You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
230 lines
7.4 KiB
230 lines
7.4 KiB
from flask import Markup, escape
|
|
from typing import List, Optional, Union, Tuple
|
|
import types
|
|
|
|
|
|
tag_names = ["a", "abbr", "acronym", "address", "applet", "area", "article", "aside", "audio", "b", "base", "basefont", "bdi", "bdo", "big", "blockquote", "body", "br", "button", "canvas", "caption", "center", "cite", "code", "col", "colgroup", "data", "datalist", "dd", "del", "details", "dfn", "dialog", "dir", "div", "dl", "dt", "em", "embed", "fieldset", "figcaption", "figure", "font", "footer", "form", "frame", "frameset", "head", "header", "hgroup", "h1", "h2", "h3", "h4", "h5", "h6", "hr", "html", "i", "iframe", "img", "input", "ins", "kbd", "keygen", "label", "legend", "li", "link", "main", "map", "mark", "menu", "menuitem", "meta", "meter", "nav", "noframes", "noscript", "object", "ol", "optgroup", "option", "output", "p", "param", "picture", "pre", "progress", "q", "rp", "rt", "ruby", "s", "samp", "script", "section", "select", "small", "source", "span", "strike", "strong", "style", "sub", "summary", "sup", "svg", "table", "tbody", "td", "template", "textarea", "tfoot", "th", "thead", "time", "title", "tr", "track", "tt", "u", "ul", "var", "video", "wbr"]
|
|
|
|
|
|
class EscapeError(RuntimeError):
|
|
pass
|
|
|
|
|
|
def escape_attribute(x:str) -> str:
|
|
return str(x).replace("&", "&").replace('"', """)
|
|
|
|
|
|
def escape_attribute_name(x:str) -> str:
|
|
for c in "<>='\" ":
|
|
if c in x:
|
|
raise EscapeError
|
|
return x
|
|
|
|
|
|
def escape_tag_name(x:str) -> str:
|
|
return escape_attribute_name(x)
|
|
|
|
Element = Union[str, Markup, 'Bucket']
|
|
|
|
|
|
def indent_str(indent, s):
|
|
return " "*indent + s + "\n" if indent is not None else s
|
|
|
|
class Bucket:
|
|
content: List[Element]
|
|
is_paired: bool
|
|
builder: 'Builder'
|
|
def __init__(self, builder):
|
|
self.builder = builder
|
|
self.is_paired = False
|
|
self.content = []
|
|
self.before_tag = None
|
|
|
|
def add(self, x: Element):
|
|
if isinstance(x, types.FunctionType):
|
|
before_current_tag = self.builder.current_tag
|
|
self.builder.current_tag = self
|
|
try:
|
|
x(self)
|
|
finally:
|
|
self.builder.current_tag = before_current_tag
|
|
else:
|
|
self.is_paired = True
|
|
self.content.append(x)
|
|
|
|
def __call__(self, *arg, **kvarg):
|
|
for i in arg:
|
|
self.add(i)
|
|
for k, v in kvarg.items():
|
|
self.add_attribute(remove_leading_underscore(k), v)
|
|
return self
|
|
|
|
def add_tag(self, name: str, attributes: List[Tuple[str, str]]):
|
|
t = Tag(self.builder, name, attributes)
|
|
self.add(t)
|
|
return t
|
|
|
|
def line(self):
|
|
t = Line(self.builder)
|
|
self.add(t)
|
|
return t
|
|
|
|
def _line(self):
|
|
return Line(self)
|
|
|
|
def print(self):
|
|
out = []
|
|
self.serialize_append_to_list(out, 0)
|
|
return Markup("".join(out))
|
|
|
|
def print_file(self):
|
|
out = ["<!DOCTYPE html>\n"]
|
|
self.serialize_append_to_list(out, 0)
|
|
return Markup("".join(out))
|
|
|
|
def __enter__(self):
|
|
if self.before_tag is not None:
|
|
raise RuntimeError("Duplicit __enter__")
|
|
self.before_tag = self.builder.current_tag
|
|
self.builder.current_tag = self
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_value, exc_traceback):
|
|
if self.before_tag is None:
|
|
raise RuntimeError("__exit__ before __enter__")
|
|
self.builder.current_tag = self.before_tag
|
|
self.before_tag = None
|
|
|
|
def serialize_append_to_list(self, out, indent):
|
|
for i in self.content:
|
|
if isinstance(i, Bucket):
|
|
i.serialize_append_to_list(out, indent)
|
|
elif isinstance(i, Markup):
|
|
for j in i.__html__().split("\n"):
|
|
out.append(indent_str(indent, j))
|
|
else:
|
|
for j in escape(str(i)).split("\n"):
|
|
out.append(indent_str(indent, j))
|
|
|
|
|
|
class Tag(Bucket):
|
|
name: str
|
|
attributes: List[Tuple[str, str]]
|
|
|
|
def __init__(self, builder, name: str, attributes: List[Tuple[str, str]]):
|
|
super().__init__(builder)
|
|
self.name = name
|
|
self.attributes = attributes
|
|
|
|
def add_attribute(self, k, v):
|
|
self.attributes.append((k, v))
|
|
|
|
def format_attributes(self):
|
|
return " ".join(f'{escape_attribute_name(i[0])}="{escape_attribute(i[1])}"' for i in self.attributes)
|
|
|
|
def serialize_append_to_list(self, out, indent):
|
|
if self.is_paired:
|
|
out.append(indent_str(indent, f"<{escape_tag_name(self.name)} {self.format_attributes()}>"))
|
|
super().serialize_append_to_list(out, indent + 1 if indent is not None else None)
|
|
out.append(indent_str(indent, f"</{escape_tag_name(self.name)}>"))
|
|
else:
|
|
out.append(indent_str(indent, f"<{escape_tag_name(self.name)} {self.format_attributes()} />"))
|
|
|
|
|
|
class Line(Bucket):
|
|
def serialize_append_to_list(self, out, indent):
|
|
if indent is None:
|
|
super().serialize_append_to_list(out, None)
|
|
else:
|
|
out.append(indent_str(indent,"")[:-1])
|
|
super().serialize_append_to_list(out, None)
|
|
out.append("\n")
|
|
|
|
|
|
|
|
class Builder:
|
|
current_tag: Bucket
|
|
root_tag: Bucket
|
|
def __init__(self, tag: Bucket = None):
|
|
if tag is None:
|
|
tag = Bucket(self)
|
|
self.root_tag = tag
|
|
self.current_tag = tag
|
|
|
|
def add_tag(self, name: str, attributes: List[Tuple[str, str]] = []):
|
|
return self.current_tag.add_tag(name, attributes)
|
|
|
|
def line(self):
|
|
return self.current_tag.line()
|
|
|
|
def _line(self):
|
|
return Line(self)
|
|
|
|
def __call__(self, *arg, **kvarg):
|
|
self.current_tag(*arg, **kvarg)
|
|
return self
|
|
|
|
def print(self):
|
|
return self.root_tag.print()
|
|
|
|
def print_file(self):
|
|
return self.root_tag.print_file()
|
|
|
|
|
|
for name in tag_names:
|
|
def run(name):
|
|
def l1(self, *args, **kvarg):
|
|
return self.add_tag(name, [(remove_leading_underscore(k), v) for k, v in kvarg.items()])(*args)
|
|
def l2(self, *args, **kvarg):
|
|
return Tag(self, name, [(remove_leading_underscore(k), v) for k, v in kvarg.items()])(*args)
|
|
def l3(self, *args, **kvarg):
|
|
return Tag(self.builder, name, [(remove_leading_underscore(k), v) for k, v in kvarg.items()])(*args)
|
|
setattr(Builder, name, l1)
|
|
setattr(Builder, f"_{name}", l2)
|
|
setattr(Bucket, name, l1)
|
|
setattr(Bucket, f"_{name}", l3)
|
|
run(name)
|
|
|
|
|
|
class HtmlBuilder(Builder):
|
|
def __init__(self):
|
|
super().__init__(Tag(self, "html", []))
|
|
|
|
|
|
def remove_leading_underscore(s):
|
|
if s == "":
|
|
return s
|
|
if s[0] == "_":
|
|
return s[1:]
|
|
return s
|
|
|
|
|
|
class WrapAfterBuilder(Builder):
|
|
def __init__(self, f):
|
|
super().__init__(Bucket(self))
|
|
self.wrap_done = False
|
|
self.wrap_function = f
|
|
|
|
def wrap(self, *arg, **kvarg):
|
|
if self.wrap_done:
|
|
return
|
|
self.wrap_done = True
|
|
content = self.root_tag.content
|
|
self.root_tag = None
|
|
self.current_tag = None
|
|
self.root_tag = self.wrap_function(self, content, *arg, **kvarg) or self.root_tag
|
|
return self
|
|
|
|
def print(self, *arg, **kvarg):
|
|
self.wrap()
|
|
return super().print(*arg, **kvarg)
|
|
|
|
def print_file(self, *arg, **kvarg):
|
|
self.wrap()
|
|
return super().print_file(*arg, **kvarg)
|
|
|
|
|
|
def WrapAfterBuilder_decorator(f):
|
|
def l():
|
|
return WrapAfterBuilder(f)
|
|
return l
|
|
|