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ls: handle -d and -R through option_mask32

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function                                             old     new   delta
scan_and_display_dirs_recur                          545     550      +5
display_single                                      1039    1044      +5
append_char                                           67      68      +1
display_files                                        399     396      -3
ls_main                                              736     717     -19
opt_flags                                             68      11     -57
.rodata                                           168864  168784     -80
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/4 up/down: 11/-159)          Total: -148 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2017-01-23 20:08:22 +01:00
parent 96d9c5bdbd
commit 4cde4cca65
1 changed files with 17 additions and 29 deletions
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46
coreutils/ls.c
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@ -198,14 +198,12 @@ LIST_LONG = 1 << 0, /* long listing (-l and equivalents) */
/* what files will be displayed */
DISP_DIRNAME = 1 << 1, /* 2 or more items? label directories */
DISP_NOLIST = 1 << 2, /* show directory as itself, not contents */
DISP_RECURSIVE = 1 << 3, /* show directory and everything below it */
DISP_ROWS = 1 << 4, /* print across rows */
DISP_ROWS = 1 << 2, /* print across rows */
/* what is the overall style of the listing */
STYLE_COLUMNAR = 1 << 5, /* many records per line */
STYLE_LONG = 2 << 5, /* one record per line, extended info */
STYLE_SINGLE = 3 << 5, /* one record per line */
STYLE_COLUMNAR = 1 << 3, /* many records per line */
STYLE_LONG = 2 << 3, /* one record per line, extended info */
STYLE_SINGLE = 3 << 3, /* one record per line */
STYLE_MASK = STYLE_SINGLE,
};
@ -236,7 +234,7 @@ static const char ls_options[] ALIGN1 =
enum {
//OPT_C = (1 << 0),
OPT_a = (1 << 1),
//OPT_d = (1 << 2),
OPT_d = (1 << 2),
OPT_i = (1 << 3),
//OPT_1 = (1 << 4),
OPT_l = (1 << 5),
@ -292,10 +290,10 @@ enum {
};
/* TODO: simple toggles may be stored as OPT_xxx bits instead */
static const uint32_t opt_flags[] = {
static const uint8_t opt_flags[] = {
STYLE_COLUMNAR, /* C */
0, /* a */
DISP_NOLIST, /* d */
0, /* d */
0, /* i */
STYLE_SINGLE, /* 1 */
LIST_LONG | STYLE_LONG, /* l - by keeping it after -1, "ls -l -1" ignores -1 */
@ -303,20 +301,8 @@ static const uint32_t opt_flags[] = {
LIST_LONG | STYLE_LONG, /* n (numeris uid/gid) - handled via OPT_n. assumes l */
0, /* s */
DISP_ROWS | STYLE_COLUMNAR, /* x */
0, /* A */
0, /* k (ignored) */
#if ENABLE_FEATURE_LS_FILETYPES
0, /* F */
0, /* p */
#endif
#if ENABLE_FEATURE_LS_RECURSIVE
DISP_RECURSIVE, /* R */
#endif
#if ENABLE_SELINUX
0, /* Z */
#endif
(1U << 31)
/* options after Z are not processed through opt_flags */
0xff
/* options after -x are not processed through opt_flags */
};
@ -1048,7 +1034,9 @@ static void scan_and_display_dirs_recur(struct dnode **dn, int first)
struct dnode **subdnp;
for (; *dn; dn++) {
if (G.all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
if ((G.all_fmt & DISP_DIRNAME)
|| (option_mask32 & OPT_R)
) {
if (!first)
bb_putchar('\n');
first = 0;
@ -1067,7 +1055,7 @@ static void scan_and_display_dirs_recur(struct dnode **dn, int first)
sort_and_display_files(subdnp, nfiles);
if (ENABLE_FEATURE_LS_RECURSIVE
&& (G.all_fmt & DISP_RECURSIVE)
&& (option_mask32 & OPT_R)
) {
struct dnode **dnd;
unsigned dndirs;
@ -1165,7 +1153,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
if (opt & OPT_full_time ) bb_error_msg("--full-time");
exit(0);
#endif
for (i = 0; opt_flags[i] != (1U << 31); i++) {
for (i = 0; opt_flags[i] != 0xff; i++) {
if (opt & (1 << i)) {
uint32_t flags = opt_flags[i];
@ -1208,8 +1196,8 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
#endif
/* sort out which command line options take precedence */
if (ENABLE_FEATURE_LS_RECURSIVE && (G.all_fmt & DISP_NOLIST))
G.all_fmt &= ~DISP_RECURSIVE; /* no recurse if listing only dir */
if (ENABLE_FEATURE_LS_RECURSIVE && (opt & OPT_d))
option_mask32 &= ~OPT_R; /* no recurse if listing only dir */
if ((G.all_fmt & STYLE_MASK) != STYLE_LONG) { /* not -l? */
if (ENABLE_FEATURE_LS_TIMESTAMPS && ENABLE_FEATURE_LS_SORTFILES) {
/* when to sort by time? -t[cu] sorts by time even with -l */
@ -1270,7 +1258,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
break;
}
if (G.all_fmt & DISP_NOLIST) {
if (option_mask32 & OPT_d) {
sort_and_display_files(dnp, nfiles);
} else {
dnd = splitdnarray(dnp, SPLIT_DIR);