From 194a5708f3a42c6254cf99d8e03b5c8c60224feb Mon Sep 17 00:00:00 2001
From: dec05eba <0xdec05eba@gmail.com>
Date: Thu, 20 Sep 2018 06:37:59 +0200
Subject: Initial commit, works to create ninja file

---
 src/Ninja.cpp | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/Ninja.cpp

(limited to 'src')

diff --git a/src/Ninja.cpp b/src/Ninja.cpp
new file mode 100644
index 0000000..7b3212e
--- /dev/null
+++ b/src/Ninja.cpp
@@ -0,0 +1,121 @@
+#include "../include/ninja/Ninja.hpp"
+#include <cassert>
+
+namespace ninja
+{
+    static std::string joinArgs(const std::vector<NinjaArg> &args)
+    {
+        std::string result;
+        for(const NinjaArg &arg : args)
+        {
+            if(!result.empty())
+                result += ' ';
+            result += '\'';
+            if(arg.type == NinjaArg::Type::VARIABLE)
+                result += "$";
+            result += arg.arg;
+            result += '\'';
+        }
+        return result;
+    }
+
+    NinjaRule::NinjaRule(NinjaBuildFile *_buildFile, const std::string &_name, const std::string &_command) : 
+        buildFile(_buildFile),
+        name(_name),
+        command(_command)
+    {
+        assert(buildFile);
+    }
+
+    NinjaBuildFile::~NinjaBuildFile()
+    {
+        for(auto &rule : rules)
+        {
+            delete rule.second;
+        }
+    }
+
+    void NinjaRule::build(const std::string &in, const std::string &out, const std::vector<ninja::NinjaArgValue> &additionalArgs)
+    {
+        buildFile->build(this, in, out, additionalArgs);
+    }
+
+    void NinjaBuildFile::defineGlobalVariable(const std::string &name, const std::string &value)
+    {
+        auto it = globalVariables.find(name);
+        if(it != globalVariables.end())
+            throw NinjaException(NinjaError::VARIABLE_ALREADY_DEFINED, "Global variable already defined: " + name);
+        globalVariables[name] = value;
+    }
+
+    NinjaRule* NinjaBuildFile::createRule(const std::string &name, const std::vector<NinjaArg> &commandArgs)
+    {
+        auto it = rules.find(name);
+        if(it != rules.end())
+            throw NinjaException(NinjaError::RULE_ALREADY_DEFINED, "Rule already defined: " + name);
+
+        NinjaRule *rule = new NinjaRule(this, name, joinArgs(commandArgs));
+        rules[name] = rule;
+        return rule;
+    }
+
+    void NinjaBuildFile::build(const NinjaRule *rule, const std::string &in, const std::string &out, const std::vector<ninja::NinjaArgValue> &additionalArgs)
+    {
+        for(const NinjaBuild &build : builds)
+        {
+            if(build.rule == rule)
+                throw NinjaException(NinjaError::RULE_AREADY_BUILT, "Rule already built: " + rule->name);
+        }
+        builds.push_back({ rule, in, out, additionalArgs });
+    }
+
+    std::string NinjaBuildFile::generate() const
+    {
+        std::string result;
+        for(const auto &globalVar : globalVariables)
+        {
+            result += globalVar.first;
+            result += " = ";
+            result += globalVar.second;
+            result += '\n';
+        }
+
+        if(!globalVariables.empty())
+            result += '\n';
+        
+        for(const auto &rule : rules)
+        {
+            result += "rule ";
+            result += rule.first;
+            result += "\n  command = ";
+            result += rule.second->command;
+            if(!rule.second->depFile.empty())
+            {
+                result += "\n  depfile = ";
+                result += rule.second->depFile;
+            }
+            result += "\n\n";
+        }
+
+        // TODO: enclose all names with quotes to escape whitespace?
+        for(const NinjaBuild &build : builds)
+        {
+            result += "build ";
+            result += build.out;
+            result += ": ";
+            result += build.rule->name;
+            result += ' ';
+            result += build.in;
+            for(const NinjaArgValue &additionalArg : build.additionalArgs)
+            {
+                result += "\n  ";
+                result += additionalArg.arg.name;
+                result += " = ";
+                result += additionalArg.value;
+
+            }
+            result += "\n\n";
+        }
+        return result;
+    }
+}
-- 
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