diff options
| -rw-r--r-- | src/libgamma-error.cc | 77 | ||||
| -rw-r--r-- | src/libgamma-error.hh | 78 | ||||
| -rw-r--r-- | src/libgamma.hh | 26 | ||||
| -rw-r--r-- | src/test.cc | 44 |
4 files changed, 225 insertions, 0 deletions
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 <http://www.gnu.org/licenses/>. + */ +#include "libgamma-error.hh" +#include <iostream> + + +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); + } + +} + diff --git a/src/libgamma-error.hh b/src/libgamma-error.hh new file mode 100644 index 0000000..e4c8f4c --- /dev/null +++ b/src/libgamma-error.hh @@ -0,0 +1,78 @@ +/** + * 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 <http://www.gnu.org/licenses/>. + */ +#ifndef LIBGAMMA_ERROR_HH +#define LIBGAMMA_ERROR_HH + + +#include <string> + +extern "C" +{ +# include <libgamma-config.h> +# include <libgamma-error.h> +} + + +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); + + /** + * 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); + + /** + * 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); + + + /* TODO libgamma_group_gid */ + /* TODO libgamma_group_name */ + +} + + +#endif + diff --git a/src/libgamma.hh b/src/libgamma.hh new file mode 100644 index 0000000..bd237f0 --- /dev/null +++ b/src/libgamma.hh @@ -0,0 +1,26 @@ +/** + * 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 <http://www.gnu.org/licenses/>. + */ +#ifndef LIBGAMMA_HH +#define LIBGAMMA_HH + + +#include "libgamma-error.hh" + + +#endif + diff --git a/src/test.cc b/src/test.cc new file mode 100644 index 0000000..b09017e --- /dev/null +++ b/src/test.cc @@ -0,0 +1,44 @@ +/** + * 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 <http://www.gnu.org/licenses/>. + */ +#include "libgamma.hh" + +#include <iostream> + + +int main(void) +{ + std::string* str; + + libgamma::perror("test", 0); + libgamma::perror("test", 2); + libgamma::perror("test", -2); + libgamma::perror("test", LIBGAMMA_ERRNO_SET); + std::cout << std::endl; + + str = libgamma::name_of_error(-2); + std::cout << *str << std::endl; + std::cout << libgamma::value_of_error(str) << std::endl; + delete str; + str = new std::string("LIBGAMMA_NO_SUCH_ADJUSTMENT_METHOD"); + std::cout << libgamma::value_of_error(str) << std::endl; + delete str; + std::cout << std::endl; + + return 0; +} + |