| /************************************************************** |
| * |
| * 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; |
| } |