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// $Id$
#include "ACEXML/common/StrCharStream.h"
#include "ACEXML/common/Encoding.h"
#include "ace/ACE.h"
ACEXML_StrCharStream::ACEXML_StrCharStream (void)
: start_ (0), ptr_ (0), end_ (0), encoding_ (0)
{
}
ACEXML_StrCharStream::ACEXML_StrCharStream (const ACEXML_Char *str)
: start_ (0), ptr_ (0), end_ (0), encoding_ (0)
{
this->open (str);
}
ACEXML_StrCharStream::~ACEXML_StrCharStream (void)
{
this->close();
}
int
ACEXML_StrCharStream::open (const ACEXML_Char *str)
{
delete[] this->start_;
delete[] this->encoding_;
if (str != 0 && (this->start_ = ACE::strnew (str)) != 0)
{
this->ptr_ = this->start_;
this->end_ = this->start_ + ACE_OS_String::strlen (this->start_);
if (this->determine_encoding() == -1)
return -1;
return 0;
}
this->start_ = this->ptr_ = this->end_ = 0;
return -1; // Invalid string passed.
}
int
ACEXML_StrCharStream::available (void)
{
if (this->start_ != 0)
return (this->end_ - this->start_); // @@ Will this work on all platforms?
return -1;
}
int
ACEXML_StrCharStream::close (void)
{
delete[] this->start_;
delete[] this->encoding_;
this->start_ = this->ptr_ = this->end_ = 0;
return 0;
}
int
ACEXML_StrCharStream::determine_encoding (void)
{
char input[4];
int retval = 0;
char* sptr = (char*)this->start_;
int i = 0;
for ( ; i < 4 && sptr != (char*)this->end_; ++sptr, ++i)
{
retval = input[i] = *sptr;
}
if (i < 4)
return -1;
const ACEXML_Char* temp = ACEXML_Encoding::get_encoding (input);
if (!temp)
return -1;
else
{
this->encoding_ = ACE::strnew (temp);
// ACE_DEBUG ((LM_DEBUG, "String's encoding is %s\n", this->encoding_));
}
return 0;
}
void
ACEXML_StrCharStream::rewind (void)
{
this->ptr_ = this->start_;
}
int
ACEXML_StrCharStream::get (ACEXML_Char& ch)
{
if (this->start_ != 0 && this->ptr_ != this->end_)
{
ch = *this->ptr_++;
return 0;
}
return -1;
}
int
ACEXML_StrCharStream::read (ACEXML_Char *str, size_t len)
{
if (this->start_ != 0 &&
this->ptr_ != this->end_)
{
if (len * sizeof (ACEXML_Char) > (size_t) (this->end_ - this->ptr_))
len = this->end_ - this->ptr_;
ACE_OS_String::strncpy (str, this->ptr_, len);
this->ptr_ += len;
return len;
}
return 0;
}
int
ACEXML_StrCharStream::peek (void)
{
if (this->start_ != 0 && this->ptr_ != this->end_)
return *this->ptr_;
return -1;
}
const ACEXML_Char*
ACEXML_StrCharStream::getEncoding (void)
{
return this->encoding_;
}
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