XML Class

Properties Methods Events Configuration Settings Errors

The XML class can be used to both parse and create XML documents.

Syntax

XML

Remarks

The XML class can operate as either a parser of writer of XML.

Parsing XML

The XML class parses XML documents and verifies that they are well-formed. The results are provided through a set of events complying with the SAX2 specification.

In addition, the document structure may be queried through an XPath mechanism that supports a subset of the XPath specification.

The parser is optimized for read applications, with a very fast engine that builds internal DOM structures with close to zero heap allocations. Additionally, BuildDOM can be set to False which reduces the overhead of creating the DOM and offers a fast forward-only parsing implementation which fires events to provide the parsed data.

When parsing a document events will fire to provide information about the parsed data. After Parse returns the document may be navigated by setting XPath if BuildDOM is True (default). If BuildDOM is False parsed data is only accessible through the events.

Events are fired only when qualifying conditions (such as, for example, the beginning of a new element) are met. In the meantime, text will be buffered internally. The following events will fire during parsing:

Characters
Comment
EndElement
EndPrefixMapping
EvalEntity
IgnorableWhitespace
Meta
PI
SpecialSection
StartElement
StartPrefixMapping

If BuildDOM is True (default), XPath may be set after this method returns. XPath implements a subset of the XML XPath specification, allowing you to point to specific elements in the XML documents.

The path is a series of one or more element accessors separated by '/'. The path can be absolute (starting with '/') or relative to the current XPath location.

The following are possible values for an element accessor:


'name'	A particular element name
name[i]	The i-th subelement of the current element with the given name
[i]	The i-th subelement of the current element
[last()]	The last subelement of the current element
[last()-i]	The subelement located at the last location minus i in the current element
name[@attrname="attrvalue"]	The subelement containing a particular value for a given attribute (supports single AND double quotes)
..	The parent of the current element

When XPath is set to a valid path, XElement points to the name of the element, with XParent, XNamespace, XPrefix, XChildName, XChildNamespace, XChildPrefix, XChildXText, and XText providing other properties of the element. The attributes of the current element are provided in the AttrName, AttrNamespace, AttrPrefix, and AttrValue properties.

BuildDOM must be set to True prior to parsing the document for the XPath functionality to be available.

Example (Setting XPath):


Document root	XML.XPath = "/"
Specific Element	XML.XPath = "/root/SubElement1/SubElement2/"
i-th Child	XML.XPath = "/root/SubElement1[i]"

Input Properties

The class will determine the source of the input based on which properties are set.

The order in which the input properties are checked is as follows:

InputFile
InputData

When a valid source is found the search stops.

If parsing multiple documents call Reset between documents to reset the parser.

An additional "relaxed" mode allows for lexical parsing of non-XML documents (e.g. HTML). This is enabled by setting Validate to False. In this case, events will be fired as elements, entities, etc. are encountered, but the structure of the document will not be checked for "well-formedness", and the internal DOM structure will not be built.

Writing XML

To use the class first decide whether or not to write to file, or to OutputData.

Output Properties

The class will determine the destination of the output based on which properties are set.

The order in which the output properties are checked is as follows:

OutputFile
OutputData: The output data is written to this property if no other destination is specified.

To begin writing the XML document first optionally set XMLDeclaration. If this is not set the class will use a default XML declaration at the beginning of the document.

Next begin adding elements to your document. Calling StartElement will open an element with the specified name. To create a nested structure continue calling StartElement to open more child elements. To write a value within an element call PutString. To close the element that was last opened call EndElement. Each time EndElement is called the element at the current level is closed. Alternatively, calling PutElement will write the element specified with the value specified and will also close the element.

To write an attribute of the current element, after calling StartElement call PutAttr. Call PutAttr multiple times to add multiple attributes.

Writing comments or CDATA can be done at any time with the PutComment and PutCData methods.

To close your XML document call Save. You can call Save from any location and it will close any remaining open elements automatically.

Property List

The following is the full list of the properties of the class with short descriptions. Click on the links for further details.


BuildDOM	When True, an internal object model of the XML document is created.
InputData	The XML data to parse.
InputFile	The file to process.
NamespaceCount	The number of records in the Namespace arrays.
NamespacePrefix	The Prefix for the Namespace .
NamespaceURI	Namespace URI associated with the corresponding Prefix .
OutputData	The output XML after processing.
OutputFile	The path to a local file where the output will be written.
Overwrite	Indicates whether or not the class should overwrite files.
Validate	When True, the parser checks that the document consists of well-formed XML.
AttrCount	The number of records in the Attr arrays.
AttrName	The Name provides the local name (without prefix) of the attribute.
AttrNamespace	Attribute namespace.
AttrPrefix	Attribute prefix (if any).
AttrValue	Attribute value.
XChildCount	The number of records in the XChild arrays.
XChildName	The Name property provides the local name (without prefix) of the element.
XChildNamespace	Namespace of the element.
XChildPrefix	Prefix of the element (if any).
XChildXText	The inner text of the element.
XCommentCount	The number of records in the XComment arrays.
XCommentText	This property holds the comment text.
XElement	The name of the current element.
XMLDeclarationEncoding	This property specifies the XML encoding to use.
XMLDeclarationStandalone	This property indicates whether the standalone attribute is present in the declaration with a value of true.
XMLDeclarationVersion	This property specifies the XML version.
XNamespace	The namespace of the current element.
XParent	The parent of the current element.
XPath	Provides a way to point to a specific element in the document.
XPrefix	The prefix of the current element.
XSubTree	A snapshot of the current element in the document.
XText	The text of the current element.

Method List

The following is the full list of the methods of the class with short descriptions. Click on the links for further details.


Config	Sets or retrieves a configuration setting.
EndElement	Writes the closing tag of an open XML element.
Flush	Flushes the parser and checks its end state.
GetAttr	Returns the value of the specified attribute.
HasXPath	Determines whether a specific element exists in the document.
LoadDOM	Loads the DOM from a file.
LoadSchema	Load the XML schema.
Parse	This method parses the specified XML data.
PutAttr	Writes an XML attribute.
PutCData	Writes an XML CDATA block.
PutComment	Writes an XML comment block.
PutElement	Writes a simple XML element with a value.
PutRaw	Writes a raw XML fragment.
PutString	Writes text inside an XML element.
RemoveAttr	Remove a attribute.
RemoveChildren	Removes the children of the elment as the specified XPath.
RemoveElement	Removes the elment as the specified XPath.
Reset	Resets the parser.
Save	Closes the class writing stream.
SaveDOM	Saves the DOM to a file.
StartElement	Writes the opening tag of an XML element.
TryXPath	Navigates to the specified XPath if it exists.

Event List

The following is the full list of the events fired by the class with short descriptions. Click on the links for further details.


Characters	Fired for plain text segments of the input stream.
Comment	Fired when a comment section is encountered.
EndElement	Fired when an end-element tag is encountered.
EndPrefixMapping	Fired when leaving the scope of a namespace declaration.
Error	Information about errors during data delivery.
EvalEntity	Fired every time an entity needs to be evaluated.
IgnorableWhitespace	Fired when a section of ignorable whitespace is encountered.
Meta	Fired when a meta section is encountered.
PI	Fired when a processing instruction section is encountered.
SpecialSection	Fired when a special section is encountered.
StartElement	Fired when a begin-element tag is encountered in the document.
StartPrefixMapping	Fired when entering the scope of a namespace declaration.
XML	Fires as XML is written.

Configuration Settings

The following is a list of configuration settings for the class with short descriptions. Click on the links for further details.


CacheContent	If true, the original XML is saved in a buffer.
Charset	Specifies the charset used when encoding data.
EOL	The characters to use for separating lines.
ErrorOnEmptyAttr	If true, passing an invalid attribute to the Attr method will throw an exception.
ExtraNameChars	Extra characters for the parser to consider as name characters.
ExtraSpaceChars	Extra characters for the parser to consider as white space.
FlushOnEOL	If set, the parser flushes its text buffer after every line of text.
IgnoreBadAttributePrefixes	If true, bad (unknown) attribute prefixes are ignored.
IgnoreBadElementPrefixes	If true, bad (unknown) element prefixes are ignored.
IncludeElementPrefix	Whether to include the prefix in the element name.
IncludeXMLDeclaration	Whether to include the XML declaration when writing XML.
Indent	The characters to use for each indentation level.
Offset	Current offset of the document being parsed.
PreserveWhitespace	If true, leading and trailing whitespace in element text is preserved.
QuoteChar	Quote character to use for attribute values.
StringProcessingOptions	Defines options to use when processing string values.
BuildInfo	Information about the product's build.
CodePage	The system code page used for Unicode to Multibyte translations.
LicenseInfo	Information about the current license.
UseInternalSecurityAPI	Tells the class whether or not to use the system security libraries or an internal implementation.

BuildDOM Property (XML Class)

When True, an internal object model of the XML document is created.

Syntax

bool GetBuildDOM();
int SetBuildDOM(bool bBuildDOM);

Default Value

true

Remarks

Set BuildDOM to True when you need to browse the current document through XPath.

Validate is automatically set to True when BuildDOM is set to True.

Data Type

Boolean

InputData Property (XML Class)

The XML data to parse.

Syntax

QString GetInputData();
int SetInputData(QString qsInputData);

Default Value

Remarks

This property specifies the XML to be processed. Set this property before calling Parse.

This may be set to a complete XML document, or partial data. When setting partial data call Parse after each chunk of data is set. For instance:

//Parse the following in chunks: <test>1</test> xml.InputData = "<test>" xml.Parse(); xml.InputData = "1<test>" xml.Parse();

Input Properties

The class will determine the source of the input based on which properties are set.

The order in which the input properties are checked is as follows:

InputFile
InputData

When a valid source is found the search stops.

Data Type

String

InputFile Property (XML Class)

The file to process.

Syntax

QString GetInputFile();
int SetInputFile(QString qsInputFile);

Default Value

Remarks

This property specifies the file to be processed. Set this property to the full or relative path to the file which will be processed.

After setting this property call Parse to parse the document.

Input Properties

The class will determine the source of the input based on which properties are set.

The order in which the input properties are checked is as follows:

InputFile
InputData

When a valid source is found the search stops.

Data Type

String

NamespaceCount Property (XML Class)

The number of records in the Namespace arrays.

Syntax

int GetNamespaceCount();
int SetNamespaceCount(int iNamespaceCount);

Default Value

Remarks

This property controls the size of the following arrays:

NamespacePrefix
NamespaceURI

The array indices start at 0 and end at NamespaceCount - 1.

This property is not available at design time.

Data Type

Integer

NamespacePrefix Property (XML Class)

The Prefix for the Namespace .

Syntax

QString GetNamespacePrefix(int iNamespaceIndex);
int SetNamespacePrefix(int iNamespaceIndex, QString qsNamespacePrefix);

Default Value

Remarks

The NamespacePrefix for the Namespace.

The NamespaceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the NamespaceCount property.

This property is not available at design time.

Data Type

String

NamespaceURI Property (XML Class)

Namespace URI associated with the corresponding Prefix .

Syntax

QString GetNamespaceURI(int iNamespaceIndex);
int SetNamespaceURI(int iNamespaceIndex, QString qsNamespaceURI);

Default Value

Remarks

Namespace URI associated with the corresponding NamespacePrefix. This is usually a URL pointing to the XML schema for the namespace.

The NamespaceIndex parameter specifies the index of the item in the array. The size of the array is controlled by the NamespaceCount property.

This property is not available at design time.

Data Type

String

OutputData Property (XML Class)

The output XML after processing.

Syntax

QString GetOutputData();
int SetOutputData(QString qsOutputData);

Default Value

Remarks

This property will be populated with the output from the operation if OutputFile is not set.

Data Type

String

OutputFile Property (XML Class)

The path to a local file where the output will be written.

Syntax

QString GetOutputFile();
int SetOutputFile(QString qsOutputFile);

Default Value

Remarks

This property specifies the file to which the output will be written. This may be set to an absolute or relative path.

Output Properties

The class will determine the destination of the output based on which properties are set.

The order in which the output properties are checked is as follows:

OutputFile
OutputData: The output data is written to this property if no other destination is specified.

Data Type

String

Overwrite Property (XML Class)

Indicates whether or not the class should overwrite files.

Syntax

bool GetOverwrite();
int SetOverwrite(bool bOverwrite);

Default Value

false

Remarks

This property indicates whether or not the class will overwrite OutputFile. If Overwrite is False, an error will be thrown whenever OutputFile exists before an operation. The default value is False.

Data Type

Boolean

Validate Property (XML Class)

When True, the parser checks that the document consists of well-formed XML.

Syntax

bool GetValidate();
int SetValidate(bool bValidate);

Default Value

true

Remarks

You can set Validate to False when you want to ignore XML format rules (e.g. while parsing HTML files).

Data Type

Boolean

AttrCount Property (XML Class)

The number of records in the Attr arrays.

Syntax

int GetAttrCount();
int SetAttrCount(int iAttrCount);

Default Value

Remarks

This property controls the size of the following arrays:

AttrName
AttrNamespace
AttrPrefix
AttrValue

The array indices start at 0 and end at AttrCount - 1.

This property is not available at design time.

Data Type

Integer

AttrName Property (XML Class)

The Name provides the local name (without prefix) of the attribute.

Syntax

QString GetAttrName(int iAttrIndex);

Default Value

Remarks

The AttrName provides the local name (without prefix) of the attribute.

The AttrIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttrCount property.

This property is read-only and not available at design time.

Data Type

String

AttrNamespace Property (XML Class)

Attribute namespace.

Syntax

QString GetAttrNamespace(int iAttrIndex);

Default Value

Remarks

Attribute namespace.

The AttrIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttrCount property.

This property is read-only and not available at design time.

Data Type

String

AttrPrefix Property (XML Class)

Attribute prefix (if any).

Syntax

QString GetAttrPrefix(int iAttrIndex);

Default Value

Remarks

Attribute prefix (if any). If the attribute does not have a prefix, this property is empty.

The AttrIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttrCount property.

This property is read-only and not available at design time.

Data Type

String

AttrValue Property (XML Class)

Attribute value.

Syntax

QString GetAttrValue(int iAttrIndex);

Default Value

Remarks

Attribute value.

The AttrIndex parameter specifies the index of the item in the array. The size of the array is controlled by the AttrCount property.

This property is read-only and not available at design time.

Data Type

String

XChildCount Property (XML Class)

The number of records in the XChild arrays.

Syntax

int GetXChildCount();
int SetXChildCount(int iXChildCount);

Default Value

Remarks

This property controls the size of the following arrays:

XChildName
XChildNamespace
XChildPrefix
XChildXText

The array indices start at 0 and end at XChildCount - 1.

This property is not available at design time.

Data Type

Integer

XChildName Property (XML Class)

The Name property provides the local name (without prefix) of the element.

Syntax

QString GetXChildName(int iXChildIndex);

Default Value

Remarks

The XChildName property provides the local name (without prefix) of the element.

The XChildIndex parameter specifies the index of the item in the array. The size of the array is controlled by the XChildCount property.

This property is read-only and not available at design time.

Data Type

String

XChildNamespace Property (XML Class)

Namespace of the element.

Syntax

QString GetXChildNamespace(int iXChildIndex);

Default Value

Remarks

Namespace of the element.

The XChildIndex parameter specifies the index of the item in the array. The size of the array is controlled by the XChildCount property.

This property is read-only and not available at design time.

Data Type

String

XChildPrefix Property (XML Class)

Prefix of the element (if any).

Syntax

QString GetXChildPrefix(int iXChildIndex);

Default Value

Remarks

Prefix of the element (if any). If the element does not have a prefix, this property is empty.

The XChildIndex parameter specifies the index of the item in the array. The size of the array is controlled by the XChildCount property.

This property is read-only and not available at design time.

Data Type

String

XChildXText Property (XML Class)

The inner text of the element.

Syntax

QString GetXChildXText(int iXChildIndex);

Default Value

Remarks

The inner text of the element.

The XChildIndex parameter specifies the index of the item in the array. The size of the array is controlled by the XChildCount property.

This property is read-only and not available at design time.

Data Type

String

XCommentCount Property (XML Class)

The number of records in the XComment arrays.

Syntax

int GetXCommentCount();
int SetXCommentCount(int iXCommentCount);

Default Value

Remarks

This property controls the size of the following arrays:

XCommentText

The array indices start at 0 and end at XCommentCount - 1.

This property is not available at design time.

Data Type

Integer

XCommentText Property (XML Class)

This property holds the comment text.

Syntax

QString GetXCommentText(int iXCommentIndex);
int SetXCommentText(int iXCommentIndex, QString qsXCommentText);

Default Value

Remarks

This property holds the comment text.

The XCommentIndex parameter specifies the index of the item in the array. The size of the array is controlled by the XCommentCount property.

This property is not available at design time.

Data Type

String

XElement Property (XML Class)

The name of the current element.

Syntax

QString GetXElement();
int SetXElement(QString qsXElement);

Default Value

Remarks

The current element is specified via the XPath property.

Data Type

String

XMLDeclarationEncoding Property (XML Class)

This property specifies the XML encoding to use.

Syntax

QString GetXMLDeclarationEncoding();
int SetXMLDeclarationEncoding(QString qsXMLDeclarationEncoding);

Default Value

"utf-8"

Remarks

This property specifies the XML encoding to use.

This may be set before writing a document. The default value is "utf-8".

This is only applicable when writing XML.

This property is not available at design time.

Data Type

String

XMLDeclarationStandalone Property (XML Class)

This property indicates whether the standalone attribute is present in the declaration with a value of true.

Syntax

bool GetXMLDeclarationStandalone();
int SetXMLDeclarationStandalone(bool bXMLDeclarationStandalone);

Default Value

true

Remarks

This property indicates whether the standalone attribute is present in the declaration with a value of true.

This may be set before writing a document. The default value is "true".

This is only applicable when writing XML.

This property is not available at design time.

Data Type

Boolean

XMLDeclarationVersion Property (XML Class)

This property specifies the XML version.

Syntax

QString GetXMLDeclarationVersion();
int SetXMLDeclarationVersion(QString qsXMLDeclarationVersion);

Default Value

"1.0"

Remarks

This property specifies the XML version.

This may be set before writing a document. The default value is "1.0".

This is only applicable when writing XML.

This property is not available at design time.

Data Type

String

XNamespace Property (XML Class)

The namespace of the current element.

Syntax

QString GetXNamespace();
int SetXNamespace(QString qsXNamespace);

Default Value

Remarks

The current element is specified via the XPath property.

Data Type

String

XParent Property (XML Class)

The parent of the current element.

Syntax

QString GetXParent();

Default Value

Remarks

The current element is specified via the XPath property.

This property is read-only.

Data Type

String

XPath Property (XML Class)

Provides a way to point to a specific element in the document.

Syntax

QString GetXPath();
int SetXPath(QString qsXPath);

Default Value

Remarks

XPath implements a subset of the XML XPath specification, allowing you to point to specific elements in the XML documents.

The path is a series of one or more element accessors separated by '/'. The path can be absolute (starting with '/') or relative to the current XPath location.

The following are possible values for an element accessor:


'name'	A particular element name
name[i]	The i-th subelement of the current element with the given name
[i]	The i-th subelement of the current element
[last()]	The last subelement of the current element
[last()-i]	The subelement located at the last location minus i in the current element
name[@attrname="attrvalue"]	The subelement containing a particular value for a given attribute (supports single AND double quotes)
..	The parent of the current element

BuildDOM must be set to True prior to parsing the document for the XPath functionality to be available.

Example (Setting XPath):


Document root	XML.XPath = "/"
Specific Element	XML.XPath = "/root/SubElement1/SubElement2/"
i-th Child	XML.XPath = "/root/SubElement1[i]"

Data Type

String

XPrefix Property (XML Class)

The prefix of the current element.

Syntax

QString GetXPrefix();
int SetXPrefix(QString qsXPrefix);

Default Value

Remarks

The current element is specified via the XPath property.

Data Type

String

XSubTree Property (XML Class)

A snapshot of the current element in the document.

Syntax

QString GetXSubTree();

Default Value

Remarks

The current element is specified via the XPath property. In order for this property to work you must have the CacheContent set to true.

This property is read-only.

Data Type

String

XText Property (XML Class)

The text of the current element.

Syntax

QString GetXText();
int SetXText(QString qsXText);

Default Value

Remarks

The current element is specified via the XPath property.

Data Type

String

Config Method (XML Class)

Sets or retrieves a configuration setting.

Syntax

QString Config(const QString& qsConfigurationString);

Remarks

Config is a generic method available in every class. It is used to set and retrieve configuration settings for the class.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

Error Handling

This method returns a String value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

EndElement Method (XML Class)

Writes the closing tag of an open XML element.

Syntax

int EndElement();

Remarks

Writes the closing tag of the XML element most recently opened using StartElement.

If no elements are opened, the call fails with an error

Error Handling

This method returns a result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message. (Note: This method's result code can also be obtained by calling the GetLastErrorCode() method after it returns.)

Flush Method (XML Class)

Flushes the parser and checks its end state.

Syntax

int Flush();

Remarks

When Flush is called, the parser flushes all its buffers, firing events as necessary, and then checks its end state. If Validate is true, the parser verifies that all open elements were closed, returning an error if not.

Error Handling

GetAttr Method (XML Class)

Returns the value of the specified attribute.

Syntax

QString GetAttr(const QString& qsAttrName);

Remarks

This method returns the value of the attribute specified by the AttrName parameter.

If the attribute does not exist an empty string is returned. The behavior when an attribute does not exit is controlled by ErrorOnEmptyAttr.

Please refer to the AttrName, AttrNamespace, AttrPrefix, and AttrValue properties for more information.

Error Handling

HasXPath Method (XML Class)

Determines whether a specific element exists in the document.

Syntax

bool HasXPath(const QString& qsXPath);

Remarks

This method determines whether a particular XPath exists within the document. This may be used to check if a path exists before setting it via XPath.

This method returns True if the xpath exists, False if not.

See XPath for details on the XPath syntax.

Error Handling

This method returns a Boolean value; after it returns, call the GetLastErrorCode() method to obtain its result code; 0 indicates success, while a non-zero error code indicates that this method encountered an error during its execution. If an error occurs, the GetLastError() method can be called to retrieve the associated error message.

LoadDOM Method (XML Class)

Loads the DOM from a file.

Syntax

int LoadDOM(const QString& qsFileName);

Remarks

The LoadDOM method loads a DOM structure previously saved by SaveDOM from the file specified in FileName.

Please refer to the SaveDOM method for more information.

Error Handling

LoadSchema Method (XML Class)

Load the XML schema.

Syntax

int LoadSchema(const QString& qsSchema);

Remarks

This functionality is not yet implemented.

This method loads the schema specified in the Schema parameter. The Schema may be specified as either a string or the path to a file on disk.

The class will validate the input data during parsing to verify it adheres to the schema.

Error Handling

Parse Method (XML Class)

This method parses the specified XML data.

Syntax

int Parse();

Remarks

This method parses the specified XML data.

Characters
Comment
EndElement
EndPrefixMapping
EvalEntity
IgnorableWhitespace
Meta
PI
SpecialSection
StartElement
StartPrefixMapping

If BuildDOM is True (default), XPath may be set after this method returns. XPath implements a subset of the XML XPath specification, allowing you to point to specific elements in the XML documents.

The path is a series of one or more element accessors separated by '/'. The path can be absolute (starting with '/') or relative to the current XPath location.

The following are possible values for an element accessor:


'name'	A particular element name
name[i]	The i-th subelement of the current element with the given name
[i]	The i-th subelement of the current element
[last()]	The last subelement of the current element
[last()-i]	The subelement located at the last location minus i in the current element
name[@attrname="attrvalue"]	The subelement containing a particular value for a given attribute (supports single AND double quotes)
..	The parent of the current element

BuildDOM must be set to True prior to parsing the document for the XPath functionality to be available.

Example (Setting XPath):


Document root	XML.XPath = "/"
Specific Element	XML.XPath = "/root/SubElement1/SubElement2/"
i-th Child	XML.XPath = "/root/SubElement1[i]"

Input Properties

The class will determine the source of the input based on which properties are set.

The order in which the input properties are checked is as follows:

InputFile
InputData

When a valid source is found the search stops.

If parsing multiple documents call Reset between documents to reset the parser.

Error Handling

PutAttr Method (XML Class)

Writes an XML attribute.

Syntax

int PutAttr(const QString& qsName, const QString& qsNamespaceURI, const QString& qsValue);

Remarks

Writes an XML attribute on the currently opened XML element. It must be called right after calling StartElement and before any calls to PutString, PutComment or PutRaw.

If Name is a local name without a prefix, the class will automatically introduce a new xmlns="NamespaceURI" attribute if necessary.

If Name is in the form prefix:local, then class will automatically introduce a new xmlns:prefix="NamespaceURI" as necessary.

Certain attribute names will be handled in special ways by this method. If Name is "xmlns" or uses the "xmlns" prefix, the attribute will be interpreted as a namespace declaration, regardless of the value of NamespaceURI. Similarly, any attribute using the "xml" prefix will be interpreted as a special attribute (like "xml:lang") and NamespaceURI will be ignored.

Error Handling

PutCData Method (XML Class)

Writes an XML CDATA block.

Syntax

int PutCData(const QString& qsText);

Remarks

Writes a new XML CDATA block with the specified text inside the current element.

Error Handling

PutComment Method (XML Class)

Writes an XML comment block.

Syntax

int PutComment(const QString& qsText);

Remarks

Writes a new XML comment block with the specified text.

Error Handling

PutElement Method (XML Class)

Writes a simple XML element with a value.

Syntax

int PutElement(const QString& qsName, const QString& qsNamespaceURI, const QString& qsValue);

Remarks

Writes a simple XML element with no attributes and the specified value between the opening and closing tags.

If Name is a local name without a prefix, the class will automatically introduce a new xmlns="NamespaceURI" attribute if necessary.

If Name is in the form prefix:local, then class will automatically introduce a new xmlns:prefix="NamespaceURI" as necessary.

When calling PutElement or StartElement, if a NamespaceURI is not specified an empty namespace will be defined for the element. If a namespace should be associated with the element, a NamespaceURI value must be provided. When creating the XML, the class will determine if the namespace already exists to avoid duplicate definitions of the same namespace. For example, to create this XML:

<book xmlns='urn:loc.gov:books'
      xmlns:isbn='urn:ISBN:0-395-36341-6'>
    <title>Cheaper by the Dozen</title>
    <isbn:number>1568491379</isbn:number>
</book>

Use the code:

xml.StartElement("book", "urn:loc.gov:books");
xml.PutAttr("xmlns:isbn", "", "urn:ISBN:0-395-36341-6");
xml.PutElement("title", "urn:loc.gov:books", "Cheaper by the Dozen");
xml.PutElement("isbn:number", "urn:ISBN:0-395-36341-6", "1568491379");
xmlw.Close();

In the above example the "title" element uses the default namespace "urn:loc.gov:books" and the "number" element uses the "urn:ISBN:0-395-36341-6" namespace as defined for the "isbn" prefix.

Error Handling

PutRaw Method (XML Class)

Writes a raw XML fragment.

Syntax

int PutRaw(const QString& qsText);

Remarks

Writes a raw XML fragment to the output, without escaping and without verification. If an XML element opening tag has been written, before the raw fragment, the fragment will be written as a child of the current element.

Use of this method should be carefully considered as it can easily lead to malformed XML content.

Error Handling

PutString Method (XML Class)

Writes text inside an XML element.

Syntax

int PutString(const QString& qsText);

Remarks

This method will XML escape the value provided and write the resulting escaped text between the opening and closing tags of an XML element.

Error Handling

RemoveAttr Method (XML Class)

Remove a attribute.

Syntax

int RemoveAttr(const QString& qsAttrName);

Remarks

This method removes an attribute at the specified XPath

This functionality is not yet implemented.

Error Handling

RemoveChildren Method (XML Class)

Removes the children of the elment as the specified XPath.

Syntax

int RemoveChildren();

Remarks

This method removes the children of the element specified by XPath.

When called the class will remove the children of the element from the internal representation of the XML (the DOM). The element itself remains, with no children. This may be used at any time after Parse returns, or from within the EndElement event as a document is parsed in order to remove sections of a document that will not be needed later. By removing unnecessary elements from the DOM memory consumption is reduced and overall performance is improved.

RemoveChildren Example:

Given the XML

<food>
	<fruits>
		<apple>
			<color>red</color>
		</apple>
		<banana>
			<color>yellow</color>
		</banana>
	</fruits>
</food>

This code removes the children of the apple element while leaving the apple element in place.

xml.XPath = "/food/fruits/apple"; xml.RemoveChildren();

The XML stored in the DOM is now:

<food>
	<fruits>
		<apple>
		</apple>
		<banana>
			<color>yellow</color>
		</banana>
	</fruits>
</food>

Error Handling

RemoveElement Method (XML Class)

Removes the elment as the specified XPath.

Syntax

int RemoveElement();

Remarks

This method removes the element specified by XPath.

When called the class will remove the element and its children from the internal representation of the XML (the DOM). This may be used at any time after Parse returns, or from within the EndElement event as a document is parsed in order to remove sections of a document that will not be needed later. By removing unnecessary elements from the DOM memory consumption is reduced and overall performance is improved.

RemoveElement Example:

Given the XML

<food>
	<fruits>
		<apple>
			<color>red</color>
		</apple>
		<banana>
			<color>yellow</color>
		</banana>
	</fruits>
</food>

This code removes the apple element and its children.

xml.XPath = "/food/fruits/apple"; xml.RemoveElement();

The XML stored in the DOM is now:

<food>
	<fruits>
		<banana>
			<color>yellow</color>
		</banana>
	</fruits>
</food>

Error Handling

Reset Method (XML Class)

Resets the parser.

Syntax

int Reset();

Remarks

When called, the parser flushes all its buffers, firing events as necessary, and then initializes itself to its default state.

Reset must also be used as signal to the parser that the current stream of text has terminated.

Error Handling

Save Method (XML Class)

Closes the class writing stream.

Syntax

int Save();

Remarks

This method will close any open XML elements, and then close the OutputFile if necessary.

Error Handling

SaveDOM Method (XML Class)

Saves the DOM to a file.

Syntax

int SaveDOM(const QString& qsFileName);

Remarks

The SaveDOM method saves the current DOM structure to the file specified in FileName. This enables the component to later load the DOM without incurring any parsing overhead.

Please refer to the LoadDOM method for more information.

Error Handling

StartElement Method (XML Class)

Writes the opening tag of an XML element.

Syntax

int StartElement(const QString& qsName, const QString& qsNamespaceURI);

Remarks

Writes the opening tag of a new XML element. If an XML element is already opened, then this element is written as a child.

If Name is a local name without a prefix, the class will automatically introduce a new xmlns="NamespaceURI" attribute if necessary.

If Name is in the form prefix:local, then class will automatically introduce a new xmlns:prefix="NamespaceURI" as necessary.

<book xmlns='urn:loc.gov:books'
      xmlns:isbn='urn:ISBN:0-395-36341-6'>
    <title>Cheaper by the Dozen</title>
    <isbn:number>1568491379</isbn:number>
</book>

Use the code:

xml.StartElement("book", "urn:loc.gov:books");
xml.PutAttr("xmlns:isbn", "", "urn:ISBN:0-395-36341-6");
xml.PutElement("title", "urn:loc.gov:books", "Cheaper by the Dozen");
xml.PutElement("isbn:number", "urn:ISBN:0-395-36341-6", "1568491379");
xmlw.Close();

In the above example the "title" element uses the default namespace "urn:loc.gov:books" and the "number" element uses the "urn:ISBN:0-395-36341-6" namespace as defined for the "isbn" prefix.

Error Handling

TryXPath Method (XML Class)

Navigates to the specified XPath if it exists.

Syntax

bool TryXPath(const QString& qsxpath);

Remarks

This method will attempt to navigate to the specified XPath parameter if it exists within the document.

If the XPath exists the XPath property will be updated and this method returns True.

If the XPath does not exist the XPath property is not updated and this method returns False.

Error Handling

Characters Event (XML Class)

Fired for plain text segments of the input stream.

Syntax

class XMLCharactersEventParams {
public:
  const QString &Text();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void Characters(XMLCharactersEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireCharacters(XMLCharactersEventParams *e) {...}

Remarks

The Characters event provides the plain text content of the XML document (i.e. the text inside the tags). The text is provided through the Text parameter.

The text includes white space as well as end of line characters, except for ignorable whitespace which is fired through the IgnorableWhitespace event.

Comment Event (XML Class)

Fired when a comment section is encountered.

Syntax

class XMLCommentEventParams {
public:
  const QString &Text();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void Comment(XMLCommentEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireComment(XMLCommentEventParams *e) {...}

Remarks

The Comment event is fired whenever a comment section () is found in the document.

The full text of the comment is provided by the Text parameter.

EndElement Event (XML Class)

Fired when an end-element tag is encountered.

Syntax

class XMLEndElementEventParams {
public:
  const QString &Namespace();

  const QString &Element();

  const QString &QName();

  bool IsEmpty();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void EndElement(XMLEndElementEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireEndElement(XMLEndElementEventParams *e) {...}

Remarks

The EndElement event is fired when an end-element tag is found in the document.

The element name is provided by the Element parameter.

The IsEmpty parameter is true when the event corresponds with an empty element declaration.

EndPrefixMapping Event (XML Class)

Fired when leaving the scope of a namespace declaration.

Syntax

class XMLEndPrefixMappingEventParams {
public:
  const QString &Prefix();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void EndPrefixMapping(XMLEndPrefixMappingEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireEndPrefixMapping(XMLEndPrefixMappingEventParams *e) {...}

Remarks

The StartPrefixMapping event is fired when entering the scope of a namespace declaration.

Error Event (XML Class)

Information about errors during data delivery.

Syntax

class XMLErrorEventParams {
public:
  int ErrorCode();

  const QString &Description();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void Error(XMLErrorEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireError(XMLErrorEventParams *e) {...}

Remarks

The Error event is fired in case of exceptional conditions during message processing. Normally the class fails with an error.

ErrorCode contains an error code and Description contains a textual description of the error. For a list of valid error codes and their descriptions, please refer to the Error Codes section.

EvalEntity Event (XML Class)

Fired every time an entity needs to be evaluated.

Syntax

class XMLEvalEntityEventParams {
public:
  const QString &Entity();

  const QString &Value();
  void SetValue(const QString &qsValue);

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void EvalEntity(XMLEvalEntityEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireEvalEntity(XMLEvalEntityEventParams *e) {...}

Remarks

The Value parameter contains a suggested value for the entity (normally the entity name itself). You may set Value to a value of your choice, which will be later passed into the text stream.

IgnorableWhitespace Event (XML Class)

Fired when a section of ignorable whitespace is encountered.

Syntax

class XMLIgnorableWhitespaceEventParams {
public:
  const QString &Text();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void IgnorableWhitespace(XMLIgnorableWhitespaceEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireIgnorableWhitespace(XMLIgnorableWhitespaceEventParams *e) {...}

Remarks

The ignorable whitespace section is provided by the Text parameter.

Meta Event (XML Class)

Fired when a meta section is encountered.

Syntax

class XMLMetaEventParams {
public:
  const QString &Text();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void Meta(XMLMetaEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireMeta(XMLMetaEventParams *e) {...}

Remarks

The Meta event is fired whenever a meta information section (<! ..text... >) is found in the document.

The full text of the meta section is provided by the Text parameter.

PI Event (XML Class)

Fired when a processing instruction section is encountered.

Syntax

class XMLPIEventParams {
public:
  const QString &Text();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void PI(XMLPIEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FirePI(XMLPIEventParams *e) {...}

Remarks

The PI event is fired whenever a processing instruction section (<? ..text... ?>) is found in the document.

The full text of the processing instruction is provided by the Text parameter.

SpecialSection Event (XML Class)

Fired when a special section is encountered.

Syntax

class XMLSpecialSectionEventParams {
public:
  const QString &SectionId();

  const QString &Text();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void SpecialSection(XMLSpecialSectionEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireSpecialSection(XMLSpecialSectionEventParams *e) {...}

Remarks

The SpecialSection event is fired whenever a special section (such as <![ CDATA [ ..text... ]]>) is found in the document.

The full text of the special section is provided by the Text parameter, while the SectionId parameter provides the section identifier (e.g. "CDATA").

StartElement Event (XML Class)

Fired when a begin-element tag is encountered in the document.

Syntax

class XMLStartElementEventParams {
public:
  const QString &Namespace();

  const QString &Element();

  const QString &QName();

  bool IsEmpty();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void StartElement(XMLStartElementEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireStartElement(XMLStartElementEventParams *e) {...}

Remarks

The StartElement event is fired when a begin-element tag is found in the document.

The element name is provided through the Element parameter. The attribute names and values (if any) are provided through the AttrName, AttrNamespace, AttrPrefix, and AttrValue properties.

The IsEmpty parameter is true when the event corresponds with an empty element declaration.

StartPrefixMapping Event (XML Class)

Fired when entering the scope of a namespace declaration.

Syntax

class XMLStartPrefixMappingEventParams {
public:
  const QString &Prefix();

  const QString &URI();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void StartPrefixMapping(XMLStartPrefixMappingEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireStartPrefixMapping(XMLStartPrefixMappingEventParams *e) {...}

Remarks

The EndPrefixMapping event is fired when leaving the scope of a namespace declaration.

XML Event (XML Class)

Fires as XML is written.

Syntax

class XMLXMLEventParams {
public:
  const QString &Text();

  int EventRetVal();
  void SetEventRetVal(int iRetVal);
};

// To handle, connect one or more slots to this signal.
void XMLEvt(XMLXMLEventParams *e);

// Or, subclass XML and override this emitter function.
virtual int FireXML(XMLXMLEventParams *e) {...}

Remarks

This event fires when XML is output. The Text parameter holds the data being written.

This functionality is not yet implemented.

Configuration Settings (XML Class)

The class accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the class, access to these internal properties is provided through the Config method.

XML Configuration Settings

CacheContent: If true, the original XML is saved in a buffer.

This config controls whether or not the component retains the entire original XML in a buffer. This is used to retain the original XML as opposed to returning generated XML after parsing. The default value is true.

Charset: Specifies the charset used when encoding data.

This setting specifies the character set used when encoding data. This value will also be used when creating the XMLDeclaration. The default value is "utf-8".

EOL: The characters to use for separating lines.

If specified, the class will format the output XML, using the specified characters to separate multiple lines for nested XML elements. The default value is CRLF ("\r\n") .

This option should be combined with Indent for full effect.

ErrorOnEmptyAttr: If true, passing an invalid attribute to the Attr method will throw an exception.

If an invalid attribute name is passed into the GetAttr method, the method will return with an empty string if this is set to false, otherwise an exception is thrown.

ExtraNameChars: Extra characters for the parser to consider as name characters.

Normally, the parser considers only the following characters as part of an XML identifier: 'A' through 'Z', 'a' through 'z', '0' through '9', and '.', '-', '_', ':'.

If you would like any other characters to be considered as name characters, you may set them as a string into this property.

ExtraSpaceChars: Extra characters for the parser to consider as white space.

Normally, the parser considers only the following characters as white space: ' ' (space), '\t' (tab), '\ n' (newline), '\r' (carriage return), '\f' (form feed), and '\v' (vertical tab).

If you would like any other characters to be considered as white space, you may set them as a string into this property.

FlushOnEOL: If set, the parser flushes its text buffer after every line of text.

The FlushOnEOL property controls whether Characters events are fired for every line of the input text stream or not. Normally lines are buffered internally and delivered in batches, but if the FlushOnEOL flag is set, then a Characters event is fired for each line.

IgnoreBadAttributePrefixes: If true, bad (unknown) attribute prefixes are ignored.

Normally a trappable error is generated when an unknown attribute prefix is encountered. This setting suppresses the error. The default value is True.

IgnoreBadElementPrefixes: If true, bad (unknown) element prefixes are ignored.

Normally a trappable error is generated when an unknown element prefix is encountered. This setting suppresses the error. The default value is True.

IncludeElementPrefix: Whether to include the prefix in the element name.

This setting specifies whether to include the element prefix in the Element parameter of the StartElement and EndElement events.

If False (default) and Validate is set to False the prefix is included in the Element parameter. For instance: ds:DigestMethod

If True and Validate is set to False the prefix is not included in the Element parameter. For instance: DigestMethod

This setting is only applicable when Validate is False.

IncludeXMLDeclaration: Whether to include the XML declaration when writing XML.

This setting specifies whether the XML declaration is included in the output XML when writing XML. When set to True (default) the XML declaration will be included above any user specified XML. For instance:

<?xml version="1.0" encoding="utf-8" standalone="yes" ?>
...

Indent: The characters to use for each indentation level.

If specified, the class will format the output XML, using the specified characters to denote each indentation level for nested XML elements.

This option should be combined with EOL for full effect.

Offset: Current offset of the document being parsed.

This property is useful for determining the location of possible XML errors in the document.

Offset values start at 1.

PreserveWhitespace: If true, leading and trailing whitespace in element text is preserved.

Normally the leading and trailing whitespace from an element's text is trimmed. When this property is set to true, this leading and trailing whitespace is preserved. The default value is false.

QuoteChar: Quote character to use for attribute values.

By default, the class will use double quotes around attribute values. This property can be used to specify a different character such as a single quote.

StringProcessingOptions: Defines options to use when processing string values.

This setting determines what additional processing is performed on string values fired through the Characters event..

Note: This only applies when BuildDOM is False.

By default no additional processing is performed and the string is returned as is from the document. Strings may also be XML unescaped. Possible values are:


0 (none - default)	No additional processing is performed.
1	Strings are XML unescaped.

For instance, when set to 0 the following text may be fired through the Characters event:

&"<>

When set to 1 the following text would be fired through the Characters event:

&"<>

Base Configuration Settings

BuildInfo: Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

CodePage: The system code page used for Unicode to Multibyte translations.

The default code page is Unicode UTF-8 (65001).

The following is a list of valid code page identifiers:


Identifier	Name
037	IBM EBCDIC - U.S./Canada
437	OEM - United States
500	IBM EBCDIC - International
708	Arabic - ASMO 708
709	Arabic - ASMO 449+, BCON V4
710	Arabic - Transparent Arabic
720	Arabic - Transparent ASMO
737	OEM - Greek (formerly 437G)
775	OEM - Baltic
850	OEM - Multilingual Latin I
852	OEM - Latin II
855	OEM - Cyrillic (primarily Russian)
857	OEM - Turkish
858	OEM - Multilingual Latin I + Euro symbol
860	OEM - Portuguese
861	OEM - Icelandic
862	OEM - Hebrew
863	OEM - Canadian-French
864	OEM - Arabic
865	OEM - Nordic
866	OEM - Russian
869	OEM - Modern Greek
870	IBM EBCDIC - Multilingual/ROECE (Latin-2)
874	ANSI/OEM - Thai (same as 28605, ISO 8859-15)
875	IBM EBCDIC - Modern Greek
932	ANSI/OEM - Japanese, Shift-JIS
936	ANSI/OEM - Simplified Chinese (PRC, Singapore)
949	ANSI/OEM - Korean (Unified Hangul Code)
950	ANSI/OEM - Traditional Chinese (Taiwan; Hong Kong SAR, PRC)
1026	IBM EBCDIC - Turkish (Latin-5)
1047	IBM EBCDIC - Latin 1/Open System
1140	IBM EBCDIC - U.S./Canada (037 + Euro symbol)
1141	IBM EBCDIC - Germany (20273 + Euro symbol)
1142	IBM EBCDIC - Denmark/Norway (20277 + Euro symbol)
1143	IBM EBCDIC - Finland/Sweden (20278 + Euro symbol)
1144	IBM EBCDIC - Italy (20280 + Euro symbol)
1145	IBM EBCDIC - Latin America/Spain (20284 + Euro symbol)
1146	IBM EBCDIC - United Kingdom (20285 + Euro symbol)
1147	IBM EBCDIC - France (20297 + Euro symbol)
1148	IBM EBCDIC - International (500 + Euro symbol)
1149	IBM EBCDIC - Icelandic (20871 + Euro symbol)
1200	Unicode UCS-2 Little-Endian (BMP of ISO 10646)
1201	Unicode UCS-2 Big-Endian
1250	ANSI - Central European
1251	ANSI - Cyrillic
1252	ANSI - Latin I
1253	ANSI - Greek
1254	ANSI - Turkish
1255	ANSI - Hebrew
1256	ANSI - Arabic
1257	ANSI - Baltic
1258	ANSI/OEM - Vietnamese
1361	Korean (Johab)
10000	MAC - Roman
10001	MAC - Japanese
10002	MAC - Traditional Chinese (Big5)
10003	MAC - Korean
10004	MAC - Arabic
10005	MAC - Hebrew
10006	MAC - Greek I
10007	MAC - Cyrillic
10008	MAC - Simplified Chinese (GB 2312)
10010	MAC - Romania
10017	MAC - Ukraine
10021	MAC - Thai
10029	MAC - Latin II
10079	MAC - Icelandic
10081	MAC - Turkish
10082	MAC - Croatia
12000	Unicode UCS-4 Little-Endian
12001	Unicode UCS-4 Big-Endian
20000	CNS - Taiwan
20001	TCA - Taiwan
20002	Eten - Taiwan
20003	IBM5550 - Taiwan
20004	TeleText - Taiwan
20005	Wang - Taiwan
20105	IA5 IRV International Alphabet No. 5 (7-bit)
20106	IA5 German (7-bit)
20107	IA5 Swedish (7-bit)
20108	IA5 Norwegian (7-bit)
20127	US-ASCII (7-bit)
20261	T.61
20269	ISO 6937 Non-Spacing Accent
20273	IBM EBCDIC - Germany
20277	IBM EBCDIC - Denmark/Norway
20278	IBM EBCDIC - Finland/Sweden
20280	IBM EBCDIC - Italy
20284	IBM EBCDIC - Latin America/Spain
20285	IBM EBCDIC - United Kingdom
20290	IBM EBCDIC - Japanese Katakana Extended
20297	IBM EBCDIC - France
20420	IBM EBCDIC - Arabic
20423	IBM EBCDIC - Greek
20424	IBM EBCDIC - Hebrew
20833	IBM EBCDIC - Korean Extended
20838	IBM EBCDIC - Thai
20866	Russian - KOI8-R
20871	IBM EBCDIC - Icelandic
20880	IBM EBCDIC - Cyrillic (Russian)
20905	IBM EBCDIC - Turkish
20924	IBM EBCDIC - Latin-1/Open System (1047 + Euro symbol)
20932	JIS X 0208-1990 & 0121-1990
20936	Simplified Chinese (GB2312)
21025	IBM EBCDIC - Cyrillic (Serbian, Bulgarian)
21027	Extended Alpha Lowercase
21866	Ukrainian (KOI8-U)
28591	ISO 8859-1 Latin I
28592	ISO 8859-2 Central Europe
28593	ISO 8859-3 Latin 3
28594	ISO 8859-4 Baltic
28595	ISO 8859-5 Cyrillic
28596	ISO 8859-6 Arabic
28597	ISO 8859-7 Greek
28598	ISO 8859-8 Hebrew
28599	ISO 8859-9 Latin 5
28605	ISO 8859-15 Latin 9
29001	Europa 3
38598	ISO 8859-8 Hebrew
50220	ISO 2022 Japanese with no halfwidth Katakana
50221	ISO 2022 Japanese with halfwidth Katakana
50222	ISO 2022 Japanese JIS X 0201-1989
50225	ISO 2022 Korean
50227	ISO 2022 Simplified Chinese
50229	ISO 2022 Traditional Chinese
50930	Japanese (Katakana) Extended
50931	US/Canada and Japanese
50933	Korean Extended and Korean
50935	Simplified Chinese Extended and Simplified Chinese
50936	Simplified Chinese
50937	US/Canada and Traditional Chinese
50939	Japanese (Latin) Extended and Japanese
51932	EUC - Japanese
51936	EUC - Simplified Chinese
51949	EUC - Korean
51950	EUC - Traditional Chinese
52936	HZ-GB2312 Simplified Chinese
54936	Windows XP: GB18030 Simplified Chinese (4 Byte)
57002	ISCII Devanagari
57003	ISCII Bengali
57004	ISCII Tamil
57005	ISCII Telugu
57006	ISCII Assamese
57007	ISCII Oriya
57008	ISCII Kannada
57009	ISCII Malayalam
57010	ISCII Gujarati
57011	ISCII Punjabi
65000	Unicode UTF-7
65001	Unicode UTF-8

The following is a list of valid code page identifiers for Mac OS only:


Identifier	Name
1	ASCII
2	NEXTSTEP
3	JapaneseEUC
4	UTF8
5	ISOLatin1
6	Symbol
7	NonLossyASCII
8	ShiftJIS
9	ISOLatin2
10	Unicode
11	WindowsCP1251
12	WindowsCP1252
13	WindowsCP1253
14	WindowsCP1254
15	WindowsCP1250
21	ISO2022JP
30	MacOSRoman
10	UTF16String
0x90000100	UTF16BigEndian
0x94000100	UTF16LittleEndian
0x8c000100	UTF32String
0x98000100	UTF32BigEndian
0x9c000100	UTF32LittleEndian
65536	Proprietary

LicenseInfo: Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a class is using. It will return the following information:

Product: The product the license is for.
Product Key: The key the license was generated from.
License Source: Where the license was found (e.g., RuntimeLicense, License File).
License Type: The type of license installed (e.g., Royalty Free, Single Server).
Last Valid Build: The last valid build number for which the license will work.

UseInternalSecurityAPI: Tells the class whether or not to use the system security libraries or an internal implementation.

By default the class will use the system security libraries to perform cryptographic functions where applicable. Setting this to true tells the class to use the internal implementation instead of using the system's security API.

Trappable Errors (XML Class)

XML Errors

101   Invalid attribute index.
102   No attributes available.
103   Invalid namespace index.
104   No namespaces available.
105   Invalid element index.
106   No elements available.
107   Attribute does not exist.
201   Unbalanced element tag.
202   Unknown element prefix (can't find namespace).
203   Unknown attribute prefix (can't find namespace).
204   Invalid XML markup.
205   Invalid end state for parser.
206   Document contains unbalanced elements.
207   Invalid XPath.
208   No such child.
209   Top element does not match start of path.
210   DOM tree unavailable (set BuildDOM to true and reparse).
302   Can't open file.
401   Invalid XML would be generated.
402   An invalid XML name has been specified.


	101 Invalid attribute index.
	102 No attributes available.
	103 Invalid namespace index.
	104 No namespaces available.
	105 Invalid element index.
	106 No elements available.
	107 Attribute does not exist.
	201 Unbalanced element tag.
	202 Unknown element prefix (can't find namespace).
	203 Unknown attribute prefix (can't find namespace).
	204 Invalid XML markup.
	205 Invalid end state for parser.
	206 Document contains unbalanced elements.
	207 Invalid XPath.
	208 No such child.
	209 Top element does not match start of path.
	210 DOM tree unavailable (set BuildDOM to true and reparse).
	302 Can't open file.
	401 Invalid XML would be generated.
	402 An invalid XML name has been specified.

IPWorks 2022 Qt Edition

XML Class

Syntax

Remarks

Parsing XML

Writing XML

Property List

Method List

Event List

Configuration Settings

BuildDOM Property (XML Class)

Syntax

Default Value

Remarks

Data Type

InputData Property (XML Class)

Syntax

Default Value

Remarks

Data Type

InputFile Property (XML Class)

Syntax

Default Value

Remarks

Data Type

NamespaceCount Property (XML Class)

Syntax

Default Value

Remarks

Data Type

NamespacePrefix Property (XML Class)

Syntax

Default Value

Remarks

Data Type

NamespaceURI Property (XML Class)

Syntax

Default Value

Remarks

Data Type

OutputData Property (XML Class)

Syntax

Default Value

Remarks

Data Type

OutputFile Property (XML Class)

Syntax

Default Value

Remarks

Data Type

Overwrite Property (XML Class)

Syntax

Default Value

Remarks

Data Type

Validate Property (XML Class)

Syntax

Default Value

Remarks

Data Type

AttrCount Property (XML Class)

Syntax

Default Value

Remarks

Data Type

AttrName Property (XML Class)

Syntax

Default Value

Remarks

Data Type

AttrNamespace Property (XML Class)

Syntax

Default Value

Remarks

Data Type

AttrPrefix Property (XML Class)

Syntax

Default Value

Remarks

Data Type