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
|
use std::fs::{self, File};
use std::io;
use std::path::Path;
use std::rc::Rc;
use memmap2::Mmap;
use same_file::Handle;
use walkdir::WalkDir;
use super::{FileHash, Loader};
use crate::font::FaceInfo;
/// Loads fonts and files from the local file system.
///
/// _This is only available when the `fs` feature is enabled._
#[derive(Default)]
pub struct FsLoader {
faces: Vec<FaceInfo>,
}
impl FsLoader {
/// Create a new loader without any fonts.
pub fn new() -> Self {
Self { faces: vec![] }
}
/// Builder-style variant of [`search_system`](Self::search_system).
pub fn with_system(mut self) -> Self {
self.search_system();
self
}
/// Builder-style variant of [`search_path`](Self::search_path).
pub fn with_path(mut self, dir: impl AsRef<Path>) -> Self {
self.search_path(dir);
self
}
/// Builder-style method to wrap the loader in an [`Rc`] to make it usable
/// with the [`Context`](crate::Context).
pub fn wrap(self) -> Rc<Self> {
Rc::new(self)
}
/// Search for fonts in the operating system's font directories.
pub fn search_system(&mut self) {
self.search_system_impl();
}
#[cfg(all(unix, not(target_os = "macos")))]
fn search_system_impl(&mut self) {
self.search_path("/usr/share/fonts");
self.search_path("/usr/local/share/fonts");
if let Some(dir) = dirs::font_dir() {
self.search_path(dir);
}
}
#[cfg(target_os = "macos")]
fn search_system_impl(&mut self) {
self.search_path("/Library/Fonts");
self.search_path("/Network/Library/Fonts");
self.search_path("/System/Library/Fonts");
if let Some(dir) = dirs::font_dir() {
self.search_path(dir);
}
}
#[cfg(windows)]
fn search_system_impl(&mut self) {
let windir =
std::env::var("WINDIR").unwrap_or_else(|_| "C:\\Windows".to_string());
self.search_path(Path::new(&windir).join("Fonts"));
if let Some(roaming) = dirs::config_dir() {
self.search_path(roaming.join("Microsoft\\Windows\\Fonts"));
}
if let Some(local) = dirs::cache_dir() {
self.search_path(local.join("Microsoft\\Windows\\Fonts"));
}
}
/// Search for all fonts at a path.
///
/// If the path is a directory, all contained fonts will be searched for
/// recursively.
pub fn search_path(&mut self, path: impl AsRef<Path>) {
let walk = WalkDir::new(path)
.follow_links(true)
.sort_by(|a, b| a.file_name().cmp(b.file_name()))
.into_iter()
.filter_map(|e| e.ok());
for entry in walk {
let path = entry.path();
if let Some(ext) = path.extension().and_then(|s| s.to_str()) {
if matches!(
ext,
"ttf" | "otf" | "TTF" | "OTF" | "ttc" | "otc" | "TTC" | "OTC",
) {
self.search_file(path);
}
}
}
}
/// Index the font faces in the file at the given path.
///
/// The file may form a font collection and contain multiple font faces,
/// which will then all be indexed.
fn search_file(&mut self, path: impl AsRef<Path>) {
let path = path.as_ref();
let path = path.strip_prefix(".").unwrap_or(path);
if let Ok(file) = File::open(path) {
if let Ok(mmap) = unsafe { Mmap::map(&file) } {
self.faces.extend(FaceInfo::parse(&path, &mmap));
}
}
}
}
impl Loader for FsLoader {
fn faces(&self) -> &[FaceInfo] {
&self.faces
}
fn resolve(&self, path: &Path) -> io::Result<FileHash> {
let file = File::open(path)?;
let meta = file.metadata()?;
if meta.is_file() {
let handle = Handle::from_file(file)?;
Ok(FileHash(fxhash::hash64(&handle)))
} else {
Err(io::ErrorKind::NotFound.into())
}
}
fn load(&self, path: &Path) -> io::Result<Vec<u8>> {
fs::read(path)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_index_font_dir() {
let faces = FsLoader::new().with_path("fonts").faces;
let mut paths: Vec<_> = faces.into_iter().map(|info| info.path).collect();
paths.sort();
assert_eq!(paths, [
Path::new("fonts/EBGaramond-Bold.ttf"),
Path::new("fonts/EBGaramond-BoldItalic.ttf"),
Path::new("fonts/EBGaramond-Italic.ttf"),
Path::new("fonts/EBGaramond-Regular.ttf"),
Path::new("fonts/Inconsolata-Bold.ttf"),
Path::new("fonts/Inconsolata-Regular.ttf"),
Path::new("fonts/LatinModernMath.otf"),
Path::new("fonts/NotoSansArabic-Regular.ttf"),
Path::new("fonts/NotoSerifCJKsc-Regular.otf"),
Path::new("fonts/NotoSerifHebrew-Bold.ttf"),
Path::new("fonts/NotoSerifHebrew-Regular.ttf"),
Path::new("fonts/PTSans-Regular.ttf"),
Path::new("fonts/TwitterColorEmoji.ttf"),
]);
}
}
|
