1 /* src/toolbox/util.c - contains some utility functions
3 Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, 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., 51 Franklin Street, Fifth Floor, Boston, MA
25 Contact: cacao@cacaojvm.org
27 Authors: Christian Thalinger
31 $Id: util.c 5252 2006-08-18 13:07:21Z twisti $
45 #include "mm/memory.h"
46 #include "vm/exceptions.h"
47 #include "vm/stringlocal.h"
51 /* _Jv_getcwd ******************************************************************
53 Return the current working directory.
56 pointer to a char array allocated by MNEW, or
57 NULL if memory could not be allocated.
59 *******************************************************************************/
61 char *_Jv_getcwd(void)
68 buf = MNEW(char, size);
71 if (getcwd(buf, size) != NULL)
74 MFREE(buf, char, size);
76 /* too small buffer or a more serious problem */
79 vm_abort("getcwd failed: %s", strerror(errno));
81 /* double the buffer size */
85 buf = MNEW(char, size);
92 /* get_variable_message_length *************************************************
94 This function simluates the print of a variable message and
95 determines so the message length;
97 *******************************************************************************/
99 int get_variable_message_length(const char *fmt, va_list ap)
103 n = vsnprintf(NULL, 0, fmt, ap);
105 #if defined(__IRIX__)
106 /* We know that IRIX returns -1 if the buffer is NULL */
112 size = 100; /* start with 100-bytes */
114 p = MNEW(char, size);
117 /* Try to print in the allocated space. */
119 n = vsnprintf(p, size, fmt, ap);
121 /* If that worked, return the length. */
122 if (n > -1 && n < size)
125 /* Else try again with more space. */
126 size *= 2; /* twice the old size */
128 if ((np = MREALLOC(p, char, size, size)) == NULL) {
142 * These are local overrides for various environment variables in Emacs.
143 * Please do not remove this and leave it at the end of the file, where
144 * Emacs will automagically detect them.
145 * ---------------------------------------------------------------------
148 * indent-tabs-mode: t