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// ExtractingFilePath.cpp
#include "StdAfx.h"
#include "../../../Common/Wildcard.h"
#include "../../../Windows/FileName.h"
#include "ExtractingFilePath.h"
bool g_PathTrailReplaceMode =
#ifdef _WIN32
true
#else
false
#endif
;
static void ReplaceIncorrectChars(UString &s)
{
{
for (unsigned i = 0; i < s.Len(); i++)
{
wchar_t c = s[i];
if (
#ifdef _WIN32
c == ':' || c == '*' || c == '?' || c < 0x20 || c == '<' || c == '>' || c == '|' || c == '"'
|| c == '/'
// || c == 0x202E // RLO
||
#endif
c == WCHAR_PATH_SEPARATOR)
s.ReplaceOneCharAtPos(i, '_');
}
}
if (g_PathTrailReplaceMode)
{
/*
// if (g_PathTrailReplaceMode == 1)
{
if (!s.IsEmpty())
{
wchar_t c = s.Back();
if (c == '.' || c == ' ')
{
// s += (wchar_t)(0x9c); // STRING TERMINATOR
s += (wchar_t)'_';
}
}
}
else
*/
{
unsigned i;
for (i = s.Len(); i != 0;)
{
wchar_t c = s[i - 1];
if (c != '.' && c != ' ')
break;
i--;
s.ReplaceOneCharAtPos(i, '_');
// s.ReplaceOneCharAtPos(i, (c == ' ' ? (wchar_t)(0x2423) : (wchar_t)0x00B7));
}
/*
if (g_PathTrailReplaceMode > 1 && i != s.Len())
{
s.DeleteFrom(i);
}
*/
}
}
}
#ifdef _WIN32
/* WinXP-64 doesn't support ':', '\\' and '/' symbols in name of alt stream.
But colon in postfix ":$DATA" is allowed.
WIN32 functions don't allow empty alt stream name "name:" */
void Correct_AltStream_Name(UString &s)
{
unsigned len = s.Len();
const unsigned kPostfixSize = 6;
if (s.Len() >= kPostfixSize
&& StringsAreEqualNoCase_Ascii(s.RightPtr(kPostfixSize), ":$DATA"))
len -= kPostfixSize;
for (unsigned i = 0; i < len; i++)
{
wchar_t c = s[i];
if (c == ':' || c == '\\' || c == '/'
|| c == 0x202E // RLO
)
s.ReplaceOneCharAtPos(i, '_');
}
if (s.IsEmpty())
s = '_';
}
static const unsigned g_ReservedWithNum_Index = 4;
static const char * const g_ReservedNames[] =
{
"CON", "PRN", "AUX", "NUL",
"COM", "LPT"
};
static bool IsSupportedName(const UString &name)
{
for (unsigned i = 0; i < ARRAY_SIZE(g_ReservedNames); i++)
{
const char *reservedName = g_ReservedNames[i];
unsigned len = MyStringLen(reservedName);
if (name.Len() < len)
continue;
if (!name.IsPrefixedBy_Ascii_NoCase(reservedName))
continue;
if (i >= g_ReservedWithNum_Index)
{
wchar_t c = name[len];
if (c < L'0' || c > L'9')
continue;
len++;
}
for (;;)
{
wchar_t c = name[len++];
if (c == 0 || c == '.')
return false;
if (c != ' ')
break;
}
}
return true;
}
static void CorrectUnsupportedName(UString &name)
{
if (!IsSupportedName(name))
name.InsertAtFront(L'_');
}
#endif
static void Correct_PathPart(UString &s)
{
// "." and ".."
if (s.IsEmpty())
return;
if (s[0] == '.' && (s[1] == 0 || s[1] == '.' && s[2] == 0))
s.Empty();
#ifdef _WIN32
else
ReplaceIncorrectChars(s);
#endif
}
// static const char * const k_EmptyReplaceName = "[]";
static const char k_EmptyReplaceName = '_';
UString Get_Correct_FsFile_Name(const UString &name)
{
UString res = name;
Correct_PathPart(res);
#ifdef _WIN32
CorrectUnsupportedName(res);
#endif
if (res.IsEmpty())
res = k_EmptyReplaceName;
return res;
}
void Correct_FsPath(bool absIsAllowed, bool keepAndReplaceEmptyPrefixes, UStringVector &parts, bool isDir)
{
unsigned i = 0;
if (absIsAllowed)
{
#if defined(_WIN32) && !defined(UNDER_CE)
bool isDrive = false;
#endif
if (parts[0].IsEmpty())
{
i = 1;
#if defined(_WIN32) && !defined(UNDER_CE)
if (parts.Size() > 1 && parts[1].IsEmpty())
{
i = 2;
if (parts.Size() > 2 && parts[2] == L"?")
{
i = 3;
if (parts.Size() > 3 && NWindows::NFile::NName::IsDrivePath2(parts[3]))
{
isDrive = true;
i = 4;
}
}
}
#endif
}
#if defined(_WIN32) && !defined(UNDER_CE)
else if (NWindows::NFile::NName::IsDrivePath2(parts[0]))
{
isDrive = true;
i = 1;
}
if (isDrive)
{
// we convert "c:name" to "c:\name", if absIsAllowed path.
UString &ds = parts[i - 1];
if (ds.Len() > 2)
{
parts.Insert(i, ds.Ptr(2));
ds.DeleteFrom(2);
}
}
#endif
}
if (i != 0)
keepAndReplaceEmptyPrefixes = false;
for (; i < parts.Size();)
{
UString &s = parts[i];
Correct_PathPart(s);
if (s.IsEmpty())
{
if (!keepAndReplaceEmptyPrefixes)
if (isDir || i != parts.Size() - 1)
{
parts.Delete(i);
continue;
}
s = k_EmptyReplaceName;
}
else
{
keepAndReplaceEmptyPrefixes = false;
#ifdef _WIN32
CorrectUnsupportedName(s);
#endif
}
i++;
}
if (!isDir)
{
if (parts.IsEmpty())
parts.Add((UString)k_EmptyReplaceName);
else
{
UString &s = parts.Back();
if (s.IsEmpty())
s = k_EmptyReplaceName;
}
}
}
UString MakePathFromParts(const UStringVector &parts)
{
UString s;
FOR_VECTOR (i, parts)
{
if (i != 0)
s.Add_PathSepar();
s += parts[i];
}
return s;
}
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