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#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 += ' ';
NinjaArg::Type argType = arg.type;
if(!arg.arg.empty() && arg.arg[0] == '$')
argType = NinjaArg::Type::RAW;
switch(argType)
{
case NinjaArg::Type::VALUE:
{
result += '\"' + arg.arg + '\"';
break;
}
case NinjaArg::Type::VARIABLE:
{
result += '$' + arg.arg;
break;
}
case NinjaArg::Type::RAW:
{
result += arg.arg;
break;
}
}
}
return result;
}
static bool isAlpha(char c)
{
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
}
static bool isNum(char c)
{
return c >= '0' && c <= '9';
}
static bool isAlnum(char c)
{
return isAlpha(c) || isNum(c);
}
static bool isValidName(const std::string &name)
{
if(name.empty())
return false;
if(name.size() > 100)
return false;
if(!isAlpha(name[0]) && name[0] != '_')
return false;
for(int i = 1; i < name.size(); ++i)
{
if(!isAlnum(name[i]) && name[i] != '_')
return false;
}
return true;
}
static std::string escape(const std::string &str)
{
std::string result;
result.reserve(str.size());
for(char c : str)
{
if(c == '\n')
result += "$\n";
else if(c == '$')
result += "$$";
else if(c == ' ')
result += "$ ";
else if(c == ':')
result += "$:";
else
result += c;
}
return result;
}
static std::string combine_escape(const std::vector<std::string> &strs)
{
std::string result;
for(const std::string &str : strs)
{
if(!result.empty())
result += ' ';
result += escape(str);
}
return result;
}
NinjaVariable::NinjaVariable(const std::string &_name) :
name(_name)
{
if(!isValidName(name))
throw NinjaException(NinjaError::INVALID_NAME, "Invalid variable name, has to match [a-zA-Z_]{1}[a-zA-Z0-9_]{0,98}");
}
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;
}
for(NinjaBuild *build : builds)
{
delete build;
}
}
NinjaBuild* NinjaRule::build(const std::string &in, const std::string &out, const std::vector<ninja::NinjaArgValue> &additionalArgs, const std::vector<NinjaBuild*> &dependsOnBuilds)
{
return buildFile->build(this, in, out, additionalArgs, dependsOnBuilds);
}
NinjaBuild* NinjaRule::build(const std::vector<std::string> &in, const std::string &out, const std::vector<ninja::NinjaArgValue> &additionalArgs, const std::vector<NinjaBuild*> &dependsOnBuilds)
{
return buildFile->build(this, in, out, additionalArgs, dependsOnBuilds);
}
void NinjaBuildFile::defineGlobalVariable(const std::string &name, const std::string &value)
{
if(!isValidName(name))
throw NinjaException(NinjaError::INVALID_NAME, "Invalid global variable name, has to match [a-zA-Z_]{1}[a-zA-Z0-9_]{0,98}");
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)
{
if(!isValidName(name))
throw NinjaException(NinjaError::INVALID_NAME, "Invalid rule name, has to match [a-zA-Z_]{1}[a-zA-Z0-9_]{0,98}");
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;
}
NinjaBuild* NinjaBuildFile::build(const NinjaRule *rule, const std::string &in, const std::string &out, const std::vector<ninja::NinjaArgValue> &additionalArgs, const std::vector<NinjaBuild*> &dependsOnBuilds)
{
NinjaBuild *build = new NinjaBuild { rule, { in }, escape(out), additionalArgs, dependsOnBuilds };
builds.push_back(build);
return build;
}
NinjaBuild* NinjaBuildFile::build(const NinjaRule *rule, const std::vector<std::string> &in, const std::string &out, const std::vector<ninja::NinjaArgValue> &additionalArgs, const std::vector<NinjaBuild*> &dependsOnBuilds)
{
NinjaBuild *build = new NinjaBuild { rule, in, escape(out), additionalArgs, dependsOnBuilds };
builds.push_back(build);
return build;
}
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;
}
if(!rule.second->deps.empty())
{
result += "\n deps = ";
result += rule.second->deps;
}
result += "\n\n";
}
result += "build always: phony\n\n";
for(const NinjaBuild *build : builds)
{
result += "build ";
result += build->out;
result += ": ";
result += build->rule->name;
result += ' ';
result += combine_escape(build->in);
if(!build->dependsOnBuilds.empty())
{
result += " ||";
for(const NinjaBuild *dependsOnBuild : build->dependsOnBuilds)
{
result += ' ' + dependsOnBuild->out;
}
}
if(build->alwaysRun)
result += " | always";
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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