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authorRob Landley <rob@landley.net>2011-11-17 07:26:22 -0600
committerRob Landley <rob@landley.net>2011-11-17 07:26:22 -0600
commitf8a333e3c002e05966fb3ec13029f528df7a892d (patch)
tree35d890d869be5ed7bfc9cf84118baf6b50abca01 /toys/wc.c
parent1208ca7ac8ec14cb32ad42e2ef550e4ae464dc42 (diff)
downloadtoybox-f8a333e3c002e05966fb3ec13029f528df7a892d.tar.gz
Add wc.
Diffstat (limited to 'toys/wc.c')
-rw-r--r--toys/wc.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/toys/wc.c b/toys/wc.c
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+/* vi: set sw=4 ts=4:
+ *
+ * wc.c - Word countA hello world program.
+ *
+ * Copyright 2011Rob Landley <rob@landley.net>
+ *
+ * See http://opengroup.org/onlinepubs/9699919799/utilities/wc.html
+
+USE_WC(NEWTOY(wc, "cwl", TOYFLAG_USR|TOYFLAG_BIN))
+
+config WC
+ bool "wc"
+ default y
+ help
+ usage: wc -lwc [FILE...]
+
+ Count lines, words, and characters in input.
+
+ -l show lines
+ -w show words
+ -c show characters
+
+ By default outputs lines, words, characters, and filename for each
+ argument (or from stdin if none).
+*/
+
+#include "toys.h"
+
+static void do_wc(int fd, char *name)
+{
+ int i, len;
+ unsigned long word=0, lengths[]={0,0,0};
+
+ for (;;) {
+ len = read(fd, toybuf, sizeof(toybuf));
+ if (len<0) {
+ perror_msg("%s",name);
+ toys.exitval = EXIT_FAILURE;
+ }
+ if (len<1) break;
+ for (i=0; i<len; i++) {
+ if (toybuf[i]==10) lengths[0]++;
+ if (isspace(toybuf[i])) word=0;
+ else {
+ if (!word) lengths[1]++;
+ word=1;
+ }
+ lengths[2]++;
+ }
+ }
+ for (i=0; i<3; i++)
+ if (!toys.optflags || (toys.optflags&(1<<i)))
+ printf("%ld ", lengths[i]);
+ printf("%s\n", (!toys.optflags && strcmp(name,"-")) ? name : "");
+}
+
+void wc_main(void)
+{
+ loopfiles(toys.optargs, do_wc);
+}