ixml.cpp

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/**************************************************************************
 *
 * Copyright (c) 2000-2003 Intel Corporation
 * All rights reserved.
 * Copyright (C) 2022 GPL 3 and higher by Ingo Höft,  <Ingo@Hoeft-online.de>
 * Redistribution only with this Copyright remark. Last modified: 2026-03-31
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
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 * may be used to endorse or promote products derived from this software
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// Last compare with ./Pupnp source file, based on 2026-03-16, ver 1.14.30
 
#include <ixml/ixmldebug.hpp>
// #include "ixmlmembuf.hpp"
#include <ixml/ixmlparser.hpp>
 
// #include <stdlib.h> /* for free() */
#include <cstring>
 
// #include "posix_overwrites.hpp" // IWYU pragma: keep
 
static void copy_with_escape(
    ixml_membuf* buf,
    const char* p) {
    size_t i;
    size_t plen;
 
    if (!p) {
        return;
    }
    plen = strlen(p);
    for (i = (size_t)0; i < plen; ++i) {
        switch (p[i]) {
        case '<':
            ixml_membuf_append_str(buf, "&lt;");
            break;
        case '>':
            ixml_membuf_append_str(buf, "&gt;");
            break;
        case '&':
            ixml_membuf_append_str(buf, "&amp;");
            break;
        case '\'':
            ixml_membuf_append_str(buf, "&apos;");
            break;
        case '\"':
            ixml_membuf_append_str(buf, "&quot;");
            break;
        default:
            ixml_membuf_append(buf, &p[i]);
            break;
        }
    }
}
 
static void ixmlPrintDomTreeRecursive(
    IXML_Node* nodeptr,
    ixml_membuf* buf) {
    const char* nodeName = NULL;
    const char* nodeValue = NULL;
    IXML_Node *child = NULL, *sibling = NULL;
 
    if (nodeptr) {
        nodeName = (const char*)ixmlNode_getNodeName(nodeptr);
        nodeValue = ixmlNode_getNodeValue(nodeptr);
 
        switch (ixmlNode_getNodeType(nodeptr)) {
        case eTEXT_NODE:
            copy_with_escape(buf, nodeValue);
            break;
 
        case eCDATA_SECTION_NODE:
            ixml_membuf_append_str(buf, "<![CDATA[");
            ixml_membuf_append_str(buf, nodeValue);
            ixml_membuf_append_str(buf, "]]>");
            break;
 
        case ePROCESSING_INSTRUCTION_NODE:
            ixml_membuf_append_str(buf, "<?");
            ixml_membuf_append_str(buf, nodeName);
            ixml_membuf_append_str(buf, " ");
            copy_with_escape(buf, nodeValue);
            ixml_membuf_append_str(buf, "?>\n");
            break;
 
        case eDOCUMENT_NODE:
            ixmlPrintDomTreeRecursive(ixmlNode_getFirstChild(nodeptr), buf);
            break;
 
        case eATTRIBUTE_NODE:
            ixml_membuf_append_str(buf, nodeName);
            ixml_membuf_append_str(buf, "=\"");
            copy_with_escape(buf, nodeValue);
            ixml_membuf_append_str(buf, "\"");
            if (nodeptr->nextSibling) {
                ixml_membuf_append_str(buf, " ");
                ixmlPrintDomTreeRecursive(nodeptr->nextSibling, buf);
            }
            break;
 
        case eELEMENT_NODE:
            ixml_membuf_append_str(buf, "<");
            ixml_membuf_append_str(buf, nodeName);
            if (nodeptr->firstAttr) {
                ixml_membuf_append_str(buf, " ");
                ixmlPrintDomTreeRecursive(nodeptr->firstAttr, buf);
            }
            child = ixmlNode_getFirstChild(nodeptr);
            if (child && ixmlNode_getNodeType(child) == eELEMENT_NODE) {
                ixml_membuf_append_str(buf, ">\r\n");
            } else {
                ixml_membuf_append_str(buf, ">");
            }
            /* output the children */
            ixmlPrintDomTreeRecursive(ixmlNode_getFirstChild(nodeptr), buf);
 
            /* Done with children.  Output the end tag. */
            ixml_membuf_append_str(buf, "</");
            ixml_membuf_append_str(buf, nodeName);
 
            sibling = ixmlNode_getNextSibling(nodeptr);
            if (sibling && ixmlNode_getNodeType(sibling) == eTEXT_NODE) {
                ixml_membuf_append_str(buf, ">");
            } else {
                ixml_membuf_append_str(buf, ">\r\n");
            }
            ixmlPrintDomTreeRecursive(ixmlNode_getNextSibling(nodeptr), buf);
            break;
 
        default:
            IxmlPrintf(__FILE__, __LINE__, "ixmlPrintDomTreeRecursive",
                       "Warning, unknown node type %d\n",
                       (int)ixmlNode_getNodeType(nodeptr));
            break;
        }
    }
}
 
static void ixmlPrintDomTree(
    IXML_Node* nodeptr,
    ixml_membuf* buf) {
    const char* nodeName = NULL;
    const char* nodeValue = NULL;
    IXML_Node* child = NULL;
 
    if (!nodeptr || !buf) {
        return;
    }
 
    nodeName = (const char*)ixmlNode_getNodeName(nodeptr);
    nodeValue = ixmlNode_getNodeValue(nodeptr);
    switch (ixmlNode_getNodeType(nodeptr)) {
    case eTEXT_NODE:
    case eCDATA_SECTION_NODE:
    case ePROCESSING_INSTRUCTION_NODE:
    case eDOCUMENT_NODE:
        ixmlPrintDomTreeRecursive(nodeptr, buf);
        break;
 
    case eATTRIBUTE_NODE:
        ixml_membuf_append_str(buf, nodeName);
        ixml_membuf_append_str(buf, "=\"");
        copy_with_escape(buf, nodeValue);
        ixml_membuf_append_str(buf, "\"");
        break;
 
    case eELEMENT_NODE:
        ixml_membuf_append_str(buf, "<");
        ixml_membuf_append_str(buf, nodeName);
        if (nodeptr->firstAttr) {
            ixml_membuf_append_str(buf, " ");
            ixmlPrintDomTreeRecursive(nodeptr->firstAttr, buf);
        }
        child = ixmlNode_getFirstChild(nodeptr);
        if (child && ixmlNode_getNodeType(child) == eELEMENT_NODE) {
            ixml_membuf_append_str(buf, ">\r\n");
        } else {
            ixml_membuf_append_str(buf, ">");
        }
 
        /* output the children */
        ixmlPrintDomTreeRecursive(ixmlNode_getFirstChild(nodeptr), buf);
 
        /* Done with children. Output the end tag. */
        ixml_membuf_append_str(buf, "</");
        ixml_membuf_append_str(buf, nodeName);
        ixml_membuf_append_str(buf, ">\r\n");
        break;
 
    default:
        IxmlPrintf(__FILE__, __LINE__, "ixmlPrintDomTree",
                   "Warning, unknown node type %d\n",
                   (int)ixmlNode_getNodeType(nodeptr));
        break;
    }
}
 
static void ixmlDomTreetoString(
    IXML_Node* nodeptr,
    ixml_membuf* buf) {
    const char* nodeName = NULL;
    const char* nodeValue = NULL;
    IXML_Node* child = NULL;
 
    if (!nodeptr || !buf) {
        return;
    }
 
    nodeName = (const char*)ixmlNode_getNodeName(nodeptr);
    nodeValue = ixmlNode_getNodeValue(nodeptr);
 
    switch (ixmlNode_getNodeType(nodeptr)) {
    case eTEXT_NODE:
    case eCDATA_SECTION_NODE:
    case ePROCESSING_INSTRUCTION_NODE:
    case eDOCUMENT_NODE:
        ixmlPrintDomTreeRecursive(nodeptr, buf);
        break;
 
    case eATTRIBUTE_NODE:
        ixml_membuf_append_str(buf, nodeName);
        ixml_membuf_append_str(buf, "=\"");
        copy_with_escape(buf, nodeValue);
        ixml_membuf_append_str(buf, "\"");
        break;
 
    case eELEMENT_NODE:
        ixml_membuf_append_str(buf, "<");
        ixml_membuf_append_str(buf, nodeName);
        if (nodeptr->firstAttr) {
            ixml_membuf_append_str(buf, " ");
            ixmlPrintDomTreeRecursive(nodeptr->firstAttr, buf);
        }
        child = ixmlNode_getFirstChild(nodeptr);
        if (child && ixmlNode_getNodeType(child) == eELEMENT_NODE) {
            ixml_membuf_append_str(buf, ">");
        } else {
            ixml_membuf_append_str(buf, ">");
        }
 
        /* output the children */
        ixmlPrintDomTreeRecursive(ixmlNode_getFirstChild(nodeptr), buf);
 
        /* Done with children. Output the end tag. */
        ixml_membuf_append_str(buf, "</");
        ixml_membuf_append_str(buf, nodeName);
        ixml_membuf_append_str(buf, ">");
        break;
 
    default:
        IxmlPrintf(__FILE__, __LINE__, "ixmlPrintDomTreeRecursive",
                   "Warning, unknown node type %d\n",
                   (int)ixmlNode_getNodeType(nodeptr));
        break;
    }
}
 
int ixmlLoadDocumentEx(const char* xmlFile, IXML_Document** doc) {
    if (!xmlFile || !doc) {
        return IXML_INVALID_PARAMETER;
    }
 
    return Parser_LoadDocument(doc, xmlFile, 1);
}
 
IXML_Document* ixmlLoadDocument(const char* xmlFile) {
    IXML_Document* doc = NULL;
 
    ixmlLoadDocumentEx(xmlFile, &doc);
 
    return doc;
}
 
DOMString ixmlPrintDocument(IXML_Document* doc) {
    IXML_Node* rootNode = (IXML_Node*)doc;
    ixml_membuf memBuf;
    ixml_membuf* buf = &memBuf;
 
    if (!rootNode) {
        return NULL;
    }
 
    ixml_membuf_init(buf);
    ixml_membuf_append_str(buf, "<?xml version=\"1.0\"?>\r\n");
    ixmlPrintDomTree(rootNode, buf);
 
    return buf->buf;
}
 
DOMString ixmlPrintNode(IXML_Node* node) {
    ixml_membuf memBuf;
    ixml_membuf* buf = &memBuf;
 
    if (!node) {
        return NULL;
    }
 
    ixml_membuf_init(buf);
    ixmlPrintDomTree(node, buf);
 
    return buf->buf;
}
 
DOMString ixmlDocumenttoString(IXML_Document* doc) {
    IXML_Node* rootNode = (IXML_Node*)doc;
    ixml_membuf memBuf;
    ixml_membuf* buf = &memBuf;
 
    if (!rootNode) {
        return NULL;
    }
 
    ixml_membuf_init(buf);
    ixml_membuf_append_str(buf, "<?xml version=\"1.0\"?>\r\n");
    ixmlDomTreetoString(rootNode, buf);
 
    return buf->buf;
}
 
DOMString ixmlNodetoString(IXML_Node* node) {
    ixml_membuf memBuf;
    ixml_membuf* buf = &memBuf;
 
    if (!node) {
        return NULL;
    }
 
    ixml_membuf_init(buf);
    ixmlDomTreetoString(node, buf);
 
    return buf->buf;
}
 
void ixmlRelaxParser(char errorChar) { Parser_setErrorChar(errorChar); }
 
#ifdef IXML_HAVE_SCRIPTSUPPORT
void ixmlSetBeforeFree(IXML_BeforeFreeNode_t hndlr) {
    Parser_setBeforeFree(hndlr);
}
#endif
 
int ixmlParseBufferEx(const char* buffer, IXML_Document** retDoc) {
    if (!buffer || !retDoc) {
        return IXML_INVALID_PARAMETER;
    }
    if (buffer[0] == '\0') {
        return IXML_INVALID_PARAMETER;
    }
 
    return Parser_LoadDocument(retDoc, buffer, 0);
}
 
IXML_Document* ixmlParseBuffer(const char* buffer) {
    IXML_Document* doc = NULL;
 
    ixmlParseBufferEx(buffer, &doc);
 
    return doc;
}
 
DOMString ixmlCloneDOMString(const DOMString src) {
    if (!src) {
        return NULL;
    }
 
    return strdup(src);
}
 
void ixmlFreeDOMString(DOMString buf) {
    if (buf) {
        free(buf);
    }
}