730 lines
18 KiB
C++
730 lines
18 KiB
C++
// Windows/FileName.cpp
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#include "StdAfx.h"
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#include "Windows/FileName.h"
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#include "Common/Wildcard.h"
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#include "Common/StringConvert.h"
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namespace NWindows {
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namespace NFile {
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namespace NDir {
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bool MyGetFullPathName(CFSTR path, FString &resFullPath);
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}}}
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namespace NWindows {
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namespace NFile {
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namespace NName {
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#define IS_SEPAR(c) IS_PATH_SEPAR(c)
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int FindSepar(const wchar_t *s) throw()
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{
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for (const wchar_t *p = s;; p++)
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{
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const wchar_t c = *p;
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if (c == 0)
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return -1;
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if (IS_SEPAR(c))
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return (int)(p - s);
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}
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}
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#ifndef USE_UNICODE_FSTRING
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int FindSepar(const FChar *s) throw()
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{
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for (const FChar *p = s;; p++)
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{
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const FChar c = *p;
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if (c == 0)
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return -1;
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if (IS_SEPAR(c))
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return (int)(p - s);
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}
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}
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#endif
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#ifndef USE_UNICODE_FSTRING
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void NormalizeDirPathPrefix(FString &dirPath)
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{
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if (dirPath.IsEmpty())
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return;
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if (dirPath.Back() != FCHAR_PATH_SEPARATOR)
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dirPath += FCHAR_PATH_SEPARATOR;
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}
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#endif
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void NormalizeDirPathPrefix(UString &dirPath)
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{
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if (dirPath.IsEmpty())
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return;
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if (dirPath.Back() != WCHAR_PATH_SEPARATOR)
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dirPath += WCHAR_PATH_SEPARATOR;
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}
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#ifdef _WIN32
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const wchar_t *kSuperPathPrefix = L"\\\\?\\";
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static const wchar_t *kSuperUncPrefix = L"\\\\?\\UNC\\";
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#define IS_DEVICE_PATH(s) ((s)[0] == '\\' && (s)[1] == '\\' && (s)[2] == '.' && (s)[3] == '\\')
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#define IS_SUPER_PREFIX(s) ((s)[0] == '\\' && (s)[1] == '\\' && (s)[2] == '?' && (s)[3] == '\\')
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#define IS_SUPER_OR_DEVICE_PATH(s) ((s)[0] == '\\' && (s)[1] == '\\' && ((s)[2] == '?' || (s)[2] == '.') && (s)[3] == '\\')
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#define IS_LETTER_CHAR(c) ((c) >= 'a' && (c) <= 'z' || (c) >= 'A' && (c) <= 'Z')
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#define IS_UNC_WITH_SLASH(s) ( \
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((s)[0] == 'U' || (s)[0] == 'u') && \
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((s)[1] == 'N' || (s)[1] == 'n') && \
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((s)[2] == 'C' || (s)[2] == 'c') && \
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(s)[3] == '\\')
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bool IsDevicePath(CFSTR s) throw()
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{
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#ifdef UNDER_CE
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s = s;
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return false;
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/*
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// actually we don't know the way to open device file in WinCE.
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unsigned len = MyStringLen(s);
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if (len < 5 || len > 5 || memcmp(s, FTEXT("DSK"), 3 * sizeof(FChar)) != 0)
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return false;
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if (s[4] != ':')
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return false;
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// for reading use SG_REQ sg; if (DeviceIoControl(dsk, IOCTL_DISK_READ));
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*/
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#else
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if (!IS_DEVICE_PATH(s))
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return false;
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unsigned len = MyStringLen(s);
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if (len == 6 && s[5] == ':')
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return true;
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if (len < 18 || len > 22 || memcmp(s + kDevicePathPrefixSize, FTEXT("PhysicalDrive"), 13 * sizeof(FChar)) != 0)
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return false;
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for (unsigned i = 17; i < len; i++)
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if (s[i] < '0' || s[i] > '9')
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return false;
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return true;
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#endif
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}
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bool IsSuperUncPath(CFSTR s) throw() { return (IS_SUPER_PREFIX(s) && IS_UNC_WITH_SLASH(s + kSuperPathPrefixSize)); }
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bool IsDrivePath(const wchar_t *s) throw() { return IS_LETTER_CHAR(s[0]) && s[1] == ':' && s[2] == '\\'; }
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bool IsSuperPath(const wchar_t *s) throw() { return IS_SUPER_PREFIX(s); }
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bool IsSuperOrDevicePath(const wchar_t *s) throw() { return IS_SUPER_OR_DEVICE_PATH(s); }
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// bool IsSuperUncPath(const wchar_t *s) { return (IS_SUPER_PREFIX(s) && IS_UNC_WITH_SLASH(s + kSuperPathPrefixSize)); }
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#ifndef USE_UNICODE_FSTRING
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bool IsDrivePath(CFSTR s) throw() { return IS_LETTER_CHAR(s[0]) && s[1] == ':' && s[2] == '\\'; }
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bool IsSuperPath(CFSTR s) throw() { return IS_SUPER_PREFIX(s); }
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bool IsSuperOrDevicePath(CFSTR s) throw() { return IS_SUPER_OR_DEVICE_PATH(s); }
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#endif // USE_UNICODE_FSTRING
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bool IsAbsolutePath(const wchar_t *s) throw()
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{
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return s[0] == WCHAR_PATH_SEPARATOR || IsDrivePath(s);
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}
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static const unsigned kDrivePrefixSize = 3; /* c:\ */
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#ifndef USE_UNICODE_FSTRING
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static unsigned GetRootPrefixSize_Of_NetworkPath(CFSTR s) throw()
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{
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// Network path: we look "server\path\" as root prefix
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int pos = FindCharPosInString(s, '\\');
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if (pos < 0)
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return 0;
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int pos2 = FindCharPosInString(s + pos + 1, '\\');
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if (pos2 < 0)
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return 0;
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return pos + pos2 + 2;
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}
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static unsigned GetRootPrefixSize_Of_SimplePath(CFSTR s) throw()
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{
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if (IsDrivePath(s))
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return kDrivePrefixSize;
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if (s[0] != '\\' || s[1] != '\\')
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return 0;
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unsigned size = GetRootPrefixSize_Of_NetworkPath(s + 2);
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return (size == 0) ? 0 : 2 + size;
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}
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static unsigned GetRootPrefixSize_Of_SuperPath(CFSTR s) throw()
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{
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if (IS_UNC_WITH_SLASH(s + kSuperPathPrefixSize))
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{
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unsigned size = GetRootPrefixSize_Of_NetworkPath(s + kSuperUncPathPrefixSize);
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return (size == 0) ? 0 : kSuperUncPathPrefixSize + size;
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}
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// we support \\?\c:\ paths and volume GUID paths \\?\Volume{GUID}\"
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int pos = FindCharPosInString(s + kSuperPathPrefixSize, FCHAR_PATH_SEPARATOR);
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if (pos < 0)
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return 0;
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return kSuperPathPrefixSize + pos + 1;
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}
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unsigned GetRootPrefixSize(CFSTR s) throw()
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{
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if (IS_DEVICE_PATH(s))
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return kDevicePathPrefixSize;
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if (IsSuperPath(s))
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return GetRootPrefixSize_Of_SuperPath(s);
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return GetRootPrefixSize_Of_SimplePath(s);
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}
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#endif // USE_UNICODE_FSTRING
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static unsigned GetRootPrefixSize_Of_NetworkPath(const wchar_t *s) throw()
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{
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// Network path: we look "server\path\" as root prefix
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int pos = FindCharPosInString(s, L'\\');
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if (pos < 0)
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return 0;
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int pos2 = FindCharPosInString(s + pos + 1, L'\\');
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if (pos2 < 0)
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return 0;
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return pos + pos2 + 2;
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}
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static unsigned GetRootPrefixSize_Of_SimplePath(const wchar_t *s) throw()
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{
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if (IsDrivePath(s))
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return kDrivePrefixSize;
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if (s[0] != '\\' || s[1] != '\\')
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return 0;
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unsigned size = GetRootPrefixSize_Of_NetworkPath(s + 2);
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return (size == 0) ? 0 : 2 + size;
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}
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static unsigned GetRootPrefixSize_Of_SuperPath(const wchar_t *s) throw()
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{
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if (IS_UNC_WITH_SLASH(s + kSuperPathPrefixSize))
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{
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unsigned size = GetRootPrefixSize_Of_NetworkPath(s + kSuperUncPathPrefixSize);
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return (size == 0) ? 0 : kSuperUncPathPrefixSize + size;
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}
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// we support \\?\c:\ paths and volume GUID paths \\?\Volume{GUID}\"
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int pos = FindCharPosInString(s + kSuperPathPrefixSize, L'\\');
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if (pos < 0)
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return 0;
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return kSuperPathPrefixSize + pos + 1;
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}
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unsigned GetRootPrefixSize(const wchar_t *s) throw()
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{
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if (IS_DEVICE_PATH(s))
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return kDevicePathPrefixSize;
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if (IsSuperPath(s))
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return GetRootPrefixSize_Of_SuperPath(s);
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return GetRootPrefixSize_Of_SimplePath(s);
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}
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#else // _WIN32
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static const unsigned kDrivePrefixSize = 3; /* c:\ */
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#define IS_LETTER_CHAR(c) ((c) >= 'a' && (c) <= 'z' || (c) >= 'A' && (c) <= 'Z')
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bool IsDrivePath(const wchar_t *s) throw() { return IS_LETTER_CHAR(s[0]) && s[1] == ':' && s[2] == WCHAR_PATH_SEPARATOR; }
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bool IsAbsolutePath(const wchar_t *s) throw() { return s[0] == WCHAR_PATH_SEPARATOR; }
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#ifndef USE_UNICODE_FSTRING
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unsigned GetRootPrefixSize(CFSTR s) throw() { return s[0] == CHAR_PATH_SEPARATOR ? 1 : 0; }
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#endif
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unsigned GetRootPrefixSize(const wchar_t *s) throw() {
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if (IsDrivePath(s))
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return kDrivePrefixSize;
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return s[0] == CHAR_PATH_SEPARATOR ? 1 : 0;
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}
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#endif // _WIN32
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#ifndef UNDER_CE
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static bool GetCurDir(UString &path)
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{
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path.Empty();
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char begin[MAX_PATHNAME_LEN];
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begin[0]='c';
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begin[1]=':';
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char * cret = getcwd(begin+2, MAX_PATHNAME_LEN - 3);
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if (cret)
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{
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#ifdef _UNICODE
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path = GetUnicodeString(begin);
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#else
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path = begin;
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#endif
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return true;
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}
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return false;
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}
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static bool ResolveDotsFolders(UString &s)
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{
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#ifdef _WIN32
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s.Replace(L'/', WCHAR_PATH_SEPARATOR);
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#endif
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for (int i = 0;;)
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{
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wchar_t c = s[i];
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if (c == 0)
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return true;
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if (c == '.' && (i == 0 || s[i - 1] == WCHAR_PATH_SEPARATOR))
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{
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wchar_t c1 = s[i + 1];
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if (c1 == '.')
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{
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wchar_t c2 = s[i + 2];
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if (c2 == WCHAR_PATH_SEPARATOR || c2 == 0)
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{
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if (i == 0)
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return false;
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int k = i - 2;
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for (; k >= 0; k--)
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if (s[k] == WCHAR_PATH_SEPARATOR)
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break;
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unsigned num;
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if (k >= 0)
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{
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num = i + 2 - k;
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i = k;
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}
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else
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{
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num = (c2 == 0 ? (i + 2) : (i + 3));
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i = 0;
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}
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s.Delete(i, num);
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continue;
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}
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}
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else
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{
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if (c1 == WCHAR_PATH_SEPARATOR || c1 == 0)
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{
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unsigned num = 2;
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if (i != 0)
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i--;
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else if (c1 == 0)
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num = 1;
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s.Delete(i, num);
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continue;
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}
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}
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}
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i++;
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}
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}
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#endif // UNDER_CE
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#define LONG_PATH_DOTS_FOLDERS_PARSING
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/*
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Windows (at least 64-bit XP) can't resolve "." or ".." in paths that start with SuperPrefix \\?\
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To solve that problem we check such path:
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- super path contains "." or ".." - we use kSuperPathType_UseOnlySuper
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- super path doesn't contain "." or ".." - we use kSuperPathType_UseOnlyMain
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*/
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#ifdef LONG_PATH_DOTS_FOLDERS_PARSING
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#ifndef UNDER_CE
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static bool AreThereDotsFolders(CFSTR s)
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{
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for (unsigned i = 0;; i++)
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{
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FChar c = s[i];
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if (c == 0)
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return false;
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if (c == '.' && (i == 0 || s[i - 1] == CHAR_PATH_SEPARATOR))
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{
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FChar c1 = s[i + 1];
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if (c1 == 0 || c1 == CHAR_PATH_SEPARATOR ||
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(c1 == '.' && (s[i + 2] == 0 || s[i + 2] == CHAR_PATH_SEPARATOR)))
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return true;
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}
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}
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}
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#endif
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#endif // LONG_PATH_DOTS_FOLDERS_PARSING
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#ifdef WIN_LONG_PATH
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/*
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Most of Windows versions have problems, if some file or dir name
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contains '.' or ' ' at the end of name (Bad Path).
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To solve that problem, we always use Super Path ("\\?\" prefix and full path)
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in such cases. Note that "." and ".." are not bad names.
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There are 3 cases:
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1) If the path is already Super Path, we use that path
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2) If the path is not Super Path :
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2.1) Bad Path; we use only Super Path.
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2.2) Good Path; we use Main Path. If it fails, we use Super Path.
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NeedToUseOriginalPath returns:
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kSuperPathType_UseOnlyMain : Super already
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kSuperPathType_UseOnlySuper : not Super, Bad Path
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kSuperPathType_UseMainAndSuper : not Super, Good Path
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*/
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int GetUseSuperPathType(CFSTR s) throw()
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{
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if (IsSuperOrDevicePath(s))
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{
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#ifdef LONG_PATH_DOTS_FOLDERS_PARSING
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if ((s)[2] != '.')
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if (AreThereDotsFolders(s + kSuperPathPrefixSize))
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return kSuperPathType_UseOnlySuper;
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#endif
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return kSuperPathType_UseOnlyMain;
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}
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for (unsigned i = 0;; i++)
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{
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FChar c = s[i];
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if (c == 0)
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return kSuperPathType_UseMainAndSuper;
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if (c == '.' || c == ' ')
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{
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FChar c2 = s[i + 1];
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if (c2 == 0 || c2 == CHAR_PATH_SEPARATOR)
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{
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// if it's "." or "..", it's not bad name.
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if (c == '.')
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{
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if (i == 0 || s[i - 1] == CHAR_PATH_SEPARATOR)
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continue;
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if (s[i - 1] == '.')
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{
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if (i - 1 == 0 || s[i - 2] == CHAR_PATH_SEPARATOR)
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continue;
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}
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}
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return kSuperPathType_UseOnlySuper;
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}
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}
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}
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}
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/*
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returns false in two cases:
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- if GetCurDir was used, and GetCurDir returned error.
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- if we can't resolve ".." name.
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if path is ".", "..", res is empty.
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if it's Super Path already, res is empty.
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for \**** , and if GetCurDir is not drive (c:\), res is empty
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for absolute paths, returns true, res is Super path.
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*/
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static bool GetSuperPathBase(CFSTR s, UString &res)
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{
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res.Empty();
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FChar c = s[0];
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if (c == 0)
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return true;
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if (c == '.' && (s[1] == 0 || (s[1] == '.' && s[2] == 0)))
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return true;
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if (IsSuperOrDevicePath(s))
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{
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#ifdef LONG_PATH_DOTS_FOLDERS_PARSING
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if ((s)[2] == '.')
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return true;
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// we will return true here, so we will try to use these problem paths.
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if (!AreThereDotsFolders(s + kSuperPathPrefixSize))
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return true;
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UString temp = fs2us(s);
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unsigned fixedSize = GetRootPrefixSize_Of_SuperPath(temp);
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if (fixedSize == 0)
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return true;
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UString rem = &temp[fixedSize];
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if (!ResolveDotsFolders(rem))
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return true;
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temp.DeleteFrom(fixedSize);
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res += temp;
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res += rem;
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#endif
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return true;
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}
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if (c == CHAR_PATH_SEPARATOR)
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{
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if (s[1] == CHAR_PATH_SEPARATOR)
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{
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UString temp = fs2us(s + 2);
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unsigned fixedSize = GetRootPrefixSize_Of_NetworkPath(temp);
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if (fixedSize == 0) // maybe we must ignore that error to allow short network paths?
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return false;
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UString rem = &temp[fixedSize];
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if (!ResolveDotsFolders(rem))
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return false;
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res += kSuperUncPrefix;
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temp.DeleteFrom(fixedSize);
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res += temp;
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res += rem;
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return true;
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}
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}
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else
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{
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if (IsDrivePath(s))
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{
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UString temp = fs2us(s);
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UString rem = &temp[kDrivePrefixSize];
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if (!ResolveDotsFolders(rem))
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return true;
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res += kSuperPathPrefix;
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temp.DeleteFrom(kDrivePrefixSize);
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res += temp;
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res += rem;
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return true;
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}
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}
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UString curDir;
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if (!GetCurDir(curDir))
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return false;
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if (curDir.Back() != WCHAR_PATH_SEPARATOR)
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curDir += WCHAR_PATH_SEPARATOR;
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unsigned fixedSizeStart = 0;
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unsigned fixedSize = 0;
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const wchar_t *superMarker = NULL;
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if (IsSuperPath(curDir))
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{
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fixedSize = GetRootPrefixSize_Of_SuperPath(curDir);
|
|
if (fixedSize == 0)
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
if (IsDrivePath(curDir))
|
|
{
|
|
superMarker = kSuperPathPrefix;
|
|
fixedSize = kDrivePrefixSize;
|
|
}
|
|
else
|
|
{
|
|
if (curDir[0] != CHAR_PATH_SEPARATOR || curDir[1] != CHAR_PATH_SEPARATOR)
|
|
return false;
|
|
fixedSizeStart = 2;
|
|
fixedSize = GetRootPrefixSize_Of_NetworkPath(&curDir[2]);
|
|
if (fixedSize == 0)
|
|
return false;
|
|
superMarker = kSuperUncPrefix;
|
|
}
|
|
}
|
|
|
|
UString temp;
|
|
if (c == CHAR_PATH_SEPARATOR)
|
|
{
|
|
temp = fs2us(s + 1);
|
|
}
|
|
else
|
|
{
|
|
temp += &curDir[fixedSizeStart + fixedSize];
|
|
temp += fs2us(s);
|
|
}
|
|
if (!ResolveDotsFolders(temp))
|
|
return false;
|
|
if (superMarker)
|
|
res += superMarker;
|
|
res += curDir.Mid(fixedSizeStart, fixedSize);
|
|
res += temp;
|
|
return true;
|
|
}
|
|
|
|
|
|
/*
|
|
In that case if GetSuperPathBase doesn't return new path, we don't need
|
|
to use same path that was used as main path
|
|
|
|
GetSuperPathBase superPath.IsEmpty() onlyIfNew
|
|
false * * GetCurDir Error
|
|
true false * use Super path
|
|
true true true don't use any path, we already used mainPath
|
|
true true false use main path as Super Path, we don't try mainMath
|
|
That case is possible now if GetCurDir returns unknow
|
|
type of path (not drive and not network)
|
|
|
|
We can change that code if we want to try mainPath, if GetSuperPathBase returns error,
|
|
and we didn't try mainPath still.
|
|
If we want to work that way, we don't need to use GetSuperPathBase return code.
|
|
*/
|
|
|
|
bool GetSuperPath(CFSTR path, UString &superPath, bool onlyIfNew)
|
|
{
|
|
if (GetSuperPathBase(path, superPath))
|
|
{
|
|
if (superPath.IsEmpty())
|
|
{
|
|
// actually the only possible when onlyIfNew == true and superPath is empty
|
|
// is case when
|
|
|
|
if (onlyIfNew)
|
|
return false;
|
|
superPath = fs2us(path);
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool GetSuperPaths(CFSTR s1, CFSTR s2, UString &d1, UString &d2, bool onlyIfNew)
|
|
{
|
|
if (!GetSuperPathBase(s1, d1) ||
|
|
!GetSuperPathBase(s2, d2))
|
|
return false;
|
|
if (d1.IsEmpty() && d2.IsEmpty() && onlyIfNew)
|
|
return false;
|
|
if (d1.IsEmpty()) d1 = fs2us(s1);
|
|
if (d2.IsEmpty()) d2 = fs2us(s2);
|
|
return true;
|
|
}
|
|
|
|
|
|
/*
|
|
// returns true, if we need additional use with New Super path.
|
|
bool GetSuperPath(CFSTR path, UString &superPath)
|
|
{
|
|
if (GetSuperPathBase(path, superPath))
|
|
return !superPath.IsEmpty();
|
|
return false;
|
|
}
|
|
*/
|
|
#endif // WIN_LONG_PATH
|
|
|
|
bool GetFullPath(CFSTR dirPrefix, CFSTR s, FString &res)
|
|
{
|
|
res = s;
|
|
|
|
#ifdef UNDER_CE
|
|
|
|
if (s[0] != CHAR_PATH_SEPARATOR)
|
|
{
|
|
if (!dirPrefix)
|
|
return false;
|
|
res = dirPrefix;
|
|
res += s;
|
|
}
|
|
|
|
#else
|
|
|
|
unsigned prefixSize = GetRootPrefixSize(s);
|
|
if (prefixSize != 0)
|
|
{
|
|
if (!AreThereDotsFolders(s + prefixSize))
|
|
return true;
|
|
|
|
UString rem = fs2us(s + prefixSize);
|
|
if (!ResolveDotsFolders(rem))
|
|
return true; // maybe false;
|
|
res.DeleteFrom(prefixSize);
|
|
res += us2fs(rem);
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
FChar c = s[0];
|
|
if (c == 0)
|
|
return true;
|
|
if (c == '.' && (s[1] == 0 || (s[1] == '.' && s[2] == 0)))
|
|
return true;
|
|
if (c == CHAR_PATH_SEPARATOR && s[1] == CHAR_PATH_SEPARATOR)
|
|
return true;
|
|
if (IsDrivePath(s))
|
|
return true;
|
|
*/
|
|
|
|
UString curDir;
|
|
if (dirPrefix)
|
|
curDir = fs2us(dirPrefix);
|
|
else
|
|
{
|
|
if (!GetCurDir(curDir))
|
|
return false;
|
|
}
|
|
if (!curDir.IsEmpty() && curDir.Back() != WCHAR_PATH_SEPARATOR)
|
|
curDir += WCHAR_PATH_SEPARATOR;
|
|
|
|
unsigned fixedSize = 0;
|
|
|
|
#ifdef _WIN32
|
|
|
|
if (IsSuperPath(curDir))
|
|
{
|
|
fixedSize = GetRootPrefixSize_Of_SuperPath(curDir);
|
|
if (fixedSize == 0)
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
if (IsDrivePath(curDir))
|
|
fixedSize = kDrivePrefixSize;
|
|
else
|
|
{
|
|
if (curDir[0] != WCHAR_PATH_SEPARATOR || curDir[1] != WCHAR_PATH_SEPARATOR)
|
|
return false;
|
|
fixedSize = GetRootPrefixSize_Of_NetworkPath(&curDir[2]);
|
|
if (fixedSize == 0)
|
|
return false;
|
|
fixedSize += 2;
|
|
}
|
|
}
|
|
#else
|
|
if (IsDrivePath(curDir))
|
|
fixedSize = kDrivePrefixSize;
|
|
|
|
#endif // _WIN32
|
|
|
|
UString temp;
|
|
if (s[0] == CHAR_PATH_SEPARATOR)
|
|
{
|
|
temp = fs2us(s + 1);
|
|
}
|
|
else
|
|
{
|
|
temp += curDir.Ptr(fixedSize);
|
|
temp += fs2us(s);
|
|
}
|
|
if (!ResolveDotsFolders(temp))
|
|
return false;
|
|
curDir.DeleteFrom(fixedSize);
|
|
res = us2fs(curDir);
|
|
res += us2fs(temp);
|
|
|
|
#endif // UNDER_CE
|
|
|
|
return true;
|
|
}
|
|
|
|
bool GetFullPath(CFSTR path, FString &fullPath)
|
|
{
|
|
return GetFullPath(NULL, path, fullPath);
|
|
}
|
|
|
|
}}}
|