sixel-tokenizer-0.1.0/.cargo_vcs_info.json0000644000000001360000000000100141660ustar { "git": { "sha1": "6a8f5b55c3c8122881577a26e7d53113e76af755" }, "path_in_vcs": "" }sixel-tokenizer-0.1.0/.gitignore000064400000000000000000000001320072674642500147720ustar 00000000000000target/ *.new .vscode .vim .DS_Store /assets/man/zellij.1 # nix .direnv/ result result-* sixel-tokenizer-0.1.0/Cargo.toml0000644000000015640000000000100121720ustar # THIS FILE IS AUTOMATICALLY GENERATED BY CARGO # # When uploading crates to the registry Cargo will automatically # "normalize" Cargo.toml files for maximal compatibility # with all versions of Cargo and also rewrite `path` dependencies # to registry (e.g., crates.io) dependencies. # # If you are reading this file be aware that the original Cargo.toml # will likely look very different (and much more reasonable). # See Cargo.toml.orig for the original contents. [package] edition = "2021" name = "sixel-tokenizer" version = "0.1.0" authors = ["Aram Drevekenin "] description = "A tokenizer for serialized Sixel bytes" readme = "README.md" license = "MIT" repository = "https://github.com/zellij-org/sixel-tokenizer" resolver = "2" [dependencies.arrayvec] version = "0.7.2" [dependencies.thiserror] version = "1.0.30" [dev-dependencies.insta] version = "1.14.0" sixel-tokenizer-0.1.0/Cargo.toml.orig000064400000000000000000000005250072674642500156770ustar 00000000000000[package] name = "sixel-tokenizer" description = "A tokenizer for serialized Sixel bytes" authors = ["Aram Drevekenin "] license = "MIT" repository = "https://github.com/zellij-org/sixel-tokenizer" version = "0.1.0" edition = "2021" [dependencies] arrayvec = "0.7.2" thiserror = "1.0.30" [dev-dependencies] insta = "1.14.0" sixel-tokenizer-0.1.0/LICENSE.md000064400000000000000000000020640072674642500144140ustar 00000000000000MIT License Copyright (c) 2022 Zellij contributors 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 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 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. sixel-tokenizer-0.1.0/README.md000064400000000000000000000031500072674642500142640ustar 00000000000000# sixel-tokenizer This is a tokenizer for serialized Sixel images, for more info on the protocol, see: https://vt100.net/docs/vt3xx-gp/chapter14.html `Parser` should be given sixel bytes one by one and a callback. The callback is called with a `SixelEvent` zero or more times per byte when relevant. # Example ```rust use sixel_tokenizer::Parser; fn main() { let sample = " \u{1b}Pq \"2;1;100;200 #0;2;0;0;0#1;2;100;100;0#2;2;0;100;0 #1~~@@vv@@~~@@~~$ #2??}}GG}}??}}??- #1!14@ \u{1b}\\ "; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let mut snapshot = String::new(); for event in events { snapshot.push_str(&format!("{:?}", event)); snapshot.push('\n'); } println!("{}", snapshot); } ``` This program will print: ```text Dcs { macro_parameter: None, transparent_background: None, horizontal_pixel_distance: None } RasterAttribute { pan: 2, pad: 1, ph: Some(100), pv: Some(200) } ColorIntroducer { color_number: 0, color_coordinate_system: Some(RGB(0, 0, 0)) } ColorIntroducer { color_number: 1, color_coordinate_system: Some(RGB(100, 100, 0)) } ColorIntroducer { color_number: 2, color_coordinate_system: Some(RGB(0, 100, 0)) } ColorIntroducer { color_number: 1, color_coordinate_system: None } Data { byte: 126 } ... GotoNextLine ColorIntroducer { color_number: 1, color_coordinate_system: None } Repeat { repeat_count: 14, byte_to_repeat: 64 } End ``` # License MIT sixel-tokenizer-0.1.0/src/lib.rs000064400000000000000000000245430072674642500147210ustar 00000000000000//! This is a tokenizer for serialized Sixel images, for more info on the protocol, see: //! //! [`Parser`] should be given sixel bytes one by one and a callback. The callback is called with a //! [`SixelEvent`] zero or more times per byte when relevant. //! //! # Example //! ```rust //! use sixel_tokenizer::Parser; //! //! fn main() { //! let sample = " //! \u{1b}Pq //! \"2;1;100;200 //! #0;2;0;0;0#1;2;100;100;0#2;2;0;100;0 //! #1~~@@vv@@~~@@~~$ //! #2??}}GG}}??}}??- //! #1!14@ //! \u{1b}\\ //! "; //! let sample_bytes = sample.as_bytes(); //! let mut events = vec![]; //! let mut parser = Parser::new(); //! for byte in sample_bytes { //! parser.advance(&byte, |sixel_event| events.push(sixel_event)); //! } //! let mut snapshot = String::new(); //! for event in events { //! snapshot.push_str(&format!("{:?}", event)); //! snapshot.push('\n'); //! } //! println!("{}", snapshot); //! } //! ``` //! //! This program will print: //! ```text //! Dcs { macro_parameter: None, transparent_background: None, horizontal_pixel_distance: None } //! RasterAttribute { pan: 2, pad: 1, ph: Some(100), pv: Some(200) } //! ColorIntroducer { color_number: 0, color_coordinate_system: Some(RGB(0, 0, 0)) } //! ColorIntroducer { color_number: 1, color_coordinate_system: Some(RGB(100, 100, 0)) } //! ColorIntroducer { color_number: 2, color_coordinate_system: Some(RGB(0, 100, 0)) } //! ColorIntroducer { color_number: 1, color_coordinate_system: None } //! Data { byte: 126 } //! ... //! GotoNextLine //! ColorIntroducer { color_number: 1, color_coordinate_system: None } //! Repeat { repeat_count: 14, byte_to_repeat: 64 } //! End //! ``` use std::num::ParseIntError; use std::str::Utf8Error; use arrayvec::{ArrayVec, CapacityError}; use thiserror::Error; mod sixel_event; pub use sixel_event::SixelEvent; pub use sixel_event::ColorCoordinateSystem; #[derive(Error, Debug)] pub enum ParserError { #[error("Failed to parse")] ParsingError, #[error("Failed to parse")] CapacityError(#[from] CapacityError>), #[error("Failed to parse")] CapacityErrorU8(#[from] CapacityError), #[error("Failed to parse")] Utf8Error(#[from] Utf8Error), #[error("Failed to parse")] ParseIntError(#[from] ParseIntError), } #[derive(Clone, Copy, Debug)] pub enum ParserState { Ground, DeviceControlString, EscapeCharacter, ColorIntroducer, RasterAttribute, GraphicsRepeatIntroducer, UnknownSequence, } #[derive(Clone, Debug)] pub struct Parser { state: ParserState, raw_instruction: ArrayVec, pending_event_fields: ArrayVec, 5>, currently_parsing: ArrayVec, } impl Parser { pub fn new() -> Self { Parser { state: ParserState::Ground, raw_instruction: ArrayVec::new(), pending_event_fields: ArrayVec::new(), currently_parsing: ArrayVec::new(), } } pub fn advance(&mut self, byte: &u8, mut cb: impl FnMut(SixelEvent)) { if byte == &b' ' || byte == &b'\n' || byte == &b'\t' { // ignore whitespace return; } if let Err(e) = self.process_byte(*byte, &mut cb) { self.handle_error(e, Some(*byte), &mut cb); } } fn process_byte( &mut self, byte: u8, mut cb: impl FnMut(SixelEvent), ) -> Result<(), ParserError> { match (self.state, byte) { (ParserState::EscapeCharacter, b'P') => self.raw_instruction.try_push(byte)?, (ParserState::EscapeCharacter, b'\\') => self.emit_end_sequence(&mut cb)?, (ParserState::DeviceControlString, b'q') => self.emit_dcs_event(&mut cb)?, (ParserState::GraphicsRepeatIntroducer, b'?'..=b'~') => { self.emit_repeat_introducer_event(byte, &mut cb)? } (_, b'?'..=b'~' | b'$' | b'-') => { self.emit_possible_pending_event(&mut cb); self.emit_single_byte_event(byte, &mut cb)?; } (_, b';') => { self.raw_instruction.try_push(byte)?; self.finalize_field()?; } (_, b'0'..=b'9') => { self.raw_instruction.try_push(byte)?; self.currently_parsing.try_push(byte)?; } _ => { self.emit_possible_pending_event(&mut cb); self.raw_instruction.try_push(byte)?; } }; self.move_to_next_state(byte); Ok(()) } fn move_to_next_state(&mut self, byte: u8) { self.state = match (self.state, byte) { (ParserState::EscapeCharacter, b'P') => ParserState::DeviceControlString, (ParserState::EscapeCharacter, b'\\') | (ParserState::DeviceControlString, b'q') | (ParserState::GraphicsRepeatIntroducer, b'?'..=b'~') => ParserState::Ground, (_, b'?'..=b'~' | b'$' | b'-') => ParserState::Ground, (_, b'#') => ParserState::ColorIntroducer, (_, b'"') => ParserState::RasterAttribute, (_, b'!') => ParserState::GraphicsRepeatIntroducer, (_, b';' | b'0'..=b'9') => self.state, (_, 27) => ParserState::EscapeCharacter, _ => ParserState::UnknownSequence, }; } fn handle_error(&mut self, err: ParserError, byte: Option, cb: impl FnMut(SixelEvent)) { match err { _ => { self.state = ParserState::UnknownSequence; self.pending_event_fields.clear(); self.currently_parsing.clear(); self.emit_unknown_sequences(cb, byte); } } } fn emit_dcs_event(&mut self, mut cb: impl FnMut(SixelEvent)) -> Result<(), ParserError> { self.finalize_field()?; let event = SixelEvent::dcs_from_fields(&mut self.pending_event_fields)?; self.raw_instruction.clear(); cb(event); Ok(()) } fn emit_end_sequence(&mut self, mut cb: impl FnMut(SixelEvent)) -> Result<(), ParserError> { self.finalize_field()?; self.clear(); cb(SixelEvent::End); Ok(()) } fn emit_repeat_introducer_event( &mut self, byte: u8, mut cb: impl FnMut(SixelEvent), ) -> Result<(), ParserError> { self.finalize_field()?; let event = SixelEvent::repeat_from_fields(&mut self.pending_event_fields, byte)?; self.raw_instruction.clear(); cb(event); Ok(()) } fn emit_possible_pending_event(&mut self, mut cb: impl FnMut(SixelEvent)) { match self.possible_pending_event() { Ok(Some(event)) => cb(event), Ok(None) => {} Err(e) => self.handle_error(e, None, &mut cb), } } fn emit_single_byte_event( &mut self, byte: u8, mut cb: impl FnMut(SixelEvent), ) -> Result<(), ParserError> { let event = match byte { b'?'..=b'~' => self.sixel_data_event(byte), b'$' => self.beginning_of_line_event(), b'-' => self.next_line_event(), _ => Err(ParserError::ParsingError), }; cb(event?); Ok(()) } fn emit_unknown_sequences(&mut self, mut cb: impl FnMut(SixelEvent), last_byte: Option) { loop { let mut bytes: [Option; 5] = Default::default(); let unknown_sequence_elements = if self.raw_instruction.len() >= 5 { self.raw_instruction.drain(..5).chain(None) } else { self.raw_instruction.drain(..).chain(last_byte) }; for (i, byte) in unknown_sequence_elements.enumerate() { bytes[i] = Some(byte); } cb(SixelEvent::UnknownSequence(bytes)); if self.raw_instruction.is_empty() { break; } } } fn color_introducer_event(&mut self) -> Result { self.finalize_field()?; let event = SixelEvent::color_introducer_from_fields(&mut self.pending_event_fields)?; self.raw_instruction.clear(); Ok(event) } fn raster_attribute_event(&mut self) -> Result { self.finalize_field()?; let event = SixelEvent::raster_attribute_from_fields(&mut self.pending_event_fields)?; self.raw_instruction.clear(); Ok(event) } fn sixel_data_event(&mut self, byte: u8) -> Result { self.finalize_field()?; self.raw_instruction.clear(); Ok(SixelEvent::Data { byte }) } fn beginning_of_line_event(&mut self) -> Result { self.raw_instruction.clear(); Ok(SixelEvent::GotoBeginningOfLine) } fn next_line_event(&mut self) -> Result { self.raw_instruction.clear(); Ok(SixelEvent::GotoNextLine) } fn possible_pending_event(&mut self) -> Result, ParserError> { let has_pending_event = !self.currently_parsing.is_empty() || !self.pending_event_fields.is_empty() || !self.raw_instruction.is_empty(); if has_pending_event { match self.state { ParserState::ColorIntroducer => { let event = self.color_introducer_event()?; Ok(Some(event)) } ParserState::RasterAttribute => { let event = self.raster_attribute_event()?; Ok(Some(event)) } _ => Err(ParserError::ParsingError), } } else { Ok(None) } } fn finalize_field(&mut self) -> Result<(), ParserError> { if !self.currently_parsing.is_empty() { let mut field: ArrayVec = Default::default(); for byte in self.currently_parsing.drain(..) { // we don't use collect here because ArrayVec doesn't implement Try and so // we wouldn't be able to propagate errors field.try_push(byte)?; } self.pending_event_fields.try_push(field)?; } Ok(()) } fn clear(&mut self) { drop(std::mem::replace(self, Parser::new())); } } #[cfg(test)] #[path = "./tests.rs"] mod tests; sixel-tokenizer-0.1.0/src/sixel_event.rs000064400000000000000000000167310072674642500165000ustar 00000000000000use arrayvec::ArrayVec; use std::str; use crate::ParserError; #[derive(Clone, Copy, Debug, PartialEq, Eq)] pub enum SixelEvent { ColorIntroducer { color_number: u16, color_coordinate_system: Option, }, RasterAttribute { pan: usize, pad: usize, ph: Option, pv: Option, }, Data { byte: u8, }, Repeat { repeat_count: usize, byte_to_repeat: u8, }, Dcs { macro_parameter: Option, transparent_background: Option, horizontal_pixel_distance: Option, }, GotoBeginningOfLine, GotoNextLine, UnknownSequence([Option; 5]), End, } impl SixelEvent { pub fn new_dcs( macro_parameter: Option, transparent_background: Option, horizontal_pixel_distance: Option, ) -> SixelEvent { SixelEvent::Dcs { macro_parameter, transparent_background, horizontal_pixel_distance, } } pub fn new_color_introducer( color_number: u16, coordinate_system_indicator: Option, x: Option, y: Option, z: Option, ) -> Result { match (coordinate_system_indicator, x, y, z) { (Some(coordinate_system_indicator), Some(x), Some(y), Some(z)) => { let event = SixelEvent::ColorIntroducer { color_number, color_coordinate_system: Some(ColorCoordinateSystem::new( coordinate_system_indicator, x, y, z, )?), }; Ok(event) } (None, None, None, None) => { let event = SixelEvent::ColorIntroducer { color_number, color_coordinate_system: None, }; Ok(event) } _ => Err(ParserError::ParsingError), } } pub fn color_introducer_from_fields( pending_event_fields: &mut ArrayVec, 5>, ) -> Result { let mut byte_fields = pending_event_fields.drain(..); let color_number = mandatory_field_u16(byte_fields.next())?; let coordinate_system_indicator = optional_field(byte_fields.next())?; let x = optional_usize_field(byte_fields.next())?; let y = optional_usize_field(byte_fields.next())?; let z = optional_usize_field(byte_fields.next())?; match (coordinate_system_indicator, x, y, z) { (Some(coordinate_system_indicator), Some(x), Some(y), Some(z)) => { let event = SixelEvent::ColorIntroducer { color_number, color_coordinate_system: Some(ColorCoordinateSystem::new( coordinate_system_indicator, x, y, z, )?), }; Ok(event) } (None, None, None, None) => { let event = SixelEvent::ColorIntroducer { color_number, color_coordinate_system: None, }; Ok(event) } _ => Err(ParserError::ParsingError), } } pub fn new_raster( pan: usize, pad: usize, ph: Option, pv: Option, ) -> Result { let event = SixelEvent::RasterAttribute { pan, pad, ph, pv }; Ok(event) } pub fn raster_attribute_from_fields( pending_event_fields: &mut ArrayVec, 5>, ) -> Result { let mut byte_fields = pending_event_fields.drain(..); let pan = mandatory_usize_field(byte_fields.next())?; let pad = mandatory_usize_field(byte_fields.next())?; let ph = optional_usize_field(byte_fields.next())?; let pv = optional_usize_field(byte_fields.next())?; if byte_fields.next().is_some() { return Err(ParserError::ParsingError); } let event = SixelEvent::RasterAttribute { pan, pad, ph, pv }; Ok(event) } pub fn dcs_from_fields( pending_event_fields: &mut ArrayVec, 5>, ) -> Result { let mut byte_fields = pending_event_fields.drain(..); let macro_parameter = optional_field(byte_fields.next())?; let transparent_background = optional_field(byte_fields.next())?; let horizontal_pixel_distance = optional_usize_field(byte_fields.next())?; if byte_fields.next().is_some() { return Err(ParserError::ParsingError); } let event = SixelEvent::Dcs { macro_parameter, transparent_background, horizontal_pixel_distance, }; Ok(event) } pub fn new_repeat(repeat_count: usize, byte_to_repeat: u8) -> Result { let event = SixelEvent::Repeat { repeat_count, byte_to_repeat, }; Ok(event) } pub fn repeat_from_fields( pending_event_fields: &mut ArrayVec, 5>, byte_to_repeat: u8, ) -> Result { let mut byte_fields = pending_event_fields.drain(..); let repeat_count = mandatory_usize_field(byte_fields.next())?; if byte_fields.next().is_some() { return Err(ParserError::ParsingError); } let event = SixelEvent::Repeat { repeat_count: repeat_count.into(), byte_to_repeat, }; Ok(event) } } #[derive(Clone, Copy, Debug, PartialEq, Eq)] pub enum ColorCoordinateSystem { HLS(usize, usize, usize), RGB(usize, usize, usize), } impl ColorCoordinateSystem { pub fn new( coordinate_system_indicator: u8, x: usize, y: usize, z: usize, ) -> Result { match coordinate_system_indicator { 1 => Ok(ColorCoordinateSystem::HLS(x, y, z)), 2 => Ok(ColorCoordinateSystem::RGB(x, y, z)), _ => Err(ParserError::ParsingError), } } } fn bytes_to_u8(bytes: ArrayVec) -> Result { Ok(u8::from_str_radix(str::from_utf8(&bytes)?, 10)?) } fn bytes_to_u16(bytes: ArrayVec) -> Result { Ok(u16::from_str_radix(str::from_utf8(&bytes)?, 10)?) } fn bytes_to_usize(bytes: ArrayVec) -> Result { Ok(usize::from_str_radix(str::from_utf8(&bytes)?, 10)?) } fn mandatory_field_u16(field: Option>) -> Result { bytes_to_u16(field.ok_or(ParserError::ParsingError)?) } fn mandatory_usize_field(field: Option>) -> Result { bytes_to_usize(field.ok_or(ParserError::ParsingError)?) } fn optional_field(field: Option>) -> Result, ParserError> { match field { Some(field) => { let parsed = bytes_to_u8(field)?; Ok(Some(parsed)) } None => Ok(None), } } fn optional_usize_field(field: Option>) -> Result, ParserError> { match field { Some(field) => { let parsed = bytes_to_usize(field)?; Ok(Some(parsed)) } None => Ok(None), } } sixel-tokenizer-0.1.0/src/snapshots/sixel_machine__tests__basic_sample.snap000064400000000000000000000023770072674642500255450ustar 00000000000000--- source: src/./tests.rs assertion_line: 31 expression: snapshot --- Dcs { macro_parameter: None, inverse_background: None, horizontal_pixel_distance: None } RasterAttribute { pan: 2, pad: 1, ph: Some(100), pv: Some(200) } ColorIntroducer { color_number: 0, color_coordinate_system: Some(RGB(0, 0, 0)) } ColorIntroducer { color_number: 1, color_coordinate_system: Some(RGB(100, 100, 0)) } ColorIntroducer { color_number: 2, color_coordinate_system: Some(RGB(0, 100, 0)) } ColorIntroducer { color_number: 1, color_coordinate_system: None } Data { byte: 126 } Data { byte: 126 } Data { byte: 64 } Data { byte: 64 } Data { byte: 118 } Data { byte: 118 } Data { byte: 64 } Data { byte: 64 } Data { byte: 126 } Data { byte: 126 } Data { byte: 64 } Data { byte: 64 } Data { byte: 126 } Data { byte: 126 } GotoBeginningOfLine ColorIntroducer { color_number: 2, color_coordinate_system: None } Data { byte: 63 } Data { byte: 63 } Data { byte: 125 } Data { byte: 125 } Data { byte: 71 } Data { byte: 71 } Data { byte: 125 } Data { byte: 125 } Data { byte: 63 } Data { byte: 63 } Data { byte: 125 } Data { byte: 125 } Data { byte: 63 } Data { byte: 63 } GotoNextLine ColorIntroducer { color_number: 1, color_coordinate_system: None } Repeat { repeat_count: 14, byte_to_repeat: 64 } End sixel-tokenizer-0.1.0/src/snapshots/sixel_tokenizer__tests__basic_sample.snap000064400000000000000000000024030072674642500261410ustar 00000000000000--- source: src/./tests.rs assertion_line: 31 expression: snapshot --- Dcs { macro_parameter: None, transparent_background: None, horizontal_pixel_distance: None } RasterAttribute { pan: 2, pad: 1, ph: Some(100), pv: Some(200) } ColorIntroducer { color_number: 0, color_coordinate_system: Some(RGB(0, 0, 0)) } ColorIntroducer { color_number: 1, color_coordinate_system: Some(RGB(100, 100, 0)) } ColorIntroducer { color_number: 2, color_coordinate_system: Some(RGB(0, 100, 0)) } ColorIntroducer { color_number: 1, color_coordinate_system: None } Data { byte: 126 } Data { byte: 126 } Data { byte: 64 } Data { byte: 64 } Data { byte: 118 } Data { byte: 118 } Data { byte: 64 } Data { byte: 64 } Data { byte: 126 } Data { byte: 126 } Data { byte: 64 } Data { byte: 64 } Data { byte: 126 } Data { byte: 126 } GotoBeginningOfLine ColorIntroducer { color_number: 2, color_coordinate_system: None } Data { byte: 63 } Data { byte: 63 } Data { byte: 125 } Data { byte: 125 } Data { byte: 71 } Data { byte: 71 } Data { byte: 125 } Data { byte: 125 } Data { byte: 63 } Data { byte: 63 } Data { byte: 125 } Data { byte: 125 } Data { byte: 63 } Data { byte: 63 } GotoNextLine ColorIntroducer { color_number: 1, color_coordinate_system: None } Repeat { repeat_count: 14, byte_to_repeat: 64 } End sixel-tokenizer-0.1.0/src/tests.rs000064400000000000000000000726130072674642500153160ustar 00000000000000use insta::assert_snapshot; use std::str; use crate::{Parser, SixelEvent}; #[test] fn basic_sample() { let sample = " \u{1b}Pq \"2;1;100;200 #0;2;0;0;0#1;2;100;100;0#2;2;0;100;0 #1~~@@vv@@~~@@~~$ #2??}}GG}}??}}??- #1!14@ \u{1b}\\ "; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let mut snapshot = String::new(); for event in events { snapshot.push_str(&format!("{:?}", event)); snapshot.push('\n'); } assert_snapshot!(snapshot); } #[test] fn dcs_event() { let sample = "\u{1b}Pq"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![SixelEvent::new_dcs(None, None, None)]; assert_eq!(events, expected); } #[test] fn dcs_event_with_all_optional_fields() { let sample = "\u{1b}P2;1;005;q"; // the 00 padding is added just to make sure we can handle it let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![SixelEvent::new_dcs(Some(2), Some(1), Some(5))]; assert_eq!(events, expected); } #[test] fn dcs_event_with_partial_optional_fields() { let sample = "\u{1b}P2q"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![SixelEvent::new_dcs(Some(2), None, None)]; assert_eq!(events, expected); } #[test] fn corrupted_dcs_event() { let sample = "\u{1b}P1122q\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::UnknownSequence([Some(27), Some(b'P'), Some(b'1'), Some(b'1'), Some(b'2')]), SixelEvent::UnknownSequence([Some(b'2'), Some(b'q'), None, None, None]), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn corrupted_partial_dcs_event() { let sample = "\u{1b}P%q\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::UnknownSequence([Some(27), Some(b'P'), None, None, None]), SixelEvent::UnknownSequence([Some(b'%'), None, None, None, None]), SixelEvent::Data { byte: b'q' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn color_introducer_event() { let sample = "#2\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_color_introducer(2, None, None, None, None).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn color_introducer_event_with_all_optional_fields() { let sample = "#0;1;100;150;200\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_color_introducer(0, Some(1), Some(100), Some(150), Some(200)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn color_introducer_event_with_partial_optional_fields() { let sample = "#0;1;100\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::UnknownSequence([Some(b'#'), Some(b'0'), Some(b';'), Some(b'1'), Some(b';')]), SixelEvent::UnknownSequence([Some(b'1'), Some(b'0'), Some(b'0'), None, None]), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn corrupted_color_introducer_event() { let sample = "#0;1!;100\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::UnknownSequence([Some(b'#'), Some(b'0'), Some(b';'), Some(b'1'), None]), SixelEvent::UnknownSequence([Some(b'!'), Some(b';'), Some(b'1'), Some(b'0'), Some(b'0')]), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn two_consecutive_color_introducer_events() { let sample = "#0;2;0;0;0#1;2;100;100;0#2;2;0;100;0"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_color_introducer(0, Some(2), Some(0), Some(0), Some(0)).unwrap(), SixelEvent::new_color_introducer(1, Some(2), Some(100), Some(100), Some(0)).unwrap(), ]; assert_eq!(events, expected); } #[test] fn color_introducer_event_after_dcs() { let sample = "\u{1b}Pq#0;2;0;0;0\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_dcs(None, None, None), SixelEvent::new_color_introducer(0, Some(2), Some(0), Some(0), Some(0)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn color_introducer_event_after_raster_event() { let sample = "\u{1b}Pq\"2;1;100;200#0;2;0;0;0\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_dcs(None, None, None), SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::new_color_introducer(0, Some(2), Some(0), Some(0), Some(0)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn color_introducer_event_after_sixel_data_event() { let sample = "~#0;2;0;0;0\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::Data { byte: b'~' }, SixelEvent::new_color_introducer(0, Some(2), Some(0), Some(0), Some(0)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn color_introducer_event_after_repeat_event() { let sample = "!14~#0;2;0;0;0\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_repeat(14, b'~').unwrap(), SixelEvent::new_color_introducer(0, Some(2), Some(0), Some(0), Some(0)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn color_introducer_event_after_eol_event() { let sample = "-#0;2;0;0;0\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoNextLine, SixelEvent::new_color_introducer(0, Some(2), Some(0), Some(0), Some(0)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn color_introducer_event_after_beginning_of_line_event() { let sample = "$#0;2;0;0;0\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoBeginningOfLine, SixelEvent::new_color_introducer(0, Some(2), Some(0), Some(0), Some(0)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event() { let sample = "\"2;1\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_raster(2, 1, None, None).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event_with_all_optional_fields() { let sample = "\"2;1;100;200\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event_with_partial_optional_fields() { let sample = "\"2;1;100\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_raster(2, 1, Some(100), None).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn corrupted_raster_event() { let sample = "\"2ff\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::UnknownSequence([Some(b'\"'), Some(b'2'), None, None, None]), SixelEvent::Data { byte: b'f' }, SixelEvent::Data { byte: b'f' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn two_consecutive_raster_events() { let sample = "\"2;1\"1;2;100;100\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_raster(2, 1, None, None).unwrap(), SixelEvent::new_raster(1, 2, Some(100), Some(100)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event_after_dcs() { let sample = " \u{1b}Pq \"2;1;100;200 \u{1b}\\ "; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_dcs(None, None, None), SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event_after_color_introducer_event() { let sample = " #1 \"2;1;100;200 \u{1b}\\ "; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_color_introducer(1, None, None, None, None).unwrap(), SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event_after_sixel_data_event() { let sample = " ~ \"2;1;100;200 \u{1b}\\ "; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::Data { byte: b'~' }, SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event_after_repeat_event() { let sample = " !15@ \"2;1;100;200 \u{1b}\\ "; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_repeat(15, b'@').unwrap(), SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event_after_eol_event() { let sample = " - \"2;1;100;200 \u{1b}\\ "; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoNextLine, SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn raster_event_after_beginning_of_line_event() { let sample = " $ \"2;1;100;200 \u{1b}\\ "; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoBeginningOfLine, SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn data_event() { let sample = "@\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![SixelEvent::Data { byte: b'@' }, SixelEvent::End]; assert_eq!(events, expected); } #[test] fn two_consecutive_data_events() { let sample = "@f\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::Data { byte: b'@' }, SixelEvent::Data { byte: b'f' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn data_event_after_dcs() { let sample = "\u{1b}Pq?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_dcs(None, None, None), SixelEvent::Data { byte: b'?' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn data_event_after_color_introducer_event() { let sample = "#2?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_color_introducer(2, None, None, None, None).unwrap(), SixelEvent::Data { byte: b'?' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn data_event_after_raster_event() { let sample = "\"2;1;100;200?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_raster(2, 1, Some(100), Some(200)).unwrap(), SixelEvent::Data { byte: b'?' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn data_event_after_repeat_event() { let sample = "!15??\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_repeat(15, b'?').unwrap(), SixelEvent::Data { byte: b'?' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn data_event_after_eol_event() { let sample = "-?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoNextLine, SixelEvent::Data { byte: b'?' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn data_event_after_beginning_of_line_event() { let sample = "$?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoBeginningOfLine, SixelEvent::Data { byte: b'?' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn repeat_event() { let sample = "!5?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![SixelEvent::new_repeat(5, b'?').unwrap(), SixelEvent::End]; assert_eq!(events, expected); } #[test] fn long_repeat_event() { let sample = "!298@\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![SixelEvent::new_repeat(298, b'@').unwrap(), SixelEvent::End]; assert_eq!(events, expected); } #[test] fn corrupted_repeat_event() { let sample = "!f?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::UnknownSequence([Some(b'!'), Some(b'f'), None, None, None]), SixelEvent::Data { byte: b'?' }, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn two_consecutive_repeat_events() { let sample = "!5?!14f\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_repeat(5, b'?').unwrap(), SixelEvent::new_repeat(14, b'f').unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn repeat_event_after_dcs() { let sample = "\u{1b}Pq!5?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_dcs(None, None, None), SixelEvent::new_repeat(5, b'?').unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn repeat_event_after_raster_event() { let sample = "\"1;1;1;1!5?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_raster(1, 1, Some(1), Some(1)).unwrap(), SixelEvent::new_repeat(5, b'?').unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn repeat_event_after_sixel_data_event() { let sample = "@!5?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::Data { byte: b'@' }, SixelEvent::new_repeat(5, b'?').unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn repeat_event_after_color_introducer_event() { let sample = "#0;1;2;100;2!5?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_color_introducer(0, Some(1), Some(2), Some(100), Some(2)).unwrap(), SixelEvent::new_repeat(5, b'?').unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn repeat_event_after_eol_event() { let sample = "-!5?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoNextLine, SixelEvent::new_repeat(5, b'?').unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn repeat_event_after_beginning_of_line_event() { let sample = "$!5?\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoBeginningOfLine, SixelEvent::new_repeat(5, b'?').unwrap(), SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn next_line_event() { let sample = "-\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![SixelEvent::GotoNextLine, SixelEvent::End]; assert_eq!(events, expected); } #[test] fn two_consecutive_next_line_events() { let sample = "--\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoNextLine, SixelEvent::GotoNextLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn next_line_event_after_dcs() { let sample = "\u{1b}Pq-\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_dcs(None, None, None), SixelEvent::GotoNextLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn next_line_event_after_raster_event() { let sample = "\"1;1;1;1-\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_raster(1, 1, Some(1), Some(1)).unwrap(), SixelEvent::GotoNextLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn next_line_event_after_sixel_data_event() { let sample = "?-\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::Data { byte: b'?' }, SixelEvent::GotoNextLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn next_line_event_after_color_introducer_event() { let sample = "#2-\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_color_introducer(2, None, None, None, None).unwrap(), SixelEvent::GotoNextLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn next_line_event_after_beginning_of_line_event() { let sample = "$-\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoBeginningOfLine, SixelEvent::GotoNextLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn beginning_of_line_event() { let sample = "$\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![SixelEvent::GotoBeginningOfLine, SixelEvent::End]; assert_eq!(events, expected); } #[test] fn two_consecutive_beginning_of_line_events() { let sample = "$$\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoBeginningOfLine, SixelEvent::GotoBeginningOfLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn beginning_of_line_event_after_dcs() { let sample = "\u{1b}Pq$\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_dcs(None, None, None), SixelEvent::GotoBeginningOfLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn beginning_of_line_event_after_raster_event() { let sample = "\"1;1;1;1$\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_raster(1, 1, Some(1), Some(1)).unwrap(), SixelEvent::GotoBeginningOfLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn beginning_of_line_event_after_sixel_data_event() { let sample = "?$\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::Data { byte: b'?' }, SixelEvent::GotoBeginningOfLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn beginning_of_line_event_after_color_introducer_event() { let sample = "#1$\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::new_color_introducer(1, None, None, None, None).unwrap(), SixelEvent::GotoBeginningOfLine, SixelEvent::End, ]; assert_eq!(events, expected); } #[test] fn beginning_of_line_event_after_next_line_event() { let sample = "-$\u{1b}\\"; let sample_bytes = sample.as_bytes(); let mut events = vec![]; let mut parser = Parser::new(); for byte in sample_bytes { parser.advance(&byte, |sixel_event| events.push(sixel_event)); } let expected = vec![ SixelEvent::GotoNextLine, SixelEvent::GotoBeginningOfLine, SixelEvent::End, ]; assert_eq!(events, expected); }