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Filter ANSI colors when not writing to a terminal

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Fixes https://github.com/NixOS/nixpkgs/issues/37114.
This commit is contained in:
Eelco Dolstra 2018-03-15 16:08:07 +01:00
parent 7b8914825a
commit 4868721506
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GPG key ID: 8170B4726D7198DE
4 changed files with 10 additions and 8 deletions
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2
src/libutil/logging.cc
View file

@ -53,7 +53,7 @@ public:
prefix = std::string("<") + c + ">";
}
writeToStderr(prefix + filterANSIEscapes(fs.s) + "\n");
writeToStderr(prefix + filterANSIEscapes(fs.s, !tty) + "\n");
}
void startActivity(ActivityId act, Verbosity lvl, ActivityType type,

4
src/libutil/util.cc
View file

@ -1185,7 +1185,7 @@ void ignoreException()
}
std::string filterANSIEscapes(const std::string & s, unsigned int width)
std::string filterANSIEscapes(const std::string & s, bool filterAll, unsigned int width)
{
std::string t, e;
size_t w = 0;
@ -1210,7 +1210,7 @@ std::string filterANSIEscapes(const std::string & s, unsigned int width)
if (i != s.end() && *i >= 0x40 && *i <= 0x5f) e += *i++;
}
if (last == 'm')
if (!filterAll && last == 'm')
t += e;
}

10
src/libutil/util.hh
View file

@ -391,11 +391,13 @@ void ignoreException();
#define ANSI_BLUE "\e[34;1m"
/* Truncate a string to 'width' printable characters. Certain ANSI
escape sequences (such as colour setting) are copied but not
included in the character count. Other ANSI escape sequences are
filtered. Also, tabs are expanded to spaces. */
/* Truncate a string to 'width' printable characters. If 'filterAll'
is true, all ANSI escape sequences are filtered out. Otherwise,
some escape sequences (such as colour setting) are copied but not
included in the character count. Also, tabs are expanded to
spaces. */
std::string filterANSIEscapes(const std::string & s,
bool filterAll = false,
unsigned int width = std::numeric_limits<unsigned int>::max());