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#ifndef ACE_TOKENIZER_T_CPP
#define ACE_TOKENIZER_T_CPP
#include "ace/ACE.h"
#include "ace/Malloc_Base.h"
#include "ace/String_Base.h"
#include "ace/OS_NS_string.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
template <class ACE_CHAR_T>
ACE_Tokenizer_T<ACE_CHAR_T>::ACE_Tokenizer_T (ACE_CHAR_T *buffer)
: buffer_ (buffer),
index_ (0),
preserves_index_ (0),
delimiter_index_ (0)
{
}
template <class ACE_CHAR_T>
int
ACE_Tokenizer_T<ACE_CHAR_T>::delimiter (ACE_CHAR_T d)
{
if (delimiter_index_ == MAX_DELIMITERS)
return -1;
delimiters_[delimiter_index_].delimiter_ = d;
delimiters_[delimiter_index_].replace_ = 0;
++delimiter_index_;
return 0;
}
template <class ACE_CHAR_T>
int
ACE_Tokenizer_T<ACE_CHAR_T>::delimiter_replace (ACE_CHAR_T d,
ACE_CHAR_T replacement)
{
// Make it possible to replace delimiters on-the-fly, e.g., parse
// string until certain token count and then copy rest of the
// original string.
for (int i = 0; i < delimiter_index_; i++)
if (delimiters_[i].delimiter_ == d)
{
delimiters_[i].replacement_ = replacement;
delimiters_[i].replace_ = 1;
return 0;
}
if (delimiter_index_ >= MAX_DELIMITERS)
return -1;
delimiters_[delimiter_index_].delimiter_ = d;
delimiters_[delimiter_index_].replacement_ = replacement;
delimiters_[delimiter_index_].replace_ = 1;
++delimiter_index_;
return 0;
}
template <class ACE_CHAR_T>
int
ACE_Tokenizer_T<ACE_CHAR_T>::preserve_designators (ACE_CHAR_T start,
ACE_CHAR_T stop,
int strip)
{
if (preserves_index_ == MAX_PRESERVES)
return -1;
preserves_[preserves_index_].start_ = start;
preserves_[preserves_index_].stop_ = stop;
preserves_[preserves_index_].strip_ = strip;
++preserves_index_;
return 0;
}
template <class ACE_CHAR_T>
int
ACE_Tokenizer_T<ACE_CHAR_T>::is_delimiter (ACE_CHAR_T d,
int &replace,
ACE_CHAR_T &r)
{
replace = 0;
for (int x = 0; x < delimiter_index_; x++)
if (delimiters_[x].delimiter_ == d)
{
if (delimiters_[x].replace_)
{
r = delimiters_[x].replacement_;
replace = 1;
}
return 1;
}
return 0;
}
template <class ACE_CHAR_T>
int
ACE_Tokenizer_T<ACE_CHAR_T>::is_preserve_designator (ACE_CHAR_T start,
ACE_CHAR_T &stop,
int &strip)
{
for (int x = 0; x < preserves_index_; x++)
if (preserves_[x].start_ == start)
{
stop = preserves_[x].stop_;
strip = preserves_[x].strip_;
return 1;
}
return 0;
}
template <class ACE_CHAR_T>
ACE_CHAR_T *
ACE_Tokenizer_T<ACE_CHAR_T>::next (void)
{
// Check if the previous pass was the last one in the buffer.
if (index_ == -1)
{
index_ = 0;
return 0;
}
// Check if a buffer has been passed
if (!buffer_)
{
return 0;
}
ACE_CHAR_T replacement = 0;
int replace;
ACE_CHAR_T *next_token = 0;
// Skip all leading delimiters.
for (;;)
{
// Check for end of string.
if (buffer_[index_] == '\0')
{
// If we hit EOS at the start, return 0.
index_ = 0;
return 0;
}
if (this->is_delimiter (buffer_[index_],
replace,
replacement))
++index_;
else
break;
}
// When we reach this point, buffer_[index_] is a non-delimiter and
// not EOS - the start of our next_token.
next_token = buffer_ + index_;
// A preserved region is it's own token.
ACE_CHAR_T stop;
int strip;
if (this->is_preserve_designator (buffer_[index_],
stop,
strip))
{
while (++index_)
{
if (buffer_[index_] == '\0')
{
index_ = -1;
goto EXIT_LABEL;
}
if (buffer_[index_] == stop)
break;
}
if (strip)
{
// Skip start preserve designator.
next_token += 1;
// Zap the stop preserve designator.
buffer_[index_] = '\0';
// Increment to the next token.
++index_;
}
goto EXIT_LABEL;
}
// Step through finding the next delimiter or EOS.
for (;;)
{
// Advance pointer.
++index_;
// Check for delimiter.
if (this->is_delimiter (buffer_[index_],
replace,
replacement))
{
// Replace the delimiter.
if (replace != 0)
buffer_[index_] = replacement;
// Move the pointer up and return.
++index_;
goto EXIT_LABEL;
}
// A preserve designator is NESTED inside this token
// We can't strip such preserve designators, just skip
// over them so that delimiters nested within arn't seen.
if (this->is_preserve_designator (buffer_[index_],
stop,
strip))
{
++index_; // Skip starting preserve_designator
while (('\0' != buffer_[index_]) && (stop != buffer_[index_]))
++index_; // Skip enclosed character
}
// Check for end of string.
if (buffer_[index_] == '\0')
{
index_ = -1;
goto EXIT_LABEL;
}
}
EXIT_LABEL:
return next_token;
}
// *************************************************************
ACE_END_VERSIONED_NAMESPACE_DECL
#endif /* ACE_TOKENIZER_T_CPP */
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