| 1 | /* Output colorization.
|
|---|
| 2 | Copyright 2011-2012 Free Software Foundation, Inc.
|
|---|
| 3 |
|
|---|
| 4 | This program is free software; you can redistribute it and/or modify
|
|---|
| 5 | it under the terms of the GNU General Public License as published by
|
|---|
| 6 | the Free Software Foundation; either version 3, or (at your option)
|
|---|
| 7 | any later version.
|
|---|
| 8 |
|
|---|
| 9 | This program is distributed in the hope that it will be useful,
|
|---|
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 12 | GNU General Public License for more details.
|
|---|
| 13 |
|
|---|
| 14 | You should have received a copy of the GNU General Public License
|
|---|
| 15 | along with this program; if not, write to the Free Software
|
|---|
| 16 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
|
|---|
| 17 | 02110-1301, USA. */
|
|---|
| 18 |
|
|---|
| 19 | /* Without this pragma, gcc 4.7.0 20120102 suggests that the
|
|---|
| 20 | init_colorize function might be candidate for attribute 'const' */
|
|---|
| 21 | #if (__GNUC__ == 4 && 6 <= __GNUC_MINOR__) || 4 < __GNUC__
|
|---|
| 22 | # pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
|
|---|
| 23 | #endif
|
|---|
| 24 |
|
|---|
| 25 | #include <config.h>
|
|---|
| 26 |
|
|---|
| 27 | #include "colorize.h"
|
|---|
| 28 |
|
|---|
| 29 | #include <stdio.h>
|
|---|
| 30 | #include <stdlib.h>
|
|---|
| 31 | #include <string.h>
|
|---|
| 32 | #include <unistd.h>
|
|---|
| 33 |
|
|---|
| 34 | /* Return non-zero if we should highlight matches in output to file
|
|---|
| 35 | descriptor FD. */
|
|---|
| 36 | int
|
|---|
| 37 | should_colorize (void)
|
|---|
| 38 | {
|
|---|
| 39 | char const *t = getenv ("TERM");
|
|---|
| 40 | return t && strcmp (t, "dumb") != 0;
|
|---|
| 41 | }
|
|---|
| 42 |
|
|---|
| 43 | void init_colorize (void) { }
|
|---|
| 44 |
|
|---|
| 45 | /* Start a colorized text attribute on stdout using the SGR_START
|
|---|
| 46 | format; the attribute is specified by SGR_SEQ. */
|
|---|
| 47 | void
|
|---|
| 48 | print_start_colorize (char const *sgr_start, char const *sgr_seq)
|
|---|
| 49 | {
|
|---|
| 50 | printf (sgr_start, sgr_seq);
|
|---|
| 51 | }
|
|---|
| 52 |
|
|---|
| 53 | /* Restore the normal text attribute using the SGR_END string. */
|
|---|
| 54 | void
|
|---|
| 55 | print_end_colorize (char const *sgr_end)
|
|---|
| 56 | {
|
|---|
| 57 | fputs (sgr_end, stdout);
|
|---|
| 58 | }
|
|---|