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Report substituter errors to clients of the Nix daemon

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This commit is contained in:
Eelco Dolstra 2012-08-01 11:19:24 -04:00
parent 4d1b64f118
commit c770a2422a
5 changed files with 53 additions and 30 deletions
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9
src/libutil/util.cc
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@ -253,7 +253,7 @@ string readLine(int fd)
if (errno != EINTR)
throw SysError("reading a line");
} else if (rd == 0)
throw Error("unexpected EOF reading a line");
throw EndOfFile("unexpected EOF reading a line");
else {
if (ch == '\n') return s;
s += ch;
@ -1015,6 +1015,13 @@ string concatStringsSep(const string & sep, const Strings & ss)
}
string chomp(const string & s)
{
size_t i = s.find_last_not_of(" \n\r\t");
return i == string::npos ? "" : string(s, 0, i);
}
string statusToString(int status)
{
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {

4
src/libutil/util.hh
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@ -292,6 +292,10 @@ Strings tokenizeString(const string & s, const string & separators = " \t\n\r");
string concatStringsSep(const string & sep, const Strings & ss);
/* Remove trailing whitespace from a string. */
string chomp(const string & s);
/* Convert the exit status of a child as returned by wait() into an
error string. */
string statusToString(int status);