Mercurial > hg > toybox
annotate toys/wc.c @ 587:82ffae226c40
Convert another realpath use to xrealpath().
| author | Rob Landley <rob@landley.net> |
|---|---|
| date | Fri, 01 Jun 2012 17:59:11 -0500 |
| parents | 67b0ded3c56c |
| children |
| rev | line source |
|---|---|
| 386 | 1 /* vi: set sw=4 ts=4: |
| 2 * | |
|
387
67b0ded3c56c
Add dirname, and typo fixes to wc header.
Rob Landley <rob@landley.net>
parents:
386
diff
changeset
|
3 * wc.c - Word count |
| 386 | 4 * |
|
387
67b0ded3c56c
Add dirname, and typo fixes to wc header.
Rob Landley <rob@landley.net>
parents:
386
diff
changeset
|
5 * Copyright 2011 Rob Landley <rob@landley.net> |
| 386 | 6 * |
| 7 * See http://opengroup.org/onlinepubs/9699919799/utilities/wc.html | |
| 8 | |
| 9 USE_WC(NEWTOY(wc, "cwl", TOYFLAG_USR|TOYFLAG_BIN)) | |
| 10 | |
| 11 config WC | |
| 12 bool "wc" | |
| 13 default y | |
| 14 help | |
| 15 usage: wc -lwc [FILE...] | |
| 16 | |
| 17 Count lines, words, and characters in input. | |
| 18 | |
| 19 -l show lines | |
| 20 -w show words | |
| 21 -c show characters | |
| 22 | |
| 23 By default outputs lines, words, characters, and filename for each | |
| 24 argument (or from stdin if none). | |
| 25 */ | |
| 26 | |
| 27 #include "toys.h" | |
| 28 | |
| 29 static void do_wc(int fd, char *name) | |
| 30 { | |
| 31 int i, len; | |
| 32 unsigned long word=0, lengths[]={0,0,0}; | |
| 33 | |
| 34 for (;;) { | |
| 35 len = read(fd, toybuf, sizeof(toybuf)); | |
| 36 if (len<0) { | |
| 37 perror_msg("%s",name); | |
| 38 toys.exitval = EXIT_FAILURE; | |
| 39 } | |
| 40 if (len<1) break; | |
| 41 for (i=0; i<len; i++) { | |
| 42 if (toybuf[i]==10) lengths[0]++; | |
| 43 if (isspace(toybuf[i])) word=0; | |
| 44 else { | |
| 45 if (!word) lengths[1]++; | |
| 46 word=1; | |
| 47 } | |
| 48 lengths[2]++; | |
| 49 } | |
| 50 } | |
| 51 for (i=0; i<3; i++) | |
| 52 if (!toys.optflags || (toys.optflags&(1<<i))) | |
| 53 printf("%ld ", lengths[i]); | |
| 54 printf("%s\n", (!toys.optflags && strcmp(name,"-")) ? name : ""); | |
| 55 } | |
| 56 | |
| 57 void wc_main(void) | |
| 58 { | |
| 59 loopfiles(toys.optargs, do_wc); | |
| 60 } |