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
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
use crate::item::{Node, NodeType};
use crate::parser::combinators::delimited::delimited;
use crate::parser::combinators::tag::tag;
use crate::parser::combinators::take::take_until;
use crate::parser::xml::dtd::extsubset::extsubset;
use crate::parser::xml::element::content;
use crate::parser::{ParseError, ParseInput, StaticState};
use crate::value::Value;
use qualname::{NamespacePrefix, NamespaceUri};
use std::rc::Rc;
// Reference ::= EntityRef | CharRef
// \Its important to note, we pre-populate the standard char references in the DTD.
pub(crate) fn reference<'a, N: Node, L>()
-> impl Fn(ParseInput<'a, N>, &mut StaticState<L>) -> Result<(ParseInput<'a, N>, Vec<N>), ParseError>
where
L: FnMut(&NamespacePrefix) -> Result<NamespaceUri, ParseError>,
{
move |(input, state), ss| {
let e = delimited(tag("&"), take_until(";"), tag(";"))((input, state.clone()), ss);
match e {
Err(e) => Err(e),
Ok(((input1, mut state1), entitykey)) => {
match entitykey.as_str() {
"amp" => Ok((
(input1, state1),
vec![
state
.doc
.clone()
.unwrap()
.new_text(Rc::new(Value::from("&")))
.expect("unable to create text node"),
],
)),
"gt" => Ok((
(input1, state1),
vec![
state
.doc
.clone()
.unwrap()
.new_text(Rc::new(Value::from(">")))
.expect("unable to create text node"),
],
)),
"lt" => Ok((
(input1, state1),
vec![
state
.doc
.clone()
.unwrap()
.new_text(Rc::new(Value::from("<")))
.expect("unable to create text node"),
],
)),
"quot" => Ok((
(input1, state1),
vec![
state
.doc
.clone()
.unwrap()
.new_text(Rc::new(Value::from("\"")))
.expect("unable to create text node"),
],
)),
"apos" => Ok((
(input1, state1),
vec![
state
.doc
.clone()
.unwrap()
.new_text(Rc::new(Value::from("'")))
.expect("unable to create text node"),
],
)),
_ => {
match state1.clone().dtd.generalentities.get(&entitykey as &str) {
Some((entval, _)) => {
if state1.currententitydepth >= state1.maxentitydepth {
//attempting to exceed expansion depth
Err(ParseError::EntityDepth {
col: state1.currentcol,
row: state1.currentrow,
})
} else {
//Parse the entity, using the parserstate which has information on namespaces
let mut tempstate = state1.clone();
tempstate.currententitydepth += 1;
/*
We want to reuse the "Content" combinator to parse the entity, but
that function parses everything up until the closing tag of an XML element.
The fix? We append a < character and the parser will stop as if its hit that
closing tag. Then we check that that closing tag is all that remained on the parsing.
*/
let mut e2 = entval.clone();
e2.push('<');
match content()((e2.as_str(), tempstate), ss) {
Ok(((outstr, _), nodes)) => {
if outstr != "<" {
Err(ParseError::NotWellFormed(outstr.to_string()))
} else {
Ok(((input1, state1), nodes))
}
}
Err(_) => Err(ParseError::NotWellFormed(e2.clone())),
}
}
}
None => {
/* Check if any unparsed DTDs, if so parse and try again. */
match state1.ext_entities_to_parse.pop() {
None => Err(ParseError::MissingGenEntity {
col: state1.currentcol,
row: state1.currentrow,
}),
Some(sid) => {
ss.ext_dtd_resolver.map_or(
Err(ParseError::ExtDTDLoadError),
|s| {
let extdata = s(state1.docloc.clone(), sid).map_err(|_| ParseError::ExtDTDLoadError)?;
match extsubset()((extdata.as_str(), state1), ss) {
Err(e) => Err(e),
Ok(((_, state2), _)) => {
match state2
.clone()
.dtd
.generalentities
.get(&entitykey as &str)
{
Some((entval, _)) => {
if state2.currententitydepth
>= state2.maxentitydepth
{
//attempting to exceed expansion depth
Err(ParseError::EntityDepth {
col: state2.currentcol,
row: state2.currentrow,
})
} else {
//Parse the entity, using the parserstate which has information on namespaces
let mut tempstate =
state2.clone();
tempstate.currententitydepth +=
1;
/*
We want to reuse the "Content" combinator to parse the entity, but
that function parses everything up until the closing tag of an XML element.
The fix? We append a < character and the parser will stop as if its hit that
closing tag. Then we check that that closing tag is all that remained on the parsing.
*/
let mut e2 = entval.clone();
e2.push('<');
match content()((e2.as_str(), tempstate), ss) {
Ok(((outstr, _), nodes)) => {
if outstr != "<" {
Err(ParseError::NotWellFormed(outstr.to_string()))
} else {
Ok(((input1, state2), nodes))
}
}
Err(_) => Err(ParseError::NotWellFormed(e2.clone())),
}
}
}
None => {
Err(ParseError::MissingGenEntity {
col: state2.currentcol,
row: state2.currentrow,
})
}
}
}
}
}
)
}
}
}
}
}
}
}
}
}
}
pub(crate) fn textreference<'a, N: Node, L>()
-> impl Fn(ParseInput<'a, N>, &mut StaticState<L>) -> Result<(ParseInput<'a, N>, String), ParseError>
where
L: FnMut(&NamespacePrefix) -> Result<NamespaceUri, ParseError>,
{
move |(input, state), ss| {
let e = delimited(tag("&"), take_until(";"), tag(";"))((input, state), ss);
match e {
Err(e) => Err(e),
Ok(((input1, state1), entitykey)) => {
//if !["lt", "gt", "apos", "amp", "quot"].contains(&entitykey.as_str()){
match entitykey.as_str() {
"amp" => Ok(((input1, state1), "&".to_string())),
"gt" => Ok(((input1, state1), ">".to_string())),
"lt" => Ok(((input1, state1), "<".to_string())),
"quot" => Ok(((input1, state1), "\"".to_string())),
"apos" => Ok(((input1, state1), "'".to_string())),
_ => {
match state1.clone().dtd.generalentities.get(&entitykey as &str) {
Some((entval, _)) => {
if state1.currententitydepth >= state1.maxentitydepth {
//attempting to exceed expansion depth
Err(ParseError::EntityDepth {
col: state1.currentcol,
row: state1.currentrow,
})
} else {
//Parse the entity, using the parserstate which has information on namespaces
let mut tempstate = state1.clone();
tempstate.currententitydepth += 1;
/*
We want to reuse the "Content" combinator to parse the entity, but
that function parses everything up until the closing tag of an XML element.
The fix? We append a < character and the parser will stop as if its hit that
closing tag. Then we check that that closing tag is all that remained on the parsing.
*/
let mut e2 = entval.clone();
e2.push('<');
match content()((e2.as_str(), tempstate), ss) {
Ok(((outstr, _), nodes)) => {
if outstr != "<" {
Err(ParseError::NotWellFormed(outstr.to_string()))
} else {
let mut res = vec![];
for rn in nodes {
match rn.node_type() {
NodeType::Text => res.push(rn.to_string()),
_ => {
return Err(ParseError::NotWellFormed(
String::from("not a text node"),
));
}
}
}
Ok(((input1, state1), res.concat()))
}
}
Err(_) => Err(ParseError::NotWellFormed(e2.clone())),
}
}
}
None => Err(ParseError::MissingGenEntity {
col: state1.currentcol,
row: state1.currentrow,
}),
}
//} else {
// Err(ParseError::Combinator)
//}
}
}
}
}
}
}