Change of vterm handling logic on backend chardev input event (#40)

[lunaix-os.git] / lunaix-os / kernel / tty / tty.c

diff --git a/lunaix-os/kernel/tty/tty.c b/lunaix-os/kernel/tty/tty.c
deleted file mode 100644 (file)
index 4164239..0000000
--- a/lunaix-os/kernel/tty/tty.c
+++ /dev/null
@@ -1,156 +0,0 @@
-#include <hal/io.h>
-#include <klibc/string.h>
-#include <lunaix/common.h>
-#include <lunaix/tty/tty.h>
-#include <stdint.h>
-
-#define TTY_WIDTH 80
-#define TTY_HEIGHT 25
-
-static vga_attribute* tty_vga_buffer = (vga_attribute*)VGA_BUFFER_PADDR;
-
-static vga_attribute tty_theme_color = VGA_COLOR_BLACK;
-
-static uint32_t tty_x = 0;
-static uint32_t tty_y = 0;
-
-void
-tty_init(void* vga_buf)
-{
-    tty_vga_buffer = (vga_attribute*)vga_buf;
-    tty_clear();
-
-    io_outb(0x3D4, 0x0A);
-    io_outb(0x3D5, (io_inb(0x3D5) & 0xC0) | 13);
-
-    io_outb(0x3D4, 0x0B);
-    io_outb(0x3D5, (io_inb(0x3D5) & 0xE0) | 15);
-}
-
-void
-tty_set_buffer(void* vga_buf)
-{
-    tty_vga_buffer = (vga_attribute*)vga_buf;
-}
-
-void
-tty_set_theme(vga_attribute fg, vga_attribute bg)
-{
-    tty_theme_color = (bg << 4 | fg) << 8;
-}
-
-void
-tty_put_char(char chr)
-{
-    switch (chr) {
-        case '\t':
-            tty_x += 4;
-            break;
-        case '\n':
-            tty_y++;
-            // fall through
-        case '\r':
-            tty_x = 0;
-            break;
-        case '\x08':
-            tty_x = tty_x ? tty_x - 1 : 0;
-            *(tty_vga_buffer + tty_x + tty_y * TTY_WIDTH) =
-              (tty_theme_color | 0x20);
-            break;
-        default:
-            *(tty_vga_buffer + tty_x + tty_y * TTY_WIDTH) =
-              (tty_theme_color | chr);
-            tty_x++;
-            break;
-    }
-
-    if (tty_x >= TTY_WIDTH) {
-        tty_x = 0;
-        tty_y++;
-    }
-    if (tty_y >= TTY_HEIGHT) {
-        tty_scroll_up();
-    }
-}
-
-void
-tty_sync_cursor()
-{
-    tty_set_cursor(tty_x, tty_y);
-}
-
-void
-tty_set_cursor(uint8_t x, uint8_t y)
-{
-    if (x >= TTY_WIDTH || y >= TTY_HEIGHT) {
-        x = y = 0;
-    }
-    uint32_t pos = y * TTY_WIDTH + x;
-    io_outb(0x3D4, 14);
-    io_outb(0x3D5, pos / 256);
-    io_outb(0x3D4, 15);
-    io_outb(0x3D5, pos % 256);
-}
-
-void
-tty_put_str(char* str)
-{
-    while (*str != '\0') {
-        tty_put_char(*str);
-        str++;
-    }
-    // FIXME: This does not work in user mode.
-    // Work around:
-    //  1. (Easy) Define an IO Permission bitmap in TSS
-    //  2. (More effort) Mount onto file system. (/dev/tty)
-    // tty_sync_cursor();
-}
-
-void
-tty_scroll_up()
-{
-    size_t last_line = TTY_WIDTH * (TTY_HEIGHT - 1);
-    memcpy(tty_vga_buffer, tty_vga_buffer + TTY_WIDTH, last_line * 2);
-    for (size_t i = 0; i < TTY_WIDTH; i++) {
-        *(tty_vga_buffer + i + last_line) = tty_theme_color;
-    }
-    tty_y = tty_y == 0 ? 0 : TTY_HEIGHT - 1;
-}
-
-void
-tty_clear()
-{
-    for (uint32_t i = 0; i < TTY_WIDTH * TTY_HEIGHT; i++) {
-        *(tty_vga_buffer + i) = tty_theme_color;
-    }
-    tty_x = 0;
-    tty_y = 0;
-}
-
-void
-tty_clear_line(unsigned int y)
-{
-    for (size_t i = 0; i < TTY_WIDTH; i++) {
-        *(tty_vga_buffer + i + y * TTY_WIDTH) = tty_theme_color;
-    }
-}
-
-void
-tty_set_cpos(unsigned int x, unsigned int y)
-{
-    tty_x = x % TTY_WIDTH;
-    tty_y = y % TTY_HEIGHT;
-}
-
-void
-tty_get_cpos(unsigned int* x, unsigned int* y)
-{
-    *x = tty_x;
-    *y = tty_y;
-}
-
-vga_attribute
-tty_get_theme()
-{
-    return tty_theme_color;
-}
\ No newline at end of file