Refactoring:Xmlconfig:Moving layout definition in their own .xml file (makes main navit.xml file lighter) (#559)

Layouts contain quite heavy xml code, and there are many layouts available for navit.
They are all inserted inside the main navit.xml, which makes it hard to edit because of its size, even if changes or customizations by users are very rarely on the layout code.
I have thus moved the layout code away from navit.xml, each layout having its own xml definition file, called navit_layout_*.xml
These files are inserted inside the main navit.xml file by using the already existing xi:include mechanism, this also allow for backwards compatibility (old monolithic navit.xml files are still valid and can be used).
The other advantage for this is that f the user wants to have his/her own customized navit.xml, he/she can still include the shipped layout files, making their xml lighter. This also allow to enable/disable specific layouts easily by including or not each layout file.
It is also easier to perform side-by-side comparison between two layout files.

1 files changed, 14 insertions, 2 deletions

diff --git a/navit/file.c b/navit/file.c
index 0ef39bddd..4d7f226f8 100644
--- a/navit/file.c
+++ b/navit/file.c
@@ -231,7 +231,13 @@ file_create_url(char *url) {
 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
 #endif
 
-int file_is_dir(char *name) {
+/**
+ * @brief Check if a given path corresponds to a directory
+ *
+ * @param name The path to the filesystem element
+ * @return !=0 (true) if @p name is a directory
+ */
+int file_is_dir(const char *name) {
     struct stat buf;
     if (! stat(name, &buf)) {
         return S_ISDIR(buf.st_mode);
@@ -240,7 +246,13 @@ int file_is_dir(char *name) {
 
 }
 
-int file_is_reg(char *name) {
+/**
+ * @brief Check if a given path corresponds to a regular file
+ *
+ * @param name The path to the filesystem element
+ * @return !=0 (true) if @p name is a regular file
+ */
+int file_is_reg(const char *name) {
     struct stat buf;
     if (! stat(name, &buf)) {
         return S_ISREG(buf.st_mode);