Add auto-included fart/common.h

Rsconscript

@@ -17,7 +17,7 @@ end
 
 env do |env|
   env.add_builder(Propane)
-  env["CCFLAGS"] += %w[-Wall -O2 -std=c++23]
+  env["CCFLAGS"] += %w[-Wall -O2 -std=c++23 -include fart/common.h]
   env["CPPPATH"] += %W[src #{env.build_root}/src]
 
   env.Propane("^/src/propane.cpp", "src/fart.propane")

src/fart/ImageWriter.cpp

@@ -3,9 +3,9 @@
 #include <stdio.h>
 #include <filesystem>
 
-ImageWriter * ImageWriter::build(const std::string & fname)
+ImageWriter * ImageWriter::build(const string & fname)
 {
-    std::string ext = std::filesystem::path(fname).extension().string();
+    string ext = std::filesystem::path(fname).extension().string();
     if (ext == ".png")
     {
         return new PngImageWriter(fname);

src/fart/ImageWriter.h

@@ -6,11 +6,11 @@
 class ImageWriter
 {
 public:
-    static ImageWriter * build(const std::string & fname);
+    static ImageWriter * build(const string & fname);
     virtual ~ImageWriter() = default;
     virtual bool write(const Image & image) = 0;
 
 protected:
-    ImageWriter(const std::string & fname) : fname(fname) {}
-    std::string fname;
+    ImageWriter(const string & fname) : fname(fname) {}
+    string fname;
 };

src/fart/PngImageWriter.h

@@ -5,6 +5,6 @@
 class PngImageWriter : public ImageWriter
 {
 public:
-    PngImageWriter(const std::string & fname) : ImageWriter(fname) {}
+    PngImageWriter(const string & fname) : ImageWriter(fname) {}
     bool write(const Image & image) override;
 };

src/fart/RenderParams.h

@@ -5,8 +5,8 @@
 
 struct RenderParams
 {
-    std::string input_file;
-    std::string output_file;
+    string input_file;
+    string output_file;
     size_t width = 0u;
     size_t height = 0u;
 };

src/fart/common.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <string>
+
+using string = std::string;