76f8916b90
Interestingly, this mostly involves cleaning up our implementation of various <string.h> functions. Change-Id: Ifaef49b5cb997134f7bc0cc31bdac844bdb9e089
96 lines
2.7 KiB
C++
96 lines
2.7 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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* All rights reserved.
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*
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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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* are met:
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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <error.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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unsigned int error_message_count = 0;
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void (*error_print_progname)(void) = NULL;
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int error_one_per_line = 0;
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static void __error_head() {
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++error_message_count;
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if (error_print_progname != NULL) {
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error_print_progname();
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} else {
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fflush(stdout);
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fprintf(stderr, "%s:", getprogname());
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}
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}
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static void __error_tail(int status, int error) {
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if (error != 0) {
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fprintf(stderr, ": %s", strerror(error));
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}
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putc('\n', stderr);
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fflush(stderr);
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if (status != 0) {
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exit(status);
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}
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}
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void error(int status, int error, const char* fmt, ...) {
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__error_head();
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putc(' ', stderr);
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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__error_tail(status, error);
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}
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void error_at_line(int status, int error, const char* file, unsigned int line, const char* fmt, ...) {
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if (error_one_per_line) {
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static const char* last_file;
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static unsigned int last_line;
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if (last_line == line && last_file != NULL && strcmp(last_file, file) == 0) {
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return;
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}
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last_file = file;
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last_line = line;
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}
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__error_head();
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fprintf(stderr, "%s:%d: ", file, line);
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va_list ap;
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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__error_tail(status, error);
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}
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