diff options
Diffstat (limited to 'shell')
| -rw-r--r-- | shell/ash.c | 76 |
1 files changed, 28 insertions, 48 deletions
diff --git a/shell/ash.c b/shell/ash.c index 9a5435e..15e1adb 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -1593,9 +1593,6 @@ __lookupalias(const char *name) { #define ARITH_BNOT 281 static void expari (int); -/* From arith.y */ -static long ash_arith(const char *p); -static int expcmd (int , char **); #endif static char *trap[NSIG]; /* trap handler commands */ @@ -1647,7 +1644,7 @@ static int waitcmd (int, char **); static int ulimitcmd (int, char **); static int timescmd (int, char **); #ifdef ASH_MATH_SUPPORT -static int expcmd (int, char **); +static int letcmd (int, char **); #endif static int typecmd (int, char **); #ifdef ASH_GETOPTS @@ -1706,9 +1703,6 @@ static const struct builtincmd builtincmds[] = { { BUILTIN_SPECIAL "eval", evalcmd }, { BUILTIN_SPECIAL "exec", execcmd }, { BUILTIN_SPECIAL "exit", exitcmd }, -#ifdef ASH_MATH_SUPPORT - { BUILTIN_NOSPEC "exp", expcmd }, -#endif { BUILTIN_SPEC_ASSG "export", exportcmd }, { BUILTIN_REGULAR "false", false_main }, { BUILTIN_REGULAR "fc", histcmd }, @@ -1725,7 +1719,7 @@ static const struct builtincmd builtincmds[] = { { BUILTIN_REGULAR "kill", killcmd }, #endif #ifdef ASH_MATH_SUPPORT - { BUILTIN_NOSPEC "let", expcmd }, + { BUILTIN_REGULAR "let", letcmd }, #endif { BUILTIN_ASSIGN "local", localcmd }, #ifndef BB_PWD @@ -4883,7 +4877,9 @@ expari(int flag) removerecordregions(begoff); if (quotes) rmescapes(p+2); - result = ash_arith(p+2); + result = arith(p+2); + if (result < 0) + error("arith: syntax error: \"%s\"\n", p+2); snprintf(p, 12, "%d", result); while (*p++) @@ -12878,7 +12874,7 @@ findvar(struct var **vpp, const char *name) /* * Copyright (c) 1999 Herbert Xu <herbert@debian.org> * This file contains code for the times builtin. - * $Id: ash.c,v 1.14 2001/07/30 21:41:37 andersen Exp $ + * $Id: ash.c,v 1.15 2001/07/31 21:38:23 andersen Exp $ */ static int timescmd (int argc, char **argv) { @@ -12900,45 +12896,29 @@ static int timescmd (int argc, char **argv) #ifdef ASH_MATH_SUPPORT -/* The exp(1) builtin. */ -int expcmd(int argc, char **argv) -{ - const char *p; - char *concat; - char **ap; - long i; - - if (argc > 1) { - p = argv[1]; - if (argc > 2) { - /* concatenate arguments */ - STARTSTACKSTR(concat); - ap = argv + 2; - for (;;) { - while (*p) - STPUTC(*p++, concat); - if ((p = *ap++) == NULL) - break; - STPUTC(' ', concat); - } - STPUTC('\0', concat); - p = grabstackstr(concat); +/* The let builtin. */ +int letcmd(int argc, char **argv) +{ + long result=0; + if (argc == 2) { + char *tmp, *expression, p[13]; + expression = strchr(argv[1], '='); + if (!expression) { + out2fmt("sh: let: syntax error: \"%s\"\n", argv[1]); + return 0; } - } else - p = ""; - - i = ash_arith(p); - - printf("%ld\n", i); - return (! i); -} - -static long ash_arith(const char *p) -{ - long i = arith(p); - if (i <0) - error("arith: syntax error: \"%s\"\n", p); - return i; + *expression = '\0'; + tmp = ++expression; + result = arith(tmp); + if (result < 0) { + out2fmt("sh: let: syntax error: \"%s=%s\"\n", argv[1], expression); + return 0; + } + snprintf(p, 12, "%ld", result); + setvar(argv[1], savestr(p), 0); + } else if (argc >= 3) + synerror("invalid operand"); + return !result; } #endif |