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Kernel: Font parsing uses Spans now

This commit is contained in:
Bananymous 2023-03-20 13:35:54 +02:00
parent 70f2908056
commit 43f4657566
2 changed files with 9 additions and 8 deletions
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5
kernel/include/kernel/Font.h
View File

@ -1,6 +1,7 @@
#pragma once
#include <BAN/HashMap.h>
#include <BAN/Span.h>
#include <BAN/StringView.h>
namespace Kernel
@ -20,8 +21,8 @@ namespace Kernel
const uint8_t* glyph(uint16_t) const;
private:
static BAN::ErrorOr<Font> parse_psf1(const BAN::Vector<uint8_t>&);
static BAN::ErrorOr<Font> parse_psf2(const BAN::Vector<uint8_t>&);
static BAN::ErrorOr<Font> parse_psf1(const BAN::Span<uint8_t>);
static BAN::ErrorOr<Font> parse_psf2(const BAN::Span<uint8_t>);
private:
BAN::HashMap<uint16_t, uint32_t> m_glyph_offsets;

12
kernel/kernel/Font.cpp
View File

@ -1,5 +1,5 @@
#include <BAN/UTF8.h>
#include <BAN/ScopeGuard.h>
#include <BAN/UTF8.h>
#include <kernel/Font.h>
#include <kernel/Process.h>
@ -23,7 +23,7 @@ namespace Kernel
BAN::Vector<uint8_t> font_data;
TRY(font_data.resize(font_data_size));
memcpy(font_data.data(), &_binary_font_prefs_psf_start, font_data_size);
return parse_psf1(font_data);
return parse_psf1(font_data.span());
}
BAN::ErrorOr<Font> Font::load(BAN::StringView path)
@ -40,16 +40,16 @@ namespace Kernel
return BAN::Error::from_c_string("Font file is too small");
if (file_data[0] == 0x36 && file_data[1] == 0x04)
return TRY(parse_psf1(file_data));
return TRY(parse_psf1(file_data.span()));
if (file_data[0] == 0x72 && file_data[1] == 0xB5 && file_data[2] == 0x4A && file_data[3] == 0x86)
return TRY(parse_psf2(file_data));
return TRY(parse_psf2(file_data.span()));
return BAN::Error::from_c_string("Unsupported font format");
}
BAN::ErrorOr<Font> Font::parse_psf1(const BAN::Vector<uint8_t>& font_data)
BAN::ErrorOr<Font> Font::parse_psf1(const BAN::Span<uint8_t> font_data)
{
if (font_data.size() < 4)
return BAN::Error::from_c_string("Font file is too small");
@ -135,7 +135,7 @@ namespace Kernel
return result;
}
BAN::ErrorOr<Font> Font::parse_psf2(const BAN::Vector<uint8_t>& font_data)
BAN::ErrorOr<Font> Font::parse_psf2(const BAN::Span<uint8_t> font_data)
{
struct PSF2Header
{