From 433d4ef335b71b09729af5a9273c6ec78f3c475d Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Tue, 2 Sep 2014 19:13:59 +0200 Subject: most of libgamma-error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- src/libgamma-error.cc | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 src/libgamma-error.cc (limited to 'src/libgamma-error.cc') diff --git a/src/libgamma-error.cc b/src/libgamma-error.cc new file mode 100644 index 0000000..86ad1fd --- /dev/null +++ b/src/libgamma-error.cc @@ -0,0 +1,77 @@ +/** + * libgammamm -- C++ wrapper for libgamma + * Copyright (C) 2014 Mattias Andrée (maandree@member.fsf.org) + * + * This library is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this library. If not, see . + */ +#include "libgamma-error.hh" +#include + + +namespace libgamma +{ + /** + * Prints an error to stderr in a `perror` fashion, + * however this function will not translate the `libgamma` + * errors into human-readable strings, it will simply + * print the name of the error. If the value `error_code` + * is the value of `LIBGAMMA_ERRNO_SET`, `perror` will be + * used to print the current error stored in `errno`. + * If `error_code` is non-negative (an `errno` value`), that + * value will be stored in `errno` and `perror` will be + * used to print it. Additionally, if the `error_code` is + * the value of `LIBGAMMA_DEVICE_REQUIRE_GROUP` the + * required group will be printed with its numerical value + * and, if known, its name. + * + * @param name The text to add at the beginning. + * @param value The error code, may be an `errno` value. + */ + void perror(const std::string name, int error_code) + { + libgamma_perror(name.c_str(), error_code); + } + + /** + * Returns the name of the definition associated with a `nullptr` error code. + * + * @param value The error code. + * @return The name of the definition associated with the error code, + * `nullptr` if the error code does not exist. + */ + std::string* name_of_error(int value) + { + const char* cstr = libgamma_name_of_error(value); + if (cstr == nullptr) + return nullptr; + return new std::string(cstr); + } + + /** + * Return the value of a `libgamma` error definition refered to by name. + * + * @param name The name of the definition associated with the error code. + * @return The error code, zero if the name is `nullptr` + * or does not refer to a `libgamma` error. + */ + int value_of_error(const std::string* name) + { + const char* cstr = nullptr; + if (name != nullptr) + cstr = name->c_str(); + return libgamma_value_of_error(cstr); + } + +} + -- cgit v1.2.3-70-g09d2