sort: support -h
function old new delta static.scale_suffix - 62 +62 .rodata 104304 104336 +32 compare_keys 820 848 +28 packed_usage 34159 34184 +25 static.suffix - 9 +9 sort_opt_str 37 38 +1 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 4/0 up/down: 157/0) Total: 157 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Denys Vlasenko
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cc7d2e2178
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34e0bb3931
@ -18,7 +18,7 @@
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//config: sort is used to sort lines of text in specified files.
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//config:
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//config:config FEATURE_SORT_BIG
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//config: bool "Full SuSv3 compliant sort (support -ktcbdfiogM)"
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//config: bool "Full SuSv3 compliant sort (support -ktcbdfioghM)"
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//config: default y
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//config: depends on SORT
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//config: help
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@ -43,7 +43,7 @@
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//usage:#define sort_trivial_usage
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//usage: "[-nru"
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//usage: IF_FEATURE_SORT_BIG("gMcszbdfiokt] [-o FILE] [-k START[.OFS][OPTS][,END[.OFS][OPTS]] [-t CHAR")
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//usage: IF_FEATURE_SORT_BIG("ghMcszbdfiokt] [-o FILE] [-k START[.OFS][OPTS][,END[.OFS][OPTS]] [-t CHAR")
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//usage: "] [FILE]..."
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//usage:#define sort_full_usage "\n\n"
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//usage: "Sort lines of text\n"
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@ -59,6 +59,7 @@
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//usage: "\n -n Sort numbers"
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//usage: IF_FEATURE_SORT_BIG(
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//usage: "\n -g General numerical sort"
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//usage: "\n -h Sort human readable numbers (2K 1G)"
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//usage: "\n -M Sort month"
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//usage: "\n -V Sort version"
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//usage: "\n -t CHAR Field separator"
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@ -94,31 +95,32 @@
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enum {
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FLAG_n = 1 << 0, /* Numeric sort */
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FLAG_g = 1 << 1, /* Sort using strtod() */
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FLAG_M = 1 << 2, /* Sort date */
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FLAG_V = 1 << 3, /* Sort version */
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FLAG_h = 1 << 2, /* Sort using strtod(), plus KMGT suffixes */
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FLAG_M = 1 << 3, /* Sort date */
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FLAG_V = 1 << 4, /* Sort version */
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/* ucsz apply to root level only, not keys. b at root level implies bb */
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FLAG_u = 1 << 4, /* Unique */
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FLAG_c = 1 << 5, /* Check: no output, exit(!ordered) */
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FLAG_s = 1 << 6, /* Stable sort, no ascii fallback at end */
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FLAG_z = 1 << 7, /* Input and output is NUL terminated, not \n */
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FLAG_u = 1 << 5, /* Unique */
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FLAG_c = 1 << 6, /* Check: no output, exit(!ordered) */
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FLAG_s = 1 << 7, /* Stable sort, no ascii fallback at end */
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FLAG_z = 1 << 8, /* Input and output is NUL terminated, not \n */
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/* These can be applied to search keys, the previous four can't */
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FLAG_b = 1 << 8, /* Ignore leading blanks */
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FLAG_r = 1 << 9, /* Reverse */
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FLAG_d = 1 << 10, /* Ignore !(isalnum()|isspace()) */
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FLAG_f = 1 << 11, /* Force uppercase */
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FLAG_i = 1 << 12, /* Ignore !isprint() */
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FLAG_m = 1 << 13, /* ignored: merge already sorted files; do not sort */
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FLAG_S = 1 << 14, /* ignored: -S, --buffer-size=SIZE */
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FLAG_T = 1 << 15, /* ignored: -T, --temporary-directory=DIR */
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FLAG_o = 1 << 16,
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FLAG_k = 1 << 17,
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FLAG_t = 1 << 18,
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FLAG_b = 1 << 9, /* Ignore leading blanks */
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FLAG_r = 1 << 10, /* Reverse */
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FLAG_d = 1 << 11, /* Ignore !(isalnum()|isspace()) */
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FLAG_f = 1 << 12, /* Force uppercase */
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FLAG_i = 1 << 13, /* Ignore !isprint() */
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FLAG_m = 1 << 14, /* ignored: merge already sorted files; do not sort */
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FLAG_S = 1 << 15, /* ignored: -S, --buffer-size=SIZE */
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FLAG_T = 1 << 16, /* ignored: -T, --temporary-directory=DIR */
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FLAG_o = 1 << 17,
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FLAG_k = 1 << 18,
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FLAG_t = 1 << 19,
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FLAG_bb = 0x80000000, /* Ignore trailing blanks */
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FLAG_no_tie_break = 0x40000000,
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};
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static const char sort_opt_str[] ALIGN1 = "^"
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"ngMVucszbrdfimS:T:o:k:*t:"
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"nghMVucszbrdfimS:T:o:k:*t:"
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"\0" "o--o:t--t"/*-t, -o: at most one of each*/;
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/*
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* OPT_STR must not be string literal, needs to have stable address:
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@ -253,6 +255,25 @@ static struct sort_key *add_key(void)
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#define GET_LINE(fp) xmalloc_fgetline(fp)
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#endif
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#if ENABLE_FEATURE_SORT_BIG
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static int scale_suffix(const char *tail)
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{
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static const char suffix[] ALIGN1 = "kmgtpezy";
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const char *s;
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int n;
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if (!tail[0])
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return -1;
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s = strchr(suffix, tail[0] | 0x20);
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if (!s)
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return -1;
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n = s - suffix;
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if (n != 0 && tail[0] >= 'a')
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return -1; /* mg... not accepted, only MG... */
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return n;
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}
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#endif
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/* Iterate through keys list and perform comparisons */
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static int compare_keys(const void *xarg, const void *yarg)
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{
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@ -275,7 +296,7 @@ static int compare_keys(const void *xarg, const void *yarg)
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y = *(char **)yarg;
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#endif
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/* Perform actual comparison */
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switch (flags & (FLAG_n | FLAG_g | FLAG_M | FLAG_V)) {
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switch (flags & (FLAG_n | FLAG_g | FLAG_h | FLAG_M | FLAG_V)) {
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default:
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bb_simple_error_msg_and_die("unknown sort type");
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break;
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@ -293,7 +314,8 @@ static int compare_keys(const void *xarg, const void *yarg)
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#endif
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break;
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#if ENABLE_FEATURE_SORT_BIG
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case FLAG_g: {
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case FLAG_g:
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case FLAG_h: {
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char *xx, *yy;
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//TODO: needs setlocale(LC_NUMERIC, "C")?
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double dx = strtod(x, &xx);
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@ -308,16 +330,26 @@ static int compare_keys(const void *xarg, const void *yarg)
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retval = (dy != dy) ? 0 : -1;
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else if (dy != dy)
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retval = 1;
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/* Check for infinity. Could underflow, but it avoids libm. */
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else if (1.0 / dx == 0.0) {
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if (dx < 0)
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retval = (1.0 / dy == 0.0 && dy < 0) ? 0 : -1;
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else {
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if (flags & FLAG_h) {
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int xs = scale_suffix(xx);
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int ys = scale_suffix(yy);
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if (xs != ys) {
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retval = xs - ys;
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break;
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}
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}
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/* Check for infinity. Could underflow, but it avoids libm. */
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if (1.0 / dx == 0.0) {
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if (dx < 0)
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retval = (1.0 / dy == 0.0 && dy < 0) ? 0 : -1;
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else
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retval = (1.0 / dy == 0.0 && dy > 0) ? 0 : 1;
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} else if (1.0 / dy == 0.0)
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retval = (dy < 0) ? 1 : -1;
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else
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retval = (1.0 / dy == 0.0 && dy > 0) ? 0 : 1;
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} else if (1.0 / dy == 0.0)
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retval = (dy < 0) ? 1 : -1;
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else
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retval = (dx > dy) ? 1 : ((dx < dy) ? -1 : 0);
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retval = (dx > dy) ? 1 : ((dx < dy) ? -1 : 0);
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}
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break;
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}
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case FLAG_M: {
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@ -476,6 +508,7 @@ int sort_main(int argc UNUSED_PARAM, char **argv)
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FLAG_allowed_for_k =
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FLAG_n | /* Numeric sort */
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FLAG_g | /* Sort using strtod() */
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FLAG_h | /* Sort using strtod(), plus KMGT suffixes */
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FLAG_M | /* Sort date */
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FLAG_b | /* Ignore leading blanks */
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FLAG_r | /* Reverse */
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@ -188,6 +188,35 @@ c 1
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d 2
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" ""
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testing "sort -h" \
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"sort -h input" "\
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3e
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4m
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5y
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1023
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1024
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1025
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3000
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2K
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3k
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1M
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2E
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1Y
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" "\
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1Y
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5y
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1M
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2E
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3k
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3e
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2K
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4m
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1023
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1025
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3000
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1024
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" ""
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# testing "description" "command(s)" "result" "infile" "stdin"
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exit $FAILCOUNT
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