add spawn_read

Signed-off-by: Mattias Andrée <maandree@operamail.com>

2 files changed, 17 insertions, 2 deletions

diff --git a/examples/plugin-test b/examples/plugin-test
index 214449a..db316ee 100644
--- a/examples/plugin-test
+++ b/examples/plugin-test
@@ -41,7 +41,9 @@ def redraw():
     users = ['%s{%i}' % (colour_user(u) % u, len(users_[u])) for u in users_.keys()]
     users = 'Users: %s' % (' '.join(users))
     
-    text = '%s │ %s │ %s │ %s'
-    text %= (uptime, idle, loadavg, users)
+    time = spawn_read('date', '+%Y-(%m)%b-%d %T, %a w%V, %Z')
+    
+    text = '%s │ %s │ %s │ %s │ %s'
+    text %= (time, uptime, idle, loadavg, users)
     bar.draw_coloured_text(0, 10, 0, 2, text)
 
diff --git a/src/util.py b/src/util.py
index 25aac1f..e95c419 100644
--- a/src/util.py
+++ b/src/util.py
@@ -58,3 +58,16 @@ def spawn(*command):
     proc = subprocess.Popen(list(command), stderr = sys.stderr, stdout = subprocess.PIPE)
     return proc.stdout
 
+
+def spawn_read(*command):
+    '''
+    Spawn an external process and returns its output
+    
+    @param   command:*str  The command line
+    @return  :str          The process's output to stdout, without the final LF
+    '''
+    proc = subprocess.Popen(list(command), stderr = sys.stderr, stdout = subprocess.PIPE)
+    out = proc.stdout.read().decode('utf-8', 'replace')
+    if out.endswith('\n'):
+        out = out[:-1]
+    return out