485 lines
11 KiB
Python
Executable File
485 lines
11 KiB
Python
Executable File
#! /usr/bin/env python
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# A window-oriented recursive diff utility.
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# NB: This uses undocumented window classing modules.
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# TO DO:
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# - faster update after moving/copying one file
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# - diff flags (-b, etc.) should be global or maintained per window
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# - use a few fixed windows instead of creating new ones all the time
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# - ways to specify patterns to skip
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# (best by pointing at a file and clicking a special menu entry!)
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# - add rcsdiff menu commands
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# - add a way to view status of selected files without opening them
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# - add a way to diff two files with different names
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# - add a way to rename files
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# - keep backups of overwritten/deleted files
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# - a way to mark specified files as uninteresting for dircmp
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import sys
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import os
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import rand
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import commands
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import dircache
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import statcache
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import cmp
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import cmpcache
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import stdwin
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import gwin
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import textwin
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import filewin
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import tablewin
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import anywin
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mkarg = commands.mkarg
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mk2arg = commands.mk2arg
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# List of names to ignore in dircmp()
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#
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skiplist = ['RCS', 'CVS', '.Amake', 'tags', 'TAGS', '.', '..']
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# Function to determine whether a name should be ignored in dircmp().
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#
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def skipthis(file):
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return file[-1:] == '~' or file in skiplist
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def anydiff(a, b, flags): # Display differences between any two objects
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print 'diff', flags, a, b
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if os.path.isdir(a) and os.path.isdir(b):
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w = dirdiff(a, b, flags)
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else:
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w = filediff(a, b, flags)
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addstatmenu(w, [a, b])
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w.original_close = w.close
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w.close = close_dirwin
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return w
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def close_dirwin(w):
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close_subwindows(w, (), 0)
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w.original_close(w)
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def filediff(a, b, flags): # Display differences between two text files
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diffcmd = 'diff'
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if flags: diffcmd = diffcmd + mkarg(flags)
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diffcmd = diffcmd + mkarg(a) + mkarg(b)
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difftext = commands.getoutput(diffcmd)
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return textwin.open_readonly(mktitle(a, b), difftext)
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def dirdiff(a, b, flags): # Display differences between two directories
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data = diffdata(a, b, flags)
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w = tablewin.open(mktitle(a, b), data)
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w.flags = flags
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w.a = a
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w.b = b
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addviewmenu(w)
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addactionmenu(w)
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return w
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def diffdata(a, b, flags): # Compute directory differences.
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#
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a_only = [('A only:', header_action), ('', header_action)]
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b_only = [('B only:', header_action), ('', header_action)]
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ab_diff = [('A <> B:', header_action), ('', header_action)]
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ab_same = [('A == B:', header_action), ('', header_action)]
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data = [a_only, b_only, ab_diff, ab_same]
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#
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a_list = dircache.listdir(a)[:]
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b_list = dircache.listdir(b)[:]
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dircache.annotate(a, a_list)
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dircache.annotate(b, b_list)
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a_list.sort()
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b_list.sort()
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#
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for x in a_list:
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if x in ['./', '../']:
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pass
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elif x not in b_list:
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a_only.append(x, a_only_action)
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else:
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ax = os.path.join(a, x)
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bx = os.path.join(b, x)
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if os.path.isdir(ax) and os.path.isdir(bx):
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if flags == '-r':
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same = dircmp(ax, bx)
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else:
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same = 0
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else:
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try:
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same = cmp.cmp(ax, bx)
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except (RuntimeError, os.error):
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same = 0
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if same:
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ab_same.append(x, ab_same_action)
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else:
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ab_diff.append(x, ab_diff_action)
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#
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for x in b_list:
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if x in ['./', '../']:
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pass
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elif x not in a_list:
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b_only.append(x, b_only_action)
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#
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return data
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# Re-read the directory.
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# Attempt to find the selected item back.
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def update(w):
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setbusy(w)
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icol, irow = w.selection
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if 0 <= icol < len(w.data) and 2 <= irow < len(w.data[icol]):
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selname = w.data[icol][irow][0]
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else:
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selname = ''
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statcache.forget_dir(w.a)
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statcache.forget_dir(w.b)
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tablewin.select(w, (-1, -1))
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tablewin.update(w, diffdata(w.a, w.b, w.flags))
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if selname:
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for icol in range(len(w.data)):
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for irow in range(2, len(w.data[icol])):
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if w.data[icol][irow][0] == selname:
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tablewin.select(w, (icol, irow))
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break
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# Action functions for table items in directory diff windows
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def header_action(w, string, (icol, irow), (pos, clicks, button, mask)):
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tablewin.select(w, (-1, -1))
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def a_only_action(w, string, (icol, irow), (pos, clicks, button, mask)):
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tablewin.select(w, (icol, irow))
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if clicks == 2:
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w2 = anyopen(os.path.join(w.a, string))
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if w2:
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w2.parent = w
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def b_only_action(w, string, (icol, irow), (pos, clicks, button, mask)):
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tablewin.select(w, (icol, irow))
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if clicks == 2:
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w2 = anyopen(os.path.join(w.b, string))
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if w2:
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w2.parent = w
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def ab_diff_action(w, string, (icol, irow), (pos, clicks, button, mask)):
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tablewin.select(w, (icol, irow))
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if clicks == 2:
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w2 = anydiff(os.path.join(w.a, string), os.path.join(w.b, string),'')
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w2.parent = w
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def ab_same_action(w, string, sel, detail):
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ax = os.path.join(w.a, string)
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if os.path.isdir(ax):
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ab_diff_action(w, string, sel, detail)
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else:
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a_only_action(w, string, sel, detail)
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def anyopen(name): # Open any kind of document, ignore errors
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try:
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w = anywin.open(name)
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except (RuntimeError, os.error):
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stdwin.message('Can\'t open ' + name)
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return 0
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addstatmenu(w, [name])
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return w
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def dircmp(a, b): # Compare whether two directories are the same
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# To make this as fast as possible, it uses the statcache
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print ' dircmp', a, b
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a_list = dircache.listdir(a)
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b_list = dircache.listdir(b)
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for x in a_list:
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if skipthis(x):
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pass
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elif x not in b_list:
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return 0
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else:
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ax = os.path.join(a, x)
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bx = os.path.join(b, x)
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if statcache.isdir(ax) and statcache.isdir(bx):
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if not dircmp(ax, bx): return 0
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else:
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try:
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if not cmpcache.cmp(ax, bx): return 0
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except (RuntimeError, os.error):
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return 0
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for x in b_list:
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if skipthis(x):
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pass
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elif x not in a_list:
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return 0
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return 1
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# View menu (for dir diff windows only)
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def addviewmenu(w):
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w.viewmenu = m = w.menucreate('View')
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m.action = []
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add(m, 'diff -r A B', diffr_ab)
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add(m, 'diff A B', diff_ab)
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add(m, 'diff -b A B', diffb_ab)
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add(m, 'diff -c A B', diffc_ab)
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add(m, 'gdiff A B', gdiff_ab)
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add(m, ('Open A ', 'A'), open_a)
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add(m, ('Open B ', 'B'), open_b)
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add(m, 'Rescan', rescan)
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add(m, 'Rescan -r', rescan_r)
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# Action menu (for dir diff windows only)
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def addactionmenu(w):
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w.actionmenu = m = w.menucreate('Action')
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m.action = []
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add(m, 'cp A B', cp_ab)
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add(m, 'rm B', rm_b)
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add(m, '', nop)
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add(m, 'cp B A', cp_ba)
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add(m, 'rm A', rm_a)
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# Main menu (global):
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def mainmenu():
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m = stdwin.menucreate('Wdiff')
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m.action = []
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add(m, ('Quit wdiff', 'Q'), quit_wdiff)
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add(m, 'Close subwindows', close_subwindows)
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return m
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def add(m, text, action):
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m.additem(text)
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m.action.append(action)
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def quit_wdiff(w, m, item):
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if askyesno('Really quit wdiff altogether?', 1):
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sys.exit(0)
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def close_subwindows(w, m, item):
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while 1:
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for w2 in gwin.windows:
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if w2.parent == w:
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close_subwindows(w2, m, item)
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w2.close(w2)
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break # inner loop, continue outer loop
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else:
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break # outer loop
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def diffr_ab(w, m, item):
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dodiff(w, '-r')
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def diff_ab(w, m, item):
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dodiff(w, '')
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def diffb_ab(w, m, item):
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dodiff(w, '-b')
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def diffc_ab(w, m, item):
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dodiff(w, '-c')
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def gdiff_ab(w, m, item): # Call SGI's gdiff utility
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x = getselection(w)
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if x:
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a, b = os.path.join(w.a, x), os.path.join(w.b, x)
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if os.path.isdir(a) or os.path.isdir(b):
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stdwin.fleep() # This is for files only
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else:
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diffcmd = 'gdiff'
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diffcmd = diffcmd + mkarg(a) + mkarg(b) + ' &'
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print diffcmd
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sts = os.system(diffcmd)
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if sts: print 'Exit status', sts
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def dodiff(w, flags):
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x = getselection(w)
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if x:
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w2 = anydiff(os.path.join(w.a, x), os.path.join(w.b, x), flags)
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w2.parent = w
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def open_a(w, m, item):
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x = getselection(w)
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if x:
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w2 = anyopen(os.path.join(w.a, x))
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if w2:
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w2.parent = w
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def open_b(w, m, item):
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x = getselection(w)
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if x:
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w2 = anyopen(os.path.join(w.b, x))
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if w2:
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w2.parent = w
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def rescan(w, m, item):
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w.flags = ''
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update(w)
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def rescan_r(w, m, item):
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w.flags = '-r'
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update(w)
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def rm_a(w, m, item):
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x = getselection(w)
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if x:
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if x[-1:] == '/': x = x[:-1]
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x = os.path.join(w.a, x)
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if os.path.isdir(x):
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if askyesno('Recursively remove A directory ' + x, 1):
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runcmd('rm -rf' + mkarg(x))
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else:
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runcmd('rm -f' + mkarg(x))
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update(w)
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def rm_b(w, m, item):
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x = getselection(w)
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if x:
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if x[-1:] == '/': x = x[:-1]
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x = os.path.join(w.b, x)
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if os.path.isdir(x):
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if askyesno('Recursively remove B directory ' + x, 1):
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runcmd('rm -rf' + mkarg(x))
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else:
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runcmd('rm -f' + mkarg(x))
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update(w)
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def cp_ab(w, m, item):
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x = getselection(w)
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if x:
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if x[-1:] == '/': x = x[:-1]
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ax = os.path.join(w.a, x)
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bx = os.path.join(w.b, x)
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if os.path.isdir(ax):
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if os.path.exists(bx):
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m = 'Can\'t copy directory to existing target'
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stdwin.message(m)
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return
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runcmd('cp -r' + mkarg(ax) + mkarg(w.b))
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else:
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runcmd('cp' + mkarg(ax) + mk2arg(w.b, x))
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update(w)
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def cp_ba(w, m, item):
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x = getselection(w)
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if x:
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if x[-1:] == '/': x = x[:-1]
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ax = os.path.join(w.a, x)
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bx = os.path.join(w.b, x)
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if os.path.isdir(bx):
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if os.path.exists(ax):
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m = 'Can\'t copy directory to existing target'
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stdwin.message(m)
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return
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runcmd('cp -r' + mkarg(bx) + mkarg(w.a))
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else:
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runcmd('cp' + mk2arg(w.b, x) + mkarg(ax))
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update(w)
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def nop(args):
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pass
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def getselection(w):
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icol, irow = w.selection
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if 0 <= icol < len(w.data):
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if 0 <= irow < len(w.data[icol]):
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return w.data[icol][irow][0]
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stdwin.message('no selection')
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return ''
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def runcmd(cmd):
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print cmd
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sts, output = commands.getstatusoutput(cmd)
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if sts or output:
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if not output:
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output = 'Exit status ' + `sts`
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stdwin.message(output)
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# Status menu (for all kinds of windows)
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def addstatmenu(w, files):
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w.statmenu = m = w.menucreate('Stat')
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m.files = files
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m.action = []
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for file in files:
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m.additem(commands.getstatus(file))
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m.action.append(stataction)
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def stataction(w, m, item): # Menu item action for stat menu
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file = m.files[item]
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try:
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m.setitem(item, commands.getstatus(file))
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except os.error:
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stdwin.message('Can\'t get status for ' + file)
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# Compute a suitable window title from two paths
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def mktitle(a, b):
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if a == b: return a
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i = 1
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while a[-i:] == b[-i:]: i = i+1
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i = i-1
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if not i:
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return a + ' ' + b
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else:
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return '{' + a[:-i] + ',' + b[:-i] + '}' + a[-i:]
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# Ask a confirmation question
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def askyesno(prompt, default):
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try:
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return stdwin.askync(prompt, default)
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except KeyboardInterrupt:
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return 0
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# Display a message "busy" in a window, and mark it for updating
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def setbusy(w):
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left, top = w.getorigin()
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width, height = w.getwinsize()
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right, bottom = left + width, top + height
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d = w.begindrawing()
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d.erase((0, 0), (10000, 10000))
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text = 'Busy...'
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textwidth = d.textwidth(text)
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textheight = d.lineheight()
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h, v = left + (width-textwidth)/2, top + (height-textheight)/2
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d.text((h, v), text)
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del d
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w.change((0, 0), (10000, 10000))
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# Main function
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def main():
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print 'wdiff: warning: this program does NOT make backups'
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argv = sys.argv
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flags = ''
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if len(argv) >= 2 and argv[1][:1] == '-':
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flags = argv[1]
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del argv[1]
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stdwin.setdefscrollbars(0, 1)
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m = mainmenu() # Create menu earlier than windows
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if len(argv) == 2: # 1 argument
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w = anyopen(argv[1])
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if not w: return
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elif len(argv) == 3: # 2 arguments
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w = anydiff(argv[1], argv[2], flags)
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w.parent = ()
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else:
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sys.stdout = sys.stderr
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print 'usage:', argv[0], '[diff-flags] dir-1 [dir-2]'
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sys.exit(2)
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del w # It's preserved in gwin.windows
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while 1:
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try:
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gwin.mainloop()
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break
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except KeyboardInterrupt:
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pass # Just continue...
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# Start the main function (this is a script)
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main()
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