🛠️🐜 Antkeeper superbuild with dependencies included
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528 lines
15 KiB
528 lines
15 KiB
/**
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* OpenAL cross platform audio library
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* Copyright (C) 1999-2007 by authors.
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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* Or go to http://www.gnu.org/copyleft/lgpl.html
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*/
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#include "config.h"
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#include "alconfig.h"
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#include <cstdlib>
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#include <cctype>
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#include <cstring>
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#ifdef _WIN32
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#include <windows.h>
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#include <shlobj.h>
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#endif
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#ifdef __APPLE__
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#include <CoreFoundation/CoreFoundation.h>
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#endif
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#include <algorithm>
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#include <cstdio>
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#include <string>
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#include <utility>
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#include "alfstream.h"
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#include "alstring.h"
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#include "core/helpers.h"
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#include "core/logging.h"
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#include "strutils.h"
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#include "vector.h"
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namespace {
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struct ConfigEntry {
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std::string key;
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std::string value;
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};
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al::vector<ConfigEntry> ConfOpts;
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std::string &lstrip(std::string &line)
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{
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size_t pos{0};
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while(pos < line.length() && std::isspace(line[pos]))
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++pos;
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line.erase(0, pos);
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return line;
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}
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bool readline(std::istream &f, std::string &output)
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{
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while(f.good() && f.peek() == '\n')
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f.ignore();
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return std::getline(f, output) && !output.empty();
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}
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std::string expdup(const char *str)
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{
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std::string output;
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std::string envval;
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while(*str != '\0')
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{
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const char *addstr;
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size_t addstrlen;
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if(str[0] != '$')
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{
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const char *next = std::strchr(str, '$');
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addstr = str;
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addstrlen = next ? static_cast<size_t>(next-str) : std::strlen(str);
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str += addstrlen;
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}
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else
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{
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str++;
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if(*str == '$')
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{
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const char *next = std::strchr(str+1, '$');
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addstr = str;
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addstrlen = next ? static_cast<size_t>(next-str) : std::strlen(str);
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str += addstrlen;
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}
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else
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{
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const bool hasbraces{(*str == '{')};
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if(hasbraces) str++;
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const char *envstart = str;
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while(std::isalnum(*str) || *str == '_')
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++str;
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if(hasbraces && *str != '}')
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continue;
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const std::string envname{envstart, str};
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if(hasbraces) str++;
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envval = al::getenv(envname.c_str()).value_or(std::string{});
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addstr = envval.data();
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addstrlen = envval.length();
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}
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}
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if(addstrlen == 0)
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continue;
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output.append(addstr, addstrlen);
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}
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return output;
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}
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void LoadConfigFromFile(std::istream &f)
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{
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std::string curSection;
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std::string buffer;
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while(readline(f, buffer))
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{
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if(lstrip(buffer).empty())
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continue;
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if(buffer[0] == '[')
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{
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char *line{&buffer[0]};
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char *section = line+1;
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char *endsection;
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endsection = std::strchr(section, ']');
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if(!endsection || section == endsection)
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{
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ERR(" config parse error: bad line \"%s\"\n", line);
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continue;
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}
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if(endsection[1] != 0)
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{
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char *end = endsection+1;
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while(std::isspace(*end))
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++end;
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if(*end != 0 && *end != '#')
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{
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ERR(" config parse error: bad line \"%s\"\n", line);
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continue;
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}
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}
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*endsection = 0;
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curSection.clear();
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if(al::strcasecmp(section, "general") != 0)
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{
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do {
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char *nextp = std::strchr(section, '%');
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if(!nextp)
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{
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curSection += section;
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break;
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}
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curSection.append(section, nextp);
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section = nextp;
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if(((section[1] >= '0' && section[1] <= '9') ||
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(section[1] >= 'a' && section[1] <= 'f') ||
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(section[1] >= 'A' && section[1] <= 'F')) &&
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((section[2] >= '0' && section[2] <= '9') ||
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(section[2] >= 'a' && section[2] <= 'f') ||
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(section[2] >= 'A' && section[2] <= 'F')))
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{
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int b{0};
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if(section[1] >= '0' && section[1] <= '9')
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b = (section[1]-'0') << 4;
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else if(section[1] >= 'a' && section[1] <= 'f')
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b = (section[1]-'a'+0xa) << 4;
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else if(section[1] >= 'A' && section[1] <= 'F')
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b = (section[1]-'A'+0x0a) << 4;
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if(section[2] >= '0' && section[2] <= '9')
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b |= (section[2]-'0');
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else if(section[2] >= 'a' && section[2] <= 'f')
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b |= (section[2]-'a'+0xa);
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else if(section[2] >= 'A' && section[2] <= 'F')
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b |= (section[2]-'A'+0x0a);
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curSection += static_cast<char>(b);
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section += 3;
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}
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else if(section[1] == '%')
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{
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curSection += '%';
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section += 2;
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}
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else
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{
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curSection += '%';
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section += 1;
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}
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} while(*section != 0);
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}
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continue;
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}
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auto cmtpos = std::min(buffer.find('#'), buffer.size());
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while(cmtpos > 0 && std::isspace(buffer[cmtpos-1]))
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--cmtpos;
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if(!cmtpos) continue;
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buffer.erase(cmtpos);
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auto sep = buffer.find('=');
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if(sep == std::string::npos)
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{
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ERR(" config parse error: malformed option line: \"%s\"\n", buffer.c_str());
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continue;
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}
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auto keyend = sep++;
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while(keyend > 0 && std::isspace(buffer[keyend-1]))
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--keyend;
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if(!keyend)
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{
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ERR(" config parse error: malformed option line: \"%s\"\n", buffer.c_str());
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continue;
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}
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while(sep < buffer.size() && std::isspace(buffer[sep]))
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sep++;
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std::string fullKey;
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if(!curSection.empty())
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{
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fullKey += curSection;
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fullKey += '/';
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}
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fullKey += buffer.substr(0u, keyend);
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std::string value{(sep < buffer.size()) ? buffer.substr(sep) : std::string{}};
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if(value.size() > 1)
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{
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if((value.front() == '"' && value.back() == '"')
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|| (value.front() == '\'' && value.back() == '\''))
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{
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value.pop_back();
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value.erase(value.begin());
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}
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}
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TRACE(" found '%s' = '%s'\n", fullKey.c_str(), value.c_str());
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/* Check if we already have this option set */
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auto find_key = [&fullKey](const ConfigEntry &entry) -> bool
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{ return entry.key == fullKey; };
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auto ent = std::find_if(ConfOpts.begin(), ConfOpts.end(), find_key);
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if(ent != ConfOpts.end())
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{
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if(!value.empty())
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ent->value = expdup(value.c_str());
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else
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ConfOpts.erase(ent);
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}
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else if(!value.empty())
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ConfOpts.emplace_back(ConfigEntry{std::move(fullKey), expdup(value.c_str())});
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}
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ConfOpts.shrink_to_fit();
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}
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const char *GetConfigValue(const char *devName, const char *blockName, const char *keyName)
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{
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if(!keyName)
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return nullptr;
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std::string key;
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if(blockName && al::strcasecmp(blockName, "general") != 0)
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{
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key = blockName;
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if(devName)
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{
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key += '/';
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key += devName;
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}
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key += '/';
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key += keyName;
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}
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else
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{
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if(devName)
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{
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key = devName;
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key += '/';
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}
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key += keyName;
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}
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auto iter = std::find_if(ConfOpts.cbegin(), ConfOpts.cend(),
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[&key](const ConfigEntry &entry) -> bool
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{ return entry.key == key; });
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if(iter != ConfOpts.cend())
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{
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TRACE("Found %s = \"%s\"\n", key.c_str(), iter->value.c_str());
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if(!iter->value.empty())
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return iter->value.c_str();
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return nullptr;
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}
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if(!devName)
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{
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TRACE("Key %s not found\n", key.c_str());
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return nullptr;
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}
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return GetConfigValue(nullptr, blockName, keyName);
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}
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} // namespace
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#ifdef _WIN32
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void ReadALConfig()
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{
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WCHAR buffer[MAX_PATH];
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if(SHGetSpecialFolderPathW(nullptr, buffer, CSIDL_APPDATA, FALSE) != FALSE)
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{
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std::string filepath{wstr_to_utf8(buffer)};
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filepath += "\\alsoft.ini";
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TRACE("Loading config %s...\n", filepath.c_str());
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al::ifstream f{filepath};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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std::string ppath{GetProcBinary().path};
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if(!ppath.empty())
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{
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ppath += "\\alsoft.ini";
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TRACE("Loading config %s...\n", ppath.c_str());
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al::ifstream f{ppath};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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if(auto confpath = al::getenv(L"ALSOFT_CONF"))
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{
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TRACE("Loading config %s...\n", wstr_to_utf8(confpath->c_str()).c_str());
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al::ifstream f{*confpath};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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}
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#else
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void ReadALConfig()
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{
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const char *str{"/etc/openal/alsoft.conf"};
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TRACE("Loading config %s...\n", str);
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al::ifstream f{str};
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if(f.is_open())
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LoadConfigFromFile(f);
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f.close();
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std::string confpaths{al::getenv("XDG_CONFIG_DIRS").value_or("/etc/xdg")};
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/* Go through the list in reverse, since "the order of base directories
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* denotes their importance; the first directory listed is the most
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* important". Ergo, we need to load the settings from the later dirs
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* first so that the settings in the earlier dirs override them.
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*/
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std::string fname;
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while(!confpaths.empty())
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{
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auto next = confpaths.find_last_of(':');
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if(next < confpaths.length())
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{
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fname = confpaths.substr(next+1);
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confpaths.erase(next);
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}
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else
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{
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fname = confpaths;
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confpaths.clear();
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}
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if(fname.empty() || fname.front() != '/')
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WARN("Ignoring XDG config dir: %s\n", fname.c_str());
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else
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{
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if(fname.back() != '/') fname += "/alsoft.conf";
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else fname += "alsoft.conf";
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TRACE("Loading config %s...\n", fname.c_str());
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f = al::ifstream{fname};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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fname.clear();
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}
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#ifdef __APPLE__
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CFBundleRef mainBundle = CFBundleGetMainBundle();
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if(mainBundle)
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{
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unsigned char fileName[PATH_MAX];
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CFURLRef configURL;
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if((configURL=CFBundleCopyResourceURL(mainBundle, CFSTR(".alsoftrc"), CFSTR(""), nullptr)) &&
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CFURLGetFileSystemRepresentation(configURL, true, fileName, sizeof(fileName)))
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{
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f = al::ifstream{reinterpret_cast<char*>(fileName)};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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}
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#endif
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if(auto homedir = al::getenv("HOME"))
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{
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fname = *homedir;
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if(fname.back() != '/') fname += "/.alsoftrc";
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else fname += ".alsoftrc";
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TRACE("Loading config %s...\n", fname.c_str());
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f = al::ifstream{fname};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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if(auto configdir = al::getenv("XDG_CONFIG_HOME"))
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{
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fname = *configdir;
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if(fname.back() != '/') fname += "/alsoft.conf";
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else fname += "alsoft.conf";
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}
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else
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{
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fname.clear();
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if(auto homedir = al::getenv("HOME"))
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{
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fname = *homedir;
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if(fname.back() != '/') fname += "/.config/alsoft.conf";
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else fname += ".config/alsoft.conf";
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}
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}
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if(!fname.empty())
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{
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TRACE("Loading config %s...\n", fname.c_str());
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f = al::ifstream{fname};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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std::string ppath{GetProcBinary().path};
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if(!ppath.empty())
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{
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if(ppath.back() != '/') ppath += "/alsoft.conf";
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else ppath += "alsoft.conf";
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TRACE("Loading config %s...\n", ppath.c_str());
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f = al::ifstream{ppath};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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if(auto confname = al::getenv("ALSOFT_CONF"))
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{
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TRACE("Loading config %s...\n", confname->c_str());
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f = al::ifstream{*confname};
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if(f.is_open())
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LoadConfigFromFile(f);
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}
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}
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#endif
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al::optional<std::string> ConfigValueStr(const char *devName, const char *blockName, const char *keyName)
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{
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if(const char *val{GetConfigValue(devName, blockName, keyName)})
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return al::make_optional<std::string>(val);
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return al::nullopt;
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}
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al::optional<int> ConfigValueInt(const char *devName, const char *blockName, const char *keyName)
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{
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if(const char *val{GetConfigValue(devName, blockName, keyName)})
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return al::make_optional(static_cast<int>(std::strtol(val, nullptr, 0)));
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return al::nullopt;
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}
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al::optional<unsigned int> ConfigValueUInt(const char *devName, const char *blockName, const char *keyName)
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{
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if(const char *val{GetConfigValue(devName, blockName, keyName)})
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return al::make_optional(static_cast<unsigned int>(std::strtoul(val, nullptr, 0)));
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return al::nullopt;
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}
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al::optional<float> ConfigValueFloat(const char *devName, const char *blockName, const char *keyName)
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{
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if(const char *val{GetConfigValue(devName, blockName, keyName)})
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return al::make_optional(std::strtof(val, nullptr));
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return al::nullopt;
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}
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al::optional<bool> ConfigValueBool(const char *devName, const char *blockName, const char *keyName)
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{
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if(const char *val{GetConfigValue(devName, blockName, keyName)})
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return al::make_optional(al::strcasecmp(val, "on") == 0 || al::strcasecmp(val, "yes") == 0
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|| al::strcasecmp(val, "true")==0 || atoi(val) != 0);
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return al::nullopt;
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}
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bool GetConfigValueBool(const char *devName, const char *blockName, const char *keyName, bool def)
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{
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if(const char *val{GetConfigValue(devName, blockName, keyName)})
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return (al::strcasecmp(val, "on") == 0 || al::strcasecmp(val, "yes") == 0
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|| al::strcasecmp(val, "true") == 0 || atoi(val) != 0);
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return def;
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}
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