blob: f0366d574e94d09114d0256d81c1b63de2ad230b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
#include "utils.hh"
#include "decoder.hh"
#include "sax_decoder.hh"
#include "sax_decoder_factory.hh"
namespace modxml {
namespace sax {
namespace {
std::string cleanup_encoding(std::string const& str) {
std::string ret;
ret.reserve(str.size());
for (auto c : str) {
if (c >= 'A' && c <= 'Z') {
ret.push_back(c | 0x20);
} else if ((c >= 'a' && c <= 'z') || (c >= '0' && c <= '9')) {
ret.push_back(c);
} else if (c == '.' || c == '_' || c == '-') {
ret.push_back('-');
}
}
return ret;
}
} // namespace
// Names inspired by:
// https://www.iana.org/assignments/character-sets/character-sets.xhtml
std::unique_ptr<Decoder> pick_decoder_for_encoding(
std::string const& encoding, DecoderFactory* factory) {
auto clean_enc = cleanup_encoding(encoding);
if (clean_enc == "utf-8" || clean_enc == "utf8") {
return create_utf8_decoder();
}
if (clean_enc == "utf-16" || clean_enc == "utf16") {
return create_utf16_decoder();
}
if (clean_enc == "utf-16be" || clean_enc == "utf16be") {
return create_utf16be_decoder();
}
if (clean_enc == "utf-16le" || clean_enc == "utf16le") {
return create_utf16le_decoder();
}
if (clean_enc == "utf-32" || clean_enc == "utf32") {
return create_utf32_decoder();
}
if (clean_enc == "utf-32be" || clean_enc == "utf32be") {
return create_utf32be_decoder();
}
if (clean_enc == "utf-32le" || clean_enc == "utf32le") {
return create_utf32le_decoder();
}
if (clean_enc == "ascii" || clean_enc == "us-ascii" ||
clean_enc == "usascii" || clean_enc == "iso-ir-6" ||
clean_enc == "ansi-x3-4-1968" || clean_enc == "ansi-x3-4-1986" ||
clean_enc == "iso-646-irv1991" || clean_enc == "iso646-us" ||
clean_enc == "us" || clean_enc == "ibm367" || clean_enc == "cp367") {
return create_ascii_decoder();
}
if (factory) {
return factory->create(encoding);
}
return nullptr;
}
} // namespace sax
} // namespace modxml
|
