shared_source/tcl_base/tclget.c

/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclget.c,v 1.1.1.1 2001/06/13 04:39:21 dtashley Exp $ */

/* 
 * 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 1.1.1.1 2001/06/13 04:39:21 dtashley Exp $
 */

#include "tclInt.h"
#include "tclPort.h"
#include "tclMath.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, string, intPtr)
    Tcl_Interp *interp;         /* Interpreter to use for error reporting. */
    char *string;               /* String containing a (possibly signed)
                                 * integer in a form acceptable to strtol. */
    int *intPtr;                /* Place to store converted result. */
{
    char *end, *p;
    long i;

    /*
     * Note: use strtoul instead of strtol for integer conversions
     * to allow full-size unsigned numbers, but don't depend on strtoul
     * to handle sign characters;  it won't in some implementations.
     */

    errno = 0;
    for (p = string; isspace(UCHAR(*p)); p++) { /* INTL: ISO space. */
        /* Empty loop body. */
    }
    if (*p == '-') {
        p++;
        i = -((long)strtoul(p, &end, 0)); /* INTL: Tcl source. */
    } else if (*p == '+') {
        p++;
        i = strtoul(p, &end, 0); /* INTL: Tcl source. */
    } else {
        i = strtoul(p, &end, 0); /* INTL: Tcl source. */
    }
    if (end == p) {
        badInteger:
        if (interp != (Tcl_Interp *) NULL) {
            Tcl_AppendResult(interp, "expected integer but got \"", string,
                    "\"", (char *) NULL);
            TclCheckBadOctal(interp, string);
        }
        return TCL_ERROR;
    }

    /*
     * The second test below is needed on platforms where "long" is
     * larger than "int" to detect values that fit in a long but not in
     * an int.
     */

    if ((errno == ERANGE) || (((long)(int) i) != i)) {
        if (interp != (Tcl_Interp *) NULL) {
            Tcl_SetResult(interp, "integer value too large to represent",
                    TCL_STATIC);
            Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
                    Tcl_GetStringResult(interp), (char *) NULL);
        }
        return TCL_ERROR;
    }
    while ((*end != '\0') && isspace(UCHAR(*end))) { /* INTL: ISO space. */
        end++;
    }
    if (*end != 0) {
        goto badInteger;
    }
    *intPtr = (int) i;
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * 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, string, longPtr)
    Tcl_Interp *interp;         /* Interpreter used for error reporting
                                 * if not NULL. */
    char *string;               /* String containing a (possibly signed)
                                 * long integer in a form acceptable to
                                 * strtoul. */
    long *longPtr;              /* Place to store converted long result. */
{
    char *end, *p;
    long i;

    /*
     * Note: don't depend on strtoul to handle sign characters; it won't
     * in some implementations.
     */

    errno = 0;
    for (p = string; isspace(UCHAR(*p)); p++) { /* INTL: ISO space. */
        /* Empty loop body. */
    }
    if (*p == '-') {
        p++;
        i = -(int)strtoul(p, &end, 0); /* INTL: Tcl source. */
    } else if (*p == '+') {
        p++;
        i = strtoul(p, &end, 0); /* INTL: Tcl source. */
    } else {
        i = strtoul(p, &end, 0); /* INTL: Tcl source. */
    }
    if (end == p) {
        badInteger:
        if (interp != (Tcl_Interp *) NULL) {
            Tcl_AppendResult(interp, "expected integer but got \"", string,
                    "\"", (char *) NULL);
            TclCheckBadOctal(interp, string);
        }
        return TCL_ERROR;
    }
    if (errno == ERANGE) {
        if (interp != (Tcl_Interp *) NULL) {
            Tcl_SetResult(interp, "integer value too large to represent",
                    TCL_STATIC);
            Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
                    Tcl_GetStringResult(interp), (char *) NULL);
        }
        return TCL_ERROR;
    }
    while ((*end != '\0') && isspace(UCHAR(*end))) { /* INTL: ISO space. */
        end++;
    }
    if (*end != 0) {
        goto badInteger;
    }
    *longPtr = i;
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * 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, string, doublePtr)
    Tcl_Interp *interp;         /* Interpreter used for error reporting. */
    char *string;               /* String containing a floating-point number
                                 * in a form acceptable to strtod. */
    double *doublePtr;          /* Place to store converted result. */
{
    char *end;
    double d;

    errno = 0;
    d = strtod(string, &end); /* INTL: Tcl source. */
    if (end == string) {
        badDouble:
        if (interp != (Tcl_Interp *) NULL) {
            Tcl_AppendResult(interp,
                    "expected floating-point number but got \"",
                    string, "\"", (char *) NULL);
        }
        return TCL_ERROR;
    }
    if (errno != 0 && (d == HUGE_VAL || d == -HUGE_VAL || d == 0)) {
        if (interp != (Tcl_Interp *) NULL) {
            TclExprFloatError(interp, d); 
        }
        return TCL_ERROR;
    }
    while ((*end != 0) && isspace(UCHAR(*end))) { /* INTL: ISO space. */
        end++;
    }
    if (*end != 0) {
        goto badDouble;
    }
    *doublePtr = d;
    return TCL_OK;
}

/*
 *----------------------------------------------------------------------
 *
 * 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, string, boolPtr)
    Tcl_Interp *interp;         /* Interpreter used for error reporting. */
    char *string;               /* 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. */
{
    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 = string[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_AppendResult(interp, "expected boolean value but got \"",
                    string, "\"", (char *) NULL);
        }
        return TCL_ERROR;
    }
    return TCL_OK;
}


/* $History: tclget.c $
 * 
 * *****************  Version 1  *****************
 * User: Dtashley     Date: 1/02/01    Time: 1:30a
 * Created in $/IjuScripter, IjuConsole/Source/Tcl Base
 * Initial check-in.
 */ 

/* End of TCLGET.C */
1	dashley	25	/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclget.c,v 1.1.1.1 2001/06/13 04:39:21 dtashley Exp $ */
2
3			/*
4			* tclGet.c --
5			*
6			* This file contains procedures to convert strings into
7			* other forms, like integers or floating-point numbers or
8			* booleans, doing syntax checking along the way.
9			*
10			* Copyright (c) 1990-1993 The Regents of the University of California.
11			* Copyright (c) 1994-1997 Sun Microsystems, Inc.
12			*
13			* See the file "license.terms" for information on usage and redistribution
14			* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
15			*
16			* RCS: @(#) $Id: tclget.c,v 1.1.1.1 2001/06/13 04:39:21 dtashley Exp $
17			*/
18
19			#include "tclInt.h"
20			#include "tclPort.h"
21			#include "tclMath.h"
22
23
24			/*
25			*----------------------------------------------------------------------
26			*
27			* Tcl_GetInt --
28			*
29			* Given a string, produce the corresponding integer value.
30			*
31			* Results:
32			* The return value is normally TCL_OK; in this case *intPtr
33			* will be set to the integer value equivalent to string. If
34			* string is improperly formed then TCL_ERROR is returned and
35			* an error message will be left in the interp's result.
36			*
37			* Side effects:
38			* None.
39			*
40			*----------------------------------------------------------------------
41			*/
42
43			int
44			Tcl_GetInt(interp, string, intPtr)
45			Tcl_Interp interp; / Interpreter to use for error reporting. */
46			char string; / String containing a (possibly signed)
47			* integer in a form acceptable to strtol. */
48			int intPtr; / Place to store converted result. */
49			{
50			char end, p;
51			long i;
52
53			/*
54			* Note: use strtoul instead of strtol for integer conversions
55			* to allow full-size unsigned numbers, but don't depend on strtoul
56			* to handle sign characters; it won't in some implementations.
57			*/
58
59			errno = 0;
60			for (p = string; isspace(UCHAR(p)); p++) { / INTL: ISO space. */
61			/* Empty loop body. */
62			}
63			if (*p == '-') {
64			p++;
65			i = -((long)strtoul(p, &end, 0)); /* INTL: Tcl source. */
66			} else if (*p == '+') {
67			p++;
68			i = strtoul(p, &end, 0); /* INTL: Tcl source. */
69			} else {
70			i = strtoul(p, &end, 0); /* INTL: Tcl source. */
71			}
72			if (end == p) {
73			badInteger:
74			if (interp != (Tcl_Interp *) NULL) {
75			Tcl_AppendResult(interp, "expected integer but got \"", string,
76			"\"", (char *) NULL);
77			TclCheckBadOctal(interp, string);
78			}
79			return TCL_ERROR;
80			}
81
82			/*
83			* The second test below is needed on platforms where "long" is
84			* larger than "int" to detect values that fit in a long but not in
85			* an int.
86			*/
87
88			if ((errno == ERANGE) \|\| (((long)(int) i) != i)) {
89			if (interp != (Tcl_Interp *) NULL) {
90			Tcl_SetResult(interp, "integer value too large to represent",
91			TCL_STATIC);
92			Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
93			Tcl_GetStringResult(interp), (char *) NULL);
94			}
95			return TCL_ERROR;
96			}
97			while ((end != '\0') && isspace(UCHAR(end))) { /* INTL: ISO space. */
98			end++;
99			}
100			if (*end != 0) {
101			goto badInteger;
102			}
103			*intPtr = (int) i;
104			return TCL_OK;
105			}
106
107			/*
108			*----------------------------------------------------------------------
109			*
110			* TclGetLong --
111			*
112			* Given a string, produce the corresponding long integer value.
113			* This routine is a version of Tcl_GetInt but returns a "long"
114			* instead of an "int".
115			*
116			* Results:
117			* The return value is normally TCL_OK; in this case *longPtr
118			* will be set to the long integer value equivalent to string. If
119			* string is improperly formed then TCL_ERROR is returned and
120			* an error message will be left in the interp's result if interp
121			* is non-NULL.
122			*
123			* Side effects:
124			* None.
125			*
126			*----------------------------------------------------------------------
127			*/
128
129			int
130			TclGetLong(interp, string, longPtr)
131			Tcl_Interp interp; / Interpreter used for error reporting
132			* if not NULL. */
133			char string; / String containing a (possibly signed)
134			* long integer in a form acceptable to
135			* strtoul. */
136			long longPtr; / Place to store converted long result. */
137			{
138			char end, p;
139			long i;
140
141			/*
142			* Note: don't depend on strtoul to handle sign characters; it won't
143			* in some implementations.
144			*/
145
146			errno = 0;
147			for (p = string; isspace(UCHAR(p)); p++) { / INTL: ISO space. */
148			/* Empty loop body. */
149			}
150			if (*p == '-') {
151			p++;
152			i = -(int)strtoul(p, &end, 0); /* INTL: Tcl source. */
153			} else if (*p == '+') {
154			p++;
155			i = strtoul(p, &end, 0); /* INTL: Tcl source. */
156			} else {
157			i = strtoul(p, &end, 0); /* INTL: Tcl source. */
158			}
159			if (end == p) {
160			badInteger:
161			if (interp != (Tcl_Interp *) NULL) {
162			Tcl_AppendResult(interp, "expected integer but got \"", string,
163			"\"", (char *) NULL);
164			TclCheckBadOctal(interp, string);
165			}
166			return TCL_ERROR;
167			}
168			if (errno == ERANGE) {
169			if (interp != (Tcl_Interp *) NULL) {
170			Tcl_SetResult(interp, "integer value too large to represent",
171			TCL_STATIC);
172			Tcl_SetErrorCode(interp, "ARITH", "IOVERFLOW",
173			Tcl_GetStringResult(interp), (char *) NULL);
174			}
175			return TCL_ERROR;
176			}
177			while ((end != '\0') && isspace(UCHAR(end))) { /* INTL: ISO space. */
178			end++;
179			}
180			if (*end != 0) {
181			goto badInteger;
182			}
183			*longPtr = i;
184			return TCL_OK;
185			}
186
187			/*
188			*----------------------------------------------------------------------
189			*
190			* Tcl_GetDouble --
191			*
192			* Given a string, produce the corresponding double-precision
193			* floating-point value.
194			*
195			* Results:
196			* The return value is normally TCL_OK; in this case *doublePtr
197			* will be set to the double-precision value equivalent to string.
198			* If string is improperly formed then TCL_ERROR is returned and
199			* an error message will be left in the interp's result.
200			*
201			* Side effects:
202			* None.
203			*
204			*----------------------------------------------------------------------
205			*/
206
207			int
208			Tcl_GetDouble(interp, string, doublePtr)
209			Tcl_Interp interp; / Interpreter used for error reporting. */
210			char string; / String containing a floating-point number
211			* in a form acceptable to strtod. */
212			double doublePtr; / Place to store converted result. */
213			{
214			char *end;
215			double d;
216
217			errno = 0;
218			d = strtod(string, &end); /* INTL: Tcl source. */
219			if (end == string) {
220			badDouble:
221			if (interp != (Tcl_Interp *) NULL) {
222			Tcl_AppendResult(interp,
223			"expected floating-point number but got \"",
224			string, "\"", (char *) NULL);
225			}
226			return TCL_ERROR;
227			}
228			if (errno != 0 && (d == HUGE_VAL \|\| d == -HUGE_VAL \|\| d == 0)) {
229			if (interp != (Tcl_Interp *) NULL) {
230			TclExprFloatError(interp, d);
231			}
232			return TCL_ERROR;
233			}
234			while ((end != 0) && isspace(UCHAR(end))) { /* INTL: ISO space. */
235			end++;
236			}
237			if (*end != 0) {
238			goto badDouble;
239			}
240			*doublePtr = d;
241			return TCL_OK;
242			}
243
244			/*
245			*----------------------------------------------------------------------
246			*
247			* Tcl_GetBoolean --
248			*
249			* Given a string, return a 0/1 boolean value corresponding
250			* to the string.
251			*
252			* Results:
253			* The return value is normally TCL_OK; in this case *boolPtr
254			* will be set to the 0/1 value equivalent to string. If
255			* string is improperly formed then TCL_ERROR is returned and
256			* an error message will be left in the interp's result.
257			*
258			* Side effects:
259			* None.
260			*
261			*----------------------------------------------------------------------
262			*/
263
264			int
265			Tcl_GetBoolean(interp, string, boolPtr)
266			Tcl_Interp interp; / Interpreter used for error reporting. */
267			char string; / String containing a boolean number
268			* specified either as 1/0 or true/false or
269			* yes/no. */
270			int boolPtr; / Place to store converted result, which
271			* will be 0 or 1. */
272			{
273			int i;
274			char lowerCase[10], c;
275			size_t length;
276
277			/*
278			* Convert the input string to all lower-case.
279			* INTL: This code will work on UTF strings.
280			*/
281
282			for (i = 0; i < 9; i++) {
283			c = string[i];
284			if (c == 0) {
285			break;
286			}
287			if ((c >= 'A') && (c <= 'Z')) {
288			c += (char) ('a' - 'A');
289			}
290			lowerCase[i] = c;
291			}
292			lowerCase[i] = 0;
293
294			length = strlen(lowerCase);
295			c = lowerCase[0];
296			if ((c == '0') && (lowerCase[1] == '\0')) {
297			*boolPtr = 0;
298			} else if ((c == '1') && (lowerCase[1] == '\0')) {
299			*boolPtr = 1;
300			} else if ((c == 'y') && (strncmp(lowerCase, "yes", length) == 0)) {
301			*boolPtr = 1;
302			} else if ((c == 'n') && (strncmp(lowerCase, "no", length) == 0)) {
303			*boolPtr = 0;
304			} else if ((c == 't') && (strncmp(lowerCase, "true", length) == 0)) {
305			*boolPtr = 1;
306			} else if ((c == 'f') && (strncmp(lowerCase, "false", length) == 0)) {
307			*boolPtr = 0;
308			} else if ((c == 'o') && (length >= 2)) {
309			if (strncmp(lowerCase, "on", length) == 0) {
310			*boolPtr = 1;
311			} else if (strncmp(lowerCase, "off", length) == 0) {
312			*boolPtr = 0;
313			} else {
314			goto badBoolean;
315			}
316			} else {
317			badBoolean:
318			if (interp != (Tcl_Interp *) NULL) {
319			Tcl_AppendResult(interp, "expected boolean value but got \"",
320			string, "\"", (char *) NULL);
321			}
322			return TCL_ERROR;
323			}
324			return TCL_OK;
325			}
326
327
328			/* $History: tclget.c $
329			*
330			* *************** Version 1 ***************
331			* User: Dtashley Date: 1/02/01 Time: 1:30a
332			* Created in $/IjuScripter, IjuConsole/Source/Tcl Base
333			* Initial check-in.
334			*/
335
336			/* End of TCLGET.C */