Struct AssFormat 

pub struct AssFormat;

Subtitle format implementation for ASS/SSA.

The AssFormat struct implements parsing, serialization, and detection for the ASS/SSA subtitle format. The actual logic is delegated to the parser, serializer, and time submodules.

Trait Implementations

impl SubtitleFormat for AssFormat

fn parse(&self, content: &str) -> Result<Subtitle>

Parse ASS/SSA subtitle content into a Subtitle.

Malformed-input dispositions

Per the subtitle-parser-hardening capability matrix, this parser classifies malformed inputs as follows:

Scenario	Disposition
Empty input	return SubXError::SubtitleFormat
Missing [Events] section	return SubXError::SubtitleFormat
UTF-8 BOM prefix on valid content	consumed; parse continues
UTF-8 BOM prefix on invalid content	return SubXError::SubtitleFormat
Format: line missing Start, End, or Text	return SubXError::SubtitleFormat
Dialogue: row column count mismatches Format:	skip-and-continue (debug!)
Negative timestamp on a Dialogue: row	skip-and-continue (debug!)
Timestamp arithmetic overflow	return SubXError::SubtitleFormat
Cue body exceeding MAX_CUE_BYTES (1 MiB)	return SubXError::SubtitleFormat

fn serialize(&self, subtitle: &Subtitle) -> Result<String>

Serialize a Subtitle structure into format-specific text representation.

fn detect(&self, content: &str) -> bool

Detect whether the provided content matches this subtitle format.

fn format_name(&self) -> &'static str

Returns the human-readable name of this subtitle format.

fn file_extensions(&self) -> &'static [&'static str]

Returns the list of supported file extensions for this format.

fn supports_styling(&self) -> bool

Check if this format supports advanced styling features.

fn uses_frame_timing(&self) -> bool

Check if this format uses frame-based timing.