christoph/lecture-operating-system-development
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use stringview in cga

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This commit is contained in:
Christoph Urlacher
2022-07-29 14:19:56 +02:00
parent e7aee137f8
commit fa0bfee566
3 changed files with 14 additions and 23 deletions
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11
c_os/devices/CGA.h
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@ -18,6 +18,7 @@
#include "user/lib/Array.h"
#include "user/lib/Span.h"
#include "user/lib/String.h"
#include "user/lib/StringView.h"
class CGA {
private:
@ -77,9 +78,9 @@ public:
bse::array<cga_line_t, ROWS> cga_page;
};
static bse::span<cga_char_t, ROWS * COLUMNS> SCREEN;
static bse::span<cga_line_t, ROWS> SCREEN_ROWS;
static cga_page_t* SCREEN_PAGE; // No span because can't address anything in [0, 1]
static const bse::span<cga_char_t, ROWS * COLUMNS> SCREEN;
static const bse::span<cga_line_t, ROWS> SCREEN_ROWS;
static cga_page_t* const SCREEN_PAGE; // No span because can't address anything in [0, 1]
// Setzen des Cursors in Spalte x und Zeile y.
static void setpos(unsigned int x, unsigned int y);
@ -91,9 +92,7 @@ public:
static void show(unsigned int x, unsigned int y, char character, unsigned char attrib = STD_ATTR);
// Anzeige mehrerer Zeichen ab der aktuellen Cursorposition
void print(const char* string, unsigned int n, unsigned char attrib = STD_ATTR) const;
void print(const bse::string& string, unsigned int n, unsigned char attrib = STD_ATTR) const;
void print(const bse::string& string, unsigned char attrib = STD_ATTR) const;
void print(const bse::string_view substring, unsigned char attrib = STD_ATTR) const;
// Verschiebt den Bildschirminhalt um eine Zeile nach oben.
// Neue Zeile am unteren Bildrand mit Leerzeichen fuellen