valid.c

SIP（Session Initiation Protocol）是由IETF定义

    }
    table->nb_attributes++;

    /*
     * Link it to the Dtd
     */
    ret->parent = dtd;
    ret->doc = dtd->doc;
    if (dtd->last == NULL) {
	dtd->children = dtd->last = (xmlNodePtr) ret;
    } else {
        dtd->last->next = (xmlNodePtr) ret;
	ret->prev = dtd->last;
	dtd->last = (xmlNodePtr) ret;
    }
    return(ret);
}

/**
 * xmlFreeAttribute:
 * @elem:  An attribute
 *
 * Deallocate the memory used by an attribute definition
 */
void
xmlFreeAttribute(xmlAttributePtr attr) {
    if (attr == NULL) return;
    xmlUnlinkNode((xmlNodePtr) attr);
    if (attr->tree != NULL)
        xmlFreeEnumeration(attr->tree);
    if (attr->elem != NULL)
	xmlFree((xmlChar *) attr->elem);
    if (attr->name != NULL)
	xmlFree((xmlChar *) attr->name);
    if (attr->defaultValue != NULL)
	xmlFree((xmlChar *) attr->defaultValue);
    if (attr->prefix != NULL)
	xmlFree((xmlChar *) attr->prefix);
    memset(attr, -1, sizeof(xmlAttribute));
    xmlFree(attr);
}

/**
 * xmlFreeAttributeTable:
 * @table:  An attribute table
 *
 * Deallocate the memory used by an entities hash table.
 */
void
xmlFreeAttributeTable(xmlAttributeTablePtr table) {
    int i;

    if (table == NULL) return;

    for (i = 0;i < table->nb_attributes;i++) {
        xmlFreeAttribute(table->table[i]);
    }
    xmlFree(table->table);
    xmlFree(table);
}

/**
 * xmlCopyAttributeTable:
 * @table:  An attribute table
 *
 * Build a copy of an attribute table.
 * 
 * Returns the new xmlAttributeTablePtr or NULL in case of error.
 */
xmlAttributeTablePtr
xmlCopyAttributeTable(xmlAttributeTablePtr table) {
    xmlAttributeTablePtr ret;
    xmlAttributePtr cur, attr;
    int i;

    ret = (xmlAttributeTablePtr) xmlMalloc(sizeof(xmlAttributeTable));
    if (ret == NULL) {
        fprintf(stderr, "xmlCopyAttributeTable: out of memory !\n");
	return(NULL);
    }
    ret->table = (xmlAttributePtr *) xmlMalloc(table->max_attributes *
                                          sizeof(xmlAttributePtr));
    if (ret->table == NULL) {
        fprintf(stderr, "xmlCopyAttributeTable: out of memory !\n");
	xmlFree(ret);
	return(NULL);
    }
    ret->max_attributes = table->max_attributes;
    ret->nb_attributes = table->nb_attributes;
    for (i = 0;i < ret->nb_attributes;i++) {
	attr = table->table[i];
	cur = (xmlAttributePtr) xmlMalloc(sizeof(xmlAttribute));
	if (cur == NULL) {
	    fprintf(stderr, "xmlCopyAttributeTable: out of memory !\n");
	    xmlFree(ret);
	    xmlFree(ret->table);
	    return(NULL);
	}
	memset(cur, 0, sizeof(xmlAttribute));
	/* !!! cur->type = XML_ATTRIBUTE_DECL; */
	ret->table[i] = cur;
	cur->atype = attr->atype;
	cur->def = attr->def;
	cur->tree = xmlCopyEnumeration(attr->tree);
	if (attr->elem != NULL)
	    cur->elem = xmlStrdup(attr->elem);
	if (attr->name != NULL)
	    cur->name = xmlStrdup(attr->name);
	if (attr->defaultValue != NULL)
	    cur->defaultValue = xmlStrdup(attr->defaultValue);
	/* NEED to rebuild the next chain !!!!!! */
    }
    return(ret);
}

/**
 * xmlDumpAttributeDecl:
 * @buf:  the XML buffer output
 * @attr:  An attribute declaration
 *
 * This will dump the content of the attribute declaration as an XML
 * DTD definition
 */
void
xmlDumpAttributeDecl(xmlBufferPtr buf, xmlAttributePtr attr) {
    xmlBufferWriteChar(buf, "<!ATTLIST ");
    xmlBufferWriteCHAR(buf, attr->elem);
    xmlBufferWriteChar(buf, " ");
    xmlBufferWriteCHAR(buf, attr->name);
    switch (attr->atype) {
	case XML_ATTRIBUTE_CDATA:
	    xmlBufferWriteChar(buf, " CDATA");
	    break;
	case XML_ATTRIBUTE_ID:
	    xmlBufferWriteChar(buf, " ID");
	    break;
	case XML_ATTRIBUTE_IDREF:
	    xmlBufferWriteChar(buf, " IDREF");
	    break;
	case XML_ATTRIBUTE_IDREFS:
	    xmlBufferWriteChar(buf, " IDREFS");
	    break;
	case XML_ATTRIBUTE_ENTITY:
	    xmlBufferWriteChar(buf, " ENTITY");
	    break;
	case XML_ATTRIBUTE_ENTITIES:
	    xmlBufferWriteChar(buf, " ENTITIES");
	    break;
	case XML_ATTRIBUTE_NMTOKEN:
	    xmlBufferWriteChar(buf, " NMTOKEN");
	    break;
	case XML_ATTRIBUTE_NMTOKENS:
	    xmlBufferWriteChar(buf, " NMTOKENS");
	    break;
	case XML_ATTRIBUTE_ENUMERATION:
	    xmlBufferWriteChar(buf, " (");
	    xmlDumpEnumeration(buf, attr->tree);
	    break;
	case XML_ATTRIBUTE_NOTATION:
	    xmlBufferWriteChar(buf, " NOTATION (");
	    xmlDumpEnumeration(buf, attr->tree);
	    break;
	default:
	    fprintf(stderr,
		"xmlDumpAttributeTable: internal: unknown type %d\n",
		    attr->atype);
    }
    switch (attr->def) {
	case XML_ATTRIBUTE_NONE:
	    break;
	case XML_ATTRIBUTE_REQUIRED:
	    xmlBufferWriteChar(buf, " #REQUIRED");
	    break;
	case XML_ATTRIBUTE_IMPLIED:
	    xmlBufferWriteChar(buf, " #IMPLIED");
	    break;
	case XML_ATTRIBUTE_FIXED:
	    xmlBufferWriteChar(buf, " #FIXED");
	    break;
	default:
	    fprintf(stderr,
		"xmlDumpAttributeTable: internal: unknown default %d\n",
		    attr->def);
    }
    if (attr->defaultValue != NULL) {
	xmlBufferWriteChar(buf, " ");
	xmlBufferWriteQuotedString(buf, attr->defaultValue);
    }
    xmlBufferWriteChar(buf, ">\n");
}

/**
 * xmlDumpAttributeTable:
 * @buf:  the XML buffer output
 * @table:  An attribute table
 *
 * This will dump the content of the attribute table as an XML DTD definition
 */
void
xmlDumpAttributeTable(xmlBufferPtr buf, xmlAttributeTablePtr table) {
    int i;
    xmlAttributePtr cur;

    if (table == NULL) return;

    for (i = 0;i < table->nb_attributes;i++) {
        cur = table->table[i];
	xmlDumpAttributeDecl(buf, cur);
    }
}

/************************************************************************
 *									*
 *				NOTATIONs				*
 *									*
 ************************************************************************/
/**
 * xmlCreateNotationTable:
 *
 * create and initialize an empty notation hash table.
 *
 * Returns the xmlNotationTablePtr just created or NULL in case
 *                of error.
 */
xmlNotationTablePtr
xmlCreateNotationTable(void) {
    xmlNotationTablePtr ret;

    ret = (xmlNotationTablePtr) 
         xmlMalloc(sizeof(xmlNotationTable));
    if (ret == NULL) {
        fprintf(stderr, "xmlCreateNotationTable : xmlMalloc(%ld) failed\n",
	        (long)sizeof(xmlNotationTable));
        return(NULL);
    }
    ret->max_notations = XML_MIN_NOTATION_TABLE;
    ret->nb_notations = 0;
    ret->table = (xmlNotationPtr *) 
         xmlMalloc(ret->max_notations * sizeof(xmlNotationPtr));
    if (ret == NULL) {
        fprintf(stderr, "xmlCreateNotationTable : xmlMalloc(%ld) failed\n",
	        ret->max_notations * (long)sizeof(xmlNotation));
	xmlFree(ret);
        return(NULL);
    }
    return(ret);
}


/**
 * xmlAddNotationDecl:
 * @dtd:  pointer to the DTD
 * @ctxt:  the validation context
 * @name:  the entity name
 * @PublicID:  the public identifier or NULL
 * @SystemID:  the system identifier or NULL
 *
 * Register a new notation declaration
 *
 * Returns NULL if not, othervise the entity
 */
xmlNotationPtr
xmlAddNotationDecl(xmlValidCtxtPtr ctxt, xmlDtdPtr dtd, const xmlChar *name,
                   const xmlChar *PublicID, const xmlChar *SystemID) {
    xmlNotationPtr ret, cur;
    xmlNotationTablePtr table;
    int i;

    if (dtd == NULL) {
        fprintf(stderr, "xmlAddNotationDecl: dtd == NULL\n");
	return(NULL);
    }
    if (name == NULL) {
        fprintf(stderr, "xmlAddNotationDecl: name == NULL\n");
	return(NULL);
    }
    if ((PublicID == NULL) && (SystemID == NULL)) {
        fprintf(stderr, "xmlAddNotationDecl: no PUBLIC ID nor SYSTEM ID\n");
    }

    /*
     * Create the Notation table if needed.
     */
    table = dtd->notations;
    if (table == NULL) 
        table = dtd->notations = xmlCreateNotationTable();
    if (table == NULL) {
	fprintf(stderr, "xmlAddNotationDecl: Table creation failed!\n");
        return(NULL);
    }

    /*
     * Validity Check:
     * Search the DTD for previous declarations of the ATTLIST
     */
    for (i = 0;i < table->nb_notations;i++) {
        cur = table->table[i];
	if (!xmlStrcmp(cur->name, name)) {
	    /*
	     * The notation is already defined in this Dtd.
	     */
	    fprintf(stderr,
		    "xmlAddNotationDecl: %s already defined\n", name);
	}
    }

    /*
     * Grow the table, if needed.
     */
    if (table->nb_notations >= table->max_notations) {
        /*
	 * need more notations.
	 */
	table->max_notations *= 2;
	table->table = (xmlNotationPtr *) 
	    xmlRealloc(table->table, table->max_notations *
	            sizeof(xmlNotationPtr));
	if (table->table == NULL) {
	    fprintf(stderr, "xmlAddNotationDecl: out of memory\n");
	    return(NULL);
	}
    }
    ret = (xmlNotationPtr) xmlMalloc(sizeof(xmlNotation));
    if (ret == NULL) {
	fprintf(stderr, "xmlAddNotationDecl: out of memory\n");
	return(NULL);
    }
    memset(ret, 0, sizeof(xmlNotation));
    table->table[table->nb_notations] = ret;

    /*
     * fill the structure.
     */
    ret->name = xmlStrdup(name);
    if (SystemID != NULL)
        ret->SystemID = xmlStrdup(SystemID);
    if (PublicID != NULL)
        ret->PublicID = xmlStrdup(PublicID);
    table->nb_notations++;

    return(ret);
}

/**
 * xmlFreeNotation:
 * @not:  A notation
 *
 * Deallocate the memory used by an notation definition
 */
void
xmlFreeNotation(xmlNotationPtr nota) {
    if (nota == NULL) return;
    if (nota->name != NULL)
	xmlFree((xmlChar *) nota->name);
    if (nota->PublicID != NULL)
	xmlFree((xmlChar *) nota->PublicID);
    if (nota->SystemID != NULL)
	xmlFree((xmlChar *) nota->SystemID);
    memset(nota, -1, sizeof(xmlNotation));
    xmlFree(nota);
}

/**
 * xmlFreeNotationTable:
 * @table:  An notation table
 *
 * Deallocate the memory used by an entities hash table.
 */
void
xmlFreeNotationTable(xmlNotationTablePtr table) {
    int i;

    if (table == NULL) return;

    for (i = 0;i < table->nb_notations;i++) {
        xmlFreeNotation(table->table[i]);
    }
    xmlFree(table->table);
    xmlFree(table);
}

/**
 * xmlCopyNotationTable:
 * @table:  A notation table
 *
 * Build a copy of a notation table.
 * 
 * Returns the new xmlNotationTablePtr or NULL in case of error.
 */
xmlNotationTablePtr
xmlCopyNotationTable(xmlNotationTablePtr table) {
    xmlNotationTablePtr ret;
    xmlNotationPtr cur, nota;
    int i;

    ret = (xmlNotationTablePtr) xmlMalloc(sizeof(xmlNotationTable));
    if (ret == NULL) {
        fprintf(stderr, "xmlCopyNotationTable: out of memory !\n");
	return(NULL);
    }
    ret->table = (xmlNotationPtr *) xmlMalloc(table->max_notations *
                                         sizeof(xmlNotationPtr));
    if (ret->table == NULL) {
        fprintf(stderr, "xmlCopyNotationTable: out of memory !\n");
	xmlFree(ret);
	return(NULL);
    }
    ret->max_notations = table->max_notations;
    ret->nb_notations = table->nb_notations;
    for (i = 0;i < ret->nb_notations;i++) {
	cur = (xmlNotationPtr) xmlMalloc(sizeof(xmlNotation));
	if (cur == NULL) {
	    fprintf(stderr, "xmlCopyNotationTable: out of memory !\n");
	    xmlFree(ret);
	    xmlFree(ret->table);
	    return(NULL);
	}
	ret->table[i] = cur;
	nota = table->table[i];
	if (nota->name != NULL)
	    cur->name = xmlStrdup(nota->name);
	else
	    cur->name = NULL;
	if (nota->PublicID != NULL)
	    cur->PublicID = xmlStrdup(nota->PublicID);
	else
	    cur->PublicID = NULL;
	if (nota->SystemID != NULL)
	    cur->SystemID = xmlStrdup(nota->SystemID);
	else
	    cur->SystemID = NULL;
    }
    return(ret);
}

/**
 * xmlDumpNotationDecl:
 * @buf:  the XML buffer output
 * @nota:  A notation declaration
 *
 * This will dump the content the notation declaration as an XML DTD definition
 */
void
xmlDumpNotationDecl(xmlBufferPtr buf, xmlNotationPtr nota) {
    xmlBufferWriteChar(buf, "<!NOTATION ");
    xmlBufferWriteCHAR(buf, nota->name);
    if (nota->PublicID != NULL) {
	xmlBufferWriteChar(buf, " PUBLIC ");
	xmlBufferWriteQuotedString(buf, nota->PublicID);
	if (nota->SystemID != NULL) {
	    xmlBufferWriteChar(buf, " ");
	    xmlBufferWriteCHAR(buf, nota->SystemID);
	}
    } else {
	xmlBufferWriteChar(buf, " SYSTEM ");
	xmlBufferWriteCHAR(buf, nota->SystemID);
    }
    xmlBufferWriteChar(buf, " >\n");
}

/**
 * xmlDumpNotationTable:
 * @buf:  the XML buffer output
 * @table:  A notation table
 *
 * This will dump the content of the notation table as an XML DTD definition
 */
void
xmlDumpNotationTable(xmlBufferPtr buf, xmlNotationTablePtr table) {
    int i;
    xmlNotationPtr cur;

    if (table == NULL) return;

    for (i = 0;i < table->nb_notations;i++) {
        cur = table->table[i];
	xmlDumpNotationDecl(buf, cur);
    }
}

/************************************************************************
 *									*
 *				IDs					*
 *									*
 ************************************************************************/
/**
 * xmlCreateIDTable:
 *
 * create and initialize an empty id hash table.
 *
 * Returns the xmlIDTablePtr just created or NULL in case
 *                of error.
 */
xmlIDTablePtr
xmlCreateIDTable(void) {
    xmlIDTablePtr ret;

    ret = (xmlIDTablePtr) 
         xmlMalloc(sizeof(xmlIDTable));
    if (ret == NULL) {
        fprintf(stderr, "xmlCreateIDTable : xmlMalloc(%ld) failed\n",
	        (long)sizeof(xmlIDTable));
        return(NULL);
    }
    ret->max_ids = XML_MIN_NOTATION_TABLE;
    ret->nb_ids = 0;
    ret->table = (xmlIDPtr *) 
         xmlMalloc(ret->max_ids * sizeof(xmlIDPtr));
    if (ret == NULL) {
        fprintf(stderr, "xmlCreateIDTable : xmlMalloc(%ld) failed\n",
	        ret->max_ids * (long)sizeof(xmlID));
	xmlFree(ret);
        return(NULL);
    }
    return(ret);
}