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/*
* Anope IRC Services
*
* Copyright (C) 2010-2016 Anope Team <team@anope.org>
*
* This file is part of Anope. Anope is free software; you can
* redistribute it and/or modify it under the terms of the GNU
* General Public License as published by the Free Software
* Foundation, version 2.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see see <http://www.gnu.org/licenses/>.
*/
#include <cstdlib>
#include <iostream>
#include <fstream>
#include <sstream>
#include <map>
static std::string get_git_hash(const std::string &git_dir)
{
std::fstream fd;
std::string filebuf;
fd.open((git_dir + "/HEAD").c_str(), std::ios::in);
if (!fd.is_open())
return "";
if (!getline(fd, filebuf) || filebuf.find("ref: ") != 0)
{
fd.close();
return "";
}
fd.close();
filebuf = filebuf.substr(5);
fd.open((git_dir + "/" + filebuf).c_str(), std::ios::in);
if (!fd.is_open())
return "";
if (!getline(fd, filebuf))
{
fd.close();
return "";
}
fd.close();
return "g" + filebuf.substr(0, 7);
}
static bool read_version_sh(const std::string &version_sh, std::map<std::string, std::string> &versions)
{
std::fstream fd(version_sh.c_str(), std::ios::in);
if (!fd.is_open())
{
std::cerr << "Error: Unable to open src/version.sh for reading: " << version_sh << std::endl;
return false;
}
std::string filebuf;
while (getline(fd, filebuf))
{
if (!filebuf.find("VERSION_"))
{
size_t eq = filebuf.find('=');
std::string type = filebuf.substr(0, eq);
std::string value = filebuf.substr(eq + 1);
versions[type] = value;
}
}
fd.close();
return true;
}
static bool write_build_h(const std::string &buildh, const std::string &git_version)
{
std::fstream fd(buildh.c_str(), std::ios::in);
std::string existing_version;
if (fd.is_open())
{
for (std::string filebuf; getline(fd, filebuf);)
{
if (!filebuf.find("#define VERSION_GIT"))
{
std::size_t q = filebuf.find('"');
if (q == std::string::npos)
break;
std::size_t q2 = filebuf.find('"', q + 1);
if (q2 == std::string::npos)
break;
existing_version = filebuf.substr(q + 1, q2 - q - 1);
}
}
fd.close();
}
if (existing_version == git_version)
return true;
fd.clear();
fd.open(buildh.c_str(), std::ios::out);
if (!fd.is_open())
{
std::cerr << "Error: Unable to open build.h for writing: " << buildh << std::endl;
return false;
}
fd << "/* This file is automatically generated by version.cpp - do not edit it! */" << std::endl;
if (!git_version.empty())
fd << "#define VERSION_GIT \"" << git_version << "\"" << std::endl;
fd.close();
return true;
}
static void read_version_h(const std::string &versionh, std::map<std::string, std::string> &versions)
{
std::fstream fd(versionh.c_str(), std::ios::in);
if (!fd.is_open())
return;
for (std::string filebuf; getline(fd, filebuf);)
{
if (!filebuf.find("#define VERSION_"))
{
size_t space = filebuf.substr(8).find(' ');
std::string name = filebuf.substr(8).substr(0, space),
version = filebuf.substr(8).substr(space + 1);
versions[name] = version;
}
}
fd.close();
}
static bool write_version_h(const std::string &versionh, const std::map<std::string, std::string> &versions)
{
std::fstream fd(versionh.c_str(), std::ios::out);
if (!fd.is_open())
return false;
for (std::map<std::string, std::string>::const_iterator it = versions.begin(); it != versions.end(); ++it)
{
fd << "#define " << it->first << " " << it->second << std::endl;
}
fd.close();
return true;
}
int main(int argc, char *argv[])
{
if (argc < 4)
{
std::cerr << "Syntax: " << argv[0] << " <base> <version.h> <build.h>" << std::endl;
return 1;
}
std::string version_sh = std::string(argv[1]) + "/src/version.sh";
std::string git_dir = std::string(argv[1]) + "/.git";
std::string versionh = argv[2];
std::string buildh = argv[3];
std::map<std::string, std::string> versions, old_versions;
if (!read_version_sh(version_sh, versions))
return -1;
std::string git_version = get_git_hash(git_dir);
if (!write_build_h(buildh, git_version))
return -1;
read_version_h(versionh, old_versions);
if (versions == old_versions)
return 0;
if (!write_version_h(versionh, versions))
return -1;
return 0;
}
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