Commit | Line | Data |
---|---|---|
ff79cdbf FT |
1 | import xml.dom.minidom |
2 | ||
3 | class node(object): | |
4 | def __str__(self): | |
5 | doc = xml.dom.minidom.Document() | |
6 | return self.__todom__(doc).toxml() | |
7 | ||
62551769 | 8 | class text(node, str): |
ff79cdbf FT |
9 | def __todom__(self, doc): |
10 | return doc.createTextNode(self) | |
11 | ||
3414365c | 12 | class raw(node, str): |
f3464a4a FT |
13 | def __todom__(self, doc): |
14 | raise Exception("Cannot convert raw code to DOM objects") | |
15 | ||
ff79cdbf FT |
16 | class element(node): |
17 | def __init__(self, ns, name, ctx): | |
18 | self.ns = ns | |
62551769 | 19 | self.name = str(name) |
ff79cdbf FT |
20 | self.ctx = ctx |
21 | self.attrs = {} | |
22 | self.children = [] | |
23 | ||
24 | def __call__(self, *children, **attrs): | |
25 | for child in children: | |
26 | self.children.append(self.ctx.nodefrom(child)) | |
62551769 FT |
27 | for k, v in attrs.items(): |
28 | self.attrs[str(k)] = str(v) | |
ff79cdbf FT |
29 | return self |
30 | ||
31 | def __todom__(self, doc): | |
32 | el = doc.createElementNS(self.ns, self.name) | |
62551769 | 33 | for k, v in self.attrs.items(): |
ff79cdbf FT |
34 | el.setAttribute(k, v) |
35 | for child in self.children: | |
36 | el.appendChild(child.__todom__(doc)) | |
37 | return el | |
38 | ||
39 | class context(object): | |
40 | def __init__(self): | |
41 | self.nodeconv = {} | |
62551769 FT |
42 | self.nodeconv[bytes] = lambda ob: text(ob, "utf-8") |
43 | self.nodeconv[str] = text | |
ff79cdbf | 44 | self.nodeconv[int] = text |
ff79cdbf FT |
45 | self.nodeconv[float] = text |
46 | ||
47 | def nodefrom(self, ob): | |
48 | if isinstance(ob, node): | |
49 | return ob | |
50 | if hasattr(ob, "__tonode__"): | |
51 | return ob.__tonode__() | |
52 | if type(ob) in self.nodeconv: | |
53 | return self.nodeconv[type(ob)](ob) | |
54 | raise Exception("No node conversion known for %s objects" % str(type(ob))) | |
55 | ||
56 | class constructor(object): | |
57 | def __init__(self, ns, elcls = element, ctx=None): | |
58 | self._ns = ns | |
59 | self._elcls = elcls | |
60 | if ctx is None: ctx = context() | |
61 | self._ctx = ctx | |
62 | ||
63 | def __getattr__(self, name): | |
64 | return self._elcls(self._ns, name, self._ctx) |