| 1 | /* $Id: RTCRestJsonPrimaryCursor.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - C++ REST, RTCRestJsonPrimaryCursor implementation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2018-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #define LOG_GROUP RTLOGGROUP_REST
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| 32 | #include <iprt/cpp/restbase.h>
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| 33 |
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| 34 | #include <iprt/errcore.h>
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| 35 | #include <iprt/string.h>
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| 36 |
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| 37 |
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| 38 | char *RTCRestJsonPrimaryCursor::getPath(RTCRestJsonCursor const &a_rCursor, char *pszDst, size_t cbDst) const RT_NOEXCEPT
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| 39 | {
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| 40 | AssertReturn(cbDst > 0, NULL);
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| 41 |
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| 42 | /*
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| 43 | * To avoid using recursion, we need to first do a pass to figure sizes
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| 44 | * and depth. To keep things simple, with the exception of the top name
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| 45 | * we only copy out full names.
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| 46 | */
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| 47 | /* Special case: Insufficient space for the top name. */
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| 48 | size_t const cchTopName = strlen(a_rCursor.m_pszName);
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| 49 | if (cchTopName >= cbDst)
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| 50 | {
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| 51 | memcpy(pszDst, a_rCursor.m_pszName, cbDst - 1);
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| 52 | pszDst[cbDst - 1] = '\0';
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| 53 | }
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| 54 | else
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| 55 | {
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| 56 | /* Determin how deep we should go and the resulting length. */
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| 57 | size_t iMaxDepth = 0;
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| 58 | size_t cchTotal = cchTopName;
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| 59 | for (RTCRestJsonCursor const *pCur = a_rCursor.m_pParent; pCur; pCur = pCur->m_pParent)
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| 60 | {
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| 61 | size_t const cchName = strlen(pCur->m_pszName);
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| 62 | size_t cchNewTotal = cchName + 1 + cchTotal;
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| 63 | if (cchNewTotal < cbDst)
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| 64 | cchTotal = cchNewTotal;
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| 65 | else
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| 66 | break;
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| 67 | iMaxDepth++;
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| 68 | }
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| 69 |
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| 70 | /* Produce the string, in reverse. */
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| 71 | char *psz = &pszDst[cchTotal];
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| 72 | *psz = '\0';
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| 73 | psz -= cchTopName;
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| 74 | memcpy(psz, a_rCursor.m_pszName, cchTopName);
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| 75 | for (RTCRestJsonCursor const *pCur = a_rCursor.m_pParent; pCur && iMaxDepth > 0; pCur = pCur->m_pParent)
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| 76 | {
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| 77 | psz -= 1;
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| 78 | *psz = '.';
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| 79 |
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| 80 | size_t const cchName = strlen(pCur->m_pszName);
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| 81 | psz -= cchName;
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| 82 | memcpy(psz, pCur->m_pszName, cchName);
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| 83 |
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| 84 | iMaxDepth--;
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| 85 | }
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| 86 | Assert(psz == pszDst);
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| 87 | }
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| 88 | return pszDst;
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| 89 | }
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| 90 |
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| 91 |
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| 92 | int RTCRestJsonPrimaryCursor::addError(RTCRestJsonCursor const &a_rCursor, int a_rc, const char *a_pszFormat, ...) RT_NOEXCEPT
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| 93 | {
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| 94 | va_list va;
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| 95 | va_start(va, a_pszFormat);
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| 96 | char szPath[128];
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| 97 | a_rc = RTErrInfoAddF(m_pErrInfo, a_rc, "%s: %N\n", getPath(a_rCursor, szPath, sizeof(szPath)), a_pszFormat, &va);
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| 98 | va_end(va);
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| 99 | return a_rc;
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| 100 | }
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| 101 |
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| 102 |
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| 103 | int RTCRestJsonPrimaryCursor::unknownField(RTCRestJsonCursor const &a_rCursor) RT_NOEXCEPT
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| 104 | {
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| 105 | char szPath[128];
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| 106 | return RTErrInfoAddF(m_pErrInfo, VWRN_NOT_FOUND, "%s: unknown field (type %s)\n",
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| 107 | getPath(a_rCursor, szPath, sizeof(szPath)),
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| 108 | RTJsonValueTypeName(RTJsonValueGetType(a_rCursor.m_hValue)));
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| 109 | }
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| 110 |
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