Hadeed Ahmad
c10f4a243b
Got stuck on a bug for a while, fix was to check for errors when using system calls. Lesson learned.
128 lines
2.9 KiB
C
128 lines
2.9 KiB
C
#define _POSIX_C_SOURCE 199309L
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#include <ctype.h>
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#include <signal.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include "buffer.h"
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#include "input.h"
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#include "kilo.h"
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#include "terminal.h"
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#include "ui.h"
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#include "utils.h"
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void editor_init(char *filename);
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void editor_resize();
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struct editor_state E;
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int main(int argc, char **argv) {
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editor_init(argc >= 2 ? argv[1] : NULL);
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while (true) {
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ui_draw_screen();
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input_process_key(terminal_read_key());
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}
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return 0;
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}
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void editor_init(char *filename) {
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if (!isatty(STDIN_FILENO)) {
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printf("kilo only supports a terminal at standard in. Exiting.");
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exit(1);
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}
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if (terminal_enable_raw() == -1) die("term_enable_raw");
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if (terminal_get_win_size(&E.screenrows, &E.screencols) == -1)
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die("term_get_win_size");
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E.quit_times = 3;
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E.current_buf = buffer_create();
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if (filename)
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buffer_read_file(E.current_buf, filename);
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editor_set_message("Welcome to kilo! | CTRL-Q: Quit | CTRL-S: SAVE");
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terminal_clear();
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struct sigaction sa;
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sa.sa_handler = editor_resize;
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sigaction(SIGWINCH, &sa, NULL);
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}
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void editor_set_message(const char *fmt, ...) {
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va_list ap;
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va_start(ap, fmt);
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vsnprintf(E.message, sizeof(E.message), fmt, ap);
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va_end(ap);
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E.message_time = time(NULL);
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}
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// TODO: This could use some work
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char *editor_prompt(const char *prompt) {
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size_t buf_cap = 64;
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size_t buf_size = 0;
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char *buf = malloc(buf_cap);
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char *prompt_prefix = strstr(prompt, "%s");
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int prefix_len = (prompt_prefix ? prompt_prefix - prompt : 0);
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buf[buf_size] = '\0';
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while (true) {
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editor_set_message(prompt, buf);
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ui_draw_screen();
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if (prompt_prefix)
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terminal_set_cursor_pos(E.screenrows + 2, prefix_len + buf_size + 1);
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KEY key = terminal_read_key();
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switch (key) {
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case BACKSPACE:
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if (buf_size > 0)
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buf[--buf_size] = '\0';
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break;
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case ENTER:
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if (buf_size > 0) goto success;
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else goto failure;
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break;
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case ESCAPE:
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goto failure;
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break;
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default:
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if (isprint(key)) {
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if (buf_size + 1 >= buf_cap)
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buf = realloc(buf, buf_cap *= 2);
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buf[buf_size] = key;
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buf_size++;
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buf[buf_size] = '\0';
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}
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}
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}
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failure:
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free(buf);
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buf = NULL;
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success:
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if (buf)
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buf = realloc(buf, buf_size + 1);
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editor_set_message("");
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return buf;
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}
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void editor_resize() {
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if (terminal_get_win_size(&E.screenrows, &E.screencols) == -1)
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die("term_get_win_size");
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ui_draw_screen();
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}
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