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authorStrake <devnull@localhost>2013-07-26 18:23:08 -0500
committerStrake <devnull@localhost>2013-07-26 18:23:08 -0500
commit50a0daae792c9586d669aa729752beecbf5d18e7 (patch)
tree3a61b37e18b9a7fd122911cfd0c81279ae1bd940 /toys
parent00385c4f6a3b8b7aeb4b148cad687dae92512597 (diff)
downloadtoybox-50a0daae792c9586d669aa729752beecbf5d18e7.tar.gz
add nl
Diffstat (limited to 'toys')
-rw-r--r--toys/pending/nl.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/toys/pending/nl.c b/toys/pending/nl.c
new file mode 100644
index 00000000..a698c863
--- /dev/null
+++ b/toys/pending/nl.c
@@ -0,0 +1,101 @@
+/* nl.c - print line numbers
+ *
+ * Copyright 2013 CE Strake <strake888@gmail.com>
+ *
+ * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/
+ * See http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/cmdbehav.html
+
+USE_NL(NEWTOY(nl, "Eb:n:s:w#", TOYFLAG_BIN))
+
+config NL
+ bool "nl"
+ default n
+ help
+ usage: nl [-E] [-b mode] [-n (r|l)(n|z)] [-s separator] [-w width]
+
+ modes: give numbers to
+ a: all lines
+ t: non-empty lines
+ n: no lines
+ pRE: lines what match regex RE
+
+ flags:
+ E: extended RE syntax
+*/
+
+#define FOR_nl
+#include "toys.h"
+#include <regex.h>
+
+GLOBALS(
+ long wArgu;
+ char *sArgu, *nArgu, *bArgu, *re_xs;
+ char fmt[5];
+)
+
+char s = '\t';
+long width = 6;
+regex_t re; /* fails in GLOBALS */
+
+void do_nl (int fd, char *name) {
+ char *x;
+ FILE *f;
+ long n = 0;
+
+ f = fdopen (fd, "r");
+ if (!f) perror_exit ("failed to open %s", name);
+
+ x = 0;
+ for (;;) {
+ size_t l;
+ if (getline (&x, &l, f) < 0) {
+ if (feof (f)) break;
+ perror_exit ("failed to read");
+ }
+ if (TT.re_xs && regexec (&re, x, 0, 0, 0) == 0) printf (TT.fmt, width, ++n);
+ printf ("%c%s", s, x);
+ }
+
+ free (x);
+ fclose (f);
+}
+
+void nl_main (void) {
+ if (toys.optflags & FLAG_w) width = TT.wArgu;
+
+ if (TT.sArgu) s = TT.sArgu[0];
+
+ if (!TT.nArgu) TT.nArgu = "rn";
+
+ if (TT.bArgu) switch (TT.bArgu[0]) {
+ case 'a':
+ TT.re_xs = "";
+ break;
+ case 't':
+ TT.re_xs = ".\n";
+ break;
+ case 'n':
+ TT.re_xs = 0;
+ break;
+ case 'p':
+ TT.re_xs = TT.bArgu + 1;
+ break;
+ default:
+ error_exit ("bad mode: %c", TT.bArgu[0]);
+ }
+ else TT.re_xs = ".\n";
+
+ if (TT.re_xs &&
+ regcomp (&re, TT.re_xs,
+ REG_NOSUB |
+ (toys.optflags & FLAG_E ? REG_EXTENDED : 0)) != 0) {
+ error_exit ("bad RE");
+ }
+
+ strcpy (TT.fmt, "%");
+ if (TT.nArgu[0] == 'l') strcat (TT.fmt, "-");
+ if (TT.nArgu[1] == 'z') strcat (TT.fmt, "0");
+ strcat (TT.fmt, "*d");
+
+ loopfiles (toys.optargs, do_nl);
+}