A TUI to monitor YouTube channels
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// SPDX-License-Identifier: MIT
#include "tui.h"
#include <algorithm>
#include <deque>
#include <string>
#include <vector>
#include <stdarg.h>
termpaint_integration *integration;
termpaint_terminal *terminal;
termpaint_surface *surface;
AttributeSet attributes[ASetTypeCount];
std::unordered_map<std::string, std::string> key_symbols;
struct button_info {
Button button;
std::string string;
size_t width;
};
std::vector<button_info> all_buttons;
std::deque<Event> eventqueue;
static void convert_tp_event(void *, termpaint_event *tp_event) {
Event e;
if (tp_event->type == TERMPAINT_EV_CHAR) {
e.type = tp_event->type;
e.modifier = tp_event->c.modifier;
e.string = std::string(tp_event->c.string, tp_event->c.length);
eventqueue.push_back(e);
} else if (tp_event->type == TERMPAINT_EV_KEY) {
e.type = tp_event->type;
e.modifier = tp_event->key.modifier;
e.string = std::string(tp_event->key.atom, tp_event->key.length);
eventqueue.push_back(e);
}
}
std::optional<Event> wait_for_event(termpaint_integration *integration, int timeout) {
const int cols = termpaint_surface_width(surface);
const int rows = termpaint_surface_height(surface);
while (eventqueue.empty()) {
bool ok = false;
if(timeout > 0)
ok = termpaintx_full_integration_do_iteration_with_timeout(integration, &timeout);
else
ok = termpaintx_full_integration_do_iteration(integration);
if (!ok) {
return {}; // or some other error handling
} else if(cols != termpaint_surface_width(surface) || rows != termpaint_surface_height(surface)) {
Event e;
e.modifier = 0;
e.type = EV_RESIZE;
eventqueue.push_back(e);
} else if(timeout == 0) {
Event e;
e.modifier = 0;
e.type = EV_TIMEOUT;
eventqueue.push_back(e);
}
}
Event e = eventqueue.front();
eventqueue.pop_front();
return e;
}
static void tp_init_internal()
{
all_buttons = {
{Button::Ok, "Ok", 2},
{Button::Cancel, "Cancel", 6},
{Button::Yes, "Yes", 3},
{Button::No, "No", 2},
};
key_symbols = {
{"ArrowLeft", ""},
{"ArrowUp", ""},
{"ArrowRight", ""},
{"ArrowDown", ""},
{"Escape", "Esc"},
};
auto new_attr_set = [](AttributeSet &set, int color, int style = 0) {
set.normal = termpaint_attr_new(color, TERMPAINT_DEFAULT_COLOR);
termpaint_attr_set_style(set.normal, style);
set.highlight = termpaint_attr_clone(set.normal);
termpaint_attr_set_style(set.highlight, TERMPAINT_STYLE_INVERSE | style);
};
new_attr_set(attributes[ASNormal], TERMPAINT_DEFAULT_COLOR);
new_attr_set(attributes[ASWatched], TERMPAINT_DEFAULT_COLOR);
new_attr_set(attributes[ASUnwatched], TERMPAINT_DEFAULT_COLOR, TERMPAINT_STYLE_BOLD);
surface = termpaint_terminal_get_surface(terminal);
termpaint_terminal_set_cursor_visible(terminal, false);
}
static const char* terminal_options = "+kbdsig +kbdsigint +kbdsigtstp";
void tp_init()
{
integration = termpaintx_full_integration_setup_terminal_fullscreen( "+kbdsig +kbdsigint +kbdsigtstp", convert_tp_event, nullptr, &terminal);
tp_init_internal();
}
void tp_init_from_fd(int fd)
{
integration = termpaintx_full_integration_from_fd(fd, false, terminal_options);
if (!integration) {
//std::string error = "Error: Terminal not available!";
//(void)!write(fd, error.c_str(), error.size()); // already printing an error message
return;
}
terminal = termpaint_terminal_new(integration);
termpaintx_full_integration_set_terminal(integration, terminal);
termpaint_terminal_set_event_cb(terminal, convert_tp_event, nullptr);
termpaint_terminal_auto_detect(terminal);
termpaintx_full_integration_wait_for_ready_with_message(integration, 10000,
"Terminal auto detection is taking unusually long, press space to abort.");
termpaintx_full_integration_apply_input_quirks(integration);
int width, height;
termpaintx_full_integration_terminal_size(integration, &width, &height);
termpaint_terminal_setup_fullscreen(terminal, width, height, terminal_options);
termpaintx_full_integration_ttyrescue_start(integration);
tp_init_internal();
}
void tp_shutdown()
{
auto free_attr_set = [](AttributeSet &set) {
termpaint_attr_free(set.normal);
termpaint_attr_free(set.highlight);
};
free_attr_set(attributes[ASNormal]);
free_attr_set(attributes[ASWatched]);
free_attr_set(attributes[ASUnwatched]);
termpaint_terminal_free_with_restore(terminal);
}
void tp_flush(const bool force)
{
termpaint_terminal_flush(terminal, force);
}
std::optional<Event> tp_wait_for_event(int timeout)
{
return wait_for_event(integration, timeout);
}
static std::string repeated(const int n, const std::string &what)
{
std::string out;
for(int i=0; i<n; i++)
out.append(what);
return out;
}
size_t string_width(const std::string &str)
{
termpaint_text_measurement *m = termpaint_text_measurement_new(surface);
termpaint_text_measurement_feed_utf8(m, str.c_str(), str.length(), true);
const int width = termpaint_text_measurement_last_width(m);
termpaint_text_measurement_free(m);
return width;
}
static void resolve_align(const Align align, const int width, const int height, const int xmin, const int xmax, const int ymin, const int ymax, int &x, int &y)
{
int available_width = xmax-xmin;
x = xmin;
if(((int)align & 0x0f) == (int)Align::HCenter)
x = (available_width - width) / 2;
else if(((int)align & 0x0f) == (int)Align::Right)
x = xmax - width;
int available_rows = ymax - ymin;
y = ymin;
if(((int)align & 0xf0) == (int)Align::VCenter)
y = (available_rows - height) / 2;
else if(((int)align & 0xf0) == (int)Align::Bottom)
y = ymax - height;
}
class surface_backup
{
int x, y;
int w, h;
termpaint_surface *backup;
public:
surface_backup(int x, int y, int w, int h): x(x), y(y), w(w), h(h), backup(termpaint_surface_new_surface(surface, w, h))
{
termpaint_surface_copy_rect(surface, x, y, w, h, backup, 0, 0, TERMPAINT_COPY_NO_TILE, TERMPAINT_COPY_NO_TILE);
}
~surface_backup()
{
termpaint_surface_copy_rect(backup, 0, 0, w, h, surface, x, y, TERMPAINT_COPY_NO_TILE, TERMPAINT_COPY_NO_TILE);
termpaint_surface_free(backup);
}
};
void draw_box_with_caption(int x, int y, int w, int h, const std::string &caption)
{
termpaint_surface_clear_rect(surface, x, y, w, h, TERMPAINT_DEFAULT_COLOR, TERMPAINT_DEFAULT_COLOR);
const int fill = w - 2;
const int endy = y+h;
for(int yy = y; yy<endy; yy++)
{
std::string s;
if(yy == y) {
s = "" + repeated(fill, "") + "";
} else if(yy + 1 == endy) {
s = "" + repeated(fill, "") + "";
} else {
s = "" + repeated(fill, " ") + "";
}
termpaint_surface_write_with_attr(surface, x, yy, s.c_str(), attributes[ASNormal].normal);
}
if(!caption.empty())
termpaint_surface_write_with_attr(surface, x+2, y, caption.c_str(), attributes[ASNormal].normal);
}
int get_selection(const std::string &caption, const std::vector<std::string> &entries, size_t selected, const Align align)
{
selected = std::max(size_t(0), std::min(entries.size(), selected));
size_t cols_needed = string_width(caption);
for(const auto &e: entries)
cols_needed = std::max(cols_needed, string_width(e));
cols_needed += 4; // Border and left/right padding
const int rows_needed = entries.size()+2; // Number of entries and top/bottom border
bool done = false;
bool force_repaint = false;
std::vector<action> actions = {
{TERMPAINT_EV_KEY, "ArrowUp", 0, [&](){ if(selected > 0) selected--; }, "Previous option"},
{TERMPAINT_EV_KEY, "ArrowDown", 0, [&](){ if(selected < entries.size() - 1) selected++; }, "Next option"},
{TERMPAINT_EV_KEY, "Escape", 0, [&](){ selected = -1; done = true; }, "Abort selection"},
{TERMPAINT_EV_KEY, "Enter", 0, [&](){ done = true; }, "Confirm selection"},
{EV_IGNORE, "1..9", 0, nullptr, "Select option 1..9"},
{TERMPAINT_EV_CHAR, "l", TERMPAINT_MOD_CTRL, [&](){ force_repaint = true; }, "Force redraw"},
};
while (!done) {
const int cols = termpaint_surface_width(surface);
const int rows = termpaint_surface_height(surface);
int x, y;
resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
surface_backup backup(x, y, cols_needed, rows_needed);
draw_box_with_caption(x, y, cols_needed, rows_needed, caption);
int yy = y+1;
size_t cur_entry = 0;
for(const auto &e: entries) {
termpaint_attr *attr = cur_entry == selected ? attributes[ASNormal].highlight : attributes[ASNormal].normal;
termpaint_surface_write_with_attr(surface, x+2, yy++, e.c_str(), attr);
cur_entry++;
}
termpaint_terminal_flush(terminal, force_repaint);
force_repaint = false;
auto event = wait_for_event(integration, 0);
if(!event)
abort();
if(!tui_handle_action(*event, actions)) {
if(event->type == TERMPAINT_EV_CHAR && event->string.length() == 1) {
char c = event->string[0];
if(c>'0' && c<='9') {
size_t idx = c - '0';
if(idx > entries.size())
continue;
selected = idx - 1;
done = true;
}
}
}
}
return selected;
}
Align operator|(const Align &a, const Align &b)
{
return Align((int)a | (int)b);
}
Button operator|(const Button &a, const Button &b)
{
return Button((int)a | (int)b);
}
Button operator&(const Button &a, const Button &b)
{
return Button((int)a & (int)b);
}
std::string edit_string(const std::string &caption, const std::string &text, const std::string &value, const Align align)
{
const int cols = termpaint_surface_width(surface);
const int rows = termpaint_surface_height(surface);
const size_t rows_needed = 3 + !text.empty();
const size_t cols_needed = cols/2;
int x, y;
resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
surface_backup backup(x, y, cols_needed, rows_needed);
const int input_row = y + 1 + !text.empty();
std::string input = value;
size_t input_pos = value.size();
termpaint_terminal_set_cursor_visible(terminal, true);
termpaint_terminal_set_cursor_style(terminal, TERMPAINT_CURSOR_STYLE_BAR, true);
bool done = false;
bool force_repaint = false;
std::vector<action> actions = {
{TERMPAINT_EV_KEY, "Home", 0, [&](){ input_pos = 0; }, "Go to beginning of input"},
{TERMPAINT_EV_CHAR, "a", TERMPAINT_MOD_CTRL, [&](){ input_pos = 0; }, "Go to beginning of input"},
{TERMPAINT_EV_KEY, "End", 0, [&](){ input_pos = input.size(); }, "Go to end of input"},
{TERMPAINT_EV_CHAR, "e", TERMPAINT_MOD_CTRL, [&](){ input_pos = input.size(); }, "Go to end of input"},
{TERMPAINT_EV_KEY, "ArrowLeft", 0, [&](){ if(input_pos > 0) input_pos--; }, "Move left"},
{TERMPAINT_EV_KEY, "ArrowRight", 0, [&](){ if(input_pos < input.size()) input_pos++; }, "Move right"},
// FIXME: Correctly handle deletion of clusters with more than one codepoint e.g. ° or ä
{TERMPAINT_EV_KEY, "Delete", 0, [&](){ if(input_pos < input.size()) { input.erase(input_pos, 1); } }, "Delete input forward"},
{TERMPAINT_EV_KEY, "Backspace", 0, [&](){ if(input_pos > 0) { input.erase(input_pos - 1, 1); input_pos--; }}, "Delete input backward"},
{TERMPAINT_EV_KEY, "Escape", 0, [&](){ input.clear(); done = true; }, "Abort input"},
{TERMPAINT_EV_KEY, "Enter", 0, [&](){ done = true; }, "Confirm input"},
{TERMPAINT_EV_CHAR, "l", TERMPAINT_MOD_CTRL, [&](){ force_repaint = true; }, "Force redraw"},
};
while(!done) {
draw_box_with_caption(x, y, cols_needed, rows_needed, caption);
if(!text.empty())
termpaint_surface_write_with_attr(surface, x + 1, y + 1, text.c_str(), attributes[ASNormal].normal);
termpaint_surface_write_with_attr(surface, x + 1, input_row, input.c_str(), attributes[ASNormal].normal);
termpaint_terminal_set_cursor_position(terminal, x + 1 + input_pos, input_row);
termpaint_terminal_flush(terminal, force_repaint);
force_repaint = false;
auto event = wait_for_event(integration, 0);
if(!event)
abort();
if(!tui_handle_action(*event, actions) && event->type != EV_TIMEOUT)
{
if(input_pos + 1 == cols_needed - 1)
continue;
if(event->type == TERMPAINT_EV_KEY) {
if(event->string == "Space")
event->string = " ";
else
continue;
}
input.insert(input_pos, event->string);
input_pos++;
}
}
termpaint_terminal_set_cursor_visible(terminal, false);
termpaint_terminal_set_cursor_style(terminal, TERMPAINT_CURSOR_STYLE_TERM_DEFAULT, false);
return input;
}
std::string get_string(const std::string &caption, const std::string &text, const Align align)
{
return edit_string(caption, text, std::string(), align);
}
std::vector<std::string> split(const std::string &str, const char delim, const unsigned int max_splits=0)
{
std::vector<std::string> parts;
std::string::const_iterator prev = str.cbegin();
std::string::const_iterator cur = str.cbegin();
unsigned int splits_done = 0;
do {
cur = std::find(prev, str.cend(), delim);
if(max_splits!=0 && splits_done>=max_splits) {
parts.emplace_back(prev, str.cend());
break;
}
parts.emplace_back(prev, cur);
splits_done++;
if(cur!=str.cend())
cur++;
prev = cur;
} while(cur!=str.cend());
return parts;
}
static const char *button_gfx_left[] = {"[", " "};
static const char *button_gfx_right[] = {"]", " "};
Button message_box(const std::string &caption, const std::string &text, const Button buttons, const Button default_button, const Align align)
{
std::vector<button_info> active_buttons;
size_t buttons_width = 0;
for(const button_info &info: all_buttons) {
if((buttons & info.button) == info.button) {
active_buttons.push_back(info);
buttons_width += info.width + 2 + 1;
}
}
if(buttons_width)
buttons_width -= 1;
size_t selected_button = std::distance(active_buttons.begin(),
std::find_if(active_buttons.begin(), active_buttons.end(),
[default_button](const button_info &info){ return info.button == default_button; }));
size_t width = std::max(string_width(caption), buttons_width);
const std::vector<std::string> lines = split(text, '\n');
for(const std::string &line: lines) {
width = std::max(width, string_width(line));
}
const size_t rows_needed = 4 + lines.size();
const size_t cols_needed = width + 4;
bool done = false;
bool force_repaint = false;
std::vector<action> actions;
if(active_buttons.size() > 1) {
actions = {
{TERMPAINT_EV_KEY, "Enter", 0, [&](){ done = true; }, "Confirm Selection"},
{TERMPAINT_EV_KEY, "ArrowLeft", 0, [&](){ if(selected_button > 0) selected_button--;}, "Previous option"},
{TERMPAINT_EV_KEY, "ArrowRight", 0, [&](){ if(selected_button < active_buttons.size() - 1) selected_button++; }, "Next option"},
{TERMPAINT_EV_CHAR, "l", TERMPAINT_MOD_CTRL, [&](){ force_repaint = true; }, "Force redraw"},
};
} else {
actions = {
{TERMPAINT_EV_KEY, "Enter", 0, [&](){ done = true; }, "Close dialog"},
{TERMPAINT_EV_CHAR, "l", TERMPAINT_MOD_CTRL, [&](){ force_repaint = true; }, "Force redraw"},
};
}
while(!done) {
const size_t cols = termpaint_surface_width(surface);
const size_t rows = termpaint_surface_height(surface);
int x, y;
resolve_align(align, cols_needed, rows_needed, 0, cols, 0, rows, x, y);
surface_backup backup(x, y, cols_needed, rows_needed);
draw_box_with_caption(x, y, cols_needed, rows_needed, caption);
for(size_t i=0; i<lines.size(); i++) {
termpaint_surface_write_with_attr(surface, x + 2, y + 1 + i, lines[i].c_str(), attributes[ASNormal].normal);
}
int button_x = x + 2;
for(size_t btn=0; btn<active_buttons.size(); btn++) {
const bool button_selected = selected_button == btn;
termpaint_attr *attr = button_selected ? attributes[ASNormal].highlight : attributes[ASNormal].normal;
termpaint_surface_write_with_attr(surface, button_x, y + rows_needed - 2, button_gfx_left[button_selected], attr);
termpaint_surface_write_with_attr(surface, button_x + 1, y + rows_needed - 2, active_buttons[btn].string.c_str(), attr);
termpaint_surface_write_with_attr(surface, button_x + active_buttons[btn].width + 1, y + rows_needed - 2, button_gfx_right[button_selected], attr);
button_x += active_buttons[btn].width + 2 + 1;
}
termpaint_terminal_flush(terminal, force_repaint);
force_repaint = false;
auto event = wait_for_event(integration, 0);
if(!event)
abort();
tui_handle_action(*event, actions);
}
return active_buttons[selected_button].button;
}
void tp_pause()
{
termpaint_terminal_pause(terminal);
}
void tp_unpause()
{
termpaint_terminal_unpause(terminal);
}
struct progress_info
{
Align align;
size_t width, height;
std::string caption;
int value, maxvalue;
};
static void draw_progress(progress_info *info)
{
const size_t cols = termpaint_surface_width(surface);
const size_t rows = termpaint_surface_height(surface);
int x, y;
resolve_align(info->align, info->width, info->height, 0, cols, 0, rows, x, y);
draw_box_with_caption(x, y, info->width, info->height, info->caption);
size_t progress_w = info->width - 4;
float progress = info->value / (float)info->maxvalue;
int full_blocks = progress_w * progress;
int partial_block = ((progress_w * progress) - full_blocks) * 8;
std::string draw = repeated(full_blocks, "");
switch(partial_block) {
case 1:
draw.append(""); break;
case 2:
draw.append(""); break;
case 3:
draw.append(""); break;
case 4:
draw.append(""); break;
case 5:
draw.append(""); break;
case 6:
draw.append(""); break;
case 7:
draw.append(""); break;
default:
break;
}
termpaint_surface_write_with_attr(surface, x + 2, y + 1, draw.c_str(), attributes[ASNormal].normal);
termpaint_terminal_flush(terminal, false);
}
progress_info* begin_progress(const std::string &caption, const int width, const Align align)
{
progress_info *info = new progress_info;
info->align = align;
info->width = width + 4;
info->height = 3;
info->caption = caption;
info->value = 0;
info->maxvalue = 100;
draw_progress(info);
return info;
}
void update_progress(progress_info *info, int value, int maxvalue)
{
info->value = value;
info->maxvalue = maxvalue;
draw_progress(info);
}
void end_progress(progress_info *info)
{
delete info;
}
std::pair<size_t, size_t> string_size(const std::string &str)
{
size_t width = 0;
const std::vector<std::string> lines = split(str, '\n');
for(const std::string &line: lines) {
width = std::max(width, string_width(line));
}
return {width, lines.size()};
}
void write_multiline_string(const int x, const int y, const std::string &str, termpaint_attr *attr)
{
const std::vector<std::string> lines = split(str, '\n');
for(size_t i=0; i<lines.size(); i++) {
termpaint_surface_write_with_attr(surface, x, y + i, lines[i].c_str(), attr);
}
}
std::string text_wrap(const std::string &text, const size_t desired_width)
{
std::string out;
termpaint_text_measurement *m = termpaint_text_measurement_new(surface);
size_t cur = 0;
size_t next = 0;
do {
next = text.find('\n', cur);
const std::string part = text.substr(cur, next - cur);
termpaint_text_measurement_reset(m);
termpaint_text_measurement_set_limit_width(m, desired_width);
if(termpaint_text_measurement_feed_utf8(m, part.data(), part.size(), true)) {
// Line doesn't fit as a whole
size_t partpos = 0;
do {
size_t fitting_bytes = termpaint_text_measurement_last_ref(m);
bool adjust = part[partpos + fitting_bytes - 1] != ' ';
if(adjust && partpos + fitting_bytes < part.size()) { // If we're inside the part only adjust if the last fitting char isn't the word boundary
adjust = part[partpos + fitting_bytes] != ' ' && part[partpos + fitting_bytes] != '\n';
} else { // Don't adjust at the end of the part
adjust = false;
}
while(adjust && part[partpos + fitting_bytes - 1] != ' ' && fitting_bytes > 0) { // If necessary scan backwards for a space.
fitting_bytes--;
}
if(fitting_bytes == 0) { // Can't be soft broken.
fitting_bytes = termpaint_text_measurement_last_ref(m); // Just get the last fitting character and hard break
adjust = false;
}
const std::string fragment = part.substr(partpos, fitting_bytes - adjust);
out.append(fragment).append("\n");
partpos += fitting_bytes;
termpaint_text_measurement_reset(m);
termpaint_text_measurement_set_limit_width(m, desired_width);
termpaint_text_measurement_feed_utf8(m, part.data() + partpos, part.size() - partpos + 1, partpos == part.size() - 1);
} while(partpos != part.size());
} else {
// Line fits as-is.
out.append(part).append("\n");
}
cur = next + 1;
} while(next != std::string::npos);
termpaint_text_measurement_free(m);
if(out.back() == '\n' && text.back() != '\n')
out.pop_back();
return out;
}
void tui_abort(const std::string &message)
{
const size_t cols = termpaint_surface_width(surface);
message_box("Error", text_wrap(message, cols/2));
exit(1);
}
static void pad_to_width(std::string &str, const size_t width)
{
const size_t current = string_width(str);
str.append(width-current, ' ');
}
struct helpitem {
std::string key;
std::string text;
};
static void draw_help(const std::vector<helpitem> &items)
{
const size_t rows = termpaint_surface_height(surface);
const size_t rows_per_column = rows / 3 * 2;
std::vector<std::vector<std::string>> column_texts;
const size_t text_columns = 1 + items.size() / rows_per_column;
size_t item = 0;
for(size_t column=0; column<text_columns; column++) {
const size_t items_this_column = std::min(items.size() - item, rows_per_column);
std::vector<std::string> texts;
size_t key_width = 0;
size_t text_width = 0;
for(size_t i=0; i<items_this_column; i++) {
key_width = std::max(string_width(items[item + i].key), key_width);
text_width = std::max(string_width(items[item + i].text), text_width);
}
for(size_t i=0; i<items_this_column; i++) {
std::string s = items[item].key;
pad_to_width(s, key_width);
s.append(" ");
s.append(items[item].text);
pad_to_width(s, key_width + 1 + text_width);
texts.push_back(s);
item++;
}
column_texts.push_back(texts);
}
std::string to_show;
for(size_t i=0; i<rows_per_column; i++) {
for(size_t column=0; column<text_columns; column++) {
if(i >= column_texts[column].size())
continue;
to_show.append(column_texts[column][i]);
if(column+1 < text_columns)
to_show.append(" ");
}
to_show.append("\n");
}
message_box("Help", to_show);
}
static std::string format_key(const action &action) {
std::string str;
if(action.modifier & TERMPAINT_MOD_CTRL)
str.append("C-");
if(action.modifier & TERMPAINT_MOD_ALT)
str.append("M-");
if(action.type == TERMPAINT_EV_KEY) {
auto it = key_symbols.find(action.string);
if(it == key_symbols.end())
str.append(action.string);
else
str.append(it->second);
} else {
str.append(action.string);
}
return str;
}
bool tui_handle_action(const Event &event, const std::vector<action> &actions)
{
if(event.type == EV_TIMEOUT)
return false;
const auto it = std::find_if(actions.cbegin(), actions.cend(), [&](const action &a) {
return a.type == event.type
&& a.string == event.string
&& event.modifier == a.modifier;
});
if(it == actions.cend()) {
if(event.type == TERMPAINT_EV_KEY && event.string == "F1") {
std::vector<helpitem> items = {{"F1", "Display this help"}};
for(const action &action: actions) {
if(action.help.empty())
continue;
items.push_back({format_key(action), action.help});
}
draw_help(items);
return true;
}
return false;
}
if(it->func)
it->func();
return true;
}
void tui_abort(const char *fmt, ...)
{
va_list ap, ap2;
va_start(ap, fmt);
va_copy(ap2, ap);
int required = vsnprintf(nullptr, 0, fmt, ap);
va_end(ap);
if(required < 0) {
va_end(ap2);
abort();
}
std::vector<char> buffer(required + 1, 0);
int written = vsnprintf(buffer.data(), required + 1, fmt, ap2);
if(written != required) {
va_end(ap2);
abort();
}
const std::string message(buffer.data());
const size_t cols = termpaint_surface_width(surface);
message_box("Error", text_wrap(message, cols*0.75f));
exit(1);
}