contain.cxx

基于VXWORKS H323通信技术源代码

}


PString PString::ToLiteral() const
{
  PString str('"');
  for (char * p = theArray; *p != '\0'; p++) {
    if (*p == '"')
      str += "\\\"";
    else if (isprint(*p))
      str += *p;
    else {
      PINDEX i;
      for (i = 0; i < PARRAYSIZE(PStringEscapeValue); i++) {
        if (*p == PStringEscapeValue[i]) {
          str += PString('\\') + PStringEscapeCode[i];
          break;
        }
      }
      if (i >= PARRAYSIZE(PStringEscapeValue))
        str.sprintf("\\%03o", *p & 0xff);
    }
  }
  return str + '"';
}


PString & PString::sprintf(const char * fmt, ...)
{
  va_list args;
  va_start(args, fmt);
  return vsprintf(fmt, args);
}


PString & PString::vsprintf(const char * fmt, va_list arg)
{
  char * p = GetPointer(1000);
  ::vsprintf(p+strlen(p), fmt, arg);
  PAssert(strlen(theArray) < 1000, "Single sprintf() too large");
  PAssert(MakeMinimumSize(), POutOfMemory);
  return *this;
}


PString psprintf(const char * fmt, ...)
{
  PString str;
  va_list args;
  va_start(args, fmt);
  return str.vsprintf(fmt, args);
}


PString pvsprintf(const char * fmt, va_list arg)
{
  PString str;
  return str.vsprintf(fmt, arg);
}


///////////////////////////////////////////////////////////////////////////////

PObject * PCaselessString::Clone() const
{
  return new PCaselessString(*this);
}


PObject::Comparison PCaselessString::InternalCompare(PINDEX offset, char c) const
{
  int c1 = toupper(theArray[offset]);
  int c2 = toupper(c);
  if (c1 < c2)
    return LessThan;
  if (c1 > c2)
    return GreaterThan;
  return EqualTo;
}


PObject::Comparison PCaselessString::InternalCompare(
                         PINDEX offset, PINDEX length, const char * cstr) const
{
  PAssertNULL(cstr);
  while (length-- > 0 && (theArray[offset] != '\0' || *cstr != '\0')) {
    Comparison c = PCaselessString::InternalCompare(offset++, *cstr++);
    if (c != EqualTo)
      return c;
  }
  return EqualTo;
}



///////////////////////////////////////////////////////////////////////////////

int PStringStream::Buffer::overflow(int c)
{
  if (pptr() >= epptr()) {
    int gpos = gptr() - eback();
    int ppos = pptr() - pbase();
    char * newptr = string->GetPointer(string->GetSize() + 32);
    setp(newptr, newptr + string->GetSize() - 1);
    pbump(ppos);
    setg(newptr, newptr + gpos, newptr + ppos);
  }
  if (c != EOF) {
    *pptr() = (char)c;
    pbump(1);
  }
  return 0;
}


int PStringStream::Buffer::underflow()
{
  return gptr() >= egptr() ? EOF : *gptr();
}


int PStringStream::Buffer::sync()
{
  string->MakeMinimumSize();
  char * base = string->GetPointer();
  char * end = base + string->GetLength();
  setg(base, base, end);
  setp(end, end);
  return 0;
}


streampos PStringStream::Buffer::seekoff(streamoff off,
#ifdef __MWERKS__
                                 ios::seekdir dir, ios::openmode mode)
#else
                                 ios::seek_dir dir, int mode)
#endif
{
  int len = string->GetLength();
  int gpos = gptr() - eback();
  int ppos = pptr() - pbase();
  char * newgptr;
  char * newpptr;
  switch (dir) {
    case ios::beg :
      if (off < 0)
        newpptr = newgptr = eback();
      else if (off >= len)
        newpptr = newgptr = egptr();
      else
        newpptr = newgptr = eback()+off;
      break;

    case ios::cur :
      if (off < -ppos)
        newpptr = eback();
      else if (off >= len-ppos)
        newpptr = epptr();
      else
        newpptr = pptr()+off;
      if (off < -gpos)
        newgptr = eback();
      else if (off >= len-gpos)
        newgptr = egptr();
      else
        newgptr = gptr()+off;
      break;

    case ios::end :
      if (off < -len)
        newpptr = newpptr = newgptr = eback();
      else if (off >= 0)
        newpptr = newgptr = egptr();
      else
        newpptr = newgptr = egptr()+off;
      break;

    default:
      PAssertAlways(PInvalidParameter);
      newgptr = gptr();
      newpptr = pptr();
  }

  if ((mode&ios::in) != 0)
    setg(eback(), newgptr, egptr());

  if ((mode&ios::out) != 0)
    setp(newpptr, epptr());

  return 0;
}


PStringStream::PStringStream()
{
  init(new PStringStream::Buffer(this));
}


PStringStream::PStringStream(const PString & str)
  : PString(str)
{
  init(new PStringStream::Buffer(this));
}


PStringStream::PStringStream(const char * cstr)
  : PString(cstr)
{
  init(new PStringStream::Buffer(this));
}


PStringStream & PStringStream::operator=(const char * cstr)
{
  PString::operator=(cstr);
  flush();
  return *this;
}


PStringStream & PStringStream::operator=(const PString & str)
{
  PString::operator=(str);
  flush();
  return *this;
}


PStringStream::~PStringStream()
{
  delete (PStringStream::Buffer *)rdbuf();
  init(NULL);
}


///////////////////////////////////////////////////////////////////////////////

PStringArray::PStringArray(PINDEX count, char const * const * strarr, BOOL caseless)
{
  if (count == 0)
    return;

  PAssertNULL(strarr);
  SetSize(count);
  for (PINDEX i = 0; i < count; i++) {
    PString * newString;
    if (caseless)
      newString = new PCaselessString(strarr[i]);
    else
      newString = new PString(strarr[i]);
    SetAt(i, newString);
  }
}


PString & PStringArray::operator[](PINDEX index)
{
  PASSERTINDEX(index);
  PAssert(SetMinSize(index+1), POutOfMemory);
  if ((*theArray)[index] == NULL)
    (*theArray)[index] = new PString;
  return *(PString *)(*theArray)[index];
}


///////////////////////////////////////////////////////////////////////////////

PStringList::PStringList(PINDEX count, char const * const * strarr, BOOL caseless)
{
  if (count == 0)
    return;

  PAssertNULL(strarr);
  for (PINDEX i = 0; i < count; i++) {
    PString * newString;
    if (caseless)
      newString = new PCaselessString(strarr[i]);
    else
      newString = new PString(strarr[i]);
    Append(newString);
  }
}


///////////////////////////////////////////////////////////////////////////////

PSortedStringList::PSortedStringList(PINDEX count,
                                     char const * const * strarr,
                                     BOOL caseless)
{
  if (count == 0)
    return;

  PAssertNULL(strarr);
  for (PINDEX i = 0; i < count; i++) {
    PString * newString;
    if (caseless)
      newString = new PCaselessString(strarr[i]);
    else
      newString = new PString(strarr[i]);
    Append(newString);
  }
}


///////////////////////////////////////////////////////////////////////////////

PStringSet::PStringSet(PINDEX count, char const * const * strarr, BOOL caseless)
{
  if (count == 0)
    return;

  PAssertNULL(strarr);
  for (PINDEX i = 0; i < count; i++) {
    if (caseless)
      Include(PCaselessString(strarr[i]));
    else
      Include(PString(strarr[i]));
  }
}


///////////////////////////////////////////////////////////////////////////////

POrdinalToString::POrdinalToString(PINDEX count, const Initialiser * init)
{
  while (count-- > 0) {
    SetAt(init->key, init->value);
    init++;
  }
}


///////////////////////////////////////////////////////////////////////////////

PStringToOrdinal::PStringToOrdinal(PINDEX count,
                                   const Initialiser * init,
                                   BOOL caseless)
{
  while (count-- > 0) {
    if (caseless)
      SetAt(PCaselessString(init->key), init->value);
    else
      SetAt(init->key, init->value);
    init++;
  }
}


///////////////////////////////////////////////////////////////////////////////

PStringToString::PStringToString(PINDEX count,
                                 const Initialiser * init,
                                 BOOL caselessKeys,
                                 BOOL caselessValues)
{
  while (count-- > 0) {
    if (caselessValues)
      if (caselessKeys)
        SetAt(PCaselessString(init->key), PCaselessString(init->value));
      else
        SetAt(init->key, PCaselessString(init->value));
    else
      if (caselessKeys)
        SetAt(PCaselessString(init->key), init->value);
      else
        SetAt(init->key, init->value);
    init++;
  }
}


///////////////////////////////////////////////////////////////////////////////

PRegularExpression::PRegularExpression()
{
  lastError = NotCompiled;
  expression = NULL;
}


PRegularExpression::PRegularExpression(const PString & pattern, int flags)
{
  expression = NULL;
  Compile(pattern, flags);
}


PRegularExpression::PRegularExpression(const char * pattern, int flags)
{
  expression = NULL;
  Compile(pattern, flags);
}


PRegularExpression::~PRegularExpression()
{
  if (expression != NULL) {
    regfree(expression);
    delete expression;
  }
}


PRegularExpression::ErrorCodes PRegularExpression::GetErrorCode() const
{
  return (ErrorCodes)lastError;
}


PString PRegularExpression::GetErrorText() const
{
  PString str;
  regerror(lastError, expression, str.GetPointer(256), 256);
  return str;
}


BOOL PRegularExpression::Compile(const PString & pattern, int flags)
{
  return Compile((const char *)pattern, flags);
}


BOOL PRegularExpression::Compile(const char * pattern, int flags)
{
  if (expression != NULL) {
    regfree(expression);
    delete expression;
  }
  if (pattern == NULL || *pattern == '\0')
    return BadPattern;

  expression = new regex_t;
  lastError = regcomp(expression, pattern, flags);
  return lastError == NoError;
}


BOOL PRegularExpression::Execute(const PString & str, PINDEX & start, int flags) const
{
  PINDEX dummy;
  return Execute((const char *)str, start, dummy, flags);
}


BOOL PRegularExpression::Execute(const PString & str, PINDEX & start, PINDEX & len, int flags) const
{
  return Execute((const char *)str, start, len, flags);
}


BOOL PRegularExpression::Execute(const char * cstr, PINDEX & start, int flags) const
{
  PINDEX dummy;
  return Execute(cstr, start, dummy, flags);
}


BOOL PRegularExpression::Execute(const char * cstr, PINDEX & start, PINDEX & len, int flags) const
{
  if (expression == NULL) {
    ((PRegularExpression*)this)->lastError = NotCompiled;
    return FALSE;
  }

  regmatch_t match;

  ((PRegularExpression*)this)->lastError = regexec(expression, cstr, 1, &match, flags);
  if (lastError != NoError)
    return FALSE;

  start = match.rm_so;
  len = match.rm_eo - start;
  return TRUE;
}


BOOL PRegularExpression::Execute(const PString & str, PIntArray & starts, int flags) const
{
  PIntArray dummy;
  return Execute((const char *)str, starts, dummy, flags);
}


BOOL PRegularExpression::Execute(const PString & str,
                                 PIntArray & starts,
                                 PIntArray & ends,
                                 int flags) const
{
  return Execute((const char *)str, starts, ends, flags);
}


BOOL PRegularExpression::Execute(const char * cstr, PIntArray & starts, int flags) const
{
  PIntArray dummy;
  return Execute(cstr, starts, dummy, flags);
}


BOOL PRegularExpression::Execute(const char * cstr,
                                 PIntArray & starts,
                                 PIntArray & ends,
                                 int flags) const
{
  if (expression == NULL) {
    ((PRegularExpression*)this)->lastError = NotCompiled;
    return FALSE;
  }

  regmatch_t single_match;
  regmatch_t * matches = &single_match;

  PINDEX count = starts.GetSize();
  if (count > 1)
    matches = new regmatch_t[count];
  else
    count = 1;

  ((PRegularExpression*)this)->lastError = regexec(expression, cstr, count, matches, flags);

  if (lastError == NoError) {
    starts.SetMinSize(count);
    ends.SetMinSize(count);
    for (PINDEX i = 0; i < count; i++) {
      starts[i] = matches[i].rm_so;
      ends[i] = matches[i].rm_eo;
    }
  }

  if (matches != &single_match)
    delete [] matches;

  return lastError == NoError;
}


PString PRegularExpression::EscapeString(const PString & str)
{
  PString translated;

  PINDEX lastPos = 0;
  PINDEX nextPos;
  while ((nextPos = str.FindOneOf("\\^$+?*.[]()|{}", lastPos+1)) != P_MAX_INDEX) {
    translated += str(lastPos, nextPos-1) + "\\";
    lastPos = nextPos;
  }

  if (lastPos == 0)
    return str;

  return translated + str.Mid(lastPos);
}


// End Of File ///////////////////////////////////////////////////////////////