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Merge pull request #947 from layus/fix-path-slash

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Improve error message on trailing path slashes
This commit is contained in:
Eelco Dolstra 2016-12-06 15:21:17 +01:00 • committed by GitHub
commit ae71895f55
2 changed files with 18 additions and 4 deletions
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16
src/libexpr/lexer.l
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@ -87,8 +87,8 @@ static Expr * unescapeStr(SymbolTable & symbols, const char * s)
ID [a-zA-Z\_][a-zA-Z0-9\_\'\-]* ID [a-zA-Z\_][a-zA-Z0-9\_\'\-]*
INT [0-9]+ INT [0-9]+
FLOAT (([1-9][0-9]*\.[0-9]*)|(0?\.[0-9]+))([Ee][+-]?[0-9]+)? FLOAT (([1-9][0-9]*\.[0-9]*)|(0?\.[0-9]+))([Ee][+-]?[0-9]+)?
PATH [a-zA-Z0-9\.\_\-\+]*(\/[a-zA-Z0-9\.\_\-\+]+)+ PATH [a-zA-Z0-9\.\_\-\+]*(\/[a-zA-Z0-9\.\_\-\+]+)+\/?
HPATH \~(\/[a-zA-Z0-9\.\_\-\+]+)+ HPATH \~(\/[a-zA-Z0-9\.\_\-\+]+)+\/?
SPATH \<[a-zA-Z0-9\.\_\-\+]+(\/[a-zA-Z0-9\.\_\-\+]+)*\> SPATH \<[a-zA-Z0-9\.\_\-\+]+(\/[a-zA-Z0-9\.\_\-\+]+)*\>
URI [a-zA-Z][a-zA-Z0-9\+\-\.]*\:[a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']+ URI [a-zA-Z][a-zA-Z0-9\+\-\.]*\:[a-zA-Z0-9\%\/\?\:\@\&\=\+\$\,\-\_\.\!\~\*\']+
@ -182,8 +182,16 @@ or { return OR_KW; }
<INITIAL,INSIDE_DOLLAR_CURLY>{ <INITIAL,INSIDE_DOLLAR_CURLY>{
{PATH} { yylval->path = strdup(yytext); return PATH; } {PATH} { if (yytext[yyleng-1] == '/')
{HPATH} { yylval->path = strdup(yytext); return HPATH; } throw ParseError(format("Invalid path '%1%'; trailing slashes are not allowed in paths") % yytext);
yylval->path = strdup(yytext);
return PATH;
}
{HPATH} { if (yytext[yyleng-1] == '/')
throw ParseError(format("Invalid path '%1%'; trailing slashes are not allowed in paths") % yytext);
yylval->path = strdup(yytext);
return HPATH;
}
{SPATH} { yylval->path = strdup(yytext); return SPATH; } {SPATH} { yylval->path = strdup(yytext); return SPATH; }
{URI} { yylval->uri = strdup(yytext); return URI; } {URI} { yylval->uri = strdup(yytext); return URI; }

6
tests/lang/eval-fail-path-slash.nix Normal file
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@ -0,0 +1,6 @@
# Trailing slashes in paths are not allowed.
# This restriction could be lifted sometime,
# for example if we make '/' a path concatenation operator.
# See https://github.com/NixOS/nix/issues/1138
# and http://lists.science.uu.nl/pipermail/nix-dev/2016-June/020829.html
/nix/store/