Mercurial > hg > toybox
diff toys/posix/wc.c @ 686:9414be56b1db
wc -m only cares about counting characters. Attached is a try on implementing it and some test cases for it. The test cases are only for UTF-8 locales.
| author | Felix Janda <felix.janda@posteo.de> |
|---|---|
| date | Thu, 08 Nov 2012 11:19:07 -0600 |
| parents | 7e846e281e38 |
| children | 786841fdb1e0 |
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--- a/toys/posix/wc.c Sat Nov 03 19:21:59 2012 -0500 +++ b/toys/posix/wc.c Thu Nov 08 11:19:07 2012 -0600 @@ -6,22 +6,24 @@ * * See http://opengroup.org/onlinepubs/9699919799/utilities/wc.html -USE_WC(NEWTOY(wc, "cwl", TOYFLAG_USR|TOYFLAG_BIN)) +USE_WC(NEWTOY(wc, "mcwl", TOYFLAG_USR|TOYFLAG_BIN)) config WC bool "wc" default y help - usage: wc -lwc [FILE...] + usage: wc -lwcm [FILE...] Count lines, words, and characters in input. -l show lines -w show words - -c show characters + -c show bytes + -m show characters - By default outputs lines, words, characters, and filename for each - argument (or from stdin if none). + By default outputs lines, words, bytes, and filename for each + argument (or from stdin if none). Displays only either bytes + or characters. */ #define FOR_wc @@ -47,7 +49,8 @@ static void do_wc(int fd, char *name) { - int i, len; + int i, len, clen=1, space; + wchar_t wchar; unsigned long word=0, lengths[]={0,0,0}; for (;;) { @@ -57,9 +60,24 @@ toys.exitval = EXIT_FAILURE; } if (len<1) break; - for (i=0; i<len; i++) { + for (i=0; i<len; i+=clen) { + if(toys.optflags&8) { + clen = mbrtowc(&wchar, toybuf+i, len-i, 0); + if(clen==(size_t)(-1)) { + if(i!=len-1) { + clen = 1; + continue; + } + else break; + } + if(clen==(size_t)(-2)) break; + if(clen==0) clen=1; + space = iswspace(wchar); + } + else space = isspace(toybuf[i]); + if (toybuf[i]==10) lengths[0]++; - if (isspace(toybuf[i])) word=0; + if (space) word=0; else { if (!word) lengths[1]++; word=1; @@ -73,6 +91,8 @@ void wc_main(void) { + setlocale(LC_ALL, ""); + toys.optflags |= (toys.optflags&8)>>1; loopfiles(toys.optargs, do_wc); if (toys.optc>1) show_lengths(TT.totals, "total"); }