From 167dea8164ff2cd26aa62055d330ca57ea62fe81 Mon Sep 17 00:00:00 2001
From: themancalledjakob <jrkb@jrkb.land>
Date: Sun, 19 Jan 2025 14:19:59 +0100
Subject: [PATCH] allow replacements (upper/lower)

---
 butils.py | 48 ++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 38 insertions(+), 10 deletions(-)

diff --git a/butils.py b/butils.py
index e29358d..81bcf41 100644
--- a/butils.py
+++ b/butils.py
@@ -674,11 +674,23 @@ def get_glyph_height(glyph_obj):
             return abs(c.bound_box[0][1] - c.bound_box[3][1])
     return abs(glyph_obj.bound_box[0][1] - glyph_obj.bound_box[3][1])
 
-def prepare_text(font_name, face_name, text):
+def prepare_text(font_name, face_name, text, allow_replacement=True):
     loaded, missing, loadable, files = Font.test_glyphs_availability(
             font_name,
             face_name,
             text)
+    # possibly replace upper and lower case letters with each other
+    if len(missing) > 0 and allow_replacement:
+        replacement_search = ""
+        for m in missing:
+            if m.islower():
+                replacement_search += m.upper()
+            if m.isupper():
+                replacement_search += m.lower()
+        r = Font.test_availability(font_name, face_name, replacement_search)
+        loadable += r["maybe"]
+        # not update (loaded, missing, files), we only use loadable/maybe later
+
     if len(loadable) > 0:
         for filepath in files:
             load_font_from_filepath(filepath, loadable, font_name, face_name)
@@ -770,9 +782,6 @@ def set_text_on_curve(text_properties, reset_timeout_s=0.1, reset_depsgraph_n=4)
         if c == '\\':
             is_command = True
             continue
-        if c == ' ':
-            advance = advance + scalor
-            continue
         is_newline = False
         if is_command:
             if c == 'n':
@@ -787,14 +796,33 @@ def set_text_on_curve(text_properties, reset_timeout_s=0.1, reset_depsgraph_n=4)
             is_command = False
         glyph_id = c
 
-        glyph = Font.get_glyph(text_properties.font_name,
+        glyph_tmp = Font.get_glyph(text_properties.font_name,
                                text_properties.face_name,
-                               glyph_id).original
+                               glyph_id)
+        if glyph_tmp == None:
+            space_width = Font.is_space(glyph_id)
+            if space_width != False:
+                advance = advance + space_width * text_properties.font_size
+                continue
 
-        if glyph == None:
-            # self.report({'ERROR'}, f"Glyph not found for {font_name} {face_name} {glyph_id}")
-            print(f"Glyph not found for {text_properties.font_name} {text_properties.face_name} {glyph_id}")
-            continue
+            message=f"Glyph not found for font_name='{text_properties.font_name}' face_name='{text_properties.face_name}' glyph_id='{glyph_id}'"
+            replaced = False
+            if glyph_id.isupper() or glyph_id.islower():
+                possible_replacement = glyph_id.lower() if glyph_id.isupper() else glyph_id.upper()
+                glyph_tmp = Font.get_glyph(text_properties.font_name,
+                                       text_properties.face_name,
+                                       possible_replacement)
+                if glyph_tmp != None:
+                    message = message + f" (replaced with '{possible_replacement}')"
+                    replaced = True
+            
+            ShowMessageBox(title="Glyph replaced" if replaced else "Glyph missing",
+                           icon='INFO' if replaced else 'ERROR',
+                           message=message,
+                           prevent_repeat=True)
+            if replaced == False:
+                continue
+        glyph = glyph_tmp.original
 
         ob = None
         obg = None