hgk: simplify tags parser
As when hg tags is being called without -v option, it returns
lines with two elements in each, we can just interate them as
if it were a usual Tcl list using foreach and two variables.
Line endings and whitespace don't matter when doing so, so we
may keep them as is.
When we're processing the lines, tag variable is assigned a tag
name, and rev is a string in form of revision:hash which we can
split on colon. As Tcl8.4 lacks lassign command, and using lindex
makes code a bit less readable, we use foreach to iterate over
two-element list.
# template-filters.py - common template expansion filters
#
# Copyright 2005-2008 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from i18n import _
import cgi, re, os, time, urllib
import encoding, node, util, error
import hbisect
def addbreaks(text):
""":addbreaks: Any text. Add an XHTML "<br />" tag before the end of
every line except the last.
"""
return text.replace('\n', '<br/>\n')
agescales = [("year", 3600 * 24 * 365),
("month", 3600 * 24 * 30),
("week", 3600 * 24 * 7),
("day", 3600 * 24),
("hour", 3600),
("minute", 60),
("second", 1)]
def age(date):
""":age: Date. Returns a human-readable date/time difference between the
given date/time and the current date/time.
"""
def plural(t, c):
if c == 1:
return t
return t + "s"
def fmt(t, c):
return "%d %s" % (c, plural(t, c))
now = time.time()
then = date[0]
future = False
if then > now:
future = True
delta = max(1, int(then - now))
if delta > agescales[0][1] * 30:
return 'in the distant future'
else:
delta = max(1, int(now - then))
if delta > agescales[0][1] * 2:
return util.shortdate(date)
for t, s in agescales:
n = delta // s
if n >= 2 or s == 1:
if future:
return '%s from now' % fmt(t, n)
return '%s ago' % fmt(t, n)
def basename(path):
""":basename: Any text. Treats the text as a path, and returns the last
component of the path after splitting by the path separator
(ignoring trailing separators). For example, "foo/bar/baz" becomes
"baz" and "foo/bar//" becomes "bar".
"""
return os.path.basename(path)
def datefilter(text):
""":date: Date. Returns a date in a Unix date format, including the
timezone: "Mon Sep 04 15:13:13 2006 0700".
"""
return util.datestr(text)
def domain(author):
""":domain: Any text. Finds the first string that looks like an email
address, and extracts just the domain component. Example: ``User
<user@example.com>`` becomes ``example.com``.
"""
f = author.find('@')
if f == -1:
return ''
author = author[f + 1:]
f = author.find('>')
if f >= 0:
author = author[:f]
return author
def email(text):
""":email: Any text. Extracts the first string that looks like an email
address. Example: ``User <user@example.com>`` becomes
``user@example.com``.
"""
return util.email(text)
def escape(text):
""":escape: Any text. Replaces the special XML/XHTML characters "&", "<"
and ">" with XML entities, and filters out NUL characters.
"""
return cgi.escape(text.replace('\0', ''), True)
para_re = None
space_re = None
def fill(text, width):
'''fill many paragraphs.'''
global para_re, space_re
if para_re is None:
para_re = re.compile('(\n\n|\n\\s*[-*]\\s*)', re.M)
space_re = re.compile(r' +')
def findparas():
start = 0
while True:
m = para_re.search(text, start)
if not m:
uctext = unicode(text[start:], encoding.encoding)
w = len(uctext)
while 0 < w and uctext[w - 1].isspace():
w -= 1
yield (uctext[:w].encode(encoding.encoding),
uctext[w:].encode(encoding.encoding))
break
yield text[start:m.start(0)], m.group(1)
start = m.end(1)
return "".join([space_re.sub(' ', util.wrap(para, width=width)) + rest
for para, rest in findparas()])
def fill68(text):
""":fill68: Any text. Wraps the text to fit in 68 columns."""
return fill(text, 68)
def fill76(text):
""":fill76: Any text. Wraps the text to fit in 76 columns."""
return fill(text, 76)
def firstline(text):
""":firstline: Any text. Returns the first line of text."""
try:
return text.splitlines(True)[0].rstrip('\r\n')
except IndexError:
return ''
def hexfilter(text):
""":hex: Any text. Convert a binary Mercurial node identifier into
its long hexadecimal representation.
"""
return node.hex(text)
def hgdate(text):
""":hgdate: Date. Returns the date as a pair of numbers: "1157407993
25200" (Unix timestamp, timezone offset).
"""
return "%d %d" % text
def isodate(text):
""":isodate: Date. Returns the date in ISO 8601 format: "2009-08-18 13:00
+0200".
"""
return util.datestr(text, '%Y-%m-%d %H:%M %1%2')
def isodatesec(text):
""":isodatesec: Date. Returns the date in ISO 8601 format, including
seconds: "2009-08-18 13:00:13 +0200". See also the rfc3339date
filter.
"""
return util.datestr(text, '%Y-%m-%d %H:%M:%S %1%2')
def indent(text, prefix):
'''indent each non-empty line of text after first with prefix.'''
lines = text.splitlines()
num_lines = len(lines)
endswithnewline = text[-1:] == '\n'
def indenter():
for i in xrange(num_lines):
l = lines[i]
if i and l.strip():
yield prefix
yield l
if i < num_lines - 1 or endswithnewline:
yield '\n'
return "".join(indenter())
def json(obj):
if obj is None or obj is False or obj is True:
return {None: 'null', False: 'false', True: 'true'}[obj]
elif isinstance(obj, int) or isinstance(obj, float):
return str(obj)
elif isinstance(obj, str):
u = unicode(obj, encoding.encoding, 'replace')
return '"%s"' % jsonescape(u)
elif isinstance(obj, unicode):
return '"%s"' % jsonescape(obj)
elif util.safehasattr(obj, 'keys'):
out = []
for k, v in obj.iteritems():
s = '%s: %s' % (json(k), json(v))
out.append(s)
return '{' + ', '.join(out) + '}'
elif util.safehasattr(obj, '__iter__'):
out = []
for i in obj:
out.append(json(i))
return '[' + ', '.join(out) + ']'
else:
raise TypeError('cannot encode type %s' % obj.__class__.__name__)
def _uescape(c):
if ord(c) < 0x80:
return c
else:
return '\\u%04x' % ord(c)
_escapes = [
('\\', '\\\\'), ('"', '\\"'), ('\t', '\\t'), ('\n', '\\n'),
('\r', '\\r'), ('\f', '\\f'), ('\b', '\\b'),
]
def jsonescape(s):
for k, v in _escapes:
s = s.replace(k, v)
return ''.join(_uescape(c) for c in s)
def localdate(text):
""":localdate: Date. Converts a date to local date."""
return (util.parsedate(text)[0], util.makedate()[1])
def nonempty(str):
""":nonempty: Any text. Returns '(none)' if the string is empty."""
return str or "(none)"
def obfuscate(text):
""":obfuscate: Any text. Returns the input text rendered as a sequence of
XML entities.
"""
text = unicode(text, encoding.encoding, 'replace')
return ''.join(['&#%d;' % ord(c) for c in text])
def permissions(flags):
if "l" in flags:
return "lrwxrwxrwx"
if "x" in flags:
return "-rwxr-xr-x"
return "-rw-r--r--"
def person(author):
""":person: Any text. Returns the name before an email address,
interpreting it as per RFC 5322.
>>> person('foo@bar')
'foo'
>>> person('Foo Bar <foo@bar>')
'Foo Bar'
>>> person('"Foo Bar" <foo@bar>')
'Foo Bar'
>>> person('"Foo \"buz\" Bar" <foo@bar>')
'Foo "buz" Bar'
>>> # The following are invalid, but do exist in real-life
...
>>> person('Foo "buz" Bar <foo@bar>')
'Foo "buz" Bar'
>>> person('"Foo Bar <foo@bar>')
'Foo Bar'
"""
if '@' not in author:
return author
f = author.find('<')
if f != -1:
return author[:f].strip(' "').replace('\\"', '"')
f = author.find('@')
return author[:f].replace('.', ' ')
def rfc3339date(text):
""":rfc3339date: Date. Returns a date using the Internet date format
specified in RFC 3339: "2009-08-18T13:00:13+02:00".
"""
return util.datestr(text, "%Y-%m-%dT%H:%M:%S%1:%2")
def rfc822date(text):
""":rfc822date: Date. Returns a date using the same format used in email
headers: "Tue, 18 Aug 2009 13:00:13 +0200".
"""
return util.datestr(text, "%a, %d %b %Y %H:%M:%S %1%2")
def short(text):
""":short: Changeset hash. Returns the short form of a changeset hash,
i.e. a 12 hexadecimal digit string.
"""
return text[:12]
def shortbisect(text):
""":shortbisect: Any text. Treats `text` as a bisection status, and
returns a single-character representing the status (G: good, B: bad,
S: skipped, U: untested, I: ignored). Returns single space if `text`
is not a valid bisection status.
"""
return hbisect.shortlabel(text) or ' '
def shortdate(text):
""":shortdate: Date. Returns a date like "2006-09-18"."""
return util.shortdate(text)
def stringescape(text):
return text.encode('string_escape')
def stringify(thing):
""":stringify: Any type. Turns the value into text by converting values into
text and concatenating them.
"""
if util.safehasattr(thing, '__iter__') and not isinstance(thing, str):
return "".join([stringify(t) for t in thing if t is not None])
return str(thing)
def strip(text):
""":strip: Any text. Strips all leading and trailing whitespace."""
return text.strip()
def stripdir(text):
""":stripdir: Treat the text as path and strip a directory level, if
possible. For example, "foo" and "foo/bar" becomes "foo".
"""
dir = os.path.dirname(text)
if dir == "":
return os.path.basename(text)
else:
return dir
def tabindent(text):
""":tabindent: Any text. Returns the text, with every line except the
first starting with a tab character.
"""
return indent(text, '\t')
def urlescape(text):
""":urlescape: Any text. Escapes all "special" characters. For example,
"foo bar" becomes "foo%20bar".
"""
return urllib.quote(text)
def userfilter(text):
""":user: Any text. Returns a short representation of a user name or email
address."""
return util.shortuser(text)
def emailuser(text):
""":emailuser: Any text. Returns the user portion of an email address."""
return util.emailuser(text)
def xmlescape(text):
text = (text
.replace('&', '&')
.replace('<', '<')
.replace('>', '>')
.replace('"', '"')
.replace("'", ''')) # ' invalid in HTML
return re.sub('[\x00-\x08\x0B\x0C\x0E-\x1F]', ' ', text)
filters = {
"addbreaks": addbreaks,
"age": age,
"basename": basename,
"date": datefilter,
"domain": domain,
"email": email,
"escape": escape,
"fill68": fill68,
"fill76": fill76,
"firstline": firstline,
"hex": hexfilter,
"hgdate": hgdate,
"isodate": isodate,
"isodatesec": isodatesec,
"json": json,
"jsonescape": jsonescape,
"localdate": localdate,
"nonempty": nonempty,
"obfuscate": obfuscate,
"permissions": permissions,
"person": person,
"rfc3339date": rfc3339date,
"rfc822date": rfc822date,
"short": short,
"shortbisect": shortbisect,
"shortdate": shortdate,
"stringescape": stringescape,
"stringify": stringify,
"strip": strip,
"stripdir": stripdir,
"tabindent": tabindent,
"urlescape": urlescape,
"user": userfilter,
"emailuser": emailuser,
"xmlescape": xmlescape,
}
def websub(text, websubtable):
""":websub: Any text. Only applies to hgweb. Applies the regular
expression replacements defined in the websub section.
"""
if websubtable:
for regexp, format in websubtable:
text = regexp.sub(format, text)
return text
def fillfunc(context, mapping, args):
if not (1 <= len(args) <= 2):
raise error.ParseError(_("fill expects one or two arguments"))
text = stringify(args[0][0](context, mapping, args[0][1]))
width = 76
if len(args) == 2:
try:
width = int(stringify(args[1][0](context, mapping, args[1][1])))
except ValueError:
raise error.ParseError(_("fill expects an integer width"))
return fill(text, width)
def datefunc(context, mapping, args):
if not (1 <= len(args) <= 2):
raise error.ParseError(_("date expects one or two arguments"))
date = args[0][0](context, mapping, args[0][1])
if len(args) == 2:
fmt = stringify(args[1][0](context, mapping, args[1][1]))
return util.datestr(date, fmt)
return util.datestr(date)
funcs = {
"fill": fillfunc,
"date": datefunc,
}
# tell hggettext to extract docstrings from these functions:
i18nfunctions = filters.values()