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check if argument of initial-value is a number

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fossedihelm 2017-12-06 14:47:46 +01:00
parent 8313da522b
commit 1dc99e3a15
2 changed files with 10 additions and 6 deletions
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7
README.md
View file

@ -15,7 +15,7 @@ README.
## Building
Rust 1.17.0 or later is required to build librespot.
**If you are building librespot on macOS, the homebrew provided rust may fail due to the way in which homebrew installs rust. In this case, uninstall the homebrew version of rust and use [rustup](https://www.rustup.rs/), and librespot should then build.**
**If you are building librespot on macOS, the homebrew provided rust may fail due to the way in which homebrew installs rust. In this case, uninstall the homebrew version of rust and use [rustup](https://www.rustup.rs/), and librespot should then build.**
It also requires a C, with portaudio.
@ -43,7 +43,7 @@ cargo build --release
A sample program implementing a headless Spotify Connect receiver is provided.
Once you've built *librespot*, run it using :
```shell
target/release/librespot --username USERNAME --cache CACHEDIR --name DEVICENAME
target/release/librespot --username USERNAME --cache CACHEDIR --name DEVICENAME [--initial-volume 20]
```
## Discovery mode
@ -63,7 +63,7 @@ target/release/librespot [...] --backend portaudio
The following backends are currently available :
- ALSA
- PortAudio
- PortAudio
- PulseAudio
## Cross-compiling
@ -108,4 +108,3 @@ https://gitter.im/sashahilton00/spotify-connect-resources
## License
Everything in this repository is licensed under the MIT license.

9
src/main.rs
View file

@ -101,7 +101,7 @@ fn setup(args: &[String]) -> Setup {
.optopt("", "backend", "Audio backend to use. Use '?' to list options", "BACKEND")
.optopt("", "device", "Audio device to use. Use '?' to list options", "DEVICE")
.optopt("", "mixer", "Mixer to use", "MIXER")
.optopt("", "initial-volume", "Initial volume in %, once connected", "VOLUME");
.optopt("", "initial-volume", "Initial volume in %, once connected (must be from 0 to 100)", "VOLUME");
let matches = match opts.parse(&args[1..]) {
Ok(m) => m,
@ -136,7 +136,12 @@ fn setup(args: &[String]) -> Setup {
.expect("Invalid mixer");
let initial_volume;
if matches.opt_present("initial-volume"){
initial_volume = matches.opt_str("initial-volume").unwrap().parse::<i32>().unwrap()* 0xFFFF as i32 / 100 ;
if matches.opt_str("initial-volume").unwrap().parse::<i32>().is_ok(){
initial_volume = matches.opt_str("initial-volume").unwrap().parse::<i32>().unwrap()* 0xFFFF as i32 / 100 ;
}
else {
initial_volume = 0x8000 as i32;
}
}
else{
initial_volume = 0x8000 as i32;