ysfx: add api for finding imported files

exports/ysfx.txt

@@ -29,6 +29,8 @@ ysfx_get_input_name
 ysfx_get_output_name
 ysfx_wants_meters
 ysfx_get_gfx_dim
+ysfx_resolve_path_and_allocate
+ysfx_free_resolved_path
 ysfx_has_section
 ysfx_slider_exists
 ysfx_slider_get_name

include/ysfx.h

@@ -153,6 +153,11 @@ YSFX_API const char *ysfx_get_output_name(ysfx_t *fx, uint32_t index);
 YSFX_API bool ysfx_wants_meters(ysfx_t *fx);
 // get requested dimensions of the graphics area; 0 means host should decide
 YSFX_API bool ysfx_get_gfx_dim(ysfx_t *fx, uint32_t dim[2]);
+// resolve an import path; note that this returns a char* string that needs to be freed with ysfx_free_resolved_path after use
+YSFX_API char *ysfx_resolve_path_and_allocate(ysfx_t* fx, const char* name, const char* origin);
+// free a path returned by ysfx_resolve_path_and_allocate
+YSFX_API void ysfx_free_resolved_path(char *path);
+
 
 typedef enum ysfx_section_type_e {
     ysfx_section_init = 1,
@@ -246,7 +251,6 @@ YSFX_API ysfx_real ysfx_normalized_to_ysfx_value(ysfx_real value, const ysfx_sli
 // convert normalized slider value to ysfx value taking into account curve shape
 YSFX_API ysfx_real ysfx_ysfx_value_to_normalized(ysfx_real value, const ysfx_slider_curve_t *curve);
 
-
 typedef enum ysfx_compile_option_e {
     // skip compiling the @serialize section
     ysfx_compile_no_serialize = 1 << 0,

sources/ysfx.cpp

@@ -658,6 +658,29 @@ const char *ysfx_get_file_path(ysfx_t *fx)
     return fx->source.main_file_path.c_str();
 }
 
+char *ysfx_resolve_path_and_allocate(ysfx_t* fx, const char* name, const char* origin)
+{
+    if (!fx) return nullptr;
+    std::string result = ysfx_resolve_import_path(fx, std::string(name), std::string{origin});
+
+    if (result.empty()) return nullptr;
+
+    char* cPath = static_cast<char*>(malloc(result.size() + 1));
+    if (cPath) {
+        strcpy(cPath, result.c_str());
+    } else {
+        return nullptr;
+    }
+
+    return cPath;
+}
+
+void ysfx_free_resolved_path(char *path)
+{
+    free(path);
+    path = nullptr;
+}
+
 const char *ysfx_get_author(ysfx_t *fx)
 {
     ysfx_source_unit_t *main = fx->source.main.get();