/** Handle start tag */
static
void handle_starttag(
PPOS* ppos
)
{
XML_NODE* node;
char* name;
assert(ppos != NULL);
if ((name = get_name(ppos)) == NULL)
{
xml_error(ppos, "Missing name in tagstart");
ppos->state = STATE_ERROR;
}
else
{
if (NULL == (node = xml_new_node(name, ppos->lineno)))
{
xml_error(ppos, "Can't create new node");
ppos->state = STATE_ERROR;
}
else
{
xml_append_child(top_pstack(ppos), node);
if ( push_pstack(ppos, node) )
ppos->state = STATE_IN_TAG;
else
ppos->state = STATE_ERROR;
}
BMSfreeMemoryArray(&name);
}
}
/**
* nmp_get_node: parse an XML in-memory document and build a tree.
*
* @doc: input, a pointer to document tree
* @xpath: input, addressing parts of an XML document
* @return: the resulting document tree, else NULL
*/
xmlXPathObjectPtr
nmp_get_node(xmlDocPtr doc, const xmlChar *xpath)
{
xmlXPathContextPtr context;
xmlXPathObjectPtr result;
context = xmlXPathNewContext(doc);
if (context == NULL)
{
xml_error("context is NULL\n");
return NULL;
}
result = xmlXPathEvalExpression(xpath, context);
xmlXPathFreeContext(context);
if (result == NULL)
{
xml_error("xmlXPathEvalExpression return NULL\n");
return NULL;
}
if (xmlXPathNodeSetIsEmpty(result->nodesetval))
{
xmlXPathFreeObject(result);
xml_error("nodeset is empty\n");
return NULL;
}
return result;
}
// Attempt to parse the content of the node as a bounded integer
// returning the result or throwing.
long parse_integer(xml_node<>* node,
std::string description,
long min_value,
long max_value)
{
// Node must be non-NULL - caller should check for this prior to calling
// this method.
assert(node != NULL);
const char* nptr = node->value();
char* endptr = NULL;
long int n = strtol(nptr, &endptr, 10);
if ((*nptr == '\0') || (*endptr != '\0'))
{
throw xml_error("Can't parse " + description + " as integer");
}
if ((n < min_value) || (n > max_value))
{
throw xml_error(description + " out of allowable range " +
std::to_string(min_value) + ".." + std::to_string(max_value));
}
return n;
}
bool is_valid() {
if (!m_type)
throw xml_error("Missing 'type' attribute in Relation member");
if (!m_ref)
throw xml_error("Missing 'ref' attribute in Relation member");
return (m_ref && m_type);
}
/**
* nmp_parse_xml: process XML document tree
*
* @doc: iutput, XML document tree
* @seq: input, sequence of message
* @return: succeed NmpMsgInfo, else NULL
*/
NmpMsgInfo *
nmp_parse_xml(NmpCmdType *self, xmlDocPtr doc, unsigned int seq)
{
xmlNodePtr cur;
char *cmd;
char msg_id[MAX_CMD_ID_LEN]={0};
NmpParseXml parse_xml;
NmpMsgInfo *sys_msg;
int i;
cur = xmlDocGetRootElement(doc); //确定文档根元素
if (cur == NULL)
{
xml_error("empty document\n");
return NULL;
}
while ( cur && xmlIsBlankNode ( cur ) )
{
cur = cur->next;
}
while (cur != NULL)
{
if (!xmlStrcmp(cur->name, (const xmlChar *) "message"))
{
cmd = (char *)xmlGetProp(cur, (const xmlChar *)"type");
xml_error("1---parse cmd =%s\n",cmd);
if (!cmd)
{
return NULL;
}
msg_id[MAX_CMD_ID_LEN - 1] = 0;
strncpy(msg_id, cmd, MAX_CMD_ID_LEN - 1);
xmlFree(cmd);
for (i = 0; i < CMD_TYPE_COUNTS(self); i++)
{
if (!CMD_CMP(msg_id,GET_CMD_BYINDEX(self,i)))
continue;
parse_xml = GET_PARSE_XML_BYINDEX(self,i);
sys_msg = (*parse_xml)(doc, cur, msg_id); // invoke function to parse
return sys_msg;
}
}
cur = cur->next;
while ( cur && xmlIsBlankNode ( cur ) )
{
cur = cur->next;
}
}
xml_error(" message not exists \n");
return NULL;
}
/* OS_ReadXML v0.1
* Read a XML file and generate the necessary structs.
*/
int OS_ReadXML(const char *file, OS_XML *_lxml)
{
int r;
unsigned int i;
FILE *fp;
/* init xml strcuture */
_lxml->cur = 0;
_lxml->fol = 0;
_lxml->el = NULL;
_lxml->ct = NULL;
_lxml->tp = NULL;
_lxml->rl = NULL;
_lxml->ck = NULL;
_lxml->ln = NULL;
_lxml->err_line = 0;
memset(_lxml->err,'\0',XML_ERR_LENGTH);
fp = fopen(file,"r");
if(!fp)
{
xml_error(_lxml, "XMLERR: File '%s' not found.",file);
return(-2);
}
/* Zeroing the line */
_line = 1;
if((r = _ReadElem(fp,0,_lxml)) < 0) /* First position */
{
if(r != LEOF)
{
fclose(fp);
return(-1);
}
}
for(i=0;i<_lxml->cur;i++)
{
if(_lxml->ck[i] == 0)
{
xml_error(_lxml,"XMLERR: Element '%s' not closed.", _lxml->el[i]);
fclose(fp);
return(-1);
}
}
fclose(fp);
return(0);
}
void
prepare_xml_file (char *filename)
{
int
rc;
rc = xml_load_file (& xml_root, PATH, filename, FALSE);
if (rc == XML_NOERROR)
{
xml_source = xml_first_child (xml_root);
if (xml_source)
{
xml_put_attr (xml_switches, "filename", filename);
xml_put_attr (xml_switches, "template", "1");
}
else
xml_free (xml_root);
}
else
{
coprintf ("%s E: Error processing %s...", me, filename);
coprintf (xml_error ());
raise_exception (anomaly_event);
}
}
/**
* nmp_create_xml: generate XML docment tree according to command type and
* its parameter
*
* @doc: output, a pointer to document tree
* @sys_msg: input, struct, system message information
* @return: succeed 0, else -1
*/
int
nmp_create_xml(NmpCmdType *self, xmlDocPtr doc, NmpMsgInfo *sys_msg)
{
NmpCreateXml create_xml;
int i,ret;
for (i = 0; i < CMD_TYPE_COUNTS(self); i++)
{
if (!CMD_CMP(sys_msg->msg_id,GET_CMD_BYINDEX(self,i)))
continue;
create_xml = GET_CREATE_XML_BYINDEX(self,i);
if(create_xml)
{
ret = (*create_xml)(doc, sys_msg);
if(ret < 0)
{
xml_error("create xml error, no:%d \n", ret);
return ret;
}
}
else
return -E_NOXMLFUN;
return 0;
}
return -E_NOXMLFUN;
}
/** Skip comment
*
* Return FALSE if an error occurs.
*/
static
int do_comment(
PPOS* ppos
)
{
int result = TRUE;
int c;
int state = 0;
assert(ppos != NULL);
for(;;)
{
c = getsymbol(ppos);
if (c == EOF)
break;
if ((c == '>') && (state >= 2))
break;
state = (c == '-') ? state + 1 : 0;
}
if (c == EOF)
{
xml_error(ppos, "Unexpected EOF in comment");
result = FALSE;
}
return result;
}
/** remove top element from stack and deletes it
*
* TRUE if ok, FALSE otherwise
*/
static
XML_Bool pop_pstack(
PPOS* ppos /**< input stream position */
)
{
PSTACK* p;
int result;
assert(ppos != NULL);
if (ppos->top == NULL)
{
xml_error(ppos, "Stack underflow");
result = FALSE;
}
else
{
result = TRUE;
p = ppos->top;
ppos->top = p->next;
debugMessage("Poping %s\n", p->node->name);
BMSfreeMemory(&p);
}
return result;
}
/** Parse input stream */
static
XML_Bool xml_parse(
PPOS* ppos /**< input stream position */
)
{
XML_Bool ok = TRUE;
while (ok)
{
debugMessage("state=%d\n", ppos->state);
switch (ppos->state)
{
case STATE_BEFORE :
proc_before(ppos);
break;
case STATE_IN_TAG :
proc_in_tag(ppos);
break;
case STATE_PCDATA :
proc_pcdata(ppos);
break;
case STATE_EOF :
ok = FALSE;
break;
case STATE_ERROR :
ok = FALSE;
break;
default :
xml_error(ppos, "Internal Error, illegal state");
ok = FALSE;
}
}
return (ppos->state == STATE_EOF);
}
/** Read the value of an attribute from the input stream.
*
* The value has to be between two " or ' (the other character is then valid as well). The function
* returns a pointer to allocated memory containing the value or it returns NULL in case of an
* error.
*/
static
char* get_attrval(
PPOS* ppos
)
{
char* attr = NULL;
int c;
int stop;
size_t len = 0;
size_t size = 0;
assert(ppos != NULL);
/* The following is not allowed according to the specification (the value has to be directly
* after the equation sign). */
c = skip_space(ppos);
if ((c != '"') && (c != '\''))
{
xml_error(ppos, "Atribute value does not start with \" or \'");
return NULL;
}
stop = c;
for(;;)
{
if (len == size)
{
size += ATTR_EXT_SIZE;
if ( attr == NULL )
{
ALLOC_ABORT( BMSallocMemoryArray(&attr, size) );
}
else
{
ALLOC_ABORT( BMSreallocMemoryArray(&attr, size) );
}
}
assert(attr != NULL);
assert(size > len);
c = getsymbol(ppos);
if ((c == stop) || (c == EOF))
break;
attr[len++] = (char)c;
}
if (c != EOF)
attr[len] = '\0';
else
{
BMSfreeMemoryArray(&attr);
attr = NULL;
}
return attr;
}
/** Get name of a TAG or attribute from the input stream.
*
* Either it returns a pointer to allocated memory which contains the name or it returns NULL if
* there is some error.
*/
static
char* get_name(
PPOS* ppos
)
{
char* name = NULL;
size_t size = 0;
size_t len = 0;
int c;
assert(ppos != NULL);
c = getsymbol(ppos);
if (!isalpha(c) && (c != '_') && (c != ':'))
{
xml_error(ppos, "Name starting with illegal charater");
return NULL;
}
/* The following is wrong: Here almost all characters that we casted to unicode are feasible */
while (isalnum(c) || (c == '_') || (c == ':') || (c == '.') || (c == '-'))
{
if (len + 1 >= size)
{
size += NAME_EXT_SIZE;
if ( name == NULL )
{
ALLOC_ABORT( BMSallocMemoryArray(&name, size) );
}
else
{
ALLOC_ABORT( BMSreallocMemoryArray(&name, size) );
}
}
assert(name != NULL);
assert(size > len);
name[len++] = (char)c;
c = getsymbol(ppos);
}
if (c != EOF)
ungetsymbol(ppos, c);
assert(name != NULL);
if (len == 0)
{
BMSfreeMemoryArray(&name);
name = NULL;
}
else
name[len] = '\0';
return name;
}
void set_role(const char *role) {
if (unicode_strlen(role) > 255) {
throw xml_error(
"Relation Role has more than 255 unicode characters");
}
m_role = std::string(role);
}
/**
* nmp_get_message_type: parse an XML in-memory document and build a tree.
*
* @xml_buff: input, pointer of xml text buffer
* @xml_len: input, xml text buffer length
* @message_type: output, contain message type ( command id )
* @return: succeed 0, else -1
*/
int
nmp_get_message_type(
const char *xml_buff,
int xml_len,
char *message_type
)
{
xmlDocPtr doc;
xmlNodePtr cur;
char *cmd;
ASSERT(message_type != NULL);
doc = xmlParseMemory(xml_buff, xml_len); //doc = xmlParseDoc(&xml_buff);
if (doc == NULL )
{
xml_error("Document not parsed successfully. \n");
return -1;
}
cur = xmlDocGetRootElement(doc); //确定文档根元素
if (cur == NULL)
{
xml_error("empty document\n");
xmlFreeDoc(doc);
return -1;
}
while (cur != NULL)
{
if (!xmlStrcmp(cur->name, (const xmlChar *) "message"))
{
cmd = (char *)xmlGetProp(cur, (const xmlChar *)"type");
if ((message_type != NULL)&&(cmd != NULL))
memcpy(message_type,cmd,strlen(cmd));
xmlFree(cmd);
xmlFreeDoc(doc);
return 0;
}
cur = cur->next;
}
xmlFreeDoc(doc);
return -1;
}
void set_ref(const char *ref) {
osm_nwr_signed_id_t _ref = 0;
try {
_ref = std::stol(ref);
} catch (std::invalid_argument &e) {
throw xml_error("Relation member 'ref' attribute is not numeric");
} catch (std::out_of_range &e) {
throw xml_error(
"Relation member 'ref' attribute value is too large");
}
if (_ref == 0) {
throw xml_error("Relation member 'ref' attribute may not be 0");
}
m_ref = _ref;
}
/** Checks for next tag */
static
void proc_before(
PPOS* ppos /**< input stream position */
)
{
int c;
assert(ppos != NULL);
assert(ppos->state == STATE_BEFORE);
c = skip_space(ppos);
if (c != '<')
{
xml_error(ppos, "Expecting '<'");
ppos->state = STATE_ERROR;
}
else
{
c = getsymbol(ppos);
switch(c)
{
case EOF :
xml_error(ppos, "Unexpected EOF");
ppos->state = STATE_ERROR;
break;
case '!' :
handle_decl(ppos);
break;
case '?' :
handle_pi(ppos);
break;
case '/' :
handle_endtag(ppos);
break;
default :
ungetsymbol(ppos, c);
handle_starttag(ppos);
break;
}
}
}
/// Parse an xs:boolean value.
bool parse_bool(xml_node<>* node, std::string description)
{
if (!node)
{
throw xml_error("Missing mandatory value for " + description);
}
const char* nptr = node->value();
return ((strcmp("true", nptr) == 0) || (strcmp("1", nptr) == 0));
}
MODULE load_ddns_services_list (THREAD *thread)
{
char
*filename;
filename = CONFIG ("ddns:filename");
services = NULL;
switch (xml_load_file (&services, "PATH", filename, FALSE))
{
case XML_FILEERROR:
sendfmt (&operq, "ERROR",
"xiddns: cannot read '%s': %s", filename, xml_error ());
raise_exception (exception_event);
break;
case XML_LOADERROR:
sendfmt (&operq, "ERROR",
"xiddns: error in '%s': %s", filename, xml_error ());
raise_exception (exception_event);
break;
}
}
/** Handle end tag */
static
void handle_endtag(
PPOS* ppos
)
{
char* name;
int c;
assert(ppos != NULL);
if ((name = get_name(ppos)) == NULL)
xml_error(ppos, "Missing name in endtag");
else
{
c = skip_space(ppos);
if (c != '>')
{
xml_error(ppos, "Missing '>' in endtag");
ppos->state = STATE_ERROR;
}
else
{
if (strcmp(name, top_pstack(ppos)->name))
{
xml_error(ppos, "Name of endtag does not match starttag");
ppos->state = STATE_ERROR;
}
else
{
if ( pop_pstack(ppos) )
ppos->state = STATE_PCDATA;
else
ppos->state = STATE_ERROR;
}
BMSfreeMemoryArray(&name);
}
}
}
/**
* nmp_add_new_node: add a new node
*
* @xml_in: input, pointer of xml text buffer
* @len_in: iutput, xml text buffer length
* @xml_out: output, pointer of buffer block, containing xml text
* after deleting a node
* @len_out: output, indicate buffer length of xml_out
* @xpath: addressing parts of an XML document
* @node_name: node name
* @node_cont: node content
* @return: succeed 0, else -1
*/
int
nmp_add_new_node(
const char *xml_in,
int len_in,
xmlChar *xml_out,
int *len_out,
xmlChar *xpath,
xmlChar *node_name,
xmlChar *node_cont
)
{
ASSERT(xml_in != NULL && xml_out!= NULL && xpath != NULL);
xmlDocPtr doc;
xmlNodePtr node;
xmlXPathObjectPtr app_result;
int node_num;;
xmlChar *xml_buffer;
doc = xmlParseMemory(xml_in, len_in); //doc = xmlParseDoc(&xml_buff);
if (doc == NULL )
{
xml_error("Document not parsed successfully. \n");
return -1;
}
app_result = nmp_get_node(doc, (const xmlChar *)xpath);
if (app_result == NULL)
goto end;
if (app_result)
{
xmlNodeSetPtr nodeset = app_result->nodesetval;
node_num = nodeset->nodeNr - 1;
node = xmlNewNode(NULL, BAD_CAST node_name);
xmlNodeSetContent(node, (const xmlChar *)node_cont);
xmlAddNextSibling ( nodeset->nodeTab[node_num],node);
xmlSaveFormatFileEnc("-", doc, ECODE_UFT8, 1);
xmlDocDumpMemoryEnc(doc, &xml_buffer, len_out,ECODE_UFT8);
xml_debug("xml_buffer=%s\n", xml_buffer);
memcpy(xml_out,xml_buffer,*len_out);
xmlFree(xml_buffer);
xmlXPathFreeObject(app_result);
}
end:
xmlFreeDoc(doc);
return 0;
}
void set_type(const char *type) {
std::string t = std::string(type);
if (boost::iequals(t, "Node"))
m_type = "Node";
else if (boost::iequals(t, "Way"))
m_type = "Way";
else if (boost::iequals(t, "Relation"))
m_type = "Relation";
else
throw xml_error(
(boost::format("Invalid type %1% in member relation") % type).str());
}
/**
* nmp_get_node_content: parse an XML in-memory document and get a
* node content.
*
* @xml_buf: input, pointer of xml text buffer
* @xml_len: input, xml text buffer length
* @xpath: input, addressing parts of an XML document
* @value_num output, indicate node number in array node_value
* @node_value output,
* @return: succeed 0, else -1
*/
int
nmp_get_node_content(
const char *xml_buff,
int xml_len,
xmlChar *xpath,
int *value_num,
xmlChar node_value[][MAX_CMD_ID_LEN]
)
{
ASSERT(value_num != NULL);
xmlDocPtr doc;
xmlChar *value;
xmlXPathObjectPtr app_result;
int i;
doc = xmlParseMemory(xml_buff, xml_len); //doc = xmlParseDoc(&xml_buff);
if (doc == NULL )
{
xml_error("Document not parsed successfully. \n");
return -1;
}
app_result = nmp_get_node(doc, (const xmlChar *)xpath);
if (app_result == NULL)
return 0;
if (app_result)
{
xmlNodeSetPtr nodeset = app_result->nodesetval;
*value_num = nodeset->nodeNr;
for (i=0; i < nodeset->nodeNr; i++)
{
value = xmlNodeGetContent(nodeset->nodeTab[i]);
if (value == NULL)
{
xml_warning("value is NULL\n");
continue;
}
memcpy(node_value[i],value,NODE_VALUE_LEN);
xmlFree(value);
}
xmlXPathFreeObject(app_result);
}
xmlFreeDoc(doc);
return 0;
}
/**
* nmp_parse_xml_file: open XML file and process it
*
* @filename: iutput, XML filename
* @seq: input, sequence of message
* @return: succeed NmpMsgInfo, else NULL
*/
NmpMsgInfo *
nmp_parse_xml_file(NmpCmdType *self, char *filename, unsigned int seq)
{
xmlDocPtr doc;
NmpMsgInfo *sys_msg;
doc = xmlReadFile(filename,"UTF-8",XML_PARSE_NOBLANKS);
//doc = xmlParseFile(filename);
if (doc == NULL )
{
xml_error("Document not parsed successfully. \n");
return NULL;
}
sys_msg = nmp_parse_xml(self, doc, seq);
if(!sys_msg)
{
xml_error("parse xml fail!\n");
}
xmlFreeDoc(doc);
return sys_msg;
}
/**
* nmp_parse_xml_str: process XML text existing in memory buffer
*
* @xml_buf: iutput, memory address used to contain xml text
* @xml_len: iutput, indicate length of xmf_buf, unit bytes
* @seq: input, sequence of message
* @return: succeed NmpMsgInfo, else NULL
*/
NmpMsgInfo *
nmp_parse_xml_str(NmpCmdType *self, const char *xml_buff, int xml_len,
unsigned int seq)
{
xmlDocPtr doc;
NmpMsgInfo *sys_msg;
// xml_error("--------------=======xml_buff=%s\n",xml_buff);
doc = xmlParseMemory(xml_buff, xml_len);
if (doc == NULL )
{
xml_error("Document not parsed successfully. \n");
return NULL;
}
sys_msg = nmp_parse_xml(self, doc, seq);
if(!sys_msg)
{
xml_error("parse xml fail!\n");
}
xmlFreeDoc(doc);
return sys_msg;
}
/**
* nmp_modify_attr_value: modify attribute's value in XML document
*
* @xml_in: input, pointer of xml text buffer
* @len_in: iutput, xml text buffer length
* @xml_out: output, pointer of buffer block, containing xml text
* after modifying attribute value
* @len_out: output, indicate buffer length of xml_out
* @xpath: addressing parts of an XML document
* @attribute: XML element attribute
* @attr_value: value of a specific attribute in XML document
* @return: succeed 0, else -1
*/
int
nmp_modify_attr_value(
const char *xml_in,
int len_in,
xmlChar *xml_out,
int *len_out,
xmlChar *xpath,
xmlChar *attribute,
xmlChar *attr_value
)
{
ASSERT(xml_out != NULL && attribute!=NULL && attr_value!= NULL);
xmlDocPtr doc;
xmlXPathObjectPtr app_result;
int node_num;;
xmlChar *xml_buffer;
doc = xmlParseMemory(xml_in, len_in); //doc = xmlParseDoc(&xml_buff);
if (doc == NULL )
{
xml_error("Document not parsed successfully. \n");
return -1;
}
app_result = nmp_get_node(doc, (const xmlChar *)xpath);
if (app_result == NULL)
{
goto end;
}
if (app_result)
{
xmlNodeSetPtr nodeset = app_result->nodesetval;
//*value_num = nodeset->nodeNr;
xml_debug(" nodeset->nodeNr=%d\n", nodeset->nodeNr);
node_num = nodeset->nodeNr - 1;
xmlSetProp(nodeset->nodeTab[0], BAD_CAST attribute, BAD_CAST attr_value);
xmlSaveFormatFileEnc("-", doc, ECODE_UFT8, 1);
xmlDocDumpMemoryEnc(doc, &xml_buffer, len_out,ECODE_UFT8);
memcpy(xml_out, xml_buffer, *len_out);
xmlFree(xml_buffer);
xmlXPathFreeObject(app_result);
}
end:
xmlFreeDoc(doc);
return 0;
}
/**
* nmp_get_node_attr_value: get value of an attribute
*
* @xml_buf: input, pointer of xml text buffer
* @xml_len: input, xml text buffer length
* @xpath: input, addressing parts of an XML document
* @attribute: input, attribute
* @attr_value: output, attribute value
* @return: succeed 0, else -1
*/
int
nmp_get_node_attr_value(
const char *xml_buff,
int xml_len,
xmlChar *xpath,
xmlChar *attribute,
xmlChar *attr_value
)
{
ASSERT((xml_buff != NULL) && (xpath!=NULL) &&
(attribute != NULL) && (attr_value != NULL));
xmlDocPtr doc;
char *cmd;
xmlXPathObjectPtr app_result;
int i;
doc = xmlParseMemory(xml_buff, xml_len); //doc = xmlParseDoc(&xml_buff);
if (doc == NULL )
{
xml_error("Document not parsed successfully. \n");
return -1;
}
app_result = nmp_get_node(doc, (const xmlChar *)xpath);
if (app_result == NULL)
goto end;
if (app_result)
{
xmlNodeSetPtr nodeset = app_result->nodesetval;
//*value_num = nodeset->nodeNr;
xml_debug(" nodeset->nodeNr=%d\n", nodeset->nodeNr);
for (i=0; i < nodeset->nodeNr; i++)
{
cmd = (char *)xmlGetProp(nodeset->nodeTab[i], (const xmlChar *)attribute);
xml_debug("cmd type =%s\n",cmd);
memcpy(attr_value,cmd,strlen(cmd));
xml_debug("attr_value type =%s\n",attr_value);
xmlFree(cmd);
}
xmlXPathFreeObject(app_result);
}
end:
xmlFreeDoc(doc);
return 0;
}
int main (int argc, char *argv [])
{
XML_ITEM
*root;
root = xml_new (NULL, "root", "");
if (xml_load_file (&root, ".", argv[1], FALSE) == 0)
{
xml_save_string (root);
xml_save_file (root, "testxml.txt");
xml_free (root);
}
else
printf ("Load error: %s\n", xml_error ());
return (EXIT_SUCCESS);
}
/**
* nmp_del_node: delete a node from XML text
*
* @xml_in: input, pointer of xml text buffer
* @len_in: iutput, xml text buffer length
* @xml_out: output, pointer of buffer block, containing xml text
* after deleting a node
* @len_out: output, indicate buffer length of xml_out
* @xpath: addressing parts of an XML document
* @return: succeed 0, else -1
*/
int
nmp_del_node(
const char *xml_in,
int len_in,
xmlChar *xml_out,
int *len_out,
xmlChar *xpath
)
{
ASSERT(xml_out != NULL);
xmlDocPtr doc;
xmlXPathObjectPtr app_result;
int node_num;;
xmlChar *xml_buffer;
doc = xmlParseMemory(xml_in, len_in); //doc = xmlParseDoc(&xml_buff);
if (doc == NULL )
{
xml_error("Document not parsed successfully. \n");
return -1;
}
app_result = nmp_get_node(doc, (const xmlChar *)xpath);
if (app_result == NULL)
goto end;
if (app_result)
{
xmlNodeSetPtr nodeset = app_result->nodesetval;
node_num = nodeset->nodeNr - 1;
xmlUnlinkNode(nodeset->nodeTab[node_num]);
xmlFreeNode(nodeset->nodeTab[node_num]);
xmlSaveFormatFileEnc("-", doc, ECODE_UFT8, 1);
xmlDocDumpMemoryEnc(doc, &xml_buffer, len_out,ECODE_UFT8);
memcpy(xml_out, xml_buffer, *len_out);
xmlFree(xml_buffer);
xmlXPathFreeObject(app_result);
}
end:
xmlFreeDoc(doc);
return 0;
}
void polyline_road::xml_read(xmlpp::TextReader &reader, const vec3f &scale)
{
assert(is_opening_element(reader, "line_rep"));
read_to_open(reader, "points");
std::cout<<"abcd"<<std::endl;
do
{
read_skip_comment(reader);
if(reader.get_node_type() == xmlpp::TextReader::Text ||
reader.get_node_type() == xmlpp::TextReader::SignificantWhitespace)
{
//std::cout<<"BE CAREFUL, NEED TEST! (hwm_xml_read.cpp)"<<std::endl;
std::string res(reader.get_value());
std::stringstream s1(res);
std::string line;
while(getline(s1, line, '\n')) {
std::istringstream s2(line);
vec3f pos;
s2 >> pos[0];
s2 >> pos[1];
s2 >> pos[2];
if((std::abs(pos[0] - 0) < 1e-6 && std::abs(pos[1] - 0) < 1e-6 && std::abs(pos[2] - 0) < 1e-6))
continue;
points_.push_back(vec3f(pos*scale));
}
}
}
while(!is_closing_element(reader, "points"));
if(!initialize())
throw xml_error(reader, "Failed to initialize polyine");
read_to_close(reader, "line_rep");
}