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/*
** Copyright (C) 2022-2023 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
**
** This program 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; either version 3, or (at your option) any
** later version.
**
** 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, write to the Free Software Foundation,
** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**
*/
#include "config.h"
#include "mu-script.hh"
#include "mu/mu-options.hh"
#include "utils/mu-utils.hh"
#include "utils/mu-option.hh"
#include <fstream>
#include <iostream>
#ifdef BUILD_GUILE
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wredundant-decls"
#include <libguile.h>
#pragma GCC diagnostic pop
#endif /*BUILD_GUILE*/
using namespace Mu;
static std::string
get_name(const std::string& path)
{
auto pos = path.find_last_of("/");
if (pos == std::string::npos)
return path;
auto name = path.substr(pos + 1);
pos = name.find_last_of(".");
if (pos == std::string::npos)
return name;
return name.substr(0, pos);
}
static Mu::Option<Mu::ScriptInfo>
get_info(std::string&& path, const std::string& prefix)
{
std::ifstream file{path};
if (!file.is_open()) {
mu_warning ("failed to open {}", path);
return Nothing;
}
Mu::ScriptInfo info{};
info.path = path;
info.name = get_name(path);
std::string line;
while (std::getline(file, line)) {
if (line.find(prefix) != 0)
continue;
line = line.substr(prefix.length());
if (info.oneline.empty())
info.oneline = line;
else
info.description += line;
}
// std::cerr << "ONELINE: " << info.oneline << '\n';
// std::cerr << "DESCR : " << info.description << '\n';
return info;
}
static void
script_infos_in_dir(const std::string& scriptdir, Mu::ScriptInfos& infos)
{
DIR *dir = opendir(scriptdir.c_str());
if (!dir) {
mu_debug("failed to open '{}': {}", scriptdir,
g_strerror(errno));
return;
}
const std::string ext{".scm"};
struct dirent *dentry;
while ((dentry = readdir(dir))) {
if (!g_str_has_suffix(dentry->d_name, ext.c_str()))
continue;
auto&& info = get_info(scriptdir + "/" + dentry->d_name, ";; INFO: ");
if (!info)
continue;
infos.emplace_back(std::move(*info));
}
closedir(dir); /* ignore error checking... */
}
Mu::ScriptInfos
Mu::script_infos(const Mu::ScriptPaths& paths)
{
/* create a list of names, paths */
ScriptInfos infos;
for (auto&& dir: paths) {
script_infos_in_dir(dir, infos);
}
std::sort(infos.begin(), infos.end(), [](auto&& i1, auto&& i2) {
return i1.name < i2.name;
});
return infos;
}
Result<void>
Mu::run_script(const std::string& path,
const std::vector<std::string>& args)
{
#ifndef BUILD_GUILE
return Err(Error::Code::Script,
"guile script support is not available");
#else
std::string mainargs;
for (auto&& arg: args)
mainargs += mu_format("{}\"{}\"", mainargs.empty() ? "" : " ", arg);
auto expr = mu_format("(main '(\"{}\" {}))", get_name(path), mainargs);
std::vector<const char*> argv = {
GUILE_BINARY,
"-l", path.c_str(),
"-c", expr.c_str(),
};
/* does not return */
scm_boot_guile(argv.size(), const_cast<char**>(argv.data()),
[](void *closure, int argc, char **argv) {
scm_shell(argc, argv);
}, NULL);
return Ok();
#endif /*BUILD_GUILE*/
}
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