mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-25 18:05:12 -04:00
Matthew Stanley
43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
#pragma once
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#include <filesystem>
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#include <string>
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#include <sstream>
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#include <cwchar>
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#if defined(_WIN32)
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#include <windows.h>
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#else
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#include <sys/stat.h>
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#endif
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namespace PSXRecompV4 {
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// A failed identity is never a cache hit; callers must verify content instead.
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inline bool host_file_identity(const std::filesystem::path& path, std::string& identity) {
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identity.clear();
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#if defined(_WIN32)
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// NTFS change/write timestamps can collide across immediate rewrites,
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// including same-size writes with a restored mtime. A file USN alone also
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// cannot qualify persistent receipts: it may be zero or reset with its
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// journal, and the query is unavailable over SMB3. Until a journal-bound
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// change identity is qualified, retain the portable full-verification path.
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(void)path;
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return false;
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#else
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std::ostringstream out;
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struct stat info{};
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if (stat(path.c_str(), &info) || !S_ISREG(info.st_mode) || info.st_ino == 0) return false;
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out << "posix1:" << info.st_dev << ':' << info.st_ino << ':' << info.st_size;
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#if defined(__APPLE__)
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out << ':' << info.st_mtimespec.tv_sec << ':' << info.st_mtimespec.tv_nsec
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<< ':' << info.st_ctimespec.tv_sec << ':' << info.st_ctimespec.tv_nsec;
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#else
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out << ':' << info.st_mtim.tv_sec << ':' << info.st_mtim.tv_nsec
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<< ':' << info.st_ctim.tv_sec << ':' << info.st_ctim.tv_nsec;
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#endif
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identity = out.str();
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return true;
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#endif
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}
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}
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