os-k/kaleid/kernel/io/term.c

//----------------------------------------------------------------------------//
//                           GNU GPL OS/K                                     //
//                                                                            //
//  Authors:    spectral`                                                     //
//              NeoX                                                          //
//                                                                            //
//  Desc:       Early terminal functions                                      //
//----------------------------------------------------------------------------//

#include <kaleid.h>

extern void       VGA_Init(void);
extern Terminal_t VGA_Terminal;

//
// Initialize standard output
//
void InitTerms(void)
{
    KalAssert(!GetStdOut() && !GetStdDbg());

    VGA_Init();

    // vgaTerm.initDone = INITOK;

    SetStdDbg(&VGA_Terminal);
    SetStdOut(&VGA_Terminal);

    ClearTerm(GetStdOut());
}

//
// Fill terminal with spaces
//
error_t ClearTerm(Terminal_t *term)
{
    error_t retcode;

    if (term == NULL) return EINVAL;
    KalAssert(term->initDone == INITOK);

    AquireLock(&term->lock);
    retcode = term->ClearTermUnlocked(term);
    ReleaseLock(&term->lock);

    return retcode;
}

//
// Change the color code
//
error_t ChTermColor(Terminal_t *term, TermColor_t fgColor, TermColor_t bgColor)
{
    if (fgColor > KTERM_COLOR_WHITE || bgColor > KTERM_COLOR_WHITE)
        return EINVAL;

    if (term == NULL)
        return EINVAL;

    AquireLock(&term->lock);

    term->fgColor = fgColor;
    term->bgColor = bgColor;

    ReleaseLock(&term->lock);

    return EOK;
}

//
// Write a single character on the terminal
//
error_t PutOnTerm(Terminal_t *term, char ch)
{
    error_t retcode;

    if (term == NULL) return EINVAL;
    KalAssert(term->initDone == INITOK);

    AquireLock(&term->lock);
    retcode = term->PutOnTermUnlocked(term, ch);
    ReleaseLock(&term->lock);

    return retcode;
}

//
// Print string on terminal
//
error_t PrintOnTerm(Terminal_t *term, const char *str)
{
    error_t retcode = EOK;

    if (term == NULL) return EINVAL;
    KalAssert(term->initDone == INITOK);

    AquireLock(&term->lock);
    while (*str && retcode == EOK) {
        retcode = term->PutOnTermUnlocked(term, *str++);
    }
    ReleaseLock(&term->lock);

    return retcode;
}