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Edit File : ManPage.py \| Size : 6.70 KB
# Widget to display a man page import re from Tkinter import * from Tkinter import _tkinter 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 = re.compile( '^ Page [1-9][0-9][ \t]+\\|^.Last change:.[1-9][0-9]\n') emptyprog = re.compile('^[ \t]\n') ulprog = re.compile('^[ \t][Xv!_][Xv!_ \t]\n') # Basic Man Page class -- does not disable editing class EditableManPage(ScrolledText): # Initialize instance def __init__(self, master=None, cnf): # Initialize base class apply(ScrolledText.__init__, (self, master), cnf) # Define tags for formatting styles self.tag_config('X', underline=1) self.tag_config('!', font=BOLDFONT) self.tag_config('_', font=ITALICFONT) # Set state to idle self.fp = None self.lineno = 0 # Test whether we are busy parsing a file def busy(self): return self.fp != None # Ensure we're not busy def kill(self): if self.busy(): self._endparser() # Parse a file, in the background def asyncparsefile(self, fp): self._startparser(fp) self.tk.createfilehandler(fp, _tkinter.READABLE, self._filehandler) parsefile = asyncparsefile # Alias # I/O handler used by background parsing def _filehandler(self, fp, mask): nextline = self.fp.readline() if not nextline: self._endparser() return self._parseline(nextline) # Parse a file, now (cannot be aborted) def syncparsefile(self, fp): from select import select def avail(fp=fp, tout=0.0, select=select): return select([fp], [], [], tout)[0] height = self.getint(self['height']) self._startparser(fp) while 1: nextline = fp.readline() if not nextline: break self._parseline(nextline) self._endparser() # Initialize parsing from a particular file -- must not be busy def _startparser(self, fp): if self.busy(): raise RuntimeError, 'startparser: still busy' fp.fileno() # Test for file-ness self.fp = fp self.lineno = 0 self.ok = 0 self.empty = 0 self.buffer = None savestate = self['state'] self['state'] = NORMAL self.delete('1.0', END) self['state'] = savestate # End parsing -- must be busy, need not be at EOF def _endparser(self): if not self.busy(): raise RuntimeError, 'endparser: not busy' if self.buffer: self._parseline('') try: self.tk.deletefilehandler(self.fp) except TclError, msg: pass self.fp.close() self.fp = None del self.ok, self.empty, self.buffer # Parse a single line def _parseline(self, nextline): if not self.buffer: # Save this line -- we need one line read-ahead self.buffer = nextline return if emptyprog.match(self.buffer) >= 0: # Buffered line was empty -- set a flag self.empty = 1 self.buffer = nextline return textline = self.buffer if ulprog.match(nextline) >= 0: # Next line is properties for buffered line propline = nextline self.buffer = None else: # Next line is read-ahead propline = None self.buffer = nextline if not self.ok: # First non blank line after footer must be header # -- skip that too self.ok = 1 self.empty = 0 return if footerprog.match(textline) >= 0: # Footer -- start skipping until next non-blank line self.ok = 0 self.empty = 0 return savestate = self['state'] self['state'] = NORMAL if TkVersion >= 4.0: self.mark_set('insert', 'end-1c') else: self.mark_set('insert', END) if self.empty: # One or more previous lines were empty # -- insert one blank line in the text self._insert_prop('\n') self.lineno = self.lineno + 1 self.empty = 0 if not propline: # No properties self._insert_prop(textline) else: # Search for properties p = '' j = 0 for i in range(min(len(propline), len(textline))): if propline[i] != p: if j < i: self._insert_prop(textline[j:i], p) j = i p = propline[i] self._insert_prop(textline[j:]) self.lineno = self.lineno + 1 self['state'] = savestate # Insert a string at the end, with at most one property (tag) def _insert_prop(self, str, prop = ' '): here = self.index(AtInsert()) self.insert(AtInsert(), str) if TkVersion <= 4.0: tags = self.tag_names(here) for tag in tags: self.tag_remove(tag, here, AtInsert()) if prop != ' ': self.tag_add(prop, here, AtInsert()) # Readonly Man Page class -- disables editing, otherwise the same class ReadonlyManPage(EditableManPage): # Initialize instance def __init__(self, master=None, *cnf): cnf['state'] = DISABLED apply(EditableManPage.__init__, (self, master), cnf) # 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, borderwidth=2) manpage.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() Back

Edit File : ManPage.py | Size : 6.70 KB

# Widget to display a man page

import re
from Tkinter import *
from Tkinter import _tkinter
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 = re.compile(
        '^     Page [1-9][0-9]*[ \t]+\|^.*Last change:.*[1-9][0-9]*\n')
emptyprog = re.compile('^[ \t]*\n')
ulprog = re.compile('^[ \t]*[Xv!_][Xv!_ \t]*\n')

# Basic Man Page class -- does not disable editing
class EditableManPage(ScrolledText):

# Initialize instance
    def __init__(self, master=None, **cnf):
        # Initialize base class
        apply(ScrolledText.__init__, (self, master), cnf)

# Define tags for formatting styles
        self.tag_config('X', underline=1)
        self.tag_config('!', font=BOLDFONT)
        self.tag_config('_', font=ITALICFONT)

# Set state to idle
        self.fp = None
        self.lineno = 0

# Test whether we are busy parsing a file
    def busy(self):
        return self.fp != None

# Ensure we're not busy
    def kill(self):
        if self.busy():
            self._endparser()

# Parse a file, in the background
    def asyncparsefile(self, fp):
        self._startparser(fp)
        self.tk.createfilehandler(fp, _tkinter.READABLE,
                                  self._filehandler)

parsefile = asyncparsefile      # Alias

# I/O handler used by background parsing
    def _filehandler(self, fp, mask):
        nextline = self.fp.readline()
        if not nextline:
            self._endparser()
            return
        self._parseline(nextline)

# Parse a file, now (cannot be aborted)
    def syncparsefile(self, fp):
        from select import select
        def avail(fp=fp, tout=0.0, select=select):
            return select([fp], [], [], tout)[0]
        height = self.getint(self['height'])
        self._startparser(fp)
        while 1:
            nextline = fp.readline()
            if not nextline:
                break
            self._parseline(nextline)
        self._endparser()

# Initialize parsing from a particular file -- must not be busy
    def _startparser(self, fp):
        if self.busy():
            raise RuntimeError, 'startparser: still busy'
        fp.fileno()             # Test for file-ness
        self.fp = fp
        self.lineno = 0
        self.ok = 0
        self.empty = 0
        self.buffer = None
        savestate = self['state']
        self['state'] = NORMAL
        self.delete('1.0', END)
        self['state'] = savestate

# End parsing -- must be busy, need not be at EOF
    def _endparser(self):
        if not self.busy():
            raise RuntimeError, 'endparser: not busy'
        if self.buffer:
            self._parseline('')
        try:
            self.tk.deletefilehandler(self.fp)
        except TclError, msg:
            pass
        self.fp.close()
        self.fp = None
        del self.ok, self.empty, self.buffer

# Parse a single line
    def _parseline(self, nextline):
        if not self.buffer:
            # Save this line -- we need one line read-ahead
            self.buffer = nextline
            return
        if emptyprog.match(self.buffer) >= 0:
            # Buffered line was empty -- set a flag
            self.empty = 1
            self.buffer = nextline
            return
        textline = self.buffer
        if ulprog.match(nextline) >= 0:
            # Next line is properties for buffered line
            propline = nextline
            self.buffer = None
        else:
            # Next line is read-ahead
            propline = None
            self.buffer = nextline
        if not self.ok:
            # First non blank line after footer must be header
            # -- skip that too
            self.ok = 1
            self.empty = 0
            return
        if footerprog.match(textline) >= 0:
            # Footer -- start skipping until next non-blank line
            self.ok = 0
            self.empty = 0
            return
        savestate = self['state']
        self['state'] = NORMAL
        if TkVersion >= 4.0:
            self.mark_set('insert', 'end-1c')
        else:
            self.mark_set('insert', END)
        if self.empty:
            # One or more previous lines were empty
            # -- insert one blank line in the text
            self._insert_prop('\n')
            self.lineno = self.lineno + 1
            self.empty = 0
        if not propline:
            # No properties
            self._insert_prop(textline)
        else:
            # Search for properties
            p = ''
            j = 0
            for i in range(min(len(propline), len(textline))):
                if propline[i] != p:
                    if j < i:
                        self._insert_prop(textline[j:i], p)
                        j = i
                    p = propline[i]
            self._insert_prop(textline[j:])
        self.lineno = self.lineno + 1
        self['state'] = savestate

# Insert a string at the end, with at most one property (tag)
    def _insert_prop(self, str, prop = ' '):
        here = self.index(AtInsert())
        self.insert(AtInsert(), str)
        if TkVersion <= 4.0:
            tags = self.tag_names(here)
            for tag in tags:
                self.tag_remove(tag, here, AtInsert())
        if prop != ' ':
            self.tag_add(prop, here, AtInsert())

# Readonly Man Page class -- disables editing, otherwise the same
class ReadonlyManPage(EditableManPage):

# Initialize instance
    def __init__(self, master=None, **cnf):
        cnf['state'] = DISABLED
        apply(EditableManPage.__init__, (self, master), cnf)

# 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, borderwidth=2)
    manpage.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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