/* This is part of libio/iostream, providing -*- C++ -*- input/output. Copyright (C) 1993 Free Software Foundation This file is part of the GNU IO Library. This library 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. This library 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 this library; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. As a special exception, if you link this library with files compiled with a GNU compiler to produce an executable, this does not cause the resulting executable to be covered by the GNU General Public License. This exception does not however invalidate any other reasons why the executable file might be covered by the GNU General Public License. */ #include <libioP.h> #include "iostream.h" #include <string.h> istream& istream::getline(char* buf, int len, char delim) { _gcount = 0; if (len <= 0) { set(ios::failbit); return *this; } int ch; if (ipfx1()) { _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, _strbuf); streambuf *sb = rdbuf(); _gcount = _IO_getline_info(sb, buf, len - 1, delim, -1, &ch); if (ch != EOF) ch = sb->sbumpc(); if (ch == EOF) set (_gcount == 0 ? (ios::failbit|ios::eofbit) : ios::eofbit); else if (ch != (unsigned char) delim) { set(ios::failbit); sb->sungetc(); // Leave delimiter unread. } isfx(); _IO_cleanup_region_end (0); } else ch = EOF; buf[_gcount] = '\0'; if (ch == (unsigned char)delim) _gcount++; // The delimiter is counted in the gcount(). return *this; } istream& istream::get(char* buf, int len, char delim) { _gcount = 0; if (len <= 0) { set(ios::failbit); return *this; } if (ipfx1()) { _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, _strbuf); streambuf *sbuf = rdbuf(); int ch; _gcount = _IO_getline_info(sbuf, buf, len - 1, delim, -1, &ch); if (_gcount == 0 && ch == EOF) set(ios::failbit|ios::eofbit); isfx(); _IO_cleanup_region_end (0); } buf[_gcount] = '\0'; return *this; } // from Doug Schmidt #define CHUNK_SIZE 512 /* Reads an arbitrarily long input line terminated by a user-specified TERMINATOR. Super-nifty trick using recursion avoids unnecessary calls to NEW! */ char *_sb_readline (streambuf *sb, long& total, char terminator) { char buf[CHUNK_SIZE]; char *ptr; int ch; _IO_size_t count = _IO_getline_info(sb, buf, CHUNK_SIZE, terminator, -1, &ch); if (ch != EOF) ch = sb->sbumpc(); long old_total = total; total += count; if (ch != EOF && ch != terminator) { total++; // Include ch in total. ptr = _sb_readline(sb, total, terminator); if (ptr) { memcpy(ptr + old_total, buf, count); ptr[old_total+count] = ch; } return ptr; } ptr = new char[total+1]; if (ptr != NULL) { ptr[total] = '\0'; memcpy(ptr + total - count, buf, count); } return ptr; } /* Reads an arbitrarily long input line terminated by TERMINATOR. This routine allocates its own memory, so the user should only supply the address of a (char *). */ istream& istream::gets(char **s, char delim /* = '\n' */) { if (ipfx1()) { _IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, _strbuf); long size = 0; streambuf *sb = rdbuf(); *s = _sb_readline (sb, size, delim); _gcount = *s ? size : 0; if (sb->_flags & _IO_EOF_SEEN) { set(ios::eofbit); if (_gcount == 0) set(ios::failbit); } isfx(); _IO_cleanup_region_end (0); } else { _gcount = 0; *s = NULL; } return *this; }