Add --verbose flag

ChangeLog

@@ -1,5 +1,8 @@
 2017-08-12  Jay Berkenbilt  <ejb@ql.org>
 
+	* Provide --verbose option that causes qpdf to print an indication
+	of what files it is writing.
+
 	* Change --single-pages to --split-pages and make it take an
 	optional argument specifying the number of pages per file.
 

manual/qpdf-manual.xml

@@ -284,6 +284,15 @@ make
        </para>
       </listitem>
      </varlistentry>
+     <varlistentry>
+      <term><option>--verbose</option></term>
+      <listitem>
+       <para>
+        Increase verbosity of output. For now, this just prints some
+        indication of any file that it creates.
+       </para>
+      </listitem>
+     </varlistentry>
      <varlistentry>
       <term><option>--linearize</option></term>
       <listitem>

qpdf/qpdf.cc

@@ -44,6 +44,7 @@ struct Options
         linearize(false),
         decrypt(false),
         split_pages(0),
+        verbose(false),
         copy_encryption(false),
         encryption_file(0),
         encryption_file_password(0),
@@ -99,6 +100,7 @@ struct Options
     bool linearize;
     bool decrypt;
     int split_pages;
+    bool  verbose;
     bool copy_encryption;
     char const* encryption_file;
     char const* encryption_file_password;
@@ -198,6 +200,7 @@ Basic Options\n\
 -------------\n\
 \n\
 --password=password     specify a password for accessing encrypted files\n\
+--verbose               provide additional informational output\n\
 --linearize             generated a linearized (web optimized) file\n\
 --copy-encryption=file  copy encryption parameters from specified file\n\
 --encryption-file-password=password\n\
@@ -1341,6 +1344,10 @@ static void parse_options(int argc, char* argv[], Options& o)
                 int n = ((parameter == 0) ? 1 : atoi(parameter));
                 o.split_pages = n;
             }
+            else if (strcmp(arg, "verbose") == 0)
+            {
+                o.verbose = true;
+            }
             else if (strcmp(arg, "deterministic-id") == 0)
             {
                 o.deterministic_id = true;
@@ -2033,6 +2040,10 @@ static void write_outfile(QPDF& pdf, Options& o)
             QPDFWriter w(outpdf, outfile.c_str());
             set_writer_options(outpdf, o, w);
             w.write();
+            if (o.verbose)
+            {
+                std::cout << whoami << ": wrote file " << outfile << std::endl;
+            }
         }
     }
     else
@@ -2044,6 +2055,11 @@ static void write_outfile(QPDF& pdf, Options& o)
         QPDFWriter w(pdf, o.outfilename);
         set_writer_options(pdf, o, w);
         w.write();
+        if (o.verbose && o.outfilename)
+        {
+            std::cout << whoami << ": wrote file "
+                      << o.outfilename << std::endl;
+        }
     }
 }
 

qpdf/qtest/qpdf.test

@@ -325,8 +325,8 @@ $td->runtest("check obj0.pdf",
 
 # Min/Force version
 $td->runtest("set min version",
-	     {$td->COMMAND => "qpdf --min-version=1.6 good1.pdf a.pdf"},
-	     {$td->STRING => "",
+	     {$td->COMMAND => "qpdf --verbose --min-version=1.6 good1.pdf a.pdf"},
+	     {$td->STRING => "qpdf: wrote file a.pdf\n",
 	      $td->EXIT_STATUS => 0},
 	     $td->NORMALIZE_NEWLINES);
 $td->runtest("check version",
@@ -730,8 +730,8 @@ for (@sp_cases)
 
 $td->runtest("split page group > 1",
              {$td->COMMAND => "qpdf --static-id --split-pages=5 11-pages.pdf" .
-                  " split-out-group.pdf"},
-             {$td->STRING => "", $td->EXIT_STATUS => 0},
+                  " --verbose split-out-group.pdf"},
+             {$td->FILE => "split-pages-group.out", $td->EXIT_STATUS => 0},
              $td->NORMALIZE_NEWLINES);
 foreach my $f ('01-05', '06-10', '11-11')
 {

qpdf/qtest/qpdf/split-pages-group.out

@@ -0,0 +1,3 @@
+qpdf: wrote file split-out-group-01-05.pdf
+qpdf: wrote file split-out-group-06-10.pdf
+qpdf: wrote file split-out-group-11-11.pdf