[PATCH 3/3] pacat: State purpose of program depending how it was invoked

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From: Peter Meerwald <p.meerwald@xxxxxxxxxxxxxxxxxx>

see https://bugs.freedesktop.org/show_bug.cgi?id=68135

state purpose of paplay/parec/pamon/parecord/pacat when invoked with -h

Signed-off-by: Peter Meerwald <pmeerw at pmeerw.net>
---
 src/utils/pacat.c |   16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/utils/pacat.c b/src/utils/pacat.c
index e60dfca..d1f5502 100644
--- a/src/utils/pacat.c
+++ b/src/utils/pacat.c
@@ -52,6 +52,7 @@
 #define CLEAR_LINE "\x1B[K"
 
 static enum { RECORD, PLAYBACK } mode = PLAYBACK;
+static const char *purpose = NULL;
 
 static pa_context *context = NULL;
 static pa_stream *stream = NULL;
@@ -669,7 +670,8 @@ static void time_event_callback(pa_mainloop_api *m, pa_time_event *e, const stru
 
 static void help(const char *argv0) {
 
-    printf(_("%s [options]\n\n"
+    printf(_("%s [options]\n"
+             "%s\n\n"
              "  -h, --help                            Show this help\n"
              "      --version                         Show version\n\n"
              "  -r, --record                          Create a connection for recording\n"
@@ -705,7 +707,7 @@ static void help(const char *argv0) {
              "      --file-format[=FFORMAT]           Record/play formatted PCM data.\n"
              "      --list-file-formats               List available file formats.\n"
              "      --monitor-stream=INDEX            Record from the sink input with index INDEX.\n")
-           , argv0);
+           , argv0, purpose);
 }
 
 enum {
@@ -785,15 +787,19 @@ int main(int argc, char *argv[]) {
     if (strstr(bn, "play")) {
         mode = PLAYBACK;
         raw = false;
+        purpose = _("Play back encoded audio files on a PulseAudio sound server.");
     } else if (strstr(bn, "record")) {
         mode = RECORD;
         raw = false;
-    } else if (strstr(bn, "cat")) {
-        mode = PLAYBACK;
-        raw = true;
+        purpose = _("Capture audio data from a PulseAudio sound server and write it to a file.");
     } else if (strstr(bn, "rec") || strstr(bn, "mon")) {
         mode = RECORD;
         raw = true;
+        purpose = _("Capture audio data from a PulseAudio sound server and write it to STDOUT or the specified file.");
+    } else { /* pacat */
+        mode = PLAYBACK;
+        raw = true;
+        purpose = _("Play back audio data from STDIN or the specified file on a PulseAudio sound server.");
     }
 
     proplist = pa_proplist_new();
-- 
1.7.9.5



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