Merge lp:~akkzilla/python-snippets/pysnippets into lp:~jonobacon/python-snippets/trunk

[Akkana Peck]

Three snippets: tee file descriptors, print in columns, and show an HTML fullscreen presentation (webkit-gtk).

[Jono Bacon (jonobacon)]

Thanks Akkana for your snippets, they look great! :-)

=== added file 'pythoncore/columnar_display.py'
--- pythoncore/columnar_display.py	1970-01-01 00:00:00 +0000
+++ pythoncore/columnar_display.py	2010-04-20 04:15:25 +0000
@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+#
+# [SNIPPET_NAME: Columnar display]
+# [SNIPPET_CATEGORIES: Python Core]
+# [SNIPPET_DESCRIPTION: Print a list of arguments in several columns]
+# [SNIPPET_AUTHOR: Akkana Peck <[e-mail]>]
+# [SNIPPET_LICENSE: GPL]
+def columnar_display(list, pagewidth=77) :
+    maxlen = 0
+    for item in list :
+        l = len(str(item))
+        if l > maxlen :
+            maxlen = l
+    maxlen += 2   # space it out a little more
+    numcol = int(pagewidth / maxlen)
+
+    i = 0
+    for item in list :
+        print '{0:{1}}'.format(item, maxlen),
+        i += 1
+        if i % numcol == 0 :
+            print '\n',
+
+list = [ 'Python Core', 'Python VTE', 'Regular Expression', 'socket',
+         'tarfile', 'Testing', 'threading', 'twitter', 'unittest',
+         'Upstart', 'Webkit', 'Zeitgeist' ]
+
+columnar_display(list)
 
=== added file 'pythoncore/tee.py'
--- pythoncore/tee.py	1970-01-01 00:00:00 +0000
+++ pythoncore/tee.py	2010-04-20 04:15:25 +0000
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+#
+# [SNIPPET_NAME: Tee]
+# [SNIPPET_CATEGORIES: Python Core]
+# [SNIPPET_DESCRIPTION: Duplicate output to two file descriptors, like Unix tee]
+# [SNIPPET_AUTHOR: Akkana Peck <[e-mail]>]
+# [SNIPPET_DOCS: http://shallowsky.com/blog/programming/python-tee.html]
+# [SNIPPET_LICENSE: GPL]
+import sys
+
+class tee :
+    def __init__(self, _fd1, _fd2) :
+        self.fd1 = _fd1
+        self.fd2 = _fd2
+
+    def __del__(self) :
+        if self.fd1 != sys.stdout and self.fd1 != sys.stderr :
+            self.fd1.close()
+        if self.fd2 != sys.stdout and self.fd2 != sys.stderr :
+            self.fd2.close()
+
+    def write(self, text) :
+        self.fd1.write(text)
+        self.fd2.write(text)
+
+    def flush(self) :
+        self.fd1.flush()
+        self.fd2.flush()
+
+if len(sys.argv) <= 1 :
+    print "Usage:", sys.argv[0], 'outputfile'
+    sys.exit(1)
+
+outputlog = open(sys.argv[1], "w")
+stderrsav = sys.stderr
+sys.stderr = tee(stderrsav, outputlog)
+
+print >> sys.stderr, "Test 1"
+sys.stderr.write("Test 2\n")
 
=== added file 'webkit/webkit_preso.py'
--- webkit/webkit_preso.py	1970-01-01 00:00:00 +0000
+++ webkit/webkit_preso.py	2010-04-20 04:15:25 +0000
@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+#
+# [SNIPPET_NAME: Presenter]
+# [SNIPPET_CATEGORIES: Webkit]
+# [SNIPPET_DESCRIPTION: Fullscreen presenter program, for HTML presentations]
+# [SNIPPET_AUTHOR: Akkana Peck <[e-mail]>]
+# [SNIPPET_DOCS: http://shallowsky.com/blog/programming/webkit-presenter.html]
+# [SNIPPET_LICENSE: GPL]
+
+import sys, os
+import gtk, gobject
+import webkit
+
+class WebBrowser(gtk.Window):
+    def __init__(self, url):
+        gtk.Window.__init__(self)
+
+        # Either run fullscreen, or set an initial window size
+        #self.set_default_size(1024,768)
+        self.fullscreen()
+
+        self._browser= webkit.WebView()
+        self.add(self._browser)
+        self.connect('destroy', gtk.main_quit)
+
+        self._browser.open(url)    # throw err if url isn't defined
+        self.show_all()
+
+if __name__ == "__main__":
+    if len(sys.argv) <= 1 :
+        print "Usage:", sys.argv[0], "url"
+        sys.exit(0)
+
+    # Figure out if it's a filename or a url
+    url = sys.argv[1]
+    if url.find(':') < 0 :
+        # If it's a local file, it needs to be converted to an absolute URL
+        if url[0] == '/' :
+            url = 'file://' + url
+        else :
+            url = 'file://' + os.getcwd() + '/' + url
+
+    gobject.threads_init()
+    webbrowser = WebBrowser(url)
+    gtk.main()
+