I18N: Look for translations data file in Themes path

If the translations.dat file is not found using the SearchMan, it now looks
for that file into the themepath directory and sub-directories (if the path is
defined).

svn-id: r52428

2 files changed, 65 insertions, 7 deletions

diff --git a/common/translation.cpp b/common/translation.cpp
index 063e7a1781..1328ed62d2 100644
--- a/common/translation.cpp
+++ b/common/translation.cpp
@@ -32,6 +32,8 @@
 #define TRANSLATIONS_DAT_VER 2
 
 #include "translation.h"
+#include "common/archive.h"
+#include "common/config-manager.h"
 
 DECLARE_SINGLETON(Common::TranslationManager)
 
@@ -258,9 +260,55 @@ const char *TranslationManager::getLangById(int id) {
 	return "";
 }
 
+bool TranslationManager::openTranslationsFile(File& inFile) {
+	// First try to open it directly (i.e. using the SearchMan).
+	if (inFile.open("translations.dat"))
+		return true;
+	
+	// Then look in the Themepath if we can find the file.
+	if (ConfMan.hasKey("themepath"))
+		return openTranslationsFile(FSNode(ConfMan.get("themepath")), inFile);
+	
+	return false;
+}
+
+bool TranslationManager::openTranslationsFile(const FSNode &node, File& inFile, int depth) {
+	if (!node.exists() || !node.isReadable() || !node.isDirectory())
+		return false;
+	
+	// Check if we can find the file in this directory
+	// Since File::open(FSNode) makes all the needed tests, it is not really
+	// necessary to make them here. But it avoid printing warnings.
+	FSNode fileNode = node.getChild("translations.dat");
+	if (fileNode.exists() && fileNode.isReadable() && !fileNode.isDirectory()) {
+		if (inFile.open(fileNode))
+			return true;
+	}
+	
+	// Check if we exceeded the given recursion depth
+	if (depth - 1 == -1)
+		return false;	
+	
+	// Otherwise look for it in sub-directories
+	FSList fileList;
+	if (!node.getChildren(fileList, FSNode::kListDirectoriesOnly))
+		return false;
+	
+	for (FSList::iterator i = fileList.begin(); i != fileList.end(); ++i) {
+		if (openTranslationsFile(*i, inFile, depth == -1 ? - 1 : depth - 1))
+			return true;
+	}
+	
+	// Not found in this directory or its sub-directories
+	return false;
+}
+
 void TranslationManager::loadTranslationsInfoDat() {
 	File in;
-	in.open("translations.dat");
+	if (!openTranslationsFile(in)) {
+		warning("You are missing the 'translations.dat' file. GUI translation will not be available");
+		return;
+	}
 
 	if (!checkHeader(in))
 		return;
@@ -308,7 +356,8 @@ void TranslationManager::loadLanguageDat(int index) {
 	}
 
 	File in;
-	in.open("translations.dat");
+	if (!openTranslationsFile(in))
+		return;
 
 	if (!checkHeader(in))
 		return;
@@ -360,11 +409,6 @@ bool TranslationManager::checkHeader(File &in) {
 	char buf[13];
 	int ver;
 
-	if (!in.isOpen()) {
-		warning("You are missing the 'translations.dat' file. GUI translation will not be available");
-		return false;
-	}
-
 	in.read(buf, 12);
 	buf[12] = '\0';
 
diff --git a/common/translation.h b/common/translation.h
index af33177559..e1951c1330 100644
--- a/common/translation.h
+++ b/common/translation.h
@@ -28,6 +28,7 @@
 #include "common/singleton.h"
 #include "common/str-array.h"
 #include "common/file.h"
+#include "common/fs.h"
 
 namespace Common {
 
@@ -153,6 +154,19 @@ public:
 private:
 #ifdef USE_TRANSLATION
 	/**
+	 * Find the translations.dat file. It looks first using the SearchMan and
+	 * then if needed using the Themepath. If found it opens the given File
+	 * to read the translations.dat file.
+	 */
+	bool openTranslationsFile(File&);
+
+	/**
+	 * Find the translations.dat file in the given directory node.
+	 * If found it opens the given File to read the translations.dat file.
+	 */
+	bool openTranslationsFile(const FSNode &node, File&, int depth = -1);
+
+	/**
 	 * Load the list of languages from the translations.dat file
 	 */
 	void loadTranslationsInfoDat();