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# Widget to display a man page
import regex
from Tkinter import *
from ScrolledText import ScrolledText
# XXX These fonts may have to be changed to match your system
BOLDFONT = '*-Courier-Bold-R-Normal-*-120-*'
ITALICFONT = '*-Courier-Medium-O-Normal-*-120-*'
# XXX Recognizing footers is system dependent
# (This one works for IRIX 5.2 and Solaris 2.2)
footerprog = regex.compile(
'^ Page [1-9][0-9]*[ \t]+\|^.*Last change:.*[1-9][0-9]*\n')
emptyprog = regex.compile('^[ \t]*\n')
ulprog = regex.compile('^[ \t]*[Xv!_][Xv!_ \t]*\n')
# Basic Man Page class -- does not disable editing
class EditableManPage(ScrolledText):
def __init__(self, master=None, cnf={}):
# Initialize base class
ScrolledText.__init__(self, master, cnf)
# Define tags for formatting styles
self.text.tag_config('bold', {'font': BOLDFONT})
self.text.tag_config('italic', {'font': ITALICFONT})
self.text.tag_config('underline', {'underline': 1})
# Create mapping from characters to tags
self.tagmap = {
'X': 'bold',
'_': 'underline',
'!': 'italic',
}
# Parse nroff output piped through ul -i and append it to the
# text widget
def parsefile(self, fp):
save_cursor = self.text['cursor']
self.text['cursor'] = 'watch'
self.text.update()
ok = 0
empty = 0
nextline = None
while 1:
if nextline:
line = nextline
nextline = None
else:
line = fp.readline()
if not line:
break
if emptyprog.match(line) >= 0:
empty = 1
continue
nextline = fp.readline()
if nextline and ulprog.match(nextline) >= 0:
propline = nextline
nextline = None
else:
propline = ''
if not ok:
ok = 1
empty = 0
continue
if footerprog.match(line) >= 0:
ok = 0
empty = 0
continue
if empty:
self.insert_prop('\n')
empty = 0
p = ''
j = 0
for i in range(min(len(propline), len(line))):
if propline[i] != p:
if j < i:
self.insert_prop(line[j:i], p)
j = i
p = propline[i]
self.insert_prop(line[j:])
self.text['cursor'] = save_cursor
def insert_prop(self, str, prop = ' '):
here = self.text.index(AtInsert())
self.text.insert(AtInsert(), str)
for tag in self.tagmap.values():
self.text.tag_remove(tag, here, AtInsert())
if self.tagmap.has_key(prop):
self.text.tag_add(self.tagmap[prop], here, AtInsert())
# Readonly Man Page class -- disables editing, otherwise the same
class ReadonlyManPage(EditableManPage):
def __init__(self, master=None, cnf={}):
# Initialize base class
EditableManPage.__init__(self, master, cnf)
# Make the text readonly
self.text.bind('<Any-KeyPress>', self.modify_cb)
self.text.bind('<Return>', self.modify_cb)
self.text.bind('<BackSpace>', self.modify_cb)
self.text.bind('<Delete>', self.modify_cb)
self.text.bind('<Control-h>', self.modify_cb)
self.text.bind('<Control-d>', self.modify_cb)
self.text.bind('<Control-v>', self.modify_cb)
def modify_cb(self, e):
pass
# Alias
ManPage = ReadonlyManPage
# Test program.
# usage: ManPage [manpage]; or ManPage [-f] file
# -f means that the file is nroff -man output run through ul -i
def test():
import os
import sys
# XXX This directory may be different on your system
MANDIR = '/usr/local/man/mann'
DEFAULTPAGE = 'Tcl'
formatted = 0
if sys.argv[1:] and sys.argv[1] == '-f':
formatted = 1
del sys.argv[1]
if sys.argv[1:]:
name = sys.argv[1]
else:
name = DEFAULTPAGE
if not formatted:
if name[-2:-1] != '.':
name = name + '.n'
name = os.path.join(MANDIR, name)
root = Tk()
root.minsize(1, 1)
manpage = ManPage(root, {'relief': 'sunken', 'bd': 2,
Pack: {'expand': 1, 'fill': 'both'}})
if formatted:
fp = open(name, 'r')
else:
fp = os.popen('nroff -man %s | ul -i' % name, 'r')
manpage.parsefile(fp)
root.mainloop()
# Run the test program when called as a script
if __name__ == '__main__':
test()
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