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101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/* Copyright (c) 2005-2022 Jay Berkenbilt
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*
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* This file is part of qpdf.
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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* Versions of qpdf prior to version 7 were released under the terms
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* of version 2.0 of the Artistic License. At your option, you may
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* continue to consider qpdf to be licensed under those terms. Please
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* see the manual for additional information.
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*/
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#ifndef QPDFLOGGER_H
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#define QPDFLOGGER_H
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/*
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* This file provides a C API for QPDFLogger. See QPDFLogger.hh for
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* information about the logger.
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*/
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#include <qpdf/DLL.h>
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* To operate on a logger, you need a handle to it. call
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* qpdflogger_default_logger to get a handle for the default
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* logger. The qpdf and qpdfjob functions may offer ways to get
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* other logger handles. When you're done with the logger handler,
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* call qpdflogger_cleanup. This does not destroy the underlying
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* log object. It just cleans up the handle to it.
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*/
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typedef struct _qpdflogger_handle* qpdflogger_handle;
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QPDF_DLL
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qpdflogger_handle qpdflogger_default_logger();
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QPDF_DLL
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void qpdflogger_cleanup(qpdflogger_handle* l);
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enum qpdf_log_dest_e {
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qpdf_log_dest_default = 0,
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qpdf_log_dest_stdout = 1,
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qpdf_log_dest_stderr = 2,
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qpdf_log_dest_discard = 3,
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qpdf_log_dest_custom = 4,
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};
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typedef void (*qpdf_log_fn_t)(char const* data, size_t len, void* udata);
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QPDF_DLL
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void qpdflogger_set_info(
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qpdflogger_handle l,
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enum qpdf_log_dest_e dest,
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qpdf_log_fn_t fn,
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void* udata);
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QPDF_DLL
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void qpdflogger_set_warn(
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qpdflogger_handle l,
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enum qpdf_log_dest_e dest,
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qpdf_log_fn_t fn,
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void* udata);
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QPDF_DLL
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void qpdflogger_set_error(
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qpdflogger_handle l,
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enum qpdf_log_dest_e dest,
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qpdf_log_fn_t fn,
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void* udata);
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/* A non-zero value for only_if_not_set means that the save
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* pipeline will only be changed if it is not already set.
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*/
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QPDF_DLL
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void qpdflogger_set_save(
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qpdflogger_handle l,
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enum qpdf_log_dest_e dest,
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qpdf_log_fn_t fn,
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void* udata,
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int only_if_not_set);
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QPDF_DLL
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void qpdflogger_save_to_standard_output(
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qpdflogger_handle l, int only_if_not_set);
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#ifdef __cplusplus
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}
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#endif
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#endif // QPDFLOGGER_H
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