wt-status: add helpers for printing wt-status lines
Introduce status_printf{,_ln,_more} wrapper functions around
color_vfprintf() which take care of adding "#" to the beginning of
status lines automatically. The semantics:
- status_printf() is just like color_fprintf() but it adds a "# "
at the beginning of each line of output;
- status_printf_ln() is a convenience function that additionally
adds "\n" at the end;
- status_printf_more() is a variant of status_printf() used to
continue lines that have already started. It suppresses the "#" at
the beginning of the first line.
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/wt-status.c b/wt-status.c
index 123582b..1abd7c3 100644
--- a/wt-status.c
+++ b/wt-status.c
@@ -32,6 +32,80 @@
return c;
}
+static void status_vprintf(struct wt_status *s, int at_bol, const char *color,
+ const char *fmt, va_list ap, const char *trail)
+{
+ struct strbuf sb = STRBUF_INIT;
+ struct strbuf linebuf = STRBUF_INIT;
+ const char *line, *eol;
+
+ strbuf_vaddf(&sb, fmt, ap);
+ if (!sb.len) {
+ strbuf_addch(&sb, '#');
+ if (!trail)
+ strbuf_addch(&sb, ' ');
+ color_print_strbuf(s->fp, color, &sb);
+ if (trail)
+ fprintf(s->fp, "%s", trail);
+ strbuf_release(&sb);
+ return;
+ }
+ for (line = sb.buf; *line; line = eol + 1) {
+ eol = strchr(line, '\n');
+
+ strbuf_reset(&linebuf);
+ if (at_bol) {
+ strbuf_addch(&linebuf, '#');
+ if (*line != '\n' && *line != '\t')
+ strbuf_addch(&linebuf, ' ');
+ }
+ if (eol)
+ strbuf_add(&linebuf, line, eol - line);
+ else
+ strbuf_addstr(&linebuf, line);
+ color_print_strbuf(s->fp, color, &linebuf);
+ if (eol)
+ fprintf(s->fp, "\n");
+ else
+ break;
+ at_bol = 1;
+ }
+ if (trail)
+ fprintf(s->fp, "%s", trail);
+ strbuf_release(&linebuf);
+ strbuf_release(&sb);
+}
+
+void status_printf_ln(struct wt_status *s, const char *color,
+ const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ status_vprintf(s, 1, color, fmt, ap, "\n");
+ va_end(ap);
+}
+
+void status_printf(struct wt_status *s, const char *color,
+ const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ status_vprintf(s, 1, color, fmt, ap, NULL);
+ va_end(ap);
+}
+
+void status_printf_more(struct wt_status *s, const char *color,
+ const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ status_vprintf(s, 0, color, fmt, ap, NULL);
+ va_end(ap);
+}
+
void wt_status_prepare(struct wt_status *s)
{
unsigned char sha1[20];
