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Migrate some env initialization into env_dispatch

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This commit is contained in:
ridiculousfish 2019-03-31 19:51:08 -07:00
parent b67174b4a3
commit e7de9cc371
3 changed files with 33 additions and 35 deletions
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3
src/env.cpp
View file

@ -687,7 +687,6 @@ void env_init(const struct config_paths_t *paths /* or NULL */) {
init_curses(vars);
init_input();
init_path_vars();
guess_emoji_width();
// Set up the USER and PATH variables
setup_path();
@ -789,7 +788,7 @@ void env_init(const struct config_paths_t *paths /* or NULL */) {
vars.set_one(FISH_BIND_MODE_VAR, ENV_GLOBAL, DEFAULT_BIND_MODE);
// Allow changes to variables to produce events.
env_dispatch_init();
env_dispatch_init(vars);
// Set up universal variables. The empty string means to use the default path.
assert(s_universal_variables == NULL);

62
src/env_dispatch.cpp
View file

@ -120,6 +120,9 @@ class var_dispatch_table_t {
}
};
// Run those dispatch functions which want to be run at startup.
static void run_inits(const environment_t &vars);
// return a new-ly allocated dispatch table, running those dispatch functions which should be
// initialized.
static std::unique_ptr<const var_dispatch_table_t> create_dispatch_table();
@ -128,7 +131,12 @@ static std::unique_ptr<const var_dispatch_table_t> create_dispatch_table();
// avoid shutdown destructors. This is set during startup and should not be modified after.
static const var_dispatch_table_t *s_var_dispatch_table;
void env_dispatch_init() { s_var_dispatch_table = create_dispatch_table().release(); }
void env_dispatch_init(const environment_t &vars) {
run_inits(vars);
// Note this deliberately leaks; the dispatch table is immortal.
// Via this construct we can avoid invoking destructors at shutdown.
s_var_dispatch_table = create_dispatch_table().release();
}
/// Properly sets all timezone information.
static void handle_timezone(const wchar_t *env_var_name, const environment_t &vars) {
@ -146,9 +154,15 @@ static void handle_timezone(const wchar_t *env_var_name, const environment_t &va
}
/// Update the value of g_guessed_fish_emoji_width
void guess_emoji_width() {
static void guess_emoji_width(const environment_t &vars) {
if (auto width_str = vars.get(L"fish_emoji_width")) {
int new_width = fish_wcstol(width_str->as_string().c_str());
g_fish_emoji_width = std::max(0, new_width);
debug(2, "'fish_emoji_width' preference: %d, overwriting default", g_fish_emoji_width);
return;
}
wcstring term;
auto &vars = env_stack_t::globals();
if (auto term_var = vars.get(L"TERM_PROGRAM")) {
term = term_var->as_string();
}
@ -215,25 +229,6 @@ static void handle_fish_term_change(const wcstring &op, const wcstring &var_name
reader_react_to_color_change();
}
static void handle_escape_delay_change(const wcstring &op, const wcstring &var_name,
env_stack_t &vars) {
UNUSED(op);
UNUSED(var_name);
update_wait_on_escape_ms(vars);
}
static void handle_change_emoji_width(const wcstring &op, const wcstring &var_name,
env_stack_t &vars) {
(void)op;
(void)var_name;
int new_width = 0;
if (auto width_str = vars.get(L"fish_emoji_width")) {
new_width = fish_wcstol(width_str->as_string().c_str());
}
g_fish_emoji_width = std::max(0, new_width);
debug(2, "'fish_emoji_width' preference: %d, overwriting default", g_fish_emoji_width);
}
static void handle_change_ambiguous_width(const wcstring &op, const wcstring &var_name,
env_stack_t &vars) {
(void)op;
@ -294,18 +289,14 @@ static void handle_magic_colon_var_change(const wcstring &op, const wcstring &va
fix_colon_delimited_var(var_name, vars);
}
static void handle_locale_change(const wcstring &op, const wcstring &var_name, env_stack_t &vars) {
UNUSED(op);
UNUSED(var_name);
static void handle_locale_change(const environment_t &vars) {
init_locale(vars);
// We need to re-guess emoji width because the locale might have changed to a multibyte one.
guess_emoji_width();
guess_emoji_width(vars);
}
static void handle_curses_change(const wcstring &op, const wcstring &var_name, env_stack_t &vars) {
UNUSED(op);
UNUSED(var_name);
guess_emoji_width();
static void handle_curses_change(const environment_t &vars) {
guess_emoji_width(vars);
init_curses(vars);
}
@ -326,8 +317,8 @@ static std::unique_ptr<const var_dispatch_table_t> create_dispatch_table() {
var_dispatch_table->add(L"CDPATH", handle_magic_colon_var_change);
var_dispatch_table->add(L"fish_term256", handle_fish_term_change);
var_dispatch_table->add(L"fish_term24bit", handle_fish_term_change);
var_dispatch_table->add(L"fish_escape_delay_ms", handle_escape_delay_change);
var_dispatch_table->add(L"fish_emoji_width", handle_change_emoji_width);
var_dispatch_table->add(L"fish_escape_delay_ms", update_wait_on_escape_ms);
var_dispatch_table->add(L"fish_emoji_width", guess_emoji_width);
var_dispatch_table->add(L"fish_ambiguous_width", handle_change_ambiguous_width);
var_dispatch_table->add(L"LINES", handle_term_size_change);
var_dispatch_table->add(L"COLUMNS", handle_term_size_change);
@ -338,3 +329,10 @@ static std::unique_ptr<const var_dispatch_table_t> create_dispatch_table() {
var_dispatch_table->add(L"TZ", handle_tz_change);
return var_dispatch_table;
}
static void run_inits(const environment_t &vars) {
// This is the subset of those dispatch functions which want to be run at startup.
handle_locale_change(vars);
handle_curses_change(vars);
update_wait_on_escape_ms(vars);
}

3
src/env_dispatch.h
View file

@ -10,7 +10,8 @@
#include <memory>
/// Initialize variable dispatch.
void env_dispatch_init();
class environment_t;
void env_dispatch_init(const environment_t &vars);
class env_stack_t;
void env_dispatch_var_change(const wchar_t *op, const wcstring &key, env_stack_t &vars);