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
use std::error;
use std::fmt;
use roxmltree::{self, TextPos};
/// SVG DOM errors.
#[derive(Debug)]
pub enum Error {
/// If you want to use referenced element inside link attribute,
/// such element must have a non-empty ID.
ElementMustHaveAnId,
/// Linked nodes can't reference each other or itself.
///
/// # Examples
///
/// ```text
/// <linearGradient id="lg1" xlink:href="#lg2"/>
/// <linearGradient id="lg2" xlink:href="#lg1"/>
/// ```
///
/// or
///
/// ```text
/// <linearGradient id="lg1" xlink:href="#lg1"/>
/// ```
ElementCrosslink,
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::ElementMustHaveAnId => {
write!(f, "the element must have an id")
}
Error::ElementCrosslink => {
write!(f, "element crosslink")
}
}
}
}
impl error::Error for Error {
fn description(&self) -> &str {
"an SVG error"
}
}
/// SVG parsing errors.
#[derive(Debug)]
pub enum ParserError {
/// Parsed document must have an `svg` element.
NoSvgElement,
/// *svgdom* didn't support most of the CSS2 spec.
UnsupportedCSS(TextPos),
/// A DOM API error.
DomError(Error),
/// An invalid attribute value.
InvalidAttributeValue(TextPos),
/// A `roxmltree` error.
RoXmlError(roxmltree::Error),
}
impl fmt::Display for ParserError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
ParserError::NoSvgElement => {
write!(f, "the document does not have an SVG element")
}
ParserError::UnsupportedCSS(pos) => {
write!(f, "unsupported CSS at {}", pos)
}
ParserError::InvalidAttributeValue(pos) => {
write!(f, "invalid attribute value at {}", pos)
}
ParserError::DomError(ref e) => {
write!(f, "{}", e)
}
ParserError::RoXmlError(ref e) => {
write!(f, "{}", e)
}
}
}
}
impl error::Error for ParserError {
fn description(&self) -> &str {
"an SVG parsing error"
}
}
impl From<Error> for ParserError {
fn from(value: Error) -> Self {
ParserError::DomError(value)
}
}
impl From<roxmltree::Error> for ParserError {
fn from(value: roxmltree::Error) -> Self {
ParserError::RoXmlError(value)
}
}