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Fix the let builtin (so we can close bug #1196) and remove the
nonstandard exp builtin. -Erik
This commit is contained in:
Eric Andersen
parent
73f6a1b058
commit
fa1c5aac51
74
ash.c
74
ash.c
@ -1593,9 +1593,6 @@ __lookupalias(const char *name) {
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#define ARITH_BNOT 281
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static void expari (int);
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/* From arith.y */
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static long ash_arith(const char *p);
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static int expcmd (int , char **);
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#endif
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static char *trap[NSIG]; /* trap handler commands */
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@ -1647,7 +1644,7 @@ static int waitcmd (int, char **);
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static int ulimitcmd (int, char **);
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static int timescmd (int, char **);
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#ifdef ASH_MATH_SUPPORT
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static int expcmd (int, char **);
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static int letcmd (int, char **);
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#endif
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static int typecmd (int, char **);
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#ifdef ASH_GETOPTS
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@ -1706,9 +1703,6 @@ static const struct builtincmd builtincmds[] = {
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{ BUILTIN_SPECIAL "eval", evalcmd },
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{ BUILTIN_SPECIAL "exec", execcmd },
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{ BUILTIN_SPECIAL "exit", exitcmd },
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#ifdef ASH_MATH_SUPPORT
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{ BUILTIN_NOSPEC "exp", expcmd },
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#endif
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{ BUILTIN_SPEC_ASSG "export", exportcmd },
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{ BUILTIN_REGULAR "false", false_main },
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{ BUILTIN_REGULAR "fc", histcmd },
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@ -1725,7 +1719,7 @@ static const struct builtincmd builtincmds[] = {
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{ BUILTIN_REGULAR "kill", killcmd },
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#endif
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#ifdef ASH_MATH_SUPPORT
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{ BUILTIN_NOSPEC "let", expcmd },
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{ BUILTIN_REGULAR "let", letcmd },
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#endif
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{ BUILTIN_ASSIGN "local", localcmd },
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#ifndef BB_PWD
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@ -4883,7 +4877,9 @@ expari(int flag)
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removerecordregions(begoff);
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if (quotes)
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rmescapes(p+2);
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result = ash_arith(p+2);
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result = arith(p+2);
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if (result < 0)
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error("arith: syntax error: \"%s\"\n", p+2);
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snprintf(p, 12, "%d", result);
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while (*p++)
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@ -12878,7 +12874,7 @@ findvar(struct var **vpp, const char *name)
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/*
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* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
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* This file contains code for the times builtin.
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* $Id: ash.c,v 1.14 2001/07/30 21:41:37 andersen Exp $
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* $Id: ash.c,v 1.15 2001/07/31 21:38:23 andersen Exp $
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*/
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static int timescmd (int argc, char **argv)
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{
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@ -12900,45 +12896,29 @@ static int timescmd (int argc, char **argv)
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#ifdef ASH_MATH_SUPPORT
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/* The exp(1) builtin. */
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int expcmd(int argc, char **argv)
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/* The let builtin. */
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int letcmd(int argc, char **argv)
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{
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const char *p;
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char *concat;
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char **ap;
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long i;
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if (argc > 1) {
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p = argv[1];
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if (argc > 2) {
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/* concatenate arguments */
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STARTSTACKSTR(concat);
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ap = argv + 2;
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for (;;) {
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while (*p)
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STPUTC(*p++, concat);
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if ((p = *ap++) == NULL)
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break;
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STPUTC(' ', concat);
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}
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STPUTC('\0', concat);
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p = grabstackstr(concat);
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long result=0;
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if (argc == 2) {
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char *tmp, *expression, p[13];
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expression = strchr(argv[1], '=');
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if (!expression) {
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out2fmt("sh: let: syntax error: \"%s\"\n", argv[1]);
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return 0;
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}
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} else
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p = "";
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i = ash_arith(p);
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printf("%ld\n", i);
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return (! i);
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}
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static long ash_arith(const char *p)
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{
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long i = arith(p);
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if (i <0)
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error("arith: syntax error: \"%s\"\n", p);
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return i;
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*expression = '\0';
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tmp = ++expression;
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result = arith(tmp);
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if (result < 0) {
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out2fmt("sh: let: syntax error: \"%s=%s\"\n", argv[1], expression);
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return 0;
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}
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snprintf(p, 12, "%ld", result);
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setvar(argv[1], savestr(p), 0);
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} else if (argc >= 3)
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synerror("invalid operand");
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return !result;
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}
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#endif
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74
shell/ash.c
74
shell/ash.c
@ -1593,9 +1593,6 @@ __lookupalias(const char *name) {
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#define ARITH_BNOT 281
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static void expari (int);
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/* From arith.y */
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static long ash_arith(const char *p);
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static int expcmd (int , char **);
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#endif
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static char *trap[NSIG]; /* trap handler commands */
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@ -1647,7 +1644,7 @@ static int waitcmd (int, char **);
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static int ulimitcmd (int, char **);
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static int timescmd (int, char **);
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#ifdef ASH_MATH_SUPPORT
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static int expcmd (int, char **);
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static int letcmd (int, char **);
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#endif
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static int typecmd (int, char **);
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#ifdef ASH_GETOPTS
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@ -1706,9 +1703,6 @@ static const struct builtincmd builtincmds[] = {
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{ BUILTIN_SPECIAL "eval", evalcmd },
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{ BUILTIN_SPECIAL "exec", execcmd },
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{ BUILTIN_SPECIAL "exit", exitcmd },
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#ifdef ASH_MATH_SUPPORT
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{ BUILTIN_NOSPEC "exp", expcmd },
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#endif
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{ BUILTIN_SPEC_ASSG "export", exportcmd },
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{ BUILTIN_REGULAR "false", false_main },
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{ BUILTIN_REGULAR "fc", histcmd },
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@ -1725,7 +1719,7 @@ static const struct builtincmd builtincmds[] = {
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{ BUILTIN_REGULAR "kill", killcmd },
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#endif
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#ifdef ASH_MATH_SUPPORT
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{ BUILTIN_NOSPEC "let", expcmd },
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{ BUILTIN_REGULAR "let", letcmd },
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#endif
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{ BUILTIN_ASSIGN "local", localcmd },
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#ifndef BB_PWD
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@ -4883,7 +4877,9 @@ expari(int flag)
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removerecordregions(begoff);
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if (quotes)
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rmescapes(p+2);
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result = ash_arith(p+2);
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result = arith(p+2);
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if (result < 0)
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error("arith: syntax error: \"%s\"\n", p+2);
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snprintf(p, 12, "%d", result);
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while (*p++)
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@ -12878,7 +12874,7 @@ findvar(struct var **vpp, const char *name)
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/*
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* Copyright (c) 1999 Herbert Xu <herbert@debian.org>
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* This file contains code for the times builtin.
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* $Id: ash.c,v 1.14 2001/07/30 21:41:37 andersen Exp $
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* $Id: ash.c,v 1.15 2001/07/31 21:38:23 andersen Exp $
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*/
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static int timescmd (int argc, char **argv)
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{
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@ -12900,45 +12896,29 @@ static int timescmd (int argc, char **argv)
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#ifdef ASH_MATH_SUPPORT
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/* The exp(1) builtin. */
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int expcmd(int argc, char **argv)
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/* The let builtin. */
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int letcmd(int argc, char **argv)
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{
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const char *p;
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char *concat;
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char **ap;
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long i;
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if (argc > 1) {
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p = argv[1];
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if (argc > 2) {
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/* concatenate arguments */
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STARTSTACKSTR(concat);
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ap = argv + 2;
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for (;;) {
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while (*p)
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STPUTC(*p++, concat);
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if ((p = *ap++) == NULL)
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break;
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STPUTC(' ', concat);
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}
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STPUTC('\0', concat);
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p = grabstackstr(concat);
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long result=0;
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if (argc == 2) {
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char *tmp, *expression, p[13];
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expression = strchr(argv[1], '=');
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if (!expression) {
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out2fmt("sh: let: syntax error: \"%s\"\n", argv[1]);
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return 0;
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}
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} else
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p = "";
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i = ash_arith(p);
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printf("%ld\n", i);
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return (! i);
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}
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static long ash_arith(const char *p)
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{
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long i = arith(p);
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if (i <0)
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error("arith: syntax error: \"%s\"\n", p);
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return i;
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*expression = '\0';
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tmp = ++expression;
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result = arith(tmp);
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if (result < 0) {
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out2fmt("sh: let: syntax error: \"%s=%s\"\n", argv[1], expression);
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return 0;
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}
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snprintf(p, 12, "%ld", result);
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setvar(argv[1], savestr(p), 0);
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} else if (argc >= 3)
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synerror("invalid operand");
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return !result;
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}
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#endif
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