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parsetl: better handling of MS-DOS line endings

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* spot/parsetl/scantl.ll: Ignore \r.
* tests/core/lbt.test: Add a test.
* NEWS: Mention the issue.
This commit is contained in:
Alexandre Duret-Lutz 2019-02-02 11:39:03 +01:00
parent 056ec02b21
commit ea9d894d01
3 changed files with 22 additions and 15 deletions
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4
NEWS
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@ -21,6 +21,10 @@ New in spot 2.7.0.dev (not yet release)
converted into IndexError Python exceptions (instead of aborting
the program).
- The LTL parser would choke on carriage returns when command-line
tools such as ltlfilt, ltlcross, or ltl2tgba were run on files of
formulas with MS-DOS line endings.
New in spot 2.7 (2018-12-11)
Command-line tools:

26
spot/parsetl/scantl.ll
View file

@ -1,9 +1,9 @@
/* -*- coding: utf-8 -*-
** Copyright (C) 2010-2015, 2017, 2018, Laboratoire de Recherche et
** Copyright (C) 2010-2015, 2017-2019, Laboratoire de Recherche et
** Développement de l'Epita (LRDE).
** Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
** département Systèmes Répartis Coopératifs (SRC), Université Pierre
** et Marie Curie.
** Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6
** (LIP6), département Systèmes Répartis Coopératifs (SRC), Université
** Pierre et Marie Curie.
**
** This file is part of Spot, a model checking library.
**
@ -169,7 +169,7 @@ eol2 (\n\r)+|(\r\n)+
++parent_level;
yylval->str->append(yytext, yyleng);
}
"}"[ \t\n]*"!" {
"}"[ \t]*"!" {
if (--parent_level)
{
yylval->str->append(yytext, yyleng);
@ -205,7 +205,7 @@ eol2 (\n\r)+|(\r\n)+
}
")" BEGIN(not_prop); return token::PAR_CLOSE;
"}"[ \t\n]*"!" BEGIN(not_prop); return token::BRACE_BANG_CLOSE;
"}"[ \t]*"!" BEGIN(not_prop); return token::BRACE_BANG_CLOSE;
"}" BEGIN(not_prop); return token::BRACE_CLOSE;
/* Must go before the other operators, because the F of FALSE
@ -280,12 +280,12 @@ eol2 (\n\r)+|(\r\n)+
We also have to deal with the Spin-like notation for G.
X[]f = XGf
*/
"X"[ \t\n]*"[]" yyless(1); return token::OP_X;
"F"[ \t\n]*"[]" yyless(1); return token::OP_F;
"G"[ \t\n]*"[]" yyless(1); return token::OP_G;
"X"[ \t\n]*"[" BEGIN(sqbracket); return token::OP_XREP;
"F"[ \t\n]*"[" BEGIN(sqbracket); return token::OP_FREP;
"G"[ \t\n]*"[" BEGIN(sqbracket); return token::OP_GREP;
"X"[ \t\n\r]*"[]" yyless(1); return token::OP_X;
"F"[ \t\n\r]*"[]" yyless(1); return token::OP_F;
"G"[ \t\n\r]*"[]" yyless(1); return token::OP_G;
"X"[ \t\n\r]*"[" BEGIN(sqbracket); return token::OP_XREP;
"F"[ \t\n\r]*"[" BEGIN(sqbracket); return token::OP_FREP;
"G"[ \t\n\r]*"[" BEGIN(sqbracket); return token::OP_GREP;
/* <> (DIAMOND) and [] (BOX), are used in Spin.
() (CIRCLE) is not, but would make sense. */
"F"|{DIAMOND} BEGIN(0); return token::OP_F;
@ -301,7 +301,7 @@ eol2 (\n\r)+|(\r\n)+
"=0"|"̅"|"̄" return token::OP_POST_NEG;
"=1" return token::OP_POST_POS;
<*>[ \t\n]+ /* discard whitespace */ yylloc->step ();
<*>[ \t\n\r]+ /* discard whitespace */ yylloc->step ();
/* An Atomic proposition cannot start with the letter
used by a unary operator (F,G,X), unless this

7
tests/core/lbt.test
View file

@ -1,6 +1,6 @@
#!/bin/sh
# -*- coding: utf-8 -*-
# Copyright (C) 2013, 2016, 2017 Laboratoire de Recherche et
# Copyright (C) 2013, 2016, 2017, 2019 Laboratoire de Recherche et
# Développement de l'Epita (LRDE).
#
# This file is part of Spot, a model checking library.
@ -97,10 +97,13 @@ test `wc -l < formulas.2` -eq 168
test `wc -l < formulas.3` -eq 168
test `wc -l < formulas.4` -eq 168
# Add some carriage returns to simulate MS-DOS files and
# make sure our parser does not mind.
sed 's/$/\r/' formulas.2 > formulas.2ms
# The --csv-escape option is now obsolete and replaced by double
# quotes in the format string. So eventually the first two lines
# should disappear.
run 0 ltlfilt formulas.2 --csv-escape --format='%L,%f' > formulas.5
run 0 ltlfilt formulas.2ms --csv-escape --format='%L,%f' > formulas.5
run 0 ltlfilt formulas.5/2 --csv-escape --format='%L,%f' > formulas.6
run 0 ltlfilt formulas.2 --format='%L,"%f"' > formulas.5a
run 0 ltlfilt formulas.5/2 --format='%L,"%f"' > formulas.6a