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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#if (defined(_WIN32) || defined(_MSDOS) || defined(__IBMC__))
#include <io.h>
#else
#include <unistd.h>
#endif
#include "cpp.h"
static char wbuf[4 * OBS];
static char *wbp = wbuf;
static int EBCDIC_ExternTokenDetected = 0;
static int EBCDIC_StartTokenDetected = 0;
unsigned char toLatin1[256] =
{
0x00, 0x01, 0x02, 0x03, 0x9c, 0x09, 0x86, 0x7f, 0x97, 0x8d,
0x8e, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13,
0x9d, 0x0a, 0x08, 0x87, 0x18, 0x19, 0x92, 0x8f, 0x1c, 0x1d,
0x1e, 0x1f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x17, 0x1b,
0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x05, 0x06, 0x07, 0x90, 0x91,
0x16, 0x93, 0x94, 0x95, 0x96, 0x04, 0x98, 0x99, 0x9a, 0x9b,
0x14, 0x15, 0x9e, 0x1a, 0x20, 0xa0, 0xe2, 0xe4, 0xe0, 0xe1,
0xe3, 0xe5, 0xe7, 0xf1, 0xa2, 0x2e, 0x3c, 0x28, 0x2b, 0x7c,
0x26, 0xe9, 0xea, 0xeb, 0xe8, 0xed, 0xee, 0xef, 0xec, 0xdf,
0x21, 0x24, 0x2a, 0x29, 0x3b, 0x5e, 0x2d, 0x2f, 0xc2, 0xc4,
0xc0, 0xc1, 0xc3, 0xc5, 0xc7, 0xd1, 0xa6, 0x2c, 0x25, 0x5f,
0x3e, 0x3f, 0xf8, 0xc9, 0xca, 0xcb, 0xc8, 0xcd, 0xce, 0xcf,
0xcc, 0x60, 0x3a, 0x23, 0x40, 0x27, 0x3d, 0x22,
0xd8, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
0xab, 0xbb, 0xf0, 0xfd, 0xfe, 0xb1, 0xb0, 0x6a, 0x6b, 0x6c,
0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0xaa, 0xba, 0xe6, 0xb8,
0xc6, 0xa4, 0xb5, 0x7e, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78,
0x79, 0x7a, 0xa1, 0xbf, 0xd0, 0x5b, 0xde, 0xae, 0xac, 0xa3,
0xa5, 0xb7, 0xa9, 0xa7, 0xb6, 0xbc, 0xbd, 0xbe, 0xdd, 0xa8,
0xaf, 0x5d, 0xb4, 0xd7, 0x7b, 0x41, 0x42, 0x43, 0x44, 0x45,
0x46, 0x47, 0x48, 0x49, 0xad, 0xf4, 0xf6, 0xf2, 0xf3, 0xf5,
0x7d, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52,
0xb9, 0xfb, 0xfc, 0xf9, 0xfa, 0xff, 0x5c, 0xf7, 0x53, 0x54,
0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0xb2, 0xd4, 0xd6, 0xd2,
0xd3, 0xd5, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
0x38, 0x39, 0xb3, 0xdb, 0xdc, 0xd9, 0xda, 0x9f
};
#define MASK "\\x%x"
int
memcpy_EBCDIC( char * pwbuf, uchar *p, int len )
{
int currpos = 0;
int processedchars = 0;
if( len == 0 )
return 0;
if( len == 1 )
{
*pwbuf = *p;
return 1;
}
/* copy spaces until " or ' */
while( (p[ processedchars ] != '\"') && (p[ processedchars ] != '\'') )
pwbuf[ currpos++ ] = p[ processedchars++ ];
/* copy first " or ' */
pwbuf[ currpos++ ] = p[ processedchars++ ];
/* convert all characters until " or ' */
while( processedchars < (len - 1) )
{
if( p[ processedchars ] == '\\' )
{
switch( p[ ++processedchars ] )
{
case 'n':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\n'] );
processedchars++;
break;
case 't':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\t'] );
processedchars++;
break;
case 'v':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\v'] );
processedchars++;
break;
case 'b':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\b'] );
processedchars++;
break;
case 'r':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\r'] );
processedchars++;
break;
case 'f':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\f'] );
processedchars++;
break;
case 'a':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\a'] );
processedchars++;
break;
case '\\':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\\'] );
processedchars++;
break;
case '?':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\?'] );
processedchars++;
break;
case '\'':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\''] );
processedchars++;
break;
case '"':
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1['\"'] );
processedchars++;
break;
/* octal coded character? -> copy */
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
{
int startpos = currpos;
pwbuf[ currpos++ ] = '\\';
while( p[ processedchars ] >= '0' && p[ processedchars ] <= '7' && (currpos < startpos + 4) )
pwbuf[ currpos++ ] = (unsigned char)p[ processedchars++ ];
break;
}
/* hex coded character? -> copy */
case 'x':
case 'X':
{
int startpos = currpos;
pwbuf[ currpos++ ] = '\\';
pwbuf[ currpos++ ] = 'x';
processedchars++;
while( isxdigit( p[ processedchars ] ) && (currpos < startpos + 4) )
pwbuf[ currpos++ ] = (unsigned char)p[ processedchars++ ];
break;
}
}
}
else
currpos += sprintf( &pwbuf[ currpos ], MASK, toLatin1[p[ processedchars++ ]] );
}
/* copy last " or ' */
pwbuf[ currpos++ ] = p[ processedchars ];
return currpos;
}
void
maketokenrow(int size, Tokenrow * trp)
{
trp->max = size;
if (size > 0)
trp->bp = (Token *) domalloc(size * sizeof(Token));
else
trp->bp = NULL;
trp->tp = trp->bp;
trp->lp = trp->bp;
}
Token *
growtokenrow(Tokenrow * trp)
{
int ncur = trp->tp - trp->bp;
int nlast = trp->lp - trp->bp;
trp->max = 3 * trp->max / 2 + 1;
trp->bp = (Token *) realloc(trp->bp, trp->max * sizeof(Token));
trp->lp = &trp->bp[nlast];
trp->tp = &trp->bp[ncur];
return trp->lp;
}
/*
* Compare a row of tokens, ignoring the content of WS; return !=0 if different
*/
int
comparetokens(Tokenrow * tr1, Tokenrow * tr2)
{
Token *tp1, *tp2;
tp1 = tr1->tp;
tp2 = tr2->tp;
if (tr1->lp - tp1 != tr2->lp - tp2)
return 1;
for (; tp1 < tr1->lp; tp1++, tp2++)
{
if (tp1->type != tp2->type
|| (tp1->wslen == 0) != (tp2->wslen == 0)
|| tp1->len != tp2->len
|| strncmp((char *) tp1->t, (char *) tp2->t, tp1->len) != 0)
return 1;
}
return 0;
}
/*
* replace ntok tokens starting at dtr->tp with the contents of str.
* tp ends up pointing just beyond the replacement.
* Canonical whitespace is assured on each side.
*/
void
insertrow(Tokenrow * dtr, int ntok, Tokenrow * str)
{
int nrtok = rowlen(str);
dtr->tp += ntok;
adjustrow(dtr, nrtok - ntok);
dtr->tp -= ntok;
movetokenrow(dtr, str);
dtr->tp += nrtok;
}
/*
* make sure there is WS before trp->tp, if tokens might merge in the output
*/
void
makespace(Tokenrow * trp, Token * ntp)
{
uchar *tt;
Token *tp = trp->tp;
if (tp >= trp->lp)
return;
if (ntp->wslen)
{
tt = newstring(tp->t, tp->len, ntp->wslen);
strncpy((char *)tt, (char *)ntp->t - ntp->wslen, ntp->wslen);
tp->t = tt + ntp->wslen;
tp->wslen = ntp->wslen;
tp->flag |= XPWS;
}
}
/*
* Copy an entire tokenrow into another, at tp.
* It is assumed that there is enough space.
* Not strictly conforming.
*/
void
movetokenrow(Tokenrow * dtr, Tokenrow * str)
{
int nby;
/* nby = sizeof(Token) * (str->lp - str->bp); */
nby = (char *) str->lp - (char *) str->bp;
memmove(dtr->tp, str->bp, nby);
}
/*
* Move the tokens in a row, starting at tr->tp, rightward by nt tokens;
* nt may be negative (left move).
* The row may need to be grown.
* Non-strictly conforming because of the (char *), but easily fixed
*/
void
adjustrow(Tokenrow * trp, int nt)
{
int nby, size;
if (nt == 0)
return;
size = (trp->lp - trp->bp) + nt;
while (size > trp->max)
growtokenrow(trp);
/* nby = sizeof(Token) * (trp->lp - trp->tp); */
nby = (char *) trp->lp - (char *) trp->tp;
if (nby)
memmove(trp->tp + nt, trp->tp, nby);
trp->lp += nt;
}
/*
* Copy a row of tokens into the destination holder, allocating
* the space for the contents. Return the destination.
*/
Tokenrow *
copytokenrow(Tokenrow * dtr, Tokenrow * str)
{
int len = rowlen(str);
maketokenrow(len, dtr);
movetokenrow(dtr, str);
dtr->lp += len;
return dtr;
}
/*
* Produce a copy of a row of tokens. Start at trp->tp.
* The value strings are copied as well. The first token
* has WS available.
*/
Tokenrow *
normtokenrow(Tokenrow * trp)
{
Token *tp;
Tokenrow *ntrp = new(Tokenrow);
int len;
len = trp->lp - trp->tp;
if (len <= 0)
len = 1;
maketokenrow(len, ntrp);
for (tp = trp->tp; tp < trp->lp; tp++)
{
*ntrp->lp = *tp;
if (tp->len)
{
ntrp->lp->t = newstring(tp->t, tp->len, 1);
*ntrp->lp->t++ = ' ';
if (tp->wslen)
ntrp->lp->wslen = 1;
}
ntrp->lp++;
}
if (ntrp->lp > ntrp->bp)
ntrp->bp->wslen = 0;
return ntrp;
}
/*
* Debugging
*/
void
peektokens(Tokenrow * trp, char *str)
{
Token *tp;
tp = trp->tp;
flushout();
if (str)
fprintf(stderr, "%s ", str);
if (tp < trp->bp || tp > trp->lp)
fprintf(stderr, "(tp offset %ld) ", (long int) (tp - trp->bp));
for (tp = trp->bp; tp < trp->lp && tp < trp->bp + 32; tp++)
{
if (tp->type != NL)
{
int c = tp->t[tp->len];
tp->t[tp->len] = 0;
fprintf(stderr, "%s", tp->t);
tp->t[tp->len] = (uchar) c;
}
fprintf(stderr, tp == trp->tp ? "{%x*} " : "{%x} ", tp->type);
}
fprintf(stderr, "\n");
fflush(stderr);
}
void
puttokens(Tokenrow * trp)
{
Token *tp;
int len;
uchar *p;
if (Vflag)
peektokens(trp, "");
tp = trp->bp;
for (; tp < trp->lp; tp++)
{
if (tp->type != NL)
{
len = tp->len + tp->wslen;
p = tp->t - tp->wslen;
/* add parameter check to delete operator? */
if( Dflag )
{
if( (tp->type == NAME) && (strncmp( (char*)p, "delete", len ) == 0) )
{
Token* ntp = tp;
ntp++;
if( ntp->type == NAME )
{
uchar* np = ntp->t - ntp->wslen;
int nlen = ntp->len + ntp->wslen;
memcpy(wbp, "if(", 3 );
wbp += 4;
memcpy(wbp, np, nlen );
wbp += nlen;
memcpy(wbp, ")", 1 );
wbp++;
memcpy(wbp, p, len);
}
}
}
/* EBCDIC to ANSI conversion requested? */
if( Aflag )
{
/* keyword __ToLatin1__ found? -> do conversion! */
if( EBCDIC_StartTokenDetected )
{
/* previous token was 'extern'? -> don't convert current token! */
if( EBCDIC_ExternTokenDetected )
{
EBCDIC_ExternTokenDetected = 0;
memcpy(wbp, p, len);
}
else
{
/* current token is keyword 'extern'? -> don't convert following token! */
if( (tp->wslen == 0) && (strncmp( (char*)p, "extern", len ) == 0) )
{
EBCDIC_ExternTokenDetected = 1;
memcpy(wbp, p, len);
}
else
{
/* token is string or char? -> process EBCDIC to ANSI conversion */
if ((tp->type == STRING) || (tp->type == CCON))
len = memcpy_EBCDIC(wbp, p, len);
else
memcpy(wbp, p, len);
}
}
}
else
/* keyword __ToLatin1__ found? -> don't copy keyword and start conversion */
if( (tp->type == NAME) && (strncmp( (char*)p, "__ToLatin1__", len) == 0) )
{
EBCDIC_StartTokenDetected = 1;
len = 0;
}
else
memcpy(wbp, p, len);
}
else
memcpy(wbp, p, len);
wbp += len;
}
else
*wbp++ = '\n';
if (wbp >= &wbuf[OBS])
{
if ( write(1, wbuf, OBS) != -1 ) {
if (wbp > &wbuf[OBS])
memcpy(wbuf, wbuf + OBS, wbp - &wbuf[OBS]);
wbp -= OBS;
}
else exit(1);
}
}
trp->tp = tp;
if (cursource->fd == 0)
flushout();
}
void
flushout(void)
{
if (wbp > wbuf)
{
if ( write(1, wbuf, wbp - wbuf) != -1)
wbp = wbuf;
else
exit(1);
}
}
/*
* turn a row into just a newline
*/
void
setempty(Tokenrow * trp)
{
trp->tp = trp->bp;
trp->lp = trp->bp + 1;
*trp->bp = nltoken;
}
/*
* generate a number
*/
char *
outnum(char *p, int n)
{
if (n >= 10)
p = outnum(p, n / 10);
*p++ = (char) (n % 10 + '0');
return p;
}
/*
* allocate and initialize a new string from s, of length l, at offset o
* Null terminated.
*/
uchar *
newstring(uchar * s, int l, int o)
{
uchar *ns = (uchar *) domalloc(l + o + 1);
ns[l + o] = '\0';
return (uchar *) strncpy((char *) ns + o, (char *) s, l) - o;
}