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#include "minibuffer.h"
#include "binding.h"
#include "buffer.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;
struct keymap keymap;
} g_minibuffer = {0};
void draw_prompt(struct text_chunk *line_data, uint32_t line,
struct command_list *commands, void *userdata) {
uint32_t len = strlen(g_minibuffer.prompt);
command_list_set_index_color_fg(commands, 4);
command_list_draw_text(commands, 0, line, (uint8_t *)g_minibuffer.prompt,
len);
command_list_reset_color(commands);
}
int32_t execute(struct command_ctx ctx, int argc, const char *argv[]) {
if (g_minibuffer.prompt_active) {
struct text_chunk line = buffer_get_line(g_minibuffer.buffer, 0);
char *l = (char *)malloc(line.nbytes + 1);
memcpy(l, line.text, line.nbytes);
// split on ' '
const char *argv[128] = {l};
argc = 1;
for (uint32_t bytei = 0; bytei < line.nbytes; ++bytei) {
uint8_t byte = line.text[bytei];
if (byte == ' ') {
l[bytei] = '\0';
argv[argc] = l + bytei;
++argc;
}
}
minibuffer_abort_prompt();
struct command_ctx *ctx = &g_minibuffer.prompt_command_ctx;
uint32_t res = execute_command(ctx->self, ctx->commands, ctx->active_window,
ctx->buffers, argc, argv);
free(l);
return res;
} else {
return 0;
}
}
struct command execute_minibuffer_command = {
.fn = execute,
.name = "minibuffer-execute",
.userdata = NULL,
};
int32_t complete(struct command_ctx ctx, int argc, const char *argv[]) {
return 0;
}
struct command complete_minibuffer_command = {
.fn = complete,
.name = "minibuffer-complete",
.userdata = NULL,
};
struct update_hook_result update(struct buffer *buffer,
struct command_list *commands, uint32_t width,
uint32_t height, uint64_t frame_time,
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) {
buffer_clear(buffer);
}
struct update_hook_result res = {0};
if (g_minibuffer.prompt_active) {
res.margins.left = strlen(g_minibuffer.prompt);
res.line_render_hook.callback = draw_prompt;
}
return res;
}
void minibuffer_init(struct buffer *buffer) {
g_minibuffer.buffer = buffer;
struct binding bindings[] = {
ANONYMOUS_BINDING(Ctrl, 'M', &execute_minibuffer_command),
ANONYMOUS_BINDING(Ctrl, 'I', &complete_minibuffer_command),
};
keymap_bind_keys(&g_minibuffer.keymap, bindings,
sizeof(bindings) / sizeof(bindings[0]));
buffer_add_keymap(g_minibuffer.buffer, &g_minibuffer.keymap);
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) {
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_clear(g_minibuffer.buffer);
buffer_add_text(g_minibuffer.buffer, (uint8_t *)buff,
nbytes > 2048 ? 2048 : nbytes);
clock_gettime(CLOCK_MONOTONIC, &g_minibuffer.expires);
g_minibuffer.expires.tv_sec += timeout;
}
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_prompt(struct command_ctx command_ctx, const char *fmt, ...) {
minibuffer_clear();
g_minibuffer.prompt_active = true;
g_minibuffer.prompt_command_ctx = command_ctx;
va_list args;
va_start(args, fmt);
vsnprintf(g_minibuffer.prompt, sizeof(g_minibuffer.prompt), fmt, args);
va_end(args);
}
void minibuffer_abort_prompt() {
minibuffer_clear();
g_minibuffer.prompt_active = false;
}
bool minibuffer_displaying() { return !buffer_is_empty(g_minibuffer.buffer); }
void minibuffer_clear() { buffer_clear(g_minibuffer.buffer); }
bool minibuffer_focused() { return g_minibuffer.prompt_active; }
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