class Engine(object):
optparser = OptionParser(version=__version__)
optparser.add_option('-i', '--filename',
help='file to render',
dest='filename')
optparser.add_option('-d', '--debug',
help='display debugging information',
action='store_true',
dest='debug',
default=False)
optparser.add_option('-w', '--attr_wrapper',
help='attribute wrapper character',
type='choice',
choices=['"',"'"],
dest='attr_wrapper',
default='"')
optparser.add_option('-f', '--format',
help='(html5|html4|xhtml)',
type='choice',
choices=['html5', 'html4', 'xhtml'],
default='html5',
dest='format')
optparser.add_option('-e', '--escape_html',
help='sanitize values by default',
action='store_true',
dest='escape_html',
default=True)
optparser.add_option('-b', '--batch',
help='batch compile haml files',
action='store_true',
dest='batch',
default=False)
optparser.add_option('-s', '--suppress_eval',
help='suppress script evaluation',
action='store_true',
dest='suppress_eval',
default=False)
optparser.add_option('-p', '--preserve',
help='preserve whitespace tags',
action='append',
type='str',
dest='preserve',
default=['pre', 'textarea'])
optparser.add_option('-a', '--autoclose',
help='autoclose tags',
action='append',
type='str',
dest='autoclose',
default=[
'meta',
'img',
'input',
'link',
'br',
'hr',
'area',
'param',
'col',
'base',
])
optparser.add_option('-x', '--fail_fast',
help='Raise an exception immediately on Lex or Parse error.',
action='store_true',
dest='fail_fast',
default=False)
def __init__(self):
self._cache = Cache()
self.haml_line_cache = {}
self.parser = yacc.yacc(
module=parser,
write_tables=0,
debug=0)
self.lexer = lex.lex(module=lexer)
def reset(self):
self.depth = 0
self.html = StringIO()
self.trim_next = False
self.globals = { '_haml': self }
def setops(self, *args, **kwargs):
"""
Sets options for the Haml engine. Options should be given as keyword arguments.
"""
(self.op, _) = Engine.optparser.parse_args([])
for (k,v) in kwargs.items():
opt = Engine.optparser.get_option('--' + k)
if opt:
self.op.__dict__[k] = opt.check_value(k,v)
def _modulename(self, path):
"""ensure no . characters exist in path, as these have meaning in g3"""
return path.replace(".", "-dot-")
def find_module(self, fullname):
if not fullname.startswith("//"):
dir = os.path.dirname(self.op.filename)
else:
dir = os.curdir
fullname = fullname[2:]
path = os.path.join(dir, '%s.haml' % fullname)
if os.path.exists(path):
return Loader(self, path)
raise ImportError, "could not find file at path %s" % path
def load_module(self, fullname, path, loader):
code = self.cache(path)
fullname = self._modulename(fullname)
mod = imp.new_module(fullname)
mod = sys.modules.setdefault(fullname, mod)
mod.__file__ = path
mod.__loader__ = loader
mod.__dict__.update(self.globals)
ex(code, mod.__dict__)
return mod
def imp(self, fullname):
finder = Finder(self)
loader = finder.find_module(fullname)
if loader:
return loader.load_module(fullname)
return None
def entab(self):
self.depth += 1
def detab(self):
self.depth -= 1
def trim(self):
self.trim_next = True
def indent(self, indent):
if not self.trim_next:
self.write('\n')
if indent:
self.write(' ' * self.depth)
self.trim_next = False
def write(self, *args):
for arg in args:
arg = arg.encode("ascii", "xmlcharrefreplace")
self.html.write(arg)
def escape(self, string):
return cgi.escape(string, True)
def preserve_whitespace(self, string):
return string.replace('\n', '
')
def attrs(self, id, klass, a):
a = dict((k,v) for k,v in a.items() if v != None)
if id:
a['id'] = id + '_' + a.get('id','') if 'id' in a else id
if klass:
a['class'] = (klass + ' ' + a.get('class','')).strip()
w = self.op.attr_wrapper
for k,v in a.items():
if v is None or v is False: continue
if v is True: v = k # for things like checked=checked
v = unicode(v).replace(w, {'"':'"', "'":'''}[w])
self.write(' %s=%s%s%s' % (k,w,v,w))
def compile(self, s, filename="<string>"):
"""
Compile a HAML string, returning a Python code object that can be exec'd.
Optional filename parameter specifies the name of the file containing the HAML
code, which helps give better error messages.
"""
self.parser.__dict__.update({
'depth': 0,
'src': [],
'last_obj': None,
'debug': self.op.debug,
'op': self.op,
'to_close': [],
'preserve': 0,
'lineno': 1,
})
self.lexer.begin('INITIAL')
self.lexer.__dict__.update({
'depth': 0,
'type': None,
'length': None,
'block': None,
'lineno': 1,
})
try:
self.parser.parse(s, lexer=self.lexer, debug=self.op.debug, tracking=True)
except HamlParserException, ex:
lineno, haml_line, msg = ex
if type(haml_line) == int:
#interpret haml_line as character position to get the line
haml_line = get_lines_in_position_range(self.lexer.lexdata,
haml_line, haml_line)
raise HamlException, "Parse error in file %r: %s at line %d:\n%s\n%s" % \
(filename, msg, lineno, haml_line, traceback.format_exc())
#add a line too the beginning of the Python source indicating which
#Haml file this is. This can be accessed later for getting descriptive
#error messages.
lines = ["HAML_file_name = %r" % filename]
#haml_lines maps Python lines to Haml (line number, code) pairs.
haml_lines = [(0, "<no line 0>"), (0, "<HAML setup>")]
for call in self.parser.src:
line = str(call)
lines.append(line)
haml_line = call.haml.posinfo
#append once for every Python line this Haml call turned into
for i in range(1 + line.count('\n')):
haml_lines.append(haml_line)
self.haml_line_cache[filename] = haml_lines
src = '\n'.join(lines) + '\n'
try:
#important for file to be "<haml>" so execute() can detect Haml
#code in tracebacks
return code.compile_command(src, "<haml>", "exec")
except SyntaxError:
exc_type, exc_value, exc_traceback = sys.exc_info()
haml_line_number, haml_line = self.get_haml_line_info(filename,
exc_value.lineno, exc_value.text)
#change the syntax error message to show the Haml code
message = traceback.format_exception_only(exc_type, exc_value)
#message[0] was originally 'File "<pythonfile>", line <pythonline>'
message[0] = ' File "%s", line %d\n' % (filename, haml_line_number)
#message[1] was originally the python line with the syntax error
message[1] = ' %s\n Python:\n%s' % (haml_line, message[1])
raise HamlException, ''.join(message)
class Engine(object):
optparser = OptionParser(version=__version__)
optparser.add_option('-i',
'--filename',
help='file to render',
dest='filename')
optparser.add_option('-d',
'--debug',
help='display debugging information',
action='store_true',
dest='debug',
default=False)
optparser.add_option('-w',
'--attr_wrapper',
help='attribute wrapper character',
type='choice',
choices=['"', "'"],
dest='attr_wrapper',
default='"')
optparser.add_option('-f',
'--format',
help='(html5|html4|xhtml)',
type='choice',
choices=['html5', 'html4', 'xhtml'],
default='html5',
dest='format')
optparser.add_option('-e',
'--escape_html',
help='sanitize values by default',
action='store_true',
dest='escape_html',
default=True)
optparser.add_option('-b',
'--batch',
help='batch compile haml files',
action='store_true',
dest='batch',
default=False)
optparser.add_option('-s',
'--suppress_eval',
help='suppress script evaluation',
action='store_true',
dest='suppress_eval',
default=False)
optparser.add_option('-p',
'--preserve',
help='preserve whitespace tags',
action='append',
type='str',
dest='preserve',
default=['pre', 'textarea'])
optparser.add_option('-a',
'--autoclose',
help='autoclose tags',
action='append',
type='str',
dest='autoclose',
default=[
'meta',
'img',
'input',
'link',
'br',
'hr',
'area',
'param',
'col',
'base',
])
optparser.add_option(
'-x',
'--fail_fast',
help='Raise an exception immediately on Lex or Parse error.',
action='store_true',
dest='fail_fast',
default=False)
def __init__(self):
self._cache = Cache()
self.haml_line_cache = {}
self.parser = yacc.yacc(module=parser, write_tables=0, debug=0)
self.lexer = lex.lex(module=lexer)
def reset(self):
self.depth = 0
self.html = StringIO()
self.trim_next = False
self.globals = {'_haml': self}
def setops(self, *args, **kwargs):
"""
Sets options for the Haml engine. Options should be given as keyword arguments.
"""
(self.op, _) = Engine.optparser.parse_args([])
for (k, v) in kwargs.items():
opt = Engine.optparser.get_option('--' + k)
if opt:
self.op.__dict__[k] = opt.check_value(k, v)
def _modulename(self, path):
"""ensure no . characters exist in path, as these have meaning in g3"""
return path.replace(".", "-dot-")
def find_module(self, fullname):
if not fullname.startswith("//"):
dir = os.path.dirname(self.op.filename)
else:
dir = os.curdir
fullname = fullname[2:]
path = os.path.join(dir, '%s.haml' % fullname)
if os.path.exists(path):
return Loader(self, path)
raise ImportError, "could not find file at path %s" % path
def load_module(self, fullname, path, loader):
code = self.cache(path)
fullname = self._modulename(fullname)
mod = imp.new_module(fullname)
mod = sys.modules.setdefault(fullname, mod)
mod.__file__ = path
mod.__loader__ = loader
mod.__dict__.update(self.globals)
ex(code, mod.__dict__)
return mod
def imp(self, fullname):
finder = Finder(self)
loader = finder.find_module(fullname)
if loader:
return loader.load_module(fullname)
return None
def entab(self):
self.depth += 1
def detab(self):
self.depth -= 1
def trim(self):
self.trim_next = True
def indent(self, indent):
if not self.trim_next:
self.write('\n')
if indent:
self.write(' ' * self.depth)
self.trim_next = False
def write(self, *args):
for arg in args:
arg = arg.encode("ascii", "xmlcharrefreplace")
self.html.write(arg)
def escape(self, string):
return cgi.escape(string, True)
def preserve_whitespace(self, string):
return string.replace('\n', '
')
def attrs(self, id, klass, a):
a = dict((k, v) for k, v in a.items() if v != None)
if id:
a['id'] = id + '_' + a.get('id', '') if 'id' in a else id
if klass:
a['class'] = (klass + ' ' + a.get('class', '')).strip()
w = self.op.attr_wrapper
for k, v in a.items():
if v is None or v is False: continue
if v is True: v = k # for things like checked=checked
v = unicode(v).replace(w, {'"': '"', "'": '''}[w])
self.write(' %s=%s%s%s' % (k, w, v, w))
def compile(self, s, filename="<string>"):
"""
Compile a HAML string, returning a Python code object that can be exec'd.
Optional filename parameter specifies the name of the file containing the HAML
code, which helps give better error messages.
"""
self.parser.__dict__.update({
'depth': 0,
'src': [],
'last_obj': None,
'debug': self.op.debug,
'op': self.op,
'to_close': [],
'preserve': 0,
'lineno': 1,
})
self.lexer.begin('INITIAL')
self.lexer.__dict__.update({
'depth': 0,
'type': None,
'length': None,
'block': None,
'lineno': 1,
})
try:
self.parser.parse(s,
lexer=self.lexer,
debug=self.op.debug,
tracking=True)
except HamlParserException, ex:
lineno, haml_line, msg = ex
if type(haml_line) == int:
#interpret haml_line as character position to get the line
haml_line = get_lines_in_position_range(
self.lexer.lexdata, haml_line, haml_line)
raise HamlException, "Parse error in file %r: %s at line %d:\n%s\n%s" % \
(filename, msg, lineno, haml_line, traceback.format_exc())
#add a line too the beginning of the Python source indicating which
#Haml file this is. This can be accessed later for getting descriptive
#error messages.
lines = ["HAML_file_name = %r" % filename]
#haml_lines maps Python lines to Haml (line number, code) pairs.
haml_lines = [(0, "<no line 0>"), (0, "<HAML setup>")]
for call in self.parser.src:
line = str(call)
lines.append(line)
haml_line = call.haml.posinfo
#append once for every Python line this Haml call turned into
for i in range(1 + line.count('\n')):
haml_lines.append(haml_line)
self.haml_line_cache[filename] = haml_lines
src = '\n'.join(lines) + '\n'
try:
#important for file to be "<haml>" so execute() can detect Haml
#code in tracebacks
return code.compile_command(src, "<haml>", "exec")
except SyntaxError:
exc_type, exc_value, exc_traceback = sys.exc_info()
haml_line_number, haml_line = self.get_haml_line_info(
filename, exc_value.lineno, exc_value.text)
#change the syntax error message to show the Haml code
message = traceback.format_exception_only(exc_type, exc_value)
#message[0] was originally 'File "<pythonfile>", line <pythonline>'
message[0] = ' File "%s", line %d\n' % (filename,
haml_line_number)
#message[1] was originally the python line with the syntax error
message[1] = ' %s\n Python:\n%s' % (haml_line, message[1])
raise HamlException, ''.join(message)
def reset(self):
self.depth = 0
self.html = StringIO()
self.trim_next = False
self.globals = { '_haml': self }
def reset(self):
self.depth = 0
self.html = StringIO()
self.trim_next = False
self.globals = {'_haml': self}
