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// Copyright (C) 2019 Philipp Wolfer <ph.wolfer@gmail.com> // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. //! `discid` allows you to calculate MusicBrainz or FreeDB disc IDs for audio CDs. //! //! `discid` provides bindings to the MusicBrainz [libdiscid](https://musicbrainz.org/doc/libdiscid) //! library. In addition to calculating the disc IDs you can also get advanced data from the //! audio CD such as MCN (media catalogue number) and per-track ISRCs. //! //! To get started see the documentation and examples of [`DiscId::read`], [`DiscId::read_features`], //! [`DiscId::put`] and [`DiscId::parse`]. //! //! Details about the use and calculation of disc IDs can be found at the [MusicBrainz //! disc ID documentation](https://musicbrainz.org/doc/Disc_ID). //! //! The source code of this library is available on [GitHub](https://github.com/phw/rust-discid) //! under the terms of the GNU Lesser General Public License version 3 or later. //! //! [`DiscId::read`]: ./struct.DiscId.html#method.read //! [`DiscId::read_features`]: ./struct.DiscId.html#method.read_features //! [`DiscId::put`]: ./struct.DiscId.html#method.put //! [`DiscId::parse`]: ./struct.DiscId.html#method.parse #![deny( missing_docs, missing_debug_implementations, missing_copy_implementations, trivial_casts, trivial_numeric_casts, unstable_features, unused_import_braces, unused_qualifications )] use discid_sys::*; use std::error::Error; use std::ffi::{CStr, CString}; use std::fmt; use std::num::ParseIntError; use std::os::raw::c_char; use std::os::raw::c_int; use std::ptr; use std::rc::Rc; #[macro_use] extern crate bitflags; bitflags! { /// Constants representing the features supported by libdiscid. /// /// See [`DiscId::read_features`] for details. /// /// [`DiscId::read_features`]: ./struct.DiscId.html#method.read_features pub struct Features: u32 { /// Read the CD TOC. /// /// This is supported on all platforms and indicates that only the /// table of contents (TOC), from which the disc ID gets calculated, /// will be read. const READ = discid_feature::DISCID_FEATURE_READ; /// Read the MCN (aka barcode) information. /// /// Read the MCN field from the CD. Not all CDs provide this information. /// Without this feature [`DiscId::mcn`] will always return an empty string. /// /// [`DiscId::mcn`]: ./struct.DiscId.html#method.mcn const MCN = discid_feature::DISCID_FEATURE_MCN; /// Supports reading the ISRCs per track. /// /// For each track read the ISRC encoded in the subchannel data. Not all CDs provide this /// information. Without this feature [`Track::isrc`] will always be an empty string. /// /// [`Track::isrc`]: ./struct.Track.html#structfield.isrc const ISRC = discid_feature::DISCID_FEATURE_ISRC; } } /// This is returned on errors reading the disc or setting the TOC. #[derive(Debug)] pub struct DiscError { reason: String, } impl DiscError { fn new(message: &str) -> Self { DiscError { reason: message.to_string(), } } } impl Error for DiscError {} impl fmt::Display for DiscError { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "DiscError: {}", self.reason) } } impl From<ParseIntError> for DiscError { fn from(err: ParseIntError) -> Self { DiscError { reason: format!("{}", err), } } } #[derive(Debug)] struct DiscIdHandle { real_handle: ptr::NonNull<discid_sys::DiscId>, } impl DiscIdHandle { fn new(handle: *mut discid_sys::DiscId) -> DiscIdHandle { unsafe { DiscIdHandle { real_handle: ptr::NonNull::new_unchecked(handle), } } } fn as_ptr(&self) -> *mut discid_sys::DiscId { self.real_handle.as_ptr() } } impl Drop for DiscIdHandle { fn drop(&mut self) { unsafe { discid_free(self.as_ptr()) } } } /// `DiscId` holds information about a disc (TOC, MCN, ISRCs). /// /// Use [`DiscId::read`], [`DiscId::read_features`], [`DiscId::put`] or [`DiscId::parse`] /// to initialize an instance of `DiscId`. /// /// [`DiscId::read`]: #method.read /// [`DiscId::read_features`]: #method.read_features /// [`DiscId::put`]: #method.put /// [`DiscId::parse`]: #method.parse pub struct DiscId { handle: Rc<DiscIdHandle>, } impl DiscId { fn new() -> Result<DiscId, DiscError> { let handle = unsafe { discid_new() }; if handle.is_null() { Err(DiscError::new( "discid_new() failed, could not allocate memory", )) } else { Ok(DiscId { handle: Rc::new(DiscIdHandle::new(handle)), }) } } /// Read the disc in the given CD-ROM/DVD-ROM drive extracting only the TOC. /// /// This function reads the disc in the drive specified by the given device /// identifier. If the device is `None`, the default device, as returned by /// [`DiscId::default_device`], is used. /// /// This function will only read the TOC, hence only the disc ID itself will be /// available. Use [`DiscId::read_features`] if you want to read also MCN and ISRCs. /// /// # Examples /// /// Read from default device /// ```no_run /// use discid::DiscId; /// /// let disc = DiscId::read(None).expect("Reading disc failed"); /// println!("ID: {}", disc.id()); /// ``` /// /// Read from specific device /// ```no_run /// # use discid::DiscId; /// let disc = DiscId::read(Some("/dev/sr1")).expect("Reading disc failed"); /// println!("ID: {}", disc.id()); /// ``` /// /// [`DiscId::read_features`]: #method.read_features /// [`DiscId::default_device`]: #method.default_device pub fn read(device: Option<&str>) -> Result<DiscId, DiscError> { DiscId::read_features(device, Features::READ) } /// Read the disc in the given CD-ROM/DVD-ROM drive with additional features. /// /// This function is similar to [`DiscId::read`] but allows to read information about MCN /// and per-track ISRCs in addition to the normal TOC data. /// /// The parameter `features` accepts a bitwise combination of values defined in [`Features`]. /// [`Features::READ`] is always implied, so it is not necessary to specify it. /// /// Reading MCN and ISRCs is not available on all platforms. You can use the /// [`has_feature`] method to check if a specific feature is available. Passing unsupported /// features here will just be ignored. /// /// Note that reading MCN and ISRC data is significantly slower than just reading the TOC, so /// only request the features you actually need. /// /// # Examples /// /// Read both ISRC and MCN from default device /// ```no_run /// use discid::{DiscId, Features}; /// /// let features = Features::MCN | Features::ISRC; /// let disc = DiscId::read_features(None, features).expect("Reading disc failed"); /// println!("ID : {}", disc.id()); /// println!("MCN: {}", disc.mcn()); /// for track in disc.tracks() { /// println!("#{} ISRC: {}", track.number, track.isrc); /// } /// ``` /// /// [`DiscId::read`]: #method.read /// [`has_feature`]: #method.has_feature /// [`Features`]: ./struct.Features.html /// [`Features::READ`]: ./struct.Features.html#associatedconstant.READ pub fn read_features(device: Option<&str>, features: Features) -> Result<DiscId, DiscError> { let disc = DiscId::new()?; let c_device: *const c_char = match device { Some(d) => CString::new(d).expect("CString::new failed").into_raw(), None => ptr::null(), }; let status = unsafe { discid_read_sparse(disc.handle.as_ptr(), c_device, features.bits()) }; if status == 0 { Err(disc.error()) } else { Ok(disc) } } /// Provides the TOC of a known CD. /// /// This function may be used if the TOC has been read earlier and you want to calculate /// the disc ID afterwards, without accessing the disc drive. /// /// `first` is the track number of the first track (1-99). /// The `offsets` parameter points to an array which contains the track offsets for each track. /// The first element, `offsets[0]`, is the leadout track. It must contain the total number of /// sectors on the disc. `offsets` must not be longer than 100 elements (leadout + 99 tracks). /// /// # Examples: /// /// ``` /// use discid::DiscId; /// /// let first_track = 1; /// // The offsets contain the total number of sectors as first element, followed by /// // the start sectors of each track. /// let offsets = [ /// 242457, 150, 44942, 61305, 72755, 96360, 130485, 147315, 164275, 190702, 205412, 220437, /// ]; /// let disc = DiscId::put(first_track, &offsets).expect("DiscId::put() failed"); /// assert_eq!("lSOVc5h6IXSuzcamJS1Gp4_tRuA-", disc.id()); /// ``` pub fn put(first: i32, offsets: &[i32]) -> Result<DiscId, DiscError> { let disc = DiscId::new()?; let last = first + (offsets.len() as c_int) - 2; let offset_ptr: *mut c_int; let mut full_offsets: [c_int; 100]; if first > 1 && last <= 99 { // libdiscid always expects an array of 100 integers, no matter the track count. // If the first track is larger 1 empty tracks must be filled with 0. full_offsets = [0; 100]; full_offsets[0] = offsets[0]; // Total sectors on disc full_offsets[first as usize..(last + 1) as usize].copy_from_slice(&offsets[1..]); offset_ptr = full_offsets.as_ptr() as *mut c_int; } else { // In case the track count starts at 1 we do not have to copy the array. // libdiscid will not read beyond the boundary of `last + 1`, which in our case // equals `offsets.length`. offset_ptr = offsets.as_ptr() as *mut c_int; } let status = unsafe { discid_put(disc.handle.as_ptr(), first, last, offset_ptr) }; if status == 0 { Err(disc.error()) } else { Ok(disc) } } /// Parses a TOC string and returns a [`DiscId`] instance for it. /// /// The TOC string provided here must have the same format as returned by [`toc_string`]. /// /// This function can be used if you already have a TOC string like e.g. /// `1 11 242457 150 44942 61305 72755 96360 130485 147315 164275 190702 205412 220437`. /// /// # Examples: /// /// ``` /// use discid::DiscId; /// /// let toc = "1 11 242457 150 44942 61305 72755 96360 130485 147315 164275 190702 205412 220437"; /// let disc = DiscId::parse(toc).expect("DiscId::put() failed"); /// assert_eq!("lSOVc5h6IXSuzcamJS1Gp4_tRuA-", disc.id()); /// assert_eq!(toc, disc.toc_string()); /// ``` /// /// [`DiscId`]: ./struct.DiscId.html /// [`toc_string`]: #method.toc_string pub fn parse(toc: &str) -> Result<DiscId, DiscError> { let mut i: usize = 0; let mut first_track: c_int = 1; let mut last_track: c_int = 1; let mut offsets: [c_int; 100] = [0; 100]; for part in toc.split(' ') { let parsed_int = part.parse::<c_int>()?; if i == 0 { first_track = parsed_int; } else if i == 1 { last_track = parsed_int; } else if i > 1 { if i > (last_track as usize + 2) || i > 99 + 2 { return Err(DiscError::new( "TOC string contains too many offsets (max. 100)", )); } offsets[i - 2] = parsed_int; } i += 1; } if i < 3 { return Err(DiscError::new(&format!("Invalid TOC string {:?}", toc))); } let offset_count = (i - 3) as c_int; let track_count = last_track - first_track + 1; if track_count != offset_count { return Err(DiscError::new(&format!( "Number of offsets {} does not match track count {}", offset_count, last_track ))); } DiscId::put(first_track, &offsets[0..(i - 2)]) } /// Check if a certain feature is implemented on the current platform. /// /// This only works for single features, not bit masks with multiple features. /// /// See the [libdiscid feature matrix](https://musicbrainz.org/doc/libdiscid#Feature_Matrix) /// for a list of supported features per platform. /// /// # Examples /// ``` /// use discid::{DiscId, Features}; /// /// let can_read = DiscId::has_feature(Features::READ); /// assert!(can_read); /// ``` pub fn has_feature(feature: Features) -> bool { let result = unsafe { discid_has_feature(feature.bits()) }; result == 1 } /// Return version information about libdiscid. /// /// The returned string will be e.g. `"libdiscid 0.6.2"`. /// /// # Examples /// ``` /// use discid::DiscId; /// /// println!("{}", DiscId::version_string()); /// ``` pub fn version_string() -> String { let str_ptr = unsafe { discid_get_version_string() }; to_str(str_ptr) } /// Return the name of the default disc drive for this operating system. /// /// The default device is system dependent, e.g. `/dev/cdrom` on Linux and `D:` on Windows. /// /// # Examples /// ``` /// use discid::DiscId; /// /// println!("{}", DiscId::default_device()); /// ``` pub fn default_device() -> String { let version_ptr = unsafe { discid_get_default_device() }; to_str(version_ptr) } fn error(&self) -> DiscError { let str_ptr = unsafe { discid_get_error_msg(self.handle.as_ptr()) }; DiscError::new(&to_str(str_ptr)) } /// The MusicBrainz disc ID. pub fn id(&self) -> String { let str_ptr = unsafe { discid_get_id(self.handle.as_ptr()) }; to_str(str_ptr) } /// The FreeDB disc ID. pub fn freedb_id(&self) -> String { let str_ptr = unsafe { discid_get_freedb_id(self.handle.as_ptr()) }; to_str(str_ptr) } /// Return a string representing CD Table Of Contents (TOC). /// /// The TOC string is a list of integers separated by a single space character. The integers /// represent (in order): /// /// - First track number (normally one) /// - Last track number /// - Lead-out track offset /// - Up to 99 frame offsets /// /// See also [`DiscId::parse`] and the documentation for [Disc ID Calculation](https://musicbrainz.org/doc/Disc_ID_Calculation). /// /// [`DiscId::parse`]: #method.parse pub fn toc_string(&self) -> String { let str_ptr = unsafe { discid_get_toc_string(self.handle.as_ptr()) }; to_str(str_ptr) } /// An URL for submitting the DiscID to MusicBrainz. pub fn submission_url(&self) -> String { let str_ptr = unsafe { discid_get_submission_url(self.handle.as_ptr()) }; to_str(str_ptr) } /// The number of the first track on this disc. pub fn first_track_num(&self) -> i32 { unsafe { discid_get_first_track_num(self.handle.as_ptr()) } } /// The number of the last track on this disc. pub fn last_track_num(&self) -> i32 { unsafe { discid_get_last_track_num(self.handle.as_ptr()) } } /// The length of the disc in sectors. pub fn sectors(&self) -> i32 { unsafe { discid_get_sectors(self.handle.as_ptr()) } } /// The media catalogue number on the disc, if present. pub fn mcn(&self) -> String { let str_ptr = unsafe { discid_get_mcn(self.handle.as_ptr()) }; to_str(str_ptr) } /// Returns an iterator to access information about each track on the disc. /// /// Returns an instance of [`Track`] for each track. /// /// # Examples /// /// ``` /// use discid::DiscId; /// /// let offsets = [ /// 242457, 150, 44942, 61305, 72755, 96360, 130485, 147315, 164275, 190702, 205412, 220437, /// ]; /// let disc = DiscId::put(1, &offsets).expect("DiscId::put() failed"); /// for track in disc.tracks() { /// println!("Track #{}", track.number); /// println!(" ISRC : {}", track.isrc); /// println!(" Offset : {}", track.offset); /// println!(" Sectors : {}", track.sectors); /// } /// ``` /// /// [`Track`]: ./struct.Track.html pub fn tracks(&self) -> TrackIter { TrackIter::new(Rc::clone(&self.handle)) } /// Returns a [`Track`] instance for the nth track. /// /// # Panics /// Panics if `number` is outside the range given by [`first_track_num`] /// and [`last_track_num`]. /// /// # Examples /// /// ``` /// use discid::DiscId; /// /// let offsets = [ /// 242457, 150, 44942, 61305, 72755, 96360, 130485, 147315, 164275, 190702, 205412, 220437, /// ]; /// let disc = DiscId::put(1, &offsets).expect("DiscId::put() failed"); /// let track = disc.nth_track(7); /// assert_eq!(7, track.number); /// assert_eq!(147315, track.offset); /// assert_eq!(16960, track.sectors); /// ``` /// /// [`Track`]: ./struct.Track.html /// [`first_track_num`]: #method.first_track_num /// [`last_track_num`]: #method.last_track_num pub fn nth_track(&self, number: i32) -> Track { let first = self.first_track_num(); let last = self.last_track_num(); if number < first || number > last { panic!( "track number out of bounds: given {}, expected between {} and {}", number, first, last ); } get_track(Rc::clone(&self.handle), number) } } impl fmt::Debug for DiscId { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "DiscId {}", self.toc_string()) } } /// Holds information about a single track #[derive(Debug)] pub struct Track { /// Track number (1-99) of the track. pub number: i32, /// Start offset in sectors. pub offset: i32, /// Track length in sectors. pub sectors: i32, /// ISRC for this track (might be empty). /// /// This will only bet set if [`DiscId::read_features`] is called with [`Features::ISRC`]. /// /// [`DiscId::read_features`]: ./struct.DiscId.html#method.read_features /// [`Features::ISRC`]: ./struct.Features.html#associatedconstant.ISRC pub isrc: String, } /// Allows iterating over all tracks of a read disc. /// /// Returns an instance of [`Track`] for each track. /// /// [`Track`]: ./struct.Track.html #[derive(Debug)] pub struct TrackIter { handle: Rc<DiscIdHandle>, curr: i32, last_track: i32, } impl TrackIter { fn new(handle: Rc<DiscIdHandle>) -> TrackIter { let handle_ptr = handle.as_ptr(); let first_track = unsafe { discid_get_first_track_num(handle_ptr) }; let last_track = unsafe { discid_get_last_track_num(handle_ptr) }; TrackIter { handle, curr: first_track, last_track, } } } impl Iterator for TrackIter { type Item = Track; fn next(&mut self) -> Option<Track> { let track_num = self.curr; self.curr += 1; if track_num <= self.last_track { Some(get_track(Rc::clone(&self.handle), track_num)) } else { None } } } fn get_track(handle: Rc<DiscIdHandle>, number: i32) -> Track { let handle_ptr = handle.as_ptr(); let isrc_ptr = unsafe { discid_get_track_isrc(handle_ptr, number) }; Track { number, offset: unsafe { discid_get_track_offset(handle_ptr, number) }, sectors: unsafe { discid_get_track_length(handle_ptr, number) }, isrc: to_str(isrc_ptr), } } fn to_str(c_buf: *const c_char) -> String { let c_str: &CStr = unsafe { CStr::from_ptr(c_buf) }; let str_slice = c_str.to_string_lossy(); str_slice.into_owned() } #[cfg(test)] mod tests { use super::{DiscError, DiscId, Features, Track}; #[test] #[ignore] fn discid_read_default_device() { // This test requires an actual CD inserted into the defailt CD drive. let disc = DiscId::read(None).expect("DiscId::read failed"); assert_eq!(28, disc.id().len()); } #[test] #[should_panic(expected = "cannot open")] fn discid_read_invalid_device() { DiscId::read(Some("notadevice")).expect("DiscId::read failed"); } #[test] #[ignore] #[cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))] fn discid_read_features_all() { // This test requires an actual CD inserted into the defailt CD drive. // The CD must provide MCN and ISRC information. let disc = DiscId::read_features(None, Features::all()).expect("DiscId::read_features failed"); assert_eq!(28, disc.id().len()); assert!(!disc.mcn().is_empty()); assert_eq!(12, disc.nth_track(1).isrc.len()); } #[test] #[should_panic(expected = "cannot open")] fn discid_read_features_invalid_device() { DiscId::read_features(Some("notadevice"), Features::READ) .expect("DiscId::read_features failed"); } #[test] fn discid_put() { let first = 1; let offsets = [ 206535, 150, 18901, 39738, 59557, 79152, 100126, 124833, 147278, 166336, 182560, ]; let disc = DiscId::put(first, &offsets).expect("DiscId::put failed"); let last_track = disc.last_track_num(); assert_eq!("Wn8eRBtfLDfM0qjYPdxrz.Zjs_U-", disc.id()); assert_eq!("830abf0a", disc.freedb_id()); assert_eq!(1, disc.first_track_num()); assert_eq!(10, last_track); assert_eq!(206535, disc.sectors()); assert_eq!( "1 10 206535 150 18901 39738 59557 79152 100126 124833 147278 166336 182560", disc.toc_string() ); assert_eq!( "http://musicbrainz.org/cdtoc/attach?id=Wn8eRBtfLDfM0qjYPdxrz.Zjs_U-&tracks=10&toc=1+10+206535+150+18901+39738+59557+79152+100126+124833+147278+166336+182560", disc.submission_url()); for track in disc.tracks() { let offset = offsets[track.number as usize]; let next = if track.number < last_track { track.number + 1 } else { 0 }; let length = offsets[next as usize] - offset; assert_eq!( offset, track.offset, "track {} expected offset {}", track.number, offset ); assert_eq!( length, track.sectors, "track {} expected sectors {}", track.number, length ); } } #[test] fn discid_put_first_track_not_one() { let first = 3; let offsets = [ 206535, 150, 18901, 39738, 59557, 79152, 100126, 124833, 147278, 166336, 182560, ]; let disc = DiscId::put(first, &offsets).expect("DiscId::put failed"); assert_eq!("ByBKvJM1hBL7XtvsPyYtIjlX0Bw-", disc.id()); assert_eq!(3, disc.first_track_num()); assert_eq!(12, disc.last_track_num()); assert_eq!(206535, disc.sectors()); } #[test] #[should_panic(expected = "Illegal track limits")] fn discid_put_too_many_offsets() { let first = 1; let offsets: [i32; 101] = [0; 101]; DiscId::put(first, &offsets).expect("DiscId::put failed"); } #[test] #[should_panic(expected = "Illegal track limits")] fn discid_put_too_many_tracks() { let first = 11; let offsets: [i32; 101] = [0; 101]; DiscId::put(first, &offsets).expect("DiscId::put failed"); } #[test] fn discid_parse() { let toc = "1 11 242457 150 44942 61305 72755 96360 130485 147315 164275 190702 205412 220437"; let disc = DiscId::parse(toc).expect("DiscId::parse failed"); assert_eq!("lSOVc5h6IXSuzcamJS1Gp4_tRuA-", disc.id()); assert_eq!(toc, disc.toc_string()); } #[test] fn discid_parse_minimal() { let toc = "1 1 44942 150"; let disc = DiscId::parse(toc).expect("DiscId::parse failed"); assert_eq!("ANJa4DGYN_ktpzOwvVPtcjwP7mE-", disc.id()); assert_eq!(toc, disc.toc_string()); } #[test] fn discid_parse_first_track_not_one() { let toc = "3 12 242457 150 18901 39738 59557 79152 100126 124833 147278 166336 182560"; let disc = DiscId::parse(toc).expect("DiscId::parse failed"); assert_eq!("fC1yNbC5bVjbvphqlAY9JyYoWEY-", disc.id()); assert_eq!(toc, disc.toc_string()); } #[test] #[should_panic(expected = "invalid digit found in string")] fn discid_parse_invalid_nan() { let toc = "1 2 242457 150 a"; DiscId::parse(toc).expect("DiscId::parse failed"); } #[test] #[should_panic(expected = "TOC string contains too many offsets")] fn discid_parseinvalid_too_many_offsets() { let toc = "1 2 242457 150 200 300"; DiscId::parse(&toc).expect("DiscId::parse failed"); } #[test] #[should_panic(expected = "TOC string contains too many offsets")] fn discid_parseinvalid_too_many_offsets_total() { let mut indexes = vec!["0"; 103]; indexes[0] = "1"; indexes[1] = "100"; let toc = indexes.join(" "); DiscId::parse(&toc).expect("DiscId::parse failed"); } #[test] #[should_panic(expected = "Number of offsets 1 does not match track count 2")] fn discid_parse_invalid_missing_offsets() { let toc = "1 2 242457 150"; DiscId::parse(toc).expect("DiscId::parse failed"); } #[test] #[should_panic(expected = "Invalid TOC string")] fn discid_parse_invalid_not_enough_elements() { let toc = "1"; DiscId::parse(toc).expect("DiscId::parse failed"); } #[test] #[should_panic(expected = "cannot parse integer from empty string")] fn discid_parse_invalid_empty() { let toc = ""; DiscId::parse(toc).expect("DiscId::parse failed"); } #[test] fn discid_nth_track() { let first = 1; let offsets = [ 206535, 150, 18901, 39738, 59557, 79152, 100126, 124833, 147278, 166336, 182560, ]; let disc = DiscId::put(first, &offsets).expect("DiscId::put failed"); let track = disc.nth_track(4); let expected_offset = offsets[4]; let expected_sectors = offsets[5] - offsets[4]; assert_eq!(4, track.number); assert_eq!("", track.isrc); // Always empty for DiscId::put assert_eq!( expected_offset, track.offset, "track {} expected offset {}", track.number, expected_offset ); assert_eq!( expected_sectors, track.sectors, "track {} expected sectors {}", track.number, expected_sectors ); } #[test] #[should_panic(expected = "track number out of bounds: given 11, expected between 1 and 10")] fn discid_nth_track_out_of_bounds() { let first = 1; let offsets = [ 206535, 150, 18901, 39738, 59557, 79152, 100126, 124833, 147278, 166336, 182560, ]; let disc = DiscId::put(first, &offsets).expect("DiscId::put failed"); disc.nth_track(11); } #[test] fn discid_default_device() { let device = DiscId::default_device(); assert!(!device.is_empty()); } #[test] fn discid_has_feature() { assert_eq!(true, DiscId::has_feature(Features::READ)); } #[test] #[cfg(any(target_os = "linux", target_os = "macos", target_os = "windows"))] fn discid_has_feature_all() { assert_eq!(true, DiscId::has_feature(Features::READ)); assert_eq!(true, DiscId::has_feature(Features::MCN)); assert_eq!(true, DiscId::has_feature(Features::ISRC)); } #[test] fn discid_version_string() { let version = DiscId::version_string(); assert!(version.starts_with("libdiscid")); } #[test] fn discid_debug() { let first = 1; let offsets = [2000, 150, 1000]; let disc = DiscId::put(first, &offsets).expect("DiscId::put failed"); assert_eq!("DiscId 1 2 2000 150 1000", format!("{:?}", disc)); } #[test] fn features() { assert_eq!(3, (Features::READ | Features::MCN).bits()); assert_eq!( Features::all(), Features::READ | Features::MCN | Features::ISRC ); } #[test] fn track_debug() { let track = Track { number: 3, offset: 57402, sectors: 32960, isrc: "DED831801578".to_string(), }; assert_eq!( "Track { number: 3, offset: 57402, sectors: 32960, isrc: \"DED831801578\" }", format!("{:?}", track) ); } #[test] fn disc_error_new() { let message = "The message"; let error = DiscError::new(message); assert_eq!(message, error.reason); } #[test] fn disc_error_fmt() { let error = DiscError::new("The message"); assert_eq!("DiscError: The message", format!("{}", error)); } #[test] fn disc_error_debug() { let error = DiscError::new("The message"); assert_eq!( "DiscError { reason: \"The message\" }", format!("{:?}", error) ); } }