pdfファイルを読み込もうとしています。この機能を使いたい
databuffer = [file readDataOfLength : 7] but i want read all the byte in the line .
つまり、バイトを見つけるために使用seekToFileOffset
しますが、行を読みたいのです。
NSMutableArray *nameArray = [[NSMutableArray alloc] initWithObjects:nil];
NSMutableArray *nameArrayDict = [[NSMutableArray alloc] initWithObjects:nil];
NSString *path = [[NSBundle mainBundle] pathForResource:@"testpdf" ofType:@"pdf"];
NSString *contents = [NSString stringWithContentsOfFile:path encoding:NSASCIIStringEncoding error:nil];
int var=[[nameArray objectAtIndex:[nameArray count]-2] intValue];
NSFileHandle *file;
NSData *databuffer;
file = [NSFileHandle fileHandleForReadingAtPath: appFile];
int i=0;
while (file!=nil ) {
[file seekToFileOffset: var+i];
databuffer = [file readDataOfLength : 7];
NSString* aStr;
aStr = [[NSString alloc] initWithData: databuffer encoding:NSASCIIStringEncoding];
NSLog(@"%@",aStr);
i=i+[databuffer length];
}
今、私はあなたの解決策を試してみましたが、何も表示できません!!!
CGPDFPageRef page = CGPDFDocumentGetPage (myDocument, 1);// 2
CGPDFDictionaryRef d;
d = CGPDFPageGetDictionary(page);
CGPDFScannerRef myScanner;
CGPDFOperatorTableRef myTable;
myTable = CGPDFOperatorTableCreate();
CGPDFContentStreamRef myContentStream = CGPDFContentStreamCreateWithPage (page);// 3
myScanner = CGPDFScannerCreate (myContentStream, myTable, NULL);// 4
CGPDFScannerScan (myScanner);// 5
CGPDFOperatorTableSetCallback(myTable, "BT", &op_BT);//Begin text object
CGPDFOperatorTableSetCallback(myTable, "ET", &op_ET);//End text object
CGPDFOperatorTableSetCallback (myTable, "MP", &op_MP);
CGPDFOperatorTableSetCallback (myTable, "DP", &op_DP);
CGPDFOperatorTableSetCallback (myTable, "BMC", &op_BMC);
CGPDFOperatorTableSetCallback (myTable, "BDC", &op_BDC);
CGPDFOperatorTableSetCallback (myTable, "EMC", &op_EMC);