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Support commands with right parenthesis. From nicm and me.

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This commit is contained in:
Tiago Cunha 2009-02-01 18:14:49 +00:00
parent 051dcdcba8
commit 804beb9266
3 changed files with 50 additions and 10 deletions
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6
CHANGES
View File

@ -1,3 +1,7 @@
01 February 2009
* The character pair #(command) may now contain (escaped) right parenthesis.
30 January 2009
* . now bound to "command-prompt 'move-window %%'" by default, from joshe.
@ -1070,7 +1074,7 @@
(including mutt, emacs). No status bar yet and no key remapping or other
customisation.
$Id: CHANGES,v 1.245 2009-01-30 21:10:10 nicm Exp $
$Id: CHANGES,v 1.246 2009-02-01 18:14:49 tcunha Exp $
LocalWords: showw utf UTF fulvio ciriaco joshe OSC APC gettime abc DEF OA clr
LocalWords: rivo nurges lscm Erdely eol smysession mysession ek dstname RB ms

15
FAQ
View File

@ -164,3 +164,18 @@ exit (elinks, for some strange reason, sets it to the value of TERM):
STY= `which elinks` $*
echo -ne \\033]0\;\\007;
}
* What's the proper way to escape characters with #(command)?
When using the character pair #(command), the command will be parsed twice.
First when it's read by the configuration file, or the command-prompt parser,
and another right before the command is passed to the shell by popen(3). As an
example, to echo the string (test) to the status line, one could use single,
or double-quotes (the meaning is the same as if in the shell):
set -g status-right "#(echo \\\\(test\\\\))"
set -g status-right '#(echo \\\(test\\\))'
With the double-quotes, the string when is first parsed will be set to
#(echo \\(test\\)), and then again parsed as echo \(test\) before passing the
command to sh -c.

39
status.c
View File

@ -1,4 +1,4 @@
/* $Id: status.c,v 1.70 2009-01-30 00:24:49 nicm Exp $ */
/* $Id: status.c,v 1.71 2009-02-01 18:14:49 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -376,16 +376,37 @@ char *
status_replace_popen(char **iptr)
{
FILE *f;
char *buf = NULL;
char cmd[BUFSIZ];
char *ptr = NULL;
char *buf, *cmd, *ptr;
int lastesc;
size_t len;
if (**iptr == '\0' || strchr(*iptr, ')') == NULL)
if (**iptr == '\0')
return (NULL);
if (**iptr == ')') { /* no command given */
(*iptr)++;
return (NULL);
}
strlcpy(cmd, *iptr, sizeof cmd);
cmd[strcspn(cmd, ")")] = '\0';
buf = NULL;
cmd = xmalloc(strlen(*iptr) + 1);
len = 0;
lastesc = 0;
for (; **iptr != '\0'; (*iptr)++) {
if (!lastesc && **iptr == ')')
break; /* unescaped ) is the end */
if (!lastesc && **iptr == '\\') {
lastesc = 1;
continue; /* skip \ if not escaped */
}
lastesc = 0;
cmd[len++] = **iptr;
}
if (**iptr == '\0') /* no terminating ) */
goto out;
(*iptr)++; /* skip final ) */
cmd[len] = '\0';
if ((f = popen(cmd, "r")) == NULL)
goto out;
@ -398,7 +419,7 @@ status_replace_popen(char **iptr)
buf[len - 1] = '\0';
buf = xstrdup(buf);
} else {
ptr = xrealloc(ptr, 1, len + 1);
ptr = xmalloc(len + 1);
memcpy(ptr, buf, len);
ptr[len] = '\0';
buf = ptr;
@ -406,7 +427,7 @@ status_replace_popen(char **iptr)
pclose(f);
out:
*iptr = (strchr(*iptr, ')') + 1);
xfree(cmd);
return (buf);
}