read_fonts/generated/
generated_cff2.rs

1// THIS FILE IS AUTOGENERATED.
2// Any changes to this file will be overwritten.
3// For more information about how codegen works, see font-codegen/README.md
4
5#[allow(unused_imports)]
6use crate::codegen_prelude::*;
7
8impl<'a> MinByteRange<'a> for Cff2Header<'a> {
9    fn min_byte_range(&self) -> Range<usize> {
10        0..self.trailing_data_byte_range().end
11    }
12    fn min_table_bytes(&self) -> &'a [u8] {
13        let range = self.min_byte_range();
14        self.data.as_bytes().get(range).unwrap_or_default()
15    }
16}
17
18impl<'a> FontRead<'a> for Cff2Header<'a> {
19    fn read(data: FontData<'a>) -> Result<Self, ReadError> {
20        #[allow(clippy::absurd_extreme_comparisons)]
21        if data.len() < Self::MIN_SIZE {
22            return Err(ReadError::OutOfBounds);
23        }
24        Ok(Self { data })
25    }
26}
27
28/// [Compact Font Format (CFF) version 2](https://learn.microsoft.com/en-us/typography/opentype/spec/cff2) table header
29#[derive(Clone)]
30pub struct Cff2Header<'a> {
31    data: FontData<'a>,
32}
33
34#[allow(clippy::needless_lifetimes)]
35impl<'a> Cff2Header<'a> {
36    pub const MIN_SIZE: usize =
37        (u8::RAW_BYTE_LEN + u8::RAW_BYTE_LEN + u8::RAW_BYTE_LEN + u16::RAW_BYTE_LEN);
38    basic_table_impls!(impl_the_methods);
39
40    /// Format major version (set to 2).
41    pub fn major_version(&self) -> u8 {
42        let range = self.major_version_byte_range();
43        self.data.read_at(range.start).ok().unwrap()
44    }
45
46    /// Format minor version (set to 0).
47    pub fn minor_version(&self) -> u8 {
48        let range = self.minor_version_byte_range();
49        self.data.read_at(range.start).ok().unwrap()
50    }
51
52    /// Header size (bytes).
53    pub fn header_size(&self) -> u8 {
54        let range = self.header_size_byte_range();
55        self.data.read_at(range.start).ok().unwrap()
56    }
57
58    /// Length of Top DICT structure in bytes.
59    pub fn top_dict_length(&self) -> u16 {
60        let range = self.top_dict_length_byte_range();
61        self.data.read_at(range.start).ok().unwrap()
62    }
63
64    /// Padding bytes before the start of the Top DICT.
65    pub fn _padding(&self) -> &'a [u8] {
66        let range = self._padding_byte_range();
67        self.data.read_array(range).ok().unwrap_or_default()
68    }
69
70    /// Data containing the Top DICT.
71    pub fn top_dict_data(&self) -> &'a [u8] {
72        let range = self.top_dict_data_byte_range();
73        self.data.read_array(range).ok().unwrap_or_default()
74    }
75
76    /// Remaining table data.
77    pub fn trailing_data(&self) -> &'a [u8] {
78        let range = self.trailing_data_byte_range();
79        self.data.read_array(range).ok().unwrap_or_default()
80    }
81
82    pub fn major_version_byte_range(&self) -> Range<usize> {
83        let start = 0;
84        start..start + u8::RAW_BYTE_LEN
85    }
86
87    pub fn minor_version_byte_range(&self) -> Range<usize> {
88        let start = self.major_version_byte_range().end;
89        start..start + u8::RAW_BYTE_LEN
90    }
91
92    pub fn header_size_byte_range(&self) -> Range<usize> {
93        let start = self.minor_version_byte_range().end;
94        start..start + u8::RAW_BYTE_LEN
95    }
96
97    pub fn top_dict_length_byte_range(&self) -> Range<usize> {
98        let start = self.header_size_byte_range().end;
99        start..start + u16::RAW_BYTE_LEN
100    }
101
102    pub fn _padding_byte_range(&self) -> Range<usize> {
103        let header_size = self.header_size();
104        let start = self.top_dict_length_byte_range().end;
105        start..start + (transforms::subtract(header_size, 5_usize)).saturating_mul(u8::RAW_BYTE_LEN)
106    }
107
108    pub fn top_dict_data_byte_range(&self) -> Range<usize> {
109        let top_dict_length = self.top_dict_length();
110        let start = self._padding_byte_range().end;
111        start..start + (top_dict_length as usize).saturating_mul(u8::RAW_BYTE_LEN)
112    }
113
114    pub fn trailing_data_byte_range(&self) -> Range<usize> {
115        let start = self.top_dict_data_byte_range().end;
116        start..start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN
117    }
118}
119
120#[cfg(feature = "experimental_traverse")]
121impl<'a> SomeTable<'a> for Cff2Header<'a> {
122    fn type_name(&self) -> &str {
123        "Cff2Header"
124    }
125    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
126        match idx {
127            0usize => Some(Field::new("major_version", self.major_version())),
128            1usize => Some(Field::new("minor_version", self.minor_version())),
129            2usize => Some(Field::new("header_size", self.header_size())),
130            3usize => Some(Field::new("top_dict_length", self.top_dict_length())),
131            4usize => Some(Field::new("_padding", self._padding())),
132            5usize => Some(Field::new("top_dict_data", self.top_dict_data())),
133            6usize => Some(Field::new("trailing_data", self.trailing_data())),
134            _ => None,
135        }
136    }
137}
138
139#[cfg(feature = "experimental_traverse")]
140#[allow(clippy::needless_lifetimes)]
141impl<'a> std::fmt::Debug for Cff2Header<'a> {
142    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
143        (self as &dyn SomeTable<'a>).fmt(f)
144    }
145}
146
147impl<'a> MinByteRange<'a> for Index<'a> {
148    fn min_byte_range(&self) -> Range<usize> {
149        0..self.data_byte_range().end
150    }
151    fn min_table_bytes(&self) -> &'a [u8] {
152        let range = self.min_byte_range();
153        self.data.as_bytes().get(range).unwrap_or_default()
154    }
155}
156
157impl<'a> FontRead<'a> for Index<'a> {
158    fn read(data: FontData<'a>) -> Result<Self, ReadError> {
159        #[allow(clippy::absurd_extreme_comparisons)]
160        if data.len() < Self::MIN_SIZE {
161            return Err(ReadError::OutOfBounds);
162        }
163        Ok(Self { data })
164    }
165}
166
167/// An array of variable-sized objects in a `CFF2` table.
168#[derive(Clone)]
169pub struct Index<'a> {
170    data: FontData<'a>,
171}
172
173#[allow(clippy::needless_lifetimes)]
174impl<'a> Index<'a> {
175    pub const MIN_SIZE: usize = (u32::RAW_BYTE_LEN + u8::RAW_BYTE_LEN);
176    basic_table_impls!(impl_the_methods);
177
178    /// Number of objects stored in INDEX.
179    pub fn count(&self) -> u32 {
180        let range = self.count_byte_range();
181        self.data.read_at(range.start).ok().unwrap()
182    }
183
184    /// Object array element size.
185    pub fn off_size(&self) -> u8 {
186        let range = self.off_size_byte_range();
187        self.data.read_at(range.start).ok().unwrap()
188    }
189
190    /// Bytes containing `count + 1` offsets each of `off_size`.
191    pub fn offsets(&self) -> &'a [u8] {
192        let range = self.offsets_byte_range();
193        self.data.read_array(range).ok().unwrap_or_default()
194    }
195
196    /// Array containing the object data.
197    pub fn data(&self) -> &'a [u8] {
198        let range = self.data_byte_range();
199        self.data.read_array(range).ok().unwrap_or_default()
200    }
201
202    pub fn count_byte_range(&self) -> Range<usize> {
203        let start = 0;
204        start..start + u32::RAW_BYTE_LEN
205    }
206
207    pub fn off_size_byte_range(&self) -> Range<usize> {
208        let start = self.count_byte_range().end;
209        start..start + u8::RAW_BYTE_LEN
210    }
211
212    pub fn offsets_byte_range(&self) -> Range<usize> {
213        let count = self.count();
214        let off_size = self.off_size();
215        let start = self.off_size_byte_range().end;
216        start
217            ..start
218                + (transforms::add_multiply(count, 1_usize, off_size))
219                    .saturating_mul(u8::RAW_BYTE_LEN)
220    }
221
222    pub fn data_byte_range(&self) -> Range<usize> {
223        let start = self.offsets_byte_range().end;
224        start..start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN
225    }
226}
227
228#[cfg(feature = "experimental_traverse")]
229impl<'a> SomeTable<'a> for Index<'a> {
230    fn type_name(&self) -> &str {
231        "Index"
232    }
233    fn get_field(&self, idx: usize) -> Option<Field<'a>> {
234        match idx {
235            0usize => Some(Field::new("count", self.count())),
236            1usize => Some(Field::new("off_size", self.off_size())),
237            2usize => Some(Field::new("offsets", self.offsets())),
238            3usize => Some(Field::new("data", self.data())),
239            _ => None,
240        }
241    }
242}
243
244#[cfg(feature = "experimental_traverse")]
245#[allow(clippy::needless_lifetimes)]
246impl<'a> std::fmt::Debug for Index<'a> {
247    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
248        (self as &dyn SomeTable<'a>).fmt(f)
249    }
250}
read_fonts/generated/generated_cff2.rs

read_fonts/generated/
generated_cff2.rs
