1207 lines
31 KiB
C
1207 lines
31 KiB
C
#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <lib/term.h>
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#include <lib/real.h>
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#include <lib/image.h>
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#include <lib/blib.h>
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#include <lib/gterm.h>
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#include <drivers/vga_textmode.h>
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#include <lib/print.h>
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#include <mm/pmm.h>
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extern void reset_term(void);
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bool early_term = false;
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void term_deinit(void) {
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switch (term_backend) {
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case VBE:
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gterm_deinit();
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}
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term_notready();
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}
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void term_vbe(size_t width, size_t height) {
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term_notready();
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if (quiet || allocations_disallowed) {
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return;
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}
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if (!gterm_init(&term_rows, &term_cols, width, height)) {
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#if bios == 1
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// Failed to set VBE properly, default to text mode
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term_textmode();
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#endif
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return;
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}
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term_reinit();
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raw_putchar = gterm_putchar;
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clear = gterm_clear;
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enable_cursor = gterm_enable_cursor;
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disable_cursor = gterm_disable_cursor;
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set_cursor_pos = gterm_set_cursor_pos;
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get_cursor_pos = gterm_get_cursor_pos;
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set_text_fg = gterm_set_text_fg;
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set_text_bg = gterm_set_text_bg;
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set_text_fg_bright = gterm_set_text_fg_bright;
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set_text_bg_bright = gterm_set_text_bg_bright;
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set_text_fg_default = gterm_set_text_fg_default;
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set_text_bg_default = gterm_set_text_bg_default;
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scroll_disable = gterm_scroll_disable;
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scroll_enable = gterm_scroll_enable;
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term_move_character = gterm_move_character;
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term_scroll = gterm_scroll;
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term_revscroll = gterm_revscroll;
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term_swap_palette = gterm_swap_palette;
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term_save_state = gterm_save_state;
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term_restore_state = gterm_restore_state;
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term_double_buffer_flush = gterm_double_buffer_flush;
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term_context_size = gterm_context_size;
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term_context_save = gterm_context_save;
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term_context_restore = gterm_context_restore;
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term_full_refresh = gterm_full_refresh;
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term_backend = VBE;
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}
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// Tries to implement this standard for terminfo
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// https://man7.org/linux/man-pages/man4/console_codes.4.html
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no_unwind int current_video_mode = -1;
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int term_backend = NOT_READY;
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size_t term_rows, term_cols;
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bool term_runtime = false;
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static void notready_raw_putchar(uint8_t c) {
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(void)c;
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}
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static void notready_clear(bool move) {
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(void)move;
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}
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static void notready_void(void) {}
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static void notready_set_cursor_pos(size_t x, size_t y) {
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(void)x; (void)y;
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}
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static void notready_get_cursor_pos(size_t *x, size_t *y) {
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*x = 0;
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*y = 0;
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}
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static void notready_size_t(size_t n) {
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(void)n;
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}
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static bool notready_disable(void) {
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return false;
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}
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static void notready_move_character(size_t a, size_t b, size_t c, size_t d) {
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(void)a; (void)b; (void)c; (void)d;
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}
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static uint64_t notready_context_size(void) {
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return 0;
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}
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static void notready_uint64_t(uint64_t n) {
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(void)n;
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}
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void term_notready(void) {
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term_backend = NOT_READY;
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raw_putchar = notready_raw_putchar;
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clear = notready_clear;
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enable_cursor = notready_void;
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disable_cursor = notready_disable;
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set_cursor_pos = notready_set_cursor_pos;
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get_cursor_pos = notready_get_cursor_pos;
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set_text_fg = notready_size_t;
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set_text_bg = notready_size_t;
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set_text_fg_bright = notready_size_t;
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set_text_bg_bright = notready_size_t;
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set_text_fg_default = notready_void;
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set_text_bg_default = notready_void;
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scroll_disable = notready_disable;
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scroll_enable = notready_void;
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term_move_character = notready_move_character;
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term_scroll = notready_void;
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term_revscroll = notready_void;
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term_swap_palette = notready_void;
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term_save_state = notready_void;
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term_restore_state = notready_void;
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term_double_buffer_flush = notready_void;
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term_context_size = notready_context_size;
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term_context_save = notready_uint64_t;
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term_context_restore = notready_uint64_t;
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term_full_refresh = notready_void;
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term_rows = 100;
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term_cols = 100;
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}
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#if bios == 1
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void fallback_raw_putchar(uint8_t c) {
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struct rm_regs r = {0};
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r.eax = 0x0e00 | c;
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rm_int(0x10, &r, &r);
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}
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void fallback_clear(bool move) {
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(void)move;
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struct rm_regs r = {0};
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rm_int(0x11, &r, &r);
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switch ((r.eax >> 4) & 3) {
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case 0:
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r.eax = 3;
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break;
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case 1:
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r.eax = 1;
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break;
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case 2:
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r.eax = 3;
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break;
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case 3:
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r.eax = 7;
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break;
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}
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rm_int(0x10, &r, &r);
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}
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void fallback_set_cursor_pos(size_t x, size_t y) {
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struct rm_regs r = {0};
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r.eax = 0x0200;
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r.ebx = 0;
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r.edx = (y << 8) + x;
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rm_int(0x10, &r, &r);
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}
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void fallback_get_cursor_pos(size_t *x, size_t *y) {
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struct rm_regs r = {0};
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r.eax = 0x0300;
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r.ebx = 0;
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rm_int(0x10, &r, &r);
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*x = r.edx & 0xff;
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*y = r.edx >> 8;
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}
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#elif uefi == 1
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static int cursor_x = 0, cursor_y = 0;
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void fallback_raw_putchar(uint8_t c) {
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CHAR16 string[2];
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string[0] = c;
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string[1] = 0;
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gST->ConOut->OutputString(gST->ConOut, string);
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switch (c) {
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case 0x08:
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if (cursor_x > 0)
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cursor_x--;
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break;
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case 0x0A:
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cursor_x = 0;
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break;
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case 0x0D:
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if (cursor_y < 24)
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cursor_y++;
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break;
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default:
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if (++cursor_x > 80) {
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cursor_x = 0;
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if (cursor_y < 24)
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cursor_y++;
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}
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}
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}
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void fallback_clear(bool move) {
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(void)move;
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gST->ConOut->ClearScreen(gST->ConOut);
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cursor_x = cursor_y = 0;
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}
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void fallback_set_cursor_pos(size_t x, size_t y) {
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if (x >= 80 || y >= 25)
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return;
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gST->ConOut->SetCursorPosition(gST->ConOut, x, y);
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cursor_x = x;
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cursor_y = y;
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}
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void fallback_get_cursor_pos(size_t *x, size_t *y) {
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*x = cursor_x;
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*y = cursor_y;
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}
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#endif
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void term_fallback(void) {
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#if uefi == 1
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if (!efi_boot_services_exited) {
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gST->ConOut->Reset(gST->ConOut, false);
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gST->ConOut->SetMode(gST->ConOut, 0);
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cursor_x = cursor_y = 0;
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#elif bios == 1
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fallback_clear(true);
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#endif
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term_notready();
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raw_putchar = fallback_raw_putchar;
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clear = fallback_clear;
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set_cursor_pos = fallback_set_cursor_pos;
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get_cursor_pos = fallback_get_cursor_pos;
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term_backend = FALLBACK;
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#if uefi == 1
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}
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#endif
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}
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void (*raw_putchar)(uint8_t c);
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void (*clear)(bool move);
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void (*enable_cursor)(void);
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bool (*disable_cursor)(void);
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void (*set_cursor_pos)(size_t x, size_t y);
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void (*get_cursor_pos)(size_t *x, size_t *y);
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void (*set_text_fg)(size_t fg);
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void (*set_text_bg)(size_t bg);
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void (*set_text_fg_bright)(size_t fg);
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void (*set_text_bg_bright)(size_t bg);
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void (*set_text_fg_default)(void);
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void (*set_text_bg_default)(void);
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bool (*scroll_disable)(void);
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void (*scroll_enable)(void);
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void (*term_move_character)(size_t new_x, size_t new_y, size_t old_x, size_t old_y);
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void (*term_scroll)(void);
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void (*term_revscroll)(void);
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void (*term_swap_palette)(void);
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void (*term_save_state)(void);
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void (*term_restore_state)(void);
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void (*term_double_buffer_flush)(void);
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uint64_t (*term_context_size)(void);
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void (*term_context_save)(uint64_t ptr);
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void (*term_context_restore)(uint64_t ptr);
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void (*term_full_refresh)(void);
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void (*term_callback)(uint64_t, uint64_t, uint64_t, uint64_t) = NULL;
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struct term_context term_context;
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#define escape_offset term_context.escape_offset
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#define control_sequence term_context.control_sequence
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#define csi term_context.csi
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#define escape term_context.escape
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#define rrr term_context.rrr
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#define discard_next term_context.discard_next
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#define bold term_context.bold
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#define reverse_video term_context.reverse_video
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#define dec_private term_context.dec_private
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#define esc_values term_context.esc_values
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#define esc_values_i term_context.esc_values_i
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#define saved_cursor_x term_context.saved_cursor_x
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#define saved_cursor_y term_context.saved_cursor_y
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#define current_primary term_context.current_primary
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#define insert_mode term_context.insert_mode
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#define scroll_top_margin term_context.scroll_top_margin
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#define scroll_bottom_margin term_context.scroll_bottom_margin
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#define current_charset term_context.current_charset
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#define charsets term_context.charsets
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#define g_select term_context.g_select
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#define saved_state_bold term_context.saved_state_bold
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#define saved_state_reverse_video term_context.saved_state_reverse_video
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#define saved_state_current_charset term_context.saved_state_current_charset
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#define saved_state_current_primary term_context.saved_state_current_primary
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#define CHARSET_DEFAULT 0
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#define CHARSET_DEC_SPECIAL 1
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void term_reinit(void) {
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escape_offset = 0;
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control_sequence = false;
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csi = false;
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escape = false;
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rrr = false;
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discard_next = false;
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bold = false;
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reverse_video = false;
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dec_private = false;
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esc_values_i = 0;
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saved_cursor_x = 0;
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saved_cursor_y = 0;
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current_primary = (size_t)-1;
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insert_mode = false;
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scroll_top_margin = 0;
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scroll_bottom_margin = term_rows;
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current_charset = 0;
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g_select = 0;
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charsets[0] = CHARSET_DEFAULT;
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charsets[1] = CHARSET_DEC_SPECIAL;
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term_autoflush = true;
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}
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#if bios == 1
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void term_textmode(void) {
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term_notready();
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if (quiet || allocations_disallowed) {
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return;
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}
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init_vga_textmode(&term_rows, &term_cols, true);
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term_reinit();
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raw_putchar = text_putchar;
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clear = text_clear;
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enable_cursor = text_enable_cursor;
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disable_cursor = text_disable_cursor;
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set_cursor_pos = text_set_cursor_pos;
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get_cursor_pos = text_get_cursor_pos;
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set_text_fg = text_set_text_fg;
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set_text_bg = text_set_text_bg;
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set_text_fg_bright = text_set_text_fg_bright;
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set_text_bg_bright = text_set_text_bg_bright;
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set_text_fg_default = text_set_text_fg_default;
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set_text_bg_default = text_set_text_bg_default;
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scroll_disable = text_scroll_disable;
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scroll_enable = text_scroll_enable;
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term_move_character = text_move_character;
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term_scroll = text_scroll;
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term_revscroll = text_revscroll;
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term_swap_palette = text_swap_palette;
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term_save_state = text_save_state;
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term_restore_state = text_restore_state;
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term_double_buffer_flush = text_double_buffer_flush;
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term_context_size = text_context_size;
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term_context_save = text_context_save;
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term_context_restore = text_context_restore;
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term_full_refresh = text_full_refresh;
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term_backend = TEXTMODE;
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}
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#endif
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static uint64_t context_size(void) {
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uint64_t ret = 0;
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ret += sizeof(struct term_context);
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ret += term_context_size();
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return ret;
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}
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static void context_save(uint64_t ptr) {
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memcpy32to64(ptr, (uint64_t)(uintptr_t)&term_context, sizeof(struct term_context));
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ptr += sizeof(struct term_context);
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term_context_save(ptr);
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}
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static void context_restore(uint64_t ptr) {
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memcpy32to64((uint64_t)(uintptr_t)&term_context, ptr, sizeof(struct term_context));
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ptr += sizeof(struct term_context);
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term_context_restore(ptr);
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}
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#if defined (__i386__)
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#define TERM_XFER_CHUNK 8192
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static uint8_t xfer_buf[TERM_XFER_CHUNK];
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#endif
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bool term_autoflush = true;
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void term_write(uint64_t buf, uint64_t count) {
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if (term_backend == NOT_READY)
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return;
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switch (count) {
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case TERM_CTX_SIZE: {
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uint64_t ret = context_size();
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memcpy32to64(buf, (uint64_t)(uintptr_t)&ret, sizeof(uint64_t));
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return;
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}
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case TERM_CTX_SAVE: {
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context_save(buf);
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return;
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}
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case TERM_CTX_RESTORE: {
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context_restore(buf);
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return;
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}
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case TERM_FULL_REFRESH: {
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term_full_refresh();
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return;
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}
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}
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bool native = false;
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#if defined (__x86_64__)
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native = true;
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#endif
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if (!term_runtime || native) {
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const char *s = (const char *)(uintptr_t)buf;
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for (size_t i = 0; i < count; i++)
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term_putchar(s[i]);
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} else {
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#if defined (__i386__)
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while (count != 0) {
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uint64_t chunk;
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if (count > TERM_XFER_CHUNK) {
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chunk = TERM_XFER_CHUNK;
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} else {
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chunk = count;
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}
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memcpy32to64((uint64_t)(uintptr_t)xfer_buf, buf, chunk);
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for (size_t i = 0; i < chunk; i++)
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term_putchar(xfer_buf[i]);
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count -= chunk;
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buf += chunk;
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}
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#endif
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}
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if (term_autoflush) {
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term_double_buffer_flush();
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}
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}
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static void sgr(void) {
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size_t i = 0;
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if (!esc_values_i)
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goto def;
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for (; i < esc_values_i; i++) {
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size_t offset;
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if (esc_values[i] == 0) {
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def:
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if (reverse_video) {
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reverse_video = false;
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term_swap_palette();
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}
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bold = false;
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current_primary = (size_t)-1;
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set_text_bg_default();
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set_text_fg_default();
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continue;
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}
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else if (esc_values[i] == 1) {
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bold = true;
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if (current_primary != (size_t)-1) {
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if (!reverse_video) {
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set_text_fg_bright(current_primary);
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} else {
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set_text_bg_bright(current_primary);
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}
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}
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continue;
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}
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else if (esc_values[i] == 22) {
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bold = false;
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if (current_primary != (size_t)-1) {
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if (!reverse_video) {
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set_text_fg(current_primary);
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} else {
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set_text_bg(current_primary);
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}
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}
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continue;
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}
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|
|
else if (esc_values[i] >= 30 && esc_values[i] <= 37) {
|
|
offset = 30;
|
|
current_primary = esc_values[i] - offset;
|
|
|
|
if (reverse_video) {
|
|
goto set_bg;
|
|
}
|
|
|
|
set_fg:
|
|
if (bold && !reverse_video) {
|
|
set_text_fg_bright(esc_values[i] - offset);
|
|
} else {
|
|
set_text_fg(esc_values[i] - offset);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
else if (esc_values[i] >= 40 && esc_values[i] <= 47) {
|
|
offset = 40;
|
|
if (reverse_video) {
|
|
goto set_fg;
|
|
}
|
|
|
|
set_bg:
|
|
if (bold && reverse_video) {
|
|
set_text_bg_bright(esc_values[i] - offset);
|
|
} else {
|
|
set_text_bg(esc_values[i] - offset);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
else if (esc_values[i] >= 90 && esc_values[i] <= 97) {
|
|
offset = 90;
|
|
current_primary = esc_values[i] - offset;
|
|
|
|
if (reverse_video) {
|
|
goto set_bg_bright;
|
|
}
|
|
|
|
set_fg_bright:
|
|
set_text_fg_bright(esc_values[i] - offset);
|
|
continue;
|
|
}
|
|
|
|
else if (esc_values[i] >= 100 && esc_values[i] <= 107) {
|
|
offset = 100;
|
|
if (reverse_video) {
|
|
goto set_fg_bright;
|
|
}
|
|
|
|
set_bg_bright:
|
|
set_text_bg_bright(esc_values[i] - offset);
|
|
continue;
|
|
}
|
|
|
|
else if (esc_values[i] == 39) {
|
|
current_primary = (size_t)-1;
|
|
|
|
if (reverse_video) {
|
|
term_swap_palette();
|
|
}
|
|
|
|
set_text_fg_default();
|
|
|
|
if (reverse_video) {
|
|
term_swap_palette();
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
else if (esc_values[i] == 49) {
|
|
if (reverse_video) {
|
|
term_swap_palette();
|
|
}
|
|
|
|
set_text_bg_default();
|
|
|
|
if (reverse_video) {
|
|
term_swap_palette();
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
else if (esc_values[i] == 7) {
|
|
if (!reverse_video) {
|
|
reverse_video = true;
|
|
term_swap_palette();
|
|
}
|
|
continue;
|
|
}
|
|
|
|
else if (esc_values[i] == 27) {
|
|
if (reverse_video) {
|
|
reverse_video = false;
|
|
term_swap_palette();
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void dec_private_parse(uint8_t c) {
|
|
dec_private = false;
|
|
|
|
if (esc_values_i == 0) {
|
|
return;
|
|
}
|
|
|
|
bool set;
|
|
|
|
switch (c) {
|
|
case 'h':
|
|
set = true; break;
|
|
case 'l':
|
|
set = false; break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
switch (esc_values[0]) {
|
|
case 25: {
|
|
if (set) {
|
|
enable_cursor();
|
|
} else {
|
|
disable_cursor();
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_DEC, esc_values_i, (uintptr_t)esc_values, c);
|
|
}
|
|
}
|
|
|
|
static void linux_private_parse(void) {
|
|
if (esc_values_i == 0) {
|
|
return;
|
|
}
|
|
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_LINUX, esc_values_i, (uintptr_t)esc_values, 0);
|
|
}
|
|
}
|
|
|
|
static void mode_toggle(uint8_t c) {
|
|
if (esc_values_i == 0) {
|
|
return;
|
|
}
|
|
|
|
bool set;
|
|
|
|
switch (c) {
|
|
case 'h':
|
|
set = true; break;
|
|
case 'l':
|
|
set = false; break;
|
|
default:
|
|
return;
|
|
}
|
|
|
|
switch (esc_values[0]) {
|
|
case 4:
|
|
insert_mode = set; return;
|
|
}
|
|
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_MODE, esc_values_i, (uintptr_t)esc_values, c);
|
|
}
|
|
}
|
|
|
|
static void control_sequence_parse(uint8_t c) {
|
|
if (escape_offset == 2) {
|
|
switch (c) {
|
|
case '[':
|
|
discard_next = true;
|
|
goto cleanup;
|
|
case '?':
|
|
dec_private = true;
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (c >= '0' && c <= '9') {
|
|
if (esc_values_i == MAX_ESC_VALUES) {
|
|
return;
|
|
}
|
|
rrr = true;
|
|
esc_values[esc_values_i] *= 10;
|
|
esc_values[esc_values_i] += c - '0';
|
|
return;
|
|
}
|
|
|
|
if (rrr == true) {
|
|
esc_values_i++;
|
|
rrr = false;
|
|
if (c == ';')
|
|
return;
|
|
} else if (c == ';') {
|
|
if (esc_values_i == MAX_ESC_VALUES) {
|
|
return;
|
|
}
|
|
esc_values[esc_values_i] = 0;
|
|
esc_values_i++;
|
|
return;
|
|
}
|
|
|
|
size_t esc_default;
|
|
switch (c) {
|
|
case 'J': case 'K': case 'q':
|
|
esc_default = 0; break;
|
|
default:
|
|
esc_default = 1; break;
|
|
}
|
|
|
|
for (size_t i = esc_values_i; i < MAX_ESC_VALUES; i++) {
|
|
esc_values[i] = esc_default;
|
|
}
|
|
|
|
if (dec_private == true) {
|
|
dec_private_parse(c);
|
|
goto cleanup;
|
|
}
|
|
|
|
bool r = scroll_disable();
|
|
size_t x, y;
|
|
get_cursor_pos(&x, &y);
|
|
|
|
switch (c) {
|
|
case 'F':
|
|
x = 0;
|
|
// FALLTHRU
|
|
case 'A': {
|
|
if (esc_values[0] > y)
|
|
esc_values[0] = y;
|
|
size_t orig_y = y;
|
|
size_t dest_y = y - esc_values[0];
|
|
bool will_be_in_scroll_region = false;
|
|
if ((scroll_top_margin >= dest_y && scroll_top_margin <= orig_y)
|
|
|| (scroll_bottom_margin >= dest_y && scroll_bottom_margin <= orig_y)) {
|
|
will_be_in_scroll_region = true;
|
|
}
|
|
if (will_be_in_scroll_region && dest_y < scroll_top_margin) {
|
|
dest_y = scroll_top_margin;
|
|
}
|
|
set_cursor_pos(x, dest_y);
|
|
break;
|
|
}
|
|
case 'E':
|
|
x = 0;
|
|
// FALLTHRU
|
|
case 'e':
|
|
case 'B': {
|
|
if (y + esc_values[0] > term_rows - 1)
|
|
esc_values[0] = (term_rows - 1) - y;
|
|
size_t orig_y = y;
|
|
size_t dest_y = y + esc_values[0];
|
|
bool will_be_in_scroll_region = false;
|
|
if ((scroll_top_margin >= orig_y && scroll_top_margin <= dest_y)
|
|
|| (scroll_bottom_margin >= orig_y && scroll_bottom_margin <= dest_y)) {
|
|
will_be_in_scroll_region = true;
|
|
}
|
|
if (will_be_in_scroll_region && dest_y >= scroll_bottom_margin) {
|
|
dest_y = scroll_bottom_margin - 1;
|
|
}
|
|
set_cursor_pos(x, dest_y);
|
|
break;
|
|
}
|
|
case 'a':
|
|
case 'C':
|
|
if (x + esc_values[0] > term_cols - 1)
|
|
esc_values[0] = (term_cols - 1) - x;
|
|
set_cursor_pos(x + esc_values[0], y);
|
|
break;
|
|
case 'D':
|
|
if (esc_values[0] > x)
|
|
esc_values[0] = x;
|
|
set_cursor_pos(x - esc_values[0], y);
|
|
break;
|
|
case 'c':
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_PRIVATE_ID, 0, 0, 0);
|
|
}
|
|
break;
|
|
case 'd':
|
|
esc_values[0] -= 1;
|
|
if (esc_values[0] >= term_rows)
|
|
esc_values[0] = term_rows - 1;
|
|
set_cursor_pos(x, esc_values[0]);
|
|
break;
|
|
case 'G':
|
|
case '`':
|
|
esc_values[0] -= 1;
|
|
if (esc_values[0] >= term_cols)
|
|
esc_values[0] = term_cols - 1;
|
|
set_cursor_pos(esc_values[0], y);
|
|
break;
|
|
case 'H':
|
|
case 'f':
|
|
esc_values[0] -= 1;
|
|
esc_values[1] -= 1;
|
|
if (esc_values[1] >= term_cols)
|
|
esc_values[1] = term_cols - 1;
|
|
if (esc_values[0] >= term_rows)
|
|
esc_values[0] = term_rows - 1;
|
|
set_cursor_pos(esc_values[1], esc_values[0]);
|
|
break;
|
|
case 'n':
|
|
switch (esc_values[0]) {
|
|
case 5:
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_STATUS_REPORT, 0, 0, 0);
|
|
}
|
|
break;
|
|
case 6:
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_POS_REPORT, x + 1, y + 1, 0);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 'q':
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_KBD_LEDS, esc_values[0], 0, 0);
|
|
}
|
|
break;
|
|
case 'J':
|
|
switch (esc_values[0]) {
|
|
case 0: {
|
|
size_t rows_remaining = term_rows - (y + 1);
|
|
size_t cols_diff = term_cols - (x + 1);
|
|
size_t to_clear = rows_remaining * term_cols + cols_diff;
|
|
for (size_t i = 0; i < to_clear; i++) {
|
|
raw_putchar(' ');
|
|
}
|
|
set_cursor_pos(x, y);
|
|
break;
|
|
}
|
|
case 1: {
|
|
set_cursor_pos(0, 0);
|
|
bool b = false;
|
|
for (size_t yc = 0; yc < term_rows; yc++) {
|
|
for (size_t xc = 0; xc < term_cols; xc++) {
|
|
raw_putchar(' ');
|
|
if (xc == x && yc == y) {
|
|
set_cursor_pos(x, y);
|
|
b = true;
|
|
break;
|
|
}
|
|
}
|
|
if (b == true)
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case 2:
|
|
case 3:
|
|
clear(false);
|
|
break;
|
|
}
|
|
break;
|
|
case '@':
|
|
for (size_t i = term_cols - 1; ; i--) {
|
|
term_move_character(i + esc_values[0], y, i, y);
|
|
set_cursor_pos(i, y);
|
|
raw_putchar(' ');
|
|
if (i == x) {
|
|
break;
|
|
}
|
|
}
|
|
set_cursor_pos(x, y);
|
|
break;
|
|
case 'P':
|
|
for (size_t i = x + esc_values[0]; i < term_cols; i++)
|
|
term_move_character(i - esc_values[0], y, i, y);
|
|
set_cursor_pos(term_cols - esc_values[0], y);
|
|
// FALLTHRU
|
|
case 'X':
|
|
for (size_t i = 0; i < esc_values[0]; i++)
|
|
raw_putchar(' ');
|
|
set_cursor_pos(x, y);
|
|
break;
|
|
case 'm':
|
|
sgr();
|
|
break;
|
|
case 's':
|
|
get_cursor_pos(&saved_cursor_x, &saved_cursor_y);
|
|
break;
|
|
case 'u':
|
|
set_cursor_pos(saved_cursor_x, saved_cursor_y);
|
|
break;
|
|
case 'K':
|
|
switch (esc_values[0]) {
|
|
case 0: {
|
|
for (size_t i = x; i < term_cols; i++)
|
|
raw_putchar(' ');
|
|
set_cursor_pos(x, y);
|
|
break;
|
|
}
|
|
case 1: {
|
|
set_cursor_pos(0, y);
|
|
for (size_t i = 0; i < x; i++)
|
|
raw_putchar(' ');
|
|
break;
|
|
}
|
|
case 2: {
|
|
set_cursor_pos(0, y);
|
|
for (size_t i = 0; i < term_cols; i++)
|
|
raw_putchar(' ');
|
|
set_cursor_pos(x, y);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 'r':
|
|
scroll_top_margin = 0;
|
|
scroll_bottom_margin = term_rows;
|
|
if (esc_values_i > 0) {
|
|
scroll_top_margin = esc_values[0] - 1;
|
|
}
|
|
if (esc_values_i > 1) {
|
|
scroll_bottom_margin = esc_values[1];
|
|
}
|
|
if (scroll_top_margin >= term_rows
|
|
|| scroll_bottom_margin > term_rows
|
|
|| scroll_top_margin >= (scroll_bottom_margin - 1)) {
|
|
scroll_top_margin = 0;
|
|
scroll_bottom_margin = term_rows;
|
|
}
|
|
set_cursor_pos(0, 0);
|
|
break;
|
|
case 'l':
|
|
case 'h':
|
|
mode_toggle(c);
|
|
break;
|
|
case ']':
|
|
linux_private_parse();
|
|
break;
|
|
}
|
|
|
|
if (r)
|
|
scroll_enable();
|
|
|
|
cleanup:
|
|
control_sequence = false;
|
|
escape = false;
|
|
}
|
|
|
|
static void restore_state(void) {
|
|
bold = saved_state_bold;
|
|
reverse_video = saved_state_reverse_video;
|
|
current_charset = saved_state_current_charset;
|
|
current_primary = saved_state_current_primary;
|
|
|
|
term_restore_state();
|
|
}
|
|
|
|
static void save_state(void) {
|
|
term_save_state();
|
|
|
|
saved_state_bold = bold;
|
|
saved_state_reverse_video = reverse_video;
|
|
saved_state_current_charset = current_charset;
|
|
saved_state_current_primary = current_primary;
|
|
}
|
|
|
|
static void escape_parse(uint8_t c) {
|
|
escape_offset++;
|
|
|
|
if (control_sequence == true) {
|
|
control_sequence_parse(c);
|
|
return;
|
|
}
|
|
|
|
if (csi == true) {
|
|
csi = false;
|
|
goto is_csi;
|
|
}
|
|
|
|
size_t x, y;
|
|
get_cursor_pos(&x, &y);
|
|
|
|
switch (c) {
|
|
case '[':
|
|
is_csi:
|
|
for (size_t i = 0; i < MAX_ESC_VALUES; i++)
|
|
esc_values[i] = 0;
|
|
esc_values_i = 0;
|
|
rrr = false;
|
|
control_sequence = true;
|
|
return;
|
|
case '7':
|
|
save_state();
|
|
break;
|
|
case '8':
|
|
restore_state();
|
|
break;
|
|
case 'c':
|
|
term_reinit();
|
|
clear(true);
|
|
break;
|
|
case 'D':
|
|
if (y == scroll_bottom_margin - 1) {
|
|
term_scroll();
|
|
set_cursor_pos(x, y);
|
|
} else {
|
|
set_cursor_pos(x, y + 1);
|
|
}
|
|
break;
|
|
case 'E':
|
|
if (y == scroll_bottom_margin - 1) {
|
|
term_scroll();
|
|
set_cursor_pos(0, y);
|
|
} else {
|
|
set_cursor_pos(0, y + 1);
|
|
}
|
|
break;
|
|
case 'M':
|
|
// "Reverse linefeed"
|
|
if (y == scroll_top_margin) {
|
|
term_revscroll();
|
|
set_cursor_pos(0, y);
|
|
} else {
|
|
set_cursor_pos(0, y - 1);
|
|
}
|
|
break;
|
|
case 'Z':
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_PRIVATE_ID, 0, 0, 0);
|
|
}
|
|
break;
|
|
case '(':
|
|
case ')':
|
|
g_select = c - '\'';
|
|
break;
|
|
case '\e':
|
|
if (term_runtime == false) {
|
|
raw_putchar(c);
|
|
}
|
|
break;
|
|
}
|
|
|
|
escape = false;
|
|
}
|
|
|
|
static uint8_t dec_special_to_cp437(uint8_t c) {
|
|
switch (c) {
|
|
case '`': return 0x04;
|
|
case '0': return 0xdb;
|
|
case '-': return 0x18;
|
|
case ',': return 0x1b;
|
|
case '.': return 0x19;
|
|
case 'a': return 0xb1;
|
|
case 'f': return 0xf8;
|
|
case 'g': return 0xf1;
|
|
case 'h': return 0xb0;
|
|
case 'j': return 0xd9;
|
|
case 'k': return 0xbf;
|
|
case 'l': return 0xda;
|
|
case 'm': return 0xc0;
|
|
case 'n': return 0xc5;
|
|
case 'q': return 0xc4;
|
|
case 's': return 0x5f;
|
|
case 't': return 0xc3;
|
|
case 'u': return 0xb4;
|
|
case 'v': return 0xc1;
|
|
case 'w': return 0xc2;
|
|
case 'x': return 0xb3;
|
|
case 'y': return 0xf3;
|
|
case 'z': return 0xf2;
|
|
case '~': return 0xfa;
|
|
case '_': return 0xff;
|
|
case '+': return 0x1a;
|
|
case '{': return 0xe3;
|
|
case '}': return 0x9c;
|
|
}
|
|
|
|
return c;
|
|
}
|
|
|
|
void term_putchar(uint8_t c) {
|
|
if (discard_next || (term_runtime == true && (c == 0x18 || c == 0x1a))) {
|
|
discard_next = false;
|
|
escape = false;
|
|
csi = false;
|
|
control_sequence = false;
|
|
g_select = 0;
|
|
return;
|
|
}
|
|
|
|
if (escape == true) {
|
|
escape_parse(c);
|
|
return;
|
|
}
|
|
|
|
if (g_select) {
|
|
g_select--;
|
|
switch (c) {
|
|
case 'B':
|
|
charsets[g_select] = CHARSET_DEFAULT; break;
|
|
case '0':
|
|
charsets[g_select] = CHARSET_DEC_SPECIAL; break;
|
|
}
|
|
g_select = 0;
|
|
return;
|
|
}
|
|
|
|
size_t x, y;
|
|
get_cursor_pos(&x, &y);
|
|
|
|
switch (c) {
|
|
case 0x00:
|
|
case 0x7f:
|
|
return;
|
|
case 0x9b:
|
|
csi = true;
|
|
// FALLTHRU
|
|
case '\e':
|
|
escape_offset = 0;
|
|
escape = true;
|
|
return;
|
|
case '\t':
|
|
if ((x / TERM_TABSIZE + 1) >= term_cols) {
|
|
set_cursor_pos(term_cols - 1, y);
|
|
return;
|
|
}
|
|
set_cursor_pos((x / TERM_TABSIZE + 1) * TERM_TABSIZE, y);
|
|
return;
|
|
case 0x0b:
|
|
case 0x0c:
|
|
case '\n':
|
|
if (y == scroll_bottom_margin - 1) {
|
|
term_scroll();
|
|
set_cursor_pos(0, y);
|
|
} else {
|
|
set_cursor_pos(0, y + 1);
|
|
}
|
|
return;
|
|
case '\b':
|
|
set_cursor_pos(x - 1, y);
|
|
return;
|
|
case '\r':
|
|
set_cursor_pos(0, y);
|
|
return;
|
|
case '\a':
|
|
// The bell is handled by the kernel
|
|
if (term_callback != NULL) {
|
|
term_callback(TERM_CB_BELL, 0, 0, 0);
|
|
}
|
|
return;
|
|
case 14:
|
|
// Move to G1 set
|
|
current_charset = 1;
|
|
return;
|
|
case 15:
|
|
// Move to G0 set
|
|
current_charset = 0;
|
|
return;
|
|
}
|
|
|
|
if (insert_mode == true) {
|
|
for (size_t i = term_cols - 1; ; i--) {
|
|
term_move_character(i + 1, y, i, y);
|
|
if (i == x) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Translate character set
|
|
switch (charsets[current_charset]) {
|
|
case CHARSET_DEFAULT:
|
|
break;
|
|
case CHARSET_DEC_SPECIAL:
|
|
c = dec_special_to_cp437(c);
|
|
}
|
|
|
|
raw_putchar(c);
|
|
}
|