From d9090882cae78695765204a3e1b60c6a9bf27977 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sat, 9 Dec 2017 02:43:02 +0100
Subject: Added ninja backend, very simple project works

---
 backend/ninja/Ninja.cpp | 95 +++++++++++++++++++++++++++++++++++++++++++++++++
 backend/ninja/Ninja.hpp | 21 +++++++++++
 2 files changed, 116 insertions(+)
 create mode 100644 backend/ninja/Ninja.cpp
 create mode 100644 backend/ninja/Ninja.hpp

(limited to 'backend')

diff --git a/backend/ninja/Ninja.cpp b/backend/ninja/Ninja.cpp
new file mode 100644
index 0000000..7006d30
--- /dev/null
+++ b/backend/ninja/Ninja.cpp
@@ -0,0 +1,95 @@
+#include <cstring>
+#include "Ninja.hpp"
+#include "../../include/FileUtil.hpp"
+
+using namespace std;
+
+namespace backend
+{
+    string join(const vector<string> &list, const char *joinStr)
+    {
+        if(list.empty()) return "";
+        string result;
+        long stringSize = 0;
+        long joinStrLen = strlen(joinStr);
+        int i = 0;
+        for(const string &str : list)
+        {
+            stringSize += str.size();
+            if(!str.empty() && i > 0)
+                stringSize += joinStrLen;
+            ++i;
+        }
+
+        result.reserve(stringSize);
+
+        i = 0;
+        for(const string &str : list)
+        {
+            if(i > 0);
+                result += joinStr;
+            result += str;
+            ++i;
+        }
+
+        return move(result);
+    }
+
+    void Ninja::addSourceFile(const char *filepath)
+    {
+        if(filepath && !containsSourceFile(filepath))
+            sourceFiles.emplace_back(filepath);
+    }
+
+    bool Ninja::containsSourceFile(const char *filepath) const
+    {
+        for(const string &sourceFile : sourceFiles)
+        {
+            if(sourceFile == filepath)
+                return true;
+        }
+        return false;
+    }
+
+    void Ninja::build(const std::string &packageName, const char *savePath)
+    {
+        if(sourceFiles.empty()) return;
+        printf("Package name: %s\n", packageName.c_str());
+
+        string result;
+        result.reserve(16384);
+
+        result += "cflags = -Wall -Werror\n\n";
+
+        result += "rule cpp_COMPILER\n";
+        result += "  command = ccache c++ $ARGS -c $in -o $out\n\n";
+
+        result += "rule cpp_LINKER\n";
+        result += "  command = ccache c++ $ARGS -o $out $in $LINK_ARGS $aliasing\n\n";
+
+        vector<string> objectNames;
+        for(const string &sourceFile : sourceFiles)
+        {
+            //string sourceFileEncoded = sourceFile;
+            //replace(sourceFileEncoded, '/', '@');
+            string objectName = packageName + "@exe/" + sourceFile + ".o";
+            result += "build ";
+            result += objectName;
+            result += ": cpp_COMPILER ../../";
+            result += sourceFile;
+            result += "\n";
+            result += "  ARGS = '-I" + packageName + "@exe' '-I.' '-I..' '-fdiagnostics-color=always' '-pipe' '-D_FILE_OFFSET_BITS=64' '-Wall' '-Winvalid-pch' '-Wnon-virtual-dtor' '-O0' '-g'\n\n";
+            objectNames.emplace_back(objectName);
+        }
+
+        result += "build ";
+        result += packageName;
+        result += ": cpp_LINKER ";
+        result += join(objectNames, " ");
+        result += "\n";
+        result += "  LINK_ARGS = '-Wl,--no-undefined' '-Wl,--as-needed'\n\n";
+
+        sibs::fileOverwrite(savePath, sibs::StringView(result.data(), result.size()));
+        printf("Created ninja build file: %s\n", savePath);
+    }
+}
\ No newline at end of file
diff --git a/backend/ninja/Ninja.hpp b/backend/ninja/Ninja.hpp
new file mode 100644
index 0000000..ad71c80
--- /dev/null
+++ b/backend/ninja/Ninja.hpp
@@ -0,0 +1,21 @@
+#ifndef BACKEND_NINJA_HPP
+#define BACKEND_NINJA_HPP
+
+#include <vector>
+#include <string>
+
+namespace backend
+{
+    class Ninja
+    {
+    public:
+        void addSourceFile(const char *filepath);
+        void build(const std::string &packageName, const char *savePath);
+    private:
+        bool containsSourceFile(const char *filepath) const;
+    private:
+        std::vector<std::string> sourceFiles;
+    };
+}
+
+#endif //BACKEND_NINJA_HPP
-- 
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