Crate xmlparser

xmlparser is a low-level, pull-based, zero-allocation XML 1.0 parser.

Example

for token in xmlparser::Tokenizer::from("<tagname name='value'/>") {
    println!("{:?}", token);
}

Why a new library?

This library is basically a low-level XML tokenizer that preserves the positions of the tokens and is not intended to be used directly. If you are looking for a higher level solution, check out roxmltree.

Benefits

• All tokens contain StrSpan structs which represent the position of the substring in the original document.
• Good error processing. All error types contain the position (line:column) where it occurred.
• No heap allocations.
• No dependencies.
• Tiny. ~1400 LOC and ~30KiB in the release build according to cargo-bloat.
• Supports no_std builds. To use without the standard library, disable the default features.

Limitations

• Currently, only ENTITY objects are parsed from the DOCTYPE. All others are ignored.
• No tree structure validation. So an XML like <root><child></root></child> or a string without root element will be parsed without errors. You should check for this manually. On the other hand <a/><a/> will lead to an error.
• Duplicated attributes is not an error. So XML like <item a="v1" a="v2"/> will be parsed without errors. You should check for this manually.
• UTF-8 only.

Safety

• The library must not panic. Any panic is considered a critical bug and should be reported.
• The library forbids unsafe code.

Structs

• StrSpan
  A string slice.
• Stream
  A streaming XML parsing interface.
• TextPos
  Position in text.
• Tokenizer
  Tokenizer for the XML structure.

Enums

• ElementEnd
  ElementEnd token.
• EntityDefinition
  Representation of the EntityDef value.
• Error
  An XML parser errors.
• ExternalId
  Representation of the ExternalID value.
• Reference
  Representation of the Reference value.
• StreamError
  A stream parser errors.
• Token
  An XML token.

Traits

• XmlByteExt
  Extension methods for XML-subset only operations.
• XmlCharExt
  Extension methods for XML-subset only operations.