379 lines
12 KiB
Rust
379 lines
12 KiB
Rust
// THIS FILE IS AUTOGENERATED.
|
|
// Any changes to this file will be overwritten.
|
|
// For more information about how codegen works, see font-codegen/README.md
|
|
|
|
#[allow(unused_imports)]
|
|
use crate::codegen_prelude::*;
|
|
|
|
/// The OpenType [Table Directory](https://docs.microsoft.com/en-us/typography/opentype/spec/otff#table-directory)
|
|
#[derive(Debug, Clone, Copy)]
|
|
#[doc(hidden)]
|
|
pub struct TableDirectoryMarker {
|
|
table_records_byte_len: usize,
|
|
}
|
|
|
|
impl TableDirectoryMarker {
|
|
pub fn sfnt_version_byte_range(&self) -> Range<usize> {
|
|
let start = 0;
|
|
start..start + u32::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn num_tables_byte_range(&self) -> Range<usize> {
|
|
let start = self.sfnt_version_byte_range().end;
|
|
start..start + u16::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn search_range_byte_range(&self) -> Range<usize> {
|
|
let start = self.num_tables_byte_range().end;
|
|
start..start + u16::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn entry_selector_byte_range(&self) -> Range<usize> {
|
|
let start = self.search_range_byte_range().end;
|
|
start..start + u16::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn range_shift_byte_range(&self) -> Range<usize> {
|
|
let start = self.entry_selector_byte_range().end;
|
|
start..start + u16::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn table_records_byte_range(&self) -> Range<usize> {
|
|
let start = self.range_shift_byte_range().end;
|
|
start..start + self.table_records_byte_len
|
|
}
|
|
}
|
|
|
|
impl MinByteRange for TableDirectoryMarker {
|
|
fn min_byte_range(&self) -> Range<usize> {
|
|
0..self.table_records_byte_range().end
|
|
}
|
|
}
|
|
|
|
impl<'a> FontRead<'a> for TableDirectory<'a> {
|
|
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
|
|
let mut cursor = data.cursor();
|
|
cursor.advance::<u32>();
|
|
let num_tables: u16 = cursor.read()?;
|
|
cursor.advance::<u16>();
|
|
cursor.advance::<u16>();
|
|
cursor.advance::<u16>();
|
|
let table_records_byte_len = (num_tables as usize)
|
|
.checked_mul(TableRecord::RAW_BYTE_LEN)
|
|
.ok_or(ReadError::OutOfBounds)?;
|
|
cursor.advance_by(table_records_byte_len);
|
|
cursor.finish(TableDirectoryMarker {
|
|
table_records_byte_len,
|
|
})
|
|
}
|
|
}
|
|
|
|
/// The OpenType [Table Directory](https://docs.microsoft.com/en-us/typography/opentype/spec/otff#table-directory)
|
|
pub type TableDirectory<'a> = TableRef<'a, TableDirectoryMarker>;
|
|
|
|
#[allow(clippy::needless_lifetimes)]
|
|
impl<'a> TableDirectory<'a> {
|
|
/// 0x00010000 or 0x4F54544F
|
|
pub fn sfnt_version(&self) -> u32 {
|
|
let range = self.shape.sfnt_version_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
/// Number of tables.
|
|
pub fn num_tables(&self) -> u16 {
|
|
let range = self.shape.num_tables_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
pub fn search_range(&self) -> u16 {
|
|
let range = self.shape.search_range_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
pub fn entry_selector(&self) -> u16 {
|
|
let range = self.shape.entry_selector_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
pub fn range_shift(&self) -> u16 {
|
|
let range = self.shape.range_shift_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
/// Table records array—one for each top-level table in the font
|
|
pub fn table_records(&self) -> &'a [TableRecord] {
|
|
let range = self.shape.table_records_byte_range();
|
|
self.data.read_array(range).unwrap()
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
impl<'a> SomeTable<'a> for TableDirectory<'a> {
|
|
fn type_name(&self) -> &str {
|
|
"TableDirectory"
|
|
}
|
|
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
|
match idx {
|
|
0usize => Some(Field::new("sfnt_version", self.sfnt_version())),
|
|
1usize => Some(Field::new("num_tables", self.num_tables())),
|
|
2usize => Some(Field::new("search_range", self.search_range())),
|
|
3usize => Some(Field::new("entry_selector", self.entry_selector())),
|
|
4usize => Some(Field::new("range_shift", self.range_shift())),
|
|
5usize => Some(Field::new(
|
|
"table_records",
|
|
traversal::FieldType::array_of_records(
|
|
stringify!(TableRecord),
|
|
self.table_records(),
|
|
self.offset_data(),
|
|
),
|
|
)),
|
|
_ => None,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
#[allow(clippy::needless_lifetimes)]
|
|
impl<'a> std::fmt::Debug for TableDirectory<'a> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
(self as &dyn SomeTable<'a>).fmt(f)
|
|
}
|
|
}
|
|
|
|
/// Record for a table in a font.
|
|
#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, bytemuck :: AnyBitPattern)]
|
|
#[repr(C)]
|
|
#[repr(packed)]
|
|
pub struct TableRecord {
|
|
/// Table identifier.
|
|
pub tag: BigEndian<Tag>,
|
|
/// Checksum for the table.
|
|
pub checksum: BigEndian<u32>,
|
|
/// Offset from the beginning of the font data.
|
|
pub offset: BigEndian<u32>,
|
|
/// Length of the table.
|
|
pub length: BigEndian<u32>,
|
|
}
|
|
|
|
impl TableRecord {
|
|
/// Table identifier.
|
|
pub fn tag(&self) -> Tag {
|
|
self.tag.get()
|
|
}
|
|
|
|
/// Checksum for the table.
|
|
pub fn checksum(&self) -> u32 {
|
|
self.checksum.get()
|
|
}
|
|
|
|
/// Offset from the beginning of the font data.
|
|
pub fn offset(&self) -> u32 {
|
|
self.offset.get()
|
|
}
|
|
|
|
/// Length of the table.
|
|
pub fn length(&self) -> u32 {
|
|
self.length.get()
|
|
}
|
|
}
|
|
|
|
impl FixedSize for TableRecord {
|
|
const RAW_BYTE_LEN: usize =
|
|
Tag::RAW_BYTE_LEN + u32::RAW_BYTE_LEN + u32::RAW_BYTE_LEN + u32::RAW_BYTE_LEN;
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
impl<'a> SomeRecord<'a> for TableRecord {
|
|
fn traverse(self, data: FontData<'a>) -> RecordResolver<'a> {
|
|
RecordResolver {
|
|
name: "TableRecord",
|
|
get_field: Box::new(move |idx, _data| match idx {
|
|
0usize => Some(Field::new("tag", self.tag())),
|
|
1usize => Some(Field::new("checksum", self.checksum())),
|
|
2usize => Some(Field::new("offset", self.offset())),
|
|
3usize => Some(Field::new("length", self.length())),
|
|
_ => None,
|
|
}),
|
|
data,
|
|
}
|
|
}
|
|
}
|
|
|
|
/// [TTC Header](https://learn.microsoft.com/en-us/typography/opentype/spec/otff#ttc-header)
|
|
#[derive(Debug, Clone, Copy)]
|
|
#[doc(hidden)]
|
|
pub struct TTCHeaderMarker {
|
|
table_directory_offsets_byte_len: usize,
|
|
dsig_tag_byte_start: Option<usize>,
|
|
dsig_length_byte_start: Option<usize>,
|
|
dsig_offset_byte_start: Option<usize>,
|
|
}
|
|
|
|
impl TTCHeaderMarker {
|
|
pub fn ttc_tag_byte_range(&self) -> Range<usize> {
|
|
let start = 0;
|
|
start..start + Tag::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn version_byte_range(&self) -> Range<usize> {
|
|
let start = self.ttc_tag_byte_range().end;
|
|
start..start + MajorMinor::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn num_fonts_byte_range(&self) -> Range<usize> {
|
|
let start = self.version_byte_range().end;
|
|
start..start + u32::RAW_BYTE_LEN
|
|
}
|
|
|
|
pub fn table_directory_offsets_byte_range(&self) -> Range<usize> {
|
|
let start = self.num_fonts_byte_range().end;
|
|
start..start + self.table_directory_offsets_byte_len
|
|
}
|
|
|
|
pub fn dsig_tag_byte_range(&self) -> Option<Range<usize>> {
|
|
let start = self.dsig_tag_byte_start?;
|
|
Some(start..start + u32::RAW_BYTE_LEN)
|
|
}
|
|
|
|
pub fn dsig_length_byte_range(&self) -> Option<Range<usize>> {
|
|
let start = self.dsig_length_byte_start?;
|
|
Some(start..start + u32::RAW_BYTE_LEN)
|
|
}
|
|
|
|
pub fn dsig_offset_byte_range(&self) -> Option<Range<usize>> {
|
|
let start = self.dsig_offset_byte_start?;
|
|
Some(start..start + u32::RAW_BYTE_LEN)
|
|
}
|
|
}
|
|
|
|
impl MinByteRange for TTCHeaderMarker {
|
|
fn min_byte_range(&self) -> Range<usize> {
|
|
0..self.table_directory_offsets_byte_range().end
|
|
}
|
|
}
|
|
|
|
impl<'a> FontRead<'a> for TTCHeader<'a> {
|
|
fn read(data: FontData<'a>) -> Result<Self, ReadError> {
|
|
let mut cursor = data.cursor();
|
|
cursor.advance::<Tag>();
|
|
let version: MajorMinor = cursor.read()?;
|
|
let num_fonts: u32 = cursor.read()?;
|
|
let table_directory_offsets_byte_len = (num_fonts as usize)
|
|
.checked_mul(u32::RAW_BYTE_LEN)
|
|
.ok_or(ReadError::OutOfBounds)?;
|
|
cursor.advance_by(table_directory_offsets_byte_len);
|
|
let dsig_tag_byte_start = version
|
|
.compatible((2u16, 0u16))
|
|
.then(|| cursor.position())
|
|
.transpose()?;
|
|
version
|
|
.compatible((2u16, 0u16))
|
|
.then(|| cursor.advance::<u32>());
|
|
let dsig_length_byte_start = version
|
|
.compatible((2u16, 0u16))
|
|
.then(|| cursor.position())
|
|
.transpose()?;
|
|
version
|
|
.compatible((2u16, 0u16))
|
|
.then(|| cursor.advance::<u32>());
|
|
let dsig_offset_byte_start = version
|
|
.compatible((2u16, 0u16))
|
|
.then(|| cursor.position())
|
|
.transpose()?;
|
|
version
|
|
.compatible((2u16, 0u16))
|
|
.then(|| cursor.advance::<u32>());
|
|
cursor.finish(TTCHeaderMarker {
|
|
table_directory_offsets_byte_len,
|
|
dsig_tag_byte_start,
|
|
dsig_length_byte_start,
|
|
dsig_offset_byte_start,
|
|
})
|
|
}
|
|
}
|
|
|
|
/// [TTC Header](https://learn.microsoft.com/en-us/typography/opentype/spec/otff#ttc-header)
|
|
pub type TTCHeader<'a> = TableRef<'a, TTCHeaderMarker>;
|
|
|
|
#[allow(clippy::needless_lifetimes)]
|
|
impl<'a> TTCHeader<'a> {
|
|
/// Font Collection ID string: \"ttcf\"
|
|
pub fn ttc_tag(&self) -> Tag {
|
|
let range = self.shape.ttc_tag_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
/// Major/minor version of the TTC Header
|
|
pub fn version(&self) -> MajorMinor {
|
|
let range = self.shape.version_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
/// Number of fonts in TTC
|
|
pub fn num_fonts(&self) -> u32 {
|
|
let range = self.shape.num_fonts_byte_range();
|
|
self.data.read_at(range.start).unwrap()
|
|
}
|
|
|
|
/// Array of offsets to the TableDirectory for each font from the beginning of the file
|
|
pub fn table_directory_offsets(&self) -> &'a [BigEndian<u32>] {
|
|
let range = self.shape.table_directory_offsets_byte_range();
|
|
self.data.read_array(range).unwrap()
|
|
}
|
|
|
|
/// Tag indicating that a DSIG table exists, 0x44534947 ('DSIG') (null if no signature)
|
|
pub fn dsig_tag(&self) -> Option<u32> {
|
|
let range = self.shape.dsig_tag_byte_range()?;
|
|
Some(self.data.read_at(range.start).unwrap())
|
|
}
|
|
|
|
/// The length (in bytes) of the DSIG table (null if no signature)
|
|
pub fn dsig_length(&self) -> Option<u32> {
|
|
let range = self.shape.dsig_length_byte_range()?;
|
|
Some(self.data.read_at(range.start).unwrap())
|
|
}
|
|
|
|
/// The offset (in bytes) of the DSIG table from the beginning of the TTC file (null if no signature)
|
|
pub fn dsig_offset(&self) -> Option<u32> {
|
|
let range = self.shape.dsig_offset_byte_range()?;
|
|
Some(self.data.read_at(range.start).unwrap())
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
impl<'a> SomeTable<'a> for TTCHeader<'a> {
|
|
fn type_name(&self) -> &str {
|
|
"TTCHeader"
|
|
}
|
|
fn get_field(&self, idx: usize) -> Option<Field<'a>> {
|
|
let version = self.version();
|
|
match idx {
|
|
0usize => Some(Field::new("ttc_tag", self.ttc_tag())),
|
|
1usize => Some(Field::new("version", self.version())),
|
|
2usize => Some(Field::new("num_fonts", self.num_fonts())),
|
|
3usize => Some(Field::new(
|
|
"table_directory_offsets",
|
|
self.table_directory_offsets(),
|
|
)),
|
|
4usize if version.compatible((2u16, 0u16)) => {
|
|
Some(Field::new("dsig_tag", self.dsig_tag().unwrap()))
|
|
}
|
|
5usize if version.compatible((2u16, 0u16)) => {
|
|
Some(Field::new("dsig_length", self.dsig_length().unwrap()))
|
|
}
|
|
6usize if version.compatible((2u16, 0u16)) => {
|
|
Some(Field::new("dsig_offset", self.dsig_offset().unwrap()))
|
|
}
|
|
_ => None,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(feature = "experimental_traverse")]
|
|
#[allow(clippy::needless_lifetimes)]
|
|
impl<'a> std::fmt::Debug for TTCHeader<'a> {
|
|
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
|
|
(self as &dyn SomeTable<'a>).fmt(f)
|
|
}
|
|
}
|