Decimal separator of timestamps in CSV exports depends on locale but is not quoted if it is ,

[stefanct]

My Linux environment uses a rather peculiar set of locale variables to enable using English as the primary language without ridiculous other settings for dates etc. My default decimal separator is usually a comma (,). DSView apparently uses this for the export of timestamps as well and thus produces CSV files like this:

head util/wrong.csv 
; CSV, generated by libsigrok4DSL 0.2.0 on 2024-07-24 18:29:57
; Channels (6/16)
; Sample rate: 250 MHz
; Sample count: 500.736 K Samples
Time(s), SCK, MISO, 2, CS_F, MOSI, 5
0,0,0,0,1,0,0
4e-09,0,0,0,1,0,0
8e-09,0,0,0,1,0,0
1,2e-08,0,0,0,1,0,0

Note the last line where 1,2e-08 represents 12 ns. This leads to problems when further processing the file.

When executing LC_NUMERIC="en_US.UTF-8" ./DSView and thus forcing points (.) as decimal separator the export is correct:

; CSV, generated by libsigrok4DSL 0.2.0 on 2024-07-24 18:28:57
; Channels (6/16)
; Sample rate: 250 MHz
; Sample count: 500.736 K Samples
Time(s), SCK, MISO, 2, CS_F, MOSI, 5
0,0,0,0,1,0,0
4e-09,0,0,0,1,0,0
8e-09,0,0,0,1,0,0
1.2e-08,0,0,0,1,0,0
1.6e-08,0,0,0,1,0,0

Either DSView should just use . as separator or quote the respective entries with " if need be (or always). Pulseview works fine with my setup BTW.

[dreamsource-tai]

@stefanct We fixed this issue, please try.