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/*
* tclGet.c --
*
* This file contains functions 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 1.19 2007/11/12 22:05:59 hobbs 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 src. If src 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(
Tcl_Interp *interp, /* Interpreter to use for error reporting. */
CONST char *src, /* String containing a (possibly signed)
* integer in a form acceptable to strtoul. */
int *intPtr) /* Place to store converted result. */
{
Tcl_Obj obj;
int code;
obj.refCount = 1;
obj.bytes = (char *) src;
obj.length = strlen(src);
obj.typePtr = NULL;
code = Tcl_GetIntFromObj(interp, &obj, intPtr);
if (obj.refCount > 1) {
Tcl_Panic("invalid sharing of Tcl_Obj on C stack");
}
return code;
}
/*
*----------------------------------------------------------------------
*
* 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" (a difference that matters on 64-bit architectures).
*
* Results:
* The return value is normally TCL_OK; in this case *longPtr will be set
* to the long integer value equivalent to src. If src 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(
Tcl_Interp *interp, /* Interpreter used for error reporting if not
* NULL. */
CONST char *src, /* String containing a (possibly signed) long
* integer in a form acceptable to strtoul. */
long *longPtr) /* Place to store converted long result. */
{
Tcl_Obj obj;
int code;
obj.refCount = 1;
obj.bytes = (char *) src;
obj.length = strlen(src);
obj.typePtr = NULL;
code = Tcl_GetLongFromObj(interp, &obj, longPtr);
if (obj.refCount > 1) {
Tcl_Panic("invalid sharing of Tcl_Obj on C stack");
}
return code;
}
/*
*----------------------------------------------------------------------
*
* 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 src. If src 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(
Tcl_Interp *interp, /* Interpreter used for error reporting. */
CONST char *src, /* String containing a floating-point number
* in a form acceptable to strtod. */
double *doublePtr) /* Place to store converted result. */
{
Tcl_Obj obj;
int code;
obj.refCount = 1;
obj.bytes = (char *) src;
obj.length = strlen(src);
obj.typePtr = NULL;
code = Tcl_GetDoubleFromObj(interp, &obj, doublePtr);
if (obj.refCount > 1) {
Tcl_Panic("invalid sharing of Tcl_Obj on C stack");
}
return code;
}
/*
*----------------------------------------------------------------------
*
* 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 src. If src 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(
Tcl_Interp *interp, /* Interpreter used for error reporting. */
CONST char *src, /* 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. */
{
Tcl_Obj obj;
int code;
obj.refCount = 1;
obj.bytes = (char *) src;
obj.length = strlen(src);
obj.typePtr = NULL;
code = Tcl_ConvertToType(interp, &obj, &tclBooleanType);
if (obj.refCount > 1) {
Tcl_Panic("invalid sharing of Tcl_Obj on C stack");
}
if (code == TCL_OK) {
*boolPtr = obj.internalRep.longValue;
}
return code;
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 4
* fill-column: 78
* End:
*/
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