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#include "minibuffer.h"
#include "binding.h"
#include "buffer.h"
#include "buffer_view.h"
#include "command.h"
#include "display.h"
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static struct minibuffer {
struct buffer *buffer;
struct timespec expires;
char prompt[128];
struct command_ctx prompt_command_ctx;
bool prompt_active;
bool clear;
struct window *prev_window;
} g_minibuffer = {0};
uint32_t minibuffer_draw_prompt(struct command_list *commands) {
if (!g_minibuffer.prompt_active) {
return 0;
}
uint32_t len = strlen(g_minibuffer.prompt);
command_list_set_index_color_fg(commands, 4);
command_list_draw_text(commands, 0, 0, (uint8_t *)g_minibuffer.prompt, len);
command_list_reset_color(commands);
return len;
}
int32_t minibuffer_execute() {
if (g_minibuffer.prompt_active) {
struct command_ctx *c = &g_minibuffer.prompt_command_ctx;
struct text_chunk line = minibuffer_content();
char *l = (char *)malloc(line.nbytes + 1);
memcpy(l, line.text, line.nbytes);
l[line.nbytes] = '\0';
// propagate any saved arguments
char *argv[64];
for (uint32_t i = 0; i < c->saved_argc; ++i) {
argv[i] = (char *)c->saved_argv[i];
}
argv[c->saved_argc] = l;
uint32_t argc = c->saved_argc + (line.nbytes > 0 ? 1 : 0);
// split on ' '
for (uint32_t bytei = 0; bytei < line.nbytes; ++bytei) {
uint8_t byte = line.text[bytei];
if (byte == ' ' && argc < 64) {
l[bytei] = '\0';
argv[argc] = l + bytei + 1;
++argc;
}
}
minibuffer_abort_prompt();
int32_t res = execute_command(c->self, c->commands, c->active_window,
c->buffers, argc, (const char **)argv);
free(l);
return res;
} else {
return 0;
}
}
void update(struct buffer *buffer, void *userdata) {
struct timespec current;
struct minibuffer *mb = (struct minibuffer *)userdata;
clock_gettime(CLOCK_MONOTONIC, ¤t);
if ((!mb->prompt_active && current.tv_sec >= mb->expires.tv_sec) ||
mb->clear) {
buffer_clear(buffer);
mb->clear = false;
}
}
void minibuffer_init(struct buffer *buffer) {
if (g_minibuffer.buffer != NULL) {
return;
}
g_minibuffer.buffer = buffer;
g_minibuffer.clear = false;
buffer_add_update_hook(g_minibuffer.buffer, update, &g_minibuffer);
}
void echo(uint32_t timeout, const char *fmt, va_list args) {
if (g_minibuffer.prompt_active || g_minibuffer.buffer == NULL) {
return;
}
char buff[2048];
size_t nbytes = vsnprintf(buff, 2048, fmt, args);
// vsnprintf returns how many characters it would have wanted to write in case
// of overflow
buffer_set_text(g_minibuffer.buffer, (uint8_t *)buff,
nbytes > 2048 ? 2048 : nbytes);
g_minibuffer.clear = false;
clock_gettime(CLOCK_MONOTONIC, &g_minibuffer.expires);
g_minibuffer.expires.tv_sec += timeout;
}
void minibuffer_destroy() {
command_ctx_free(&g_minibuffer.prompt_command_ctx);
}
struct text_chunk minibuffer_content() {
return buffer_line(g_minibuffer.buffer, 0);
}
struct buffer *minibuffer_buffer() {
return g_minibuffer.buffer;
}
void minibuffer_echo(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
echo(1000, fmt, args);
va_end(args);
}
void minibuffer_echo_timeout(uint32_t timeout, const char *fmt, ...) {
va_list args;
va_start(args, fmt);
echo(timeout, fmt, args);
va_end(args);
}
void minibuffer_set_prompt_internal(const char *fmt, va_list args) {
vsnprintf(g_minibuffer.prompt, sizeof(g_minibuffer.prompt), fmt, args);
}
int32_t minibuffer_prompt(struct command_ctx command_ctx, const char *fmt,
...) {
if (g_minibuffer.buffer == NULL) {
return 1;
}
va_list args;
va_start(args, fmt);
minibuffer_clear();
g_minibuffer.prompt_active = true;
command_ctx_free(&g_minibuffer.prompt_command_ctx);
g_minibuffer.prompt_command_ctx = command_ctx;
minibuffer_set_prompt_internal(fmt, args);
if (windows_get_active() != minibuffer_window()) {
g_minibuffer.prev_window = windows_get_active();
windows_set_active(minibuffer_window());
}
va_end(args);
return 0;
}
void minibuffer_set_prompt(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
minibuffer_set_prompt_internal(fmt, args);
va_end(args);
}
void minibuffer_abort_prompt() {
minibuffer_clear();
g_minibuffer.prompt_active = false;
if (g_minibuffer.prev_window != NULL) {
windows_set_active(g_minibuffer.prev_window);
}
}
bool minibuffer_empty() { return !minibuffer_displaying(); }
bool minibuffer_displaying() {
return g_minibuffer.buffer != NULL && !buffer_is_empty(g_minibuffer.buffer);
}
void minibuffer_clear() {
g_minibuffer.expires.tv_sec = 0;
g_minibuffer.clear = true;
}
bool minibuffer_focused() { return g_minibuffer.prompt_active; }
struct window *minibuffer_target_window() {
return g_minibuffer.prev_window;
}
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