Switch from parseContentStream to parsePageContents

ChangeLog

@@ -57,6 +57,11 @@
 	problems are encountered as the error messages can include
 	information about which page the streams come from.
 
+	* Update content stream parsing example
+	(examples/pdf-parse-content.cc) to use new
+	QPDFObjectHandle::parsePageContents() method in favor of the older
+	QPDFObjectHandle::parseContentStream() method.
+
 2018-02-04  Jay Berkenbilt  <ejb@ql.org>
 
 	* Add QPDFWriter::setLinearizationPass1Filename method and

examples/pdf-parse-content.cc

@@ -75,9 +75,8 @@ int main(int argc, char* argv[])
         }
 
         QPDFObjectHandle page = pages.at(pageno-1);
-        QPDFObjectHandle contents = page.getKey("/Contents");
         ParserCallbacks cb;
-        QPDFObjectHandle::parseContentStream(contents, &cb);
+        page.parsePageContents(&cb);
     }
     catch (std::exception& e)
     {

qpdf/qpdf.cc

@@ -1769,9 +1769,7 @@ static void do_check(QPDF& pdf, Options& o, int& exit_code)
             ++pageno;
             try
             {
-                QPDFObjectHandle::parseContentStream(
+                (*iter).parsePageContents(&discard_contents);
-                    (*iter).getKey("/Contents"),
-                    &discard_contents);
             }
             catch (QPDFExc& e)
             {

qpdf/qtest/qpdf/content-stream-errors.out

@@ -2,6 +2,6 @@ checking content-stream-errors.pdf
 PDF Version: 1.3
 File is not encrypted
 File is not linearized
-page 1: content stream objects 7 0 (content, file position 52): parse error while reading object
+page 1: page object 3 0 stream 7 0 (content, file position 52): parse error while reading object
-page 3: content stream objects 15 0 (stream data, file position 117): EOF found while reading inline image
+page 3: page object 5 0 stream 15 0 (stream data, file position 117): EOF found while reading inline image
-page 4: content stream objects 19 0 (content, file position 53): parse error while reading object
+page 4: page object 6 0 stream 19 0 (content, file position 53): parse error while reading object

qpdf/qtest/qpdf/eof-in-inline-image.out

@@ -22,4 +22,4 @@ name: /Fl
 name: /DP
 dictionary: << /Columns 1 /Predictor 15 >>
 operator: ID
-content stream objects 4 0 (stream data, file position 139): EOF found while reading inline image
+page object 3 0 stream 4 0 (stream data, file position 139): EOF found while reading inline image

qpdf/qtest/qpdf/split-content-stream-errors.out

@@ -4,6 +4,6 @@ File is not encrypted
 File is not linearized
 WARNING: split-content-stream-errors.pdf (file position 557): error decoding stream data for object 6 0: LZWDecoder: bad code received
 WARNING: split-content-stream-errors.pdf (file position 557): stream will be re-processed without filtering to avoid data loss
-WARNING: content stream objects (item index 0 (from 0)): ignoring non-stream in an array of streams
+WARNING: page object 3 0 (item index 0 (from 0)): ignoring non-stream in an array of streams
 WARNING: split-content-stream-errors.pdf (file position 557): error decoding stream data for object 6 0: LZWDecoder: bad code received
 WARNING: content stream (content stream object 6 0): errors while decoding content stream

qpdf/test_driver.cc

@@ -1296,9 +1296,8 @@ void runtest(int n, char const* filename1, char const* arg2)
              iter != pages.end(); ++iter)
         {
             QPDFObjectHandle page = *iter;
-            QPDFObjectHandle contents = page.getKey("/Contents");
             ParserCallbacks cb;
-            QPDFObjectHandle::parseContentStream(contents, &cb);
+            page.parsePageContents(&cb);
         }
     }
     else if (n == 38)