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 8295 2007-08-11 17:57:24Z michi $
45 #include "mm/memory.h"
49 /* _Jv_getcwd ******************************************************************
51 Return the current working directory.
54 pointer to a char array allocated by MNEW, or
55 NULL if memory could not be allocated.
57 *******************************************************************************/
59 char *_Jv_getcwd(void)
66 buf = MNEW(char, size);
69 if (getcwd(buf, size) != NULL)
72 MFREE(buf, char, size);
74 /* too small buffer or a more serious problem */
77 vm_abort("getcwd failed: %s", strerror(errno));
79 /* double the buffer size */
83 buf = MNEW(char, size);
90 /* get_variable_message_length *************************************************
92 This function simluates the print of a variable message and
93 determines so the message length;
95 *******************************************************************************/
97 int get_variable_message_length(const char *fmt, va_list ap)
101 n = vsnprintf(NULL, 0, fmt, ap);
103 #if defined(__IRIX__)
104 /* We know that IRIX returns -1 if the buffer is NULL */
110 size = 100; /* start with 100-bytes */
112 p = MNEW(char, size);
115 /* Try to print in the allocated space. */
117 n = vsnprintf(p, size, fmt, ap);
119 /* If that worked, return the length. */
120 if (n > -1 && n < size)
123 /* Else try again with more space. */
124 size *= 2; /* twice the old size */
126 if ((np = MREALLOC(p, char, size, size)) == NULL) {
140 * These are local overrides for various environment variables in Emacs.
141 * Please do not remove this and leave it at the end of the file, where
142 * Emacs will automagically detect them.
143 * ---------------------------------------------------------------------
146 * indent-tabs-mode: t