Function show_line_header

grep.c:1205–1235

}

static void show_line_header(struct grep_opt *opt, const char *name,
			     unsigned lno, ssize_t cno, char sign)
{
	if (opt->heading && opt->last_shown == 0) {
		output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]);
		opt->output(opt, "\n", 1);
	}
	opt->last_shown = lno;

	if (!opt->heading && opt->pathname) {
		output_color(opt, name, strlen(name), opt->colors[GREP_COLOR_FILENAME]);
		output_sep(opt, sign);
	}
	if (opt->linenum) {
		char buf[32];
		xsnprintf(buf, sizeof(buf), "%d", lno);
		output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_LINENO]);
		output_sep(opt, sign);
	}
	/*
	 * Treat 'cno' as the 1-indexed offset from the start of a non-context
	 * line to its first match. Otherwise, 'cno' is 0 indicating that we are
	 * being called with a context line.
	 */
	if (opt->columnnum && cno) {
		char buf[32];
		xsnprintf(buf, sizeof(buf), "%"PRIuMAX, (uintmax_t)cno);
		output_color(opt, buf, strlen(buf), opt->colors[GREP_COLOR_COLUMNNO]);
		output_sep(opt, sign);
	}
}

static void show_line(struct grep_opt *opt,
		      const char *bol, const char *eol,