459 lines
10 KiB
C++
459 lines
10 KiB
C++
// Common/Wildcard.cpp
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#include "StdAfx.h"
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#include "Wildcard.h"
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bool g_CaseSensitive =
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#ifdef _WIN32
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false;
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#else
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true;
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#endif
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static const wchar_t kAnyCharsChar = L'*';
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static const wchar_t kAnyCharChar = L'?';
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#ifdef _WIN32
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static const wchar_t kDirDelimiter1 = L'\\';
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#endif
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static const wchar_t kDirDelimiter2 = L'/';
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static const UString kWildCardCharSet = L"?*";
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static const UString kIllegalWildCardFileNameChars=
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L"\x1\x2\x3\x4\x5\x6\x7\x8\x9\xA\xB\xC\xD\xE\xF"
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L"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F"
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L"\"/:<>\\|";
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static inline bool IsCharDirLimiter(wchar_t c)
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{
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return (
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#ifdef _WIN32
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c == kDirDelimiter1 ||
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#endif
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c == kDirDelimiter2);
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}
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int CompareFileNames(const UString &s1, const UString &s2)
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{
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if (g_CaseSensitive)
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return s1.Compare(s2);
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return s1.CompareNoCase(s2);
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}
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// -----------------------------------------
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// this function compares name with mask
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// ? - any char
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// * - any char or empty
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static bool EnhancedMaskTest(const wchar_t *mask, const wchar_t *name)
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{
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for (;;)
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{
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wchar_t m = *mask;
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wchar_t c = *name;
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if (m == 0)
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return (c == 0);
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if (m == kAnyCharsChar)
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{
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if (EnhancedMaskTest(mask + 1, name))
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return true;
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if (c == 0)
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return false;
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}
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else
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{
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if (m == kAnyCharChar)
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{
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if (c == 0)
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return false;
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}
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else if (m != c)
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if (g_CaseSensitive || MyCharUpper(m) != MyCharUpper(c))
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return false;
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mask++;
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}
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name++;
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}
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}
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// --------------------------------------------------
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// Splits path to strings
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void SplitPathToParts(const UString &path, UStringVector &pathParts)
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{
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pathParts.Clear();
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UString name;
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int len = path.Length();
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if (len == 0)
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return;
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for (int i = 0; i < len; i++)
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{
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wchar_t c = path[i];
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if (IsCharDirLimiter(c))
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{
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pathParts.Add(name);
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name.Empty();
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}
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else
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name += c;
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}
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pathParts.Add(name);
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}
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void SplitPathToParts(const UString &path, UString &dirPrefix, UString &name)
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{
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int i;
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for(i = path.Length() - 1; i >= 0; i--)
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if(IsCharDirLimiter(path[i]))
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break;
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dirPrefix = path.Left(i + 1);
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name = path.Mid(i + 1);
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}
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UString ExtractDirPrefixFromPath(const UString &path)
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{
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int i;
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for(i = path.Length() - 1; i >= 0; i--)
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if(IsCharDirLimiter(path[i]))
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break;
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return path.Left(i + 1);
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}
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UString ExtractFileNameFromPath(const UString &path)
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{
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int i;
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for(i = path.Length() - 1; i >= 0; i--)
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if(IsCharDirLimiter(path[i]))
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break;
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return path.Mid(i + 1);
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}
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bool CompareWildCardWithName(const UString &mask, const UString &name)
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{
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return EnhancedMaskTest(mask, name);
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}
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bool DoesNameContainWildCard(const UString &path)
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{
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return (path.FindOneOf(kWildCardCharSet) >= 0);
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}
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// ----------------------------------------------------------'
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// NWildcard
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namespace NWildcard {
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/*
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M = MaskParts.Size();
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N = TestNameParts.Size();
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File Dir
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ForFile req M<=N [N-M, N) -
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nonreq M=N [0, M) -
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ForDir req M<N [0, M) ... [N-M-1, N-1) same as ForBoth-File
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nonreq [0, M) same as ForBoth-File
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ForBoth req m<=N [0, M) ... [N-M, N) same as ForBoth-File
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nonreq [0, M) same as ForBoth-File
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*/
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bool CItem::CheckPath(const UStringVector &pathParts, bool isFile) const
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{
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if (!isFile && !ForDir)
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return false;
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int delta = (int)pathParts.Size() - (int)PathParts.Size();
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if (delta < 0)
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return false;
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int start = 0;
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int finish = 0;
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if (isFile)
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{
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if (!ForDir && !Recursive && delta !=0)
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return false;
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if (!ForFile && delta == 0)
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return false;
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if (!ForDir && Recursive)
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start = delta;
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}
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if (Recursive)
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{
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finish = delta;
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if (isFile && !ForFile)
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finish = delta - 1;
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}
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for (int d = start; d <= finish; d++)
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{
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int i;
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for (i = 0; i < PathParts.Size(); i++)
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if (!CompareWildCardWithName(PathParts[i], pathParts[i + d]))
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break;
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if (i == PathParts.Size())
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return true;
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}
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return false;
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}
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int CCensorNode::FindSubNode(const UString &name) const
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{
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for (int i = 0; i < SubNodes.Size(); i++)
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if (CompareFileNames(SubNodes[i].Name, name) == 0)
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return i;
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return -1;
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}
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void CCensorNode::AddItemSimple(bool include, CItem &item)
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{
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if (include)
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IncludeItems.Add(item);
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else
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ExcludeItems.Add(item);
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}
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void CCensorNode::AddItem(bool include, CItem &item)
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{
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if (item.PathParts.Size() <= 1)
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{
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AddItemSimple(include, item);
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return;
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}
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const UString &front = item.PathParts.Front();
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if (DoesNameContainWildCard(front))
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{
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AddItemSimple(include, item);
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return;
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}
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int index = FindSubNode(front);
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if (index < 0)
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index = SubNodes.Add(CCensorNode(front, this));
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item.PathParts.Delete(0);
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SubNodes[index].AddItem(include, item);
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}
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void CCensorNode::AddItem(bool include, const UString &path, bool recursive, bool forFile, bool forDir)
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{
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CItem item;
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SplitPathToParts(path, item.PathParts);
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item.Recursive = recursive;
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item.ForFile = forFile;
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item.ForDir = forDir;
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AddItem(include, item);
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}
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bool CCensorNode::NeedCheckSubDirs() const
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{
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for (int i = 0; i < IncludeItems.Size(); i++)
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{
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const CItem &item = IncludeItems[i];
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if (item.Recursive || item.PathParts.Size() > 1)
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return true;
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}
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return false;
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}
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bool CCensorNode::AreThereIncludeItems() const
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{
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if (IncludeItems.Size() > 0)
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return true;
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for (int i = 0; i < SubNodes.Size(); i++)
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if (SubNodes[i].AreThereIncludeItems())
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return true;
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return false;
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}
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bool CCensorNode::CheckPathCurrent(bool include, const UStringVector &pathParts, bool isFile) const
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{
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const CObjectVector<CItem> &items = include ? IncludeItems : ExcludeItems;
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for (int i = 0; i < items.Size(); i++)
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if (items[i].CheckPath(pathParts, isFile))
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return true;
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return false;
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}
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bool CCensorNode::CheckPath(UStringVector &pathParts, bool isFile, bool &include) const
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{
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if (CheckPathCurrent(false, pathParts, isFile))
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{
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include = false;
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return true;
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}
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include = true;
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bool finded = CheckPathCurrent(true, pathParts, isFile);
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if (pathParts.Size() == 1)
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return finded;
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int index = FindSubNode(pathParts.Front());
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if (index >= 0)
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{
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UStringVector pathParts2 = pathParts;
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pathParts2.Delete(0);
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if (SubNodes[index].CheckPath(pathParts2, isFile, include))
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return true;
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}
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return finded;
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}
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bool CCensorNode::CheckPath(const UString &path, bool isFile, bool &include) const
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{
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UStringVector pathParts;
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SplitPathToParts(path, pathParts);
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return CheckPath(pathParts, isFile, include);
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}
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bool CCensorNode::CheckPath(const UString &path, bool isFile) const
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{
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bool include;
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if(CheckPath(path, isFile, include))
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return include;
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return false;
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}
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bool CCensorNode::CheckPathToRoot(bool include, UStringVector &pathParts, bool isFile) const
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{
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if (CheckPathCurrent(include, pathParts, isFile))
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return true;
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if (Parent == 0)
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return false;
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pathParts.Insert(0, Name);
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return Parent->CheckPathToRoot(include, pathParts, isFile);
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}
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/*
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bool CCensorNode::CheckPathToRoot(bool include, const UString &path, bool isFile) const
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{
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UStringVector pathParts;
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SplitPathToParts(path, pathParts);
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return CheckPathToRoot(include, pathParts, isFile);
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}
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*/
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void CCensorNode::AddItem2(bool include, const UString &path, bool recursive)
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{
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if (path.IsEmpty())
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return;
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bool forFile = true;
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bool forFolder = true;
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UString path2 = path;
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if (IsCharDirLimiter(path[path.Length() - 1]))
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{
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path2.Delete(path.Length() - 1);
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forFile = false;
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}
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AddItem(include, path2, recursive, forFile, forFolder);
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}
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void CCensorNode::ExtendExclude(const CCensorNode &fromNodes)
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{
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ExcludeItems += fromNodes.ExcludeItems;
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for (int i = 0; i < fromNodes.SubNodes.Size(); i++)
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{
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const CCensorNode &node = fromNodes.SubNodes[i];
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int subNodeIndex = FindSubNode(node.Name);
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if (subNodeIndex < 0)
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subNodeIndex = SubNodes.Add(CCensorNode(node.Name, this));
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SubNodes[subNodeIndex].ExtendExclude(node);
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}
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}
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int CCensor::FindPrefix(const UString &prefix) const
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{
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for (int i = 0; i < Pairs.Size(); i++)
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if (CompareFileNames(Pairs[i].Prefix, prefix) == 0)
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return i;
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return -1;
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}
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void CCensor::AddItem(bool include, const UString &path, bool recursive)
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{
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UStringVector pathParts;
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SplitPathToParts(path, pathParts);
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bool forFile = true;
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if (pathParts.Back().IsEmpty())
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{
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forFile = false;
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pathParts.DeleteBack();
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}
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const UString &front = pathParts.Front();
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bool isAbs = false;
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if (front.IsEmpty())
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isAbs = true;
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else if (front.Length() == 2 && front[1] == L':')
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isAbs = true;
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else
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{
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for (int i = 0; i < pathParts.Size(); i++)
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{
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const UString &part = pathParts[i];
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if (part == L".." || part == L".")
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{
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isAbs = true;
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break;
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}
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}
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}
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int numAbsParts = 0;
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if (isAbs)
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if (pathParts.Size() > 1)
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numAbsParts = pathParts.Size() - 1;
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else
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numAbsParts = 1;
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UString prefix;
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for (int i = 0; i < numAbsParts; i++)
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{
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const UString &front = pathParts.Front();
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if (DoesNameContainWildCard(front))
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break;
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prefix += front;
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prefix += WCHAR_PATH_SEPARATOR;
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pathParts.Delete(0);
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}
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int index = FindPrefix(prefix);
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if (index < 0)
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index = Pairs.Add(CPair(prefix));
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CItem item;
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item.PathParts = pathParts;
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item.ForDir = true;
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item.ForFile = forFile;
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item.Recursive = recursive;
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Pairs[index].Head.AddItem(include, item);
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}
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bool CCensor::CheckPath(const UString &path, bool isFile) const
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{
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bool finded = false;
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for (int i = 0; i < Pairs.Size(); i++)
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{
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bool include;
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if (Pairs[i].Head.CheckPath(path, isFile, include))
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{
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if (!include)
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return false;
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finded = true;
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}
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}
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return finded;
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}
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void CCensor::ExtendExclude()
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{
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int i;
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for (i = 0; i < Pairs.Size(); i++)
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if (Pairs[i].Prefix.IsEmpty())
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break;
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if (i == Pairs.Size())
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return;
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int index = i;
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for (i = 0; i < Pairs.Size(); i++)
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if (index != i)
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Pairs[i].Head.ExtendExclude(Pairs[index].Head);
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}
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}
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