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arangodb/Ahuacatl/ahuacatl-conversions.c

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////////////////////////////////////////////////////////////////////////////////
/// @brief Ahuacatl, conversions
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2010-2012 triagens GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is triAGENS GmbH, Cologne, Germany
///
/// @author Jan Steemann
/// @author Copyright 2012, triagens GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////
#include "Ahuacatl/ahuacatl-conversions.h"
////////////////////////////////////////////////////////////////////////////////
/// @brief append list values to a string buffer
////////////////////////////////////////////////////////////////////////////////
static bool AppendListValues (TRI_string_buffer_t* const buffer,
const TRI_aql_node_t* const node) {
size_t i, n;
n = node->_members._length;
for (i = 0; i < n; ++i) {
if (i > 0) {
if (TRI_AppendCharStringBuffer(buffer, ',') != TRI_ERROR_NO_ERROR) {
return false;
}
}
if (!TRI_NodeJavascriptAql(buffer, TRI_AQL_NODE_MEMBER(node, i))) {
return false;
}
}
return true;
}
// -----------------------------------------------------------------------------
// --SECTION-- public functions
// -----------------------------------------------------------------------------
////////////////////////////////////////////////////////////////////////////////
/// @addtogroup Ahuacatl
/// @{
////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
/// @brief create a json struct from a value node
////////////////////////////////////////////////////////////////////////////////
TRI_json_t* TRI_NodeJsonAql (TRI_aql_context_t* const context,
const TRI_aql_node_t* const node) {
switch (node->_type) {
case AQL_NODE_VALUE: {
switch (node->_value._type) {
case AQL_TYPE_FAIL:
case AQL_TYPE_NULL:
return TRI_CreateNullJson(TRI_UNKNOWN_MEM_ZONE);
case AQL_TYPE_BOOL:
return TRI_CreateBooleanJson(TRI_UNKNOWN_MEM_ZONE, node->_value._value._bool);
case AQL_TYPE_INT:
return TRI_CreateNumberJson(TRI_UNKNOWN_MEM_ZONE, (double) node->_value._value._int);
case AQL_TYPE_DOUBLE:
return TRI_CreateNumberJson(TRI_UNKNOWN_MEM_ZONE, node->_value._value._double);
case AQL_TYPE_STRING:
return TRI_CreateStringCopyJson(TRI_UNKNOWN_MEM_ZONE, node->_value._value._string);
}
}
case AQL_NODE_LIST: {
TRI_json_t* result = TRI_CreateListJson(TRI_UNKNOWN_MEM_ZONE);
size_t i, n;
if (result) {
n = node->_members._length;
for (i = 0; i < n; ++i) {
TRI_PushBackListJson(TRI_UNKNOWN_MEM_ZONE, result, TRI_NodeJsonAql(context, TRI_AQL_NODE_MEMBER(node, i)));
}
}
return result;
}
case AQL_NODE_ARRAY: {
TRI_json_t* result = TRI_CreateArrayJson(TRI_UNKNOWN_MEM_ZONE);
size_t i, n;
if (result) {
n = node->_members._length;
for (i = 0; i < n; ++i) {
TRI_aql_node_t* element = TRI_AQL_NODE_MEMBER(node, i);
TRI_InsertArrayJson(TRI_UNKNOWN_MEM_ZONE, result, TRI_AQL_NODE_STRING(element), TRI_NodeJsonAql(context, TRI_AQL_NODE_MEMBER(element, 0)));
}
}
return result;
}
default: {
return NULL;
}
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief create a value node from a json struct
////////////////////////////////////////////////////////////////////////////////
TRI_aql_node_t* TRI_JsonNodeAql (TRI_aql_context_t* const context,
const TRI_json_t* const json) {
TRI_aql_node_t* node = NULL;
char* value;
switch (json->_type) {
case TRI_JSON_UNUSED:
break;
case TRI_JSON_NULL:
node = TRI_CreateNodeValueNullAql(context);
break;
case TRI_JSON_BOOLEAN:
node = TRI_CreateNodeValueBoolAql(context, json->_value._boolean);
break;
case TRI_JSON_NUMBER:
node = TRI_CreateNodeValueDoubleAql(context, json->_value._number);
break;
case TRI_JSON_STRING:
value = TRI_RegisterStringAql(context, json->_value._string.data, strlen(json->_value._string.data), false);
node = TRI_CreateNodeValueStringAql(context, value);
break;
case TRI_JSON_LIST: {
size_t i;
size_t n;
node = TRI_CreateNodeListAql(context);
n = json->_value._objects._length;
for (i = 0; i < n; ++i) {
TRI_json_t* subJson;
TRI_aql_node_t* member;
subJson = (TRI_json_t*) TRI_AtVector(&json->_value._objects, i);
assert(subJson);
member = TRI_JsonNodeAql(context, subJson);
if (member) {
TRI_PushBackVectorPointer(&node->_members, (void*) member);
}
else {
TRI_SetErrorContextAql(context, TRI_ERROR_OUT_OF_MEMORY, NULL);
return NULL;
}
}
break;
}
case TRI_JSON_ARRAY: {
size_t i;
size_t n;
node = TRI_CreateNodeArrayAql(context);
n = json->_value._objects._length;
for (i = 0; i < n; i += 2) {
TRI_json_t* nameJson;
TRI_json_t* valueJson;
TRI_aql_node_t* member;
TRI_aql_node_t* valueNode;
char* name;
// json_t containing the array element name
nameJson = (TRI_json_t*) TRI_AtVector(&json->_value._objects, i);
assert(nameJson);
assert(nameJson->_value._string.data);
name = TRI_RegisterStringAql(context, nameJson->_value._string.data, strlen(nameJson->_value._string.data), false);
if (!name) {
TRI_SetErrorContextAql(context, TRI_ERROR_OUT_OF_MEMORY, NULL);
return NULL;
}
// json_t containing the array element value
valueJson = (TRI_json_t*) TRI_AtVector(&json->_value._objects, i + 1);
assert(valueJson);
valueNode = TRI_JsonNodeAql(context, valueJson);
if (!valueNode) {
TRI_SetErrorContextAql(context, TRI_ERROR_OUT_OF_MEMORY, NULL);
return NULL;
}
member = TRI_CreateNodeArrayElementAql(context, name, valueNode);
if (member) {
TRI_PushBackVectorPointer(&node->_members, (void*) member);
}
else {
TRI_SetErrorContextAql(context, TRI_ERROR_OUT_OF_MEMORY, NULL);
return NULL;
}
}
break;
}
}
if (!node) {
TRI_SetErrorContextAql(context, TRI_ERROR_OUT_OF_MEMORY, NULL);
}
return node;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief convert a value node to its Javascript representation
////////////////////////////////////////////////////////////////////////////////
bool TRI_ValueJavascriptAql (TRI_string_buffer_t* const buffer,
const TRI_aql_value_t* const value,
const TRI_aql_value_type_e type) {
switch (type) {
case AQL_TYPE_FAIL:
return (TRI_AppendStringStringBuffer(buffer, "fail") == TRI_ERROR_NO_ERROR);
case AQL_TYPE_NULL:
return (TRI_AppendStringStringBuffer(buffer, "null") == TRI_ERROR_NO_ERROR);
case AQL_TYPE_BOOL:
return (TRI_AppendStringStringBuffer(buffer, value->_value._bool ? "true" : "false") == TRI_ERROR_NO_ERROR);
case AQL_TYPE_INT:
return (TRI_AppendInt64StringBuffer(buffer, value->_value._int) == TRI_ERROR_NO_ERROR);
case AQL_TYPE_DOUBLE:
return (TRI_AppendDoubleStringBuffer(buffer, value->_value._double) == TRI_ERROR_NO_ERROR);
case AQL_TYPE_STRING: {
char* escapedString;
size_t outLength;
if (TRI_AppendCharStringBuffer(buffer, '"') != TRI_ERROR_NO_ERROR) {
return false;
}
escapedString = TRI_EscapeUtf8String(value->_value._string, strlen(value->_value._string), false, &outLength);
if (!escapedString) {
return false;
}
if (TRI_AppendStringStringBuffer(buffer, escapedString) != TRI_ERROR_NO_ERROR) {
TRI_Free(TRI_UNKNOWN_MEM_ZONE, escapedString);
return false;
}
TRI_Free(TRI_UNKNOWN_MEM_ZONE, escapedString);
return (TRI_AppendCharStringBuffer(buffer, '"') == TRI_ERROR_NO_ERROR);
}
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief convert a node to its Javascript representation
////////////////////////////////////////////////////////////////////////////////
bool TRI_NodeJavascriptAql (TRI_string_buffer_t* const buffer,
const TRI_aql_node_t* const node) {
switch (node->_type) {
case AQL_NODE_VALUE:
return TRI_ValueJavascriptAql(buffer, &node->_value, node->_value._type);
case AQL_NODE_ARRAY_ELEMENT:
if (!TRI_ValueJavascriptAql(buffer, &node->_value, AQL_TYPE_STRING)) {
return false;
}
if (TRI_AppendCharStringBuffer(buffer, ':') != TRI_ERROR_NO_ERROR) {
return false;
}
return TRI_NodeJavascriptAql(buffer, TRI_AQL_NODE_MEMBER(node, 0));
case AQL_NODE_LIST:
if (TRI_AppendCharStringBuffer(buffer, '[') != TRI_ERROR_NO_ERROR) {
return false;
}
if (!AppendListValues(buffer, node)) {
return false;
}
return (TRI_AppendCharStringBuffer(buffer, ']') == TRI_ERROR_NO_ERROR);
case AQL_NODE_ARRAY:
if (TRI_AppendCharStringBuffer(buffer, '{') != TRI_ERROR_NO_ERROR) {
return false;
}
if (!AppendListValues(buffer, node)) {
return false;
}
return (TRI_AppendCharStringBuffer(buffer, '}') == TRI_ERROR_NO_ERROR);
default:
return false;
}
}
////////////////////////////////////////////////////////////////////////////////
/// @}
////////////////////////////////////////////////////////////////////////////////
// Local Variables:
// mode: outline-minor
// outline-regexp: "^\\(/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
// End:
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