+// Starting from Cygwin 1.7, new APIs for path conversions were introduced.
+// The old ones are now deprecated, so avoid them if we detect a modern Cygwin.
+
+#if CYGWIN_VERSION_DLL_MAJOR >= 1007
+
+enum PathStyle {
+ posix = CCP_WIN_A_TO_POSIX | CCP_RELATIVE,
+ windows = CCP_POSIX_TO_WIN_A | CCP_RELATIVE
+};
+
+
+/// Convert a path to or from posix style.
+/// \p p is encoded in local 8bit encoding or utf8.
+/// The result is returned in the same encoding as \p p.
+string convert_path(string const & p, PathStyle const & target)
+{
+ if ((target == posix && is_posix_path(p)) ||
+ (target == windows && is_windows_path(p)))
+ return p;
+
+ char path_buf[PATH_MAX];
+
+ // cygwin_conv_path does not care about the encoding.
+ if (cygwin_conv_path(target, p.c_str(), path_buf, sizeof(path_buf))) {
+ lyxerr << "LyX: Cannot convert path: " << p << endl;
+ return subst(p, '\\', '/');
+ }
+ return subst(path_buf, '\\', '/');
+}
+
+
+/// Convert a path list to or from posix style.
+/// \p p is encoded in local 8bit encoding or utf8.
+/// The result is returned in the same encoding as \p p.
+string convert_path_list(string const & p, PathStyle const & target)
+{
+ if (p.empty())
+ return p;
+
+ char const * const pc = p.c_str();
+ PathStyle const actual = cygwin_posix_path_list_p(pc) ? posix : windows;
+
+ if (target != actual) {
+ int const size = cygwin_conv_path_list(target, pc, NULL, 0);
+ char * ptr = new char[size];
+ if (ptr && cygwin_conv_path_list(target, pc, ptr, size) == 0) {
+ string const path_list = subst(ptr, '\\', '/');
+ delete [] ptr;
+ return path_list;
+ } else
+ lyxerr << "LyX: Cannot convert path list: " << p << endl;
+ }
+ return subst(p, '\\', '/');
+}
+
+#else
+