Forced pattern , separed to > 9 extruder

src/libslic3r/PrintApply.cpp

@@ -4,6 +4,8 @@
 
 #include <boost/log/trivial.hpp>
 #include <cfloat>
+#include <limits>
+#include <sstream>
 
 namespace Slic3r {
 
@@ -1140,16 +1142,23 @@ static void append_mixed_component_extruders(const MixedFilamentManager &mixed_m
         append_unique_painted_extruder(painting_extruders, unsigned(token - '0'), num_physical_extruders);
     }
 
-    for (char token : mixed_row->manual_pattern) {
-        unsigned int extruder_id = 0;
-        if (token == '1')
-            extruder_id = mixed_row->component_a;
-        else if (token == '2')
-            extruder_id = mixed_row->component_b;
-        else if (token >= '3' && token <= '9')
-            extruder_id = unsigned(token - '0');
-
-        append_unique_painted_extruder(painting_extruders, extruder_id, num_physical_extruders);
+    const std::string normalized_pattern = MixedFilamentManager::normalize_manual_pattern(mixed_row->manual_pattern);
+    if (!normalized_pattern.empty()) {
+        std::stringstream ss(normalized_pattern);
+        std::string token;
+        while (std::getline(ss, token, ',')) {
+            if (token.empty())
+                continue;
+            try {
+                size_t consumed = 0;
+                const unsigned long value = std::stoul(token, &consumed);
+                if (consumed != token.size() || value == 0 || value > std::numeric_limits<unsigned int>::max())
+                    continue;
+                append_unique_painted_extruder(painting_extruders, static_cast<unsigned int>(value), num_physical_extruders);
+            } catch (...) {
+                continue;
+            }
+        }
     }
 }