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nix develop: Handle 'declare -ax' in bash output

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Fixes 'nix develop nixpkgs#qpdfview'.
This commit is contained in:
Eelco Dolstra 2020-10-21 17:54:21 +02:00
parent ecfebde6ff
commit e556a1beb7
1 changed files with 9 additions and 6 deletions
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15
src/nix/develop.cc
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@ -39,21 +39,24 @@ BuildEnvironment readEnvironment(const Path & path)
static std::string varNameRegex =
R"re((?:[a-zA-Z_][a-zA-Z0-9_]*))re";
static std::regex declareRegex(
"^declare -x (" + varNameRegex + ")" +
R"re((?:="((?:[^"\\]|\\.)*)")?\n)re");
static std::string simpleStringRegex =
R"re((?:[a-zA-Z0-9_/:\.\-\+=]*))re";
static std::string quotedStringRegex =
static std::string dquotedStringRegex =
R"re((?:\$?"(?:[^"\\]|\\[$`"\\\n])*"))re";
static std::string squotedStringRegex =
R"re((?:\$?'(?:[^'\\]|\\[abeEfnrtv\\'"?])*'))re";
static std::string indexedArrayRegex =
R"re((?:\(( *\[[0-9]+\]="(?:[^"\\]|\\.)*")*\)))re";
static std::regex declareRegex(
"^declare -a?x (" + varNameRegex + ")(=(" +
dquotedStringRegex + "|" + indexedArrayRegex + "))?\n");
static std::regex varRegex(
"^(" + varNameRegex + ")=(" + simpleStringRegex + "|" + quotedStringRegex + "|" + indexedArrayRegex + ")\n");
"^(" + varNameRegex + ")=(" + simpleStringRegex + "|" + squotedStringRegex + "|" + indexedArrayRegex + ")\n");
/* Note: we distinguish between an indexed and associative array
using the space before the closing parenthesis. Will