Makes "silent" build quieter.

This suppresses all "success chatter" from the daemon regression tests
when building in --silent (or -s) mode.  Failing cases still output
the usual messages (except for "Processing...").  Other regression
chatter is still present, but this puts a big dent in it.

This involves three changes:

1) It adds a -q option to gpsfake, to suppress the "Processing"
messages.

2) It adds a -Q option to regress-driver, which passes -q to gpsfake
and also suppresses its own output in the success case.  Failure
output is unaffected.

3) It adds the -Q option to regress-driver invocations when the build
is running in silent mode.

TESTED:
Ran regress-driver in normal, -q, and -Q modes.
Ran "scons build-all check", with and without -s.
Also tested an error case with a garbled .chk file.

3 files changed, 20 insertions, 6 deletions

diff --git a/SConstruct b/SConstruct
index 63ff4fc1..6bdb3c22 100644
--- a/SConstruct
+++ b/SConstruct
@@ -338,6 +338,8 @@ if env["slow"]:
 else:
     env['REGRESSOPTS'] = ""
 
+if env.GetOption("silent"):
+    env['REGRESSOPTS'] += " -Q"
 
 def announce(msg):
     if not env.GetOption("silent"):
@@ -1753,7 +1755,8 @@ else:
     gpsfake_tests = []
     for name, opts in [['pty', ''], ['udp', '-u'], ['tcp', '-o -t']]:
         gpsfake_tests.append(Utility('gpsfake-' + name, gps_herald,
-                                     '$SRCDIR/regress-driver -q %s %s'
+                                     '$SRCDIR/regress-driver'
+                                     ' $REGRESSOPTS -q %s %s'
                                      % (opts, gpsfake_log)))
     env.Alias('gpsfake-tests', gpsfake_tests)
 
diff --git a/gpsfake b/gpsfake
index 82e4809a..f9450359 100755
--- a/gpsfake
+++ b/gpsfake
@@ -106,7 +106,7 @@ def fakehook(linenumber, fakegps):
 
 if __name__ == '__main__':
     try:
-        (options, arguments) = getopt.getopt(sys.argv[1:], "1bc:D:ghilm:no:pP:r:s:StTuvx")
+        (options, arguments) = getopt.getopt(sys.argv[1:], "1bc:D:ghilm:no:pP:qr:s:StTuvx")
     except getopt.GetoptError as msg:
         print("gpsfake: " + str(msg))
         raise SystemExit(1)
@@ -127,6 +127,7 @@ if __name__ == '__main__':
     udp = False
     verbose = 0
     slow = False
+    quiet = False
     for (switch, val) in options:
         if switch == '-1':
             singleshot = True
@@ -154,6 +155,8 @@ if __name__ == '__main__':
             pipe = True
         elif switch == '-P':
             port = int(val)
+        elif switch == '-q':
+            quiet = True
         elif switch == '-r':
             client_init = val
         elif switch == '-s':
@@ -185,7 +188,7 @@ if __name__ == '__main__':
 
     if progress:
         baton = Baton("Processing %s" % ",".join(arguments), "done")
-    else:
+    elif not quiet:
         sys.stderr.write("Processing %s\n" % ",".join(arguments))
 
     # Don't allocate a private port when cycling logs for client testing.
diff --git a/regress-driver b/regress-driver
index 8092d84a..fe42970a 100755
--- a/regress-driver
+++ b/regress-driver
@@ -49,7 +49,8 @@ logfile=""
 help="0"
 baton=false
 quiet=false
-while getopts cl:sStbuvo:qh opt
+quieter=false
+while getopts cl:sStbuvo:qQh opt
 do
     case $opt in
 	c) testing=clientlib ;;	# 'client' rather than the daemon
@@ -62,6 +63,7 @@ do
 	v) mode=view ;;		# View result of generating a check file
 	o) opts="$opts $OPTARG" ;;	# Pass options to gpsfake
 	q) quiet=true ;;	# Suppress header/trailer messages
+	Q) quiet=true; quieter=true ;;	# Suppress all success chatter
 	h) help="1" ;;
     esac
 done
@@ -79,10 +81,11 @@ then
 	echo "-S  - run regression tests with realistic timing delays"
 	echo "-t <ots>  - Run regression tests w/baton"
 	echo "-b  - Rebuild regression check files"
-	echo "-u - Force UDP"
+	echo "-u  - Force UDP"
 	echo "-v  - view result of generating a check file"
 	echo "-o <opt> - Pass options to gpsfake"
 	echo "-q  - Suppress header/trailer messages"
+	echo "-Q  - Suppress all success chatter"
 	echo
 
 	exit 0
@@ -120,6 +123,11 @@ then
     opts="$opts -S"
 fi
 
+if [ $quieter = true ]
+then
+    opts="$opts -q"
+fi
+
 case $mode in
     regress|slowregress)
         [ $quiet = true ] || echo "Testing the $testing..." >&2
@@ -174,7 +182,7 @@ case $mode in
         else
             if [ $quiet = true ] && [ $total -eq 1 ] && [ $notfound -eq 0 ]
             then
-                echo "Regression test $1 successful"
+                [ $quieter = true ] || echo "Regression test $1 successful"
             else
                 echo "Regression test successful: no errors in $total tests ($notfound not found).";
             fi