예제 #1
0
  Symbol* Converter::primitive_convert(STATE, Object* source, String* target,
                                       Fixnum* offset, Fixnum* size, Fixnum* options) {
    String* src = 0;

    if(!source->nil_p()) {
      if(!(src = try_as<String>(source))) {
        return force_as<Symbol>(Primitives::failure());
      }
    }

    OnStack<3> os(state, source, src, target);

    const unsigned char* source_ptr = 0;
    const unsigned char* source_end = 0;

    native_int byte_offset = offset->to_native();
    native_int byte_size = size->to_native();

  retry:

    if(!converter_) {
      size_t num_converters = converters()->size();

      converter_ = rb_econv_alloc(num_converters);

      for(size_t i = 0; i < num_converters; i++) {
        Transcoding* transcoding = as<Transcoding>(converters()->get(state, i));
        rb_transcoder* tr = transcoding->get_transcoder();

        if(rb_econv_add_transcoder_at(converter_, tr, i) == -1) {
          rb_econv_free(converter_);
          converter_ = NULL;
          return force_as<Symbol>(Primitives::failure());
        }
      }
    }

    /* It would be nice to have a heuristic that avoids having to reconvert
     * after growing the destination buffer. This is complicated, however, as
     * a converter may contain more than one transcoder. So, the heuristic
     * would need to be transitive. This requires getting the encoding objects
     * for every stage of the converter to check the min/max byte values.
     */
    if(byte_size == -1) {
      byte_size = src ? src->byte_size() : 4096;
    }

    int flags = converter_->flags = options->to_native();

    if(!replacement()->nil_p()) {
      native_int byte_size = replacement()->byte_size();
      char* buf = (char*)XMALLOC(byte_size + 1);
      strncpy(buf, replacement()->c_str(state), byte_size + 1);
      converter_->replacement_str = (const unsigned char*)buf;
      converter_->replacement_len = replacement()->byte_size();

      String* name = replacement()->encoding()->name();
      byte_size = name->byte_size();
      buf = (char*)XMALLOC(byte_size + 1);
      strncpy(buf, name->c_str(state), byte_size + 1);
      converter_->replacement_enc = (const char*)buf;
      converter_->replacement_allocated = 1;

      size_t num_converters = replacement_converters()->size();
      rb_econv_alloc_replacement_converters(converter_, num_converters / 2);

      for(size_t i = 0, k = 0; i < num_converters; k++, i += 2) {
        rb_econv_replacement_converters* repl_converter;
        repl_converter = converter_->replacement_converters + k;

        name = as<String>(replacement_converters()->get(state, i));
        byte_size = name->byte_size();
        buf = (char*)XMALLOC(byte_size + 1);
        strncpy(buf, name->c_str(state), byte_size + 1);
        repl_converter->destination_encoding_name = (const char*)buf;

        Array* trs = as<Array>(replacement_converters()->get(state, i + 1));
        size_t num_transcoders = trs->size();

        repl_converter->num_transcoders = num_transcoders;
        repl_converter->transcoders = ALLOC_N(rb_transcoder*, num_transcoders);

        for(size_t j = 0; j < num_transcoders; j++) {
          Transcoding* transcoding = as<Transcoding>(trs->get(state, j));
          rb_transcoder* tr = transcoding->get_transcoder();

          repl_converter->transcoders[j] = tr;
        }
      }
    }
예제 #2
0
  Symbol* Converter::primitive_convert(STATE, Object* source, String* target,
                                       Fixnum* offset, Fixnum* size, Fixnum* options) {
    String* src = 0;

    if(!source->nil_p()) {
      if(!(src = try_as<String>(source))) {
        return force_as<Symbol>(Primitives::failure());
      }
    }

    Converter* self = this;
    OnStack<4> os(state, self, source, src, target);

    const unsigned char* source_ptr = 0;
    const unsigned char* source_end = 0;

    native_int byte_offset = offset->to_native();
    native_int byte_size = size->to_native();

  retry:

    if(!self->converter_) {
      size_t num_converters = self->converters()->size();

      self->set_converter(rb_econv_alloc(num_converters));

      for(size_t i = 0; i < num_converters; i++) {
        Transcoding* transcoding = as<Transcoding>(self->converters()->get(state, i));
        rb_transcoder* tr = transcoding->get_transcoder();

        if(rb_econv_add_transcoder_at(self->converter_, tr, i) == -1) {
          rb_econv_free(self->get_converter());
          self->set_converter(NULL);
          return force_as<Symbol>(Primitives::failure());
        }
      }
    }

    /* It would be nice to have a heuristic that avoids having to reconvert
     * after growing the destination buffer. This is complicated, however, as
     * a converter may contain more than one transcoder. So, the heuristic
     * would need to be transitive. This requires getting the encoding objects
     * for every stage of the converter to check the min/max byte values.
     */
    if(byte_size == -1) {
      byte_size = src ? src->byte_size() : 4096;
    }

    int flags = self->converter_->flags = options->to_native();

    if(!self->replacement()->nil_p() && !self->converter_->replacement_str) {
      // First check the array's whether they exist so we don't
      // leak memory or create badly initialized C structures

      size_t num_converters = self->replacement_converters()->size();

      for(size_t i = 0, k = 0; i < num_converters; k++, i += 2) {
        as<String>(self->replacement_converters()->get(state, i));
        as<Array>(self->replacement_converters()->get(state, i + 1));
      }

      native_int byte_size = self->replacement()->byte_size();
      char* buf = (char*)XMALLOC(byte_size + 1);
      strncpy(buf, self->replacement()->c_str(state), byte_size + 1);
      self->converter_->replacement_str = (const unsigned char*)buf;
      self->converter_->replacement_len = self->replacement()->byte_size();

      String* name = self->replacement()->encoding()->name();
      byte_size = name->byte_size();
      buf = (char*)XMALLOC(byte_size + 1);
      strncpy(buf, name->c_str(state), byte_size + 1);
      self->converter_->replacement_enc = (const char*)buf;
      self->converter_->replacement_allocated = 1;

      rb_econv_alloc_replacement_converters(self->converter_, num_converters / 2);

      for(size_t i = 0, k = 0; i < num_converters; k++, i += 2) {
        rb_econv_replacement_converters* repl_converter;
        repl_converter = self->converter_->replacement_converters + k;

        // We can use force_as here since we know type has been checked above
        name = force_as<String>(self->replacement_converters()->get(state, i));
        byte_size = name->byte_size();
        buf = (char*)XMALLOC(byte_size + 1);
        strncpy(buf, name->c_str(state), byte_size + 1);
        repl_converter->destination_encoding_name = (const char*)buf;

        Array* trs = force_as<Array>(replacement_converters()->get(state, i + 1));

        size_t num_transcoders = trs->size();

        repl_converter->num_transcoders = num_transcoders;
        repl_converter->transcoders = ALLOC_N(rb_transcoder*, num_transcoders);

        for(size_t j = 0; j < num_transcoders; j++) {
          Transcoding* transcoding = as<Transcoding>(trs->get(state, j));
          rb_transcoder* tr = transcoding->get_transcoder();

          repl_converter->transcoders[j] = tr;
        }
      }
    }
예제 #3
0
  Symbol* Converter::primitive_convert(STATE, Object* source, String* target,
                                       Fixnum* offset, Fixnum* size, Fixnum* options) {
    String* src = 0;

    if(!source->nil_p()) {
      if(!(src = try_as<String>(source))) {
        return force_as<Symbol>(Primitives::failure());
      }
    }

    if(!converter_) {
      size_t num_converters = converters()->size();

      converter_ = rb_econv_alloc(num_converters);

      for(size_t i = 0; i < num_converters; i++) {
        Transcoding* transcoding = as<Transcoding>(converters()->get(state, i));
        rb_transcoder* tr = transcoding->get_transcoder();

        if(rb_econv_add_transcoder_at(converter_, tr, i) == -1) {
          rb_econv_free(converter_);
          converter_ = NULL;
          return force_as<Symbol>(Primitives::failure());
        }
      }
    }

    if(!replacement()->nil_p()) {
      native_int byte_size = replacement()->byte_size();
      char* buf = (char*)XMALLOC(byte_size + 1);
      strncpy(buf, replacement()->c_str(state), byte_size + 1);
      converter_->replacement_str = (const unsigned char*)buf;
      converter_->replacement_len = replacement()->byte_size();

      String* name = replacement()->encoding()->name();
      byte_size = name->byte_size();
      buf = (char*)XMALLOC(byte_size + 1);
      strncpy(buf, name->c_str(state), byte_size + 1);
      converter_->replacement_enc = (const char*)buf;
      converter_->replacement_allocated = 1;

      size_t num_converters = replacement_converters()->size();
      rb_econv_alloc_replacement_converters(converter_, num_converters / 2);

      for(size_t i = 0, k = 0; i < num_converters; k++, i += 2) {
        rb_econv_replacement_converters* repl_converter;
        repl_converter = converter_->replacement_converters + k;

        name = as<String>(replacement_converters()->get(state, i));
        byte_size = name->byte_size();
        buf = (char*)XMALLOC(byte_size + 1);
        strncpy(buf, name->c_str(state), byte_size + 1);
        repl_converter->destination_encoding_name = (const char*)buf;

        Array* trs = as<Array>(replacement_converters()->get(state, i + 1));
        size_t num_transcoders = trs->size();

        repl_converter->num_transcoders = num_transcoders;
        repl_converter->transcoders = ALLOC_N(rb_transcoder*, num_transcoders);

        for(size_t j = 0; j < num_transcoders; j++) {
          Transcoding* transcoding = as<Transcoding>(trs->get(state, j));
          rb_transcoder* tr = transcoding->get_transcoder();

          repl_converter->transcoders[j] = tr;
        }
      }
    }