From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 9 Apr 2021 13:45:34 +0000 (+0300)
Subject: Add an output file option to the command-line GLSL compiler
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=5bc24ab4e232241a9e4696787e22f2cb0c3602d8

Add an output file option to the command-line GLSL compiler
---

diff --git a/tools/glslcompiler.cpp b/tools/glslcompiler.cpp
index fdc2f1f1..7af8c80b 100644
--- a/tools/glslcompiler.cpp
+++ b/tools/glslcompiler.cpp
@@ -16,6 +16,7 @@ private:
 	bool combined;
 	Msp::GL::SL::Stage::Type stage;
 	bool dump_ast;
+	std::string out_filename;
 
 public:
 	GlslCompiler(int, char **);
@@ -47,6 +48,7 @@ GlslCompiler::GlslCompiler(int argc, char **argv):
 	getopt.add_option('s', "stage", stage_str, GetOpt::REQUIRED_ARG).set_help("Output GLSL for STAGE", "STAGE");
 	getopt.add_option('m', "module", as_module, GetOpt::NO_ARG).set_help("Compile as unspecialized module");
 	getopt.add_option('t', "target-version", target_version, GetOpt::REQUIRED_ARG).set_help("Specify target GLSL version", "VER");
+	getopt.add_option('o', "out-file", out_filename, GetOpt::REQUIRED_ARG).set_help("Write output to file instead of stdout", "FILE");
 	getopt.add_argument("source", source_fn, GetOpt::REQUIRED_ARG).set_help("GLSL file to compile");
 	getopt(argc, argv);
 
@@ -122,10 +124,18 @@ int GlslCompiler::main()
 			IO::print("%s\n", compiler.get_stage_debug(*i));
 	}
 
+	IO::Base *out = &IO::cout;
+	RefPtr<IO::File> out_file;
+	if(!out_filename.empty())
+	{
+		out_file = new IO::File(out_filename, IO::M_WRITE);
+		out = out_file.get();
+	}
+
 	if(combined)
-		IO::print("%s\n", compiler.get_combined_glsl());
+		IO::print(*out, "%s\n", compiler.get_combined_glsl());
 	else if(stage!=GL::SL::Stage::SHARED)
-		IO::print("%s\n", compiler.get_stage_glsl(stage));
+		IO::print(*out, "%s\n", compiler.get_stage_glsl(stage));
 
 	return 0;
 }