Merge pull request #88 from tlaronde/info

Extend by adding pdfioGetModDate and extend the pdfioinfo example

examples/pdfioinfo.c

@@ -25,11 +25,18 @@ main(int  argc,				// I - Number of command-line arguments
 {
   const char	*filename;		// PDF filename
   pdfio_file_t	*pdf;			// PDF file
-  const char	*author;		// Author name
-  time_t	creation_date;		// Creation date
-  struct tm	*creation_tm;		// Creation date/time information
-  char		creation_text[256];	// Creation date/time as a string
+  const char	*author,		// Author name
+  		*creator,		// Creator name
+  		*producer;		// Producer name
+  time_t	creation_date,		// Creation date
+		mod_date;		// Modification date
+  struct tm	*creation_tm,		// Creation date/time information
+		*mod_tm;		// Mod. date/time information
+  char		creation_text[256],	// Creation date/time as a string
+		mod_text[256];		// Mod. date/time human fmt string
   const char	*title;			// Title
+  size_t	num_pages;		// PDF number of pages
+  bool		has_acroform;		// AcroForm or not
 
 
   // Get the filename from the command-line...
@@ -48,9 +55,12 @@ main(int  argc,				// I - Number of command-line arguments
   if (pdf == NULL)
     return (1);
 
-  // Get the title and author...
+  // Get the title, author...
   author = pdfioFileGetAuthor(pdf);
   title  = pdfioFileGetTitle(pdf);
+  creator = pdfioFileGetCreator(pdf);
+  producer = pdfioFileGetProducer(pdf);
+  num_pages = pdfioFileGetNumPages(pdf);
 
   // Get the creation date and convert to a string...
   if ((creation_date = pdfioFileGetCreationDate(pdf)) > 0)
@@ -63,12 +73,82 @@ main(int  argc,				// I - Number of command-line arguments
     snprintf(creation_text, sizeof(creation_text), "-- not set --");
   }
 
+  // Get the modification date and convert to a string...
+  if ((mod_date = pdfioFileGetModDate(pdf)) > 0)
+  {
+    mod_tm   = localtime(&mod_date);
+    strftime(mod_text, sizeof(mod_text), "%c", mod_tm);
+  }
+  else
+  {
+    snprintf(mod_text, sizeof(mod_text), "-- not set --");
+  }
+
+  // Detect simply if AcroFrom is a dict in catalog
+  {
+    pdfio_dict_t	*dict;			// some Object dictionary
+
+    dict = pdfioFileGetCatalog(pdf);
+    has_acroform = (dict != NULL && pdfioDictGetObj(dict, "AcroForm") != NULL)?
+                   true : false;
+  }
+
   // Print file information to stdout...
   printf("%s:\n", filename);
   printf("         Title: %s\n", title ? title : "-- not set --");
   printf("        Author: %s\n", author ? author : "-- not set --");
+  printf("       Creator: %s\n", creator ? creator : "-- not set --");
+  printf("      Producer: %s\n", producer ? producer : "-- not set --");
   printf("    Created On: %s\n", creation_text);
-  printf("  Number Pages: %u\n", (unsigned)pdfioFileGetNumPages(pdf));
+  printf("   Modified On: %s\n", mod_text);
+  printf("       Version: %s\n", pdfioFileGetVersion(pdf));
+  printf("      AcroForm: %s\n", has_acroform ? "Yes" : "No");
+  printf("  Number Pages: %u\n", (unsigned)num_pages);
+  printf("    MediaBoxes:");
+  // There can be a different MediaBox per page
+  // Loop and report MediaBox and number of consecutive pages of this size
+  {
+    pdfio_obj_t		*obj;			// Object
+    pdfio_dict_t	*dict;			// Object dictionary
+    pdfio_rect_t 	prev,			// MediaBox previous
+     			now;			// MediaBox now
+    size_t 		n,			// Page index
+          		nprev;			// Number previous prev size
+
+    // MediaBox should be set at least on the root
+    for (n = nprev = 0; n < num_pages; n++)
+    {
+      obj = pdfioFileGetPage(pdf, n);
+      while (obj != NULL)
+      {
+        dict = pdfioObjGetDict(obj);
+        if (pdfioDictGetRect(dict, "MediaBox", &now))
+        {
+          if ( 
+                nprev == 0
+                || (
+                     now.x1 != prev.x1 || now.y1 != prev.y1
+                     || now.x2 != prev.x2 || now.y2 != prev.y2
+                   )
+             )
+          {
+            if (nprev) printf("(%zd) ", nprev);
+            prev = now;
+            printf("[%.7g %.7g %.7g %.7g]", now.x1, now.y1, now.x2, now.y2);
+            nprev = 1;
+          }
+          else
+            ++nprev;
+	  obj = NULL;
+        }
+        else
+	  obj = pdfioDictGetObj(dict, "Parent");
+      }
+    }
+    printf("(%zd)", nprev);
+  }
+  printf("\n");
+
 
   // Close the PDF file...
   pdfioFileClose(pdf);

pdfio-file.c

@@ -801,6 +801,18 @@ pdfioFileGetKeywords(pdfio_file_t *pdf)	// I - PDF file
 }
 
 
+//
+// 'pdfioFileGetModDate()' - Get the most recent modification date for a PDF file.
+//
+
+time_t					// O - Modification date or `0` for none
+pdfioFileGetModDate(
+    pdfio_file_t *pdf)			// I - PDF file
+{
+  return (pdf && pdf->info_obj ? pdfioDictGetDate(pdfioObjGetDict(pdf->info_obj), "ModDate") : 0);
+}
+
+
 //
 // 'pdfioFileGetName()' - Get a PDF's filename.
 //

pdfio.h

@@ -201,6 +201,7 @@ extern time_t		pdfioFileGetCreationDate(pdfio_file_t *pdf) _PDFIO_PUBLIC;
 extern const char	*pdfioFileGetCreator(pdfio_file_t *pdf) _PDFIO_PUBLIC;
 extern pdfio_array_t	*pdfioFileGetID(pdfio_file_t *pdf) _PDFIO_PUBLIC;
 extern const char	*pdfioFileGetKeywords(pdfio_file_t *pdf) _PDFIO_PUBLIC;
+extern time_t		pdfioFileGetModDate(pdfio_file_t *pdf) _PDFIO_PUBLIC;
 extern const char	*pdfioFileGetName(pdfio_file_t *pdf) _PDFIO_PUBLIC;
 extern size_t		pdfioFileGetNumObjs(pdfio_file_t *pdf) _PDFIO_PUBLIC;
 extern size_t		pdfioFileGetNumPages(pdfio_file_t *pdf) _PDFIO_PUBLIC;

pdfio1.def

@@ -204,6 +204,7 @@ pdfioFileGetCreationDate
 pdfioFileGetCreator
 pdfioFileGetID
 pdfioFileGetKeywords
+pdfioFileGetModDate
 pdfioFileGetName
 pdfioFileGetNumObjs
 pdfioFileGetNumPages