Initialer Commit

CPP/7zip/UI/FileManager/TextPairs.cpp

@@ -0,0 +1,190 @@
+// TextPairs.cpp
+
+#include "StdAfx.h"
+
+#include "TextPairs.h"
+
+static const wchar_t kNewLineChar = '\n';
+static const wchar_t kQuoteChar = '\"';
+
+static const wchar_t kBOM = (wchar_t)0xFEFF;
+
+static bool IsSeparatorChar(wchar_t c)
+{
+  return (c == ' ' || c == '\t');
+}
+
+static void RemoveCr(UString &s)
+{
+  s.RemoveChar(L'\x0D');
+}
+
+static UString GetIDString(const wchar_t *srcString, unsigned &finishPos)
+{
+  UString result;
+  bool quotes = false;
+  for (finishPos = 0;;)
+  {
+    wchar_t c = srcString[finishPos];
+    if (c == 0)
+      break;
+    finishPos++;
+    bool isSeparatorChar = IsSeparatorChar(c);
+    if (c == kNewLineChar || (isSeparatorChar && !quotes)
+        || (c == kQuoteChar && quotes))
+      break;
+    else if (c == kQuoteChar)
+      quotes = true;
+    else
+      result += c;
+  }
+  result.Trim();
+  RemoveCr(result);
+  return result;
+}
+
+static UString GetValueString(const wchar_t *srcString, unsigned &finishPos)
+{
+  UString result;
+  for (finishPos = 0;;)
+  {
+    wchar_t c = srcString[finishPos];
+    if (c == 0)
+      break;
+    finishPos++;
+    if (c == kNewLineChar)
+      break;
+    result += c;
+  }
+  result.Trim();
+  RemoveCr(result);
+  return result;
+}
+
+static bool GetTextPairs(const UString &srcString, CObjectVector<CTextPair> &pairs)
+{
+  pairs.Clear();
+  unsigned pos = 0;
+  
+  if (srcString.Len() > 0)
+  {
+    if (srcString[0] == kBOM)
+      pos++;
+  }
+  while (pos < srcString.Len())
+  {
+    unsigned finishPos;
+    UString id = GetIDString((const wchar_t *)srcString + pos, finishPos);
+    pos += finishPos;
+    if (id.IsEmpty())
+      continue;
+    UString value = GetValueString((const wchar_t *)srcString + pos, finishPos);
+    pos += finishPos;
+    if (!id.IsEmpty())
+    {
+      CTextPair pair;
+      pair.ID = id;
+      pair.Value = value;
+      pairs.Add(pair);
+    }
+  }
+  return true;
+}
+
+static int ComparePairIDs(const UString &s1, const UString &s2)
+  { return MyStringCompareNoCase(s1, s2); }
+
+static int ComparePairItems(const CTextPair &p1, const CTextPair &p2)
+  { return ComparePairIDs(p1.ID, p2.ID); }
+
+static int ComparePairItems(void *const *a1, void *const *a2, void * /* param */)
+  { return ComparePairItems(**(const CTextPair **)a1, **(const CTextPair **)a2); }
+
+void CPairsStorage::Sort() { Pairs.Sort(ComparePairItems, 0); }
+
+int CPairsStorage::FindID(const UString &id, int &insertPos) const
+{
+  int left = 0, right = Pairs.Size();
+  while (left != right)
+  {
+    int mid = (left + right) / 2;
+    int compResult = ComparePairIDs(id, Pairs[mid].ID);
+    if (compResult == 0)
+      return mid;
+    if (compResult < 0)
+      right = mid;
+    else
+      left = mid + 1;
+  }
+  insertPos = left;
+  return -1;
+}
+
+int CPairsStorage::FindID(const UString &id) const
+{
+  int pos;
+  return FindID(id, pos);
+}
+
+void CPairsStorage::AddPair(const CTextPair &pair)
+{
+  int insertPos;
+  int pos = FindID(pair.ID, insertPos);
+  if (pos >= 0)
+    Pairs[pos] = pair;
+  else
+    Pairs.Insert(insertPos, pair);
+}
+
+void CPairsStorage::DeletePair(const UString &id)
+{
+  int pos = FindID(id);
+  if (pos >= 0)
+    Pairs.Delete(pos);
+}
+
+bool CPairsStorage::GetValue(const UString &id, UString &value) const
+{
+  value.Empty();
+  int pos = FindID(id);
+  if (pos < 0)
+    return false;
+  value = Pairs[pos].Value;
+  return true;
+}
+
+UString CPairsStorage::GetValue(const UString &id) const
+{
+  int pos = FindID(id);
+  if (pos < 0)
+    return UString();
+  return Pairs[pos].Value;
+}
+
+bool CPairsStorage::ReadFromString(const UString &text)
+{
+  bool result = ::GetTextPairs(text, Pairs);
+  if (result)
+    Sort();
+  else
+    Pairs.Clear();
+  return result;
+}
+
+void CPairsStorage::SaveToString(UString &text) const
+{
+  FOR_VECTOR (i, Pairs)
+  {
+    const CTextPair &pair = Pairs[i];
+    bool multiWord = (pair.ID.Find(L' ') >= 0);
+    if (multiWord)
+      text += L'\"';
+    text += pair.ID;
+    if (multiWord)
+      text += L'\"';
+    text += L' ';
+    text += pair.Value;
+    text += L'\x0D';
+    text.Add_LF();
+  }
+}