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authorElie De Brauwer <eliedebrauwer@gmail.com>2012-12-16 17:58:25 +0100
committerElie De Brauwer <eliedebrauwer@gmail.com>2012-12-16 17:58:25 +0100
commit434d35197957969ee200fff0424807c1a97e7d2d (patch)
tree5f646699181fbbad9d8d8e0c13c1146af75a1b69 /toys/lsb
parentde08aef53c4611de5b64b332ac6c1b9c920b7d0b (diff)
downloadtoybox-434d35197957969ee200fff0424807c1a97e7d2d.tar.gz
Extend seq to support -f (format string) and -s (string separator) as requested by LSB
Diffstat (limited to 'toys/lsb')
-rw-r--r--toys/lsb/seq.c25
1 files changed, 21 insertions, 4 deletions
diff --git a/toys/lsb/seq.c b/toys/lsb/seq.c
index 7faea185..2aac4bbf 100644
--- a/toys/lsb/seq.c
+++ b/toys/lsb/seq.c
@@ -4,26 +4,36 @@
*
* http://refspecs.linuxfoundation.org/LSB_4.1.0/LSB-Core-generic/LSB-Core-generic/seq.html
-USE_SEQ(NEWTOY(seq, "<1>3?", TOYFLAG_USR|TOYFLAG_BIN))
+USE_SEQ(NEWTOY(seq, "<1>3?f:s:", TOYFLAG_USR|TOYFLAG_BIN))
config SEQ
bool "seq"
depends on TOYBOX_FLOAT
default y
help
- usage: seq [first] [increment] last
+ usage: seq [-f fmt_str] [-s sep_str] [first] [increment] last
Count from first to last, by increment. Omitted arguments default
to 1. Two arguments are used as first and last. Arguments can be
negative or floating point.
+ -f Use fmt_str as a floating point format string
+ -s Use sep_str as separator, default is a newline character
*/
+#define FOR_seq
#include "toys.h"
+GLOBALS(
+ char * sep;
+ char * fmt;
+)
+
void seq_main(void)
{
double first, increment, last, dd;
-
+ char * sep_str = "\n";
+ char * fmt_str = "%g";
+ int output = 0;
// Parse command line arguments, with appropriate defaults.
// Note that any non-numeric arguments are treated as zero.
first = increment = 1;
@@ -33,11 +43,18 @@ void seq_main(void)
default: last = atof(toys.optargs[toys.optc-1]);
}
+ if (toys.optflags & FLAG_f) fmt_str = TT.fmt;
+ if (toys.optflags & FLAG_s) sep_str = TT.sep;
+
// Yes, we're looping on a double. Yes rounding errors can accumulate if
// you use a non-integer increment. Deal with it.
for (dd=first; (increment>0 && dd<=last) || (increment<0 && dd>=last);
dd+=increment)
{
- printf("%g\n", dd);
+ if (dd != first) printf("%s", sep_str);
+ printf(fmt_str, dd);
+ output = 1;
}
+
+ if (output) printf("\n");
}