mirror of
https://github.com/tesseract-ocr/tesseract.git
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99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
/**********************************************************************
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* File: errcode.cpp (Formerly error.c)
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* Description: Generic error handler function
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* Author: Ray Smith
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*
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* (C) Copyright 1989, Hewlett-Packard Ltd.
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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** http://www.apache.org/licenses/LICENSE-2.0
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*
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**********************************************************************/
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#include "errcode.h"
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#include <cstdarg>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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namespace tesseract {
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constexpr ERRCODE BADERRACTION("Illegal error action");
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#define MAX_MSG 1024
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/**********************************************************************
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* error
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*
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* Print an error message and continue, exit or abort according to action.
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* Makes use of error messages and numbers in a common place.
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*
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**********************************************************************/
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void ERRCODE::error( // handle error
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const char *caller, // name of caller
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TessErrorLogCode action, // action to take
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const char *format, ... // special message
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) const {
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va_list args; // variable args
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char msg[MAX_MSG];
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char *msgptr = msg;
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if (caller != nullptr) {
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// name of caller
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msgptr += sprintf(msgptr, "%s:", caller);
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}
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// actual message
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msgptr += sprintf(msgptr, "Error:%s", message);
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if (format != nullptr) {
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msgptr += sprintf(msgptr, ":");
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va_start(args, format); // variable list
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#ifdef _WIN32
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// print remainder
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msgptr += _vsnprintf(msgptr, MAX_MSG - 2 - (msgptr - msg), format, args);
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msg[MAX_MSG - 2] = '\0'; // ensure termination
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strcat(msg, "\n");
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#else
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// print remainder
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msgptr += vsprintf(msgptr, format, args);
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// no specific
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msgptr += sprintf(msgptr, "\n");
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#endif
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va_end(args);
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} else {
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// no specific
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msgptr += sprintf(msgptr, "\n");
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}
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// %s is needed here so msg is printed correctly!
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fprintf(stderr, "%s", msg);
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switch (action) {
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case DBG:
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case TESSLOG:
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return; // report only
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case TESSEXIT:
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case ABORT:
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#if !defined(NDEBUG)
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// Create a deliberate abnormal exit as the stack trace is more useful
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// that way. This is done only in debug builds, because the
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// error message "segmentation fault" confuses most normal users.
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# if defined(__GNUC__)
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__builtin_trap();
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# else
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*reinterpret_cast<int *>(0) = 0;
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# endif
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#endif
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abort();
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default:
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BADERRACTION.error("error", ABORT, nullptr);
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}
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}
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} // namespace tesseract
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