diff options
author | Jay Berkenbilt <ejb@ql.org> | 2018-08-14 01:48:02 +0200 |
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committer | Jay Berkenbilt <ejb@ql.org> | 2018-08-14 02:01:51 +0200 |
commit | b4bdc42b4fd627529e1c4a4636d1631254a2f26e (patch) | |
tree | 4a3526842ce36c08fef94ec7f60da585a505d6ce /include | |
parent | 164cbdde46d7ec6924782a60f346a6a465a79a26 (diff) | |
download | qpdf-b4bdc42b4fd627529e1c4a4636d1631254a2f26e.tar.zst |
New exception class QPDFSystemError (fixes #221)
Diffstat (limited to 'include')
-rw-r--r-- | include/qpdf/QPDFSystemError.hh | 58 | ||||
-rw-r--r-- | include/qpdf/QUtil.hh | 9 |
2 files changed, 65 insertions, 2 deletions
diff --git a/include/qpdf/QPDFSystemError.hh b/include/qpdf/QPDFSystemError.hh new file mode 100644 index 00000000..037bbe0a --- /dev/null +++ b/include/qpdf/QPDFSystemError.hh @@ -0,0 +1,58 @@ +// Copyright (c) 2005-2018 Jay Berkenbilt +// +// This file is part of qpdf. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +// +// Versions of qpdf prior to version 7 were released under the terms +// of version 2.0 of the Artistic License. At your option, you may +// continue to consider qpdf to be licensed under those terms. Please +// see the manual for additional information. + +#ifndef QPDFSYSTEMERROR_HH +#define QPDFSYSTEMERROR_HH + +#include <qpdf/DLL.h> +#include <qpdf/Types.h> + +#include <qpdf/Constants.h> +#include <string> +#include <stdexcept> + +class QPDFSystemError: public std::runtime_error +{ + public: + QPDF_DLL + QPDFSystemError(std::string const& description, + int system_errno); + QPDF_DLL + virtual ~QPDFSystemError() throw (); + + // To get a complete error string, call what(), provided by + // std::exception. The accessors below return the original values + // used to create the exception. + + QPDF_DLL + std::string const& getDescription() const; + QPDF_DLL + int getErrno() const; + + private: + static std::string createWhat(std::string const& description, + int system_errno); + + std::string description; + int system_errno; +}; + +#endif // QPDFSYSTEMERROR_HH diff --git a/include/qpdf/QUtil.hh b/include/qpdf/QUtil.hh index 68e64370..bcedd4d3 100644 --- a/include/qpdf/QUtil.hh +++ b/include/qpdf/QUtil.hh @@ -61,9 +61,14 @@ namespace QUtil QPDF_DLL unsigned char* unsigned_char_pointer(char const* str); - // Throw std::runtime_error with a string formed by appending to + // Throw QPDFSystemError, which is derived from + // std::runtime_error, with a string formed by appending to // "description: " the standard string corresponding to the - // current value of errno. + // current value of errno. You can retrieve the value of errno by + // calling getErrno() on the QPDFSystemError. Prior to qpdf 8.2.0, + // this method threw system::runtime_error directly, but since + // QPDFSystemError is derived from system::runtime_error, old code + // that specifically catches std::runtime_error will still work. QPDF_DLL void throw_system_error(std::string const& description); |