usr/src/cmd/man/src/util/nsgmls.src/lib/InternalInputSource.cxx

   1 // Copyright (c) 1994 James Clark
   2 // See the file COPYING for copying permission.
   3 #pragma ident   "%Z%%M% %I%     %E% SMI"
   4
   5 #ifdef __GNUG__
   6 #pragma implementation
   7 #endif
   8 #include "splib.h"
   9 #include <string.h>
  10 #include "InternalInputSource.h"
  11 #include "macros.h"
  12
  13 #ifdef SP_NAMESPACE
  14 namespace SP_NAMESPACE {
  15 #endif
  16
  17 InternalInputSource::InternalInputSource(const StringC &str,
  18                                          InputSourceOrigin *origin)
  19 : InputSource(origin, str.data(), str.data() + str.size()), buf_(0),
  20   contents_(&str)
  21 {
  22 }
  23
  24 InternalInputSource::~InternalInputSource()
  25 {
  26   if (buf_)
  27     delete [] buf_;
  28 }
  29
  30 Xchar InternalInputSource::fill(Messenger &)
  31 {
  32   return eE;
  33 }
  34
  35 void InternalInputSource::pushCharRef(Char c, const NamedCharRef &ref)
  36 {
  37   ASSERT(cur() == start());
  38   noteCharRef(startIndex() + (cur() - start()), ref);
  39   if (buf_ == 0) {
  40     buf_ = new Char[end() - start() + 1];
  41     memcpy(buf_ + 1, cur(), (end() - start())*sizeof(Char));
  42     changeBuffer(buf_ + 1, cur());
  43   }
  44   moveLeft();
  45   *(Char *)cur() = c;
  46 }
  47
  48 Boolean InternalInputSource::rewind(Messenger &)
  49 {
  50   reset(contents_->data(),
  51         contents_->data() + contents_->size());
  52   if (buf_) {
  53     delete [] buf_;
  54     buf_ = 0;
  55   }
  56   return 1;
  57 }
  58
  59 #ifdef SP_NAMESPACE
  60 }
  61 #endif