Xml Class
As Unigine extensively uses XML for storing different types of data, it also provides functionality for parsing and saving files of this type.
Xml Class
Members
static Xml()
Default constructor that creates an empty instance.static Xml(string name, string args = 0)
Creates an Xml tree with a given node as a root.Arguments
- string name - Name of the node that will be a root.
- string args - Optional arguments to the root node. If provided, they should be in this form:
arg1=\"value1\" arg2=\"value2\" …
If values do not contain spaces, escaped quotes can be omitted.
int setArg(string name, variable value)
Sets a literal value of a given argument.Arguments
- string name - The xml argument name.
- variable value - The xml argument value.
Return value
Returns 1 if the argument is set successfully; otherwise, 0.int isArg(string name)
Checks whether an argument with a given name exists.Arguments
- string name - Name to check.
Return value
1 if the argument exists; otherwise, 0.void setArgName(int num, string name)
Sets the Xml argument name.Arguments
- int num - The argument number.
- string name - The argument name.
string getArgName(int num)
Returns argument name by its number.Arguments
- int num - Argument number.
Return value
Argument name.void setArgValue(int num, string value)
Sets the Xml argument value.Arguments
- int num - The argument number.
- string value - The argument value.
string getArgValue(int num)
Returns the Xml argument value.Arguments
- int num - Argument number.
Return value
Argument value.int setBoolArg(string name, int value)
Sets a value of a given boolean argument.Arguments
- string name - Name of an argument.
- int value - Value of an argument. Any non-zero value means true, the zero value means false.
Return value
Always 1.int getBoolArg(string name, int value)
Returns a value of a given boolean argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
- int value - Default value of the argument.
Return value
1 if the argument has a value 1, true or TRUE; 0, if the argument has a value 0, false or FALSE; otherwise, 0.int getBoolArg(string name)
Returns a value of a given boolean argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
1 if the argument has a value 1, true or TRUE; 0, if the argument has a value 0, false or FALSE; otherwise, 0.void setBoolData(int data)
Sets a boolean content for the node. This can be done only for nodes with no children.Arguments
- int data - Content to set. Any non-zero value means true, the zero value means false.
int getBoolData()
Returns a boolean interpretation of data stored in the node.Return value
1 if a value equals to 1, true or TRUE; 0, if the value equals to 0, false or FALSE; otherwise, 0.Xml getChild(variable num)
Returns a child node by its name or index number in the child list.Notice
To check, if a child with a given name exists, use the isChild() method.
Arguments
Return value
Target child node, if it is found; otherwise, 0.int isChild(string name)
Checks if a child element with a given name exists.Arguments
- string name - Element name to check.
Return value
1 if a child with the provided name exists; otherwise, 0.variable getChildData(string name, variable value)
Allows to get the data from the Xml child node.Arguments
- string name - Name of the child node.
- variable value - Type of the child (int, float, vec3, vec4, dvec3, dvec4, ivec3, ivec4, mat4, dmat4, quat, string).
Return value
The value of the child node.int setDMat4Arg(string name, dmat4 value)
Sets a value of a given dmat4 argument.Arguments
- string name - Name of an argument.
- dmat4 value - Value of an argument.
Return value
Always 1.dmat4 getDMat4Arg(string name)
Returns a value of a given dmat4 argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setDMat4Data(dmat4 data)
Sets a dmat4 matrix content for the node. This can be done only for nodes with no children.Arguments
- dmat4 data - Content to set.
dmat4 getDMat4Data()
Returns a dmat4 matrix interpretation of data stored in the node.Return value
Data stored in the node.int setDoubleArg(string name, double value)
Sets a value of a given double argument.Arguments
- string name - Name of an argument.
- double value - Value of an argument.
Return value
Always 1.double getDoubleArg(string name, double value)
Returns a value of a given double argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
- double value - Default value of the argument.
Return value
Argument value.double getDoubleArg(string name)
Returns a value of a given double argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.int setDoubleArrayArg(string name, int src)
Sets a vector of double as a value of a given argument.Arguments
- string name - Name of an argument.
- int src - Reference to a vector with double components.
Return value
Always 1.int getDoubleArrayArg(string name, int name)
Returns a set of double values stored in an argument and puts them in a vector.Arguments
- string name - Name of a target argument.
- int name - Reference to a vector with double components.
Return value
1 if dest contains anything; otherwise, 0.int setDoubleArrayData(int src)
Sets a vector of double components as a content for the node. This can be done only for nodes with no children.Arguments
- int src - Reference to a vector with double components.
Return value
1 if the content is set successfully; otherwise, 0.int getDoubleArrayData(int dest)
Returns an interpretation of data stored in the node as a vector of double components.Arguments
- int dest - Reference to a vector with double components.
Return value
1 if dest contains anything; otherwise, 0.void setDoubleData(double data)
Sets a double content for the node. This can be done only for nodes with no children.Arguments
- double data - Content to set.
double getDoubleData()
Returns a double interpretation of data stored in the node.Return value
Data stored in the node.int setDVec3Arg(string name, dvec3 value)
Sets a value of a given dvec3 argument.Arguments
- string name - Name of an argument.
- dvec3 value - Value of an argument.
Return value
Always 1.dvec3 getDVec3Arg(string name)
Returns a value of a given dvec3 argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setDVec3Data(dvec3 data)
Sets a dvec3 content for the node. This can be done only for nodes with no children.Arguments
- dvec3 data - Content to set.
dvec3 getDVec3Data()
Returns a dvec3 interpretation of data stored in the node.Return value
Data stored in the node.int setDVec4Arg(string name, dvec4 value)
Sets a value of a given dvec4 argument.Arguments
- string name - Name of an argument.
- dvec4 value - Value of an argument.
Return value
Always 1.dvec4 getDVec4Arg(string name)
Returns a value of a given dvec4 argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setDVec4Data(dvec4 data)
Sets a dvec4 content for the node. This can be done only for nodes with no children.Arguments
- dvec4 data - Content to set.
dvec4 getDVec4Data()
Returns a dvec4 interpretation of data stored in the node.Return value
Data stored in the node.int setFloatArg(string name, float value)
Sets a value of a given float argument.Arguments
- string name - Name of an argument.
- float value - Value of an argument.
Return value
Always 1.float getFloatArg(string name, float value)
Returns a value of a given float argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
- float value - Default value of the argument.
Return value
Argument value.float getFloatArg(string name)
Returns a value of a given float argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.int setFloatArrayArg(string name, int src)
Sets a vector of floats as a value of a given argument.Arguments
- string name - Name of an argument.
- int src - Target vector.Reference to a vector.
Return value
Always 1.int getFloatArrayArg(string name, int dest)
Returns a set of float values stored in an argument and puts them in a vector.Arguments
- string name - Name of a target argument.
- int dest - Reference to a vector.
Return value
1 if dest contains anything; otherwise, 0.int setFloatArrayData(int src)
Sets a vector of floats as a content for the node. This can be done only for nodes with no children.Arguments
- int src - Reference to a vector.
Return value
1 if the content is set successfully; otherwise, 0.int getFloatArrayData(int dest)
Returns an interpretation of data stored in the node as a vector of floats.Arguments
- int dest - Reference to a vector.
Return value
1 if dest contains anything; otherwise, 0.void setFloatData(float data)
Sets a float content for the node. This can be done only for nodes with no children.Arguments
- float data - Content to set.
float getFloatData()
Returns a float interpretation of data stored in the node.Return value
Data stored in the node.String getFormattedSubTree(string path = 0)
Formats the node tree for "pretty printing". If no arguments are passed, the entire Xml tree would be output.Arguments
- string path - Path to the node. See the description of find() for more details.
Return value
Multi-line indented output of the node tree.int setIntArg(string name, int value, int radix = 10)
Sets a value for a given int argument in a given number notation. By default, the decimal number notation is used.Arguments
- string name - Name of an argument.
- int value - Value of an argument.
- int radix - Radix to use when setting a value.
Return value
1 if the value is set successfully; otherwise, 0.int getIntArg(string name)
Returns a value of a given int argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.int getIntArg(string name, int value)
Returns a value of a given int argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
- int value - Default value of the argument.
Return value
Argument value.int setIntArrayArg(string name, int src, int radix = 10)
Sets a vector of integers as a value of a given argument in a given number notation. By default, the decimal number notation is used.Arguments
- string name - Name of an argument.
- int src - Reference to a vector.
- int radix - Radix to use when setting a value.
Return value
1 if the array is set successfully; otherwise, 0.int setIntArrayData(int src, int radix)
Sets a vector of integers as a content for the Xml node in a given number notation. By default, the decimal number notation is used. This can be done only for Xml nodes with no children.Arguments
- int src - Reference to a vector.
- int radix - Radix to use when setting a value.
Return value
1 if the content is set successfully; otherwise, 0.int getIntArrayData(int dest)
Returns an interpretation of data stored in the node as a vector of integers.Arguments
- int dest - Reference to a vector.
Return value
1 if values are read successfully; otherwise, 0.int setIntData(int value, int radix = 10)
Sets an integer as a content for the Xml node in a given number notation. By default, the decimal number notation is used. This can be done only for Xml nodes with no children.Arguments
- int value - Content to set.
- int radix - Radix to use when setting a value.
Return value
1 if the content is set successfully; otherwise, 0.int getIntData()
Returns an integer interpretation of data stored in the node.Return value
Data stored in the node.int setIVec3Arg(string name, ivec3 value)
Sets a value of a given ivec3 argument.Arguments
- string name - Name of an argument.
- ivec3 value - Value of an argument.
Return value
Always 1.ivec3 getIVec3Arg(string name)
Returns a value of a given ivec3 argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setIVec3Data(ivec3 data)
Sets a ivec3 content for the node. This can be done only for nodes with no children.Arguments
- ivec3 data - Content to set.
ivec3 getIVec3Data()
Returns a ivec3 interpretation of data stored in the node.Return value
Data stored in the node.int setIVec4Arg(string name, ivec4 value)
Sets a value of a given ivec4 argument.Arguments
- string name - Name of an argument.
- ivec4 value - Value of an argument.
Return value
Always 1.ivec4 getIVec4Arg(string name)
Returns a value of a given ivec4 argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setIVec4Data(ivec4 data)
Sets a ivec4 content for the node. This can be done only for nodes with no children.Arguments
- ivec4 data - Content to set.
ivec4 getIVec4Data()
Returns a ivec4 interpretation of data stored in the node.Return value
Data stored in the node.int setMat4Arg(string name, mat4 value)
Sets a value of a given mat4 argument.Arguments
- string name - Name of an argument.
- mat4 value - Value of an argument.
Return value
Always 1.mat4 getMat4Arg(string name)
Returns a value of a given mat4 argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setMat4Data(mat4 data)
Sets a mat4 matrix content for the node. This can be done only for nodes with no children.Arguments
- mat4 data - Content to set.
mat4 getMat4Data()
Returns a mat4 matrix interpretation of data stored in the node.Return value
Data stored in the node.void setName(string name)
Sets a name of the node.Arguments
- string name - Node name.
string getName()
Returns a name of the node.Return value
Node name.int getNumArgs()
Returns a number of arguments.Return value
Number of arguments.int getNumChildren()
Returns a number of children contained in the node.In the standard Xml model the child nodes can be of the following types: node, text node and comment. The data of the Xml node is considered to be an unnamed child node, resulting in correct parsing of such a code:
Source code (XML)
Hence if a node has the data, it will add to the number of its children.
<text>
text</br>text
</text>Return value
Number of children.int setQuatArg(string name, quat value)
Sets a value of a given quat argument.Arguments
- string name - Name of an argument.
- quat value - Value of an argument.
Return value
Always 1.quat getQuatArg(string name)
Returns a value of a given quat argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setQuatData(quat data)
Sets a quaternion content for the node. This can be done only for nodes with no children.Arguments
- quat data - Content to set.
quat getQuatData()
Returns a quaternion interpretation of data stored in the node.Return value
Data stored in the node.int setRawData(string data)
Sets a raw content for the node. Raw data will be automatically formatted as a CDATA section. This can be done only for nodes with no children.Arguments
- string data - Content to set.
Return value
1 if the content is set successfully; otherwise, 0.int setStringArrayArg(string name, int src)
Sets a vector of strings as a value of a given argument in a given number notation. By default, the decimal number notation is used.Arguments
- string name - Name of an argument.
- int src - Reference to a vector.
Return value
Always 1.int getStringArrayArg(string name, int dest)
Returns a set of string values stored in an argument and puts them in a vector.Arguments
- string name - Name of the string.
- int dest - Reference to a vector.
Return value
1 if dest contains anything; otherwise, 0.int setStringArrayData(int src)
Sets a vector of strings as a content for the node. This can be done only for nodes with no children.Arguments
- int src - Reference to a vector.
Return value
1 if the content is set successfully; otherwise, 0.int getStringArrayData(int dest)
Returns an interpretation of data stored in the node as a vector of strings.Arguments
- int dest - Reference to a vector.
Return value
1 if dest contains anything; otherwise, 0.String getSubTree(string path = 0)
Dumps the node tree.Arguments
- string path - Path to the node. See the description of find() for more details.
Return value
Single-line non-indented output of the node tree. If no arguments are passed, the entire Xml tree would be output.int setVec3Arg(string name, vec3 value)
Sets a value of a given vec3 argument.Arguments
- string name - Name of an argument.
- vec3 value - Value of an argument.
Return value
Always 1.vec3 getVec3Arg(string name)
Returns a value of a given vec3 argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setVec3Data(vec3 data)
Sets a vec3 content for the node. This can be done only for nodes with no children.Arguments
- vec3 data - Content to set.
vec3 getVec3Data()
Returns a vec3 interpretation of data stored in the node.Return value
Data stored in the node.int setVec4Arg(string name, vec4 value)
Sets a value of a given vec4 argument.Arguments
- string name - Name of an argument.
- vec4 value - Value of an argument.
Return value
Always 1.vec4 getVec4Arg(string name)
Returns a value of a given vec4 argument.Notice
To check, if an argument exists, use the isArg() method.
Arguments
- string name - Name of a target argument.
Return value
Argument value.void setVec4Data(vec4 data)
Sets a vec4 content for the node. This can be done only for nodes with no children.Arguments
- vec4 data - Content to set.
vec4 getVec4Data()
Returns a vec4 interpretation of data stored in the node.Return value
Data stored in the node.int setXmlData(string data)
Sets an unquoted string to data stored in the node. This string can also contain xml sub-tree with rich text formating.Arguments
- string data - Unquoted string to set.
Return value
Returns 1 if the string is set successfully; otherwise, 0.Xml addChild(variable name, string args = 0)
Appends a new Xml node to the current Xml node as a child.Arguments
- variable name - Argument of one of the following types:
- Xml xml - Xml node.
- string name - Name of the Xml node.
- string args - Arguments of the Xml node. The default value is 0.
NoticeThis value should be passed if the first argument is a string
Return value
Created XML node.Xml addChild(Xml xml)
Appends a new Xml node to the current Xml node as a child.Arguments
- Xml xml - Argument of one of the following types:
- Xml xml - Xml node.
- string name - Name of the Xml node.
Return value
Created Xml node.void clear()
Clears all data associated with the node.void clearChildren()
Clears all children of the current Xml node.void clearUnusedData()
Clears all unused data.void copy(Xml source)
Copies all data (name, arguments, data, flags and a child hierarchy) from the source Xml node to the current one.Arguments
- Xml source - Source Xml node.
String decode(string arg1)
Decodes special xml characters (less-than, greater-than, ampersand, double-quote and apostrophe) and numeric character references.Arguments
- string arg1 - Data to decode.
Return value
Decoded string.String encode(string arg1)
Encodes special xml characters (less-than, greater-than, ampersand, double-quote and apostrophe) to their character entity reference.Arguments
- string arg1 - Data to encode.
Return value
Encoded string.int findArg(string name)
Find a Xml argument by its name.Arguments
- string name - Xml argument name.
Return value
Xml argument number.int findChild(string name)
Find the number of the Xml node child by its name.Arguments
- string name - Name of the child of the current Xml node.
Return value
The number of the Xml node child.int load(string name)
Loads an Xml document and sets the current node to be the root of the parsed tree.Arguments
- string name - Path to an Xml file.
Return value
1 if the file is read and parsed successfully; otherwise, 0.int parse(string src)
Parses a string with Xml mark-up and sets the current node to be the root of the parsed tree.Arguments
- string src - String with an Xml content.
Return value
1 if a string is successfully parsed; otherwise 0.void printUnusedData(string name)
Logs warnings of unused data for debugging.Arguments
- string name - Path to the file.
int removeArg(string name)
Removes the argument with the given name from the list of the current Xml node arguments.Arguments
- string name - Name of the target argument.
Return value
1 of the argument is removed successfully; otherwise, 0.variable removeChild(variable xml)
Removes a child node and its descendants from the current Xml node.Arguments
- variable xml - Argument of one of the following types:
- Xml xml - Xml child node (and its descendants) to be removed.
- string path - Path to the Xml child node that need to be removed.
The path should have the following form:
/node_a arg1=\"value1\"…/node_b arg1=\"value1\"…/…
NoticeSee also the find() function.
Return value
Removed child node and its descendants, if they are found; otherwise, NULL.int save(string name, int binary = 0)
Formats the tree of the current node and writes is to a file.Arguments
- string name - Path to an Xml file.
- int binary - Binary format flag.
Return value
1 if the file is written successfully; otherwise, 0.String symbols(string arg1)
Replaces ampersand characters with character entity references.Arguments
- string arg1 - to encode.
Return value
String which contains replaced ampersand characters with character entity references.Last update: 2017-07-03
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