From c770a2422a47526d5eb336af6af4292df68dad2b Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Wed, 1 Aug 2012 11:19:24 -0400
Subject: Report substituter errors to clients of the Nix daemon

---
 src/libutil/util.cc | 9 ++++++++-
 src/libutil/util.hh | 4 ++++
 2 files changed, 12 insertions(+), 1 deletion(-)

(limited to 'src/libutil')

diff --git a/src/libutil/util.cc b/src/libutil/util.cc
index 689fc543af..086574058a 100644
--- a/src/libutil/util.cc
+++ b/src/libutil/util.cc
@@ -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) {
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index 9b8656f704..16633a0835 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -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);
-- 
cgit 1.4.1