mirror of
https://github.com/godotengine/godot.git
synced 2024-12-03 09:52:18 +08:00
593 lines
13 KiB
C++
593 lines
13 KiB
C++
/*************************************************************************/
|
|
/* xml_parser.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* http://www.godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
#include "xml_parser.h"
|
|
#include "print_string.h"
|
|
//#define DEBUG_XML
|
|
|
|
VARIANT_ENUM_CAST(XMLParser::NodeType);
|
|
|
|
static bool _equalsn(const CharType* str1, const CharType* str2, int len) {
|
|
int i;
|
|
for(i=0; i < len && str1[i] && str2[i] ; ++i)
|
|
if (str1[i] != str2[i])
|
|
return false;
|
|
|
|
// if one (or both) of the strings was smaller then they
|
|
// are only equal if they have the same lenght
|
|
return (i == len) || (str1[i] == 0 && str2[i] == 0);
|
|
}
|
|
|
|
|
|
String XMLParser::_replace_special_characters(const String& origstr) {
|
|
|
|
int pos = origstr.find("&");
|
|
int oldPos = 0;
|
|
|
|
if (pos == -1)
|
|
return origstr;
|
|
|
|
String newstr;
|
|
|
|
while(pos != -1 && pos < origstr.length()-2) {
|
|
// check if it is one of the special characters
|
|
|
|
int specialChar = -1;
|
|
for (int i=0; i<(int)special_characters.size(); ++i)
|
|
{
|
|
const CharType* p = &origstr[pos]+1;
|
|
|
|
if (_equalsn(&special_characters[i][1], p, special_characters[i].length()-1))
|
|
{
|
|
specialChar = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (specialChar != -1)
|
|
{
|
|
newstr+=(origstr.substr(oldPos, pos - oldPos));
|
|
newstr+=(special_characters[specialChar][0]);
|
|
pos += special_characters[specialChar].length();
|
|
}
|
|
else
|
|
{
|
|
newstr+=(origstr.substr(oldPos, pos - oldPos + 1));
|
|
pos += 1;
|
|
}
|
|
|
|
// find next &
|
|
oldPos = pos;
|
|
pos = origstr.find("&", pos);
|
|
}
|
|
|
|
if (oldPos < origstr.length()-1)
|
|
newstr+=(origstr.substr(oldPos, origstr.length()-oldPos));
|
|
|
|
return newstr;
|
|
}
|
|
|
|
|
|
static inline bool _is_white_space(char c)
|
|
{
|
|
return (c==' ' || c=='\t' || c=='\n' || c=='\r');
|
|
}
|
|
|
|
|
|
//! sets the state that text was found. Returns true if set should be set
|
|
bool XMLParser::_set_text(char* start, char* end) {
|
|
// check if text is more than 2 characters, and if not, check if there is
|
|
// only white space, so that this text won't be reported
|
|
if (end - start < 3)
|
|
{
|
|
char* p = start;
|
|
for(; p != end; ++p)
|
|
if (!_is_white_space(*p))
|
|
break;
|
|
|
|
if (p == end)
|
|
return false;
|
|
}
|
|
|
|
// set current text to the parsed text, and replace xml special characters
|
|
String s = String::utf8(start, (int)(end - start));
|
|
node_name = _replace_special_characters(s);
|
|
|
|
// current XML node type is text
|
|
node_type = NODE_TEXT;
|
|
|
|
return true;
|
|
}
|
|
|
|
void XMLParser::_parse_closing_xml_element() {
|
|
node_type = NODE_ELEMENT_END;
|
|
node_empty = false;
|
|
attributes.clear();
|
|
|
|
++P;
|
|
const char* pBeginClose = P;
|
|
|
|
while(*P != '>')
|
|
++P;
|
|
|
|
node_name = String::utf8(pBeginClose, (int)(P - pBeginClose));
|
|
#ifdef DEBUG_XML
|
|
print_line("XML CLOSE: "+node_name);
|
|
#endif
|
|
++P;
|
|
}
|
|
|
|
void XMLParser::_ignore_definition() {
|
|
node_type = NODE_UNKNOWN;
|
|
|
|
char *F=P;
|
|
// move until end marked with '>' reached
|
|
while(*P != '>')
|
|
++P;
|
|
node_name.parse_utf8(F,P-F);
|
|
++P;
|
|
}
|
|
|
|
bool XMLParser::_parse_cdata() {
|
|
|
|
if (*(P+1) != '[')
|
|
return false;
|
|
|
|
node_type = NODE_CDATA;
|
|
|
|
// skip '<![CDATA['
|
|
int count=0;
|
|
while( *P && count<8 )
|
|
{
|
|
++P;
|
|
++count;
|
|
}
|
|
|
|
if (!*P)
|
|
return true;
|
|
|
|
char *cDataBegin = P;
|
|
char *cDataEnd = 0;
|
|
|
|
// find end of CDATA
|
|
while(*P && !cDataEnd) {
|
|
if (*P == '>' &&
|
|
(*(P-1) == ']') &&
|
|
(*(P-2) == ']'))
|
|
{
|
|
cDataEnd = P - 2;
|
|
}
|
|
|
|
++P;
|
|
}
|
|
|
|
if ( cDataEnd )
|
|
node_name = String::utf8(cDataBegin, (int)(cDataEnd - cDataBegin));
|
|
else
|
|
node_name = "";
|
|
#ifdef DEBUG_XML
|
|
print_line("XML CDATA: "+node_name);
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
void XMLParser::_parse_comment() {
|
|
|
|
node_type = NODE_COMMENT;
|
|
P += 1;
|
|
|
|
char *pCommentBegin = P;
|
|
|
|
int count = 1;
|
|
|
|
// move until end of comment reached
|
|
while(count)
|
|
{
|
|
if (*P == '>')
|
|
--count;
|
|
else
|
|
if (*P == '<')
|
|
++count;
|
|
|
|
++P;
|
|
}
|
|
|
|
P -= 3;
|
|
node_name = String::utf8(pCommentBegin+2, (int)(P - pCommentBegin-2));
|
|
P += 3;
|
|
#ifdef DEBUG_XML
|
|
print_line("XML COMMENT: "+node_name);
|
|
#endif
|
|
|
|
}
|
|
|
|
void XMLParser::_parse_opening_xml_element() {
|
|
|
|
node_type = NODE_ELEMENT;
|
|
node_empty = false;
|
|
attributes.clear();
|
|
|
|
// find name
|
|
const char* startName = P;
|
|
|
|
// find end of element
|
|
while(*P != '>' && !_is_white_space(*P))
|
|
++P;
|
|
|
|
const char* endName = P;
|
|
|
|
// find attributes
|
|
while(*P != '>')
|
|
{
|
|
if (_is_white_space(*P))
|
|
++P;
|
|
else
|
|
{
|
|
if (*P != '/')
|
|
{
|
|
// we've got an attribute
|
|
|
|
// read the attribute names
|
|
const char* attributeNameBegin = P;
|
|
|
|
while(!_is_white_space(*P) && *P != '=')
|
|
++P;
|
|
|
|
const char* attributeNameEnd = P;
|
|
++P;
|
|
|
|
// read the attribute value
|
|
// check for quotes and single quotes, thx to murphy
|
|
while( (*P != '\"') && (*P != '\'') && *P)
|
|
++P;
|
|
|
|
if (!*P) // malformatted xml file
|
|
return;
|
|
|
|
const char attributeQuoteChar = *P;
|
|
|
|
++P;
|
|
const char* attributeValueBegin = P;
|
|
|
|
while(*P != attributeQuoteChar && *P)
|
|
++P;
|
|
|
|
if (!*P) // malformatted xml file
|
|
return;
|
|
|
|
const char* attributeValueEnd = P;
|
|
++P;
|
|
|
|
Attribute attr;
|
|
attr.name = String::utf8(attributeNameBegin,
|
|
(int)(attributeNameEnd - attributeNameBegin));
|
|
|
|
String s =String::utf8(attributeValueBegin,
|
|
(int)(attributeValueEnd - attributeValueBegin));
|
|
|
|
attr.value = _replace_special_characters(s);
|
|
attributes.push_back(attr);
|
|
}
|
|
else
|
|
{
|
|
// tag is closed directly
|
|
++P;
|
|
node_empty = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// check if this tag is closing directly
|
|
if (endName > startName && *(endName-1) == '/')
|
|
{
|
|
// directly closing tag
|
|
node_empty = true;
|
|
endName--;
|
|
}
|
|
|
|
node_name = String::utf8(startName, (int)(endName - startName));
|
|
#ifdef DEBUG_XML
|
|
print_line("XML OPEN: "+node_name);
|
|
#endif
|
|
|
|
++P;
|
|
}
|
|
|
|
|
|
void XMLParser::_parse_current_node() {
|
|
|
|
char* start = P;
|
|
node_offset = P - data;
|
|
|
|
// more forward until '<' found
|
|
while(*P != '<' && *P)
|
|
++P;
|
|
|
|
if (!*P)
|
|
return;
|
|
|
|
if (P - start > 0)
|
|
{
|
|
// we found some text, store it
|
|
if (_set_text(start, P))
|
|
return;
|
|
}
|
|
|
|
++P;
|
|
|
|
// based on current token, parse and report next element
|
|
switch(*P)
|
|
{
|
|
case '/':
|
|
_parse_closing_xml_element();
|
|
break;
|
|
case '?':
|
|
_ignore_definition();
|
|
break;
|
|
case '!':
|
|
if (!_parse_cdata())
|
|
_parse_comment();
|
|
break;
|
|
default:
|
|
_parse_opening_xml_element();
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
uint64_t XMLParser::get_node_offset() const {
|
|
|
|
return node_offset;
|
|
};
|
|
|
|
Error XMLParser::seek(uint64_t p_pos) {
|
|
|
|
ERR_FAIL_COND_V(!data, ERR_FILE_EOF)
|
|
ERR_FAIL_COND_V(p_pos >= length, ERR_FILE_EOF);
|
|
|
|
P = data + p_pos;
|
|
|
|
return read();
|
|
};
|
|
|
|
void XMLParser::_bind_methods() {
|
|
|
|
ObjectTypeDB::bind_method(_MD("read"),&XMLParser::read);
|
|
ObjectTypeDB::bind_method(_MD("get_node_type"),&XMLParser::get_node_type);
|
|
ObjectTypeDB::bind_method(_MD("get_node_name"),&XMLParser::get_node_name);
|
|
ObjectTypeDB::bind_method(_MD("get_node_data"),&XMLParser::get_node_data);
|
|
ObjectTypeDB::bind_method(_MD("get_node_offset"),&XMLParser::get_node_offset);
|
|
ObjectTypeDB::bind_method(_MD("get_attribute_count"),&XMLParser::get_attribute_count);
|
|
ObjectTypeDB::bind_method(_MD("get_attribute_name"),&XMLParser::get_attribute_name);
|
|
ObjectTypeDB::bind_method(_MD("get_attribute_value"),(String (XMLParser::*)(int) const) &XMLParser::get_attribute_value);
|
|
ObjectTypeDB::bind_method(_MD("has_attribute"),&XMLParser::has_attribute);
|
|
ObjectTypeDB::bind_method(_MD("get_named_attribute_value"), (String (XMLParser::*)(const String&) const) &XMLParser::get_attribute_value);
|
|
ObjectTypeDB::bind_method(_MD("get_named_attribute_value_safe"), &XMLParser::get_attribute_value_safe);
|
|
ObjectTypeDB::bind_method(_MD("is_empty"),&XMLParser::is_empty);
|
|
ObjectTypeDB::bind_method(_MD("get_current_line"),&XMLParser::get_current_line);
|
|
ObjectTypeDB::bind_method(_MD("skip_section"),&XMLParser::skip_section);
|
|
ObjectTypeDB::bind_method(_MD("seek"),&XMLParser::seek);
|
|
ObjectTypeDB::bind_method(_MD("open","file"),&XMLParser::open);
|
|
ObjectTypeDB::bind_method(_MD("open_buffer","buffer"),&XMLParser::open_buffer);
|
|
|
|
BIND_CONSTANT( NODE_NONE );
|
|
BIND_CONSTANT( NODE_ELEMENT );
|
|
BIND_CONSTANT( NODE_ELEMENT_END );
|
|
BIND_CONSTANT( NODE_TEXT );
|
|
BIND_CONSTANT( NODE_COMMENT );
|
|
BIND_CONSTANT( NODE_CDATA );
|
|
BIND_CONSTANT( NODE_UNKNOWN );
|
|
|
|
};
|
|
|
|
|
|
|
|
Error XMLParser::read() {
|
|
|
|
// if not end reached, parse the node
|
|
if (P && (P - data) < length - 1 && *P != 0)
|
|
{
|
|
_parse_current_node();
|
|
return OK;
|
|
}
|
|
|
|
return ERR_FILE_EOF;
|
|
}
|
|
|
|
XMLParser::NodeType XMLParser::get_node_type() {
|
|
|
|
return node_type;
|
|
}
|
|
String XMLParser::get_node_data() const {
|
|
|
|
ERR_FAIL_COND_V( node_type != NODE_TEXT, "");
|
|
return node_name;
|
|
}
|
|
|
|
String XMLParser::get_node_name() const {
|
|
ERR_FAIL_COND_V( node_type == NODE_TEXT, "");
|
|
return node_name;
|
|
}
|
|
int XMLParser::get_attribute_count() const {
|
|
|
|
return attributes.size();
|
|
}
|
|
String XMLParser::get_attribute_name(int p_idx) const {
|
|
|
|
ERR_FAIL_INDEX_V(p_idx,attributes.size(),"");
|
|
return attributes[p_idx].name;
|
|
}
|
|
String XMLParser::get_attribute_value(int p_idx) const {
|
|
|
|
ERR_FAIL_INDEX_V(p_idx,attributes.size(),"");
|
|
return attributes[p_idx].value;
|
|
}
|
|
bool XMLParser::has_attribute(const String& p_name) const {
|
|
|
|
for(int i=0;i<attributes.size();i++) {
|
|
if (attributes[i].name==p_name)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
String XMLParser::get_attribute_value(const String& p_name) const {
|
|
|
|
int idx=-1;
|
|
for(int i=0;i<attributes.size();i++) {
|
|
if (attributes[i].name==p_name) {
|
|
idx=i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (idx<0) {
|
|
ERR_EXPLAIN("Attribute not found: "+p_name);
|
|
}
|
|
ERR_FAIL_COND_V(idx<0,"");
|
|
return attributes[idx].value;
|
|
|
|
}
|
|
|
|
String XMLParser::get_attribute_value_safe(const String& p_name) const {
|
|
|
|
int idx=-1;
|
|
for(int i=0;i<attributes.size();i++) {
|
|
if (attributes[i].name==p_name) {
|
|
idx=i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (idx<0)
|
|
return "";
|
|
return attributes[idx].value;
|
|
|
|
}
|
|
bool XMLParser::is_empty() const {
|
|
|
|
return node_empty;
|
|
}
|
|
|
|
Error XMLParser::open_buffer(const Vector<uint8_t>& p_buffer) {
|
|
|
|
ERR_FAIL_COND_V(p_buffer.size()==0,ERR_INVALID_DATA);
|
|
|
|
length = p_buffer.size();
|
|
data = memnew_arr( char, length+1);
|
|
copymem(data,p_buffer.ptr(),length);
|
|
data[length]=0;
|
|
P=data;
|
|
return OK;
|
|
|
|
}
|
|
|
|
Error XMLParser::open(const String& p_path) {
|
|
|
|
Error err;
|
|
FileAccess * file = FileAccess::open(p_path,FileAccess::READ,&err);
|
|
|
|
if (err) {
|
|
ERR_FAIL_COND_V(err!=OK,err);
|
|
}
|
|
|
|
length = file->get_len();
|
|
ERR_FAIL_COND_V(length<1, ERR_FILE_CORRUPT);
|
|
|
|
data = memnew_arr( char, length+1);
|
|
file->get_buffer((uint8_t*)data,length);
|
|
data[length]=0;
|
|
P=data;
|
|
|
|
memdelete(file);
|
|
|
|
return OK;
|
|
|
|
}
|
|
|
|
void XMLParser::skip_section() {
|
|
|
|
// skip if this element is empty anyway.
|
|
if (is_empty())
|
|
return;
|
|
|
|
// read until we've reached the last element in this section
|
|
int tagcount = 1;
|
|
|
|
while(tagcount && read()==OK)
|
|
{
|
|
if (get_node_type() == XMLParser::NODE_ELEMENT &&
|
|
!is_empty())
|
|
{
|
|
++tagcount;
|
|
}
|
|
else
|
|
if (get_node_type() == XMLParser::NODE_ELEMENT_END)
|
|
--tagcount;
|
|
}
|
|
|
|
}
|
|
|
|
void XMLParser::close() {
|
|
|
|
if (data)
|
|
memdelete_arr(data);
|
|
data=NULL;
|
|
length=0;
|
|
P=NULL;
|
|
node_empty=false;
|
|
node_type=NODE_NONE;
|
|
node_offset = 0;
|
|
}
|
|
|
|
int XMLParser::get_current_line() const {
|
|
|
|
return 0;
|
|
}
|
|
|
|
XMLParser::XMLParser() {
|
|
|
|
data=NULL;
|
|
close();
|
|
special_characters.push_back("&");
|
|
special_characters.push_back("<lt;");
|
|
special_characters.push_back(">gt;");
|
|
special_characters.push_back("\"quot;");
|
|
special_characters.push_back("'apos;");
|
|
|
|
|
|
}
|
|
XMLParser::~XMLParser() {
|
|
|
|
|
|
if (data)
|
|
memdelete_arr(data);
|
|
}
|