ade9ba91cb
The relevant changes for FreeBSD (excerpt from the release note):
* Newly implemented CORE EXT words: CASE, OF, ENDOF, and ENDCASE. Also
added FALLTHROUGH, which works like ENDOF but jumps to the instruction
just after the next OF.
* Bugfix: John-Hopkins locals syntax now accepts | and -- in the comment
(between the first -- and the }.)
* Bugfix: Changed vmGetWord0() to make Purify happier. The resulting
code is no slower, no larger, and slightly more robust.
806 lines
22 KiB
C
806 lines
22 KiB
C
/*******************************************************************
|
|
** v m . c
|
|
** Forth Inspired Command Language - virtual machine methods
|
|
** Author: John Sadler (john_sadler@alum.mit.edu)
|
|
** Created: 19 July 1997
|
|
** $Id: vm.c,v 1.13 2001/12/05 07:21:34 jsadler Exp $
|
|
*******************************************************************/
|
|
/*
|
|
** This file implements the virtual machine of FICL. Each virtual
|
|
** machine retains the state of an interpreter. A virtual machine
|
|
** owns a pair of stacks for parameters and return addresses, as
|
|
** well as a pile of state variables and the two dedicated registers
|
|
** of the interp.
|
|
*/
|
|
/*
|
|
** Copyright (c) 1997-2001 John Sadler (john_sadler@alum.mit.edu)
|
|
** All rights reserved.
|
|
**
|
|
** Get the latest Ficl release at http://ficl.sourceforge.net
|
|
**
|
|
** I am interested in hearing from anyone who uses ficl. If you have
|
|
** a problem, a success story, a defect, an enhancement request, or
|
|
** if you would like to contribute to the ficl release, please
|
|
** contact me by email at the address above.
|
|
**
|
|
** L I C E N S E and D I S C L A I M E R
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
** ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
** SUCH DAMAGE.
|
|
*/
|
|
|
|
/* $FreeBSD$ */
|
|
|
|
#ifdef TESTMAIN
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <ctype.h>
|
|
#else
|
|
#include <stand.h>
|
|
#endif
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
#include "ficl.h"
|
|
|
|
static char digits[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
|
|
|
|
|
|
/**************************************************************************
|
|
v m B r a n c h R e l a t i v e
|
|
**
|
|
**************************************************************************/
|
|
void vmBranchRelative(FICL_VM *pVM, int offset)
|
|
{
|
|
pVM->ip += offset;
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m C r e a t e
|
|
** Creates a virtual machine either from scratch (if pVM is NULL on entry)
|
|
** or by resizing and reinitializing an existing VM to the specified stack
|
|
** sizes.
|
|
**************************************************************************/
|
|
FICL_VM *vmCreate(FICL_VM *pVM, unsigned nPStack, unsigned nRStack)
|
|
{
|
|
if (pVM == NULL)
|
|
{
|
|
pVM = (FICL_VM *)ficlMalloc(sizeof (FICL_VM));
|
|
assert (pVM);
|
|
memset(pVM, 0, sizeof (FICL_VM));
|
|
}
|
|
|
|
if (pVM->pStack)
|
|
stackDelete(pVM->pStack);
|
|
pVM->pStack = stackCreate(nPStack);
|
|
|
|
if (pVM->rStack)
|
|
stackDelete(pVM->rStack);
|
|
pVM->rStack = stackCreate(nRStack);
|
|
|
|
#if FICL_WANT_FLOAT
|
|
if (pVM->fStack)
|
|
stackDelete(pVM->fStack);
|
|
pVM->fStack = stackCreate(nPStack);
|
|
#endif
|
|
|
|
pVM->textOut = ficlTextOut;
|
|
|
|
vmReset(pVM);
|
|
return pVM;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m D e l e t e
|
|
** Free all memory allocated to the specified VM and its subordinate
|
|
** structures.
|
|
**************************************************************************/
|
|
void vmDelete (FICL_VM *pVM)
|
|
{
|
|
if (pVM)
|
|
{
|
|
ficlFree(pVM->pStack);
|
|
ficlFree(pVM->rStack);
|
|
#if FICL_WANT_FLOAT
|
|
ficlFree(pVM->fStack);
|
|
#endif
|
|
ficlFree(pVM);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m E x e c u t e
|
|
** Sets up the specified word to be run by the inner interpreter.
|
|
** Executes the word's code part immediately, but in the case of
|
|
** colon definition, the definition itself needs the inner interp
|
|
** to complete. This does not happen until control reaches ficlExec
|
|
**************************************************************************/
|
|
void vmExecute(FICL_VM *pVM, FICL_WORD *pWord)
|
|
{
|
|
pVM->runningWord = pWord;
|
|
pWord->code(pVM);
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m I n n e r L o o p
|
|
** the mysterious inner interpreter...
|
|
** This loop is the address interpreter that makes colon definitions
|
|
** work. Upon entry, it assumes that the IP points to an entry in
|
|
** a definition (the body of a colon word). It runs one word at a time
|
|
** until something does vmThrow. The catcher for this is expected to exist
|
|
** in the calling code.
|
|
** vmThrow gets you out of this loop with a longjmp()
|
|
** Visual C++ 5 chokes on this loop in Release mode. Aargh.
|
|
**************************************************************************/
|
|
#if INLINE_INNER_LOOP == 0
|
|
void vmInnerLoop(FICL_VM *pVM)
|
|
{
|
|
M_INNER_LOOP(pVM);
|
|
}
|
|
#endif
|
|
#if 0
|
|
/*
|
|
** Recast inner loop that inlines tokens for control structures, arithmetic and stack operations,
|
|
** as well as create does> : ; and various literals
|
|
*/
|
|
typedef enum
|
|
{
|
|
PATCH = 0,
|
|
L0,
|
|
L1,
|
|
L2,
|
|
LMINUS1,
|
|
LMINUS2,
|
|
DROP,
|
|
SWAP,
|
|
DUP,
|
|
PICK,
|
|
ROLL,
|
|
FETCH,
|
|
STORE,
|
|
BRANCH,
|
|
CBRANCH,
|
|
LEAVE,
|
|
TO_R,
|
|
R_FROM,
|
|
EXIT;
|
|
} OPCODE;
|
|
|
|
typedef CELL *IPTYPE;
|
|
|
|
void vmInnerLoop(FICL_VM *pVM)
|
|
{
|
|
IPTYPE ip = pVM->ip;
|
|
FICL_STACK *pStack = pVM->pStack;
|
|
|
|
for (;;)
|
|
{
|
|
OPCODE o = (*ip++).i;
|
|
CELL c;
|
|
switch (o)
|
|
{
|
|
case L0:
|
|
stackPushINT(pStack, 0);
|
|
break;
|
|
case L1:
|
|
stackPushINT(pStack, 1);
|
|
break;
|
|
case L2:
|
|
stackPushINT(pStack, 2);
|
|
break;
|
|
case LMINUS1:
|
|
stackPushINT(pStack, -1);
|
|
break;
|
|
case LMINUS2:
|
|
stackPushINT(pStack, -2);
|
|
break;
|
|
case DROP:
|
|
stackDrop(pStack, 1);
|
|
break;
|
|
case SWAP:
|
|
stackRoll(pStack, 1);
|
|
break;
|
|
case DUP:
|
|
stackPick(pStack, 0);
|
|
break;
|
|
case PICK:
|
|
c = *ip++;
|
|
stackPick(pStack, c.i);
|
|
break;
|
|
case ROLL:
|
|
c = *ip++;
|
|
stackRoll(pStack, c.i);
|
|
break;
|
|
case EXIT:
|
|
return;
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
/**************************************************************************
|
|
v m G e t D i c t
|
|
** Returns the address dictionary for this VM's system
|
|
**************************************************************************/
|
|
FICL_DICT *vmGetDict(FICL_VM *pVM)
|
|
{
|
|
assert(pVM);
|
|
return pVM->pSys->dp;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m G e t S t r i n g
|
|
** Parses a string out of the VM input buffer and copies up to the first
|
|
** FICL_STRING_MAX characters to the supplied destination buffer, a
|
|
** FICL_STRING. The destination string is NULL terminated.
|
|
**
|
|
** Returns the address of the first unused character in the dest buffer.
|
|
**************************************************************************/
|
|
char *vmGetString(FICL_VM *pVM, FICL_STRING *spDest, char delimiter)
|
|
{
|
|
STRINGINFO si = vmParseStringEx(pVM, delimiter, 0);
|
|
|
|
if (SI_COUNT(si) > FICL_STRING_MAX)
|
|
{
|
|
SI_SETLEN(si, FICL_STRING_MAX);
|
|
}
|
|
|
|
strncpy(spDest->text, SI_PTR(si), SI_COUNT(si));
|
|
spDest->text[SI_COUNT(si)] = '\0';
|
|
spDest->count = (FICL_COUNT)SI_COUNT(si);
|
|
|
|
return spDest->text + SI_COUNT(si) + 1;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m G e t W o r d
|
|
** vmGetWord calls vmGetWord0 repeatedly until it gets a string with
|
|
** non-zero length.
|
|
**************************************************************************/
|
|
STRINGINFO vmGetWord(FICL_VM *pVM)
|
|
{
|
|
STRINGINFO si = vmGetWord0(pVM);
|
|
|
|
if (SI_COUNT(si) == 0)
|
|
{
|
|
vmThrow(pVM, VM_RESTART);
|
|
}
|
|
|
|
return si;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m G e t W o r d 0
|
|
** Skip leading whitespace and parse a space delimited word from the tib.
|
|
** Returns the start address and length of the word. Updates the tib
|
|
** to reflect characters consumed, including the trailing delimiter.
|
|
** If there's nothing of interest in the tib, returns zero. This function
|
|
** does not use vmParseString because it uses isspace() rather than a
|
|
** single delimiter character.
|
|
**************************************************************************/
|
|
STRINGINFO vmGetWord0(FICL_VM *pVM)
|
|
{
|
|
char *pSrc = vmGetInBuf(pVM);
|
|
char *pEnd = vmGetInBufEnd(pVM);
|
|
STRINGINFO si;
|
|
FICL_UNS count = 0;
|
|
char ch = 0;
|
|
|
|
pSrc = skipSpace(pSrc, pEnd);
|
|
SI_SETPTR(si, pSrc);
|
|
|
|
/*
|
|
for (ch = *pSrc; (pEnd != pSrc) && !isspace(ch); ch = *++pSrc)
|
|
{
|
|
count++;
|
|
}
|
|
*/
|
|
|
|
/* Changed to make Purify happier. --lch */
|
|
for (;;)
|
|
{
|
|
if (pEnd == pSrc)
|
|
break;
|
|
ch = *pSrc;
|
|
if (isspace(ch))
|
|
break;
|
|
count++;
|
|
pSrc++;
|
|
}
|
|
|
|
SI_SETLEN(si, count);
|
|
|
|
if ((pEnd != pSrc) && isspace(ch)) /* skip one trailing delimiter */
|
|
pSrc++;
|
|
|
|
vmUpdateTib(pVM, pSrc);
|
|
|
|
return si;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m G e t W o r d T o P a d
|
|
** Does vmGetWord and copies the result to the pad as a NULL terminated
|
|
** string. Returns the length of the string. If the string is too long
|
|
** to fit in the pad, it is truncated.
|
|
**************************************************************************/
|
|
int vmGetWordToPad(FICL_VM *pVM)
|
|
{
|
|
STRINGINFO si;
|
|
char *cp = (char *)pVM->pad;
|
|
si = vmGetWord(pVM);
|
|
|
|
if (SI_COUNT(si) > nPAD)
|
|
SI_SETLEN(si, nPAD);
|
|
|
|
strncpy(cp, SI_PTR(si), SI_COUNT(si));
|
|
cp[SI_COUNT(si)] = '\0';
|
|
return (int)(SI_COUNT(si));
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m P a r s e S t r i n g
|
|
** Parses a string out of the input buffer using the delimiter
|
|
** specified. Skips leading delimiters, marks the start of the string,
|
|
** and counts characters to the next delimiter it encounters. It then
|
|
** updates the vm input buffer to consume all these chars, including the
|
|
** trailing delimiter.
|
|
** Returns the address and length of the parsed string, not including the
|
|
** trailing delimiter.
|
|
**************************************************************************/
|
|
STRINGINFO vmParseString(FICL_VM *pVM, char delim)
|
|
{
|
|
return vmParseStringEx(pVM, delim, 1);
|
|
}
|
|
|
|
STRINGINFO vmParseStringEx(FICL_VM *pVM, char delim, char fSkipLeading)
|
|
{
|
|
STRINGINFO si;
|
|
char *pSrc = vmGetInBuf(pVM);
|
|
char *pEnd = vmGetInBufEnd(pVM);
|
|
char ch;
|
|
|
|
if (fSkipLeading)
|
|
{ /* skip lead delimiters */
|
|
while ((pSrc != pEnd) && (*pSrc == delim))
|
|
pSrc++;
|
|
}
|
|
|
|
SI_SETPTR(si, pSrc); /* mark start of text */
|
|
|
|
for (ch = *pSrc; (pSrc != pEnd)
|
|
&& (ch != delim)
|
|
&& (ch != '\r')
|
|
&& (ch != '\n'); ch = *++pSrc)
|
|
{
|
|
; /* find next delimiter or end of line */
|
|
}
|
|
|
|
/* set length of result */
|
|
SI_SETLEN(si, pSrc - SI_PTR(si));
|
|
|
|
if ((pSrc != pEnd) && (*pSrc == delim)) /* gobble trailing delimiter */
|
|
pSrc++;
|
|
|
|
vmUpdateTib(pVM, pSrc);
|
|
return si;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m P o p
|
|
**
|
|
**************************************************************************/
|
|
CELL vmPop(FICL_VM *pVM)
|
|
{
|
|
return stackPop(pVM->pStack);
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m P u s h
|
|
**
|
|
**************************************************************************/
|
|
void vmPush(FICL_VM *pVM, CELL c)
|
|
{
|
|
stackPush(pVM->pStack, c);
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m P o p I P
|
|
**
|
|
**************************************************************************/
|
|
void vmPopIP(FICL_VM *pVM)
|
|
{
|
|
pVM->ip = (IPTYPE)(stackPopPtr(pVM->rStack));
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m P u s h I P
|
|
**
|
|
**************************************************************************/
|
|
void vmPushIP(FICL_VM *pVM, IPTYPE newIP)
|
|
{
|
|
stackPushPtr(pVM->rStack, (void *)pVM->ip);
|
|
pVM->ip = newIP;
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m P u s h T i b
|
|
** Binds the specified input string to the VM and clears >IN (the index)
|
|
**************************************************************************/
|
|
void vmPushTib(FICL_VM *pVM, char *text, FICL_INT nChars, TIB *pSaveTib)
|
|
{
|
|
if (pSaveTib)
|
|
{
|
|
*pSaveTib = pVM->tib;
|
|
}
|
|
|
|
pVM->tib.cp = text;
|
|
pVM->tib.end = text + nChars;
|
|
pVM->tib.index = 0;
|
|
}
|
|
|
|
|
|
void vmPopTib(FICL_VM *pVM, TIB *pTib)
|
|
{
|
|
if (pTib)
|
|
{
|
|
pVM->tib = *pTib;
|
|
}
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m Q u i t
|
|
**
|
|
**************************************************************************/
|
|
void vmQuit(FICL_VM *pVM)
|
|
{
|
|
stackReset(pVM->rStack);
|
|
pVM->fRestart = 0;
|
|
pVM->ip = NULL;
|
|
pVM->runningWord = NULL;
|
|
pVM->state = INTERPRET;
|
|
pVM->tib.cp = NULL;
|
|
pVM->tib.end = NULL;
|
|
pVM->tib.index = 0;
|
|
pVM->pad[0] = '\0';
|
|
pVM->sourceID.i = 0;
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m R e s e t
|
|
**
|
|
**************************************************************************/
|
|
void vmReset(FICL_VM *pVM)
|
|
{
|
|
vmQuit(pVM);
|
|
stackReset(pVM->pStack);
|
|
#if FICL_WANT_FLOAT
|
|
stackReset(pVM->fStack);
|
|
#endif
|
|
pVM->base = 10;
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m S e t T e x t O u t
|
|
** Binds the specified output callback to the vm. If you pass NULL,
|
|
** binds the default output function (ficlTextOut)
|
|
**************************************************************************/
|
|
void vmSetTextOut(FICL_VM *pVM, OUTFUNC textOut)
|
|
{
|
|
if (textOut)
|
|
pVM->textOut = textOut;
|
|
else
|
|
pVM->textOut = ficlTextOut;
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m T e x t O u t
|
|
** Feeds text to the vm's output callback
|
|
**************************************************************************/
|
|
void vmTextOut(FICL_VM *pVM, char *text, int fNewline)
|
|
{
|
|
assert(pVM);
|
|
assert(pVM->textOut);
|
|
(pVM->textOut)(pVM, text, fNewline);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
v m T h r o w
|
|
**
|
|
**************************************************************************/
|
|
void vmThrow(FICL_VM *pVM, int except)
|
|
{
|
|
if (pVM->pState)
|
|
longjmp(*(pVM->pState), except);
|
|
}
|
|
|
|
|
|
void vmThrowErr(FICL_VM *pVM, char *fmt, ...)
|
|
{
|
|
va_list va;
|
|
va_start(va, fmt);
|
|
vsprintf(pVM->pad, fmt, va);
|
|
vmTextOut(pVM, pVM->pad, 1);
|
|
va_end(va);
|
|
longjmp(*(pVM->pState), VM_ERREXIT);
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
w o r d I s I m m e d i a t e
|
|
**
|
|
**************************************************************************/
|
|
int wordIsImmediate(FICL_WORD *pFW)
|
|
{
|
|
return ((pFW != NULL) && (pFW->flags & FW_IMMEDIATE));
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
w o r d I s C o m p i l e O n l y
|
|
**
|
|
**************************************************************************/
|
|
int wordIsCompileOnly(FICL_WORD *pFW)
|
|
{
|
|
return ((pFW != NULL) && (pFW->flags & FW_COMPILE));
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
s t r r e v
|
|
**
|
|
**************************************************************************/
|
|
char *strrev( char *string )
|
|
{ /* reverse a string in-place */
|
|
int i = strlen(string);
|
|
char *p1 = string; /* first char of string */
|
|
char *p2 = string + i - 1; /* last non-NULL char of string */
|
|
char c;
|
|
|
|
if (i > 1)
|
|
{
|
|
while (p1 < p2)
|
|
{
|
|
c = *p2;
|
|
*p2 = *p1;
|
|
*p1 = c;
|
|
p1++; p2--;
|
|
}
|
|
}
|
|
|
|
return string;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
d i g i t _ t o _ c h a r
|
|
**
|
|
**************************************************************************/
|
|
char digit_to_char(int value)
|
|
{
|
|
return digits[value];
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
i s P o w e r O f T w o
|
|
** Tests whether supplied argument is an integer power of 2 (2**n)
|
|
** where 32 > n > 1, and returns n if so. Otherwise returns zero.
|
|
**************************************************************************/
|
|
int isPowerOfTwo(FICL_UNS u)
|
|
{
|
|
int i = 1;
|
|
FICL_UNS t = 2;
|
|
|
|
for (; ((t <= u) && (t != 0)); i++, t <<= 1)
|
|
{
|
|
if (u == t)
|
|
return i;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
l t o a
|
|
**
|
|
**************************************************************************/
|
|
char *ltoa( FICL_INT value, char *string, int radix )
|
|
{ /* convert long to string, any base */
|
|
char *cp = string;
|
|
int sign = ((radix == 10) && (value < 0));
|
|
int pwr;
|
|
|
|
assert(radix > 1);
|
|
assert(radix < 37);
|
|
assert(string);
|
|
|
|
pwr = isPowerOfTwo((FICL_UNS)radix);
|
|
|
|
if (sign)
|
|
value = -value;
|
|
|
|
if (value == 0)
|
|
*cp++ = '0';
|
|
else if (pwr != 0)
|
|
{
|
|
FICL_UNS v = (FICL_UNS) value;
|
|
FICL_UNS mask = (FICL_UNS) ~(-1 << pwr);
|
|
while (v)
|
|
{
|
|
*cp++ = digits[v & mask];
|
|
v >>= pwr;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
UNSQR result;
|
|
DPUNS v;
|
|
v.hi = 0;
|
|
v.lo = (FICL_UNS)value;
|
|
while (v.lo)
|
|
{
|
|
result = ficlLongDiv(v, (FICL_UNS)radix);
|
|
*cp++ = digits[result.rem];
|
|
v.lo = result.quot;
|
|
}
|
|
}
|
|
|
|
if (sign)
|
|
*cp++ = '-';
|
|
|
|
*cp++ = '\0';
|
|
|
|
return strrev(string);
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
u l t o a
|
|
**
|
|
**************************************************************************/
|
|
char *ultoa(FICL_UNS value, char *string, int radix )
|
|
{ /* convert long to string, any base */
|
|
char *cp = string;
|
|
DPUNS ud;
|
|
UNSQR result;
|
|
|
|
assert(radix > 1);
|
|
assert(radix < 37);
|
|
assert(string);
|
|
|
|
if (value == 0)
|
|
*cp++ = '0';
|
|
else
|
|
{
|
|
ud.hi = 0;
|
|
ud.lo = value;
|
|
result.quot = value;
|
|
|
|
while (ud.lo)
|
|
{
|
|
result = ficlLongDiv(ud, (FICL_UNS)radix);
|
|
ud.lo = result.quot;
|
|
*cp++ = digits[result.rem];
|
|
}
|
|
}
|
|
|
|
*cp++ = '\0';
|
|
|
|
return strrev(string);
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
c a s e F o l d
|
|
** Case folds a NULL terminated string in place. All characters
|
|
** get converted to lower case.
|
|
**************************************************************************/
|
|
char *caseFold(char *cp)
|
|
{
|
|
char *oldCp = cp;
|
|
|
|
while (*cp)
|
|
{
|
|
if (isupper(*cp))
|
|
*cp = (char)tolower(*cp);
|
|
cp++;
|
|
}
|
|
|
|
return oldCp;
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
s t r i n c m p
|
|
** (jws) simplified the code a bit in hopes of appeasing Purify
|
|
**************************************************************************/
|
|
int strincmp(char *cp1, char *cp2, FICL_UNS count)
|
|
{
|
|
int i = 0;
|
|
|
|
for (; 0 < count; ++cp1, ++cp2, --count)
|
|
{
|
|
i = tolower(*cp1) - tolower(*cp2);
|
|
if (i != 0)
|
|
return i;
|
|
else if (*cp1 == '\0')
|
|
return 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**************************************************************************
|
|
s k i p S p a c e
|
|
** Given a string pointer, returns a pointer to the first non-space
|
|
** char of the string, or to the NULL terminator if no such char found.
|
|
** If the pointer reaches "end" first, stop there. Pass NULL to
|
|
** suppress this behavior.
|
|
**************************************************************************/
|
|
char *skipSpace(char *cp, char *end)
|
|
{
|
|
assert(cp);
|
|
|
|
while ((cp != end) && isspace(*cp))
|
|
cp++;
|
|
|
|
return cp;
|
|
}
|
|
|
|
|