Mono/C#: Re-structure API solution and GodotTools post-build target

Previously we had a placeholder solution called 'Managed' to benefit from
tooling while editing the a part of the C# API.
Later the bindings generator would create the final 'GodotSharp' solution
including these C# files as well as the auto-generated C# API.
Now we replaced the 'Managed' solution with the final 'GodotSharp' solution
which is no longer auto-generated, and the bindings generator only takes
care of the auto-generated C# API.
This has the following benefits:
- It's less confusing as there will no longer be two versions of the same file
(the original and a generated copy of it). Now there's only one.
- We no longer need placeholder for auto-generated API classes, like Node or
Resource. We used them for benefiting from tooling. Now we can just use the
auto-generated API itself.
- Simplifies the build system and bindings generator. Removed lot of code
that is not needed anymore.

Also added a post-build target to the GodotTools project to copy the output to
the data dir. This makes it easy to iterate when doing changes to GodotTools,
as SCons doesn't have to be executed anymore just to copy these new files.

2 files changed, 39 insertions, 0 deletions

diff --git a/modules/mono/utils/path_utils.cpp b/modules/mono/utils/path_utils.cpp
index 20863b1afe..a7bbc75e29 100644
--- a/modules/mono/utils/path_utils.cpp
+++ b/modules/mono/utils/path_utils.cpp
@@ -170,4 +170,41 @@ String join(const String &p_a, const String &p_b, const String &p_c, const Strin
 	return path::join(path::join(path::join(p_a, p_b), p_c), p_d);
 }
 
+String relative_to_impl(const String &p_path, const String &p_relative_to) {
+	// This function assumes arguments are normalized and absolute paths
+
+	if (p_path.begins_with(p_relative_to)) {
+		return p_path.substr(p_relative_to.length() + 1);
+	} else {
+		String base_dir = p_relative_to.get_base_dir();
+
+		if (base_dir.length() <= 2 && (base_dir.empty() || base_dir.ends_with(":")))
+			return p_path;
+
+		return String("..").plus_file(relative_to_impl(p_path, base_dir));
+	}
+}
+
+#ifdef WINDOWS_ENABLED
+String get_drive_letter(const String &p_norm_path) {
+	int idx = p_norm_path.find(":/");
+	if (idx != -1 && idx < p_norm_path.find("/"))
+		return p_norm_path.substr(0, idx + 1);
+	return String();
+}
+#endif
+
+String relative_to(const String &p_path, const String &p_relative_to) {
+	String relative_to_abs_norm = abspath(p_relative_to);
+	String path_abs_norm = abspath(p_path);
+
+#ifdef WINDOWS_ENABLED
+	if (get_drive_letter(relative_to_abs_norm) != get_drive_letter(path_abs_norm)) {
+		return path_abs_norm;
+	}
+#endif
+
+	return relative_to_impl(path_abs_norm, relative_to_abs_norm);
+}
+
 } // namespace path
diff --git a/modules/mono/utils/path_utils.h b/modules/mono/utils/path_utils.h
index ca25bc09f7..7e868d2b5a 100644
--- a/modules/mono/utils/path_utils.h
+++ b/modules/mono/utils/path_utils.h
@@ -57,6 +57,8 @@ String abspath(const String &p_path);
  */
 String realpath(const String &p_path);
 
+String relative_to(const String &p_path, const String &p_relative_to);
+
 } // namespace path
 
 #endif // PATH_UTILS_H