mirror of https://github.com/ksherlock/mpw.git
c++11 error_code for mpw errno
This commit is contained in:
Kelvin Sherlock
parent
d826ef8c13
commit
2502c18862
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@ -4,7 +4,7 @@ set(CMAKE_CXX_FLAGS "-std=c++11 -stdlib=libc++ -Wall -g")
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add_definitions(-I ${CMAKE_SOURCE_DIR}/)
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set(MPW_SRC mpw.cpp mpw_io.cpp mpw_close.cpp mpw_access.cpp mpw_ioctl.cpp
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set(MPW_SRC mpw.cpp mpw_io.cpp mpw_close.cpp mpw_access.cpp mpw_ioctl.cpp mpw_errno.cpp
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environment.cpp)
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# add_custom_command(
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@ -0,0 +1,225 @@
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/*
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* Copyright (c) 2014, Kelvin W Sherlock
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <string>
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#include <system_error>
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#include <cerrno>
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#include "mpw_errno.h"
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namespace MPW {
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namespace {
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class __system_category : public std::error_category
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{
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public:
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virtual const char* name() const noexcept;
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virtual std::string message(int ev) const;
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virtual std::error_condition default_error_condition(int ev) const noexcept;
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private:
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static int remap(mpw_errno e);
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};
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const char *__system_category::name() const noexcept
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{
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return "mpw/errno";
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}
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std::string __system_category::message(int ev) const
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{
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switch (ev)
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{
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case kEPERM: return "Permission denied";
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case kENOENT: return "No such file or directory";
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case kENORSRC: return "No such resource";
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case kEINTR: return "Interrupted system service";
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case kEIO: return "I/O error";
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case kENXIO: return "No such device or address";
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case kE2BIG: return "Argument list too long";
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case kENOEXEC: return "Exec format error";
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case kEBADF: return "Bad file number";
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case kECHILD: return "No children processes";
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case kEAGAIN: return "Resource temporarily unavailable, try again later";
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case kENOMEM: return "Not enough space";
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case kEACCES: return "Permission denied";
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case kEFAULT: return "Bad address";
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case kENOTBLK: return "Block device required";
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case kEBUSY: return "Device or resource busy";
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case kEEXIST: return "File exists";
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case kEXDEV: return "Cross-device link";
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case kENODEV: return "No such device";
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case kENOTDIR: return "Not a directory";
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case kEISDIR: return "Is a directory";
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case kEINVAL: return "Invalid argument";
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case kENFILE: return "File table overflow";
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case kEMFILE: return "Too many open files";
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case kENOTTY: return "Not a character device";
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case kETXTBSY: return "Text file busy";
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case kEFBIG: return "File too large";
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case kENOSPC: return "No space left on device";
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case kESPIPE: return "Illegal seek";
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case kEROFS: return "Read only file system";
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case kEMLINK: return "Too many links";
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case kEPIPE: return "Broken pipe";
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case kEDOM: return "Math arg out of domain of func";
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case kERANGE: return "Math result not representable";
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}
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std::string tmp("Unknown error: ");
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tmp += std::to_string(ev);
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return tmp;
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}
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std::error_condition __system_category::default_error_condition(int ev) const noexcept
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{
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int x = remap(static_cast<mpw_errno>(ev));
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if (x >= 0) return std::error_condition(x, std::generic_category());
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return std::error_condition(ev, mpw_system_category());
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}
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int __system_category::remap(mpw_errno e)
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{
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switch(e)
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{
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case kEPERM: return EPERM;
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case kENOENT: return ENOENT;
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#ifdef ENORSRC
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case kENORSRC: return ENORSRC;
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#endif
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case kEINTR: return EINTR;
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case kEIO: return EIO;
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case kENXIO: return ENXIO;
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case kE2BIG: return E2BIG;
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case kENOEXEC: return ENOEXEC;
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case kEBADF: return EBADF;
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case kECHILD: return ECHILD;
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case kEAGAIN: return EAGAIN;
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case kENOMEM: return ENOMEM;
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case kEACCES: return EACCES;
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case kEFAULT: return EFAULT;
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case kENOTBLK: return ENOTBLK;
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case kEBUSY: return EBUSY;
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case kEEXIST: return EEXIST;
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case kEXDEV: return EXDEV;
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case kENODEV: return ENODEV;
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case kENOTDIR: return ENOTDIR;
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case kEISDIR: return EISDIR;
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case kEINVAL: return EINVAL;
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case kENFILE: return ENFILE;
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case kEMFILE: return EMFILE;
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case kENOTTY: return ENOTTY;
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case kETXTBSY: return ETXTBSY;
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case kEFBIG: return EFBIG;
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case kENOSPC: return ENOSPC;
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case kESPIPE: return ESPIPE;
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case kEROFS: return EROFS;
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case kEMLINK: return EMLINK;
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case kEPIPE: return EPIPE;
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case kEDOM: return EDOM;
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case kERANGE: return ERANGE;
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default: return -1;
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}
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}
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}
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const std::error_category& mpw_system_category()
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{
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static __system_category s;
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return s;
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}
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mpw_errno mpw_errno_from_errno()
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{
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return mpw_errno_from_errno(errno);
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}
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mpw_errno mpw_errno_from_errno(int error)
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{
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switch(error)
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{
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case 0: return static_cast<mpw_errno>(0);
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case EPERM: return kEPERM;
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case ENOENT: return kENOENT;
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#ifdef ENORSRC
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case ENORSRC: return kENORSRC;
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#endif
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case EINTR: return kEINTR;
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case EIO: return kEIO;
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case ENXIO: return kENXIO;
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case E2BIG: return kE2BIG;
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case ENOEXEC: return kENOEXEC;
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case EBADF: return kEBADF;
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case ECHILD: return kECHILD;
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case EAGAIN: return kEAGAIN;
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case ENOMEM: return kENOMEM;
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case EACCES: return kEACCES;
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case EFAULT: return kEFAULT;
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case ENOTBLK: return kENOTBLK;
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case EBUSY: return kEBUSY;
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case EEXIST: return kEEXIST;
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case EXDEV: return kEXDEV;
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case ENODEV: return kENODEV;
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case ENOTDIR: return kENOTDIR;
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case EISDIR: return kEISDIR;
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case EINVAL: return kEINVAL;
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case ENFILE: return kENFILE;
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case EMFILE: return kEMFILE;
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case ENOTTY: return kENOTTY;
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case ETXTBSY: return kETXTBSY;
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case EFBIG: return kEFBIG;
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case ENOSPC: return kENOSPC;
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case ESPIPE: return kESPIPE;
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case EROFS: return kEROFS;
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case EMLINK: return kEMLINK;
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case EPIPE: return kEPIPE;
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case EDOM: return kEDOM;
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case ERANGE: return kERANGE;
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default:
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return kEINVAL;
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}
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}
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}
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@ -1,10 +1,12 @@
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#ifndef __mpw_errno_h__
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#define __mpw_errno_h__
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#include <system_error>
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namespace MPW {
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// from MPW errno.h
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enum {
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enum mpw_errno {
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kEPERM = 1, /* Permission denied */
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kENOENT = 2, /* No such file or directory */
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kENORSRC = 3, /* No such resource */
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@ -41,6 +43,34 @@ namespace MPW {
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kERANGE = 34, /* Math result not representable */
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};
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mpw_errno mpw_errno_from_errno();
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mpw_errno mpw_errno_from_errno(int error);
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// c++11 error stuff
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const std::error_category& mpw_system_category();
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inline std::error_code make_error_code(mpw_errno e) noexcept
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{
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return std::error_code(static_cast<int>(e), mpw_system_category());
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}
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inline std::error_condition make_error_condition(mpw_errno e) noexcept
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{
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return std::error_condition(static_cast<int>(e), mpw_system_category());
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}
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}
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#endif
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namespace std {
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template<>
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struct is_error_code_enum<MPW::mpw_errno> : public true_type {};
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template<>
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struct is_error_condition_enum<MPW::mpw_errno> : public true_type {};
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}
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#endif
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