kopia lustrzana https://gitlab.com/sane-project/backends
genesys: Move error-related functions to separate header
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/* sane - Scanner Access Now Easy.
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Copyright (C) 2019 Povilas Kanapickas <povilas@radix.lt>
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This file is part of the SANE package.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA.
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As a special exception, the authors of SANE give permission for
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additional uses of the libraries contained in this release of SANE.
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The exception is that, if you link a SANE library with other files
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to produce an executable, this does not by itself cause the
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resulting executable to be covered by the GNU General Public
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License. Your use of that executable is in no way restricted on
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account of linking the SANE library code into it.
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This exception does not, however, invalidate any other reasons why
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the executable file might be covered by the GNU General Public
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License.
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If you submit changes to SANE to the maintainers to be included in
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a subsequent release, you agree by submitting the changes that
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those changes may be distributed with this exception intact.
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If you write modifications of your own for SANE, it is your choice
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whether to permit this exception to apply to your modifications.
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If you do not wish that, delete this exception notice.
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*/
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#ifndef BACKEND_GENESYS_ERROR_H
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#define BACKEND_GENESYS_ERROR_H
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#include "../include/sane/sane.h"
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#include "../include/sane/sanei_backend.h"
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#include <stdexcept>
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#include <cstring>
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#include <string>
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#define DBG_error0 0 /* errors/warnings printed even with devuglevel 0 */
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#define DBG_error 1 /* fatal errors */
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#define DBG_init 2 /* initialization and scanning time messages */
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#define DBG_warn 3 /* warnings and non-fatal errors */
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#define DBG_info 4 /* informational messages */
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#define DBG_proc 5 /* starting/finishing functions */
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#define DBG_io 6 /* io functions */
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#define DBG_io2 7 /* io functions that are called very often */
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#define DBG_data 8 /* log image data */
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class SaneException : std::exception {
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public:
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SaneException(SANE_Status status) : status_(status)
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{
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set_msg(nullptr);
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}
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SaneException(SANE_Status status, const char* msg) : status_(status)
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{
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set_msg(msg);
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}
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SaneException(const char* msg) : SaneException(SANE_STATUS_INVAL, msg) {}
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SANE_Status status() const { return status_; }
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virtual const char* what() const noexcept override { return msg_.c_str(); }
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private:
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void set_msg(const char* msg)
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{
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const char* status_msg = sane_strstatus(status_);
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std::size_t status_msg_len = std::strlen(status_msg);
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if (msg) {
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std::size_t msg_len = std::strlen(msg);
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msg_.reserve(msg_len + status_msg_len + 3);
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msg_ = msg;
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msg_ += " : ";
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msg_ += status_msg;
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return;
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}
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msg_.reserve(status_msg_len);
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msg_ = status_msg;
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}
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std::string msg_;
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SANE_Status status_;
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};
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/**
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* call a function and return on error
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*/
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#define RIE(function) \
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do { status = function; \
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if (status != SANE_STATUS_GOOD) \
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{ \
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DBG(DBG_error, "%s: %s\n", __func__, sane_strstatus (status)); \
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return status; \
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} \
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} while (SANE_FALSE)
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// call a function and throw an exception on error
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#define TIE(function) \
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do { \
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SANE_Status tmp_status = function; \
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if (tmp_status != SANE_STATUS_GOOD) { \
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throw SaneException(tmp_status); \
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} \
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} while (false)
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#define DBGSTART DBG (DBG_proc, "%s start\n", __func__);
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#define DBGCOMPLETED DBG (DBG_proc, "%s completed\n", __func__);
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#endif // BACKEND_GENESYS_ERROR_H
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@ -81,6 +81,8 @@
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#include "../include/_stdint.h"
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#include "genesys_error.h"
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#include <algorithm>
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#include <array>
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#include <cstring>
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@ -92,81 +94,6 @@
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#include <string>
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#include <vector>
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#define DBG_error0 0 /* errors/warnings printed even with devuglevel 0 */
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#define DBG_error 1 /* fatal errors */
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#define DBG_init 2 /* initialization and scanning time messages */
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#define DBG_warn 3 /* warnings and non-fatal errors */
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#define DBG_info 4 /* informational messages */
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#define DBG_proc 5 /* starting/finishing functions */
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#define DBG_io 6 /* io functions */
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#define DBG_io2 7 /* io functions that are called very often */
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#define DBG_data 8 /* log image data */
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class SaneException : std::exception {
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public:
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SaneException(SANE_Status status) : status_(status)
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{
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set_msg(nullptr);
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}
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SaneException(SANE_Status status, const char* msg) : status_(status)
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{
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set_msg(msg);
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}
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SaneException(const char* msg) : SaneException(SANE_STATUS_INVAL, msg) {}
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SANE_Status status() const { return status_; }
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virtual const char* what() const noexcept override { return msg_.c_str(); }
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private:
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void set_msg(const char* msg)
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{
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const char* status_msg = sane_strstatus(status_);
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std::size_t status_msg_len = std::strlen(status_msg);
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if (msg) {
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std::size_t msg_len = std::strlen(msg);
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msg_.reserve(msg_len + status_msg_len + 3);
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msg_ = msg;
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msg_ += " : ";
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msg_ += status_msg;
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return;
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}
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msg_.reserve(status_msg_len);
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msg_ = status_msg;
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}
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std::string msg_;
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SANE_Status status_;
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};
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/**
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* call a function and return on error
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*/
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#define RIE(function) \
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do { status = function; \
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if (status != SANE_STATUS_GOOD) \
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{ \
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DBG(DBG_error, "%s: %s\n", __func__, sane_strstatus (status)); \
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return status; \
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} \
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} while (SANE_FALSE)
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// call a function and throw an exception on error
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#define TIE(function) \
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do { \
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SANE_Status tmp_status = function; \
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if (tmp_status != SANE_STATUS_GOOD) { \
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throw SaneException(tmp_status); \
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} \
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} while (false)
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#define DBGSTART DBG (DBG_proc, "%s start\n", __func__);
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#define DBGCOMPLETED DBG (DBG_proc, "%s completed\n", __func__);
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#define FREE_IFNOT_NULL(x) if(x!=NULL) { free(x); x=NULL;}
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#define GENESYS_RED 0
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