ObjFW  Artifact [0c8db08aa1]

Artifact 0c8db08aa1f0a28d9e4d2f01e15a223a45eb5dc531e2b5e303fe1e643a5981fc:

• File src/OFSystemInfo.h — part of check-in [6dff0f5922] at 2017-01-07 02:34:39 on branch trunk — Always use "." for the decimal point

  This is achieved by replacing the locale's decimal point with "." after
  formatting and replacing "." with the locale's decimal point before
  parsing.

  To still use the decimal point from the locale for formatting, the new
  flag "," is introduced to formats. This is useful for just printing a
  string to the user that is not saved to a file or sent via a network.

  While this is an ugly hack, there is no better way to do this other than
  implementing the functionality of printf and strtod myself, as POSIX
  does not specify versions of these that take a locale as an argument.
  While this is a lot of work and error-prone, I will most likely end up
  doing this eventually.

  This commit also enables the locale in OFApplication to notice when
  things break. As a nice side effect, ofhttp now uses the locale's
  decimal point in its user interface. (user: js, size: 5384) [annotate] [blame] [check-ins using]

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
 *   Jonathan Schleifer <js@heap.zone>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *
 * Alternatively, it may be distributed under the terms of the GNU General
 * Public License, either version 2 or 3, which can be found in the file
 * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
 * file.
 */

#import "OFObject.h"
#import "OFString.h"

OF_ASSUME_NONNULL_BEGIN

/*!
 * @class OFSystemInfo OFSystemInfo.h ObjFW/OFSystemInfo.h
 *
 * @brief A class for querying information about the system.
 */
@interface OFSystemInfo: OFObject
/*!
 * @brief Returns the size of a page.
 *
 * @return The size of a page
 */
+ (size_t)pageSize;

/*!
 * @brief Returns the number of CPUs installed in the system.
 *
 * A CPU with multiple cores counts as multiple CPUs.
 *
 * @return The number of CPUs installed in the system
 */
+ (size_t)numberOfCPUs;

/*!
 * @brief Returns the native 8-bit string encoding of the operating system.
 *
 * This is useful to encode strings correctly for passing them to operating
 * system calls.
 *
 * @return The native 8-bit string encoding of the operating system
 */
+ (of_string_encoding_t)native8BitEncoding;

/*!
 * @brief Returns the decimal point in the system's locale.
 *
 * @return The decimal point in the system's locale
 */
+ (OFString*)decimalPoint;

/*!
 * @brief Returns the path where user data for the application can be stored.
 *
 * On Unix systems, this adheres to the XDG Base Directory specification.@n
 * On Mac OS X and iOS, it uses the `NSApplicationSupportDirectory` directory.@n
 * On Windows, it uses the `APPDATA` environment variable.@n
 * On Haiku, it uses the `B_USER_SETTINGS_DIRECTORY` directory.
 *
 * @return The path where user data for the application can be stored
 */
+ (OFString*)userDataPath;

/*!
 * @brief Returns the path where user configuration for the application can be
 *	  stored.
 *
 * On Unix systems, this adheres to the XDG Base Directory specification.@n
 * On Mac OS X and iOS, it uses the `Preferences` directory inside of
 * `NSLibraryDirectory` directory.@n
 * On Windows, it uses the `APPDATA` environment variable.@n
 * On Haiku, it uses the `B_USER_SETTINGS_DIRECTORY` directory.
 *
 * @return The path where user configuration for the application can be stored
 */
+ (OFString*)userConfigPath;

/*!
 * @brief Returns the vendor of the CPU.
 *
 * If the vendor could not be determined, `nil` is returned instead.
 *
 * @return The vendor of the CPU
 */
+ (nullable OFString*)CPUVendor;

#if defined(OF_X86_64) || defined(OF_X86) || defined(DOXYGEN)
/*!
 * @brief Returns whether the CPU supports MMX.
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports MMX
 */
+ (bool)supportsMMX;

/*!
 * @brief Returns whether the CPU supports SSE.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports SSE
 */
+ (bool)supportsSSE;

/*!
 * @brief Returns whether the CPU supports SSE2.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports SSE2
 */
+ (bool)supportsSSE2;

/*!
 * @brief Returns whether the CPU supports SSE3.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports SSE3
 */
+ (bool)supportsSSE3;

/*!
 * @brief Returns whether the CPU supports SSSE3.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports SSSE3
 */
+ (bool)supportsSSSE3;

/*!
 * @brief Returns whether the CPU supports SSE4.1.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports SSE4.1
 */
+ (bool)supportsSSE41;

/*!
 * @brief Returns whether the CPU supports SSE4.2.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports SSE4.2
 */
+ (bool)supportsSSE42;

/*!
 * @brief Returns whether the CPU supports AVX.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports AVX
 */
+ (bool)supportsAVX;

/*!
 * @brief Returns whether the CPU supports AVX2.
 *
 * @warning This method only checks CPU support and assumes OS support!
 *
 * @note This method is only available on x86 and x86_64.
 *
 * @return Whether the CPU supports AVX2
 */
+ (bool)supportsAVX2;
#endif

#if defined(OF_POWERPC) || defined(OF_POWERPC64)
/*!
 * @brief Returns whether the CPU and OS support AltiVec.
 *
 * @note This method is only available on PowerPC and PowerPC64.
 *
 * @return Whether the CPU and OS support AltiVec
 */
+ (bool)supportsAltiVec;
#endif
@end

OF_ASSUME_NONNULL_END