0025171: STEP Lexer - the strings with quote sign inside can't be properly lexed - MantisBT

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ID

Project

Category

View Status

Date Submitted

Last Update

0025171

Community

[OCCT] OCCT:Data Exchange

public

2014-08-20 14:16

2017-07-27 09:33

Reporter

drazmyslovich

Assigned To

gka

Priority

normal

Severity

major

Status

assigned

Resolution

open

Platform

Windows

OS

VC++ 2010

OS Version

64 bit

Product Version

[OCCT] 6.6.0

Target Version

[OCCT] 7.4.0*

Fixed in Version

Summary

0025171: STEP Lexer - the strings with quote sign inside can't be properly lexed

Description

In my case, I had a file generated by PRO/ENGINEER with some french words used as strings. Example: DESCRIPTIVE_REPRESENTATION_ITEM('MATIERE', 'Fil d'acier');
The current STEP lexer can't properly handle this situation and the application refuses to parse a file at all.

Steps To Reproduce

Import the attached infected as1 model

Tags

No tags attached.

Test case number

as1-oc-214_parse_error.stp (441,968 bytes) 2014-08-20 14:16

lex.step.c (50,704 bytes) 2014-08-20 14:25

Relationships

Notes
(0030935) drazmyslovich (developer) 2014-08-20 14:25	Unfortunately, here I can't provide a straight-forward fix to the problem. As a temporary fix on my side I use the modified lex.step.c file, which normally generated by flex from step.lex file. Since, I'm not that familiar with flex syntax, I would prefer somebody else to fix the original source file. While the modified lex.step.c I've attached to this ticket (all modification are marked with 0025171 string - 5 modifications in total)

(0030936) drazmyslovich (developer) 2014-08-20 14:26	Please, check the provided modifications and fix the original source file.

(0036813) akz (developer) 2015-01-29 13:42	The problem is that the regular expression for the text arguments (described in step.lex) does not pass the single apostrophe - ' in the text. Current regexp for the text arguments: [\']([\n]\|[\000\011-\046\050-\176\201-\237\240-\777]\|[\047][\047])*[\']

Issue History
Date Modified	Username	Field	Change
2014-08-20 14:16	drazmyslovich	New Issue
2014-08-20 14:16	drazmyslovich	Assigned To	=> gka
2014-08-20 14:16	drazmyslovich	File Added: as1-oc-214_parse_error.stp
2014-08-20 14:25	drazmyslovich	Note Added: 0030935
2014-08-20 14:25	drazmyslovich	File Added: lex.step.c
2014-08-20 14:26	drazmyslovich	Note Added: 0030936
2014-08-20 14:26	drazmyslovich	Status	new => assigned
2014-08-20 14:27	drazmyslovich	Description Updated	View Revisions
2014-09-26 16:21	abv	Target Version	6.8.0 => 7.1.0
2015-01-29 13:42	akz	Note Added: 0036813
2016-10-26 12:14	gka	Target Version	7.1.0 => 7.2.0
2017-07-27 09:33	abv	Target Version	7.2.0 => 7.4.0*

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