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* Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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struct et_list *_et_list = NULL;
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error_message (long code)
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const char *p = com_right(_et_list, code);
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snprintf(msg, sizeof(msg), "Unknown error %ld", code);
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if (p != NULL && *p != '\0') {
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strlcpy(msg, p, sizeof(msg));
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snprintf(msg, sizeof(msg), "Unknown error %ld", code);
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init_error_table(const char **msgs, long base, int count)
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initialize_error_table_r(&_et_list, msgs, count, base);
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default_proc (const char *whoami, long code, const char *fmt, va_list args)
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__attribute__((__format__(__printf__, 3, 0)));
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default_proc (const char *whoami, long code, const char *fmt, va_list args)
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fprintf(stderr, "%s: ", whoami);
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fprintf(stderr, "%s ", error_message(code));
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vfprintf(stderr, fmt, args);
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fprintf(stderr, "\r\n"); /* ??? */
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static errf com_err_hook = default_proc;
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com_err_va (const char *whoami,
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(*com_err_hook) (whoami, code, fmt, args);
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com_err (const char *whoami,
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com_err_va (whoami, code, fmt, ap);
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set_com_err_hook (errf new)
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errf old = com_err_hook;
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com_err_hook = default_proc;
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reset_com_err_hook (void)
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return set_com_err_hook(NULL);
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#define ERRCODE_RANGE 8 /* # of bits to shift table number */
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#define BITS_PER_CHAR 6 /* # bits to shift per character in name */
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static const char char_set[] =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
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error_table_name(int num)
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/* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
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num >>= ERRCODE_RANGE;
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/* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
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/* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
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for (i = 4; i >= 0; i--) {
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ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
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*p++ = char_set[ch-1];
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add_to_error_table(struct et_list *new_table)
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for (et = _et_list; et; et = et->next) {
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if (et->table->base == new_table->table->base)
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new_table->next = _et_list;
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_et_list = new_table;