From 47aad1f393ba00a9df45dfb667afb9578a7c16bb Mon Sep 17 00:00:00 2001
From: Andreas Huggel <ahuggel@gmx.net>
Date: Sun, 31 Jul 2005 09:35:15 +0000
Subject: [PATCH] Added experimental bool ExifData::hasMakerNote() method

---
 src/exif.cpp | 9 +++++++++
 src/exif.hpp | 4 ++++
 2 files changed, 13 insertions(+)

diff --git a/src/exif.cpp b/src/exif.cpp
index 73685ca3..512274fc 100644
--- a/src/exif.cpp
+++ b/src/exif.cpp
@@ -899,6 +899,15 @@ namespace Exiv2 {
         return rc;
     } // ExifData::stdThumbPosition
 
+    bool ExifData::hasMakerNote() const
+    {
+        const_iterator e = end();
+        for (const_iterator md = begin(); md != e; ++md) {
+            if (ExifTags::isMakerIfd(md->ifdId())) return true;
+        }
+        return false;
+    } // ExifData::hasMakerNote
+
     ByteOrder ExifData::byteOrder() const
     { 
         if (pTiffHeader_) return pTiffHeader_->byteOrder();
diff --git a/src/exif.hpp b/src/exif.hpp
index b5091b73..dd902ce8 100644
--- a/src/exif.hpp
+++ b/src/exif.hpp
@@ -717,6 +717,10 @@ namespace Exiv2 {
           @brief Returns the byte order. Default is little endian.
          */
         ByteOrder byteOrder() const;
+        /*!
+          @brief Returns true if at least one makernote tag exists, else false.
+         */
+        bool hasMakerNote() const;
         /*!
           @brief Write the thumbnail image to a file. A filename extension
                  is appended to \em path according to the image type of the