static int launch_specified_editor(const char *editor, const char *path,
struct strbuf *buffer, const char *const *env)
{
if (!editor)
return error("Terminal is dumb, but EDITOR unset");
if (strcmp(editor, ":")) {
const char *args[] = { editor, real_path(path), NULL };
struct child_process p = CHILD_PROCESS_INIT;
int ret, sig;
int print_waiting_for_editor = advice_waiting_for_editor && isatty(2);
if (print_waiting_for_editor) {
/*
* A dumb terminal cannot erase the line later on. Add a
* newline to separate the hint from subsequent output.
*
* Make sure that our message is separated with a whitespace
* from further cruft that may be written by the editor.
*/
const char term = is_terminal_dumb() ? '\n' : ' ';
fprintf(stderr,
_("hint: Waiting for your editor to close the file...%c"),
term);
fflush(stderr);
}
p.argv = args;
p.env = env;
p.use_shell = 1;
if (start_command(&p) < 0)
return error("unable to start editor '%s'", editor);
sigchain_push(SIGINT, SIG_IGN);
sigchain_push(SIGQUIT, SIG_IGN);
ret = finish_command(&p);
sig = ret - 128;
sigchain_pop(SIGINT);
sigchain_pop(SIGQUIT);
if (sig == SIGINT || sig == SIGQUIT)
raise(sig);
if (ret)
return error("There was a problem with the editor '%s'.",
editor);
if (print_waiting_for_editor && !is_terminal_dumb())
/*
* Go back to the beginning and erase the entire line to
* avoid wasting the vertical space.
*/
fputs("\r\033[K", stderr);
}
if (!buffer)
return 0;
if (strbuf_read_file(buffer, path, 0) < 0)
return error_errno("could not read file '%s'", path);
return 0;
}
static int check_auto_color(void)
{
if (color_stdout_is_tty < 0)
color_stdout_is_tty = isatty(1);
if (color_stdout_is_tty || (pager_in_use() && pager_use_color)) {
if (!is_terminal_dumb())
return 1;
}
return 0;
}
const char *git_editor(void)
{
const char *editor = getenv("GIT_EDITOR");
int terminal_is_dumb = is_terminal_dumb();
if (!editor && editor_program)
editor = editor_program;
if (!editor && !terminal_is_dumb)
editor = getenv("VISUAL");
if (!editor)
editor = getenv("EDITOR");
if (!editor && terminal_is_dumb)
return NULL;
if (!editor)
editor = DEFAULT_EDITOR;
return editor;
}
int recv_sideband(const char *me, int in_stream, int out)
{
const char *suffix;
char buf[LARGE_PACKET_MAX + 1];
struct strbuf outbuf = STRBUF_INIT;
int retval = 0;
if (isatty(2) && !is_terminal_dumb())
suffix = ANSI_SUFFIX;
else
suffix = DUMB_SUFFIX;
while (!retval) {
const char *b, *brk;
int band, len;
len = packet_read(in_stream, NULL, NULL, buf, LARGE_PACKET_MAX, 0);
if (len == 0)
break;
if (len < 1) {
strbuf_addf(&outbuf,
"%s%s: protocol error: no band designator",
outbuf.len ? "\n" : "", me);
retval = SIDEBAND_PROTOCOL_ERROR;
break;
}
band = buf[0] & 0xff;
buf[len] = '\0';
len--;
switch (band) {
case 3:
strbuf_addf(&outbuf, "%s%s", outbuf.len ? "\n" : "",
DISPLAY_PREFIX);
maybe_colorize_sideband(&outbuf, buf + 1, len);
retval = SIDEBAND_REMOTE_ERROR;
break;
case 2:
b = buf + 1;
/*
* Append a suffix to each nonempty line to clear the
* end of the screen line.
*
* The output is accumulated in a buffer and
* each line is printed to stderr using
* write(2) to ensure inter-process atomicity.
*/
while ((brk = strpbrk(b, "\n\r"))) {
int linelen = brk - b;
if (!outbuf.len)
strbuf_addstr(&outbuf, DISPLAY_PREFIX);
if (linelen > 0) {
maybe_colorize_sideband(&outbuf, b, linelen);
strbuf_addstr(&outbuf, suffix);
}
strbuf_addch(&outbuf, *brk);
xwrite(2, outbuf.buf, outbuf.len);
strbuf_reset(&outbuf);
b = brk + 1;
}
if (*b) {
strbuf_addstr(&outbuf, outbuf.len ?
"" : DISPLAY_PREFIX);
maybe_colorize_sideband(&outbuf, b, strlen(b));
}
break;
case 1:
write_or_die(out, buf + 1, len);
break;
default:
strbuf_addf(&outbuf, "%s%s: protocol error: bad band #%d",
outbuf.len ? "\n" : "", me, band);
retval = SIDEBAND_PROTOCOL_ERROR;
break;
}
}
if (outbuf.len) {
strbuf_addch(&outbuf, '\n');
xwrite(2, outbuf.buf, outbuf.len);
}
strbuf_release(&outbuf);
return retval;
}
