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#include "screen.h"
#include "error.h"
#include "search.h"
static void print_message(Terminal *term, const ColorScheme *colors, const char *msg, bool is_error)
{
BuiltinColorEnum c = BC_COMMANDLINE;
if (msg[0]) {
c = is_error ? BC_ERRORMSG : BC_INFOMSG;
}
TermOutputBuffer *obuf = &term->obuf;
set_builtin_color(term, colors, c);
for (size_t i = 0; msg[i]; ) {
CodePoint u = u_get_char(msg, i + 4, &i);
if (!term_put_char(obuf, u)) {
break;
}
}
}
void show_message(Terminal *term, const ColorScheme *colors, const char *msg, bool is_error)
{
term_output_reset(term, 0, term->width, 0);
term_move_cursor(&term->obuf, 0, term->height - 1);
print_message(term, colors, msg, is_error);
term_clear_eol(term);
}
static size_t print_command(Terminal *term, const ColorScheme *colors, const CommandLine *cmdline, char prefix)
{
const String *buf = &cmdline->buf;
TermOutputBuffer *obuf = &term->obuf;
// Width of characters up to and including cursor position
size_t w = 1; // ":" (prefix)
for (size_t i = 0; i <= cmdline->pos && i < buf->len; ) {
CodePoint u = u_get_char(buf->buffer, buf->len, &i);
w += u_char_width(u);
}
if (cmdline->pos == buf->len) {
w++;
}
if (w > term->width) {
obuf->scroll_x = w - term->width;
}
set_builtin_color(term, colors, BC_COMMANDLINE);
term_put_char(obuf, prefix);
size_t x = obuf->x - obuf->scroll_x;
for (size_t i = 0; i < buf->len; ) {
BUG_ON(obuf->x > obuf->scroll_x + obuf->width);
CodePoint u = u_get_char(buf->buffer, buf->len, &i);
if (!term_put_char(obuf, u)) {
break;
}
if (i <= cmdline->pos) {
x = obuf->x - obuf->scroll_x;
}
}
return x;
}
void update_command_line(EditorState *e)
{
Terminal *term = &e->terminal;
char prefix = ':';
term_output_reset(term, 0, term->width, 0);
term_move_cursor(&term->obuf, 0, term->height - 1);
switch (e->input_mode) {
case INPUT_NORMAL: {
bool msg_is_error;
const char *msg = get_msg(&msg_is_error);
print_message(term, &e->colors, msg, msg_is_error);
break;
}
case INPUT_SEARCH:
prefix = e->search.reverse ? '?' : '/';
// Fallthrough
case INPUT_COMMAND:
e->cmdline_x = print_command(term, &e->colors, &e->cmdline, prefix);
break;
default:
BUG("unhandled input mode");
}
term_clear_eol(term);
}
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