569 lines
17 KiB
C++
569 lines
17 KiB
C++
#include "assert.hh"
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#include "alias_registry.hh"
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#include "buffer.hh"
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#include "buffer_manager.hh"
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#include "buffer_utils.hh"
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#include "client_manager.hh"
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#include "command_manager.hh"
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#include "commands.hh"
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#include "context.hh"
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#include "debug.hh"
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#include "event_manager.hh"
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#include "face_registry.hh"
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#include "file.hh"
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#include "highlighters.hh"
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#include "hook_manager.hh"
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#include "keymap_manager.hh"
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#include "ncurses.hh"
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#include "option_manager.hh"
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#include "parameters_parser.hh"
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#include "register_manager.hh"
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#include "remote.hh"
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#include "shell_manager.hh"
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#include "string.hh"
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#include "interned_string.hh"
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#include "window.hh"
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#include <unordered_map>
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#include <locale>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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using namespace Kakoune;
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void run_unit_tests();
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String runtime_directory()
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{
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String bin_path = get_kak_binary_path();
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size_t last_slash = bin_path.find_last_of('/');
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if (last_slash == String::npos)
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throw runtime_error("unable to determine runtime directory");
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return bin_path.substr(0_byte, (int)last_slash) + "/../share/kak";
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}
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void register_env_vars()
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{
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static const struct {
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const char* name;
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String (*func)(StringView, const Context&);
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} env_vars[] = { {
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"bufname",
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[](StringView name, const Context& context)
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{ return context.buffer().display_name(); }
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}, {
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"buffile",
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[](StringView name, const Context& context) -> String
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{ return context.buffer().name(); }
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}, {
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"timestamp",
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[](StringView name, const Context& context)
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{ return to_string(context.buffer().timestamp()); }
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}, {
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"selection",
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[](StringView name, const Context& context)
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{ const Selection& sel = context.selections().main();
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return content(context.buffer(), sel); }
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}, {
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"selections",
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[](StringView name, const Context& context)
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{ auto sels = context.selections_content();
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String res;
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for (size_t i = 0; i < sels.size(); ++i)
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{
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res += escape(sels[i], ':', '\\');
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if (i != sels.size() - 1)
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res += ':';
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}
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return res; }
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}, {
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"runtime",
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[](StringView name, const Context& context)
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{ return runtime_directory(); }
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}, {
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"opt_.+",
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[](StringView name, const Context& context)
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{ return context.options()[name.substr(4_byte)].get_as_string(); }
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}, {
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"reg_.+",
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[](StringView name, const Context& context) -> String
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{ return context.main_sel_register_value(name.substr(4_byte)); }
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}, {
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"client_env_.+",
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[](StringView name, const Context& context) -> String
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{ return context.client().get_env_var(name.substr(11_byte)); }
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}, {
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"session",
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[](StringView name, const Context& context) -> String
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{ return Server::instance().session(); }
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}, {
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"client",
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[](StringView name, const Context& context) -> String
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{ return context.name(); }
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}, {
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"cursor_line",
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[](StringView name, const Context& context)
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{ return to_string(context.selections().main().cursor().line + 1); }
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}, {
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"cursor_column",
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[](StringView name, const Context& context)
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{ return to_string(context.selections().main().cursor().column + 1); }
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}, {
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"cursor_char_column",
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[](StringView name, const Context& context)
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{ auto coord = context.selections().main().cursor();
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return to_string(context.buffer()[coord.line].char_count_to(coord.column) + 1); }
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}, {
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"selection_desc",
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[](StringView name, const Context& context)
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{ auto& sel = context.selections().main();
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auto beg = sel.min();
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return to_string(beg.line + 1) + '.' + to_string(beg.column + 1) + '+' +
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to_string((int)context.buffer().distance(beg, sel.max())+1); }
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}, {
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"selections_desc",
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[](StringView name, const Context& context)
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{
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String res;
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for (auto& sel : context.selections())
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{
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auto beg = sel.min();
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if (not res.empty())
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res += ':';
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res += to_string(beg.line + 1) + '.' + to_string(beg.column + 1) + '+' +
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to_string((int)context.buffer().distance(beg, sel.max())+1);
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}
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return res;
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}
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}, {
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"window_width",
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[](StringView name, const Context& context)
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{ return to_string(context.window().dimensions().column); }
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}, {
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"window_height",
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[](StringView name, const Context& context)
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{ return to_string(context.window().dimensions().line); }
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} };
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ShellManager& shell_manager = ShellManager::instance();
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for (auto& env_var : env_vars)
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shell_manager.register_env_var(env_var.name, env_var.func);
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}
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void register_registers()
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{
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using StringList = std::vector<String>;
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static const struct {
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char name;
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StringList (*func)(const Context&);
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} dyn_regs[] = {
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{ '%', [](const Context& context) { return StringList{{context.buffer().display_name()}}; } },
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{ '.', [](const Context& context) { return context.selections_content(); } },
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{ '#', [](const Context& context) {
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StringList res;
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for (size_t i = 1; i < context.selections().size()+1; ++i)
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res.push_back(to_string((int)i));
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return res;
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} }
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};
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RegisterManager& register_manager = RegisterManager::instance();
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for (auto& dyn_reg : dyn_regs)
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register_manager.register_dynamic_register(dyn_reg.name, dyn_reg.func);
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for (size_t i = 0; i < 10; ++i)
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{
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register_manager.register_dynamic_register('0'+i,
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[i](const Context& context) {
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std::vector<String> result;
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for (auto& sel : context.selections())
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result.emplace_back(i < sel.captures().size() ? sel.captures()[i] : "");
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return result;
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});
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}
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}
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void create_local_client(const String& init_command)
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{
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class LocalNCursesUI : public NCursesUI
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{
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~LocalNCursesUI()
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{
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if (not ClientManager::instance().empty() and fork())
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{
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this->NCursesUI::~NCursesUI();
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puts("detached from terminal\n");
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exit(0);
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}
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}
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};
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if (not isatty(1))
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throw runtime_error("stdout is not a tty");
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if (not isatty(0))
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{
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// move stdin to another fd, and restore tty as stdin
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int fd = dup(0);
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int tty = open("/dev/tty", O_RDONLY);
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dup2(tty, 0);
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close(tty);
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create_fifo_buffer("*stdin*", fd);
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}
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UserInterface* ui = new LocalNCursesUI{};
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static Client* client = ClientManager::instance().create_client(
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std::unique_ptr<UserInterface>{ui}, get_env_vars(), init_command);
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signal(SIGHUP, [](int) {
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if (client)
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ClientManager::instance().remove_client(*client);
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client = nullptr;
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});
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}
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void signal_handler(int signal)
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{
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NCursesUI::abort();
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const char* text = nullptr;
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switch (signal)
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{
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case SIGSEGV: text = "SIGSEGV"; break;
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case SIGFPE: text = "SIGFPE"; break;
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case SIGQUIT: text = "SIGQUIT"; break;
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case SIGTERM: text = "SIGTERM"; break;
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}
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if (signal != SIGTERM)
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on_assert_failed(text);
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if (Server::has_instance())
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Server::instance().close_session();
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if (BufferManager::has_instance())
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BufferManager::instance().backup_modified_buffers();
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if (signal == SIGTERM)
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exit(-1);
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else
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abort();
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}
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int run_client(StringView session, StringView init_command)
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{
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try
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{
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EventManager event_manager;
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auto client = connect_to(session,
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std::unique_ptr<UserInterface>{new NCursesUI{}},
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get_env_vars(),
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init_command);
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while (true)
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event_manager.handle_next_events();
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}
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catch (peer_disconnected&)
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{
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fputs("disconnected from server\n", stderr);
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return -1;
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}
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catch (connection_failed& e)
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{
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fputs(e.what(), stderr);
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return -1;
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}
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return 0;
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}
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int run_server(StringView session, StringView init_command,
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bool ignore_kakrc, bool daemon, memoryview<StringView> files)
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{
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static bool terminate = false;
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if (daemon)
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{
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if (session.empty())
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{
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fputs("-d needs a session name to be specified with -s\n", stderr);
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return -1;
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}
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if (pid_t child = fork())
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{
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printf("Kakoune forked to background, for session '%s'\n"
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"send SIGTERM to process %d for closing the session\n",
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(const char*)session.zstr(), child);
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exit(0);
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}
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signal(SIGTERM, [](int) { terminate = true; });
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}
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StringRegistry string_registry;
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EventManager event_manager;
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GlobalOptions global_options;
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GlobalHooks global_hooks;
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GlobalKeymaps global_keymaps;
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GlobalAliases global_aliases;
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ShellManager shell_manager;
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CommandManager command_manager;
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BufferManager buffer_manager;
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RegisterManager register_manager;
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HighlighterRegistry highlighter_registry;
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DefinedHighlighters defined_highlighters;
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FaceRegistry face_registry;
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ClientManager client_manager;
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run_unit_tests();
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register_env_vars();
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register_registers();
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register_commands();
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register_highlighters();
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write_debug("*** This is the debug buffer, where debug info will be written ***");
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Server server(session.empty() ? to_string(getpid()) : String{session});
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if (not ignore_kakrc) try
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{
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Context initialisation_context;
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command_manager.execute("source " + runtime_directory() + "/kakrc",
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initialisation_context);
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}
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catch (Kakoune::runtime_error& error)
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{
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write_debug("error while parsing kakrc:\n "_str + error.what());
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}
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catch (Kakoune::client_removed&)
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{
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write_debug("error while parsing kakrc: asked to quit");
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}
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{
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Context empty_context;
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global_hooks.run_hook("KakBegin", "", empty_context);
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}
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if (not files.empty()) try
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{
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// create buffers in reverse order so that the first given buffer
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// is the most recently created one.
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for (auto& file : reversed(files))
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{
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if (not create_buffer_from_file(file))
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new Buffer(file, Buffer::Flags::New | Buffer::Flags::File);
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}
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}
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catch (Kakoune::runtime_error& error)
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{
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write_debug("error while opening command line files: "_str + error.what());
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}
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else
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new Buffer("*scratch*", Buffer::Flags::None);
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if (not daemon)
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create_local_client(init_command);
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while (not terminate and (not client_manager.empty() or daemon))
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{
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event_manager.handle_next_events();
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client_manager.clear_mode_trashes();
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buffer_manager.clear_buffer_trash();
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client_manager.redraw_clients();
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}
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{
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Context empty_context;
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global_hooks.run_hook("KakEnd", "", empty_context);
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}
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return 0;
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}
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int run_filter(StringView keystr, memoryview<StringView> files)
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{
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StringRegistry string_registry;
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GlobalOptions global_options;
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GlobalHooks global_hooks;
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GlobalKeymaps global_keymaps;
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GlobalAliases global_aliases;
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ShellManager shell_manager;
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BufferManager buffer_manager;
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RegisterManager register_manager;
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register_env_vars();
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register_registers();
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try
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{
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auto keys = parse_keys(keystr);
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auto apply_keys_to_buffer = [&](Buffer& buffer)
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{
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try
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{
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InputHandler input_handler{{ buffer, Selection{{0,0}, buffer.back_coord()} }};
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for (auto& key : keys)
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input_handler.handle_key(key);
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}
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catch (Kakoune::runtime_error& err)
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{
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fprintf(stderr, "error while applying keys to buffer '%s': %s\n",
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buffer.display_name().c_str(), err.what());
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}
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};
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for (auto& file : files)
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{
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Buffer* buffer = create_buffer_from_file(file);
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apply_keys_to_buffer(*buffer);
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write_buffer_to_file(*buffer, file + ".kak-out");
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buffer_manager.delete_buffer(*buffer);
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}
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if (not isatty(0))
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{
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Buffer* buffer = create_buffer_from_data(read_fd(0), "*stdin*",
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Buffer::Flags::None);
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apply_keys_to_buffer(*buffer);
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write_buffer_to_fd(*buffer, 1);
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buffer_manager.delete_buffer(*buffer);
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}
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}
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catch (Kakoune::runtime_error& err)
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{
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fprintf(stderr, "error: %s\n", err.what());
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}
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buffer_manager.clear_buffer_trash();
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return 0;
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}
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int run_pipe(StringView session)
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{
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char buf[512];
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String command;
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while (ssize_t count = read(0, buf, 512))
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{
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if (count < 0)
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{
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fprintf(stderr, "error while reading stdin\n");
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return -1;
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}
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command += String{buf, buf + count};
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}
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try
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{
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send_command(session, command);
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}
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catch (connection_failed& e)
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{
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fputs(e.what(), stderr);
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return -1;
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}
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return 0;
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}
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int main(int argc, char* argv[])
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{
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setlocale(LC_ALL, "");
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signal(SIGSEGV, signal_handler);
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signal(SIGFPE, signal_handler);
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signal(SIGQUIT, signal_handler);
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signal(SIGTERM, signal_handler);
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std::vector<String> params;
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for (size_t i = 1; i < argc; ++i)
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params.push_back(argv[i]);
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const ParameterDesc param_desc{
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SwitchMap{ { "c", { true, "connect to given session" } },
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{ "e", { true, "execute argument on initialisation" } },
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{ "n", { false, "do not source kakrc files on startup" } },
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{ "s", { true, "set session name" } },
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{ "d", { false, "run as a headless session (requires -s)" } },
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{ "p", { true, "just send stdin as commands to the given session" } },
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{ "f", { true, "act as a filter, executing given keys on given files" } } }
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};
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try
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{
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ParametersParser parser(params, param_desc);
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if (parser.has_option("p"))
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{
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for (auto opt : { "c", "n", "s", "d", "e" })
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{
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if (parser.has_option(opt))
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{
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fprintf(stderr, "error: -%s makes not sense with -p\n", opt);
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return -1;
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}
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}
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return run_pipe(parser.option_value("p"));
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}
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else if (parser.has_option("f"))
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{
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std::vector<StringView> files;
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for (size_t i = 0; i < parser.positional_count(); ++i)
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files.emplace_back(parser[i]);
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return run_filter(parser.option_value("f"), files);
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}
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String init_command;
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if (parser.has_option("e"))
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init_command = parser.option_value("e");
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if (parser.has_option("c"))
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{
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for (auto opt : { "n", "s", "d" })
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{
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if (parser.has_option(opt))
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{
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fprintf(stderr, "error: -%s makes not sense with -c\n", opt);
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return -1;
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}
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}
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return run_client(parser.option_value("c"), init_command);
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}
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else
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{
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std::vector<StringView> files;
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for (size_t i = 0; i < parser.positional_count(); ++i)
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files.emplace_back(parser[i]);
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StringView session;
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if (parser.has_option("s"))
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session = parser.option_value("s");
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return run_server(session, init_command,
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parser.has_option("n"),
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parser.has_option("d"),
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files);
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}
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}
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catch (Kakoune::parameter_error& error)
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{
|
|
printf("Error: %s\n"
|
|
"Valid switches:\n"
|
|
"%s",
|
|
error.what(),
|
|
generate_switches_doc(param_desc.switches).c_str());
|
|
return -1;
|
|
}
|
|
catch (Kakoune::exception& error)
|
|
{
|
|
on_assert_failed(("uncaught exception:\n"_str + error.what()).c_str());
|
|
return -1;
|
|
}
|
|
catch (std::exception& error)
|
|
{
|
|
on_assert_failed(("uncaught exception:\n"_str + error.what()).c_str());
|
|
return -1;
|
|
}
|
|
catch (...)
|
|
{
|
|
on_assert_failed("uncaught exception");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|