svn commit: [25930] trunk/busybox/shell
vda at busybox.net
vda at busybox.net
Thu Apr 2 13:46:28 UTC 2009
Author: vda
Date: 2009-04-02 13:46:27 +0000 (Thu, 02 Apr 2009)
New Revision: 25930
Log:
shells: do not need to have math state global
function old new delta
ash_arith - 143 +143
expand_variables 2102 2124 +22
popstring 134 140 +6
parse_command 1460 1463 +3
trapcmd 236 238 +2
changepath 197 196 -1
raise_interrupt 86 83 -3
hush_main 1012 991 -21
ash_main 1388 1364 -24
arith_set_local_var 73 34 -39
dash_arith 117 - -117
------------------------------------------------------------------------------
(add/remove: 1/1 grow/shrink: 4/5 up/down: 176/-205) Total: -29 bytes
Modified:
trunk/busybox/shell/ash.c
trunk/busybox/shell/hush.c
Changeset:
Modified: trunk/busybox/shell/ash.c
===================================================================
--- trunk/busybox/shell/ash.c 2009-04-02 12:57:38 UTC (rev 25929)
+++ trunk/busybox/shell/ash.c 2009-04-02 13:46:27 UTC (rev 25930)
@@ -185,10 +185,6 @@
#define debug optlist[15]
#endif
-#if ENABLE_SH_MATH_SUPPORT
- arith_eval_hooks_t math_hooks;
-#endif
-
/* trap handler commands */
/*
* Sigmode records the current value of the signal handlers for the various
@@ -238,7 +234,6 @@
#define random_LCG (G_misc.random_LCG )
#define backgndpid (G_misc.backgndpid )
#define job_warning (G_misc.job_warning)
-#define math_hooks (G_misc.math_hooks )
#define INIT_G_misc() do { \
(*(struct globals_misc**)&ash_ptr_to_globals_misc) = xzalloc(sizeof(G_misc)); \
barrier(); \
@@ -1103,6 +1098,14 @@
va_end(ap);
}
+static void raise_error_syntax(const char *) NORETURN;
+static void
+raise_error_syntax(const char *msg)
+{
+ ash_msg_and_raise_error("syntax error: %s", msg);
+ /* NOTREACHED */
+}
+
static void ash_msg_and_raise(int, const char *, ...) NORETURN;
static void
ash_msg_and_raise(int cond, const char *msg, ...)
@@ -5241,7 +5244,32 @@
*/
#if ENABLE_SH_MATH_SUPPORT
-static arith_t dash_arith(const char *);
+static arith_t
+ash_arith(const char *s)
+{
+ arith_eval_hooks_t math_hooks;
+ arith_t result;
+ int errcode = 0;
+
+ math_hooks.lookupvar = lookupvar;
+ math_hooks.setvar = setvar;
+ math_hooks.endofname = endofname;
+
+ INT_OFF;
+ result = arith(s, &errcode, &math_hooks);
+ if (errcode < 0) {
+ if (errcode == -3)
+ ash_msg_and_raise_error("exponent less than 0");
+ if (errcode == -2)
+ ash_msg_and_raise_error("divide by zero");
+ if (errcode == -5)
+ ash_msg_and_raise_error("expression recursion loop detected");
+ raise_error_syntax(s);
+ }
+ INT_ON;
+
+ return result;
+}
#endif
/*
@@ -5720,7 +5748,7 @@
if (quotes)
rmescapes(p + 2);
- len = cvtnum(dash_arith(p + 2));
+ len = cvtnum(ash_arith(p + 2));
if (flag != '"')
recordregion(begoff, begoff + len, 0);
@@ -10127,14 +10155,6 @@
*/
#define NEOF ((union node *)&tokpushback)
-static void raise_error_syntax(const char *) NORETURN;
-static void
-raise_error_syntax(const char *msg)
-{
- ash_msg_and_raise_error("syntax error: %s", msg);
- /* NOTREACHED */
-}
-
/*
* Called when an unexpected token is read during the parse. The argument
* is the token that is expected, or -1 if more than one type of token can
@@ -12353,33 +12373,11 @@
}
#if ENABLE_SH_MATH_SUPPORT
-static arith_t
-dash_arith(const char *s)
-{
- arith_t result;
- int errcode = 0;
-
- INT_OFF;
- result = arith(s, &errcode, &math_hooks);
- if (errcode < 0) {
- if (errcode == -3)
- ash_msg_and_raise_error("exponent less than 0");
- if (errcode == -2)
- ash_msg_and_raise_error("divide by zero");
- if (errcode == -5)
- ash_msg_and_raise_error("expression recursion loop detected");
- raise_error_syntax(s);
- }
- INT_ON;
-
- return result;
-}
-
/*
- * The let builtin. partial stolen from GNU Bash, the Bourne Again SHell.
- * Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
+ * The let builtin. partial stolen from GNU Bash, the Bourne Again SHell.
+ * Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
*
- * Copyright (C) 2003 Vladimir Oleynik <dzo at simtreas.ru>
+ * Copyright (C) 2003 Vladimir Oleynik <dzo at simtreas.ru>
*/
static int
letcmd(int argc UNUSED_PARAM, char **argv)
@@ -12390,7 +12388,7 @@
if (!*argv)
ash_msg_and_raise_error("expression expected");
do {
- i = dash_arith(*argv);
+ i = ash_arith(*argv);
} while (*++argv);
return !i;
@@ -13119,11 +13117,6 @@
INIT_G_alias();
#endif
INIT_G_cmdtable();
-#if ENABLE_SH_MATH_SUPPORT
- math_hooks.lookupvar = lookupvar;
- math_hooks.setvar = setvar;
- math_hooks.endofname = endofname;
-#endif
#if PROFILE
monitor(4, etext, profile_buf, sizeof(profile_buf), 50);
Modified: trunk/busybox/shell/hush.c
===================================================================
--- trunk/busybox/shell/hush.c 2009-04-02 12:57:38 UTC (rev 25929)
+++ trunk/busybox/shell/hush.c 2009-04-02 13:46:27 UTC (rev 25930)
@@ -454,9 +454,6 @@
#if ENABLE_FEATURE_EDITING
line_input_t *line_input_state;
#endif
-#if ENABLE_SH_MATH_SUPPORT
- arith_eval_hooks_t hooks;
-#endif
pid_t root_pid;
pid_t last_bg_pid;
#if ENABLE_HUSH_JOB
@@ -1189,12 +1186,12 @@
static void arith_set_local_var(const char *name, const char *val, int flags)
{
/* arith code doesnt malloc space, so do it for it */
- char *var = xmalloc(strlen(name) + 1 + strlen(val) + 1);
- sprintf(var, "%s=%s", name, val);
+ char *var = xasprintf("%s=%s", name, val);
set_local_var(var, flags);
}
#endif
+
/*
* in_str support
*/
@@ -1807,20 +1804,26 @@
#endif
#if ENABLE_SH_MATH_SUPPORT
case '+': { /* <SPECIAL_VAR_SYMBOL>(cmd<SPECIAL_VAR_SYMBOL> */
+ arith_eval_hooks_t hooks;
arith_t res;
char buf[30];
int errcode;
+
*p = '\0';
++arg;
debug_printf_subst("ARITH '%s' first_ch %x\n", arg, first_ch);
- res = arith(arg, &errcode, &G.hooks);
- if (errcode < 0)
+ hooks.lookupvar = lookup_param;
+ hooks.setvar = arith_set_local_var;
+ hooks.endofname = endofname;
+ res = arith(arg, &errcode, &hooks);
+ if (errcode < 0) {
switch (errcode) {
case -3: maybe_die("arith", "exponent less than 0"); break;
case -2: maybe_die("arith", "divide by zero"); break;
case -5: maybe_die("arith", "expression recursion loop detected"); break;
- default: maybe_die("arith", "syntax error");
+ default: maybe_die("arith", "syntax error"); break;
}
+ }
sprintf(buf, arith_t_fmt, res);
o_addstrauto(output, buf);
debug_printf_subst("ARITH RES '"arith_t_fmt"'\n", res);
@@ -4601,11 +4604,6 @@
#if ENABLE_FEATURE_EDITING
G.line_input_state = new_line_input_t(FOR_SHELL);
#endif
-#if ENABLE_SH_MATH_SUPPORT
- G.hooks.lookupvar = lookup_param;
- G.hooks.setvar = arith_set_local_var;
- G.hooks.endofname = endofname;
-#endif
/* XXX what should these be while sourcing /etc/profile? */
G.global_argc = argc;
G.global_argv = argv;
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