mirror of https://github.com/djcb/mu.git
163 lines
3.6 KiB
C++
163 lines
3.6 KiB
C++
/*
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** Copyright (C) 2022-2023 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify it
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** under the terms of the GNU General Public License as published by the
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** Free Software Foundation; either version 3, or (at your option) any
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** later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#include "config.h"
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#include "mu-script.hh"
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#include "mu/mu-options.hh"
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#include "utils/mu-utils.hh"
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#include "utils/mu-option.hh"
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#include <fstream>
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#include <iostream>
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#ifdef BUILD_GUILE
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wredundant-decls"
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#include <libguile.h>
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#pragma GCC diagnostic pop
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#endif /*BUILD_GUILE*/
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using namespace Mu;
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static std::string
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get_name(const std::string& path)
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{
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auto pos = path.find_last_of("/");
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if (pos == std::string::npos)
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return path;
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auto name = path.substr(pos + 1);
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pos = name.find_last_of(".");
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if (pos == std::string::npos)
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return name;
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return name.substr(0, pos);
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}
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static Mu::Option<Mu::ScriptInfo>
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get_info(std::string&& path, const std::string& prefix)
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{
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std::ifstream file{path};
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if (!file.is_open()) {
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mu_warning ("failed to open {}", path);
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return Nothing;
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}
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Mu::ScriptInfo info{};
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info.path = path;
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info.name = get_name(path);
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std::string line;
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while (std::getline(file, line)) {
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if (line.find(prefix) != 0)
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continue;
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line = line.substr(prefix.length());
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if (info.oneline.empty())
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info.oneline = line;
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else
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info.description += line;
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}
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// std::cerr << "ONELINE: " << info.oneline << '\n';
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// std::cerr << "DESCR : " << info.description << '\n';
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return info;
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}
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static void
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script_infos_in_dir(const std::string& scriptdir, Mu::ScriptInfos& infos)
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{
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DIR *dir = opendir(scriptdir.c_str());
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if (!dir) {
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mu_debug("failed to open '{}': {}", scriptdir,
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g_strerror(errno));
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return;
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}
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const std::string ext{".scm"};
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struct dirent *dentry;
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while ((dentry = readdir(dir))) {
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if (!g_str_has_suffix(dentry->d_name, ext.c_str()))
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continue;
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auto&& info = get_info(scriptdir + "/" + dentry->d_name, ";; INFO: ");
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if (!info)
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continue;
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infos.emplace_back(std::move(*info));
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}
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closedir(dir); /* ignore error checking... */
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}
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Mu::ScriptInfos
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Mu::script_infos(const Mu::ScriptPaths& paths)
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{
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/* create a list of names, paths */
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ScriptInfos infos;
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for (auto&& dir: paths) {
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script_infos_in_dir(dir, infos);
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}
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std::sort(infos.begin(), infos.end(), [](auto&& i1, auto&& i2) {
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return i1.name < i2.name;
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});
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return infos;
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}
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Result<void>
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Mu::run_script(const std::string& path,
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const std::vector<std::string>& args)
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{
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#ifndef BUILD_GUILE
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return Err(Error::Code::Script,
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"guile script support is not available");
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#else
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std::string mainargs;
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for (auto&& arg: args)
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mainargs += mu_format("{}\"{}\"", mainargs.empty() ? "" : " ", arg);
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auto expr = mu_format("(main '(\"{}\" {}))", get_name(path), mainargs);
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std::vector<const char*> argv = {
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GUILE_BINARY,
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"-l", path.c_str(),
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"-c", expr.c_str(),
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};
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/* does not return */
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scm_boot_guile(argv.size(), const_cast<char**>(argv.data()),
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[](void *closure, int argc, char **argv) {
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scm_shell(argc, argv);
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}, NULL);
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return Ok();
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#endif /*BUILD_GUILE*/
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}
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