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// Copyright 2009 Daniel Erat <dan@erat.org>
// All rights reserved.
#include <getopt.h>
#include <unistd.h>
#include <cerrno>
#include <csignal>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <string>
#include "common.h"
#include "config_parser.h"
#include "settings_manager.h"
using std::string;
using std::vector;
namespace {
void HandleSignal(int signum) {
}
// Returns the first path in |paths| that is readable, or an empty string if
// none of the paths can be read.
string GetFirstReadablePath(const vector<string>& paths) {
for (size_t i = 0; i < paths.size(); ++i) {
if (access(paths[i].c_str(), R_OK) == 0) {
return paths[i];
}
}
return string();
}
} // namespace
int main(int argc, char** argv) {
static const char* kUsage =
"Usage: xsettingsd [OPTION] ...\n"
"\n"
"Daemon implementing the XSETTINGS spec to control settings for X11\n"
"applications.\n"
"\n"
"Options: -c, --config=FILE config file (default is ~/.xsettingsd)\n"
" -h, --help print this help message\n"
" -s, --screen=SCREEN screen to use (default is all)\n";
int screen = -1;
string config_file;
struct option options[] = {
{ "config", 1, NULL, 'c', },
{ "help", 0, NULL, 'h', },
{ "screen", 1, NULL, 's', },
{ NULL, 0, NULL, 0 },
};
opterr = 0;
while (true) {
int ch = getopt_long(argc, argv, "c:hs:", options, NULL);
if (ch == -1) {
break;
} else if (ch == 'c') {
config_file = optarg;
} else if (ch == 'h' || ch == '?') {
fprintf(stderr, "%s", kUsage);
return 1;
} else if (ch == 's') {
char* endptr = NULL;
screen = strtol(optarg, &endptr, 10);
if (optarg[0] == '\0' || endptr[0] != '\0' || screen < 0) {
fprintf(stderr, "Invalid screen \"%s\"\n", optarg);
return 1;
}
}
}
// Check default config file locations if one wasn't supplied via a flag.
if (config_file.empty()) {
const vector<string> paths = xsettingsd::GetDefaultConfigFilePaths();
config_file = GetFirstReadablePath(paths);
if (config_file.empty()) {
fprintf(stderr, "%s: Couldn't find config file. Tried the following:\n",
xsettingsd::kProgName);
for (size_t i = 0; i < paths.size(); ++i)
fprintf(stderr, " %s\n", paths[i].c_str());
return 1;
}
}
xsettingsd::SettingsManager manager(config_file);
if (!manager.LoadConfig())
return 1;
if (!manager.InitX11(screen, true))
return 1;
signal(SIGHUP, HandleSignal);
manager.RunEventLoop();
return 0;
}
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