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ls: make --color more compatible with coreutils

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function                                             old     new   delta
static.color_str                                       -      34     +34
static.ls_longopts                                     -       9      +9
ls_color_opt                                           9       -      -9
ls_main                                              865     843     -22
------------------------------------------------------------------------------
(add/remove: 2/1 grow/shrink: 0/1 up/down: 43/-31)             Total: 12 bytes
   text    data     bss     dec     hex filename
 820145     450    7692  828287   ca37f busybox_old
 820144     450    7692  828286   ca37e busybox_unstripped

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-07-03 12:22:19 +02:00
parent 5508363fd0
commit ae05dd42ca
1 changed files with 34 additions and 20 deletions
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54
coreutils/ls.c
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@ -898,16 +898,6 @@ static int list_single(const struct dnode *dn)
}
/* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
#if ENABLE_FEATURE_LS_COLOR
/* long option entry used only for --color, which has no short option
* equivalent */
static const char ls_color_opt[] ALIGN1 =
"color\0" Optional_argument "\xff" /* no short equivalent */
;
#endif
int ls_main(int argc UNUSED_PARAM, char **argv)
{
struct dnode **dnd;
@ -920,8 +910,25 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
int dnfiles;
int dndirs;
int i;
#if ENABLE_FEATURE_LS_COLOR
/* colored LS support by JaWi, janwillem.janssen@lxtreme.nl */
/* coreutils 6.10:
* # ls --color=BOGUS
* ls: invalid argument 'BOGUS' for '--color'
* Valid arguments are:
* 'always', 'yes', 'force'
* 'never', 'no', 'none'
* 'auto', 'tty', 'if-tty'
* (and substrings: "--color=alwa" work too)
*/
static const char ls_longopts[] ALIGN1 =
"color\0" Optional_argument "\xff"; /* no short equivalent */
static const char color_str[] ALIGN1 =
"always\0""yes\0""force\0"
"auto\0""tty\0""if-tty\0";
/* need to initialize since --color has _an optional_ argument */
IF_FEATURE_LS_COLOR(const char *color_opt = "always";)
const char *color_opt = color_str; /* "always" */
#endif
INIT_G();
@ -929,14 +936,14 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
(ENABLE_FEATURE_LS_SORTFILES * (SORT_NAME | SORT_FORWARD));
#if ENABLE_FEATURE_AUTOWIDTH
/* Obtain the terminal width */
/* obtain the terminal width */
get_terminal_width_height(STDIN_FILENO, &terminal_width, NULL);
/* Go one less... */
/* go one less... */
terminal_width--;
#endif
/* process options */
IF_FEATURE_LS_COLOR(applet_long_options = ls_color_opt;)
IF_FEATURE_LS_COLOR(applet_long_options = ls_longopts;)
#if ENABLE_FEATURE_AUTOWIDTH
opt_complementary = "T+:w+"; /* -T N, -w N */
opt = getopt32(argv, ls_options, &tabstops, &terminal_width
@ -975,13 +982,20 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
if (!p || (p[0] && strcmp(p, "none") != 0))
show_color = 1;
}
if (opt & OPT_color) { /* next flag after short options */
if (strcmp("always", color_opt) == 0)
show_color = 1;
else if (strcmp("never", color_opt) == 0)
if (opt & OPT_color) {
if (color_opt[0] == 'n')
show_color = 0;
else if (strcmp("auto", color_opt) == 0 && isatty(STDOUT_FILENO))
show_color = 1;
else switch (index_in_substrings(color_str, color_opt)) {
case 3:
case 4:
case 5:
if (isatty(STDOUT_FILENO)) {
case 0:
case 1:
case 2:
show_color = 1;
}
}
}
#endif