1 /* src/toolbox/util.c - contains some utility functions
3 Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
4 R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
5 C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
6 Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Christian Thalinger
31 $Id: util.c 3216 2005-09-19 13:07:54Z twisti $
43 #include "mm/memory.h"
44 #include "vm/exceptions.h"
45 #include "vm/stringlocal.h"
48 /* getcwd **********************************************************************
52 *******************************************************************************/
54 char *_Jv_getcwd(void)
61 buf = MNEW(char, size);
64 if (getcwd(buf, size) != NULL)
67 MFREE(buf, char, size);
69 /* too small buffer or a more serious problem */
72 throw_cacao_exception_exit(string_java_lang_InternalError,
75 /* double the buffer size */
79 buf = MNEW(char, size);
86 /* get_variable_message_length *************************************************
88 This function simluates the print of a variable message and
89 determines so the message length;
91 *******************************************************************************/
93 int get_variable_message_length(const char *fmt, va_list ap)
97 n = vsnprintf(NULL, 0, fmt, ap);
100 /* We know that IRIX returns -1 if the buffer is NULL */
106 size = 100; /* start with 100-bytes */
108 p = MNEW(char, size);
111 /* Try to print in the allocated space. */
113 n = vsnprintf(p, size, fmt, ap);
115 /* If that worked, return the length. */
116 if (n > -1 && n < size)
119 /* Else try again with more space. */
120 size *= 2; /* twice the old size */
122 if ((np = MREALLOC(p, char, size, size)) == NULL) {
136 * These are local overrides for various environment variables in Emacs.
137 * Please do not remove this and leave it at the end of the file, where
138 * Emacs will automagically detect them.
139 * ---------------------------------------------------------------------
142 * indent-tabs-mode: t