panic: EOF

[xyproto]

Hi,

I'm using the latest commit of waveform: 6b28917
and Go 1.11 on 64-bit Arch Linux.

After building waveform and copying test.wav to the cmd/waveform directory:

$ ls -al
.rw-r----- 1,0k afr 14 sep.  11:36 README.md
.rw-r-----  47M afr 14 sep.  11:40 test.wav
.rwxr-x--- 3,0M afr 14 sep.  11:36 waveform*
.rw-r----- 4,8k afr 14 sep.  11:36 waveform.go
.rw-r-----    0 afr 14 sep.  11:40 waveform.png
$ file test.wav
test.wav: RIFF (little-endian) data, WAVE audio

When attempting to create a .png image, I get an error message:

$ cat test.wav | ./waveform -x 5 -y 2 > waveform.png
panic: EOF

goroutine 1 [running]:
main.main()
        /home/afr/clones/waveform/cmd/waveform/waveform.go:127 +0xc9b

I tried with several different .wav files.

Line 127 in waveform.go is here.

[mdlayher]

It's been years since I worked on this program, but I don't think EOF should be treated as a fatal error. PRs are welcome.