1 /* src/toolbox/util.c - contains some utility functions
3 Copyright (C) 1996-2005, 2006, 2008
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
35 #include "mm/memory.h"
39 /* _Jv_getcwd ******************************************************************
41 Return the current working directory.
44 pointer to a char array allocated by MNEW, or
45 NULL if memory could not be allocated.
47 *******************************************************************************/
49 char *_Jv_getcwd(void)
56 buf = MNEW(char, size);
59 if (getcwd(buf, size) != NULL)
62 MFREE(buf, char, size);
64 /* too small buffer or a more serious problem */
67 vm_abort("getcwd failed: %s", strerror(errno));
69 /* double the buffer size */
73 buf = MNEW(char, size);
80 /* get_variable_message_length *************************************************
82 This function simluates the print of a variable message and
83 determines so the message length;
85 *******************************************************************************/
87 int get_variable_message_length(const char *fmt, va_list ap)
91 n = vsnprintf(NULL, 0, fmt, ap);
94 /* We know that IRIX returns -1 if the buffer is NULL */
100 size = 100; /* start with 100-bytes */
102 p = MNEW(char, size);
105 /* Try to print in the allocated space. */
107 n = vsnprintf(p, size, fmt, ap);
109 /* If that worked, return the length. */
110 if (n > -1 && n < size)
113 /* Else try again with more space. */
114 size *= 2; /* twice the old size */
116 if ((np = MREALLOC(p, char, size, size)) == NULL) {
130 * These are local overrides for various environment variables in Emacs.
131 * Please do not remove this and leave it at the end of the file, where
132 * Emacs will automagically detect them.
133 * ---------------------------------------------------------------------
136 * indent-tabs-mode: t