Utility that can report terminal width and height.

pandas/util/terminal.py

@@ -0,0 +1,105 @@
+"""
+get_terminal_size() -- return width and height of console as a tuple
+
+code from:
+http://stackoverflow.com/questions/566746/how-to-get-console- window-width-in-
+python
+
+written by
+Harco Kuppens (http://stackoverflow.com/users/825214/harco-kuppens)
+
+It is mentioned in the stackoverflow response that this code works
+on linux, os x, windows and cygwin (windows).
+"""
+
+__all__=['get_terminal_size']
+
+
+def get_terminal_size():
+   import platform
+   current_os = platform.system()
+   tuple_xy=None
+   if current_os == 'Windows':
+       tuple_xy = _get_terminal_size_windows()
+       if tuple_xy is None:
+          tuple_xy = _get_terminal_size_tput()
+          # needed for window's python in cygwin's xterm!
+   if current_os == 'Linux' or \
+      current_os == 'Darwin' or \
+      current_os.startswith('CYGWIN'):
+       tuple_xy = _get_terminal_size_linux()
+   if tuple_xy is None:
+       tuple_xy = (80, 25)      # default value
+   return tuple_xy
+
+def _get_terminal_size_windows():
+    res=None
+    try:
+        from ctypes import windll, create_string_buffer
+
+        # stdin handle is -10
+        # stdout handle is -11
+        # stderr handle is -12
+
+        h = windll.kernel32.GetStdHandle(-12)
+        csbi = create_string_buffer(22)
+        res = windll.kernel32.GetConsoleScreenBufferInfo(h, csbi)
+    except:
+        return None
+    if res:
+        import struct
+        (bufx, bufy, curx, cury, wattr, left, top, right, bottom, maxx,
+                maxy) = struct.unpack("hhhhHhhhhhh", csbi.raw)
+        sizex = right - left + 1
+        sizey = bottom - top + 1
+        return sizex, sizey
+    else:
+        return None
+
+def _get_terminal_size_tput():
+    # get terminal width
+    # src: http://stackoverflow.com/questions/263890/how-do-i-find-the-width
+    # -height-of-a-terminal-window
+    try:
+       import subprocess
+       proc = subprocess.Popen(["tput", "cols"],
+                               stdin=subprocess.PIPE,
+                               stdout=subprocess.PIPE)
+       output=proc.communicate(input=None)
+       cols=int(output[0])
+       proc=subprocess.Popen(["tput", "lines"],
+                             stdin=subprocess.PIPE,
+                             stdout=subprocess.PIPE)
+       output=proc.communicate(input=None)
+       rows=int(output[0])
+       return (cols,rows)
+    except:
+       return None
+
+
+def _get_terminal_size_linux():
+    def ioctl_GWINSZ(fd):
+        try:
+            import fcntl, termios, struct, os
+            cr = struct.unpack('hh', fcntl.ioctl(fd, termios.TIOCGWINSZ,'1234'))
+        except:
+            return None
+        return cr
+    cr = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)
+    if not cr:
+        try:
+            fd = os.open(os.ctermid(), os.O_RDONLY)
+            cr = ioctl_GWINSZ(fd)
+            os.close(fd)
+        except:
+            pass
+    if not cr:
+        try:
+            cr = (env['LINES'], env['COLUMNS'])
+        except:
+            return None
+    return int(cr[1]), int(cr[0])
+
+if __name__ == "__main__":
+    sizex, sizey = get_terminal_size()
+    print  'width =', sizex, 'height =', sizey