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Make --help text pretty

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Kovid Goyal 2008-02-25 21:25:40 +00:00
parent 5be76be4b9
commit 1f4a0833c7
1 changed files with 41 additions and 3 deletions
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44
src/libprs500/__init__.py
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@ -18,15 +18,18 @@ __docformat__ = "epytext"
__author__ = "Kovid Goyal <kovid@kovidgoyal.net>" __author__ = "Kovid Goyal <kovid@kovidgoyal.net>"
__appname__ = 'libprs500' __appname__ = 'libprs500'
import sys, os, logging, mechanize, locale, cStringIO, re, subprocess import sys, os, logging, mechanize, locale, cStringIO, re, subprocess, textwrap
from gettext import GNUTranslations from gettext import GNUTranslations
from math import floor from math import floor
from optparse import OptionParser as _OptionParser from optparse import OptionParser as _OptionParser
from optparse import IndentedHelpFormatter
from ttfquery import findsystem, describe from ttfquery import findsystem, describe
from libprs500.translations.msgfmt import make from libprs500.translations.msgfmt import make
from libprs500.ebooks.chardet import detect from libprs500.ebooks.chardet import detect
from libprs500.terminfo import TerminalController
terminal_controller = TerminalController()
iswindows = 'win32' in sys.platform.lower() or 'win64' in sys.platform.lower() iswindows = 'win32' in sys.platform.lower() or 'win64' in sys.platform.lower()
isosx = 'darwin' in sys.platform.lower() isosx = 'darwin' in sys.platform.lower()
@ -64,16 +67,51 @@ def setup_cli_handlers(logger, level):
handler.setFormatter(logging.Formatter('[%(levelname)s] %(filename)s:%(lineno)s: %(message)s')) handler.setFormatter(logging.Formatter('[%(levelname)s] %(filename)s:%(lineno)s: %(message)s'))
logger.addHandler(handler) logger.addHandler(handler)
class CustomHelpFormatter(IndentedHelpFormatter):
def format_usage(self, usage):
return _("%sUsage%s: %s\n") % (terminal_controller.BLUE, terminal_controller.NORMAL, usage)
def format_heading(self, heading):
return "%*s%s%s%s:\n" % (self.current_indent, terminal_controller.BLUE,
"", heading, terminal_controller.NORMAL)
def format_option(self, option):
result = []
opts = self.option_strings[option]
opt_width = self.help_position - self.current_indent - 2
if len(opts) > opt_width:
opts = "%*s%s\n" % (self.current_indent, "",
terminal_controller.GREEN+opts+terminal_controller.NORMAL)
indent_first = self.help_position
else: # start help on same line as opts
opts = "%*s%-*s " % (self.current_indent, "", opt_width + len(terminal_controller.GREEN + terminal_controller.NORMAL),
terminal_controller.GREEN + opts + terminal_controller.NORMAL)
indent_first = 0
result.append(opts)
if option.help:
help_text = self.expand_default(option).split('\n')
help_lines = []
for line in help_text:
help_lines.extend(textwrap.wrap(line, self.help_width))
result.append("%*s%s\n" % (indent_first, "", help_lines[0]))
result.extend(["%*s%s\n" % (self.help_position, "", line)
for line in help_lines[1:]])
elif opts[-1] != "\n":
result.append("\n")
return "".join(result)+'\n'
class OptionParser(_OptionParser): class OptionParser(_OptionParser):
def __init__(self, def __init__(self,
usage='%prog [options] filename', usage='%prog [options] filename',
version=__appname__+' '+__version__, version='%%prog (%s %s)'%(__appname__, __version__),
epilog=_('Created by ')+__author__, epilog=_('Created by ')+__author__,
gui_mode=False, gui_mode=False,
**kwds): **kwds):
_OptionParser.__init__(self, usage=usage, version=version, epilog=epilog, **kwds) _OptionParser.__init__(self, usage=usage, version=version, epilog=epilog,
formatter=CustomHelpFormatter(), **kwds)
self.gui_mode = gui_mode self.gui_mode = gui_mode
def error(self, msg): def error(self, msg):