IOS PDF 获取目录 及跳转 DEMO
CGPDFDocumentRef
thePDFDocRef = NULL;
thePDFDocRef = CGPDFDocumentCreateWithURL( pdfDocument.fileURL );
NSMutableArray *cataLogTitles = [NSMutableArray array];
CGPDFDictionaryRef catalogDictionary = CGPDFDocumentGetCatalog(thePDFDocRef);
CGPDFDictionaryRef namesDictionary = NULL;
if (CGPDFDictionaryGetDictionary(catalogDictionary, "Outlines", &namesDictionary)) {
long int myCount;
if (CGPDFDictionaryGetInteger(namesDictionary, "Count", &myCount)) {
NSLog(@"destinationName:%ld", myCount);
}
CGPDFDictionaryRef myDic;
if( CGPDFDictionaryGetDictionary(namesDictionary, "First", &myDic) )
{
CGPDFStringRef myTitle;
if( CGPDFDictionaryGetString(myDic, "Title", &myTitle) )
{
NSString *tempStr = (NSString *)CGPDFStringCopyTextString(myTitle);
NSLog(@"myTitle===:%@", tempStr);
NSString *num = [self returnCatalogListNumber:myDic PDFDoc:thePDFDocRef];
NSDictionary *_MyDic = [NSDictionary dictionaryWithObjectsAndKeys:
tempStr, @"title",
num, @"link",
nil];
[cataLogTitles addObject:_MyDic];
NSLog(@"%@===", num);
CGPDFDictionaryRef tempDic;
tempDic = myDic;
int i = 0;
while ( i < myCount ) {
if( CGPDFDictionaryGetDictionary( tempDic , "Next", &tempDic) )
{
CGPDFStringRef tempTitle;
if( CGPDFDictionaryGetString(tempDic, "Title", &tempTitle) )
{
NSString *tempStr = (NSString *)CGPDFStringCopyTextString(tempTitle);
NSLog(@"myTitle:%@", tempStr);
NSString *num = [self returnCatalogListNumber:tempDic PDFDoc:thePDFDocRef];
NSLog(@"%@", num);
NSDictionary *_MyDic = [NSDictionary dictionaryWithObjectsAndKeys:
tempStr, @"title",
num, @"link",
nil];
[cataLogTitles addObject:_MyDic];
}
}
i++;
}
}
}
}
NSLog(@"%@", cataLogTitles);
//=============
-(NSString *)returnCatalogListNumber:(CGPDFDictionaryRef)tempCGPDFDic PDFDoc:(CGPDFDocumentRef)tempCGPDFDoc
{
//------
CGPDFDictionaryRef destDic;
if( CGPDFDictionaryGetDictionary(tempCGPDFDic, "A", &destDic ))
{
CGPDFArrayRef destArray;
if( CGPDFDictionaryGetArray(destDic, "D", &destArray) )
{
NSInteger targetPageNumber = 0; // The target page number
CGPDFDictionaryRef pageDictionaryFromDestArray = NULL; // Target reference
if (CGPDFArrayGetDictionary(destArray, 0, &pageDictionaryFromDestArray) == true)
{
NSInteger pageCount = CGPDFDocumentGetNumberOfPages(tempCGPDFDoc);
for (NSInteger pageNumber = 1; pageNumber <= pageCount; pageNumber++)
{
CGPDFPageRef pageRef = CGPDFDocumentGetPage(tempCGPDFDoc, pageNumber);
CGPDFDictionaryRef pageDictionaryFromPage = CGPDFPageGetDictionary(pageRef);
if (pageDictionaryFromPage == pageDictionaryFromDestArray) // Found it
{
targetPageNumber = pageNumber; break;
}
}
}
else // Try page number from array possibility
{
CGPDFInteger pageNumber = 0; // Page number in array
if (CGPDFArrayGetInteger(destArray, 0, &pageNumber) == true)
{
targetPageNumber = (pageNumber + 1); // 1-based
}
}
//NSLog(@"%d====", targetPageNumber);
if (targetPageNumber > 0) // We have a target page number
{
return [NSString stringWithFormat:@"%d", targetPageNumber];
}
}
}
return @"0";
//------
}
CGPDFDocumentRef thePDFDocRef = NULL;
thePDFDocRef = CGPDFDocumentCreateWithURL( pdfDocument.fileURL );
NSMutableArray *cataLogTitles = [NSMutableArray array];
CGPDFDictionaryRef catalogDictionary = CGPDFDocumentGetCatalog(thePDFDocRef);
CGPDFDictionaryRef namesDictionary = NULL;
if (CGPDFDictionaryGetDictionary(catalogDictionary, "Outlines", &namesDictionary)) {
long int myCount;
if (CGPDFDictionaryGetInteger(namesDictionary, "Count", &myCount)) {
NSLog(@"destinationName:%ld", myCount);
}
CGPDFDictionaryRef myDic;
if( CGPDFDictionaryGetDictionary(namesDictionary, "First", &myDic) )
{
CGPDFStringRef myTitle;
if( CGPDFDictionaryGetString(myDic, "Title", &myTitle) )
{
NSString *tempStr = (NSString *)CGPDFStringCopyTextString(myTitle);
NSLog(@"myTitle===:%@", tempStr);
NSString *num = [self returnCatalogListNumber:myDic PDFDoc:thePDFDocRef];
NSDictionary *_MyDic = [NSDictionary dictionaryWithObjectsAndKeys:
tempStr, @"title",
num, @"link",
nil];
[cataLogTitles addObject:_MyDic];
NSLog(@"%@===", num);
CGPDFDictionaryRef tempDic;
tempDic = myDic;
int i = 0;
while ( i < myCount ) {
if( CGPDFDictionaryGetDictionary( tempDic , "Next", &tempDic) )
{
CGPDFStringRef tempTitle;
if( CGPDFDictionaryGetString(tempDic, "Title", &tempTitle) )
{
NSString *tempStr = (NSString *)CGPDFStringCopyTextString(tempTitle);
NSLog(@"myTitle:%@", tempStr);
NSString *num = [self returnCatalogListNumber:tempDic PDFDoc:thePDFDocRef];
NSLog(@"%@", num);
NSDictionary *_MyDic = [NSDictionary dictionaryWithObjectsAndKeys:
tempStr, @"title",
num, @"link",
nil];
[cataLogTitles addObject:_MyDic];
}
}
i++;
}
}
}
}
NSLog(@"%@", cataLogTitles);
//=============
-(NSString *)returnCatalogListNumber:(CGPDFDictionaryRef)tempCGPDFDic PDFDoc:(CGPDFDocumentRef)tempCGPDFDoc
{
//------
CGPDFDictionaryRef destDic;
if( CGPDFDictionaryGetDictionary(tempCGPDFDic, "A", &destDic ))
{
CGPDFArrayRef destArray;
if( CGPDFDictionaryGetArray(destDic, "D", &destArray) )
{
NSInteger targetPageNumber = 0; // The target page number
CGPDFDictionaryRef pageDictionaryFromDestArray = NULL; // Target reference
if (CGPDFArrayGetDictionary(destArray, 0, &pageDictionaryFromDestArray) == true)
{
NSInteger pageCount = CGPDFDocumentGetNumberOfPages(tempCGPDFDoc);
for (NSInteger pageNumber = 1; pageNumber <= pageCount; pageNumber++)
{
CGPDFPageRef pageRef = CGPDFDocumentGetPage(tempCGPDFDoc, pageNumber);
CGPDFDictionaryRef pageDictionaryFromPage = CGPDFPageGetDictionary(pageRef);
if (pageDictionaryFromPage == pageDictionaryFromDestArray) // Found it
{
targetPageNumber = pageNumber; break;
}
}
}
else // Try page number from array possibility
{
CGPDFInteger pageNumber = 0; // Page number in array
if (CGPDFArrayGetInteger(destArray, 0, &pageNumber) == true)
{
targetPageNumber = (pageNumber + 1); // 1-based
}
}
//NSLog(@"%d====", targetPageNumber);
if (targetPageNumber > 0) // We have a target page number
{
return [NSString stringWithFormat:@"%d", targetPageNumber];
}
}
}
return @"0";
//------
}
附带一个查看pdf数据结构的工具
https://github.com/below/PDF-Voyeur