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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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3
README.md
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@ -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
@ -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;