pugixml 1.0

int xml_attribute::as_int() const; -unsigned int xml_attribute::as_uint() const; -double xml_attribute::as_double() const; -float xml_attribute::as_float() const; -bool xml_attribute::as_bool() const; +

int xml_attribute::as_int(int def = 0) const;
+unsigned int xml_attribute::as_uint(unsigned int def = 0) const;
+double xml_attribute::as_double(double def = 0) const;
+float xml_attribute::as_float(float def = 0) const;
+bool xml_attribute::as_bool(bool def = false) const;

as_int, as_uint, as_double and as_float convert attribute values to numbers. - If attribute handle is null or attribute value is empty, 0 - is returned. Otherwise, all leading whitespace characters are truncated, - and the remaining string is parsed as a decimal number (as_int - or as_uint) or as a floating - point number in either decimal or scientific form (as_double + If attribute handle is null or attribute value is empty, def + argument is returned (which is 0 by default). Otherwise, all leading whitespace + characters are truncated, and the remaining string is parsed as a decimal + number (as_int or as_uint) or as a floating point number + in either decimal or scientific form (as_double or as_float). Any extra characters are silently discarded, i.e. as_int will return 1 for string "1abc". @@ -241,10 +264,11 @@

for (pugi::xml_node tool: tools.children("Tool")) +{ + std::cout << "Tool:"; + + for (pugi::xml_attribute attr: tool.attributes()) + { + std::cout << " " << attr.name() << "=" << attr.value(); + } + + for (pugi::xml_node child: tool.children()) + { + std::cout << ", child " << child.name(); + } + + std::cout << std::endl; +} +

const char_t* xml_text::as_string(const char_t* def = "") const; +int xml_text::as_int(int def = 0) const; +unsigned int xml_text::as_uint(unsigned int def = 0) const; +double xml_text::as_double(double def = 0) const; +float xml_text::as_float(float def = 0) const; +bool xml_text::as_bool(bool def = false) const; +

std::cout << "Project name: " << project.child("name").text().get() << std::endl; +std::cout << "Project version: " << project.child("version").text().as_double() << std::endl; +std::cout << "Project visibility: " << (project.child("public").text().as_bool(/* def= */ true) ? "public" : "private") << std::endl; +std::cout << "Project description: " << project.child("description").text().get() << std::endl; +

http://pugixml.googlecode.com/files/pugixml-1.0.zip -http://pugixml.googlecode.com/files/pugixml-1.0.tar.gz +

http://pugixml.googlecode.com/files/pugixml-1.2.zip
+http://pugixml.googlecode.com/files/pugixml-1.2.tar.gz

The distribution contains library source, documentation (the manual you're @@ -94,7 +96,7 @@

For example, to checkout the current version, you can use this command:

svn checkout http://pugixml.googlecode.com/svn/tags/release-1.0 pugixml

svn checkout http://pugixml.googlecode.com/svn/tags/release-1.2 pugixml

To checkout the latest version, you can use this command:

@@ -269,6 +271,58 @@

xml_text& xml_text::operator=(const char_t* rhs); +xml_text& xml_text::operator=(int rhs); +xml_text& xml_text::operator=(unsigned int rhs); +xml_text& xml_text::operator=(double rhs); +xml_text& xml_text::operator=(bool rhs); +

// change project version +project.child("version").text() = 1.2; + +// add description element and set the contents +// note that we do not have to explicitly add the node_pcdata child +project.append_child("description").text().set("a test project"); +

Note

+ By default the declaration node is not added to the document during parsing. + If you just need to preserve the original declaration node, you have to + add the flag parse_declaration + to the parsing flags; the resulting document will contain the original + declaration node, which will be output during saving. +

// get a test document +pugi::xml_document doc; +doc.load("<foo bar='baz'><call>hey</call></foo>"); + +// add a custom declaration node +pugi::xml_node decl = doc.prepend_child(pugi::node_declaration); +decl.append_attribute("version") = "1.0"; +decl.append_attribute("encoding") = "UTF-8"; +decl.append_attribute("standalone") = "no"; + +// <?xml version="1.0" encoding="UTF-8" standalone="no"?> +// <foo bar="baz"> +// <call>hey</call> +// </foo> +doc.save(std::cout); +std::cout << std::endl; +

- pugixml 1.0 quick start guide -

Introduction
Installation
Document object model
Loading document
Accessing document data
Modifying document data
Saving document
Feedback
License

- Introduction -

- pugixml is a light-weight C++ XML +pugixml 1.2

pugixml 1.2 quick start guide

Introduction
Installation
Document object model
Loading document
Accessing document data
Modifying document data
Saving document
Feedback
License

Introduction

+ pugixml is a light-weight C++ XML processing library. It consists of a DOM-like interface with rich traversal/modification capabilities, an extremely fast XML parser which constructs the DOM tree from an XML file/buffer, and an XPath 1.0 implementation for complex data-driven @@ -39,54 +10,36 @@ and has many users. All code is distributed under the MIT license, making it completely free to use in both open-source and proprietary applications. -

pugixml enables very fast, convenient and memory-efficient XML document processing. However, since pugixml has a DOM parser, it can't process XML documents that do not fit in memory; also the parser is a non-validating one, so if you need DTD/Schema validation, the library is not for you. -

This is the quick start guide for pugixml, which purpose is to enable you to start using the library quickly. Many important library features are either not described at all or only mentioned briefly; for more complete information - you should read the complete manual. -

- - - - -

Note

+ you should read the complete manual. +

	Note
	No documentation is perfect, neither is this one. If you encounter a description that is unclear, please file an issue as described in Feedback. Also if you can spare the time for a full proof-reading, including spelling and grammar, that would be great! Please send me an e-mail; as a token of appreciation, your name will be included into the corresponding section of the manual. -

- -

- Installation -

Installation

pugixml is distributed in source form. You can download a source distribution via one of the following links: -

http://pugixml.googlecode.com/files/pugixml-1.0.zip
-http://pugixml.googlecode.com/files/pugixml-1.0.tar.gz
-

http://pugixml.googlecode.com/files/pugixml-1.2.zip
+http://pugixml.googlecode.com/files/pugixml-1.2.tar.gz
+

The distribution contains library source, documentation (the guide you're reading now and the manual) and some code examples. After downloading the distribution, install pugixml by extracting all files from the compressed archive. The files have different line endings depending on the archive format - .zip archive has Windows line endings, .tar.gz archive has Unix line endings. Otherwise the files in both archives are identical. -

The complete pugixml source consists of three files - one source file, pugixml.cpp, and two header files, pugixml.hpp and pugiconfig.hpp. pugixml.hpp is the primary header which you need to include in order to use pugixml classes/functions. @@ -95,23 +48,16 @@ can find the header; however you can also use relative path (i.e. #include "../libs/pugixml/src/pugixml.hpp") or include directory-relative path (i.e. #include <xml/thirdparty/pugixml/src/pugixml.hpp>). -

The easiest way to build pugixml is to compile the source file, pugixml.cpp, along with the existing library/executable. This process depends on the method of building your application; for example, if you're using Microsoft Visual Studio^[1], Apple Xcode, Code::Blocks or any other IDE, just add pugixml.cpp to one of your projects. There are other building methods available, including building - pugixml as a standalone static/shared library; read + pugixml as a standalone static/shared library; read the manual for further information. -

- Document object model -

Document object model

pugixml stores XML data in DOM-like way: the entire XML document (both document structure and element data) is stored in memory as a tree. The tree can be loaded from character stream (file, string, C++ I/O stream), then traversed @@ -119,8 +65,7 @@ structure and node/attribute data can be changed at any time. Finally, the result of document transformations can be saved to a character stream (file, C++ I/O stream or custom transport). -

The root of the tree is the document itself, which corresponds to C++ type xml_document. Document has one or more child nodes, which correspond to C++ type xml_node. @@ -128,55 +73,40 @@ of child nodes, a collection of attributes, which correspond to C++ type xml_attribute, and some additional data (i.e. name). -

The most common node types are: -

+
- Document node (node_document) - this is the root of the tree, which consists of several child nodes. This node corresponds to xml_document class; note that xml_document is a sub-class of xml_node, so the entire node interface is also available. -
- +
- Element/tag node (node_element) - this is the most common type of node, which represents XML elements. Element nodes have a name, a collection of attributes and a collection of child nodes (both of which may be empty). The attribute is a simple name/value pair. -
- +
- Plain character data nodes (node_pcdata) represent plain text in XML. PCDATA nodes have a value, but do not have - name or children/attributes. Note that plain character data is not a - part of the element node but instead has its own node; for example, an - element node can have several child PCDATA nodes. -
-
+ name or children/attributes. Note that plain character + data is not a part of the element node but instead has its own node; + for example, an element node can have several child PCDATA nodes. +

Despite the fact that there are several node types, there are only three C++ types representing the tree (xml_document, xml_node, xml_attribute); some operations on xml_node are only valid for certain node types. They are described below. -

- - - - -

Note

	Note
	All pugixml classes and functions are located in `pugi` namespace; you have to either use explicit name qualification (i.e. `pugi::xml_node`), or to gain access to relevant symbols via `using` directive (i.e. `using pugi::xml_node;` or `using namespace pugi;`). -

xml_document is the owner of the entire document structure; destroying the document destroys the whole tree. The interface of xml_document @@ -184,16 +114,14 @@ of xml_node, which allows for document inspection and/or modification. Note that while xml_document is a sub-class of xml_node, xml_node is not a polymorphic type; the inheritance is present only to simplify usage. -

xml_node is the handle to document node; it can point to any node in the document, including document itself. There is a common interface for nodes of all types. Note that xml_node is only a handle to the actual node, not the node itself - you can have several xml_node handles pointing to the same underlying object. Destroying xml_node handle does not destroy the node and does not remove it from the tree. -

There is a special value of xml_node type, known as null node or empty node. It does not correspond to any node in any document, and thus resembles null pointer. However, all operations @@ -206,29 +134,21 @@ don't have to check for errors twice. You can test if a handle is null via implicit boolean cast: if (node) { ... } or if (!node) { ... }. -

xml_attribute is the handle to an XML attribute; it has the same semantics as xml_node, i.e. there can be several xml_attribute handles pointing to the same underlying object and there is a special null attribute value, which propagates to function results. -

There are two choices of interface and internal representation when configuring pugixml: you can either choose the UTF-8 (also called char) interface or UTF-16/32 (also called wchar_t) one. The choice is controlled via PUGIXML_WCHAR_MODE define; you can set it via pugiconfig.hpp or via preprocessor options. All tree functions that work with strings work with either C-style null terminated strings or STL - strings of the selected character type. Read + strings of the selected character type. Read the manual for additional information on Unicode interface. -

- Loading document -

Loading document

pugixml provides several functions for loading XML data from various places - files, C++ iostreams, memory buffers. All functions use an extremely fast non-validating parser. This parser is not fully W3C conformant - it can load @@ -239,36 +159,29 @@ Unicode encodings (UTF-8, UTF-16 (big and little endian), UTF-32 (big and little endian); UCS-2 is naturally supported since it's a strict subset of UTF-16) and handles all encoding conversions automatically. -

The most common source of XML data is files; pugixml provides a separate function for loading XML document from file. This function accepts file path as its first argument, and also two optional arguments, which specify parsing options and input data encoding, which are described in the manual. -

- This is an example of loading XML document from file (samples/load_file.cpp): -

+ This is an example of loading XML document from file (samples/load_file.cpp): +

pugi::xml_document doc;
+
pugi::xml_document doc;
 
 pugi::xml_parse_result result = doc.load_file("tree.xml");
 
 std::cout << "Load result: " << result.description() << ", mesh name: " << doc.child("mesh").attribute("name").value() << std::endl;
-
-
-      
-
+

load_file, as well as other loading functions, destroys the existing document tree and then tries to load the new tree from the specified file. The result of the operation is returned in an xml_parse_result object; this object contains the operation status, and the related information (i.e. last successfully parsed position in the input file, if parsing fails). -

Parsing result object can be implicitly converted to bool; if you do not want to handle parsing errors thoroughly, you can just check the return value of load functions as if it was a bool: @@ -277,14 +190,11 @@ Otherwise you can use the status member to get parsing status, or the description() member function to get the status in a string form. -

- This is an example of handling loading errors (samples/load_error_handling.cpp): -

+ This is an example of handling loading errors (samples/load_error_handling.cpp): +

pugi::xml_document doc;
+
pugi::xml_document doc;
 pugi::xml_parse_result result = doc.load(source);
 
 if (result)
@@ -295,10 +205,8 @@
     std::cout << "Error description: " << result.description() << "\n";
     std::cout << "Error offset: " << result.offset << " (error at [..." << (source + result.offset) << "]\n\n";
 }
-
-
-      
-
+

Sometimes XML data should be loaded from some other source than file, i.e. HTTP URL; also you may want to load XML data from file using non-standard functions, i.e. to use your virtual file system facilities or to load XML @@ -308,8 +216,7 @@ document from C++ IOstream, in which case you should provide an object which implements std::istream or std::wistream interface. -

There are different functions for loading document from memory; they treat the passed buffer as either an immutable one (load_buffer), a mutable buffer which is owned by the caller (load_buffer_inplace), @@ -317,24 +224,18 @@ There is also a simple helper function, xml_document::load, for cases when you want to load the XML document from null-terminated character string. -

This is an example of loading XML document from memory using one of these - functions (samples/load_memory.cpp); + functions (samples/load_memory.cpp); read the sample code for more examples: -

const char source[] = "<mesh name='sphere'><bounds>0 0 1 1</bounds></mesh>";
+
const char source[] = "<mesh name='sphere'><bounds>0 0 1 1</bounds></mesh>";
 size_t size = sizeof(source);
-
-
-      
-
+

// You can use load_buffer_inplace to load document from mutable memory block; the block's lifetime must exceed that of document
+
// You can use load_buffer_inplace to load document from mutable memory block; the block's lifetime must exceed that of document
 char* buffer = new char[size];
 memcpy(buffer, source, size);
 
@@ -343,95 +244,70 @@
 
 // You have to destroy the block yourself after the document is no longer used
 delete[] buffer;
-
-
-      
-
+

This is a simple example of loading XML document from file using streams - (samples/load_stream.cpp); read + (samples/load_stream.cpp); read the sample code for more complex examples involving wide streams and locales: -

std::ifstream stream("weekly-utf-8.xml");
+
std::ifstream stream("weekly-utf-8.xml");
 pugi::xml_parse_result result = doc.load(stream);
-
-
-      
-

- Accessing document data -

Accessing document data

pugixml features an extensive interface for getting various types of data from the document and for traversing the document. You can use various accessors to get node/attribute data, you can traverse the child node/attribute lists via accessors or iterators, you can do depth-first traversals with xml_tree_walker objects, and you can use XPath for complex data-driven queries. -

You can get node or attribute name via name() accessor, and value via value() accessor. Note that both functions never return null pointers - they either return a string with the relevant content, or an empty string if name/value is absent or if the handle is null. Also there are two notable things for reading values: -

+
- It is common to store data as text contents of some node - i.e. <node><description>This is a node</description></node>. In this case, <description> node does not have a value, but instead has a child of type node_pcdata with value "This is a node". - pugixml provides child_value() helper functions to parse such data. -
- + pugixml provides child_value() and text() helper functions to parse such data. +
- In many cases attribute values have types that are not strings - i.e. an attribute may always contain values that should be treated as integers, despite the fact that they are represented as strings in XML. pugixml provides several accessors that convert attribute value to some other type. -
-
- This is an example of using these functions (samples/traverse_base.cpp): -
-
+

+ This is an example of using these functions (samples/traverse_base.cpp): +

for (pugi::xml_node tool = tools.child("Tool"); tool; tool = tool.next_sibling("Tool"))
+
for (pugi::xml_node tool = tools.child("Tool"); tool; tool = tool.next_sibling("Tool"))
 {
     std::cout << "Tool " << tool.attribute("Filename").value();
     std::cout << ": AllowRemote " << tool.attribute("AllowRemote").as_bool();
     std::cout << ", Timeout " << tool.attribute("Timeout").as_int();
     std::cout << ", Description '" << tool.child_value("Description") << "'\n";
 }
-
-
-      
-
+

Since a lot of document traversal consists of finding the node/attribute with the correct name, there are special functions for that purpose. For example, child("Tool") returns the first node which has the name "Tool", or null handle if there is no such node. This is an example of using such - functions (samples/traverse_base.cpp): -

+ functions (samples/traverse_base.cpp): +

std::cout << "Tool for *.dae generation: " << tools.find_child_by_attribute("Tool", "OutputFileMasks", "*.dae").attribute("Filename").value() << "\n";
+
std::cout << "Tool for *.dae generation: " << tools.find_child_by_attribute("Tool", "OutputFileMasks", "*.dae").attribute("Filename").value() << "\n";
 
 for (pugi::xml_node tool = tools.child("Tool"); tool; tool = tool.next_sibling("Tool"))
 {
     std::cout << "Tool " << tool.attribute("Filename").value() << "\n";
 }
-
-
-      
-
+

Child node lists and attribute lists are simply double-linked lists; while you can use previous_sibling/next_sibling and other such functions for iteration, pugixml additionally provides node and attribute iterators, so @@ -440,14 +316,11 @@ iterators are invalidated if the node/attribute objects they're pointing to are removed from the tree; adding nodes/attributes does not invalidate any iterators. -

- Here is an example of using iterators for document traversal (samples/traverse_iter.cpp): -

+ Here is an example of using iterators for document traversal (samples/traverse_iter.cpp): +

for (pugi::xml_node_iterator it = tools.begin(); it != tools.end(); ++it)
+
for (pugi::xml_node_iterator it = tools.begin(); it != tools.end(); ++it)
 {
     std::cout << "Tool:";
 
@@ -458,10 +331,37 @@
 
     std::cout << std::endl;
 }
-
-
-      
-
+

+ If your C++ compiler supports range-based for-loop (this is a C++11 feature, + at the time of writing it's supported by Microsoft Visual Studio 11 Beta, + GCC 4.6 and Clang 3.0), you can use it to enumerate nodes/attributes. Additional + helpers are provided to support this; note that they are also compatible + with Boost Foreach, + and possibly other pre-C++11 foreach facilities. +

+ Here is an example of using C++11 range-based for loop for document traversal + (samples/traverse_rangefor.cpp): +

+ +

for (pugi::xml_node tool: tools.children("Tool"))
+{
+    std::cout << "Tool:";
+
+    for (pugi::xml_attribute attr: tool.attributes())
+    {
+        std::cout << " " << attr.name() << "=" << attr.value();
+    }
+
+    for (pugi::xml_node child: tool.children())
+    {
+        std::cout << ", child " << child.name();
+    }
+
+    std::cout << std::endl;
+}
+

The methods described above allow traversal of immediate children of some node; if you want to do a deep tree traversal, you'll have to do it via a recursive function or some equivalent method. However, pugixml provides a @@ -469,14 +369,11 @@ to implement xml_tree_walker interface and to call traverse function. -

- This is an example of traversing tree hierarchy with xml_tree_walker (samples/traverse_walker.cpp): -

+ This is an example of traversing tree hierarchy with xml_tree_walker (samples/traverse_walker.cpp): +

struct simple_walker: pugi::xml_tree_walker
+
struct simple_walker: pugi::xml_tree_walker
 {
     virtual bool for_each(pugi::xml_node& node)
     {
@@ -487,27 +384,20 @@
         return true; // continue traversal
     }
 };
-
-
-      
-
+

simple_walker walker;
+
simple_walker walker;
 doc.traverse(walker);
-
-
-      
-
+

Finally, for complex queries often a higher-level DSL is needed. pugixml provides an implementation of XPath 1.0 language for such queries. The complete description of XPath usage can be found in the manual, but here are some examples: -

pugi::xpath_node_set tools = doc.select_nodes("/Profile/Tools/Tool[@AllowRemote='true' and @DeriveCaptionFrom='lastparam']");
+
pugi::xpath_node_set tools = doc.select_nodes("/Profile/Tools/Tool[@AllowRemote='true' and @DeriveCaptionFrom='lastparam']");
 
 std::cout << "Tools:";
 
@@ -520,25 +410,11 @@
 pugi::xpath_node build_tool = doc.select_single_node("//Tool[contains(Description, 'build system')]");
 
 std::cout << "\nBuild tool: " << build_tool.node().attribute("Filename").value() << "\n";
-
-
-      
-
-
-
-
-
- Caution

+

+      

- Caution

           XPath functions throw xpath_exception
           objects on error; the sample above does not catch these exceptions.
-        
-
-
-
- Modifying document data
-
-
+

Modifying document data

The document in pugixml is fully mutable: you can completely change the document structure and modify the data of nodes/attributes. All functions take care of memory management and structural integrity themselves, so they always @@ -549,27 +425,23 @@ memory you can create documents from scratch with pugixml and later save them to file/stream instead of relying on error-prone manual text writing and without too much overhead. -

All member functions that change node/attribute data or structure are non-constant and thus can not be called on constant handles. However, you can easily convert constant handle to non-constant one by simple assignment: void foo(const pugi::xml_node& n) { pugi::xml_node nc = n; }, so const-correctness here mainly provides additional documentation. -

As discussed before, nodes can have name and value, both of which are strings. Depending on node type, name or value may be absent. You can use set_name and set_value member functions to set them. Similar functions are available for attributes; however, the set_value function is overloaded for some other types except strings, like floating-point numbers. Also, attribute value can be set using an assignment operator. This is an - example of setting node/attribute name and value (samples/modify_base.cpp): -

+ example of setting node/attribute name and value (samples/modify_base.cpp): +

pugi::xml_node node = doc.child("node");
+
pugi::xml_node node = doc.child("node");
 
 // change node name
 std::cout << node.set_name("notnode");
@@ -581,13 +453,10 @@
 
 // we can't change value of the element or name of the comment
 std::cout << node.set_value("1") << ", " << doc.last_child().set_name("2") << std::endl;
-
-
-      
-
+

pugi::xml_attribute attr = node.attribute("id");
+
pugi::xml_attribute attr = node.attribute("id");
 
 // change attribute name/value
 std::cout << attr.set_name("key") << ", " << attr.set_value("345");
@@ -600,10 +469,8 @@
 // we can also use assignment operators for more concise code
 attr = true;
 std::cout << "final attribute value: " << attr.value() << std::endl;
-
-
-      
-
+

Nodes and attributes do not exist without a document tree, so you can't create them without adding them to some document. A node or attribute can be created at the end of node/attribute list or before/after some other node. All insertion @@ -611,26 +478,16 @@ handle on failure. Even if the operation fails (for example, if you're trying to add a child node to PCDATA node), the document remains in consistent state, but the requested node/attribute is not added. -

- - - - -

Caution

	Caution
	attribute() and child() functions do not add attributes or nodes to the tree, so code like `node.attribute("id") = 123;` will not do anything if `node` does not have an attribute with name `"id"`. Make sure you're operating with existing attributes/nodes by adding them if necessary. -

- This is an example of adding new attributes/nodes to the document (samples/modify_add.cpp): -

+ This is an example of adding new attributes/nodes to the document (samples/modify_add.cpp): +

// add node with some name
+
// add node with some name
 pugi::xml_node node = doc.append_child("node");
 
 // add description node with text child
@@ -644,10 +501,8 @@
 param.append_attribute("name") = "version";
 param.append_attribute("value") = 1.1;
 param.insert_attribute_after("type", param.attribute("name")) = "float";
-
-
-      
-
+

If you do not want your document to contain some node or attribute, you can remove it with remove_attribute and remove_child functions. @@ -656,14 +511,11 @@ node also invalidates all past-the-end iterators to its attribute or child node list. Be careful to ensure that all such handles and iterators either do not exist or are not used after the attribute/node is removed. -

- This is an example of removing attributes/nodes from the document (samples/modify_remove.cpp): -

+ This is an example of removing attributes/nodes from the document (samples/modify_remove.cpp): +

// remove description node with the whole subtree
+
// remove description node with the whole subtree
 pugi::xml_node node = doc.child("node");
 node.remove_child("description");
 
@@ -674,15 +526,8 @@
 // we can also remove nodes/attributes by handles
 pugi::xml_attribute id = param.attribute("name");
 param.remove_attribute(id);
-
-
-      
-

- Saving document -

Saving document

Often after creating a new document or loading the existing one and processing it, it is necessary to save the result back to file. Also it is occasionally useful to output the whole document or a subtree to some stream; use cases @@ -691,28 +536,22 @@ the document to a file, stream or another generic transport interface; these functions allow to customize the output format, and also perform necessary encoding conversions. -

Before writing to the destination the node/attribute data is properly formatted according to the node type; all special XML symbols, such as < and &, are properly escaped. In order to guard against forgotten node/attribute names, empty node/attribute names are printed as ":anonymous". For well-formed output, make sure all node and attribute names are set to meaningful values. -

If you want to save the whole document to a file, you can use the save_file function, which returns true on success. This is a simple example - of saving XML document to file (samples/save_file.cpp): -

+ of saving XML document to file (samples/save_file.cpp): +

// save document to file
+
// save document to file
 std::cout << "Saving result: " << doc.save_file("save_file_output.xml") << std::endl;
-
-
-      
-
+

To enhance interoperability pugixml provides functions for saving document to any object which implements C++ std::ostream interface. This allows you to save documents to any standard C++ stream (i.e. @@ -720,20 +559,15 @@ Most notably, this allows for easy debug output, since you can use std::cout stream as saving target. There are two functions, one works with narrow character streams, another handles wide character ones. -

- This is a simple example of saving XML document to standard output (samples/save_stream.cpp): -

+ This is a simple example of saving XML document to standard output (samples/save_stream.cpp): +

// save document to standard output
+
// save document to standard output
 std::cout << "Document:\n";
 doc.save(std::cout);
-
-
-      
-
+

All of the above saving functions are implemented in terms of writer interface. This is a simple interface with a single function, which is called several times during output process with chunks of document data as input. In order @@ -741,16 +575,13 @@ should create an object which implements xml_writer_file interface and pass it to xml_document::save function. -

This is a simple example of custom writer for saving document data to STL - string (samples/save_custom_writer.cpp); + string (samples/save_custom_writer.cpp); read the sample code for more complex examples: -

struct xml_string_writer: pugi::xml_writer
+
struct xml_string_writer: pugi::xml_writer
 {
     std::string result;
 
@@ -759,58 +590,38 @@
         result += std::string(static_cast<const char*>(data), size);
     }
 };
-
-
-      
-
+

While the previously described functions save the whole document to the destination, it is easy to save a single subtree. Instead of calling xml_document::save, just call xml_node::print function on the target node. You can save node contents to C++ IOstream object or custom writer in this way. - Saving a subtree slightly differs from saving the whole document; read the manual for + Saving a subtree slightly differs from saving the whole document; read the manual for more information. -

- Feedback -

- If you believe you've found a bug in pugixml, please file an issue via issue submission form. +

Feedback

+ If you believe you've found a bug in pugixml, please file an issue via issue submission form. Be sure to include the relevant information so that the bug can be reproduced: the version of pugixml, compiler version and target architecture, the code that uses pugixml and exhibits the bug, etc. Feature requests and contributions can be filed as issues, too. -

If filing an issue is not possible due to privacy or other concerns, you - can contact pugixml author by e-mail directly: arseny.kapoulkine@gmail.com. -

- License -

+ can contact pugixml author by e-mail directly: arseny.kapoulkine@gmail.com. +

License

The pugixml library is distributed under the MIT license: -

-
- Copyright (c) 2006-2010 Arseny Kapoulkine -
-
+
+ Copyright (c) 2006-2012 Arseny Kapoulkine +
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 @@ -818,28 +629,12 @@ 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. -
-
-
+

This means that you can freely use pugixml in your applications, both open-source and proprietary. If you use pugixml in a product, it is sufficient to add an acknowledgment like this to the product distribution: -

+
This software is based on pugixml library (http://pugixml.org).
pugixml - is Copyright (C) 2006-2010 Arseny Kapoulkine. -
-

^[1]All trademarks used are properties of their respective owners.

- - - -

Last revised: October 31, 2010 at 07:44:52 GMT

^[1]All trademarks used are properties of their respective owners.

+ Range-based for-loop support +

Traversing node/attribute lists via iterators

+ Working with text contents +

Miscellaneous functions

Changelog

+ 1.05.2012 - version + 1.2 +

+ Memory consumption tuning +

Document memory management internals

+ Using pugixml in header-only + mode +

Additional configuration @@ -337,6 +391,12 @@ the consistency rule.

+ Working with text contents +

Cloning nodes/attributes

+ Customizing document declaration +

- pugixml 1.0 quick start guide -

- Introduction -

pugixml 1.2 quick start guide

Introduction

- Installation -

Installation

- Document object model -

Document object model

- Loading document -

Loading document

- Accessing document data -

Accessing document data

- Modifying document data -

Modifying document data

- Saving document -

Saving document

- Feedback -

Feedback

- License -

License