# 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.
import cgi, re, os, time, urllib
import encoding, node, util
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.
"""
return cgi.escape(text, 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 (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,
}
# tell hggettext to extract docstrings from these functions:
i18nfunctions = filters.values()