这是我所做的,但它看起来很混乱。提前致谢。
1.使用CGPDFStringCopyTextString从pdf中获取文本
2.将NSString编码为char*
NSStringEncoding enc = CFStringConvertEncodingToNSStringEncoding(kCFStringEncodingGB_18030_2000);
const char *char_content = [self.currentData cStringUsingEncoding:enc];
以下是我如何获取 currentData:
void arrayCallback(CGPDFScannerRef inScanner, void *userInfo)
{
BIDViewController *pp = (__bridge BIDViewController*)userInfo;
CGPDFArrayRef array;
bool success = CGPDFScannerPopArray(inScanner, &array);
for(size_t n = 0; n < CGPDFArrayGetCount(array); n += 1)
{
if(n >= CGPDFArrayGetCount(array))
continue;
CGPDFStringRef string;
success = CGPDFArrayGetString(array, n, &string);
if(success)
{
NSString *data = (__bridge NSString *)CGPDFStringCopyTextString(string);
[pp.currentData appendFormat:@"%@", data];
}
}
}
- (IBAction)press:(id)sender {
table = CGPDFOperatorTableCreate();
CGPDFOperatorTableSetCallback(table, "TJ", arrayCallback);
CGPDFOperatorTableSetCallback(table, "Tj", stringCallback);
self.currentData = [NSMutableString string];
CGPDFContentStreamRef contentStream = CGPDFContentStreamCreateWithPage(pagerf);
CGPDFScannerRef scanner = CGPDFScannerCreate(contentStream, table, (__bridge void *)(self));
bool ret = CGPDFScannerScan(scanner);
}