C++ RSTRING_PTR函数代码示例

static int
rb_feature_p(const char *feature, const char *ext, int rb, int expanded, const char **fn)
{
    VALUE v, features, p, load_path = 0;
    const char *f, *e;
    long i, len, elen, n;
    st_table *loading_tbl;
    st_data_t data;
    int type;

    if (fn) *fn = 0;
    if (ext) {
	elen = strlen(ext);
	len = strlen(feature) - elen;
	type = rb ? 'r' : 's';
    }
    else {
	len = strlen(feature);
	elen = 0;
	type = 0;
    }
    features = get_loaded_features();
    for (i = 0; i < RARRAY_LEN(features); ++i) {
	v = RARRAY_PTR(features)[i];
	f = StringValuePtr(v);
	if ((n = RSTRING_LEN(v)) < len) continue;
	if (strncmp(f, feature, len) != 0) {
	    if (expanded) continue;
	    if (!load_path) load_path = rb_get_expanded_load_path();
	    if (!(p = loaded_feature_path(f, n, feature, len, type, load_path)))
		continue;
	    expanded = 1;
	    f += RSTRING_LEN(p) + 1;
	}
	if (!*(e = f + len)) {
	    if (ext) continue;
	    return 'u';
	}
	if (*e != '.') continue;
	if ((!rb || !ext) && (IS_SOEXT(e) || IS_DLEXT(e))) {
	    return 's';
	}
	if ((rb || !ext) && (IS_RBEXT(e))) {
	    return 'r';
	}
    }
    loading_tbl = get_loading_table();
    if (loading_tbl) {
	f = 0;
	if (!expanded) {
	    struct loaded_feature_searching fs;
	    fs.name = feature;
	    fs.len = len;
	    fs.type = type;
	    fs.load_path = load_path ? load_path : rb_get_load_path();
	    fs.result = 0;
	    st_foreach(loading_tbl, loaded_feature_path_i, (st_data_t)&fs);
	    if ((f = fs.result) != 0) {
		if (fn) *fn = f;
		goto loading;
	    }
	}
	if (st_get_key(loading_tbl, (st_data_t)feature, &data)) {
	    if (fn) *fn = (const char*)data;
	  loading:
	    if (!ext) return 'u';
	    return !IS_RBEXT(ext) ? 's' : 'r';
	}
	else {
	    VALUE bufstr;
	    char *buf;

	    if (ext && *ext) return 0;
	    bufstr = rb_str_tmp_new(len + DLEXT_MAXLEN);
	    buf = RSTRING_PTR(bufstr);
	    MEMCPY(buf, feature, char, len);
	    for (i = 0; (e = loadable_ext[i]) != 0; i++) {
		strlcpy(buf + len, e, DLEXT_MAXLEN + 1);
		if (st_get_key(loading_tbl, (st_data_t)buf, &data)) {
		    rb_str_resize(bufstr, 0);
		    if (fn) *fn = (const char*)data;
		    return i ? 's' : 'r';
		}
	    }
	    rb_str_resize(bufstr, 0);
	}
    }
    return 0;
}

MRB_API mrb_value
mrb_check_intern_str(mrb_state *mrb, mrb_value str)
{
  return mrb_check_intern(mrb, RSTRING_PTR(str), RSTRING_LEN(str));
}

/*
 * call-seq: initialize(return_type, param_types, options={})
 * @param [Type, Symbol] return_type return type for the function
 * @param [Array<Type, Symbol>] param_types array of parameters types
 * @param [Hash] options
 * @option options [Boolean] :blocking set to true if the C function is a blocking call
 * @option options [Symbol] :convention calling convention see {FFI::Library#calling_convention}
 * @option options [FFI::Enums] :enums
 * @return [self]
 * A new FunctionType instance.
 */
static VALUE
fntype_initialize(int argc, VALUE* argv, VALUE self)
{
    FunctionType *fnInfo;
    ffi_status status;
    VALUE rbReturnType = Qnil, rbParamTypes = Qnil, rbOptions = Qnil;
    VALUE rbEnums = Qnil, rbConvention = Qnil, rbBlocking = Qnil;
#if defined(_WIN32) || defined(__WIN32__)
    VALUE rbConventionStr;
#endif
    int i, nargs;

    nargs = rb_scan_args(argc, argv, "21", &rbReturnType, &rbParamTypes, &rbOptions);
    if (nargs >= 3 && rbOptions != Qnil) {
        rbConvention = rb_hash_aref(rbOptions, ID2SYM(rb_intern("convention")));
        rbEnums = rb_hash_aref(rbOptions, ID2SYM(rb_intern("enums")));
        rbBlocking = rb_hash_aref(rbOptions, ID2SYM(rb_intern("blocking")));
    }

    Check_Type(rbParamTypes, T_ARRAY);

    Data_Get_Struct(self, FunctionType, fnInfo);
    fnInfo->parameterCount = (int) RARRAY_LEN(rbParamTypes);
    fnInfo->parameterTypes = xcalloc(fnInfo->parameterCount, sizeof(*fnInfo->parameterTypes));
    fnInfo->ffiParameterTypes = xcalloc(fnInfo->parameterCount, sizeof(ffi_type *));
    fnInfo->nativeParameterTypes = xcalloc(fnInfo->parameterCount, sizeof(*fnInfo->nativeParameterTypes));
    fnInfo->rbParameterTypes = rb_ary_new2(fnInfo->parameterCount);
    fnInfo->rbEnums = rbEnums;
    fnInfo->blocking = RTEST(rbBlocking);
    fnInfo->hasStruct = false;

    for (i = 0; i < fnInfo->parameterCount; ++i) {
        VALUE entry = rb_ary_entry(rbParamTypes, i);
        VALUE type = rbffi_Type_Lookup(entry);

        if (!RTEST(type)) {
            VALUE typeName = rb_funcall2(entry, rb_intern("inspect"), 0, NULL);
            rb_raise(rb_eTypeError, "Invalid parameter type (%s)", RSTRING_PTR(typeName));
        }

        if (rb_obj_is_kind_of(type, rbffi_FunctionTypeClass)) {
            REALLOC_N(fnInfo->callbackParameters, VALUE, fnInfo->callbackCount + 1);
            fnInfo->callbackParameters[fnInfo->callbackCount++] = type;
        }

        if (rb_obj_is_kind_of(type, rbffi_StructByValueClass)) {
            fnInfo->hasStruct = true;
        }

        rb_ary_push(fnInfo->rbParameterTypes, type);
        Data_Get_Struct(type, Type, fnInfo->parameterTypes[i]);
        fnInfo->ffiParameterTypes[i] = fnInfo->parameterTypes[i]->ffiType;
        fnInfo->nativeParameterTypes[i] = fnInfo->parameterTypes[i]->nativeType;
    }

    fnInfo->rbReturnType = rbffi_Type_Lookup(rbReturnType);
    if (!RTEST(fnInfo->rbReturnType)) {
        VALUE typeName = rb_funcall2(rbReturnType, rb_intern("inspect"), 0, NULL);
        rb_raise(rb_eTypeError, "Invalid return type (%s)", RSTRING_PTR(typeName));
    }
    
    if (rb_obj_is_kind_of(fnInfo->rbReturnType, rbffi_StructByValueClass)) {
        fnInfo->hasStruct = true;
    }

    Data_Get_Struct(fnInfo->rbReturnType, Type, fnInfo->returnType);
    fnInfo->ffiReturnType = fnInfo->returnType->ffiType;


#if (defined(_WIN32) || defined(__WIN32__)) && defined(FFI_STDCALL) 
    rbConventionStr = (rbConvention != Qnil) ? rb_funcall2(rbConvention, rb_intern("to_s"), 0, NULL) : Qnil;
    fnInfo->abi = (rbConventionStr != Qnil && strcmp(StringValueCStr(rbConventionStr), "stdcall") == 0)
            ? FFI_STDCALL : FFI_DEFAULT_ABI;
#else
    fnInfo->abi = FFI_DEFAULT_ABI;
#endif

    status = ffi_prep_cif(&fnInfo->ffi_cif, fnInfo->abi, fnInfo->parameterCount,
            fnInfo->ffiReturnType, fnInfo->ffiParameterTypes);
    switch (status) {
        case FFI_BAD_ABI:
            rb_raise(rb_eArgError, "Invalid ABI specified");
        case FFI_BAD_TYPEDEF:
            rb_raise(rb_eArgError, "Invalid argument type specified");
        case FFI_OK:
            break;
        default:
            rb_raise(rb_eArgError, "Unknown FFI error");
    }
//.........这里部分代码省略.........

/* grpc_rb_md_ary_fill_hash_cb is the hash iteration callback used
   to fill grpc_metadata_array.

   it's capacity should have been computed via a prior call to
   grpc_rb_md_ary_fill_hash_cb
*/
static int grpc_rb_md_ary_fill_hash_cb(VALUE key, VALUE val, VALUE md_ary_obj) {
  grpc_metadata_array *md_ary = NULL;
  long array_length;
  long i;
  char *key_str;
  size_t key_len;
  char *value_str;
  size_t value_len;

  if (TYPE(key) == T_SYMBOL) {
    key_str = (char *)rb_id2name(SYM2ID(key));
    key_len = strlen(key_str);
  } else { /* StringValueCStr does all other type exclusions for us */
    key_str = StringValueCStr(key);
    key_len = RSTRING_LEN(key);
  }

  if (!grpc_header_key_is_legal(key_str, key_len)) {
    rb_raise(rb_eArgError,
             "'%s' is an invalid header key, must match [a-z0-9-_.]+",
             key_str);
    return ST_STOP;
  }

  /* Construct a metadata object from key and value and add it */
  TypedData_Get_Struct(md_ary_obj, grpc_metadata_array,
                       &grpc_rb_md_ary_data_type, md_ary);

  if (TYPE(val) == T_ARRAY) {
    array_length = RARRAY_LEN(val);
    /* If the value is an array, add capacity for each value in the array */
    for (i = 0; i < array_length; i++) {
      value_str = RSTRING_PTR(rb_ary_entry(val, i));
      value_len = RSTRING_LEN(rb_ary_entry(val, i));
      if (!grpc_is_binary_header(key_str, key_len) &&
          !grpc_header_nonbin_value_is_legal(value_str, value_len)) {
        // The value has invalid characters
        rb_raise(rb_eArgError,
                 "Header value '%s' has invalid characters", value_str);
        return ST_STOP;
      }
      md_ary->metadata[md_ary->count].key = key_str;
      md_ary->metadata[md_ary->count].value = value_str;
      md_ary->metadata[md_ary->count].value_length = value_len;
      md_ary->count += 1;
    }
  } else if (TYPE(val) == T_STRING) {
    value_str = RSTRING_PTR(val);
    value_len = RSTRING_LEN(val);
    if (!grpc_is_binary_header(key_str, key_len) &&
        !grpc_header_nonbin_value_is_legal(value_str, value_len)) {
      // The value has invalid characters
      rb_raise(rb_eArgError,
               "Header value '%s' has invalid characters", value_str);
      return ST_STOP;
    }
    md_ary->metadata[md_ary->count].key = key_str;
    md_ary->metadata[md_ary->count].value = value_str;
    md_ary->metadata[md_ary->count].value_length = value_len;
    md_ary->count += 1;
  } else {
    rb_raise(rb_eArgError,
               "Header values must be of type string or array");
    return ST_STOP;
  }

  return ST_CONTINUE;
}

static void
control_frame_dump(rb_thread_t *th, rb_control_frame_t *cfp)
{
    ptrdiff_t pc = -1, bp = -1;
    ptrdiff_t lfp = cfp->lfp - th->stack;
    ptrdiff_t dfp = cfp->dfp - th->stack;
    char lfp_in_heap = ' ', dfp_in_heap = ' ';
    char posbuf[MAX_POSBUF+1];
    int line = 0;
    int nopos = 0;

    const char *magic, *iseq_name = "-", *selfstr = "-", *biseq_name = "-";
    VALUE tmp;

    if (cfp->block_iseq != 0 && BUILTIN_TYPE(cfp->block_iseq) != T_NODE) {
	biseq_name = "";	/* RSTRING(cfp->block_iseq->name)->ptr; */
    }

    if (lfp < 0 || (size_t)lfp > th->stack_size) {
	lfp = (ptrdiff_t)cfp->lfp;
	lfp_in_heap = 'p';
    }
    if (dfp < 0 || (size_t)dfp > th->stack_size) {
	dfp = (ptrdiff_t)cfp->dfp;
	dfp_in_heap = 'p';
    }
    if (cfp->bp) {
	bp = cfp->bp - th->stack;
    }

    switch (VM_FRAME_TYPE(cfp)) {
      case VM_FRAME_MAGIC_TOP:
	magic = "TOP";
	break;
      case VM_FRAME_MAGIC_METHOD:
	magic = "METHOD";
	break;
      case VM_FRAME_MAGIC_CLASS:
	magic = "CLASS";
	break;
      case VM_FRAME_MAGIC_BLOCK:
	magic = "BLOCK";
	break;
      case VM_FRAME_MAGIC_FINISH:
	magic = "FINISH";
	nopos = 1;
	break;
      case VM_FRAME_MAGIC_CFUNC:
	magic = "CFUNC";
	break;
      case VM_FRAME_MAGIC_PROC:
	magic = "PROC";
	break;
      case VM_FRAME_MAGIC_LAMBDA:
	magic = "LAMBDA";
	break;
      case VM_FRAME_MAGIC_IFUNC:
	magic = "IFUNC";
	break;
      case VM_FRAME_MAGIC_EVAL:
	magic = "EVAL";
	break;
      case 0:
	magic = "------";
	break;
      default:
	magic = "(none)";
	break;
    }

    if (0) {
	tmp = rb_inspect(cfp->self);
	selfstr = StringValueCStr(tmp);
    }
    else {
	selfstr = "";
    }

    if (nopos) {
	/* no name */
    }
    else if (cfp->iseq != 0) {
	if (RUBY_VM_IFUNC_P(cfp->iseq)) {
	    iseq_name = "<ifunc>";
	}
	else {
	    int rb_vm_get_sourceline(rb_control_frame_t *);

	    pc = cfp->pc - cfp->iseq->iseq_encoded;
	    iseq_name = RSTRING_PTR(cfp->iseq->name);
	    line = rb_vm_get_sourceline(cfp);
	    if (line) {
		snprintf(posbuf, MAX_POSBUF, "%s:%d", RSTRING_PTR(cfp->iseq->filename), line);
	    }
	}
    }
    else if (cfp->me) {
	iseq_name = rb_id2name(cfp->me->def->original_id);
	snprintf(posbuf, MAX_POSBUF, ":%s", iseq_name);
	line = -1;
//.........这里部分代码省略.........

static VALUE db_execute(int argc, VALUE *argv, VALUE self)
{
	sqlite3 * db = NULL;
	void **ppDB = NULL;		
	sqlite3_stmt *statement = NULL;
	const char* sql = NULL;
	VALUE arRes = rb_ary_new();
    VALUE* colNames = NULL;
	int nRes = 0;
    char * szErrMsg = 0;
    int is_batch = 0;

	if ((argc < 2) || (argc > 3))
		rb_raise(rb_eArgError, "wrong # of arguments(%d for 3)",argc);
	
	Data_Get_Struct(self, void *, ppDB);
	db = (sqlite3 *)rho_db_get_handle(*ppDB);
	sql = RSTRING_PTR(argv[0]);
    is_batch = argv[1] == Qtrue ? 1 : 0;

    RAWTRACE1("db_execute: %s", sql);

    if ( is_batch )
    {
        rho_db_lock(*ppDB);
        nRes = sqlite3_exec(db, sql,  NULL, NULL, &szErrMsg);
        rho_db_unlock(*ppDB);
    }
    else
    {
        rho_db_lock(*ppDB);

        nRes = rho_db_prepare_statement(*ppDB, sql, -1, &statement);
        //nRes = sqlite3_prepare_v2(db, sql, -1, &statement, NULL);
        if ( nRes != SQLITE_OK)
        {
            szErrMsg = (char *)sqlite3_errmsg(db);
            rho_db_unlock(*ppDB);

            rb_raise(rb_eArgError, "could not prepare statement: %d; Message: %s",nRes, (szErrMsg?szErrMsg:""));
        }

        if ( argc > 2 )
        {
            int i = 0;
            VALUE args = argv[2];
            if ( RARRAY_LEN(args) > 0 && TYPE(RARRAY_PTR(args)[0]) == T_ARRAY )
                args = RARRAY_PTR(args)[0];

            for( ; i < RARRAY_LEN(args); i++ )
            {
                VALUE arg = RARRAY_PTR(args)[i];
                if (NIL_P(arg))
                {
                    sqlite3_bind_null(statement, i+1);
                    continue;
                }

                switch( TYPE(arg) )
                {
                case T_STRING:
                    sqlite3_bind_text(statement, i+1, RSTRING_PTR(arg), RSTRING_LEN(arg), SQLITE_TRANSIENT);
                    break;
                case T_FLOAT:
                    sqlite3_bind_double(statement, i+1, NUM2DBL(arg));
                    break;
                case T_FIXNUM:
                case T_BIGNUM:
                    sqlite3_bind_int64(statement, i+1, NUM2LL(arg));
                    break;
                default:
					{
						VALUE strVal = rb_funcall(arg, rb_intern("to_s"), 0);	
	                    sqlite3_bind_text(statement, i+1, RSTRING_PTR(strVal), -1, SQLITE_TRANSIENT);	
					}
					break;
                }
            }
        }

	    while( (nRes=sqlite3_step(statement)) == SQLITE_ROW) {
		    int nCount = sqlite3_data_count(statement);
		    int nCol = 0;
		    VALUE hashRec = rb_hash_new();

            //if ( !colNames )
            //    colNames = getColNames(statement, nCount);

		    for(;nCol<nCount;nCol++){
			    int nColType = sqlite3_column_type(statement,nCol);
			    const char* szColName = sqlite3_column_name(statement,nCol);
			    VALUE colName = rb_str_new2(szColName);
			    VALUE colValue = Qnil;
    			
			    switch(nColType){
				    case SQLITE_NULL:
					    break;
                    case SQLITE_FLOAT:
                    {
                        double dVal = sqlite3_column_double(statement, nCol);
//.........这里部分代码省略.........

static VALUE rb_process_number(VALUE process_name)
{
  char *p_className = RSTRING_PTR(process_name);
  return rb_funcall(rb_const_get(rb_cObject, rb_intern(p_className)),
          rb_intern("getCount"), 0);
}

static VALUE Node_init(int argc, VALUE *args, VALUE self)
{
    vx_graph graph = 0;
    vx_kernel kernel = 0;
    Check_Type(self, T_DATA);

    if (argc <= 1)
        rb_raise(rb_eArgError, "Not enough arguments");

    graph = (vx_graph)DATA_PTR(args[0]);

    if (argc == 2) // Kernel
    {
        Check_Type(args[1], T_DATA);
        kernel = (vx_kernel)DATA_PTR(args[1]);
        DATA_PTR(self) = (void *)vxCreateGenericNode(graph, kernel);
    }
    else if (argc == 3) // graph, [string|enum], array of hashes
    {
        vx_node node = 0;
        VALUE kern = args[1];
        VALUE array = args[2];
        long param = 0;

        if (TYPE(kern) == T_STRING)
            kernel = vxGetKernelByName(context, RSTRING_PTR(kern));
        else if (TYPE(kern) == T_FIXNUM)
            kernel = vxGetKernelByEnum(context, FIX2INT(kern));
        else if (TYPE(kern) == T_DATA) // a OpenVX::Kernel
            kernel = (vx_kernel)DATA_PTR(kern);
        else
            rb_raise(rb_eTypeError, "kernel must be a string, fixnum, or OpenVX::Kernel");

        if (kernel == 0)
            rb_raise(rb_eNameError, "kernel could not be found in OpenVX");

        Check_Type(array, T_ARRAY);

        node = vxCreateGenericNode(graph, kernel);
        if (node == 0)
            rb_raise(rb_eTypeError, "node could not be created!");

        REXT_PRINT("Array of parameters has len = %ld\n", RARRAY_LEN(array));
        for (param = 0; param < RARRAY_LEN(array) ; param++)
        {
            VALUE ref,hash;
            vx_reference ref2 = 0;
            vx_status status = 0;
            const char *name = NULL;

            hash = rb_ary_entry(array, param);
            Check_Type(hash, T_HASH);
            ref = rb_hash_aref(hash, ID2SYM(rb_intern("ref")));
            name = rb_obj_classname(ref);
            REXT_PRINT("ref class = %s\n", name);
            Check_Type(ref, T_DATA);
            ref2 = (vx_reference)DATA_PTR(ref);
            status = vxSetParameterByIndex(node, param, ref2);
            REXT_PRINT("status = %d\n", status);

        }
        DATA_PTR(self) = (void *)node;
    }
    else
    {
        rb_raise(rb_eArgError, "incorrect number of arguments");
    }
    return Qnil;
}

/* call-seq: String#clear!
 *
 * Zero out the string contents.
 */
VALUE rb_str_clear_bang(VALUE str)
{
  memset(RSTRING_PTR(str), 0, RSTRING_LEN(str));
  return str;
}

mrb_value
mrb_str_format(mrb_state *mrb, int argc, const mrb_value *argv, mrb_value fmt)
{
  const char *p, *end;
  char *buf;
  long blen, bsiz;
  mrb_value result;
  int n;
  int width, prec, flags = FNONE;
  int nextarg = 1;
  int posarg = 0;
  mrb_value nextvalue;
  mrb_value tmp;
  mrb_value str;
  mrb_value hash = mrb_undef_value();

#define CHECK_FOR_WIDTH(f)                                                  \
  if ((f) & FWIDTH) {                                                       \
    mrb_raise(mrb, E_ARGUMENT_ERROR, "width given twice");         \
  }                                                                         \
  if ((f) & FPREC0) {                                                       \
    mrb_raise(mrb, E_ARGUMENT_ERROR, "width after precision");     \
  }
#define CHECK_FOR_FLAGS(f)                                                  \
  if ((f) & FWIDTH) {                                                       \
    mrb_raise(mrb, E_ARGUMENT_ERROR, "flag after width");          \
  }                                                                         \
  if ((f) & FPREC0) {                                                       \
    mrb_raise(mrb, E_ARGUMENT_ERROR, "flag after precision");      \
  }

  ++argc;
  --argv;
  mrb_string_value(mrb, &fmt);
  p = RSTRING_PTR(fmt);
  end = p + RSTRING_LEN(fmt);
  blen = 0;
  bsiz = 120;
  result = mrb_str_buf_new(mrb, bsiz);
  buf = RSTRING_PTR(result);
  memset(buf, 0, bsiz);

  for (; p < end; p++) {
    const char *t;
    mrb_sym id = 0;

    for (t = p; t < end && *t != '%'; t++) ;
    PUSH(p, t - p);
    if (t >= end)
      goto sprint_exit; /* end of fmt string */

    p = t + 1;    /* skip `%' */

    width = prec = -1;
    nextvalue = mrb_undef_value();

retry:
    switch (*p) {
      default:
        mrb_raisef(mrb, E_ARGUMENT_ERROR, "malformed format string - %%%c", *p);
        break;

      case ' ':
        CHECK_FOR_FLAGS(flags);
        flags |= FSPACE;
        p++;
        goto retry;

      case '#':
        CHECK_FOR_FLAGS(flags);
        flags |= FSHARP;
        p++;
        goto retry;

      case '+':
        CHECK_FOR_FLAGS(flags);
        flags |= FPLUS;
        p++;
        goto retry;

      case '-':
        CHECK_FOR_FLAGS(flags);
        flags |= FMINUS;
        p++;
        goto retry;

      case '0':
        CHECK_FOR_FLAGS(flags);
        flags |= FZERO;
        p++;
        goto retry;

      case '1': case '2': case '3': case '4':
      case '5': case '6': case '7': case '8': case '9':
        n = 0;
        GETNUM(n, width);
        if (*p == '$') {
          if (!mrb_undef_p(nextvalue)) {
            mrb_raisef(mrb, E_ARGUMENT_ERROR, "value given twice - %d$", n);
          }
//.........这里部分代码省略.........

/*
 * call-seq:
 *    parser.parse(yaml)
 *
 * Parse the YAML document contained in +yaml+.  Events will be called on
 * the handler set on the parser instance.
 *
 * See Psych::Parser and Psych::Parser#handler
 */
static VALUE parse(int argc, VALUE *argv, VALUE self)
{
    VALUE yaml, path;
    yaml_parser_t * parser;
    yaml_event_t event;
    int done = 0;
    int tainted = 0;
    int state = 0;
    int parser_encoding = YAML_ANY_ENCODING;
#ifdef HAVE_RUBY_ENCODING_H
    int encoding = rb_utf8_encindex();
    rb_encoding * internal_enc = rb_default_internal_encoding();
#endif
    VALUE handler = rb_iv_get(self, "@handler");

    if (rb_scan_args(argc, argv, "11", &yaml, &path) == 1) {
	if(rb_respond_to(yaml, id_path))
	    path = rb_funcall(yaml, id_path, 0);
	else
	    path = rb_str_new2("<unknown>");
    }

    TypedData_Get_Struct(self, yaml_parser_t, &psych_parser_type, parser);

    yaml_parser_delete(parser);
    yaml_parser_initialize(parser);

    if (OBJ_TAINTED(yaml)) tainted = 1;

    if (rb_respond_to(yaml, id_read)) {
#ifdef HAVE_RUBY_ENCODING_H
	yaml = transcode_io(yaml, &parser_encoding);
	yaml_parser_set_encoding(parser, parser_encoding);
#endif
	yaml_parser_set_input(parser, io_reader, (void *)yaml);
	if (RTEST(rb_obj_is_kind_of(yaml, rb_cIO))) tainted = 1;
    } else {
	StringValue(yaml);
#ifdef HAVE_RUBY_ENCODING_H
	yaml = transcode_string(yaml, &parser_encoding);
	yaml_parser_set_encoding(parser, parser_encoding);
#endif
	yaml_parser_set_input_string(
		parser,
		(const unsigned char *)RSTRING_PTR(yaml),
		(size_t)RSTRING_LEN(yaml)
		);
    }

    while(!done) {
	if(!yaml_parser_parse(parser, &event)) {
	    VALUE exception;

	    exception = make_exception(parser, path);
	    yaml_parser_delete(parser);
	    yaml_parser_initialize(parser);

	    rb_exc_raise(exception);
	}

	switch(event.type) {
	    case YAML_STREAM_START_EVENT:
	      {
		  VALUE args[2];

		  args[0] = handler;
		  args[1] = INT2NUM((long)event.data.stream_start.encoding);
		  rb_protect(protected_start_stream, (VALUE)args, &state);
	      }
	      break;
	  case YAML_DOCUMENT_START_EVENT:
	    {
		VALUE args[4];
		/* Get a list of tag directives (if any) */
		VALUE tag_directives = rb_ary_new();
		/* Grab the document version */
		VALUE version = event.data.document_start.version_directive ?
		    rb_ary_new3(
			(long)2,
			INT2NUM((long)event.data.document_start.version_directive->major),
			INT2NUM((long)event.data.document_start.version_directive->minor)
			) : rb_ary_new();

		if(event.data.document_start.tag_directives.start) {
		    yaml_tag_directive_t *start =
			event.data.document_start.tag_directives.start;
		    yaml_tag_directive_t *end =
			event.data.document_start.tag_directives.end;
		    for(; start != end; start++) {
			VALUE handle = Qnil;
			VALUE prefix = Qnil;
//.........这里部分代码省略.........

static VALUE
load_ext(VALUE path)
{
    SCOPE_SET(NOEX_PUBLIC);
    return (VALUE)dln_load(RSTRING_PTR(path));
}

static int
search_required(VALUE fname, volatile VALUE *path, int safe_level)
{
    VALUE tmp;
    char *ext, *ftptr;
    int type, ft = 0;
    const char *loading;

    *path = 0;
    ext = strrchr(ftptr = RSTRING_PTR(fname), '.');
    if (ext && !strchr(ext, '/')) {
	if (IS_RBEXT(ext)) {
	    if (rb_feature_p(ftptr, ext, TRUE, FALSE, &loading)) {
		if (loading) *path = rb_str_new2(loading);
		return 'r';
	    }
	    if ((tmp = rb_find_file_safe(fname, safe_level)) != 0) {
		ext = strrchr(ftptr = RSTRING_PTR(tmp), '.');
		if (!rb_feature_p(ftptr, ext, TRUE, TRUE, &loading) || loading)
		    *path = tmp;
		return 'r';
	    }
	    return 0;
	}
	else if (IS_SOEXT(ext)) {
	    if (rb_feature_p(ftptr, ext, FALSE, FALSE, &loading)) {
		if (loading) *path = rb_str_new2(loading);
		return 's';
	    }
	    tmp = rb_str_new(RSTRING_PTR(fname), ext - RSTRING_PTR(fname));
#ifdef DLEXT2
	    OBJ_FREEZE(tmp);
	    if (rb_find_file_ext_safe(&tmp, loadable_ext + 1, safe_level)) {
		ext = strrchr(ftptr = RSTRING_PTR(tmp), '.');
		if (!rb_feature_p(ftptr, ext, FALSE, TRUE, &loading) || loading)
		    *path = tmp;
		return 's';
	    }
#else
	    rb_str_cat2(tmp, DLEXT);
	    OBJ_FREEZE(tmp);
	    if ((tmp = rb_find_file_safe(tmp, safe_level)) != 0) {
		ext = strrchr(ftptr = RSTRING_PTR(tmp), '.');
		if (!rb_feature_p(ftptr, ext, FALSE, TRUE, &loading) || loading)
		    *path = tmp;
		return 's';
	    }
#endif
	}
	else if (IS_DLEXT(ext)) {
	    if (rb_feature_p(ftptr, ext, FALSE, FALSE, &loading)) {
		if (loading) *path = rb_str_new2(loading);
		return 's';
	    }
	    if ((tmp = rb_find_file_safe(fname, safe_level)) != 0) {
		ext = strrchr(ftptr = RSTRING_PTR(tmp), '.');
		if (!rb_feature_p(ftptr, ext, FALSE, TRUE, &loading) || loading)
		    *path = tmp;
		return 's';
	    }
	}
    }
    else if ((ft = rb_feature_p(ftptr, 0, FALSE, FALSE, &loading)) == 'r') {
	if (loading) *path = rb_str_new2(loading);
	return 'r';
    }
    tmp = fname;
    type = rb_find_file_ext_safe(&tmp, loadable_ext, safe_level);
    switch (type) {
      case 0:
	if (ft)
	    break;
	ftptr = RSTRING_PTR(tmp);
	return rb_feature_p(ftptr, 0, FALSE, TRUE, 0);

      default:
	if (ft)
	    break;
      case 1:
	ext = strrchr(ftptr = RSTRING_PTR(tmp), '.');
	if (rb_feature_p(ftptr, ext, !--type, TRUE, &loading) && !loading)
	    break;
	*path = tmp;
    }
    return type ? 's' : 'r';
}

static void
rb_load_internal(VALUE fname, int wrap)
{
    int state;
    rb_thread_t *th = GET_THREAD();
    volatile VALUE wrapper = th->top_wrapper;
    volatile VALUE self = th->top_self;
    volatile int loaded = FALSE;
    volatile int mild_compile_error;
#ifndef __GNUC__
    rb_thread_t *volatile th0 = th;
#endif

    th->errinfo = Qnil; /* ensure */

    if (!wrap) {
	rb_secure(4);		/* should alter global state */
	th->top_wrapper = 0;
    }
    else {
	/* load in anonymous module as toplevel */
	th->top_self = rb_obj_clone(rb_vm_top_self());
	th->top_wrapper = rb_module_new();
	rb_extend_object(th->top_self, th->top_wrapper);
    }

    mild_compile_error = th->mild_compile_error;
    PUSH_TAG();
    state = EXEC_TAG();
    if (state == 0) {
	NODE *node;
	VALUE iseq;

	th->mild_compile_error++;
	node = (NODE *)rb_load_file(RSTRING_PTR(fname));
	loaded = TRUE;
	iseq = rb_iseq_new_top(node, rb_str_new2("<top (required)>"), fname, rb_realpath_internal(Qnil, fname, 1), Qfalse);
	th->mild_compile_error--;
	rb_iseq_eval(iseq);
    }
    POP_TAG();

#ifndef __GNUC__
    th = th0;
    fname = RB_GC_GUARD(fname);
#endif
    th->mild_compile_error = mild_compile_error;
    th->top_self = self;
    th->top_wrapper = wrapper;

    if (!loaded) {
	rb_exc_raise(GET_THREAD()->errinfo);
    }
    if (state) {
	rb_vm_jump_tag_but_local_jump(state, Qundef);
    }

    if (!NIL_P(GET_THREAD()->errinfo)) {
	/* exception during load */
	rb_exc_raise(th->errinfo);
    }
}

{
    return INT2BOOL(Mix_Playing(NUM2INT(channel)));
}

static VALUE Mixer_s_playing_channels(VALUE mod)
{
    return INT2NUM(Mix_Playing(-1));
}

static VALUE Wave_s_load(VALUE class, VALUE filename)
{
    Mix_Chunk *chunk;

    ExportFilenameStringValue(filename);

    chunk = Mix_LoadWAV(RSTRING_PTR(filename));
    if( chunk == NULL ) {
        rb_raise(eSDLError, "Couldn't load wave file %s: %s",
                 RSTRING_PTR(filename), SDL_GetError());
    }
    return Wave_create(chunk);
}

static VALUE Wave_s_loadFromIO(VALUE class, VALUE io)
{
    Mix_Chunk *wave;
    wave = Mix_LoadWAV_RW(rubysdl_RWops_from_ruby_obj(io), 1);
    if( wave == NULL ) {
        rb_raise(eSDLError, "Couldn't load wave file from IO: %s",
                 Mix_GetError());
    }