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 ReadArgs for Cff2Header<'_> {
19    type Args = ();
20}
21
22impl<'a> FontRead<'a> for Cff2Header<'a> {
23    fn read_with_args(data: FontData<'a>, _: ()) -> Result<Self, ReadError> {
24        #[allow(clippy::absurd_extreme_comparisons)]
25        if data.len() < Self::MIN_SIZE {
26            return Err(ReadError::OutOfBounds);
27        }
28        Ok(Self { data })
29    }
30}
31
32/// [Compact Font Format (CFF) version 2](https://learn.microsoft.com/en-us/typography/opentype/spec/cff2) table header
33#[derive(Clone)]
34pub struct Cff2Header<'a> {
35    data: FontData<'a>,
36}
37
38#[allow(clippy::needless_lifetimes)]
39impl<'a> Cff2Header<'a> {
40    pub const MIN_SIZE: usize =
41        (u8::RAW_BYTE_LEN + u8::RAW_BYTE_LEN + u8::RAW_BYTE_LEN + u16::RAW_BYTE_LEN);
42    basic_table_impls!(impl_the_methods);
43
44    /// Format major version (set to 2).
45    pub fn major_version(&self) -> u8 {
46        let range = self.major_version_byte_range();
47        self.data.read_at(range.start).ok().unwrap()
48    }
49
50    /// Format minor version (set to 0).
51    pub fn minor_version(&self) -> u8 {
52        let range = self.minor_version_byte_range();
53        self.data.read_at(range.start).ok().unwrap()
54    }
55
56    /// Header size (bytes).
57    pub fn header_size(&self) -> u8 {
58        let range = self.header_size_byte_range();
59        self.data.read_at(range.start).ok().unwrap()
60    }
61
62    /// Length of Top DICT structure in bytes.
63    pub fn top_dict_length(&self) -> u16 {
64        let range = self.top_dict_length_byte_range();
65        self.data.read_at(range.start).ok().unwrap()
66    }
67
68    /// Padding bytes before the start of the Top DICT.
69    pub fn _padding(&self) -> &'a [u8] {
70        let range = self._padding_byte_range();
71        self.data.read_array(range).ok().unwrap_or_default()
72    }
73
74    /// Data containing the Top DICT.
75    pub fn top_dict_data(&self) -> &'a [u8] {
76        let range = self.top_dict_data_byte_range();
77        self.data.read_array(range).ok().unwrap_or_default()
78    }
79
80    /// Remaining table data.
81    pub fn trailing_data(&self) -> &'a [u8] {
82        let range = self.trailing_data_byte_range();
83        self.data.read_array(range).ok().unwrap_or_default()
84    }
85
86    pub fn major_version_byte_range(&self) -> Range<usize> {
87        let start = 0;
88        let end = start + u8::RAW_BYTE_LEN;
89        start..end
90    }
91
92    pub fn minor_version_byte_range(&self) -> Range<usize> {
93        let start = self.major_version_byte_range().end;
94        let end = start + u8::RAW_BYTE_LEN;
95        start..end
96    }
97
98    pub fn header_size_byte_range(&self) -> Range<usize> {
99        let start = self.minor_version_byte_range().end;
100        let end = start + u8::RAW_BYTE_LEN;
101        start..end
102    }
103
104    pub fn top_dict_length_byte_range(&self) -> Range<usize> {
105        let start = self.header_size_byte_range().end;
106        let end = start + u16::RAW_BYTE_LEN;
107        start..end
108    }
109
110    pub fn _padding_byte_range(&self) -> Range<usize> {
111        let header_size = self.header_size();
112        let start = self.top_dict_length_byte_range().end;
113        let end =
114            start + (transforms::subtract(header_size, 5_usize)).saturating_mul(u8::RAW_BYTE_LEN);
115        start..end
116    }
117
118    pub fn top_dict_data_byte_range(&self) -> Range<usize> {
119        let top_dict_length = self.top_dict_length();
120        let start = self._padding_byte_range().end;
121        let end = start + (transforms::to_usize(top_dict_length)).saturating_mul(u8::RAW_BYTE_LEN);
122        start..end
123    }
124
125    pub fn trailing_data_byte_range(&self) -> Range<usize> {
126        let start = self.top_dict_data_byte_range().end;
127        let end =
128            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
129        start..end
130    }
131}
132
133const _: () = assert!(FontData::default_data_long_enough(Cff2Header::MIN_SIZE));
134
135impl Default for Cff2Header<'_> {
136    fn default() -> Self {
137        Self {
138            data: FontData::default_table_data(),
139        }
140    }
141}
142
143impl<'a> MinByteRange<'a> for Index<'a> {
144    fn min_byte_range(&self) -> Range<usize> {
145        0..self.data_byte_range().end
146    }
147    fn min_table_bytes(&self) -> &'a [u8] {
148        let range = self.min_byte_range();
149        self.data.as_bytes().get(range).unwrap_or_default()
150    }
151}
152
153impl ReadArgs for Index<'_> {
154    type Args = ();
155}
156
157impl<'a> FontRead<'a> for Index<'a> {
158    fn read_with_args(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        let end = start + u32::RAW_BYTE_LEN;
205        start..end
206    }
207
208    pub fn off_size_byte_range(&self) -> Range<usize> {
209        let start = self.count_byte_range().end;
210        let end = start + u8::RAW_BYTE_LEN;
211        start..end
212    }
213
214    pub fn offsets_byte_range(&self) -> Range<usize> {
215        let count = self.count();
216        let off_size = self.off_size();
217        let start = self.off_size_byte_range().end;
218        let end = start
219            + (transforms::add_multiply(count, 1_usize, off_size)).saturating_mul(u8::RAW_BYTE_LEN);
220        start..end
221    }
222
223    pub fn data_byte_range(&self) -> Range<usize> {
224        let start = self.offsets_byte_range().end;
225        let end =
226            start + self.data.len().saturating_sub(start) / u8::RAW_BYTE_LEN * u8::RAW_BYTE_LEN;
227        start..end
228    }
229}
230
231const _: () = assert!(FontData::default_data_long_enough(Index::MIN_SIZE));
232
233impl Default for Index<'_> {
234    fn default() -> Self {
235        Self {
236            data: FontData::default_table_data(),
237        }
238    }
239}
read_fonts/generated/generated_cff2.rs

read_fonts/generated/
generated_cff2.rs
