C++ (Cpp) CHECK_MEMORY_OP_JUMP Examples

Example #1

File: cuetext.c Project: Tripleman/mozilla-central

WEBVTT_INTERN webvtt_status
webvtt_class_state( webvtt_byte **position, webvtt_token_state *token_state, 
                    webvtt_stringlist *css_classes )
{
  webvtt_string buffer;
  webvtt_status status = WEBVTT_SUCCESS;

  CHECK_MEMORY_OP( webvtt_create_string( 1, &buffer ) );

  for( ; *token_state == START_TAG_CLASS; (*position)++ ) {
    if( **position == UTF8_TAB || **position == UTF8_FORM_FEED ||
        **position == UTF8_SPACE || **position == UTF8_LINE_FEED ||
        **position == UTF8_CARRIAGE_RETURN) {
      CHECK_MEMORY_OP_JUMP( status, webvtt_stringlist_push( css_classes, &buffer ) );
      *token_state = START_TAG_ANNOTATION;
      return WEBVTT_SUCCESS;
    } else if( **position == UTF8_GREATER_THAN || **position == UTF8_NULL_BYTE ) {
      CHECK_MEMORY_OP_JUMP( status, webvtt_stringlist_push( css_classes, &buffer ) );
      webvtt_release_string( &buffer );
      return WEBVTT_SUCCESS;
    } else if( **position == UTF8_FULL_STOP ) {
      CHECK_MEMORY_OP_JUMP( status, webvtt_stringlist_push( css_classes, &buffer ) );
      webvtt_release_string( &buffer );
      CHECK_MEMORY_OP( webvtt_create_string( 1, &buffer ) );
    } else {
      CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( &buffer, **position ) );
    }
  }

dealloc:
  webvtt_release_string( &buffer );

  return status;
}

Example #2

WEBVTT_INTERN webvtt_status
webvtt_class_state( webvtt_byte **position, webvtt_token_state *token_state, 
                    webvtt_stringlist *css_classes )
{
  webvtt_string buffer;
  webvtt_status status = WEBVTT_SUCCESS;

  CHECK_MEMORY_OP( webvtt_create_string( 1, &buffer ) );

  for( ; *token_state == START_TAG_CLASS; (*position)++ ) {
    if( **position == '\t' || **position == '\f' ||
        **position == ' ' || **position == '\n' ||
        **position == '\r') {
      CHECK_MEMORY_OP_JUMP( status, webvtt_stringlist_push( css_classes, &buffer ) );
      *token_state = START_TAG_ANNOTATION;
      return WEBVTT_SUCCESS;
    } else if( **position == '>' || **position == '\0' ) {
      CHECK_MEMORY_OP_JUMP( status, webvtt_stringlist_push( css_classes, &buffer ) );
      webvtt_release_string( &buffer );
      return WEBVTT_SUCCESS;
    } else if( **position == '.' ) {
      CHECK_MEMORY_OP_JUMP( status, webvtt_stringlist_push( css_classes, &buffer ) );
      webvtt_release_string( &buffer );
      CHECK_MEMORY_OP( webvtt_create_string( 1, &buffer ) );
    } else {
      CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( &buffer, **position ) );
    }
  }

dealloc:
  webvtt_release_string( &buffer );

  return status;
}

Example #3

File: cuetext.c Project: Tripleman/mozilla-central

WEBVTT_INTERN webvtt_status
webvtt_escape_state( webvtt_byte **position, webvtt_token_state *token_state, 
                     webvtt_string *result )
{
  webvtt_string buffer;
  webvtt_status status = WEBVTT_SUCCESS;

  CHECK_MEMORY_OP_JUMP( status, webvtt_create_string( 1, &buffer ) );

  /**
   * Append ampersand here because the algorithm is not able to add it to the
   * buffer when it reads it in the DATA state tokenizer.
   */
  CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( &buffer, UTF8_AMPERSAND ) );

  for( ; *token_state == ESCAPE; (*position)++ ) {
    /**
     * We have encountered a token termination point.
     * Append buffer to result and return success.
     */
    if( **position == UTF8_NULL_BYTE || **position == UTF8_LESS_THAN ) {
      CHECK_MEMORY_OP_JUMP( status, webvtt_string_append_string( result, &buffer ) );
      goto dealloc;
    }
    /**
     * This means we have enocuntered a malformed escape character sequence.
     * This means that we need to add that malformed text to the result and
     * recreate the buffer to prepare for a new escape sequence.
     */
    else if( **position == UTF8_AMPERSAND ) {
      CHECK_MEMORY_OP_JUMP( status, webvtt_string_append_string( result, &buffer ) );
      webvtt_release_string( &buffer );
      CHECK_MEMORY_OP_JUMP( status, webvtt_create_string( 1, &buffer ) );
      CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( &buffer, *position[0] ) );
    }
    /**
     * We've encountered the semicolon which is the end of an escape sequence.
     * Check if buffer contains a valid escape sequence and if it does append
     * the interpretation to result and change the state to DATA.
     */
    else if( **position == UTF8_SEMI_COLON ) {
      if( webvtt_string_is_equal( &buffer, "&amp", 4 ) ) {
        CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( result, '&' ) );
      } else if( webvtt_string_is_equal( &buffer, "&lt", 3 ) ) {
        CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( result, '<' ) );
      } else if( webvtt_string_is_equal( &buffer, "&gt", 3 ) ) {
        CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( result, '>' ) );
      } else if( webvtt_string_is_equal( &buffer, "&rlm", 4 ) ) {
        CHECK_MEMORY_OP_JUMP( status, webvtt_string_append( result, rlm_replace, RLM_REPLACE_LENGTH ) );
      } else if( webvtt_string_is_equal( &buffer, "&lrm", 4 ) ) {
        CHECK_MEMORY_OP_JUMP( status, webvtt_string_append( result, lrm_replace, LRM_REPLACE_LENGTH ) );
      } else if( webvtt_string_is_equal( &buffer, "&nbsp", 5 ) ) {
        CHECK_MEMORY_OP_JUMP( status, webvtt_string_append( result, nbsp_replace, NBSP_REPLACE_LENGTH ) );
      } else {
        CHECK_MEMORY_OP_JUMP( status, webvtt_string_append_string( result, &buffer ) );
        CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( result, **position ) );
      }

      *token_state = DATA;
      status = WEBVTT_UNFINISHED;
    }
    /**
     * Character is alphanumeric. This means we are in the body of the escape
     * sequence.
     */
    else if( webvtt_isalphanum( **position ) ) {
      CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( &buffer, **position ) );
    }
    /**
     * If we have not found an alphanumeric character then we have encountered
     * a malformed escape sequence. Add buffer to result and continue to parse
     * in DATA state.
     */
    else {
      CHECK_MEMORY_OP_JUMP( status, webvtt_string_append_string( result, &buffer ) );
      CHECK_MEMORY_OP_JUMP( status, webvtt_string_putc( result, **position ) );
      status = WEBVTT_UNFINISHED;
      *token_state = DATA;
    }
  }

dealloc:
  webvtt_release_string( &buffer );

  return status;
}