From c71e12b899e73f267b9a4df33d5bfd38924fe9e2 Mon Sep 17 00:00:00 2001
From: Andreas Huggel <ahuggel@gmx.net>
Date: Fri, 10 Sep 2010 15:00:15 +0000
Subject: [PATCH] Added option -q (quiet) to silence warnings and error
 messages from the Exiv2 library to the exiv2 command line tool.

---
 src/exiv2.1              | 7 ++++++-
 src/exiv2.cpp            | 2 ++
 src/exiv2app.hpp         | 2 +-
 test/data/exiv2-test.out | 1 +
 4 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/exiv2.1 b/src/exiv2.1
index fb337236..637648e7 100644
--- a/src/exiv2.1
+++ b/src/exiv2.1
@@ -3,7 +3,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH EXIV2 1 "Feb 14, 2010"
+.TH EXIV2 1 "Sep 10, 2010"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -127,6 +127,11 @@ Show the program version and exit.
 .B \-v
 Be verbose during the program run.
 .TP
+.B \-q
+Silence warnings and error messages from the Exiv2 library during the
+program run (quiet). Note that options \fB\-v\fP and \fB\-q\fP can be
+used at the same time.
+.TP
 .B \-b
 Show large binary values (default is to suppress them).
 .TP
diff --git a/src/exiv2.cpp b/src/exiv2.cpp
index 6127a4e8..3ae33795 100644
--- a/src/exiv2.cpp
+++ b/src/exiv2.cpp
@@ -256,6 +256,7 @@ void Params::help(std::ostream& os) const
        << _("   -h      Display this help and exit.\n")
        << _("   -V      Show the program version and exit.\n")
        << _("   -v      Be verbose during the program run.\n")
+       << _("   -q      Silence warnings and error messages during the program run (quiet).\n")
        << _("   -b      Show large binary values.\n")
        << _("   -u      Show unknown tags.\n")
        << _("   -g key  Only output info for this key (grep).\n")
@@ -336,6 +337,7 @@ int Params::option(int opt, const std::string& optarg, int optopt)
     case 'h': help_ = true; break;
     case 'V': version_ = true; break;
     case 'v': verbose_ = true; break;
+    case 'q': Exiv2::LogMsg::setLevel(Exiv2::LogMsg::mute); break;
     case 'k': preserve_ = true; break;
     case 'b': binary_ = false; break;
     case 'u': unknown_ = false; break;
diff --git a/src/exiv2app.hpp b/src/exiv2app.hpp
index f8aada94..f010a71e 100644
--- a/src/exiv2app.hpp
+++ b/src/exiv2app.hpp
@@ -220,7 +220,7 @@ private:
       @brief Default constructor. Note that optstring_ is initialized here.
              The c'tor is private to force instantiation through instance().
      */
-    Params() : optstring_(":hVvfbuktTFa:Y:O:D:r:p:P:d:e:i:c:m:M:l:S:g:n:"),
+    Params() : optstring_(":hVvqfbuktTFa:Y:O:D:r:p:P:d:e:i:c:m:M:l:S:g:n:"),
                help_(false),
                version_(false),
                verbose_(false),
diff --git a/test/data/exiv2-test.out b/test/data/exiv2-test.out
index fe938591..3c1b9884 100644
--- a/test/data/exiv2-test.out
+++ b/test/data/exiv2-test.out
@@ -49,6 +49,7 @@ Options:
    -h      Display this help and exit.
    -V      Show the program version and exit.
    -v      Be verbose during the program run.
+   -q      Silence warnings and error messages during the program run (quiet).
    -b      Show large binary values.
    -u      Show unknown tags.
    -g key  Only output info for this key (grep).