mercurial/templater.py
author Matt Mackall <mpm@selenic.com>
Mon, 24 Sep 2012 15:26:56 -0500
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parent 17635 8804e3cb51bd
child 17637 02d2166ef5f1
permissions -rw-r--r--
templater: add if/ifeq conditionals
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# templater.py - template expansion for output
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#
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from i18n import _
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import sys, os, re
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import util, config, templatefilters, parser, error
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# template parsing
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elements = {
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    "(": (20, ("group", 1, ")"), ("func", 1, ")")),
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    ",": (2, None, ("list", 2)),
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    "|": (5, None, ("|", 5)),
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    "%": (6, None, ("%", 6)),
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    ")": (0, None, None),
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    "symbol": (0, ("symbol",), None),
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    "string": (0, ("string",), None),
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    "end": (0, None, None),
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}
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def tokenizer(data):
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    program, start, end = data
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    pos = start
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    while pos < end:
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        c = program[pos]
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        if c.isspace(): # skip inter-token whitespace
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            pass
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        elif c in "(,)%|": # handle simple operators
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            yield (c, None, pos)
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        elif (c in '"\'' or c == 'r' and
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              program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings
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            if c == 'r':
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                pos += 1
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                c = program[pos]
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                decode = False
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            else:
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                decode = True
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            pos += 1
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            s = pos
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            while pos < end: # find closing quote
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                d = program[pos]
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                if decode and d == '\\': # skip over escaped characters
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                    pos += 2
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                    continue
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                if d == c:
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                    if not decode:
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                        yield ('string', program[s:pos].replace('\\', r'\\'), s)
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                        break
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                    yield ('string', program[s:pos].decode('string-escape'), s)
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                    break
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                pos += 1
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            else:
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                raise error.ParseError(_("unterminated string"), s)
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        elif c.isalnum() or c in '_':
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            s = pos
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            pos += 1
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            while pos < end: # find end of symbol
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                d = program[pos]
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                if not (d.isalnum() or d == "_"):
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                    break
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                pos += 1
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            sym = program[s:pos]
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            yield ('symbol', sym, s)
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            pos -= 1
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        elif c == '}':
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            pos += 1
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            break
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        else:
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            raise error.ParseError(_("syntax error"), pos)
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        pos += 1
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    yield ('end', None, pos)
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def compiletemplate(tmpl, context):
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    parsed = []
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    pos, stop = 0, len(tmpl)
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    p = parser.parser(tokenizer, elements)
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    while pos < stop:
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        n = tmpl.find('{', pos)
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        if n < 0:
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            parsed.append(("string", tmpl[pos:]))
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            break
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        if n > 0 and tmpl[n - 1] == '\\':
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            # escaped
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            parsed.append(("string", tmpl[pos:n - 1] + "{"))
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            pos = n + 1
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            continue
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        if n > pos:
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            parsed.append(("string", tmpl[pos:n]))
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        pd = [tmpl, n + 1, stop]
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        parseres, pos = p.parse(pd)
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        parsed.append(parseres)
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    return [compileexp(e, context) for e in parsed]
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def compileexp(exp, context):
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    t = exp[0]
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    if t in methods:
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        return methods[t](exp, context)
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    raise error.ParseError(_("unknown method '%s'") % t)
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# template evaluation
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def getsymbol(exp):
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    if exp[0] == 'symbol':
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        return exp[1]
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    raise error.ParseError(_("expected a symbol"))
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def getlist(x):
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    if not x:
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        return []
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    if x[0] == 'list':
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        return getlist(x[1]) + [x[2]]
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    return [x]
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def getfilter(exp, context):
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    f = getsymbol(exp)
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    if f not in context._filters:
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        raise error.ParseError(_("unknown function '%s'") % f)
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    return context._filters[f]
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def gettemplate(exp, context):
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    if exp[0] == 'string':
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        return compiletemplate(exp[1], context)
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    if exp[0] == 'symbol':
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        return context._load(exp[1])
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    raise error.ParseError(_("expected template specifier"))
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def runstring(context, mapping, data):
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    return data
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def runsymbol(context, mapping, key):
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    v = mapping.get(key)
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    if v is None:
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        v = context._defaults.get(key, '')
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    if util.safehasattr(v, '__call__'):
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        return v(**mapping)
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    return v
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def buildfilter(exp, context):
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    func, data = compileexp(exp[1], context)
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    filt = getfilter(exp[2], context)
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    return (runfilter, (func, data, filt))
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def runfilter(context, mapping, data):
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    func, data, filt = data
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    try:
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        return filt(func(context, mapping, data))
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    except (ValueError, AttributeError, TypeError):
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        if isinstance(data, tuple):
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            dt = data[1]
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        else:
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            dt = data
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        raise util.Abort(_("template filter '%s' is not compatible with "
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                           "keyword '%s'") % (filt.func_name, dt))
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def buildmap(exp, context):
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    func, data = compileexp(exp[1], context)
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    ctmpl = gettemplate(exp[2], context)
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    return (runmap, (func, data, ctmpl))
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   166
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def runtemplate(context, mapping, template):
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    for func, data in template:
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        yield func(context, mapping, data)
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def runmap(context, mapping, data):
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    func, data, ctmpl = data
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    d = func(context, mapping, data)
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    if util.safehasattr(d, '__call__'):
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        d = d()
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    lm = mapping.copy()
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    for i in d:
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        if isinstance(i, dict):
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            lm.update(i)
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            yield runtemplate(context, lm, ctmpl)
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        else:
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            # v is not an iterable of dicts, this happen when 'key'
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            # has been fully expanded already and format is useless.
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            # If so, return the expanded value.
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            yield i
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def buildfunc(exp, context):
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    n = getsymbol(exp[1])
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    args = [compileexp(x, context) for x in getlist(exp[2])]
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    if n in funcs:
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   193
        f = funcs[n]
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        return (f, args)
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    if n in context._filters:
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   196
        if len(args) != 1:
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   197
            raise error.ParseError(_("filter %s expects one argument") % n)
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        f = context._filters[n]
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   199
        return (runfilter, (args[0][0], args[0][1], f))
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def join(context, mapping, args):
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   202
    if not (1 <= len(args) <= 2):
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   203
        raise error.ParseError(_("join expects one or two arguments"))
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    joinset = args[0][0](context, mapping, args[0][1])
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    if util.safehasattr(joinset, '__call__'):
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   207
        joinset = [x.values()[0] for x in joinset()]
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   209
    joiner = " "
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    if len(args) > 1:
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   211
        joiner = args[1][0](context, mapping, args[1][1])
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   212
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   213
    first = True
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   214
    for x in joinset:
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   215
        if first:
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   216
            first = False
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   217
        else:
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            yield joiner
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        yield x
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   220
17635
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   221
def sub(context, mapping, args):
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   222
    if len(args) != 3:
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   223
        raise error.ParseError(_("sub expects three arguments"))
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   224
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    pat = stringify(args[0][0](context, mapping, args[0][1]))
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    rpl = stringify(args[1][0](context, mapping, args[1][1]))
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    src = stringify(args[2][0](context, mapping, args[2][1]))
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    yield re.sub(pat, rpl, src)
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def if_(context, mapping, args):
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   231
    if not (2 <= len(args) <= 3):
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        raise error.ParseError(_("if expects two or three arguments"))
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   233
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    test = stringify(args[0][0](context, mapping, args[0][1]))
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   235
    if test:
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   236
        t = stringify(args[1][0](context, mapping, args[1][1]))
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        yield runtemplate(context, mapping, compiletemplate(t, context))
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   238
    elif len(args) == 3:
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        t = stringify(args[2][0](context, mapping, args[2][1]))
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        yield runtemplate(context, mapping, compiletemplate(t, context))
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   241
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def ifeq(context, mapping, args):
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   243
    if not (3 <= len(args) <= 4):
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   244
        raise error.ParseError(_("ifeq expects three or four arguments"))
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   245
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   246
    test = stringify(args[0][0](context, mapping, args[0][1]))
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   247
    match = stringify(args[1][0](context, mapping, args[1][1]))
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   248
    if test == match:
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   249
        t = stringify(args[2][0](context, mapping, args[2][1]))
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   250
        yield runtemplate(context, mapping, compiletemplate(t, context))
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   251
    elif len(args) == 4:
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        t = stringify(args[3][0](context, mapping, args[3][1]))
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        yield runtemplate(context, mapping, compiletemplate(t, context))
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methods = {
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    "string": lambda e, c: (runstring, e[1]),
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    "symbol": lambda e, c: (runsymbol, e[1]),
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    "group": lambda e, c: compileexp(e[1], c),
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   259
#    ".": buildmember,
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    "|": buildfilter,
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   261
    "%": buildmap,
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   262
    "func": buildfunc,
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   263
    }
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   264
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funcs = {
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    "if": if_,
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    "ifeq": ifeq,
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    "join": join,
17635
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    "sub": sub,
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}
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# template engine
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   273
7107
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path = ['templates', '../templates']
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stringify = templatefilters.stringify
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def _flatten(thing):
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    '''yield a single stream from a possibly nested set of iterators'''
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    if isinstance(thing, str):
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        yield thing
14944
e2c413bde8a5 globally: use safehasattr(x, '__iter__') instead of hasattr(x, '__iter__')
Augie Fackler <durin42@gmail.com>
parents: 14943
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    elif not util.safehasattr(thing, '__iter__'):
11305
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        if thing is not None:
10852
0d50586a9d31 templater: raise nested functions
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parents: 10850
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   283
            yield str(thing)
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   284
    else:
10850
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   285
        for i in thing:
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   286
            if isinstance(i, str):
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                yield i
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e2c413bde8a5 globally: use safehasattr(x, '__iter__') instead of hasattr(x, '__iter__')
Augie Fackler <durin42@gmail.com>
parents: 14943
diff changeset
   288
            elif not util.safehasattr(i, '__iter__'):
10852
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parents: 10850
diff changeset
   289
                if i is not None:
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parents: 10850
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   290
                    yield str(i)
10850
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parents: 10849
diff changeset
   291
            elif i is not None:
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   292
                for j in _flatten(i):
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   293
                    yield j
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   294
1902
1cc5f25653a3 make parsestring work with strings that do not have quotes.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1901
diff changeset
   295
def parsestring(s, quoted=True):
1909
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   296
    '''parse a string using simple c-like syntax.
37b9f80a5fbb add doc comments to template code.
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   297
    string must be in quotes if quoted is True.'''
1902
1cc5f25653a3 make parsestring work with strings that do not have quotes.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1901
diff changeset
   298
    if quoted:
3639
5c9a36210662 templater: simplify parsestring
Matt Mackall <mpm@selenic.com>
parents: 3638
diff changeset
   299
        if len(s) < 2 or s[0] != s[-1]:
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parents: 3638
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   300
            raise SyntaxError(_('unmatched quotes'))
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parents: 3638
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   301
        return s[1:-1].decode('string_escape')
3632
231393b7316f templater: use str.decode in parse_string
Matt Mackall <mpm@selenic.com>
parents: 3462
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   302
231393b7316f templater: use str.decode in parse_string
Matt Mackall <mpm@selenic.com>
parents: 3462
diff changeset
   303
    return s.decode('string_escape')
1896
f8f818a04f5b move hgweb template code out to templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   304
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   305
class engine(object):
1909
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parents: 1906
diff changeset
   306
    '''template expansion engine.
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parents: 1906
diff changeset
   307
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parents: 1906
diff changeset
   308
    template expansion works like this. a map file contains key=value
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   309
    pairs. if value is quoted, it is treated as string. otherwise, it
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   310
    is treated as name of template file.
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parents: 1906
diff changeset
   311
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parents: 1906
diff changeset
   312
    templater is asked to expand a key in map. it looks up key, and
4334
66a3fe30f9fc minor typo fix in templater's docstring
TK Soh <teekaysoh@yahoo.com>
parents: 3904
diff changeset
   313
    looks for strings like this: {foo}. it expands {foo} by looking up
1909
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   314
    foo in map, and substituting it. expansion is recursive: it stops
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   315
    when there is no more {foo} to replace.
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   316
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parents: 1906
diff changeset
   317
    expansion also allows formatting and filtering.
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   318
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   319
    format uses key to expand each item in list. syntax is
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   320
    {key%format}.
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   321
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parents: 1906
diff changeset
   322
    filter uses function to transform value. syntax is
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   323
    {key|filter1|filter2|...}.'''
37b9f80a5fbb add doc comments to template code.
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parents: 1906
diff changeset
   324
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diff changeset
   325
    def __init__(self, loader, filters={}, defaults={}):
10848
01346cea5485 templater: privatize class variables
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parents: 10847
diff changeset
   326
        self._loader = loader
01346cea5485 templater: privatize class variables
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diff changeset
   327
        self._filters = filters
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parents: 10847
diff changeset
   328
        self._defaults = defaults
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parents: 10847
diff changeset
   329
        self._cache = {}
8218
e61cb2813d2a templater: separate template management and actual string processing
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parents: 8198
diff changeset
   330
13176
895f54a79c6e templater: use the parser.py parser to extend the templater syntax
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parents: 13175
diff changeset
   331
    def _load(self, t):
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parents: 13175
diff changeset
   332
        '''load, parse, and cache a template'''
895f54a79c6e templater: use the parser.py parser to extend the templater syntax
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parents: 13175
diff changeset
   333
        if t not in self._cache:
895f54a79c6e templater: use the parser.py parser to extend the templater syntax
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parents: 13175
diff changeset
   334
            self._cache[t] = compiletemplate(self._loader(t), self)
895f54a79c6e templater: use the parser.py parser to extend the templater syntax
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parents: 13175
diff changeset
   335
        return self._cache[t]
895f54a79c6e templater: use the parser.py parser to extend the templater syntax
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parents: 13175
diff changeset
   336
10853
b6f6d9fd53d6 templater: drop raw method
Matt Mackall <mpm@selenic.com>
parents: 10852
diff changeset
   337
    def process(self, t, mapping):
b6f6d9fd53d6 templater: drop raw method
Matt Mackall <mpm@selenic.com>
parents: 10852
diff changeset
   338
        '''Perform expansion. t is name of map element to expand.
b6f6d9fd53d6 templater: drop raw method
Matt Mackall <mpm@selenic.com>
parents: 10852
diff changeset
   339
        mapping contains added elements for use during expansion. Is a
b6f6d9fd53d6 templater: drop raw method
Matt Mackall <mpm@selenic.com>
parents: 10852
diff changeset
   340
        generator.'''
13176
895f54a79c6e templater: use the parser.py parser to extend the templater syntax
Matt Mackall <mpm@selenic.com>
parents: 13175
diff changeset
   341
        return _flatten(func(self, mapping, data) for func, data in
895f54a79c6e templater: use the parser.py parser to extend the templater syntax
Matt Mackall <mpm@selenic.com>
parents: 13175
diff changeset
   342
                         self._load(t))
17632
523625e46760 templater: factor out runtemplate method
Matt Mackall <mpm@selenic.com>
parents: 17631
diff changeset
   343
        return _flatten(runtemplate(self, mapping, self._load(t)))
8218
e61cb2813d2a templater: separate template management and actual string processing
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8198
diff changeset
   344
8361
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   345
engines = {'default': engine}
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   346
8218
e61cb2813d2a templater: separate template management and actual string processing
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parents: 8198
diff changeset
   347
class templater(object):
e61cb2813d2a templater: separate template management and actual string processing
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parents: 8198
diff changeset
   348
7396
526c40a74bd0 templater: return data in increasing chunk sizes
Brendan Cully <brendan@kublai.com>
parents: 7107
diff changeset
   349
    def __init__(self, mapfile, filters={}, defaults={}, cache={},
526c40a74bd0 templater: return data in increasing chunk sizes
Brendan Cully <brendan@kublai.com>
parents: 7107
diff changeset
   350
                 minchunk=1024, maxchunk=65536):
1909
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   351
        '''set up template engine.
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   352
        mapfile is name of file to read map definitions from.
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   353
        filters is dict of functions. each transforms a value into another.
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   354
        defaults is dict of default map definitions.'''
1905
0c760737b996 improve template errors when something is wrong.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1904
diff changeset
   355
        self.mapfile = mapfile or 'template'
1975
6e1a8ea5d717 Duplicate cache when creating templater.
Shun-ichi Goto <shunichi.goto@gmail.com>
parents: 1964
diff changeset
   356
        self.cache = cache.copy()
1896
f8f818a04f5b move hgweb template code out to templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   357
        self.map = {}
1905
0c760737b996 improve template errors when something is wrong.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1904
diff changeset
   358
        self.base = (mapfile and os.path.dirname(mapfile)) or ''
8360
acc202b71619 templater: provide the standard template filters by default
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8312
diff changeset
   359
        self.filters = templatefilters.filters.copy()
acc202b71619 templater: provide the standard template filters by default
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8312
diff changeset
   360
        self.filters.update(filters)
1964
778281d46bb2 fix template bug that made hgweb break.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1955
diff changeset
   361
        self.defaults = defaults
7396
526c40a74bd0 templater: return data in increasing chunk sizes
Brendan Cully <brendan@kublai.com>
parents: 7107
diff changeset
   362
        self.minchunk, self.maxchunk = minchunk, maxchunk
13187
e3b87fb34d00 templater: clarify engine caching
Matt Mackall <mpm@selenic.com>
parents: 13176
diff changeset
   363
        self.ecache = {}
1896
f8f818a04f5b move hgweb template code out to templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   364
1905
0c760737b996 improve template errors when something is wrong.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1904
diff changeset
   365
        if not mapfile:
0c760737b996 improve template errors when something is wrong.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1904
diff changeset
   366
            return
6337
d2713d902524 give better error message on non-existent mapfile (issue813)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 5976
diff changeset
   367
        if not os.path.exists(mapfile):
d2713d902524 give better error message on non-existent mapfile (issue813)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 5976
diff changeset
   368
            raise util.Abort(_('style not found: %s') % mapfile)
d2713d902524 give better error message on non-existent mapfile (issue813)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 5976
diff changeset
   369
8194
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   370
        conf = config.config()
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   371
        conf.read(mapfile)
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   372
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   373
        for key, val in conf[''].items():
17334
39c01f8e7b39 templater: handle a missing value correctly
Ross Lagerwall <rosslagerwall@gmail.com>
parents: 16686
diff changeset
   374
            if not val:
39c01f8e7b39 templater: handle a missing value correctly
Ross Lagerwall <rosslagerwall@gmail.com>
parents: 16686
diff changeset
   375
                raise SyntaxError(_('%s: missing value') % conf.source('', key))
8194
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   376
            if val[0] in "'\"":
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   377
                try:
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   378
                    self.cache[key] = parsestring(val)
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   379
                except SyntaxError, inst:
63c47e4ac617 templater: use new config parser
Matt Mackall <mpm@selenic.com>
parents: 8015
diff changeset
   380
                    raise SyntaxError('%s: %s' %
8198
cf9accffd0b3 config: getsource -> source
Matt Mackall <mpm@selenic.com>
parents: 8194
diff changeset
   381
                                      (conf.source('', key), inst.args[0]))
1896
f8f818a04f5b move hgweb template code out to templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   382
            else:
8361
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   383
                val = 'default', val
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   384
                if ':' in val[1]:
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   385
                    val = val[1].split(':', 1)
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   386
                self.map[key] = val[0], os.path.join(self.base, val[1])
1896
f8f818a04f5b move hgweb template code out to templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   387
1899
888d298ddb91 many small changes to templater.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1897
diff changeset
   388
    def __contains__(self, key):
3637
e7639888bb2f templater: simplify cache and remove filter argument in __call__
Matt Mackall <mpm@selenic.com>
parents: 3636
diff changeset
   389
        return key in self.cache or key in self.map
1899
888d298ddb91 many small changes to templater.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1897
diff changeset
   390
8218
e61cb2813d2a templater: separate template management and actual string processing
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8198
diff changeset
   391
    def load(self, t):
6783
6d824dc86907 templater: make a template a string-only iterator
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 6434
diff changeset
   392
        '''Get the template for the given template name. Use a local cache.'''
16686
67964cda8701 cleanup: "not x in y" -> "x not in y"
Brodie Rao <brodie@sf.io>
parents: 14944
diff changeset
   393
        if t not in self.cache:
1905
0c760737b996 improve template errors when something is wrong.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1904
diff changeset
   394
            try:
14168
135e244776f0 prevent transient leaks of file handle by using new helper functions
Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13665
diff changeset
   395
                self.cache[t] = util.readfile(self.map[t][1])
13175
09cde75e0613 templater: give slightly nicer error for unknown map entries
Matt Mackall <mpm@selenic.com>
parents: 13020
diff changeset
   396
            except KeyError, inst:
09cde75e0613 templater: give slightly nicer error for unknown map entries
Matt Mackall <mpm@selenic.com>
parents: 13020
diff changeset
   397
                raise util.Abort(_('"%s" not in template map') % inst.args[0])
1905
0c760737b996 improve template errors when something is wrong.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1904
diff changeset
   398
            except IOError, inst:
0c760737b996 improve template errors when something is wrong.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1904
diff changeset
   399
                raise IOError(inst.args[0], _('template file %s: %s') %
8361
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   400
                              (self.map[t][1], inst.args[1]))
6783
6d824dc86907 templater: make a template a string-only iterator
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 6434
diff changeset
   401
        return self.cache[t]
1896
f8f818a04f5b move hgweb template code out to templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
   402
10847
90f4367535a5 templater: map -> mapping
Matt Mackall <mpm@selenic.com>
parents: 10846
diff changeset
   403
    def __call__(self, t, **mapping):
8361
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   404
        ttype = t in self.map and self.map[t][0] or 'default'
13187
e3b87fb34d00 templater: clarify engine caching
Matt Mackall <mpm@selenic.com>
parents: 13176
diff changeset
   405
        if ttype not in self.ecache:
e3b87fb34d00 templater: clarify engine caching
Matt Mackall <mpm@selenic.com>
parents: 13176
diff changeset
   406
            self.ecache[ttype] = engines[ttype](self.load,
e3b87fb34d00 templater: clarify engine caching
Matt Mackall <mpm@selenic.com>
parents: 13176
diff changeset
   407
                                                 self.filters, self.defaults)
e3b87fb34d00 templater: clarify engine caching
Matt Mackall <mpm@selenic.com>
parents: 13176
diff changeset
   408
        proc = self.ecache[ttype]
8361
d8c5a7f25a40 templater: make the templating engine pluggable to some extent
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8360
diff changeset
   409
10847
90f4367535a5 templater: map -> mapping
Matt Mackall <mpm@selenic.com>
parents: 10846
diff changeset
   410
        stream = proc.process(t, mapping)
7396
526c40a74bd0 templater: return data in increasing chunk sizes
Brendan Cully <brendan@kublai.com>
parents: 7107
diff changeset
   411
        if self.minchunk:
526c40a74bd0 templater: return data in increasing chunk sizes
Brendan Cully <brendan@kublai.com>
parents: 7107
diff changeset
   412
            stream = util.increasingchunks(stream, min=self.minchunk,
526c40a74bd0 templater: return data in increasing chunk sizes
Brendan Cully <brendan@kublai.com>
parents: 7107
diff changeset
   413
                                           max=self.maxchunk)
526c40a74bd0 templater: return data in increasing chunk sizes
Brendan Cully <brendan@kublai.com>
parents: 7107
diff changeset
   414
        return stream
7434
cf7741aa1e96 kill some trailing spaces
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7396
diff changeset
   415
1899
888d298ddb91 many small changes to templater.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1897
diff changeset
   416
def templatepath(name=None):
1909
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   417
    '''return location of template file or directory (if no name).
37b9f80a5fbb add doc comments to template code.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1906
diff changeset
   418
    returns None if not found.'''
7107
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   419
    normpaths = []
2189
e3eba577a0ae move changeset_templater into templater module.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2001
diff changeset
   420
2001
a439b7b51530 Windows py2exe version didn't handle names given to templatepath() correctly
Lee Cantey <lcantey@gmail.com>
parents: 1987
diff changeset
   421
    # executable version (py2exe) doesn't support __file__
14941
4a28cb4df1f8 windows: check util.mainfrozen() instead of ad-hoc checks everywhere
Augie Fackler <durin42@gmail.com>
parents: 14925
diff changeset
   422
    if util.mainfrozen():
2001
a439b7b51530 Windows py2exe version didn't handle names given to templatepath() correctly
Lee Cantey <lcantey@gmail.com>
parents: 1987
diff changeset
   423
        module = sys.executable
a439b7b51530 Windows py2exe version didn't handle names given to templatepath() correctly
Lee Cantey <lcantey@gmail.com>
parents: 1987
diff changeset
   424
    else:
a439b7b51530 Windows py2exe version didn't handle names given to templatepath() correctly
Lee Cantey <lcantey@gmail.com>
parents: 1987
diff changeset
   425
        module = __file__
7107
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   426
    for f in path:
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   427
        if f.startswith('/'):
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   428
            p = f
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   429
        else:
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   430
            fl = f.split('/')
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   431
            p = os.path.join(os.path.dirname(module), *fl)
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   432
        if name:
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   433
            p = os.path.join(p, name)
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   434
        if name and os.path.exists(p):
1897
58b6784cf9f1 move hgweb.templatepath into templater
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 1896
diff changeset
   435
            return os.path.normpath(p)
7107
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   436
        elif os.path.isdir(p):
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   437
            normpaths.append(os.path.normpath(p))
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   438
125c8fedcbe0 Allow hgweb to search for templates in more than one path.
Brendan Cully <brendan@kublai.com>
parents: 6783
diff changeset
   439
    return normpaths
2189
e3eba577a0ae move changeset_templater into templater module.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2001
diff changeset
   440
9842
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   441
def stylemap(styles, paths=None):
7966
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   442
    """Return path to mapfile for a given style.
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   443
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   444
    Searches mapfile in the following locations:
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   445
    1. templatepath/style/map
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   446
    2. templatepath/map-style
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   447
    3. templatepath/map
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   448
    """
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   449
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   450
    if paths is None:
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   451
        paths = templatepath()
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   452
    elif isinstance(paths, str):
8223
02145b700fe4 templater: fix little problem from stylemap() changes
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 8218
diff changeset
   453
        paths = [paths]
7966
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   454
9842
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   455
    if isinstance(styles, str):
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   456
        styles = [styles]
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   457
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   458
    for style in styles:
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   459
        if not style:
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   460
            continue
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   461
        locations = [os.path.join(style, 'map'), 'map-' + style]
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   462
        locations.append('map')
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   463
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   464
        for path in paths:
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   465
            for location in locations:
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   466
                mapfile = os.path.join(path, location)
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   467
                if os.path.isfile(mapfile):
d3dbdca92458 hgweb: don't choke when an inexistent style is requested (issue1901)
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 9372
diff changeset
   468
                    return style, mapfile
7966
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   469
aa983c3d94a9 templater: move stylemap function from hgweb to templater
Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 7434
diff changeset
   470
    raise RuntimeError("No hgweb templates found in %r" % paths)