npm install fails on Ubuntu about xsd2json HOT 4 CLOSED

This is due to broken SWI-Prolog packages, not missing npm dependencies. Make sure to install SWI-Prolog in a way you can use the bundled libraries. For instance, the following should work from command line:

> swipl

?- use_module(library(sgml)).
true.
?- use_module(library(chr)).
true.

In most Linux distributions there are software packages for SWI-Prolog available; e.g. swi-prolog in Ubuntu. The SWI-Prolog website introduces the build process for various operating systems. For Linux-OS, I recommend using the SWI-Prolog Version Manager swivm, which handles the installation of the required Prolog modules.

from xsd2json.

Closed since this is because of a broken SWI-Prolog installation. Nevertheless feel free to comment if you need help with your Prolog installation :)

from xsd2json.

I'm sorry to reopen the issue. I'm an absolute beginner with Prolog.
I properly setup my swipl with Aptitude and swivm as suggested

michel@obs-he-lm:~$ swipl --version
SWI-Prolog version 7.2.3 for x86_64-linux
michel@obs-he-lm:~$ swipl
Welcome to SWI-Prolog (Multi-threaded, 64 bits, Version 7.2.3)
Copyright (c) 1990-2015 ....
?- use_module(library(sgml)).
true.
?- use_module(library(chr)).
true.

When I try to process a schema, I get nothing on stdout; then I switch to the trace mode and I get the following truncated output.

michel@obs-he-lm:~$ xsd2json -t purchaseorder.xsd
CHR:   (0) Insert: node_attribute(/home/michel/purchaseorder.xsd,[0],xmlns:xsd,http://www.w3.org/2001/XMLSchema,source) # <0>
....
....
CHR:   (1) Redo: node_attribute(/home/michel/purchaseorder.xsd,[0],xmlns:xsd,http://www.w3.org/2001/XMLSchema,source) # <0>
CHR:   (0) Fail: node_attribute(/home/michel/purchaseorder.xsd,[0],xmlns:xsd,http://www.w3.org/2001/XMLSchema,source) # <0>
ERROR: Prolog initialisation failed:
ERROR: Domain error: `chr_port' expected, found `none'

I've no idea at all (and Google either) about that chr_port. I guess that others users can have to face the same problem, even if is not a real issue.

LM

from xsd2json.

No problem, you're welcome :) I will have a look at your posted problems in your recently opened issue #54.

from xsd2json.