christoph/lecture-operating-system-development
1
Fork 0
Code Activity

use stringview in cga

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

23
c_os/devices/CGA.cc
View File

@ -17,9 +17,9 @@
const IOport CGA::index_port(0x3d4);
const IOport CGA::data_port(0x3d5);
bse::span<CGA::cga_char_t, CGA::ROWS * CGA::COLUMNS> CGA::SCREEN{reinterpret_cast<CGA::cga_char_t*>(0xb8000U)};
bse::span<CGA::cga_line_t, CGA::ROWS> CGA::SCREEN_ROWS{reinterpret_cast<CGA::cga_line_t*>(0xb8000U)};
CGA::cga_page_t* CGA::SCREEN_PAGE {reinterpret_cast<CGA::cga_page_t*>(0xb8000U)};
const bse::span<CGA::cga_char_t, CGA::ROWS * CGA::COLUMNS> CGA::SCREEN{reinterpret_cast<CGA::cga_char_t*>(0xb8000U)};
const bse::span<CGA::cga_line_t, CGA::ROWS> CGA::SCREEN_ROWS{reinterpret_cast<CGA::cga_line_t*>(0xb8000U)};
CGA::cga_page_t* const CGA::SCREEN_PAGE {reinterpret_cast<CGA::cga_page_t*>(0xb8000U)};
/*****************************************************************************
* Methode: CGA::setpos *
@ -86,7 +86,7 @@ void CGA::show(unsigned int x, unsigned int y, char character, unsigned char att
return;
}
cga_char_t* pos= SCREEN[x + y * COLUMNS];
cga_char_t* pos = SCREEN[x + y * COLUMNS];
pos->cga_char = character;
pos->cga_attribute = attrib;
}
@ -98,11 +98,11 @@ void CGA::show(unsigned int x, unsigned int y, char character, unsigned char att
* '\n' fuer Zeilenvorschub. *
* *
* Parameter: *
* string Auszugebende Zeichenkette *
* substring Auszugebende Zeichenkette *
* n Laenger der Zeichenkette *
* attrib Attributbyte fuer alle Zeichen der Zeichenkette *
*****************************************************************************/
void CGA::print(const char* string, unsigned int n, unsigned char attrib) const {
void CGA::print(const bse::string_view string, unsigned char attrib) const {
/* Hier muess Code eingefuegt werden */
@ -110,8 +110,7 @@ void CGA::print(const char* string, unsigned int n, unsigned char attrib) const
unsigned int cursor_y = 0; // Don't poll registers every stroke
getpos(cursor_x, cursor_y);
for (int byte = 0; byte < n; ++byte) {
char current = *(string + byte);
for (char current : string) {
if (current == '\n') {
cursor_x = 0;
cursor_y = cursor_y + 1;
@ -149,14 +148,6 @@ void CGA::print(const char* string, unsigned int n, unsigned char attrib) const
setpos(cursor_x, cursor_y);
}
void CGA::print(const bse::string& string, const unsigned int n, const unsigned char attrib) const {
print(static_cast<const char*>(string), n, attrib);
}
void CGA::print(const bse::string& string, const unsigned char attrib) const {
print(static_cast<const char*>(string), string.size(), attrib);
}
/*****************************************************************************
* Methode: CGA::scrollup *
*---------------------------------------------------------------------------*