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-rw-r--r--contrib/groff/src/preproc/html/pushbackbuffer.cc338
1 files changed, 0 insertions, 338 deletions
diff --git a/contrib/groff/src/preproc/html/pushbackbuffer.cc b/contrib/groff/src/preproc/html/pushbackbuffer.cc
deleted file mode 100644
index 4bea451..0000000
--- a/contrib/groff/src/preproc/html/pushbackbuffer.cc
+++ /dev/null
@@ -1,338 +0,0 @@
-// -*- C++ -*-
-/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
- Written by Gaius Mulley (gaius@glam.ac.uk).
-
-This file is part of groff.
-
-groff is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
-version.
-
-groff is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-for more details.
-
-You should have received a copy of the GNU General Public License along
-with groff; see the file COPYING. If not, write to the Free Software
-Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-#include <stdio.h>
-#include <signal.h>
-#include <ctype.h>
-#include <string.h>
-#include <assert.h>
-#include <stdlib.h>
-#include <errno.h>
-#include "lib.h"
-#include "errarg.h"
-#include "error.h"
-#include "stringclass.h"
-#include "posix.h"
-
-#include <errno.h>
-#include <sys/types.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include "pushbackbuffer.h"
-#include "pre-html.h"
-
-#if !defined(TRUE)
-# define TRUE (1==1)
-#endif
-
-#if !defined(FALSE)
-# define FALSE (1==0)
-#endif
-
-# define ERROR(X) (void)(fprintf(stderr, "%s:%d error %s\n", __FILE__, __LINE__, X) && \
- (fflush(stderr)) && localexit(1))
-
-
-#define MAXPUSHBACKSTACK 4096 /* maximum number of character that can be pushed back */
-
-
-/*
- * constructor for pushBackBuffer
- */
-
-pushBackBuffer::pushBackBuffer (char *filename)
-{
- charStack = (char *)malloc(MAXPUSHBACKSTACK);
- if (charStack == 0) {
- sys_fatal("malloc");
- }
- stackPtr = 0; /* index to push back stack */
- debug = 0;
- verbose = 0;
- eofFound = FALSE;
- lineNo = 1;
- if (strcmp(filename, "") != 0) {
- stdIn = dup(0);
- close(0);
- if (open(filename, O_RDONLY) != 0) {
- sys_fatal("when trying to open file");
- } else {
- fileName = filename;
- }
- }
-}
-
-pushBackBuffer::~pushBackBuffer ()
-{
- int old;
-
- if (charStack != 0) {
- free(charStack);
- }
- close(0);
- /* restore stdin in file descriptor 0 */
- old = dup(stdIn);
- close(stdIn);
-}
-
-/*
- * localexit - wraps exit with a return code to aid the ERROR macro.
- */
-
-int localexit (int i)
-{
- exit(i);
- return( 1 );
-}
-
-/*
- * getPB - returns a character, possibly a pushed back character.
- */
-
-char pushBackBuffer::getPB (void)
-{
- if (stackPtr>0) {
- stackPtr--;
- return( charStack[stackPtr] );
- } else {
- char ch;
-
- if (read(0, &ch, 1) == 1) {
- if (verbose) {
- printf("%c", ch);
- }
- if (ch == '\n') {
- lineNo++;
- }
- return( ch );
- } else {
- eofFound = TRUE;
- return( eof );
- }
- }
-}
-
-/*
- * putPB - pushes a character onto the push back stack.
- * The same character is returned.
- */
-
-char pushBackBuffer::putPB (char ch)
-{
- if (stackPtr<MAXPUSHBACKSTACK) {
- charStack[stackPtr] = ch ;
- stackPtr++;
- } else {
- ERROR("max push back stack exceeded, increase MAXPUSHBACKSTACK constant");
- }
- return( ch );
-}
-
-/*
- * isWhite - returns TRUE if a white character is found. This character is NOT consumed.
- */
-
-static int isWhite (char ch)
-{
- return( (ch==' ') || (ch == '\t') || (ch == '\n') );
-}
-
-/*
- * skipToNewline - skips characters until a newline is seen.
- */
-
-void pushBackBuffer::skipToNewline (void)
-{
- char ch;
-
- while ((putPB(getPB()) != '\n') && (! eofFound)) {
- ch = getPB();
- }
-}
-
-/*
- * skipUntilToken - skips until a token is seen
- */
-
-void pushBackBuffer::skipUntilToken (void)
-{
- char ch;
-
- while ((isWhite(putPB(getPB())) || (putPB(getPB()) == '#')) && (! eofFound)) {
- ch = getPB();
- if (ch == '#') {
- skipToNewline();
- }
- }
-}
-
-/*
- * isString - returns TRUE if the string, s, matches the pushed back string.
- * if TRUE is returned then this string is consumed, otherwise it is
- * left alone.
- */
-
-int pushBackBuffer::isString (char *s)
-{
- int length=strlen(s);
- int i=0;
-
- while ((i<length) && (putPB(getPB())==s[i])) {
- if (getPB() != s[i]) {
- ERROR("assert failed");
- }
- i++;
- }
- if (i==length) {
- return( TRUE );
- } else {
- i--;
- while (i>=0) {
- if (putPB(s[i]) != s[i]) {
- ERROR("assert failed");
- }
- i--;
- }
- }
- return( FALSE );
-}
-
-/*
- * isDigit - returns TRUE if the character, ch, is a digit.
- */
-
-static int isDigit (char ch)
-{
- return( ((ch>='0') && (ch<='9')) );
-}
-
-/*
- * isHexDigit - returns TRUE if the character, ch, is a hex digit.
- */
-
-#if 0
-static int isHexDigit (char ch)
-{
- return( (isDigit(ch)) || ((ch>='a') && (ch<='f')) );
-}
-#endif
-
-/*
- * readInt - returns an integer from the input stream.
- */
-
-int pushBackBuffer::readInt (void)
-{
- int c =0;
- int i =0;
- int s =1;
- char ch=getPB();
-
- while (isWhite(ch)) {
- ch=getPB();
- }
- // now read integer
-
- if (ch == '-') {
- s = -1;
- ch = getPB();
- }
- while (isDigit(ch)) {
- i *= 10;
- if ((ch>='0') && (ch<='9')) {
- i += (int)(ch-'0');
- }
- ch = getPB();
- c++;
- }
- if (ch != putPB(ch)) {
- ERROR("assert failed");
- }
- return( i*s );
-}
-
-/*
- * convertToFloat - converts integers, a and b into a.b
- */
-
-static float convertToFloat (int a, int b)
-{
- int c=10;
- float f;
-
- while (b>c) {
- c *= 10;
- }
- f = ((float)a) + (((float)b)/((float)c));
- return( f );
-}
-
-/*
- * readNumber - returns a float representing the word just read.
- */
-
-float pushBackBuffer::readNumber (void)
-{
- int integer;
- int fraction;
- char ch;
- float f;
-
- integer = readInt();
- if (putPB(getPB()) == '.') {
- ch = getPB();
- fraction = readInt();
- f = convertToFloat(integer, fraction);
- return( f );
- } else {
- return( (float)integer );
- }
-}
-
-/*
- * readString - reads a string terminated by white space
- * and returns a malloced area of memory containing
- * a copy of the characters.
- */
-
-char *pushBackBuffer::readString (void)
-{
- char buffer[MAXPUSHBACKSTACK];
- char *string = 0;
- int i=0;
- char ch=getPB();
-
- while (isWhite(ch)) {
- ch=getPB();
- }
- while ((i < MAXPUSHBACKSTACK) && (! isWhite(ch)) && (! eofFound)) {
- buffer[i] = ch;
- i++;
- ch = getPB();
- }
- if (i < MAXPUSHBACKSTACK) {
- buffer[i] = (char)0;
- string = (char *)malloc(strlen(buffer)+1);
- strcpy(string, buffer);
- }
- return( string );
-}
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