From: Peter Stephenson <pws@csr.com>
To: zsh-workers@sunsite.auc.dk (Zsh hackers list)
Subject: PATCH: C_BASES option for outputting hex and octal
Date: Thu, 10 Aug 2000 17:11:24 +0100 [thread overview]
Message-ID: <0FZ300DOM3N03H@la-la.cambridgesiliconradio.com> (raw)
Does anyone object to my adding options for trivial things like this?
Because if so they ought to have got the point and given up objecting years
ago :-/. (I finally got fed up with 0x${$(([#16]$num))##*\#}.)
If it weren't for backward compatibility, I'd set C_BASES by default and
just unset it for ksh compatibility. But the current format could have
worked its way into a lot of scripts.
% print $(( [#16] 0xff ))
16#FF
% setopt cbases
% print $(( [#16] 0xff ))
0xFF
% print $(( [#8] 8#77 ))
8#77
% setopt octalzeroes
% print $(( [#8] 077 ))
077
Index: Doc/Zsh/options.yo
===================================================================
RCS file: /cvsroot/zsh/zsh/Doc/Zsh/options.yo,v
retrieving revision 1.11
diff -u -r1.11 options.yo
--- Doc/Zsh/options.yo 2000/08/03 07:51:53 1.11
+++ Doc/Zsh/options.yo 2000/08/10 16:05:06
@@ -206,6 +206,19 @@
This disables backslashed escape sequences in echo strings unless the
tt(-e) option is specified.
)
+pindex(C_BASES)
+cindex(bases, output in C format)
+cindex(hexadecimal, output in C format)
+cindex(octal, output in C format)
+item(tt(C_BASES))(
+Output hexadecimal numbers in the standard C format, for example `tt(0xFF)'
+instead of the usual `tt(16#FF)'. If the option tt(OCTAL_ZEROES) is also
+set (it is not by default), octal numbers will be treated similarly and
+hence appear as `tt(077)' instead of `tt(8#77)'. This option has no effect
+on the choice of the output base, nor on the output of bases other than
+hexadecimal and octal. Note that these formats will be understood on input
+irrespective of the setting of tt(C_BASES).
+)
pindex(CDABLE_VARS)
cindex(cd, to parameter)
item(tt(CDABLE_VARS) (tt(-T)))(
Index: Src/options.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/options.c,v
retrieving revision 1.5
diff -u -r1.5 options.c
--- Src/options.c 2000/07/30 17:03:53 1.5
+++ Src/options.c 2000/08/10 16:05:07
@@ -90,6 +90,7 @@
{NULL, "bgnice", OPT_EMULATE|OPT_NONBOURNE, BGNICE},
{NULL, "braceccl", OPT_EMULATE, BRACECCL},
{NULL, "bsdecho", OPT_EMULATE|OPT_SH, BSDECHO},
+{NULL, "cbases", 0, CBASES},
{NULL, "cdablevars", OPT_EMULATE, CDABLEVARS},
{NULL, "chasedots", OPT_EMULATE, CHASEDOTS},
{NULL, "chaselinks", OPT_EMULATE, CHASELINKS},
Index: Src/params.c
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/params.c,v
retrieving revision 1.25
diff -u -r1.25 params.c
--- Src/params.c 2000/08/03 13:10:13 1.25
+++ Src/params.c 2000/08/10 16:05:07
@@ -3045,7 +3045,12 @@
base = 10;
if (base != 10) {
- sprintf(s, "%d#", base);
+ if (isset(CBASES) && base == 16)
+ sprintf(s, "0x");
+ else if (isset(CBASES) && base == 8 && isset(OCTALZEROES))
+ sprintf(s, "0");
+ else
+ sprintf(s, "%d#", base);
s += strlen(s);
}
for (x = v; x; digs++)
Index: Src/zsh.h
===================================================================
RCS file: /cvsroot/zsh/zsh/Src/zsh.h,v
retrieving revision 1.20
diff -u -r1.20 zsh.h
--- Src/zsh.h 2000/08/08 09:13:37 1.20
+++ Src/zsh.h 2000/08/10 16:05:07
@@ -1326,6 +1326,7 @@
BGNICE,
BRACECCL,
BSDECHO,
+ CBASES,
CDABLEVARS,
CHASEDOTS,
CHASELINKS,
--
Peter Stephenson <pws@csr.com>
Cambridge Silicon Radio, Unit 300, Science Park, Milton Road,
Cambridge, CB4 0XL, UK Tel: +44 (0)1223 392070
next reply other threads:[~2000-08-10 16:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-08-10 16:11 Peter Stephenson [this message]
2000-08-11 20:16 ` Zefram
2000-08-12 15:46 ` Peter Stephenson
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