From 0941f0600a26b85b49ab37ab2068a42a4962359c Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sat, 8 Mar 2025 16:59:02 +0100
Subject: Add Fl_Darwin_System_Driver::filename_relative()

This removes the last instance in FLTK of use of #if __APPLE__ instead of the driver mechanism.
---
 src/filename_absolute.cxx | 28 +++++++++++++++++-----------
 1 file changed, 17 insertions(+), 11 deletions(-)

(limited to 'src/filename_absolute.cxx')

diff --git a/src/filename_absolute.cxx b/src/filename_absolute.cxx
index f70d59873..b134c48c0 100644
--- a/src/filename_absolute.cxx
+++ b/src/filename_absolute.cxx
@@ -201,7 +201,12 @@ int fl_filename_relative(char *to, int tolen, const char *from, const char *base
  \{
  */
 
-int Fl_System_Driver::filename_relative(char *to, int tolen, const char *dest_dir, const char *base_dir)
+int Fl_System_Driver::filename_relative(char *to, int tolen, const char *dest_dir, const char *base_dir) {
+  return filename_relative_(to, tolen, dest_dir, base_dir, true);
+}
+
+
+int Fl_System_Driver::filename_relative_(char *to, int tolen, const char *dest_dir, const char *base_dir, bool case_sensitive)
 {
   // Find the relative path from base_dir to dest_dir.
   // Both paths must be absolute and well formed (contain no /../ and /./ segments).
@@ -223,16 +228,17 @@ int Fl_System_Driver::filename_relative(char *to, int tolen, const char *dest_di
 
   // compare both path names until we find a difference
   for (;;) {
-#ifndef __APPLE__ // case sensitive
-    base_i++;
-    dest_i++;
-    char b = *base_i, d = *dest_i;
-#else // case insensitive
-    base_i += fl_utf8len1(*base_i);
-    int b = fl_tolower(fl_utf8decode(base_i, NULL, NULL));
-    dest_i += fl_utf8len1(*dest_i);
-    int d = fl_tolower(fl_utf8decode(dest_i, NULL, NULL));
-#endif
+    int b, d;
+    if (case_sensitive) { // case sensitive
+      base_i++;
+      dest_i++;
+      b = *base_i, d = *dest_i;
+    } else { // case insensitive
+      base_i += fl_utf8len1(*base_i);
+      b = fl_tolower(fl_utf8decode(base_i, NULL, NULL));
+      dest_i += fl_utf8len1(*dest_i);
+      d = fl_tolower(fl_utf8decode(dest_i, NULL, NULL));
+    }
     int b0 = (b==0) || (isdirsep(b));
     int d0 = (d==0) || (isdirsep(d));
     if (b0 && d0) {
-- 
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