Add data getter

src/core/desktopfilereader.cpp

@@ -146,6 +146,10 @@ namespace linuxdeploy {
                 return d->path;
             }
 
+            DesktopFile::sections_t DesktopFileReader::data() const {
+                return d->sections;
+            }
+
             DesktopFile::section_t DesktopFileReader::operator[](const std::string& name) const {
                 auto it = d->sections.find(name);
 

src/core/desktopfilereader.h

@@ -56,6 +56,10 @@ namespace linuxdeploy {
                 // get a specific section from the parsed data
                 // throws std::range_error if section does not exist
                 DesktopFile::section_t operator[](const std::string& name) const;
+
+                // get copy of internal data storage
+                // can be handed to a DesktopFileWriter instance, or to manually hack on the data
+                DesktopFile::sections_t data() const;
             };
         }
     }

tests/core/test_desktopfilereader.cpp

@@ -166,3 +166,24 @@ TEST_F(DesktopFileReaderFixture, testParseFileWithLeadingAndTrailingWhitespaceIn
     EXPECT_EQ(section["Name"].value(), "name");
     EXPECT_EQ(section["Exec"].value(), "exec");
 }
+
+TEST_F(DesktopFileReaderFixture, testDataGetter) {
+    std::stringstream ss;
+    ss << "[Desktop File]" << std::endl
+       << "Name= name" << std::endl
+       << "Exec =exec" << std::endl;
+
+    DesktopFileReader reader(ss);
+
+    auto section = reader["Desktop File"];
+    EXPECT_FALSE(section.empty());
+
+    auto data = reader.data();
+
+    auto expected = DesktopFile::section_t({
+        {"Name", DesktopFileEntry("Name", "name")},
+        {"Exec", DesktopFileEntry("Exec", "exec")},
+    });
+
+    EXPECT_EQ(data["Desktop File"], expected);
+}