kakoune/src/main.cc

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#include "assert.hh"
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#include "buffer.hh"
#include "buffer_manager.hh"
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#include "client_manager.hh"
#include "color_registry.hh"
#include "command_manager.hh"
#include "commands.hh"
#include "context.hh"
#include "debug.hh"
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#include "event_manager.hh"
#include "file.hh"
#include "filters.hh"
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#include "highlighters.hh"
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#include "hook_manager.hh"
#include "ncurses.hh"
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#include "option_manager.hh"
#include "parameters_parser.hh"
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#include "register_manager.hh"
#include "remote.hh"
#include "shell_manager.hh"
#include "string.hh"
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#if defined(__APPLE__)
#include <mach-o/dyld.h>
#endif
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#include <unordered_map>
#include <locale>
#include <signal.h>
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using namespace Kakoune;
void run_unit_tests();
String runtime_directory()
{
char buffer[2048];
#if defined(__linux__)
ssize_t res = readlink("/proc/self/exe", buffer, 2048);
kak_assert(res != -1);
buffer[res] = '\0';
#elif defined(__APPLE__)
uint32_t bufsize = 2048;
_NSGetExecutablePath(buffer, &bufsize);
char* canonical_path = realpath(buffer, NULL);
strncpy(buffer, canonical_path, 2048);
free(canonical_path);
#else
# error "finding executable path is not implemented on this platform"
#endif
char* ptr = strrchr(buffer, '/');
if (not ptr)
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throw runtime_error("unable to determine runtime directory");
return String(buffer, ptr);
}
void register_env_vars()
{
ShellManager& shell_manager = ShellManager::instance();
shell_manager.register_env_var("bufname",
[](const String& name, const Context& context)
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{ return context.buffer().display_name(); });
shell_manager.register_env_var("timestamp",
[](const String& name, const Context& context)
{ return int_to_str(context.buffer().timestamp()); });
shell_manager.register_env_var("selection",
[](const String& name, const Context& context)
{ return context.editor().main_selection().content(); });
shell_manager.register_env_var("selections",
[](const String& name, const Context& context)
{ auto sels = context.editor().selections_content();
return std::accumulate(sels.begin(), sels.end(), ""_str,
[](const String& lhs, const String& rhs) { return lhs.empty() ? rhs : lhs + "," + rhs; }); });
shell_manager.register_env_var("runtime",
[](const String& name, const Context& context)
{ return runtime_directory(); });
shell_manager.register_env_var("opt_.+",
[](const String& name, const Context& context)
{ return context.options()[name.substr(4_byte)].get_as_string(); });
shell_manager.register_env_var("reg_.+",
[](const String& name, const Context& context)
{ return RegisterManager::instance()[name[4]].values(context)[0]; });
shell_manager.register_env_var("socket",
[](const String& name, const Context& context)
{ return Server::instance().filename(); });
shell_manager.register_env_var("client",
[](const String& name, const Context& context)
{ return ClientManager::instance().get_client(context).name(); });
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shell_manager.register_env_var("cursor_line",
[](const String& name, const Context& context)
{ return int_to_str((int)context.editor().main_selection().last().line() + 1); });
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shell_manager.register_env_var("cursor_column",
[](const String& name, const Context& context)
{ return int_to_str((int)context.editor().main_selection().last().column() + 1); });
shell_manager.register_env_var("selection_desc",
[](const String& name, const Context& context)
{ auto& sel = context.editor().main_selection();
auto beg = sel.begin();
return int_to_str((int)beg.line() + 1) + ':' + int_to_str((int)beg.column() + 1) + '+' + int_to_str((int)(sel.end() - beg)); });
}
void register_registers()
{
RegisterManager& register_manager = RegisterManager::instance();
register_manager.register_dynamic_register('%', [](const Context& context) { return std::vector<String>(1, context.buffer().display_name()); });
register_manager.register_dynamic_register('.', [](const Context& context) { return context.editor().selections_content(); });
for (size_t i = 0; i < 10; ++i)
{
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register_manager.register_dynamic_register('0'+i,
[i](const Context& context) {
std::vector<String> result;
for (auto& sel : context.editor().selections())
result.emplace_back(i < sel.captures().size() ? sel.captures()[i] : "");
return result;
});
}
}
void create_local_client(const String& init_command)
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{
class LocalNCursesUI : public NCursesUI
{
~LocalNCursesUI()
{
if (not ClientManager::instance().empty() and fork())
{
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this->NCursesUI::~NCursesUI();
puts("detached from terminal\n");
exit(0);
}
}
};
UserInterface* ui = new LocalNCursesUI{};
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static Client* client = ClientManager::instance().create_client(
std::unique_ptr<UserInterface>{ui}, init_command);
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signal(SIGHUP, [](int) {
if (client)
ClientManager::instance().remove_client(*client);
client = nullptr;
});
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}
void signal_handler(int signal)
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{
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NCursesUI::abort();
const char* text = nullptr;
switch (signal)
{
case SIGSEGV: text = "SIGSEGV"; break;
case SIGFPE: text = "SIGFPE"; break;
case SIGQUIT: text = "SIGQUIT"; break;
case SIGTERM: text = "SIGTERM"; break;
}
on_assert_failed(text);
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abort();
}
int main(int argc, char* argv[])
{
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try
{
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std::locale::global(std::locale(""));
signal(SIGSEGV, signal_handler);
signal(SIGFPE, signal_handler);
signal(SIGQUIT, signal_handler);
signal(SIGTERM, signal_handler);
std::vector<String> params;
for (size_t i = 1; i < argc; ++i)
params.push_back(argv[i]);
ParametersParser parser(params, { { "c", true }, { "e", true }, { "n", false } });
EventManager event_manager;
String init_command;
if (parser.has_option("e"))
init_command = parser.option_value("e");
if (parser.has_option("c"))
{
try
{
auto client = connect_to(parser.option_value("c"),
std::unique_ptr<UserInterface>{new NCursesUI{}},
init_command);
while (true)
event_manager.handle_next_events();
}
catch (peer_disconnected&)
{
puts("disconnected");
}
return 0;
}
GlobalOptions global_options;
GlobalHooks global_hooks;
ShellManager shell_manager;
CommandManager command_manager;
BufferManager buffer_manager;
RegisterManager register_manager;
HighlighterRegistry highlighter_registry;
FilterRegistry filter_registry;
ColorRegistry color_registry;
ClientManager client_manager;
run_unit_tests();
register_env_vars();
register_registers();
register_commands();
register_highlighters();
register_filters();
write_debug("*** This is the debug buffer, where debug info will be written ***");
write_debug("pid: " + int_to_str(getpid()));
write_debug("utf-8 test: é á ï");
Server server;
if (not parser.has_option("n")) try
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{
Context initialisation_context;
command_manager.execute("source " + runtime_directory() + "/kakrc",
initialisation_context);
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}
catch (Kakoune::runtime_error& error)
{
write_debug("error while parsing kakrc: "_str + error.what());
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}
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if (parser.positional_count() != 0)
{
// create buffers in reverse order so that the first given buffer
// is the most recently created one.
for (int i = parser.positional_count() - 1; i >= 0; --i)
{
const String& file = parser[i];
if (not create_buffer_from_file(file))
new Buffer(file, Buffer::Flags::New | Buffer::Flags::File);
}
}
else
new Buffer("*scratch*", Buffer::Flags::None);
create_local_client(init_command);
while (not client_manager.empty())
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event_manager.handle_next_events();
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}
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catch (Kakoune::exception& error)
{
on_assert_failed(("uncaught exception:\n"_str + error.what()).c_str());
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return -1;
}
catch (std::exception& error)
{
on_assert_failed(("uncaught exception:\n"_str + error.what()).c_str());
return -1;
}
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catch (...)
{
on_assert_failed("uncaught exception");
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return -1;
}
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return 0;
}