#include <algorithm>
+#include <glib.h>
+#include <glib/gstdio.h>
+
#include <glibmm/fileutils.h>
#include <glibmm/miscutils.h>
#include <glibmm/pattern.h>
}
}
+std::string
+get_absolute_path (const std::string & p)
+{
+ Glib::RefPtr<Gio::File> f = Gio::File::create_for_path (p);
+ return f->get_path ();
+}
+
+bool
+equivalent_paths (const std::string& a, const std::string& b)
+{
+ struct stat bA;
+ int const rA = g_stat (a.c_str(), &bA);
+ struct stat bB;
+ int const rB = g_stat (b.c_str(), &bB);
+
+ return (rA == 0 && rB == 0 && bA.st_dev == bB.st_dev && bA.st_ino == bB.st_ino);
+}
+
+bool
+path_is_within (std::string const & haystack, std::string needle)
+{
+ while (1) {
+ if (equivalent_paths (haystack, needle)) {
+ return true;
+ }
+
+ needle = Glib::path_get_dirname (needle);
+ if (needle == "." || needle == "/") {
+ break;
+ }
+ }
+
+ return false;
+}
+
+bool
+exists_and_writable (const std::string & p)
+{
+ /* writable() really reflects the whole folder, but if for any
+ reason the session state file can't be written to, still
+ make us unwritable.
+ */
+
+ struct stat statbuf;
+
+ if (g_stat (p.c_str(), &statbuf) != 0) {
+ /* doesn't exist - not writable */
+ return false;
+ } else {
+ if (!(statbuf.st_mode & S_IWUSR)) {
+ /* exists and is not writable */
+ return false;
+ }
+ /* filesystem may be mounted read-only, so even though file
+ * permissions permit access, the mount status does not.
+ * access(2) seems like the best test for this.
+ */
+ if (g_access (p.c_str(), W_OK) != 0) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
} // namespace PBD