diff options
Diffstat (limited to 'expr.c')
| -rw-r--r-- | expr.c | 35 |
1 files changed, 23 insertions, 12 deletions
@@ -1,6 +1,6 @@ /* * HardInfo - Displays System Information - * Copyright (C) 2003-2007 Leandro A. F. Pereira <leandro@linuxmag.com.br> + * Copyright (C) 2003-2007 Leandro A. F. Pereira <leandro@hardinfo.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -25,7 +25,9 @@ #include <stdio.h> #include <ctype.h> #include <math.h> -#include <expr.h> + +#include "expr.h" +#include "config.h" static MathToken *new_operator(gchar op) { @@ -90,8 +92,9 @@ GSList *math_infix_to_postfix(GSList * infix) stack[++t_sp] = t; } else if (t->type == TOKEN_OPERATOR && t->val.op == ')') { for (top = stack[t_sp]; t_sp != 0 && top->val.op != '('; - top = stack[t_sp]) - postfix = g_slist_append(postfix, stack[t_sp--]); + top = stack[t_sp]) { + postfix = g_slist_append(postfix, stack[t_sp--]); + } t_sp--; } else if (t->type != TOKEN_OPERATOR) { postfix = g_slist_append(postfix, t); @@ -107,7 +110,7 @@ GSList *math_infix_to_postfix(GSList * infix) while (t_sp) postfix = g_slist_append(postfix, stack[t_sp--]); - + return postfix; } @@ -149,11 +152,11 @@ gfloat math_postfix_eval(GSList * postfix, gfloat at_value) op2 = stack[sp--]; op1 = stack[sp]; - + stack[sp] = __result(op1, op2, t->val.op); } } - + return stack[sp]; } @@ -161,17 +164,25 @@ GSList *math_string_to_infix(gchar * string) { GSList *infix = NULL; gchar *expr = string; - + for (; *expr; expr++) { if (strchr("+-/*^()", *expr)) { infix = g_slist_append(infix, new_operator(*expr)); } else if (strchr("@", *expr)) { infix = g_slist_append(infix, new_variable(*expr)); } else if (strchr("-.1234567890", *expr)) { - gfloat value; - - expr += sscanf(expr, "%f", &value); - infix = g_slist_append(infix, new_value(value)); + gchar value[32], *v = value; + gfloat floatval; + + do { + *v++ = *expr++; + } while (*expr && strchr("-.1234567890", *expr)); + expr--; + *v = '\0'; + + sscanf(value, "%f", &floatval); + + infix = g_slist_append(infix, new_value(floatval)); } else if (!isspace(*expr)) { g_print("Invalid token: [%c][%d]\n", *expr, *expr); math_infix_free(infix, TRUE); |