# templater.py - template expansion for output
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
from demandload import demandload
from i18n import gettext as _
from node import *
demandload(globals(), "cStringIO cgi re sys os time urllib util textwrap")
esctable = {
'\\': '\\',
'r': '\r',
't': '\t',
'n': '\n',
'v': '\v',
}
def parsestring(s, quoted=True):
'''parse a string using simple c-like syntax.
string must be in quotes if quoted is True.'''
fp = cStringIO.StringIO()
if quoted:
first = s[0]
if len(s) < 2: raise SyntaxError(_('string too short'))
if first not in "'\"": raise SyntaxError(_('invalid quote'))
if s[-1] != first: raise SyntaxError(_('unmatched quotes'))
s = s[1:-1]
escape = False
for c in s:
if escape:
fp.write(esctable.get(c, c))
escape = False
elif c == '\\': escape = True
elif quoted and c == first: raise SyntaxError(_('string ends early'))
else: fp.write(c)
if escape: raise SyntaxError(_('unterminated escape'))
return fp.getvalue()
class templater(object):
'''template expansion engine.
template expansion works like this. a map file contains key=value
pairs. if value is quoted, it is treated as string. otherwise, it
is treated as name of template file.
templater is asked to expand a key in map. it looks up key, and
looks for atrings like this: {foo}. it expands {foo} by looking up
foo in map, and substituting it. expansion is recursive: it stops
when there is no more {foo} to replace.
expansion also allows formatting and filtering.
format uses key to expand each item in list. syntax is
{key%format}.
filter uses function to transform value. syntax is
{key|filter1|filter2|...}.'''
def __init__(self, mapfile, filters={}, defaults={}, cache={}):
'''set up template engine.
mapfile is name of file to read map definitions from.
filters is dict of functions. each transforms a value into another.
defaults is dict of default map definitions.'''
self.mapfile = mapfile or 'template'
self.cache = cache.copy()
self.map = {}
self.base = (mapfile and os.path.dirname(mapfile)) or ''
self.filters = filters
self.defaults = defaults
if not mapfile:
return
i = 0
for l in file(mapfile):
l = l.strip()
i += 1
if not l or l[0] in '#;': continue
m = re.match(r'([a-zA-Z_][a-zA-Z0-9_]*)\s*=\s*(.+)$', l)
if m:
key, val = m.groups()
if val[0] in "'\"":
try:
self.cache[key] = parsestring(val)
except SyntaxError, inst:
raise SyntaxError('%s:%s: %s' %
(mapfile, i, inst.args[0]))
else:
self.map[key] = os.path.join(self.base, val)
else:
raise SyntaxError(_("%s:%s: parse error") % (mapfile, i))
def __contains__(self, key):
return key in self.cache
def __call__(self, t, **map):
'''perform expansion.
t is name of map element to expand.
map is added elements to use during expansion.'''
m = self.defaults.copy()
m.update(map)
try:
tmpl = self.cache[t]
except KeyError:
try:
tmpl = self.cache[t] = file(self.map[t]).read()
except IOError, inst:
raise IOError(inst.args[0], _('template file %s: %s') %
(self.map[t], inst.args[1]))
return self.template(tmpl, self.filters, **m)
template_re = re.compile(r"[#{]([a-zA-Z_][a-zA-Z0-9_]*)"
r"((%[a-zA-Z_][a-zA-Z0-9_]*)*)"
r"((\|[a-zA-Z_][a-zA-Z0-9_]*)*)[#}]")
def template(self, tmpl, filters={}, **map):
lm = map.copy()
while tmpl:
m = self.template_re.search(tmpl)
if m:
start, end = m.span(0)
s, e = tmpl[start], tmpl[end - 1]
key = m.group(1)
if ((s == '#' and e != '#') or (s == '{' and e != '}')):
raise SyntaxError(_("'%s'/'%s' mismatch expanding '%s'") %
(s, e, key))
if start:
yield tmpl[:start]
v = map.get(key, "")
v = callable(v) and v(**map) or v
format = m.group(2)
fl = m.group(4)
if format:
q = v.__iter__
for i in q():
lm.update(i)
yield self(format[1:], **lm)
v = ""
elif fl:
for f in fl.split("|")[1:]:
v = filters[f](v)
yield v
tmpl = tmpl[end:]
else:
yield tmpl
break
agescales = [("second", 1),
("minute", 60),
("hour", 3600),
("day", 3600 * 24),
("week", 3600 * 24 * 7),
("month", 3600 * 24 * 30),
("year", 3600 * 24 * 365)]
agescales.reverse()
def age(date):
'''turn a (timestamp, tzoff) tuple into an age string.'''
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]
delta = max(1, int(now - then))
for t, s in agescales:
n = delta / s
if n >= 2 or s == 1:
return fmt(t, n)
def stringify(thing):
'''turn nested template iterator into string.'''
cs = cStringIO.StringIO()
def walk(things):
for t in things:
if hasattr(t, '__iter__'):
walk(t)
else:
cs.write(t)
walk(thing)
return cs.getvalue()
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:
w = len(text)
while w > start and text[w-1].isspace(): w -= 1
yield text[start:w], text[w:]
break
yield text[start:m.start(0)], m.group(1)
start = m.end(1)
fp = cStringIO.StringIO()
for para, rest in findparas():
fp.write(space_re.sub(' ', textwrap.fill(para, width)))
fp.write(rest)
return fp.getvalue()
def firstline(text):
'''return the first line of text'''
try:
return text.splitlines(1)[0].rstrip('\r\n')
except IndexError:
return ''
def isodate(date):
'''turn a (timestamp, tzoff) tuple into an iso 8631 date and time.'''
return util.datestr(date, format='%Y-%m-%d %H:%M')
def hgdate(date):
'''turn a (timestamp, tzoff) tuple into an hg cset timestamp.'''
return "%d %d" % date
def nl2br(text):
'''replace raw newlines with xhtml line breaks.'''
return text.replace('\n', '<br/>\n')
def obfuscate(text):
text = unicode(text, 'utf-8', 'replace')
return ''.join(['&#%d;' % ord(c) for c in text])
def domain(author):
'''get domain of author, or empty string if none.'''
f = author.find('@')
if f == -1: return ''
author = author[f+1:]
f = author.find('>')
if f >= 0: author = author[:f]
return author
def email(author):
'''get email of author.'''
r = author.find('>')
if r == -1: r = None
return author[author.find('<')+1:r]
def person(author):
'''get name of author, or else username.'''
f = author.find('<')
if f == -1: return util.shortuser(author)
return author[:f].rstrip()
def shortdate(date):
'''turn (timestamp, tzoff) tuple into iso 8631 date.'''
return util.datestr(date, format='%Y-%m-%d', timezone=False)
def indent(text, prefix):
'''indent each non-empty line of text after first with prefix.'''
fp = cStringIO.StringIO()
lines = text.splitlines()
num_lines = len(lines)
for i in xrange(num_lines):
l = lines[i]
if i and l.strip(): fp.write(prefix)
fp.write(l)
if i < num_lines - 1 or text.endswith('\n'):
fp.write('\n')
return fp.getvalue()
common_filters = {
"addbreaks": nl2br,
"basename": os.path.basename,
"age": age,
"date": lambda x: util.datestr(x),
"domain": domain,
"email": email,
"escape": lambda x: cgi.escape(x, True),
"fill68": lambda x: fill(x, width=68),
"fill76": lambda x: fill(x, width=76),
"firstline": firstline,
"tabindent": lambda x: indent(x, '\t'),
"hgdate": hgdate,
"isodate": isodate,
"obfuscate": obfuscate,
"permissions": lambda x: x and "-rwxr-xr-x" or "-rw-r--r--",
"person": person,
"rfc822date": lambda x: util.datestr(x, "%a, %d %b %Y %H:%M:%S"),
"short": lambda x: x[:12],
"shortdate": shortdate,
"stringify": stringify,
"strip": lambda x: x.strip(),
"urlescape": lambda x: urllib.quote(x),
"user": lambda x: util.shortuser(x),
}
def templatepath(name=None):
'''return location of template file or directory (if no name).
returns None if not found.'''
# executable version (py2exe) doesn't support __file__
if hasattr(sys, 'frozen'):
module = sys.executable
else:
module = __file__
for f in 'templates', '../templates':
fl = f.split('/')
if name: fl.append(name)
p = os.path.join(os.path.dirname(module), *fl)
if (name and os.path.exists(p)) or os.path.isdir(p):
return os.path.normpath(p)
class changeset_templater(object):
'''format changeset information.'''
def __init__(self, ui, repo, mapfile, dest=None):
self.t = templater(mapfile, common_filters,
cache={'parent': '{rev}:{node|short} ',
'manifest': '{rev}:{node|short}'})
self.ui = ui
self.dest = dest
self.repo = repo
def use_template(self, t):
'''set template string to use'''
self.t.cache['changeset'] = t
def write(self, thing, header=False):
'''write expanded template.
uses in-order recursive traverse of iterators.'''
dest = self.dest or self.ui
for t in thing:
if hasattr(t, '__iter__'):
self.write(t, header=header)
elif header:
dest.write_header(t)
else:
dest.write(t)
def write_header(self, thing):
self.write(thing, header=True)
def show(self, rev=0, changenode=None, brinfo=None, changes=None,
**props):
'''show a single changeset or file revision'''
log = self.repo.changelog
if changenode is None:
changenode = log.node(rev)
elif not rev:
rev = log.rev(changenode)
if changes is None:
changes = log.read(changenode)
def showlist(name, values, plural=None, **args):
'''expand set of values.
name is name of key in template map.
values is list of strings or dicts.
plural is plural of name, if not simply name + 's'.
expansion works like this, given name 'foo'.
if values is empty, expand 'no_foos'.
if 'foo' not in template map, return values as a string,
joined by space.
expand 'start_foos'.
for each value, expand 'foo'. if 'last_foo' in template
map, expand it instead of 'foo' for last key.
expand 'end_foos'.
'''
if plural: names = plural
else: names = name + 's'
if not values:
noname = 'no_' + names
if noname in self.t:
yield self.t(noname, **args)
return
if name not in self.t:
if isinstance(values[0], str):
yield ' '.join(values)
else:
for v in values:
yield dict(v, **args)
return
startname = 'start_' + names
if startname in self.t:
yield self.t(startname, **args)
vargs = args.copy()
def one(v, tag=name):
try:
vargs.update(v)
except (AttributeError, ValueError):
try:
for a, b in v:
vargs[a] = b
except ValueError:
vargs[name] = v
return self.t(tag, **vargs)
lastname = 'last_' + name
if lastname in self.t:
last = values.pop()
else:
last = None
for v in values:
yield one(v)
if last is not None:
yield one(last, tag=lastname)
endname = 'end_' + names
if endname in self.t:
yield self.t(endname, **args)
if brinfo:
def showbranches(**args):
if changenode in brinfo:
for x in showlist('branch', brinfo[changenode],
plural='branches', **args):
yield x
else:
showbranches = ''
if self.ui.debugflag:
def showmanifest(**args):
args = args.copy()
args.update(dict(rev=self.repo.manifest.rev(changes[0]),
node=hex(changes[0])))
yield self.t('manifest', **args)
else:
showmanifest = ''
def showparents(**args):
parents = [[('rev', log.rev(p)), ('node', hex(p))]
for p in log.parents(changenode)
if self.ui.debugflag or p != nullid]
if (not self.ui.debugflag and len(parents) == 1 and
parents[0][0][1] == rev - 1):
return
for x in showlist('parent', parents, **args):
yield x
def showtags(**args):
for x in showlist('tag', self.repo.nodetags(changenode), **args):
yield x
if self.ui.debugflag:
files = self.repo.status(log.parents(changenode)[0], changenode)[:3]
def showfiles(**args):
for x in showlist('file', files[0], **args): yield x
def showadds(**args):
for x in showlist('file_add', files[1], **args): yield x
def showdels(**args):
for x in showlist('file_del', files[2], **args): yield x
else:
def showfiles(**args):
for x in showlist('file', changes[3], **args): yield x
showadds = ''
showdels = ''
defprops = {
'author': changes[1],
'branches': showbranches,
'date': changes[2],
'desc': changes[4],
'file_adds': showadds,
'file_dels': showdels,
'files': showfiles,
'manifest': showmanifest,
'node': hex(changenode),
'parents': showparents,
'rev': rev,
'tags': showtags,
}
props = props.copy()
props.update(defprops)
try:
if self.ui.debugflag and 'header_debug' in self.t:
key = 'header_debug'
elif self.ui.quiet and 'header_quiet' in self.t:
key = 'header_quiet'
elif self.ui.verbose and 'header_verbose' in self.t:
key = 'header_verbose'
elif 'header' in self.t:
key = 'header'
else:
key = ''
if key:
self.write_header(self.t(key, **props))
if self.ui.debugflag and 'changeset_debug' in self.t:
key = 'changeset_debug'
elif self.ui.quiet and 'changeset_quiet' in self.t:
key = 'changeset_quiet'
elif self.ui.verbose and 'changeset_verbose' in self.t:
key = 'changeset_verbose'
else:
key = 'changeset'
self.write(self.t(key, **props))
except KeyError, inst:
raise util.Abort(_("%s: no key named '%s'") % (self.t.mapfile,
inst.args[0]))
except SyntaxError, inst:
raise util.Abort(_('%s: %s') % (self.t.mapfile, inst.args[0]))
class stringio(object):
'''wrap cStringIO for use by changeset_templater.'''
def __init__(self):
self.fp = cStringIO.StringIO()
def write(self, *args):
for a in args:
self.fp.write(a)
write_header = write
def __getattr__(self, key):
return getattr(self.fp, key)