/* src/toolbox/util.c - contains some utility functions Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger, Institut f. Computersprachen - TU Wien This file is part of CACAO. This program 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 program 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 program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Contact: cacao@complang.tuwien.ac.at Authors: Christian Thalinger Changes: $Id: util.c 3019 2005-07-12 23:44:19Z twisti $ */ #include #include #include #include #include "types.h" #include "mm/memory.h" #include "vm/exceptions.h" #include "vm/stringlocal.h" /* getcwd ********************************************************************** XXX *******************************************************************************/ char *_Jv_getcwd(void) { char *buf; s4 size; size = 1024; buf = MNEW(char, size); while (buf) { if (getcwd(buf, size) != NULL) return buf; MFREE(buf, char, size); /* too small buffer or a more serious problem */ if (errno != ERANGE) throw_cacao_exception_exit(string_java_lang_InternalError, strerror(errno)); /* double the buffer size */ size *= 2; buf = MNEW(char, size); } return NULL; } /* get_variable_message_length ************************************************* This function simluates the print of a variable message and determines so the message length; *******************************************************************************/ int get_variable_message_length(const char *fmt, va_list ap) { int n; n = vsnprintf(NULL, 0, fmt, ap); #if defined(__IRIX__) /* We know that IRIX returns -1 if the buffer is NULL */ if (n == -1) { char *p, *np; s4 size; size = 100; /* start with 100-bytes */ p = MNEW(char, size); while (1) { /* Try to print in the allocated space. */ n = vsnprintf(p, size, fmt, ap); /* If that worked, return the length. */ if (n > -1 && n < size) return n; /* Else try again with more space. */ size *= 2; /* twice the old size */ if ((np = MREALLOC(p, char, size, size)) == NULL) { assert(0); } else { p = np; } } } #endif return n; } /* * These are local overrides for various environment variables in Emacs. * Please do not remove this and leave it at the end of the file, where * Emacs will automagically detect them. * --------------------------------------------------------------------- * Local variables: * mode: c * indent-tabs-mode: t * c-basic-offset: 4 * tab-width: 4 * End: */