lix-project/lix
20
58
Fork 31
Code Issues 359 Code Review (Gerrit) Projects 3 Releases Wiki Activity

Filter Nix-specific ANSI escape sequences from stderr

Browse source 
The Nixpkgs stdenv prints some custom escape sequences to denote
nesting and stuff like that. Most terminals (e.g. xterm, konsole)
ignore them, but some do not (e.g. xfce4-terminal). So for the benefit
of the latter, filter them out.
This commit is contained in:
Eelco Dolstra 2014-08-20 14:17:07 +02:00
parent 029424d17d
commit 954188af27
1 changed files with 37 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

38
src/libstore/build.cc
View file

@ -2441,6 +2441,42 @@ void DerivationGoal::deleteTmpDir(bool force)
}
/* Filter out the special ANSI escape codes generated by Nixpkgs'
stdenv (used to denote nesting etc.). */
static string filterNixEscapes(const string & s)
{
string t, r;
enum { stTop, stEscape, stCSI } state = stTop;
for (auto c : s) {
if (state == stTop) {
if (c == '\e') {
state = stEscape;
r = c;
} else
t += c;
} else if (state == stEscape) {
r += c;
if (c == '[')
state = stCSI;
else {
t += r;
state = stTop;
}
} else {
r += c;
if (c >= 0x40 && c != 0x7e) {
if (c != 'p' && c != 'q' && c != 's' && c != 'a' && c != 'b')
t += r;
state = stTop;
r.clear();
}
}
}
t += r;
return t;
}
void DerivationGoal::handleChildOutput(int fd, const string & data)
{
if ((hook && fd == hook->builderOut.readSide) ||
@ -2455,7 +2491,7 @@ void DerivationGoal::handleChildOutput(int fd, const string & data)
return;
}
if (verbosity >= settings.buildVerbosity)
writeToStderr(data);
writeToStderr(filterNixEscapes(data));
if (bzLogFile) {
int err;
BZ2_bzWrite(&err, bzLogFile, (unsigned char *) data.data(), data.size());