Commonalize typical [b,]k,m suffix struct

function                                             old     new   delta
bkm_suffixes                                           -      32     +32
static.km_suffixes                                    24       -     -24
suffixes                                              32       -     -32
static.bkm                                            32       -     -32
head_tail_suffixes                                    32       -     -32
------------------------------------------------------------------------------
(add/remove: 2/6 grow/shrink: 0/0 up/down: 72/-160)           Total: -88 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

11 files changed, 22 insertions, 58 deletions

diff --git a/TODO b/TODO
index 44364690f..b66a1c1cb 100644
--- a/TODO
+++ b/TODO
@@ -132,11 +132,6 @@ stty / catv
   stty's visible() function and catv's guts are identical. Merge them into
   an appropriate libbb function.
 ---
-struct suffix_mult
-  Several duplicate users of: grep -r "1024\*1024" * -B2 -A1
-  Merge to a single size_suffixes[] in libbb.
-  Users: head tail od_bloaty hexdump and (partially as it wouldn't hurt) svlogd
----
 tail
   ./busybox tail -f foo.c~ TODO
   should not print fmt=header_fmt for subsequent date >> TODO; i.e. only
diff --git a/coreutils/head.c b/coreutils/head.c
index 291e1ce37..9388b026a 100644
--- a/coreutils/head.c
+++ b/coreutils/head.c
@@ -12,7 +12,6 @@
 /* http://www.opengroup.org/onlinepubs/007904975/utilities/head.html */
 
 //kbuild:lib-$(CONFIG_HEAD) += head.o
-//kbuild:lib-$(CONFIG_HEAD) += head_tail.o
 
 //usage:#define head_trivial_usage
 //usage:       "[OPTIONS] [FILE]..."
@@ -35,7 +34,6 @@
 //usage:       "daemon:x:1:1:daemon:/usr/sbin:/bin/sh\n"
 
 #include "libbb.h"
-#include "head_tail.h"
 
 /* This is a NOEXEC applet. Be very careful! */
 
@@ -140,7 +138,7 @@ eat_num(bool *negative_N, const char *p)
                 p++;
         }
 #endif
-        return xatoul_sfx(p, head_tail_suffixes);
+        return xatoul_sfx(p, bkm_suffixes);
 }
 
 static const char head_opts[] ALIGN1 =
diff --git a/coreutils/head_tail.c b/coreutils/head_tail.c
deleted file mode 100644
index 1658c0d1b..000000000
--- a/coreutils/head_tail.c
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (C) 2013 Denys Vlasenko
- *
- * Licensed under GPLv2, see file LICENSE in this source tree.
- */
-#include "libbb.h"
-#include "head_tail.h"
-
-const struct suffix_mult head_tail_suffixes[] = {
-        { "b", 512 },
-        { "k", 1024 },
-        { "m", 1024*1024 },
-        { "", 0 }
-};
diff --git a/coreutils/head_tail.h b/coreutils/head_tail.h
deleted file mode 100644
index df19e41e0..000000000
--- a/coreutils/head_tail.h
+++ /dev/null
@@ -1,6 +0,0 @@
-/*
- * Copyright (C) 2013 Denys Vlasenko
- *
- * Licensed under GPLv2, see file LICENSE in this source tree.
- */
-extern const struct suffix_mult head_tail_suffixes[];
diff --git a/coreutils/od_bloaty.c b/coreutils/od_bloaty.c
index b408a8477..2c26dda16 100644
--- a/coreutils/od_bloaty.c
+++ b/coreutils/od_bloaty.c
@@ -1166,12 +1166,6 @@ parse_old_offset(const char *s, off_t *offset)
 int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int od_main(int argc UNUSED_PARAM, char **argv)
 {
-        static const struct suffix_mult bkm[] = {
-                { "b", 512 },
-                { "k", 1024 },
-                { "m", 1024*1024 },
-                { "", 0 }
-        };
 #if ENABLE_LONG_OPTS
         static const char od_longopts[] ALIGN1 =
                 "skip-bytes\0"        Required_argument "j"
@@ -1230,7 +1224,7 @@ int od_main(int argc UNUSED_PARAM, char **argv)
                 address_pad_len_char = doxn_address_pad_len_char[pos];
         }
         if (opt & OPT_N) {
-                max_bytes_to_format = xstrtooff_sfx(str_N, 0, bkm);
+                max_bytes_to_format = xstrtooff_sfx(str_N, 0, bkm_suffixes);
         }
         if (opt & OPT_a) decode_format_string("a");
         if (opt & OPT_b) decode_format_string("oC");
@@ -1239,7 +1233,7 @@ int od_main(int argc UNUSED_PARAM, char **argv)
         if (opt & OPT_f) decode_format_string("fF");
         if (opt & OPT_h) decode_format_string("x2");
         if (opt & OPT_i) decode_format_string("d2");
-        if (opt & OPT_j) n_bytes_to_skip = xstrtooff_sfx(str_j, 0, bkm);
+        if (opt & OPT_j) n_bytes_to_skip = xstrtooff_sfx(str_j, 0, bkm_suffixes);
         if (opt & OPT_l) decode_format_string("d4");
         if (opt & OPT_o) decode_format_string("o2");
         while (lst_t) {
@@ -1248,7 +1242,7 @@ int od_main(int argc UNUSED_PARAM, char **argv)
         if (opt & OPT_x) decode_format_string("x2");
         if (opt & OPT_s) decode_format_string("d2");
         if (opt & OPT_S) {
-                string_min = xstrtou_sfx(str_S, 0, bkm);
+                string_min = xstrtou_sfx(str_S, 0, bkm_suffixes);
         }
 
         // Bloat:
diff --git a/coreutils/split.c b/coreutils/split.c
index 11e640442..1e1673efb 100644
--- a/coreutils/split.c
+++ b/coreutils/split.c
@@ -23,17 +23,15 @@
 
 #include "libbb.h"
 
-static const struct suffix_mult split_suffices[] = {
 #if ENABLE_FEATURE_SPLIT_FANCY
+static const struct suffix_mult split_suffixes[] = {
         { "b", 512 },
-#endif
         { "k", 1024 },
         { "m", 1024*1024 },
-#if ENABLE_FEATURE_SPLIT_FANCY
         { "g", 1024*1024*1024 },
-#endif
         { "", 0 }
 };
+#endif
 
 /* Increment the suffix part of the filename.
  * Returns NULL if we are out of filenames.
@@ -86,7 +84,10 @@ int split_main(int argc UNUSED_PARAM, char **argv)
         if (opt & SPLIT_OPT_l)
                 cnt = XATOOFF(count_p);
         if (opt & SPLIT_OPT_b) // FIXME: also needs XATOOFF
-                cnt = xatoull_sfx(count_p, split_suffices);
+                cnt = xatoull_sfx(count_p,
+                                IF_FEATURE_SPLIT_FANCY(split_suffixes)
+                                IF_NOT_FEATURE_SPLIT_FANCY(km_suffixes)
+                );
         sfx = "x";
 
         argv += optind;
diff --git a/coreutils/tail.c b/coreutils/tail.c
index c9f9d00f6..07c71ca4b 100644
--- a/coreutils/tail.c
+++ b/coreutils/tail.c
@@ -25,7 +25,6 @@
  */
 
 //kbuild:lib-$(CONFIG_TAIL) += tail.o
-//kbuild:lib-$(CONFIG_TAIL) += head_tail.o
 
 //usage:#define tail_trivial_usage
 //usage:       "[OPTIONS] [FILE]..."
@@ -51,7 +50,6 @@
 //usage:       "nameserver 10.0.0.1\n"
 
 #include "libbb.h"
-#include "head_tail.h"
 
 struct globals {
         bool from_top;
@@ -89,7 +87,7 @@ static unsigned eat_num(const char *p)
                 p++;
                 G.from_top = 1;
         }
-        return xatou_sfx(p, head_tail_suffixes);
+        return xatou_sfx(p, bkm_suffixes);
 }
 
 int tail_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
diff --git a/include/libbb.h b/include/libbb.h
index 085210431..f22c1252b 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -832,6 +832,9 @@ struct suffix_mult {
         char suffix[4];
         unsigned mult;
 };
+extern const struct suffix_mult bkm_suffixes[];
+#define km_suffixes (bkm_suffixes + 1)
+
 #include "xatonum.h"
 /* Specialized: */
 
diff --git a/libbb/xatonum.c b/libbb/xatonum.c
index 62bbe53e7..6f4e023bb 100644
--- a/libbb/xatonum.c
+++ b/libbb/xatonum.c
@@ -68,3 +68,10 @@ uint16_t FAST_FUNC xatou16(const char *numstr)
 {
         return xatou_range(numstr, 0, 0xffff);
 }
+
+const struct suffix_mult bkm_suffixes[] = {
+        { "b", 512 },
+        { "k", 1024 },
+        { "m", 1024*1024 },
+        { "", 0 }
+};
diff --git a/runit/svlogd.c b/runit/svlogd.c
index b7a0a6e71..8b8a6d858 100644
--- a/runit/svlogd.c
+++ b/runit/svlogd.c
@@ -745,11 +745,6 @@ static NOINLINE unsigned logdir_open(struct logdir *ld, const char *fn)
                                 ld->inst = new;
                                 break;
                         case 's': {
-                                static const struct suffix_mult km_suffixes[] = {
-                                        { "k", 1024 },
-                                        { "m", 1024*1024 },
-                                        { "", 0 }
-                                };
                                 ld->sizemax = xatou_sfx(&s[1], km_suffixes);
                                 break;
                         }
diff --git a/util-linux/hexdump.c b/util-linux/hexdump.c
index 4d998b916..ac7e24ff8 100644
--- a/util-linux/hexdump.c
+++ b/util-linux/hexdump.c
@@ -66,13 +66,6 @@ static const char add_first[] ALIGN1 = "\"%07.7_Ax\n\"";
 
 static const char hexdump_opts[] ALIGN1 = "bcdoxCe:f:n:s:v" IF_FEATURE_HEXDUMP_REVERSE("R");
 
-static const struct suffix_mult suffixes[] = {
-        { "b", 512 },
-        { "k", 1024 },
-        { "m", 1024*1024 },
-        { "", 0 }
-};
-
 int hexdump_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int hexdump_main(int argc, char **argv)
 {
@@ -120,7 +113,7 @@ int hexdump_main(int argc, char **argv)
                                 optarg,
                                 /*base:*/ 0,
                                 /*lo:*/ 0, /*hi:*/ OFF_T_MAX,
-                                suffixes
+                                bkm_suffixes
                         );
                 } /* else */
                 if (ch == 'v') {