B exceptions: 0 num_exceptions: 10 max_ref_objs: 10 first_stop: NO];
82            filename = @"../../TestFiles/Output/pdfa.pdf";
83            [pdf_a SaveAsFile: filename linearized: NO];
84
85            // Re-validate the document after the conversion...
86            PTPDFACompliance *comp =[[PTPDFACompliance alloc] initWithConvert: NO file_path: filename password: @"" conf: e_ptLevel2B exceptions: 0 num_exceptions: 10 max_ref_objs: 10 first_stop: NO];
87            filename = @"pdfa.pdf";
88            PrintResults(comp, filename);
89        }
90        @catch (NSException *e)
91        {
92            NSLog(@"%@", e.reason);
93            ret = 1;
94        }
95
96        NSLog(@"PDFACompliance test completed.");
97        [PTPDFNet Terminate: 0];
98        return ret;
99    }
100}