ConfigLine.includedFrom stores source, if it was read from included file

This is a base change which prepares for subsequent bugfixes.

Change-Id: Iaadc93df37e45753d700be73669e68c03590adb5
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com>

org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java

@@ -1060,11 +1060,11 @@ public class Config {
 	 *             made to {@code this}.
 	 */
 	public void fromText(String text) throws ConfigInvalidException {
-		state.set(newState(fromTextRecurse(text, 1)));
+		state.set(newState(fromTextRecurse(text, 1, null)));
 	}
 
-	private List<ConfigLine> fromTextRecurse(String text, int depth)
-			throws ConfigInvalidException {
+	private List<ConfigLine> fromTextRecurse(String text, int depth,
+			String includedFrom) throws ConfigInvalidException {
 		if (depth > MAX_DEPTH) {
 			throw new ConfigInvalidException(
 					JGitText.get().tooManyIncludeRecursions);
@@ -1073,6 +1073,7 @@ public class Config {
 		final StringReader in = new StringReader(text);
 		ConfigLine last = null;
 		ConfigLine e = new ConfigLine();
+		e.includedFrom = includedFrom;
 		for (;;) {
 			int input = in.read();
 			if (-1 == input) {
@@ -1088,7 +1089,7 @@ public class Config {
 				if (e.section != null)
 					last = e;
 				e = new ConfigLine();
-
+				e.includedFrom = includedFrom;
 			} else if (e.suffix != null) {
 				// Everything up until the end-of-line is in the suffix.
 				e.suffix += c;
@@ -1173,7 +1174,7 @@ public class Config {
 			decoded = RawParseUtils.decode(bytes);
 		}
 		try {
-			newEntries.addAll(fromTextRecurse(decoded, depth + 1));
+			newEntries.addAll(fromTextRecurse(decoded, depth + 1, line.value));
 		} catch (ConfigInvalidException e) {
 			throw new ConfigInvalidException(MessageFormat
 					.format(JGitText.get().cannotReadFile, line.value), e);

org.eclipse.jgit/src/org/eclipse/jgit/lib/ConfigLine.java

@@ -73,6 +73,9 @@ class ConfigLine {
 	/** The text content after entry. */
 	String suffix;
 
+	/** The source from which this line was included from. */
+	String includedFrom;
+
 	ConfigLine forValue(String newValue) {
 		final ConfigLine e = new ConfigLine();
 		e.prefix = prefix;
@@ -81,6 +84,7 @@ class ConfigLine {
 		e.name = name;
 		e.value = newValue;
 		e.suffix = suffix;
+		e.includedFrom = includedFrom;
 		return e;
 	}