576 lines
20 KiB
C
576 lines
20 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <stdio.h>
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#ifdef UNX
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#include <stdlib.h>
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#endif
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#include <ctype.h>
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#include "cppdef.h"
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#include "cpp.h"
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#include "time.h" /* BP */
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#include <string.h>
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#ifndef _NO_PROTO
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int AddInclude( char *pIncStr ); /* BP, 11.09.91, Forward-Deklaration */
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#endif
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#if (OSL_DEBUG_LEVEL > 1) && (HOST == SYS_VMS || HOST == SYS_UNIX)
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#include <signal.h>
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#endif
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void InitCpp3()
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{
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}
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int
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openfile(char* filename)
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/*
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* Open a file, add it to the linked list of open files.
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* This is called only from openfile() above.
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*/
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{
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register FILE *fp;
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if ((fp = fopen(filename, "r")) == NULL) {
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#if OSL_DEBUG_LEVEL > 1
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if ( debug || !bDumpDefs )
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perror(filename);
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#endif
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return (FALSE);
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}
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#if OSL_DEBUG_LEVEL > 1
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if (debug)
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fprintf(stderr, "Reading from \"%s\"\n", filename);
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#endif
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addfile(fp, filename);
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return (TRUE);
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}
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void addfile(FILE* fp, char* filename)
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/*
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* Initialize tables for this open file. This is called from openfile()
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* above (for #include files), and from the entry to cpp to open the main
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* input file. It calls a common routine, getfile() to build the FILEINFO
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* structure which is used to read characters. (getfile() is also called
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* to setup a macro replacement.)
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*/
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{
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register FILEINFO *file;
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extern FILEINFO *getfile( int, char * );
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file = getfile(NBUFF, filename);
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file->fp = fp; /* Better remember FILE * */
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file->buffer[0] = EOS; /* Initialize for first read */
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line = 1; /* Working on line 1 now */
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wrongline = TRUE; /* Force out initial #line */
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}
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void setincdirs()
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/*
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* Append system-specific directories to the include directory list.
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* Called only when cpp is started.
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*/
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{
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#ifdef CPP_INCLUDE
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*incend++ = CPP_INCLUDE;
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#define IS_INCLUDE 1
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#else
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#define IS_INCLUDE 0
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#endif
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#if HOST == SYS_UNIX
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*incend++ = "/usr/include";
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#define MAXINCLUDE (NINCLUDE - 1 - IS_INCLUDE)
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#endif
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#if HOST == SYS_VMS
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extern char *getenv();
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if (getenv("C$LIBRARY") != NULL)
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*incend++ = "C$LIBRARY:";
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*incend++ = "SYS$LIBRARY:";
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#define MAXINCLUDE (NINCLUDE - 2 - IS_INCLUDE)
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#endif
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#if HOST == SYS_RSX
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extern int $$rsts; /* TRUE on RSTS/E */
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extern int $$pos; /* TRUE on PRO-350 P/OS */
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extern int $$vms; /* TRUE on VMS compat. */
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if ($$pos) { /* P/OS? */
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*incend++ = "SY:[ZZDECUSC]"; /* C #includes */
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*incend++ = "LB:[1,5]"; /* RSX library */
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}
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else if ($$rsts) { /* RSTS/E? */
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*incend++ = "SY:@"; /* User-defined account */
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*incend++ = "C:"; /* Decus-C library */
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*incend++ = "LB:[1,1]"; /* RSX library */
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}
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else if ($$vms) { /* VMS compatibility? */
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*incend++ = "C:";
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}
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else { /* Plain old RSX/IAS */
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*incend++ = "LB:[1,1]";
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}
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#define MAXINCLUDE (NINCLUDE - 3 - IS_INCLUDE)
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#endif
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#if HOST == SYS_RT11
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extern int $$rsts; /* RSTS/E emulation? */
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if ($$rsts)
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*incend++ = "SY:@"; /* User-defined account */
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*incend++ = "C:"; /* Decus-C library disk */
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*incend++ = "SY:"; /* System (boot) disk */
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#define MAXINCLUDE (NINCLUDE - 3 - IS_INCLUDE)
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#endif
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#if HOST == SYS_UNKNOWN
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/*
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* Kontext: GenMake
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* Unter DOS wird nun auch die Environment-Variable INCLUDE ausgewetet.
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* Es kommt erschwerend hinzu, dass alle Eintraege, die mit ';' getrennt
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* sind, mit in die Liste aufenommen werden muessen.
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* Dies wird mit der Funktion strtok() realisiert.
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* Vorsicht bei der Benutzung von malloc !!!
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* In savestring wird naemlich getmem() verwendet. Vermutlich kommen sich
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* die beiden Funktion in die Quere. Als ich malloc statt savestring
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* verwendete knallte es in strcpy() !
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*/
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#if !defined( WNT ) && ! defined UNX
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extern char *getenv( char *pStr ); /* BP */
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#endif
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char *pIncGetEnv = NULL; /* Pointer auf INCLUDE */
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if ( ( pIncGetEnv = getenv("INCLUDE") ) != NULL )
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AddInclude( pIncGetEnv );
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#define MAXINCLUDE (NINCLUDE - 3 - IS_INCLUDE)
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#endif
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}
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/* Kontext: Erweiterung des INCLUDE-Services
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* Bislang konnte der cpp keine Include-Angaben in der Kommandozeile
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* vertragen, bei denen die directries mit ';' getrennt wurden.
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* Dies ist auch verstaendlich, da dieses cpp fuer UNIX-Systeme
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* massgeschneidert wurde und in UNI die ';' als Zeichen zum Abschluss
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* von Kommandos gilt.
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*/
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int AddInclude( char* pIncStr )
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{
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char *pIncEnv = NULL; /* Kopie des INCLUDE */
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char *pIncPos; /* wandert zum naechsten */
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pIncEnv = savestring( pIncStr );
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pIncPos = strtok( pIncEnv, ";" );
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while( pIncPos != NULL )
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{
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if (incend >= &incdir[MAXINCLUDE])
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cfatal("Too many include directories", NULLST);
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*incend++ = pIncPos;
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pIncPos = strtok( NULL, ";" );
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}
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return( 1 );
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}
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int
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dooptions(int argc, char** argv)
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/*
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* dooptions is called to process command line arguments (-Detc).
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* It is called only at cpp startup.
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*/
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{
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register char *ap;
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register DEFBUF *dp;
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register int c;
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int i, j;
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char *arg;
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SIZES *sizp; /* For -S */
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int size; /* For -S */
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int isdatum; /* FALSE for -S* */
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int endtest; /* For -S */
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for (i = j = 1; i < argc; i++) {
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arg = ap = argv[i];
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if (*ap++ != '-' || *ap == EOS)
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{
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argv[j++] = argv[i];
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}
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else {
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c = *ap++; /* Option byte */
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if (islower(c)) /* Normalize case */
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c = toupper(c);
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switch (c) { /* Command character */
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case 'C': /* Keep comments */
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cflag = TRUE;
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keepcomments = TRUE;
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break;
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case 'D': /* Define symbol */
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/*
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* If the option is just "-Dfoo", make it -Dfoo=1
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*/
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while (*ap != EOS && *ap != '=')
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ap++;
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if (*ap == EOS)
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ap = "1";
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else
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*ap++ = EOS;
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/*
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* Now, save the word and its definition.
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*/
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dp = defendel(argv[i] + 2, FALSE);
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dp->repl = savestring(ap);
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dp->nargs = DEF_NOARGS;
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break;
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case 'E': /* Ignore non-fatal */
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eflag = TRUE; /* errors. */
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break;
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case 'I': /* Include directory */
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AddInclude( ap ); /* BP, 11.09.91 */
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break;
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case 'N': /* No predefineds */
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nflag++; /* Repeat to undefine */
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break; /* __LINE__, etc. */
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case 'S':
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sizp = size_table;
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if (0 != (isdatum = (*ap != '*'))) /* If it's just -S, */
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endtest = T_FPTR; /* Stop here */
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else { /* But if it's -S* */
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ap++; /* Step over '*' */
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endtest = 0; /* Stop at end marker */
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}
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while (sizp->bits != endtest && *ap != EOS) {
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if (!isdigit(*ap)) { /* Skip to next digit */
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ap++;
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continue;
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}
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size = 0; /* Compile the value */
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while (isdigit(*ap)) {
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size *= 10;
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size += (*ap++ - '0');
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}
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if (isdatum)
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sizp->size = size; /* Datum size */
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else
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sizp->psize = size; /* Pointer size */
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sizp++;
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}
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if (sizp->bits != endtest)
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cwarn("-S, too few values specified in %s", argv[i]);
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else if (*ap != EOS)
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cwarn("-S, too many values, \"%s\" unused", ap);
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break;
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case 'U': /* Undefine symbol */
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if (defendel(ap, TRUE) == NULL)
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cwarn("\"%s\" wasn't defined", ap);
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break;
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#if OSL_DEBUG_LEVEL > 1
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case 'X': /* Debug */
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debug = (isdigit(*ap)) ? atoi(ap) : 1;
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#if (HOST == SYS_VMS || HOST == SYS_UNIX)
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signal(SIGINT, (void (*)(int)) abort); /* Trap "interrupt" */
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#endif
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fprintf(stderr, "Debug set to %d\n", debug);
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break;
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#endif
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#if OSL_DEBUG_LEVEL > 1
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case 'P': /* #define's dump */
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bDumpDefs = 1;
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fprintf(stderr, "Dump #define's is on\n");
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break;
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#endif
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default: /* What is this one? */
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cwarn("Unknown option \"%s\"", arg);
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fprintf(stderr, "The following options are valid:\n\
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-C\t\t\tWrite source file comments to output\n\
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-Dsymbol=value\tDefine a symbol with the given (optional) value\n\
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-Idirectory\t\tAdd a directory to the #include search list\n\
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-N\t\t\tDon't predefine target-specific names\n\
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-Stext\t\tSpecify sizes for #if sizeof\n\
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-Usymbol\t\tUndefine symbol\n");
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#if OSL_DEBUG_LEVEL > 1
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fprintf(stderr, " -Xvalue\t\tSet internal debug flag\n");
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fprintf(stderr, " -P\t\t\tdump #define's\n");
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#endif
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break;
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} /* Switch on all options */
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} /* If it's a -option */
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} /* For all arguments */
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#if OSL_DEBUG_LEVEL > 1
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if ( (bDumpDefs ? j > 4 : j > 3) ) {
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#else
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if (j > 3) {
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#endif
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cerror(
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"Too many file arguments. Usage: cpp [input [output]]",
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NULLST);
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}
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return (j); /* Return new argc */
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}
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int
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readoptions(char* filename, char*** pfargv)
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{
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FILE *fp;
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int c;
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int bInQuotes = 0;
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char optbuff[1024], *poptbuff;
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int fargc=0, back;
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char *fargv[PARALIMIT], **pfa;
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pfa=*pfargv=malloc(sizeof(fargv));
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poptbuff=&optbuff[0];
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filename++;
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if ((fp = fopen(filename, "r")) == NULL) {
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#if OSL_DEBUG_LEVEL > 1
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if ( debug || !bDumpDefs )
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perror(filename);
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#endif
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return (FALSE);
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}
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do
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{
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/*
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* #i27914# double ticks '"' now have a duplicate function:
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* 1. they define a string ( e.g. -DFOO="baz" )
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* 2. a string can contain spaces, so -DFOO="baz zum" defines one
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* argument no two !
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*/
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c=fgetc(fp);
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if ( c != ' ' && c != CR && c != NL && c != HT && c != EOF)
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{
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*poptbuff++=(char)c;
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if( c == '"' )
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bInQuotes = ~bInQuotes;
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}
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else
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{
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if( c != EOF && bInQuotes )
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*poptbuff++=(char)c;
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else
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{
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*poptbuff=EOS;
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if (strlen(optbuff)>0)
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{
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pfa[fargc+1]=malloc(strlen(optbuff)+1);
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strcpy(pfa[fargc+1],optbuff);
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fargc++;
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pfa[fargc+1]=0;
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poptbuff=&optbuff[0];
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}
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}
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}
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}
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while ( c != EOF );
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fclose(fp);
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back=dooptions(fargc+1,pfa);
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return (back);
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}
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#if HOST != SYS_UNIX
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FILE_LOCAL void
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zap_uc(char* ap)
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/*
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* Dec operating systems mangle upper-lower case in command lines.
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* This routine forces the -D and -U arguments to uppercase.
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* It is called only on cpp startup by dooptions().
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*/
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{
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while (*ap != EOS) {
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/*
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* Don't use islower() here so it works with Multinational
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*/
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if (*ap >= 'a' && *ap <= 'z')
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*ap = (char)toupper(*ap);
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ap++;
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}
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}
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#endif
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void initdefines()
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/*
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* Initialize the built-in #define's. There are two flavors:
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* #define decus 1 (static definitions)
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* #define __FILE__ ?? (dynamic, evaluated by magic)
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* Called only on cpp startup.
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*
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* Note: the built-in static definitions are supressed by the -N option.
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* __LINE__, __FILE__, and __DATE__ are always present.
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*/
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{
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register char **pp;
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register char *tp;
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register DEFBUF *dp;
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int i;
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time_t tvec;
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#if !defined( WNT ) && !defined(G3)
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extern char *ctime();
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#endif
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/*
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* Predefine the built-in symbols. Allow the
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* implementor to pre-define a symbol as "" to
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* eliminate it.
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*/
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if (nflag == 0) {
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for (pp = preset; *pp != NULL; pp++) {
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if (*pp[0] != EOS) {
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dp = defendel(*pp, FALSE);
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dp->repl = savestring("1");
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dp->nargs = DEF_NOARGS;
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}
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}
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}
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/*
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* The magic pre-defines (__FILE__ and __LINE__ are
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* initialized with negative argument counts. expand()
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* notices this and calls the appropriate routine.
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* DEF_NOARGS is one greater than the first "magic" definition.
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*/
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if (nflag < 2) {
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for (pp = magic, i = DEF_NOARGS; *pp != NULL; pp++) {
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dp = defendel(*pp, FALSE);
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dp->nargs = --i;
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}
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#if OK_DATE
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/*
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* Define __DATE__ as today's date.
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*/
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dp = defendel("__DATE__", FALSE);
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dp->repl = tp = getmem(27);
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dp->nargs = DEF_NOARGS;
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time( &tvec);
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*tp++ = '"';
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strcpy(tp, ctime(&tvec));
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tp[24] = '"'; /* Overwrite newline */
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#endif
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}
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}
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#if HOST == SYS_VMS
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/*
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* getredirection() is intended to aid in porting C programs
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* to VMS (Vax-11 C) which does not support '>' and '<'
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* I/O redirection. With suitable modification, it may
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* useful for other portability problems as well.
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*/
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int
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getredirection(argc, argv)
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int argc;
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char **argv;
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/*
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* Process vms redirection arg's. Exit if any error is seen.
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* If getredirection() processes an argument, it is erased
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* from the vector. getredirection() returns a new argc value.
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*
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* Warning: do not try to simplify the code for vms. The code
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* presupposes that getredirection() is called before any data is
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* read from stdin or written to stdout.
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*
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* Normal usage is as follows:
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*
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* main(argc, argv)
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* int argc;
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* char *argv[];
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* {
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* argc = getredirection(argc, argv);
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* }
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*/
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{
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register char *ap; /* Argument pointer */
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int i; /* argv[] index */
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int j; /* Output index */
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int file; /* File_descriptor */
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extern int errno; /* Last vms i/o error */
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for (j = i = 1; i < argc; i++) { /* Do all arguments */
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switch (*(ap = argv[i])) {
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case '<': /* <file */
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if (freopen(++ap, "r", stdin) == NULL) {
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perror(ap); /* Can't find file */
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|
exit(errno); /* Is a fatal error */
|
|
}
|
|
break;
|
|
|
|
case '>': /* >file or >>file */
|
|
if (*++ap == '>') { /* >>file */
|
|
/*
|
|
* If the file exists, and is writable by us,
|
|
* call freopen to append to the file (using the
|
|
* file's current attributes). Otherwise, create
|
|
* a new file with "vanilla" attributes as if the
|
|
* argument was given as ">filename".
|
|
* access(name, 2) returns zero if we can write on
|
|
* the specified file.
|
|
*/
|
|
if (access(++ap, 2) == 0) {
|
|
if (freopen(ap, "a", stdout) != NULL)
|
|
break; /* Exit case statement */
|
|
perror(ap); /* Error, can't append */
|
|
exit(errno); /* After access test */
|
|
} /* If file accessible */
|
|
}
|
|
/*
|
|
* On vms, we want to create the file using "standard"
|
|
* record attributes. creat(...) creates the file
|
|
* using the caller's default protection mask and
|
|
* "variable length, implied carriage return"
|
|
* attributes. dup2() associates the file with stdout.
|
|
*/
|
|
if ((file = creat(ap, 0, "rat=cr", "rfm=var")) == -1
|
|
|| dup2(file, fileno(stdout)) == -1) {
|
|
perror(ap); /* Can't create file */
|
|
exit(errno); /* is a fatal error */
|
|
} /* If '>' creation */
|
|
break; /* Exit case test */
|
|
|
|
default:
|
|
argv[j++] = ap; /* Not a redirector */
|
|
break; /* Exit case test */
|
|
}
|
|
} /* For all arguments */
|
|
argv[j] = NULL; /* Terminate argv[] */
|
|
return (j); /* Return new argc */
|
|
}
|
|
#endif
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|