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/*
* tclGet.c --
*
* This file contains procedures to convert strings into
* other forms, like integers or floating-point numbers or
* booleans, doing syntax checking along the way.
*
* Copyright (c) 1990-1993 The Regents of the University of California.
* Copyright (c) 1994-1997 Sun Microsystems, Inc.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
* RCS: @(#) $Id: tclGet.c,v 1.11 2005/04/21 14:23:48 dgp Exp $
*/
#include "tclInt.h"
/*
*----------------------------------------------------------------------
*
* Tcl_GetInt --
*
* Given a string, produce the corresponding integer value.
*
* Results:
* The return value is normally TCL_OK; in this case *intPtr
* will be set to the integer value equivalent to string. If
* string is improperly formed then TCL_ERROR is returned and
* an error message will be left in the interp's result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
Tcl_GetInt(interp, str, intPtr)
Tcl_Interp *interp; /* Interpreter to use for error reporting. */
CONST char *str; /* String containing a (possibly signed)
* integer in a form acceptable to strtoul. */
int *intPtr; /* Place to store converted result. */
{
Tcl_Obj obj;
obj.refCount = 1;
obj.bytes = (char *) str;
obj.length = strlen(str);
obj.typePtr = NULL;
return Tcl_GetIntFromObj(interp, &obj, intPtr);
}
/*
*----------------------------------------------------------------------
*
* TclGetLong --
*
* Given a string, produce the corresponding long integer value.
* This routine is a version of Tcl_GetInt but returns a "long"
* instead of an "int".
*
* Results:
* The return value is normally TCL_OK; in this case *longPtr
* will be set to the long integer value equivalent to string. If
* string is improperly formed then TCL_ERROR is returned and
* an error message will be left in the interp's result if interp
* is non-NULL.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
TclGetLong(interp, str, longPtr)
Tcl_Interp *interp; /* Interpreter used for error reporting
* if not NULL. */
CONST char *str; /* String containing a (possibly signed)
* long integer in a form acceptable to
* strtoul. */
long *longPtr; /* Place to store converted long result. */
{
Tcl_Obj obj;
obj.refCount = 1;
obj.bytes = (char *) str;
obj.length = strlen(str);
obj.typePtr = NULL;
return Tcl_GetLongFromObj(interp, &obj, longPtr);
}
/*
*----------------------------------------------------------------------
*
* Tcl_GetDouble --
*
* Given a string, produce the corresponding double-precision
* floating-point value.
*
* Results:
* The return value is normally TCL_OK; in this case *doublePtr
* will be set to the double-precision value equivalent to string.
* If string is improperly formed then TCL_ERROR is returned and
* an error message will be left in the interp's result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
Tcl_GetDouble(interp, str, doublePtr)
Tcl_Interp *interp; /* Interpreter used for error reporting. */
CONST char *str; /* String containing a floating-point number
* in a form acceptable to strtod. */
double *doublePtr; /* Place to store converted result. */
{
Tcl_Obj obj;
obj.refCount = 1;
obj.bytes = (char *) str;
obj.length = strlen(str);
obj.typePtr = NULL;
return Tcl_GetDoubleFromObj(interp, &obj, doublePtr);
}
/*
*----------------------------------------------------------------------
*
* Tcl_GetBoolean --
*
* Given a string, return a 0/1 boolean value corresponding
* to the string.
*
* Results:
* The return value is normally TCL_OK; in this case *boolPtr
* will be set to the 0/1 value equivalent to string. If
* string is improperly formed then TCL_ERROR is returned and
* an error message will be left in the interp's result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
int
Tcl_GetBoolean(interp, str, boolPtr)
Tcl_Interp *interp; /* Interpreter used for error reporting. */
CONST char *str; /* String containing a boolean number
* specified either as 1/0 or true/false or
* yes/no. */
int *boolPtr; /* Place to store converted result, which
* will be 0 or 1. */
{
/*
* Can't use this (yet) due to Bug 1187123.
*
Tcl_Obj obj;
obj.refCount = 1;
obj.bytes = (char *) str;
obj.length = strlen(str);
obj.typePtr = NULL;
return Tcl_GetBooleanFromObj(interp, &obj, boolPtr);
*/
int i;
char lowerCase[10], c;
size_t length;
/*
* Convert the input string to all lower-case.
* INTL: This code will work on UTF strings.
*/
for (i = 0; i < 9; i++) {
c = str[i];
if (c == 0) {
break;
}
if ((c >= 'A') && (c <= 'Z')) {
c += (char) ('a' - 'A');
}
lowerCase[i] = c;
}
lowerCase[i] = 0;
length = strlen(lowerCase);
c = lowerCase[0];
if ((c == '0') && (lowerCase[1] == '\0')) {
*boolPtr = 0;
} else if ((c == '1') && (lowerCase[1] == '\0')) {
*boolPtr = 1;
} else if ((c == 'y') && (strncmp(lowerCase, "yes", length) == 0)) {
*boolPtr = 1;
} else if ((c == 'n') && (strncmp(lowerCase, "no", length) == 0)) {
*boolPtr = 0;
} else if ((c == 't') && (strncmp(lowerCase, "true", length) == 0)) {
*boolPtr = 1;
} else if ((c == 'f') && (strncmp(lowerCase, "false", length) == 0)) {
*boolPtr = 0;
} else if ((c == 'o') && (length >= 2)) {
if (strncmp(lowerCase, "on", length) == 0) {
*boolPtr = 1;
} else if (strncmp(lowerCase, "off", length) == 0) {
*boolPtr = 0;
} else {
goto badBoolean;
}
} else {
badBoolean:
if (interp != (Tcl_Interp *) NULL) {
Tcl_Obj *msg =
Tcl_NewStringObj("expected boolean value but got \"", -1);
TclAppendLimitedToObj(msg, str, -1, 50, "");
Tcl_AppendToObj(msg, "\"", -1);
Tcl_SetObjResult(interp, msg);
}
return TCL_ERROR;
}
return TCL_OK;
}
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