How to deal with csv parsing errors

[razetime]

I have a very simple program:

:- use_module(library(csv)).
:- use_module(library(dcgs)).
:- use_module(library(pio)).

:- phrase_from_file(parse_csv(Data),"data.csv"), write(Data).

The data is here, and it comes from a Google Sheets export.

I just get an error with the following:

$ pl generate.P 
   error(syntax_error(inconsistent_entry),load/1).
?- 

which doesn't make much sense to me. I tried in the repl:

?- use_module(library(csv)).
   true.
?- use_module(library(pio)).
   true.
?- phrase_from_file(parse_csv(Data),"data.csv")
   error(syntax_error(unexpected_char),read_term/3:0).

I'm not sure why it isn't parsing, as github seems to recognize it fine, and the parser seems to recognize crlf. I'd like some help with finding out why.

[haijinSk]

This line:

:- phrase_from_file(parse_csv(Data),"data.csv"), write(Data).

should be (if in a file), for example, like this:

run :- phrase_from_file(parse_csv(Data),"data.csv"), write(Data).

The "head" was missing.

The repl case works in my case...

[razetime]

so, run will be automatically be run as the first predicate?

[haijinSk]

No, the name is arbitrary, you need use REPL to write run., in this case, or:

$ scryer-prolog -g run,halt csv-parsing.pl

from the command line...

[razetime]

ah, -g option works for a sort of "script" functionality. Thanks for the quick response.

[haijinSk]

You're welcome.

$ scryer-prolog -h
[...]
-g, --goal GOAL        Run the query GOAL
[...]

There is at least one more thing to it. I'm only a beginner, but recently #2154, #2170 I saw a line like this added to a file:

:- initialization(run).

Again, the goal's name "run" is arbitrary.

[triska]

Also, the most recent method to morph a Prolog program into a valid shell script was posted by @infogulch in #2170 (comment)!

[triska]

In addition to what @haijinSk wrote, I tried the REPL interaction with the latest git version on OSX, and it worked:

$ scryer-prolog -f
?- use_module(library(pio)).
   true.
?- use_module(library(csv)).
   true.
?- phrase_from_file(parse_csv(Data),"data.csv").
   Data = frame(["Timestamp","Name","Discord Username ..."|...]).

Version:

$ scryer-prolog -v
v0.9.3-55-g631674db

[razetime]

yeah, seems that the latest commit fixes my problem in the repl. thanks.

[razetime]

how do you make your prompts in the code block bold?

[triska]

I use <b> HTML tags within <pre>, as in <pre><b>...</b>....</pre>.