Add the full source of BambuStudio

using version 1.0.10

src/libslic3r/Format/STEP.hpp

@@ -0,0 +1,42 @@
+#ifndef slic3r_Format_STEP_hpp_
+#define slic3r_Format_STEP_hpp_
+
+namespace Slic3r {
+
+class TriangleMesh;
+class ModelObject;
+
+typedef std::function<void(int load_stage, int current, int total, bool& cancel)> ImportStepProgressFn;
+typedef std::function<void(bool isUtf8)> StepIsUtf8Fn;
+
+//BBS: Load an step file into a provided model.
+extern bool load_step(const char *path, Model *model, ImportStepProgressFn proFn = nullptr, StepIsUtf8Fn isUtf8Fn = nullptr);
+
+//BBS: Used to detect what kind of encoded type is used in name field of step
+// If is encoded in UTF8, the file don't need to be handled, then return the original path directly.
+// If is encoded in GBK, then translate to UTF8 and generate a new temporary step file.
+// If is encoded in Other type, we can't handled, then treat as UTF8. In this case, the name is garbage
+// characters.
+// By preprocessing, at least we can avoid garbage characters if the name field is encoded by GBK.
+class StepPreProcessor {
+    enum class EncodedType : unsigned char
+    {
+        UTF8,
+        GBK,
+        OTHER
+    };
+
+public:
+    bool preprocess(const char* path, std::string &output_path);
+    static bool isUtf8File(const char* path);
+private:
+    static bool isUtf8(const std::string str);
+    static bool isGBK(const std::string str);
+    static int preNum(const unsigned char byte);
+    //BBS: default is UTF8 for most step file.
+    EncodedType m_encode_type = EncodedType::UTF8;
+};
+
+}; // namespace Slic3r
+
+#endif /* slic3r_Format_STEP_hpp_ */