diff options
| author | Denis Vlasenko <vda.linux@googlemail.com> | 2008-05-03 07:21:27 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2008-05-03 07:21:27 +0000 |
| commit | 96b99b860cc15f13b85b1b2d5b5b20ab7183a652 (patch) | |
| tree | f7f5236085dcc40f02bd29078900d971a787344e /coreutils/uniq.c | |
| parent | 687a26fe0dcf10f227cb0541882d1daa8a21991d (diff) | |
uniq: support -w. closes bug 3094.
function old new delta
packed_usage 24136 24132 -4
uniq_main 399 384 -15
Diffstat (limited to 'coreutils/uniq.c')
| -rw-r--r-- | coreutils/uniq.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/coreutils/uniq.c b/coreutils/uniq.c index 32327c6ce..41f1fed7b 100644 --- a/coreutils/uniq.c +++ b/coreutils/uniq.c @@ -12,8 +12,6 @@ #include "libbb.h" -static const char uniq_opts[] ALIGN1 = "cdu" "f:s:" "cdu\0\1\2\4"; - static FILE *xgetoptfile_uniq_s(char **argv, int read0write2) { const char *n; @@ -31,9 +29,11 @@ int uniq_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int uniq_main(int argc ATTRIBUTE_UNUSED, char **argv) { FILE *in, *out; - unsigned long dups, skip_fields, skip_chars, i; const char *s0, *e0, *s1, *e1, *input_filename; + unsigned long dups; + unsigned skip_fields, skip_chars, max_chars; unsigned opt; + unsigned i; enum { OPT_c = 0x1, @@ -41,15 +41,14 @@ int uniq_main(int argc ATTRIBUTE_UNUSED, char **argv) OPT_u = 0x4, OPT_f = 0x8, OPT_s = 0x10, + OPT_w = 0x20, }; skip_fields = skip_chars = 0; + max_chars = -1; - opt = getopt32(argv, "cduf:s:", &s0, &s1); - if (opt & OPT_f) - skip_fields = xatoul(s0); - if (opt & OPT_s) - skip_chars = xatoul(s1); + opt_complementary = "f+:s+:w+"; + opt = getopt32(argv, "cduf:s:w:", &skip_fields, &skip_chars, &max_chars); argv += optind; input_filename = *argv; @@ -63,7 +62,7 @@ int uniq_main(int argc ATTRIBUTE_UNUSED, char **argv) bb_show_usage(); } - s1 = e1 = NULL; /* prime the pump */ + s1 = e1 = NULL; /* prime the pump */ do { s0 = s1; @@ -81,16 +80,16 @@ int uniq_main(int argc ATTRIBUTE_UNUSED, char **argv) ++e1; } - if (!s0 || strcmp(e0, e1)) { + if (!s0 || strncmp(e0, e1, max_chars)) { break; } - ++dups; /* Note: Testing for overflow seems excessive. */ + ++dups; /* note: testing for overflow seems excessive. */ } if (s0) { if (!(opt & (OPT_d << !!dups))) { /* (if dups, opt & OPT_e) */ - fprintf(out, "\0%d " + (opt & 1), dups + 1); + fprintf(out, "\0%ld " + (opt & 1), dups + 1); /* 1 == OPT_c */ fprintf(out, "%s\n", s0); } free((void *)s0); |