open source
This commit is contained in:
lvfulong
@@ -0,0 +1,598 @@
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/**
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@file JCFileSystem.h
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@brief
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@author James
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@version 1.0
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@date 2016_5_11
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*/
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#ifndef __JCFileSystem_H__
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#define __JCFileSystem_H__
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#include "../buffer/JCBuffer.h"
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#ifdef WIN32
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#include <filesystem>
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namespace fs = std::experimental::filesystem::v1;
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#else
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#include <string>
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#include <ctime>
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#include <cerrno>
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#include <cassert>
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#include <system_error>
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#endif
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namespace laya
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{
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/** @brief 同步读取本地文件
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* @param[in] 文件名字
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* @param[out] 返回的buffer
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* @param[in] Encode是表示文件内容的原本的编码方式。即用这种编码方式去解释内容
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* @return 是否读取成功
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*/
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bool readFileSync(const char* p_pszFile, JCBuffer& p_buf, int p_nEncode = JCBuffer::raw);
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/** @brief 同步读取本地文件
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* @param[in] 文件名字
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* @param[in] Encode是表示文件内容的原本的编码方式。即用这种编码方式去解释内容
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* @return 返回字符串
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*/
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std::string readFileSync1(const char* p_pszFile, const char* p_pszEncode);
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/** @brief 同步写本地文件
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* @param[in] 文件名字
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* @param[in] 返回的buffer
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* @param[in] Encode是要把文件保存成什么的编码方式
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* @return 是否写入成功
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*/
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bool writeFileSync(const char* p_pszFile, JCBuffer& p_buf, int p_nEncode = JCBuffer::raw);
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/** @brief 写本地文件
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* @param[in] 文件名
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* @param[in] 写入的buffer
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* @param[in] 长度
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* @param[in] encodetype
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* @return 是否写入成功
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*/
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bool writeFileSync1(const char* p_pszFile, char* p_pBuff, int p_nLen, int p_nEncode = JCBuffer::raw);
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typedef void(*GLOBAL_ONCREATEFILEERROR)();
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extern GLOBAL_ONCREATEFILEERROR global_onCreateFileError;
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}
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#ifdef WIN32
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#else // __APPLE__ANDROID
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namespace fs
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{
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#define FILESYSTEM_BITMASK(Bitmask) \
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\
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inline Bitmask operator| (Bitmask x , Bitmask y ) \
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{ return static_cast<Bitmask>( static_cast<std::int_least32_t>(x) \
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| static_cast<std::int_least32_t>(y)); } \
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\
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inline Bitmask operator& (Bitmask x , Bitmask y ) \
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{ return static_cast<Bitmask>( static_cast<std::int_least32_t>(x) \
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& static_cast<std::int_least32_t>(y)); } \
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\
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inline Bitmask operator^ (Bitmask x , Bitmask y ) \
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{ return static_cast<Bitmask>( static_cast<std::int_least32_t>(x) \
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^ static_cast<std::int_least32_t>(y)); } \
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\
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inline Bitmask operator~ (Bitmask x ) \
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{ return static_cast<Bitmask>(~static_cast<std::int_least32_t>(x)); } \
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\
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inline Bitmask & operator&=(Bitmask & x , Bitmask y) \
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{ x = x & y ; return x ; } \
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\
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inline Bitmask & operator|=(Bitmask & x , Bitmask y) \
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{ x = x | y ; return x ; } \
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\
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inline Bitmask & operator^=(Bitmask & x , Bitmask y) \
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{ x = x ^ y ; return x ; }
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enum file_type
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{
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status_error,
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# ifndef BOOST_FILESYSTEM_NO_DEPRECATED
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status_unknown = status_error,
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# endif
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file_not_found,
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regular_file,
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directory_file,
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// the following may not apply to some operating systems or file systems
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symlink_file,
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block_file,
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character_file,
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fifo_file,
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socket_file,
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reparse_file, // Windows: FILE_ATTRIBUTE_REPARSE_POINT that is not a symlink
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type_unknown, // file does exist, but isn't one of the above types or
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// we don't have strong enough permission to find its type
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_detail_directory_symlink // internal use only; never exposed to users
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};
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enum perms
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{
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no_perms = 0, // file_not_found is no_perms rather than perms_not_known
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// POSIX equivalent macros given in comments.
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// Values are from POSIX and are given in octal per the POSIX standard.
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// permission bits
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owner_read = 0400, // S_IRUSR, Read permission, owner
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owner_write = 0200, // S_IWUSR, Write permission, owner
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owner_exe = 0100, // S_IXUSR, Executearch permission, owner
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owner_all = 0700, // S_IRWXU, Read, write, executearch by owner
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group_read = 040, // S_IRGRP, Read permission, group
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group_write = 020, // S_IWGRP, Write permission, group
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group_exe = 010, // S_IXGRP, Executearch permission, group
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group_all = 070, // S_IRWXG, Read, write, executearch by group
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others_read = 04, // S_IROTH, Read permission, others
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others_write = 02, // S_IWOTH, Write permission, others
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others_exe = 01, // S_IXOTH, Executearch permission, others
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others_all = 07, // S_IRWXO, Read, write, executearch by others
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all_all = 0777, // owner_all|group_all|others_all
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// other POSIX bits
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set_uid_on_exe = 04000, // S_ISUID, Set-user-ID on execution
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set_gid_on_exe = 02000, // S_ISGID, Set-group-ID on execution
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sticky_bit = 01000, // S_ISVTX,
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// (POSIX XSI) On directories, restricted deletion flag
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// (V7) 'sticky bit': save swapped text even after use
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// (SunOS) On non-directories: don't cache this file
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// (SVID-v4.2) On directories: restricted deletion flag
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// Also see http://en.wikipedia.org/wiki/Sticky_bit
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perms_mask = 07777, // all_all|set_uid_on_exe|set_gid_on_exe|sticky_bit
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perms_not_known = 0xFFFF, // present when directory_entry cache not loaded
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// options for permissions() function
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add_perms = 0x1000, // adds the given permission bits to the current bits
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remove_perms = 0x2000, // removes the given permission bits from the current bits;
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// choose add_perms or remove_perms, not both; if neither add_perms
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// nor remove_perms is given, replace the current bits with
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// the given bits.
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symlink_perms = 0x4000 // on POSIX, don't resolve symlinks; implied on Windows
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};
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FILESYSTEM_BITMASK(perms)
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class file_status
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{
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public:
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file_status()
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: m_value(status_error), m_perms(perms_not_known) {}
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explicit file_status(file_type v)
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: m_value(v), m_perms(perms_not_known) {}
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file_status(file_type v, perms prms)
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: m_value(v), m_perms(prms) {}
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// As of October 2015 the interaction between noexcept and =default is so troublesome
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// for VC++, GCC, and probably other compilers, that =default is not used with noexcept
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// functions. GCC is not even consistent for the same release on different platforms.
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file_status(const file_status& rhs)
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: m_value(rhs.m_value), m_perms(rhs.m_perms) {}
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file_status& operator=(const file_status& rhs)
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{
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m_value = rhs.m_value;
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m_perms = rhs.m_perms;
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return *this;
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}
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// observers
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file_type type() const { return m_value; }
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perms permissions() const { return m_perms; }
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// modifiers
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void type(file_type v) { m_value = v; }
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void permissions(perms prms) { m_perms = prms; }
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bool operator==(const file_status& rhs) const
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{
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return type() == rhs.type() &&
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permissions() == rhs.permissions();
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}
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bool operator!=(const file_status& rhs) const
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{
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return !(*this == rhs);
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}
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private:
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file_type m_value;
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enum perms m_perms;
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};
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class filesystem_error
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{
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public:
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filesystem_error(const std::string & what_arg)
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{
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}
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const char* what()
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{
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return m_what.c_str();
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}
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private:
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mutable std::string m_what;
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};
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class path
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{
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public:
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typedef char value_type;
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static const value_type separator = '/';
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static const value_type preferred_separator = '/';
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static const value_type dot = '.';
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typedef std::basic_string<value_type> string_type;
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path() {}
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path(const path& p) : m_pathname(p.m_pathname) {}
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path(const value_type* s) : m_pathname(s) {}
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path(value_type* s) : m_pathname(s) {}
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path(const string_type& s) : m_pathname(s) {}
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path(string_type& s) : m_pathname(s) {}
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path& remove_filename();
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path filename() const;
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void clear() { m_pathname.clear(); }
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const value_type* c_str() const { return m_pathname.c_str(); }
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const std::string& generic_string() const { return m_pathname; }
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path& operator=(const path& p)
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{
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m_pathname = p.m_pathname;
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return *this;
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}
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// value_type overloads
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path& operator=(const value_type* ptr) // required in case ptr overlaps *this
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{
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m_pathname = ptr; return *this;
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}
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path& operator=(value_type* ptr) // required in case ptr overlaps *this
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{
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m_pathname = ptr; return *this;
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}
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path& operator=(const string_type& s) { m_pathname = s; return *this; }
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path& operator=(string_type& s) { m_pathname = s; return *this; }
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// value_type overloads. Same rationale as for constructors above
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path& operator+=(const path& p) { m_pathname += p.m_pathname; return *this; }
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path& operator+=(const value_type* ptr) { m_pathname += ptr; return *this; }
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path& operator+=(value_type* ptr) { m_pathname += ptr; return *this; }
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path& operator+=(const string_type& s) { m_pathname += s; return *this; }
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path& operator+=(string_type& s) { m_pathname += s; return *this; }
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path& operator+=(value_type c) { m_pathname += c; return *this; }
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path& operator/=(const path& p);
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path& operator/=(const value_type* ptr);
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path& operator/=(value_type* ptr)
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{
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return this->operator/=(const_cast<const value_type*>(ptr));
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}
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path& operator/=(const string_type& s) { return this->operator/=(path(s)); }
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path& operator/=(string_type& s) { return this->operator/=(path(s)); }
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bool empty() const { return m_pathname.empty(); }
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string_type::size_type m_append_separator_if_needed();
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bool filename_is_dot() const;
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bool filename_is_dot_dot() const;
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string_type::size_type size() const { return m_pathname.size(); }
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path parent_path() const;
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private:
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string_type m_pathname;
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string_type::size_type m_parent_path_end() const;
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};
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/*inline bool operator==(const path& lhs, const path& rhs) {return lhs.compare(rhs) == 0;}
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inline bool operator==(const path& lhs, const path::string_type& rhs) {return lhs.compare(rhs) == 0;}
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inline bool operator==(const path::string_type& lhs, const path& rhs) {return rhs.compare(lhs) == 0;}
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inline bool operator==(const path& lhs, const path::value_type* rhs) {return lhs.compare(rhs) == 0;}
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inline bool operator==(const path::value_type* lhs, const path& rhs) {return rhs.compare(lhs) == 0;}
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inline bool operator!=(const path& lhs, const path& rhs) {return lhs.compare(rhs) != 0;}
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inline bool operator!=(const path& lhs, const path::string_type& rhs) {return lhs.compare(rhs) != 0;}
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inline bool operator!=(const path::string_type& lhs, const path& rhs) {return rhs.compare(lhs) != 0;}
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inline bool operator!=(const path& lhs, const path::value_type* rhs) {return lhs.compare(rhs) != 0;}
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inline bool operator!=(const path::value_type* lhs, const path& rhs) {return rhs.compare(lhs) != 0;}
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// TODO: why do == and != have additional overloads, but the others don't?
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inline bool operator<(const path& lhs, const path& rhs) {return lhs.compare(rhs) < 0;}
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inline bool operator<=(const path& lhs, const path& rhs) {return !(rhs < lhs);}
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inline bool operator> (const path& lhs, const path& rhs) {return rhs < lhs;}
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inline bool operator>=(const path& lhs, const path& rhs) {return !(lhs < rhs);}*/
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namespace detail
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{
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inline bool is_element_separator(path::value_type c)
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{
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return c == path::separator;
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}
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}
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inline path operator/(const path& lhs, const path& rhs) { return path(lhs) /= rhs; }
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inline bool is_directory_separator(path::value_type c)
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{
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return c == path::separator;
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}
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file_status status(const path&p, std::error_code* ec = 0);
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inline bool exists(file_status f)
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{
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return f.type() != status_error
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&& f.type() != file_not_found;
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}
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inline bool exists(const path& p) { return exists(status(p)); }
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inline bool is_regular_file(file_status f)
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{
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return f.type() == regular_file;
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}
|
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inline bool is_directory(file_status f)
|
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{
|
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return f.type() == directory_file;
|
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}
|
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inline bool is_directory(const path& p) { return is_directory(status(p)); }
|
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inline bool is_regular_file(const path& p) { return is_regular_file(status(p)); }
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bool create_directories(const path& p, std::error_code* ec = 0);
|
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bool remove(const path& p, std::error_code* ec = 0);
|
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std::time_t last_write_time(const path& p, std::error_code* ec = 0);
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std::uintmax_t file_size(const path& p, std::error_code* ec = 0);
|
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std::uintmax_t remove_all(const path& p, std::error_code* ec = 0);
|
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inline bool path::filename_is_dot() const
|
||||
{
|
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// implicit dot is tricky, so actually call filename(); see path::filename() example
|
||||
// in reference.html
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||||
path p(filename());
|
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return p.size() == 1 && *p.c_str() == dot;
|
||||
}
|
||||
|
||||
inline bool path::filename_is_dot_dot() const
|
||||
{
|
||||
return size() >= 2 && m_pathname[size() - 1] == dot && m_pathname[size() - 2] == dot
|
||||
&& (m_pathname.size() == 2 || detail::is_element_separator(m_pathname[size() - 3]));
|
||||
// use detail::is_element_separator() rather than detail::is_directory_separator
|
||||
// to deal with "c:.." edge case on Windows when ':' acts as a separator
|
||||
}
|
||||
//--------------------------------------------------------------------------------------//
|
||||
// //
|
||||
// directory_entry //
|
||||
// //
|
||||
//--------------------------------------------------------------------------------------//
|
||||
|
||||
// GCC has a problem with a member function named path within a namespace or
|
||||
// sub-namespace that also has a class named path. The workaround is to always
|
||||
// fully qualify the name path when it refers to the class name.
|
||||
|
||||
class directory_entry
|
||||
{
|
||||
public:
|
||||
typedef fs::path::value_type value_type; // enables class path ctor taking directory_entry
|
||||
|
||||
directory_entry() {}
|
||||
explicit directory_entry(const fs::path& p)
|
||||
: m_path(p), m_status(file_status()), m_symlink_status(file_status())
|
||||
{}
|
||||
directory_entry(const fs::path& p,
|
||||
file_status st, file_status symlink_st = file_status())
|
||||
: m_path(p), m_status(st), m_symlink_status(symlink_st) {}
|
||||
|
||||
directory_entry(const directory_entry& rhs)
|
||||
: m_path(rhs.m_path), m_status(rhs.m_status), m_symlink_status(rhs.m_symlink_status) {}
|
||||
|
||||
directory_entry& operator=(const directory_entry& rhs)
|
||||
{
|
||||
m_path = rhs.m_path;
|
||||
m_status = rhs.m_status;
|
||||
m_symlink_status = rhs.m_symlink_status;
|
||||
return *this;
|
||||
}
|
||||
// As of October 2015 the interaction between noexcept and =default is so troublesome
|
||||
// for VC++, GCC, and probably other compilers, that =default is not used with noexcept
|
||||
// functions. GCC is not even consistent for the same release on different platforms.
|
||||
|
||||
/*#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
|
||||
directory_entry(directory_entry&& rhs)
|
||||
{
|
||||
m_path = std::move(rhs.m_path);
|
||||
m_status = std::move(rhs.m_status);
|
||||
m_symlink_status = std::move(rhs.m_symlink_status);
|
||||
}
|
||||
directory_entry& operator=(directory_entry&& rhs)
|
||||
{
|
||||
m_path = std::move(rhs.m_path);
|
||||
m_status = std::move(rhs.m_status);
|
||||
m_symlink_status = std::move(rhs.m_symlink_status);
|
||||
return *this;
|
||||
}
|
||||
#endif*/
|
||||
|
||||
void assign(const fs::path& p,file_status st = file_status(), file_status symlink_st = file_status())
|
||||
{
|
||||
m_path = p; m_status = st; m_symlink_status = symlink_st;
|
||||
}
|
||||
|
||||
void replace_filename(const fs::path& p,file_status st = file_status(), file_status symlink_st = file_status())
|
||||
{
|
||||
m_path.remove_filename();
|
||||
m_path /= p;
|
||||
m_status = st;
|
||||
m_symlink_status = symlink_st;
|
||||
}
|
||||
|
||||
# ifndef BOOST_FILESYSTEM_NO_DEPRECATED
|
||||
void replace_leaf(const fs::path& p,file_status st, file_status symlink_st)
|
||||
{
|
||||
replace_filename(p, st, symlink_st);
|
||||
}
|
||||
# endif
|
||||
|
||||
const fs::path& path() const { return m_path; }
|
||||
operator const fs::path&() const { return m_path; }
|
||||
file_status status() const { return m_get_status(); }
|
||||
file_status status(std::error_code& ec) const
|
||||
{
|
||||
return m_get_status(&ec);
|
||||
}
|
||||
file_status symlink_status() const { return m_get_symlink_status(); }
|
||||
file_status symlink_status(std::error_code& ec) const
|
||||
{
|
||||
return m_get_symlink_status(&ec);
|
||||
}
|
||||
|
||||
/*bool operator==(const directory_entry& rhs) const {return m_path == rhs.m_path; }
|
||||
bool operator!=(const directory_entry& rhs) const {return m_path != rhs.m_path;}
|
||||
bool operator< (const directory_entry& rhs) const {return m_path < rhs.m_path;}
|
||||
bool operator<=(const directory_entry& rhs) const {return m_path <= rhs.m_path;}
|
||||
bool operator> (const directory_entry& rhs) const {return m_path > rhs.m_path;}
|
||||
bool operator>=(const directory_entry& rhs) const {return m_path >= rhs.m_path;}*/
|
||||
|
||||
private:
|
||||
fs::path m_path;
|
||||
mutable file_status m_status; // stat()-like
|
||||
mutable file_status m_symlink_status; // lstat()-like
|
||||
|
||||
file_status m_get_status(std::error_code* ec = 0) const;
|
||||
file_status m_get_symlink_status(std::error_code* ec = 0) const;
|
||||
};
|
||||
// directory_entry
|
||||
//--------------------------------------------------------------------------------------//
|
||||
// //
|
||||
// directory_iterator helpers //
|
||||
// //
|
||||
//--------------------------------------------------------------------------------------//
|
||||
class directory_iterator;
|
||||
|
||||
namespace detail
|
||||
{
|
||||
|
||||
std::error_code dir_itr_close(void *& handle, void *& buffer);
|
||||
|
||||
struct dir_itr_imp
|
||||
{
|
||||
directory_entry dir_entry;
|
||||
void* handle;
|
||||
void* buffer; // see dir_itr_increment implementation
|
||||
dir_itr_imp() : handle(0), buffer(0)
|
||||
{}
|
||||
|
||||
~dir_itr_imp() // never throws
|
||||
{
|
||||
dir_itr_close(handle, buffer);
|
||||
}
|
||||
};
|
||||
|
||||
// see path::iterator: comment below
|
||||
void directory_iterator_construct(directory_iterator& it,
|
||||
const path& p, std::error_code* ec);
|
||||
void directory_iterator_increment(directory_iterator& it,
|
||||
std::error_code* ec);
|
||||
|
||||
} // namespace detail
|
||||
//--------------------------------------------------------------------------------------//
|
||||
// //
|
||||
// directory_iterator //
|
||||
// //
|
||||
//--------------------------------------------------------------------------------------//
|
||||
|
||||
class directory_iterator
|
||||
{
|
||||
public:
|
||||
|
||||
directory_iterator() {} // creates the "end" iterator
|
||||
|
||||
// iterator_facade derived classes don't seem to like implementations in
|
||||
// separate translation unit dll's, so forward to detail functions
|
||||
explicit directory_iterator(const path& p)
|
||||
: m_imp(new detail::dir_itr_imp)
|
||||
{
|
||||
detail::directory_iterator_construct(*this, p, 0);
|
||||
}
|
||||
directory_iterator(const path& p, std::error_code& ec)
|
||||
: m_imp(new detail::dir_itr_imp)
|
||||
{
|
||||
detail::directory_iterator_construct(*this, p, &ec);
|
||||
}
|
||||
|
||||
~directory_iterator() {}
|
||||
directory_iterator& increment(std::error_code& ec)
|
||||
{
|
||||
detail::directory_iterator_increment(*this, &ec);
|
||||
return *this;
|
||||
}
|
||||
const directory_entry& operator*() const
|
||||
{
|
||||
return this->dereference();
|
||||
}
|
||||
const directory_entry * operator->() const
|
||||
{
|
||||
return std::addressof(this->dereference());
|
||||
}
|
||||
|
||||
directory_iterator & operator++()
|
||||
{
|
||||
this->increment();
|
||||
return *this;
|
||||
}
|
||||
|
||||
directory_iterator operator++(int)
|
||||
{
|
||||
directory_iterator temp = *this;
|
||||
this->operator++();
|
||||
return temp;
|
||||
}
|
||||
|
||||
bool operator==(directory_iterator const& r)
|
||||
{
|
||||
return this->equal(r);
|
||||
}
|
||||
bool operator!=(directory_iterator const& r)
|
||||
{
|
||||
return !this->equal(r);
|
||||
}
|
||||
private:
|
||||
friend struct detail::dir_itr_imp;
|
||||
friend void detail::directory_iterator_construct(directory_iterator& it,
|
||||
const path& p, std::error_code* ec);
|
||||
friend void detail::directory_iterator_increment(directory_iterator& it,
|
||||
std::error_code* ec);
|
||||
|
||||
// shared_ptr provides the shallow-copy semantics required for single pass iterators
|
||||
// (i.e. InputIterators). The end iterator is indicated by !m_imp || !m_imp->handle
|
||||
std::shared_ptr< detail::dir_itr_imp > m_imp;
|
||||
|
||||
//friend class boost::iterator_core_access;
|
||||
|
||||
const directory_entry& dereference() const
|
||||
{
|
||||
assert(m_imp.get() && "attempt to dereference end iterator");
|
||||
return m_imp->dir_entry;
|
||||
}
|
||||
|
||||
void increment() { detail::directory_iterator_increment(*this, 0); }
|
||||
|
||||
bool equal(const directory_iterator& rhs) const
|
||||
{
|
||||
return m_imp == rhs.m_imp
|
||||
|| (!m_imp && rhs.m_imp && !rhs.m_imp->handle)
|
||||
|| (!rhs.m_imp && m_imp && !m_imp->handle);
|
||||
}
|
||||
|
||||
}; // directory_iterator
|
||||
}
|
||||
#endif
|
||||
//------------------------------------------------------------------------------
|
||||
|
||||
|
||||
#endif //__JCFileSystem_H__
|
||||
|
||||
//-----------------------------END FILE--------------------------------
|
||||
Reference in New Issue
Block a user