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sort: add -V "sort version"

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function                                             old     new   delta
packed_usage                                       32855   32858      +3
get_key                                              500     503      +3
sort_opt_str                                          36      37      +1
sort_main                                           1037    1036      -1
compare_keys                                         795     783     -12
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 3/2 up/down: 7/-13)              Total: -6 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-07-08 01:37:54 +02:00
parent 008e73b572
commit cbe8c65e59
1 changed files with 27 additions and 20 deletions
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47
coreutils/sort.c
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@ -60,6 +60,7 @@
//usage: IF_FEATURE_SORT_BIG(
//usage: "\n -g General numerical sort"
//usage: "\n -M Sort month"
//usage: "\n -V Sort version"
//usage: "\n -t CHAR Field separator"
//usage: "\n -k N[,M] Sort by Nth field"
//usage: )
@ -91,32 +92,33 @@
/* These are sort types */
enum {
FLAG_n = 1, /* Numeric sort */
FLAG_g = 2, /* Sort using strtod() */
FLAG_M = 4, /* Sort date */
FLAG_n = 1 << 0, /* Numeric sort */
FLAG_g = 1 << 1, /* Sort using strtod() */
FLAG_M = 1 << 2, /* Sort date */
FLAG_V = 1 << 3, /* Sort version */
/* ucsz apply to root level only, not keys. b at root level implies bb */
FLAG_u = 8, /* Unique */
FLAG_c = 0x10, /* Check: no output, exit(!ordered) */
FLAG_s = 0x20, /* Stable sort, no ascii fallback at end */
FLAG_z = 0x40, /* Input and output is NUL terminated, not \n */
FLAG_u = 1 << 4, /* Unique */
FLAG_c = 1 << 5, /* Check: no output, exit(!ordered) */
FLAG_s = 1 << 6, /* Stable sort, no ascii fallback at end */
FLAG_z = 1 << 7, /* Input and output is NUL terminated, not \n */
/* These can be applied to search keys, the previous four can't */
FLAG_b = 0x80, /* Ignore leading blanks */
FLAG_r = 0x100, /* Reverse */
FLAG_d = 0x200, /* Ignore !(isalnum()|isspace()) */
FLAG_f = 0x400, /* Force uppercase */
FLAG_i = 0x800, /* Ignore !isprint() */
FLAG_m = 0x1000, /* ignored: merge already sorted files; do not sort */
FLAG_S = 0x2000, /* ignored: -S, --buffer-size=SIZE */
FLAG_T = 0x4000, /* ignored: -T, --temporary-directory=DIR */
FLAG_o = 0x8000,
FLAG_k = 0x10000,
FLAG_t = 0x20000,
FLAG_b = 1 << 8, /* Ignore leading blanks */
FLAG_r = 1 << 9, /* Reverse */
FLAG_d = 1 << 10, /* Ignore !(isalnum()|isspace()) */
FLAG_f = 1 << 11, /* Force uppercase */
FLAG_i = 1 << 12, /* Ignore !isprint() */
FLAG_m = 1 << 13, /* ignored: merge already sorted files; do not sort */
FLAG_S = 1 << 14, /* ignored: -S, --buffer-size=SIZE */
FLAG_T = 1 << 15, /* ignored: -T, --temporary-directory=DIR */
FLAG_o = 1 << 16,
FLAG_k = 1 << 17,
FLAG_t = 1 << 18,
FLAG_bb = 0x80000000, /* Ignore trailing blanks */
FLAG_no_tie_break = 0x40000000,
};
static const char sort_opt_str[] ALIGN1 = "^"
"ngMucszbrdfimS:T:o:k:*t:"
"ngMVucszbrdfimS:T:o:k:*t:"
"\0" "o--o:t--t"/*-t, -o: at most one of each*/;
/*
* OPT_STR must not be string literal, needs to have stable address:
@ -273,10 +275,15 @@ static int compare_keys(const void *xarg, const void *yarg)
y = *(char **)yarg;
#endif
/* Perform actual comparison */
switch (flags & (FLAG_n | FLAG_M | FLAG_g)) {
switch (flags & (FLAG_n | FLAG_g | FLAG_M | FLAG_V)) {
default:
bb_error_msg_and_die("unknown sort type");
break;
#if defined(HAVE_STRVERSCMP) && HAVE_STRVERSCMP == 1
case FLAG_V:
retval = strverscmp(x, y);
break;
#endif
/* Ascii sort */
case 0:
#if ENABLE_LOCALE_SUPPORT