Merge branch 'remove-strerror' into 'master'

Remove strerror usages

Closes #7151

See merge request OpenMW/openmw!2664

apps/esmtool/esmtool.cpp

@@ -439,7 +439,8 @@ namespace
         auto stream = Files::openBinaryInputFileStream(info.filename);
         if (!stream->is_open())
         {
-            std::cout << "Failed to open file: " << std::strerror(errno) << '\n';
+            std::cout << "Failed to open file " << info.filename << ": " << std::generic_category().message(errno)
+                      << '\n';
             return -1;
         }
 

apps/wizard/unshield/unshieldworker.cpp

@@ -177,7 +177,7 @@ bool Wizard::UnshieldWorker::setupSettings()
     if (file.fail())
     {
         emit error(tr("Failed to open Morrowind configuration file!"),
-            tr("Opening %1 failed: %2.").arg(getIniPath(), strerror(errno)));
+            tr("Opening %1 failed: %2.").arg(getIniPath(), std::generic_category().message(errno).c_str()));
         return false;
     }
 
@@ -196,14 +196,14 @@ bool Wizard::UnshieldWorker::writeSettings()
     if (file.fail())
     {
         emit error(tr("Failed to open Morrowind configuration file!"),
-            tr("Opening %1 failed: %2.").arg(getIniPath(), strerror(errno)));
+            tr("Opening %1 failed: %2.").arg(getIniPath(), std::generic_category().message(errno).c_str()));
         return false;
     }
 
     if (!mIniSettings.writeFile(getIniPath(), file, mIniEncoding))
     {
         emit error(tr("Failed to write Morrowind configuration file!"),
-            tr("Writing to %1 failed: %2.").arg(getIniPath(), strerror(errno)));
+            tr("Writing to %1 failed: %2.").arg(getIniPath(), std::generic_category().message(errno).c_str()));
         return false;
     }
 

components/crashcatcher/crashcatcher.cpp

@@ -176,7 +176,8 @@ static void gdb_info(pid_t pid)
 
         /* Clean up */
         if (remove(respfile) != 0)
-            Log(Debug::Warning) << "Warning: can not remove file '" << respfile << "': " << std::strerror(errno);
+            Log(Debug::Warning) << "Warning: can not remove file '" << respfile
+                                << "': " << std::generic_category().message(errno);
     }
     else
     {
@@ -184,9 +185,11 @@ static void gdb_info(pid_t pid)
         if (fd >= 0)
         {
             if (close(fd) != 0)
-                Log(Debug::Warning) << "Warning: can not close file '" << respfile << "': " << std::strerror(errno);
+                Log(Debug::Warning) << "Warning: can not close file '" << respfile
+                                    << "': " << std::generic_category().message(errno);
             else if (remove(respfile) != 0)
-                Log(Debug::Warning) << "Warning: can not remove file '" << respfile << "': " << std::strerror(errno);
+                Log(Debug::Warning) << "Warning: can not remove file '" << respfile
+                                    << "': " << std::generic_category().message(errno);
         }
         printf("!!! Could not create gdb command file\n");
     }

components/files/linuxpath.cpp

@@ -56,7 +56,8 @@ namespace Files
         const auto err = ec.value();
         if (err != 0)
         {
-            Log(Debug::Warning) << "Error " << err << " " << std::strerror(err) << " when changing current directory";
+            Log(Debug::Warning) << "Error " << err << " " << std::generic_category().message(errno)
+                                << " when changing current directory";
         }
     }
 

components/files/openfile.cpp

@@ -10,8 +10,8 @@ namespace Files
     {
         auto stream = std::make_unique<std::ifstream>(path, std::ios::binary);
         if (!stream->is_open())
-            throw std::runtime_error(
-                "Failed to open '" + Files::pathToUnicodeString(path) + "' for reading: " + std::strerror(errno));
+            throw std::system_error(errno, std::generic_category(),
+                "Failed to open '" + Files::pathToUnicodeString(path) + "' for reading");
         stream->exceptions(std::ios::badbit);
         return stream;
     }

components/misc/strings/format.hpp

@@ -7,6 +7,7 @@
 #include <stdexcept>
 #include <string>
 #include <string_view>
+#include <system_error>
 #include <vector>
 
 namespace Misc::StringUtils
@@ -50,12 +51,11 @@ namespace Misc::StringUtils
         {
             const int size = std::snprintf(nullptr, 0, fmt, argument(args)...);
             if (size < 0)
-                throw std::runtime_error(
-                    std::string("Failed to compute resulting string size: ") + std::strerror(errno));
+                throw std::system_error(errno, std::generic_category(), "Failed to compute resulting string size");
             // Note: sprintf also writes a trailing null character. We should remove it.
             std::string ret(static_cast<std::size_t>(size) + 1, '\0');
             if (std::sprintf(ret.data(), fmt, argument(args)...) < 0)
-                throw std::runtime_error(std::string("Failed to format string: ") + std::strerror(errno));
+                throw std::system_error(errno, std::generic_category(), "Failed to format string");
             ret.erase(static_cast<std::size_t>(size));
             return ret;
         }

components/misc/thread.cpp

@@ -20,7 +20,7 @@ namespace Misc
             Log(Debug::Verbose) << "Using idle priority for thread=" << std::this_thread::get_id();
         else
             Log(Debug::Warning) << "Failed to set idle priority for thread=" << std::this_thread::get_id() << ": "
-                                << std::strerror(errno);
+                                << std::generic_category().message(errno);
     }
 }
 
@@ -56,7 +56,7 @@ namespace Misc
             Log(Debug::Verbose) << "Using idle priority for thread=" << std::this_thread::get_id();
         else
             Log(Debug::Warning) << "Failed to set idle priority for thread=" << std::this_thread::get_id() << ": "
-                                << std::strerror(errno);
+                                << std::generic_category().message(errno);
     }
 }
 

components/platform/file.posix.cpp

@@ -43,8 +43,8 @@ namespace Platform::File
         auto handle = ::open(filename.c_str(), openFlags, 0);
         if (handle == -1)
         {
-            throw std::runtime_error(std::string("Failed to open '") + Files::pathToUnicodeString(filename)
-                + "' for reading: " + strerror(errno));
+            throw std::system_error(errno, std::generic_category(),
+                std::string("Failed to open '") + Files::pathToUnicodeString(filename) + "' for reading");
         }
         return static_cast<Handle>(handle);
     }
@@ -63,7 +63,7 @@ namespace Platform::File
 
         if (::lseek(nativeHandle, position, nativeSeekType) == -1)
         {
-            throw std::runtime_error("An lseek() call failed: " + std::string(strerror(errno)));
+            throw std::system_error(errno, std::generic_category(), "An lseek() call failed");
         }
     }
 
@@ -85,7 +85,7 @@ namespace Platform::File
         size_t position = ::lseek(nativeHandle, 0, SEEK_CUR);
         if (position == size_t(-1))
         {
-            throw std::runtime_error("An lseek() call failed: " + std::string(strerror(errno)));
+            throw std::system_error(errno, std::generic_category(), "An lseek() call failed");
         }
         return position;
     }
@@ -97,8 +97,8 @@ namespace Platform::File
         int amount = ::read(nativeHandle, data, size);
         if (amount == -1)
         {
-            throw std::runtime_error(
-                "An attempt to read " + std::to_string(size) + " bytes failed: " + strerror(errno));
+            throw std::system_error(
+                errno, std::generic_category(), "An attempt to read " + std::to_string(size) + " bytes failed");
         }
         return amount;
     }

components/platform/file.stdio.cpp

@@ -34,8 +34,8 @@ namespace Platform::File
         FILE* handle = fopen(filename.c_str(), "rb");
         if (handle == nullptr)
         {
-            throw std::runtime_error(std::string("Failed to open '") + Files::pathToUnicodeString(filename)
-                + "' for reading: " + strerror(errno));
+            throw std::system_error(errno, std::generic_category(),
+                std::string("Failed to open '") + Files::pathToUnicodeString(filename) + "' for reading");
         }
         return static_cast<Handle>(reinterpret_cast<intptr_t>(handle));
     }
@@ -52,7 +52,7 @@ namespace Platform::File
         const auto nativeSeekType = getNativeSeekType(type);
         if (fseek(nativeHandle, position, nativeSeekType) != 0)
         {
-            throw std::runtime_error(std::string("An fseek() call failed: ") + strerror(errno));
+            throw std::system_error(errno, std::generic_category(), std::string("An fseek() call failed"));
         }
     }
 
@@ -75,7 +75,7 @@ namespace Platform::File
         long position = ftell(nativeHandle);
         if (position == -1)
         {
-            throw std::runtime_error(std::string("An ftell() call failed: ") + strerror(errno));
+            throw std::system_error(errno, std::generic_category(), std::string("An ftell() call failed"));
         }
         return static_cast<size_t>(position);
     }
@@ -87,8 +87,8 @@ namespace Platform::File
         int amount = fread(data, 1, size, nativeHandle);
         if (amount == 0 && ferror(nativeHandle))
         {
-            throw std::runtime_error(
-                std::string("An attempt to read ") + std::to_string(size) + " bytes failed: " + strerror(errno));
+            throw std::system_error(errno, std::generic_category(),
+                std::string("An attempt to read ") + std::to_string(size) + " bytes failed");
         }
         return static_cast<size_t>(amount);
     }