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//! //!# Basic usage //! //! This can be used by adding `rtag` to your dependencies in your project's `Cargo.toml`. //! //! ```toml //! [dependencies] //! rtag = "0.3" //! ``` //! //! and this to your crate root: //! //! ```rust //! extern crate rtag; //! ``` //! //!# Example: reading and filtering //! //! When you read a frame information, you use `[Unit](metadata/enum.Unit.html)`. //! //!# Example: reading V1 frame. //! //! ```rust //! use rtag::metadata::Unit; //! use rtag::metadata::MetadataReader; //! //! for m in MetadataReader::new("./test-resources/v1-v2.mp3").unwrap() { //! match m { //! Unit::FrameV1(frame) => { //! assert_eq!("Artist", frame.artist); //! assert_eq!("!@#$", frame.comment); //! assert_eq!("1", frame.track); //! assert_eq!("137", frame.genre); //! }, //! _ => () //! } //! } //! ``` //! //!# Example: reading V2 frame. //! //!```rust //! use rtag::frame::*; //! use rtag::metadata::Unit; //! use rtag::metadata::MetadataReader; //! //! for m in MetadataReader::new("./test-resources/240-pcnt.mp3").unwrap() { //! match m { //! Unit::FrameV2(head, FrameBody::PCNT(frame)) => { //! assert_eq!(256, frame.counter); //! }, //! _ => () //! } //! } //! //!``` //! //!# Example: modifying a frame. //! //!```rust //! use std::fs; //! use rtag::frame::*; //! use rtag::metadata::Unit; //! use rtag::metadata::MetadataReader; //! use rtag::metadata::MetadataWriter; //! //! let path = "./test-resources/240.test.mp3"; //! fs::copy("./test-resources/240.mp3", path).unwrap(); //! //! let new_data = MetadataReader::new(path) //! .unwrap() //! .fold(Vec::new(), |mut vec, unit| { //! if let Unit::FrameV2(frame_head, frame_body) = unit { //! let new_frame_body = if let FrameBody::TALB(ref frame) = frame_body { //! let mut new_frame = frame.clone(); //! new_frame.text = "Album!".to_string(); //! FrameBody::TALB(new_frame) //! } else { //! frame_body.clone() //! }; //! //! vec.push(Unit::FrameV2(frame_head, new_frame_body)); //! } else { //! vec.push(unit); //! } //! //! vec //! }); //! //! let writer = MetadataWriter::new(path).unwrap(); //! let _ = writer.write(new_data, false); //! let _ = fs::remove_file(path).unwrap(); //!``` //! //!# Example: rewriting all the frame to version 4. //! //!```rust //! use std::fs; //! use rtag::frame::*; //! use rtag::metadata::Unit; //! use rtag::metadata::MetadataReader; //! use rtag::metadata::MetadataWriter; //! //! let path = "./test-resources/v2.2.test.mp3"; //! fs::copy("./test-resources/v2.2.mp3", path).unwrap(); //! //! let frames2_2 = MetadataReader::new(path).unwrap().collect::<Vec<Unit>>(); //! let _ = MetadataWriter::new(path).unwrap().write(frames2_2, true); //! let i = MetadataReader::new(path) //! .unwrap() //! .filter(|unit| match unit { //! &Unit::FrameV2(FrameHeader::V22(_), _) => true, //! _ => false, //! }); //! //! assert_eq!(i.count(), 0); //! //! let i = MetadataReader::new(path) //! .unwrap() //! .filter(|unit| match unit { //! &Unit::FrameV2(FrameHeader::V24(_), _) => true, //! _ => false, //! }); //! //! assert_eq!(i.count(), 5); //! let _ = fs::remove_file(path).unwrap(); //!``` //! //! # Example: Looking into frame without property name of frame. //! //!```rust //!use rtag::frame::*; //!use rtag::metadata::{Unit, MetadataReader}; //! //!for m in MetadataReader::new("./test-resources/240.mp3").unwrap() { //! match m { //! Unit::FrameV2(_, ref frame) => { //! //! let _ = frame.to_map(); // frame to map //! //! frame.inside(|key, value| { //! println!("{}: {}", key, value); //! //! true // continue or not //! }); //! }, //! _ => {} //! } //!} //! //!``` #[macro_use] extern crate log; #[macro_use] extern crate serde_derive; extern crate serde_json; pub mod rw; pub mod frame; pub mod metadata;