| 1 | /* $Id: RTCRestJsonPrimaryCursor.cpp 96407 2022-08-22 17:43:14Z 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) 2018-2022 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #define LOG_GROUP RTLOGGROUP_REST
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| 42 | #include <iprt/cpp/restbase.h>
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| 43 |
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| 44 | #include <iprt/errcore.h>
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| 45 | #include <iprt/string.h>
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| 46 |
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| 47 |
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| 48 | char *RTCRestJsonPrimaryCursor::getPath(RTCRestJsonCursor const &a_rCursor, char *pszDst, size_t cbDst) const RT_NOEXCEPT
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| 49 | {
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| 50 | AssertReturn(cbDst > 0, NULL);
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| 51 |
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| 52 | /*
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| 53 | * To avoid using recursion, we need to first do a pass to figure sizes
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| 54 | * and depth. To keep things simple, with the exception of the top name
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| 55 | * we only copy out full names.
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| 56 | */
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| 57 | /* Special case: Insufficient space for the top name. */
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| 58 | size_t const cchTopName = strlen(a_rCursor.m_pszName);
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| 59 | if (cchTopName >= cbDst)
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| 60 | {
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| 61 | memcpy(pszDst, a_rCursor.m_pszName, cbDst - 1);
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| 62 | pszDst[cbDst - 1] = '\0';
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| 63 | }
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| 64 | else
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| 65 | {
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| 66 | /* Determin how deep we should go and the resulting length. */
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| 67 | size_t iMaxDepth = 0;
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| 68 | size_t cchTotal = cchTopName;
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| 69 | for (RTCRestJsonCursor const *pCur = a_rCursor.m_pParent; pCur; pCur = pCur->m_pParent)
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| 70 | {
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| 71 | size_t const cchName = strlen(pCur->m_pszName);
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| 72 | size_t cchNewTotal = cchName + 1 + cchTotal;
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| 73 | if (cchNewTotal < cbDst)
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| 74 | cchTotal = cchNewTotal;
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| 75 | else
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| 76 | break;
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| 77 | iMaxDepth++;
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| 78 | }
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| 79 |
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| 80 | /* Produce the string, in reverse. */
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| 81 | char *psz = &pszDst[cchTotal];
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| 82 | *psz = '\0';
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| 83 | psz -= cchTopName;
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| 84 | memcpy(psz, a_rCursor.m_pszName, cchTopName);
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| 85 | for (RTCRestJsonCursor const *pCur = a_rCursor.m_pParent; pCur && iMaxDepth > 0; pCur = pCur->m_pParent)
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| 86 | {
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| 87 | psz -= 1;
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| 88 | *psz = '.';
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| 89 |
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| 90 | size_t const cchName = strlen(pCur->m_pszName);
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| 91 | psz -= cchName;
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| 92 | memcpy(psz, pCur->m_pszName, cchName);
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| 93 |
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| 94 | iMaxDepth--;
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| 95 | }
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| 96 | Assert(psz == pszDst);
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| 97 | }
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| 98 | return pszDst;
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| 99 | }
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| 100 |
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| 101 |
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| 102 | int RTCRestJsonPrimaryCursor::addError(RTCRestJsonCursor const &a_rCursor, int a_rc, const char *a_pszFormat, ...) RT_NOEXCEPT
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| 103 | {
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| 104 | va_list va;
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| 105 | va_start(va, a_pszFormat);
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| 106 | char szPath[128];
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| 107 | a_rc = RTErrInfoAddF(m_pErrInfo, a_rc, "%s: %N\n", getPath(a_rCursor, szPath, sizeof(szPath)), a_pszFormat, &va);
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| 108 | va_end(va);
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| 109 | return a_rc;
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| 110 | }
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| 111 |
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| 112 |
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| 113 | int RTCRestJsonPrimaryCursor::unknownField(RTCRestJsonCursor const &a_rCursor) RT_NOEXCEPT
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| 114 | {
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| 115 | char szPath[128];
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| 116 | return RTErrInfoAddF(m_pErrInfo, VWRN_NOT_FOUND, "%s: unknown field (type %s)\n",
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| 117 | getPath(a_rCursor, szPath, sizeof(szPath)),
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| 118 | RTJsonValueTypeName(RTJsonValueGetType(a_rCursor.m_hValue)));
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| 119 | }
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| 120 |
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