mirror of https://gitee.com/bigwinds/arangodb
208 lines
6.4 KiB
C
208 lines
6.4 KiB
C
////////////////////////////////////////////////////////////////////////////////
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/// @brief Ahuacatl, errors
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2012 triagens GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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/// @author Copyright 2012, triagens GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "Ahuacatl/ahuacatl-error.h"
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// -----------------------------------------------------------------------------
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// --SECTION-- defines
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Ahuacatl
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief error snippet length
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////////////////////////////////////////////////////////////////////////////////
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#define SNIPPET_LENGTH 32
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////////////////////////////////////////////////////////////////////////////////
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/// @brief error snippet suffix
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////////////////////////////////////////////////////////////////////////////////
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#define SNIPPET_SUFFIX "..."
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup Ahuacatl
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get the error code registered last
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////////////////////////////////////////////////////////////////////////////////
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int TRI_GetErrorCodeAql (const TRI_aql_error_t* const error) {
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assert(error);
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return error->_code;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get the error string registered last
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////////////////////////////////////////////////////////////////////////////////
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char* TRI_GetErrorMessageAql (const TRI_aql_error_t* const error) {
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char* message = NULL;
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char buffer[1024];
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int code;
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assert(error);
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code = TRI_GetErrorCodeAql(error);
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if (!code) {
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return NULL;
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}
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message = error->_message;
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if (!message) {
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return NULL;
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}
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if (error->_data && (NULL != strstr(message, "%s"))) {
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snprintf(buffer, sizeof(buffer), message, error->_data);
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return TRI_DuplicateStringZ(TRI_UNKNOWN_MEM_ZONE, (const char*) &buffer);
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}
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return TRI_DuplicateStringZ(TRI_UNKNOWN_MEM_ZONE, message);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief initialize an error structure
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////////////////////////////////////////////////////////////////////////////////
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void TRI_InitErrorAql (TRI_aql_error_t* const error) {
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assert(error);
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error->_code = 0;
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error->_data = NULL;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief free an error structure, not freeing the pointer
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////////////////////////////////////////////////////////////////////////////////
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void TRI_DestroyErrorAql (TRI_aql_error_t* const error) {
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assert(error);
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if (error->_data) {
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TRI_Free(TRI_UNKNOWN_MEM_ZONE, error->_data);
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}
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief free an error structure
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////////////////////////////////////////////////////////////////////////////////
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void TRI_FreeErrorAql (TRI_aql_error_t* const error) {
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assert(error);
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TRI_DestroyErrorAql(error);
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TRI_Free(TRI_UNKNOWN_MEM_ZONE, error);
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get a formatted query error message
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////////////////////////////////////////////////////////////////////////////////
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char* TRI_GetContextErrorAql (const char* const query, const size_t line, const size_t column) {
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const char* p;
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char* temp;
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char* result;
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char c;
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// note: line numbers reported by bison/flex start at 1, columns start at 0
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size_t offset;
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size_t currentLine = 1;
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size_t currentColumn = 0;
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assert(query);
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p = query;
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while ((c = *p)) {
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if (currentLine > line || (currentLine >= line && currentColumn >= column)) {
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break;
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}
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if (c == '\n') {
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++p;
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++currentLine;
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currentColumn = 0;
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}
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else if (c == '\r') {
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++p;
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++currentLine;
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currentColumn = 0;
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if (*p == '\n') {
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++p;
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}
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}
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else {
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++currentColumn;
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++p;
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}
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}
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// p is pointing at the position in the query the parse error occurred at
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assert(p >= query);
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offset = p - query;
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if (strlen(query) < offset + SNIPPET_LENGTH) {
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return TRI_DuplicateString2Z(TRI_UNKNOWN_MEM_ZONE, query + offset, strlen(query) - offset);
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}
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temp = TRI_DuplicateString2Z(TRI_UNKNOWN_MEM_ZONE, query + offset, SNIPPET_LENGTH);
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if (!temp) {
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// out of memory
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return NULL;
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}
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result = TRI_Concatenate2StringZ(TRI_UNKNOWN_MEM_ZONE, temp, SNIPPET_SUFFIX);
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TRI_FreeString(TRI_UNKNOWN_MEM_ZONE, temp);
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return result;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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