+++ /dev/null
-/*
- * Acess2 Virtual Terminal Driver
- */
-#include <common.h>
-#include <fs_devfs.h>
-#include <modules.h>
-#include <tpl_drv_video.h>
-#include <tpl_drv_keyboard.h>
-
-// === CONSTANTS ===
-#define NUM_VTS 4
-#define MAX_INPUT_CHARS 64
-#define VT_SCROLLBACK 1 // 4 Screens of text
-#define DEFAULT_OUTPUT "/Devices/VGA"
-#define DEFAULT_INPUT "/Devices/PS2Keyboard"
-#define DEFAULT_WIDTH 80
-#define DEFAULT_HEIGHT 25
-#define DEFAULT_COLOUR (VT_COL_BLACK|(VT_COL_WHITE<<16))
-
-#define VT_FLAG_HIDECSR 0x01
-
-enum eVT_Modes {
- VT_MODE_TEXT8, // UTF-8 Text Mode (VT100 Emulation)
- VT_MODE_TEXT32, // UTF-32 Text Mode (Acess Native)
- VT_MODE_8BPP, // 256 Colour Mode
- VT_MODE_16BPP, // 16 bit Colour Mode
- VT_MODE_24BPP, // 24 bit Colour Mode
- VT_MODE_32BPP, // 32 bit Colour Mode
- NUM_VT_MODES
-};
-
-// === TYPES ===
-typedef struct {
- int Mode;
- int Flags;
- int Width, Height;
- int ViewPos, WritePos;
- Uint32 CurColour;
- char Name[2];
- int InputRead;
- int InputWrite;
- Uint32 InputBuffer[MAX_INPUT_CHARS];
- union {
- tVT_Char *Text;
- Uint32 *Buffer;
- };
- tVFS_Node Node;
-} tVTerm;
-
-// === PROTOTYPES ===
- int VT_Install(char **Arguments);
-char *VT_ReadDir(tVFS_Node *Node, int Pos);
-tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name);
-Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
-Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer);
- int VT_IOCtl(tVFS_Node *Node, int Id, void *Data);
-void VT_KBCallBack(Uint32 Codepoint);
-void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count);
- int VT_int_ParseEscape(tVTerm *Term, char *Buffer);
-void VT_int_PutChar(tVTerm *Term, Uint32 Ch);
-void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll );
-
-// === CONSTANTS ===
-const Uint16 caVT100Colours[] = {
- VT_COL_BLACK, 0x700, 0x070, 0x770, 0x007, 0x707, 0x077, VT_COL_LTGREY,
- VT_COL_GREY, 0xF00, 0x0F0, 0xFF0, 0x00F, 0xF0F, 0x0FF, VT_COL_WHITE
- };
-
-// === GLOBALS ===
-MODULE_DEFINE(0, 0x0032, VTerm, VT_Install, NULL, NULL);
-tDevFS_Driver gVT_DrvInfo = {
- NULL, "VTerm",
- {
- .Flags = VFS_FFLAG_DIRECTORY,
- .Inode = -1,
- .NumACLs = 0,
- .ReadDir = VT_ReadDir,
- .FindDir = VT_FindDir
- }
-};
-tVTerm gVT_Terminals[NUM_VTS];
-char *gsVT_OutputDevice = NULL;
-char *gsVT_InputDevice = NULL;
- int giVT_OutputDevHandle = -2;
- int giVT_InputDevHandle = -2;
- int giVT_CurrentTerminal = 0;
-
-// === CODE ===
-/**
- * \fn int VT_Install(char **Arguments)
- * \brief Installs the Virtual Terminal Driver
- */
-int VT_Install(char **Arguments)
-{
- char **args = Arguments;
- char *arg;
- int i;
-
- // Scan Arguments
- if(Arguments)
- {
- for( ; (arg = *args); args++ )
- {
- if(arg[0] != '-') continue;
-
- switch(arg[1])
- {
- // Set output device
- case 'o':
- if(args[1] == NULL) break;
- if(gsVT_OutputDevice) free(gsVT_OutputDevice);
- gsVT_OutputDevice = malloc(strlen(args[1])+1);
- strcpy(gsVT_OutputDevice, args[1]);
- args ++;
- break;
-
- // Set input device
- case 'i':
- if(args[1] == NULL) break;
- if(gsVT_InputDevice) free(gsVT_InputDevice);
- gsVT_InputDevice = malloc(strlen(args[1])+1);
- strcpy(gsVT_InputDevice, args[1]);
- args ++;
- break;
-
- }
- }
- }
-
- // Apply Defaults
- if(!gsVT_OutputDevice) gsVT_OutputDevice = DEFAULT_OUTPUT;
- if(!gsVT_InputDevice) gsVT_InputDevice = DEFAULT_INPUT;
-
- LOG("Using '%s' as output", gsVT_OutputDevice);
- LOG("Using '%s' as input", gsVT_InputDevice);
-
- // Create Nodes
- for( i = 0; i < NUM_VTS; i++ )
- {
- gVT_Terminals[i].Mode = VT_MODE_TEXT8;
- gVT_Terminals[i].Flags = 0;
- gVT_Terminals[i].Width = DEFAULT_WIDTH;
- gVT_Terminals[i].Height = DEFAULT_HEIGHT;
- gVT_Terminals[i].CurColour = DEFAULT_COLOUR;
- gVT_Terminals[i].WritePos = 0;
- gVT_Terminals[i].ViewPos = 0;
-
- gVT_Terminals[i].Buffer = malloc( DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK*sizeof(tVT_Char) );
- memset( gVT_Terminals[i].Buffer, 0, DEFAULT_WIDTH*DEFAULT_HEIGHT*VT_SCROLLBACK*sizeof(tVT_Char) );
-
- gVT_Terminals[i].Name[0] = '0'+i;
- gVT_Terminals[i].Name[1] = '\0';
- gVT_Terminals[i].Node.Inode = i;
- gVT_Terminals[i].Node.NumACLs = 0; // Only root can open virtual terminals
-
- gVT_Terminals[i].Node.Read = VT_Read;
- gVT_Terminals[i].Node.Write = VT_Write;
- gVT_Terminals[i].Node.IOCtl = VT_IOCtl;
- }
-
- // Add to DevFS
- DevFS_AddDevice( &gVT_DrvInfo );
-
- return 0;
-}
-
-/**
- * \fn void VT_InitOutput()
- * \brief Initialise Video Output
- */
-void VT_InitOutput()
-{
- giVT_OutputDevHandle = VFS_Open(gsVT_OutputDevice, VFS_OPENFLAG_WRITE);
- LOG("giVT_OutputDevHandle = %x\n", giVT_OutputDevHandle);
-}
-
-/**
- * \fn void VT_InitInput()
- * \brief Initialises the input
- */
-void VT_InitInput()
-{
- giVT_InputDevHandle = VFS_Open(gsVT_InputDevice, VFS_OPENFLAG_READ);
- LOG("giVT_InputDevHandle = %x\n", giVT_InputDevHandle);
- if(giVT_InputDevHandle == -1) return ;
- VFS_IOCtl(giVT_InputDevHandle, KB_IOCTL_SETCALLBACK, VT_KBCallBack);
-}
-
-/**
- * \fn char *VT_ReadDir(tVFS_Node *Node, int Pos)
- * \brief Read from the VTerm Directory
- */
-char *VT_ReadDir(tVFS_Node *Node, int Pos)
-{
- if(Pos < 0) return NULL;
- if(Pos >= NUM_VTS) return NULL;
- return gVT_Terminals[Pos].Name;
-}
-
-/**
- * \fn tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
- * \brief Find an item in the VTerm directory
- */
-tVFS_Node *VT_FindDir(tVFS_Node *Node, char *Name)
-{
- int num;
-
- //ENTER("pNode sName", Node, Name);
-
- // Open the input and output files if needed
- if(giVT_OutputDevHandle == -2) VT_InitOutput();
- if(giVT_InputDevHandle == -2) VT_InitInput();
-
- // Sanity check name
- if(Name[0] < '0' || Name[0] > '9' || Name[1] != '\0') {
- LEAVE('n');
- return NULL;
- }
- // Get index
- num = Name[0] - '0';
- if(num >= NUM_VTS) {
- LEAVE('n');
- return NULL;
- }
- // Return node
- //LEAVE('p', &gVT_Terminals[num].Node);
- return &gVT_Terminals[num].Node;
-}
-
-/**
- * \fn Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
- * \brief Read from a virtual terminal
- */
-Uint64 VT_Read(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
-{
- int pos = 0;
- tVTerm *term = &gVT_Terminals[ Node->Inode ];
-
- // Check current mode
- switch(term->Mode)
- {
- case VT_MODE_TEXT8:
- while(pos < Length)
- {
- while(term->InputRead == term->InputWrite) Proc_Yield();
- while(term->InputRead != term->InputWrite)
- {
- LOG("WriteUTF8(%p, 0x%x)", Buffer+pos, term->InputBuffer[term->InputRead]);
- pos += WriteUTF8(Buffer+pos, term->InputBuffer[term->InputRead]);
- term->InputRead ++;
- term->InputRead %= MAX_INPUT_CHARS;
- }
- }
- break;
-
- case VT_MODE_TEXT32:
- while(pos < Length)
- {
- while(term->InputRead == term->InputWrite) Proc_Yield();
- while(term->InputRead != term->InputWrite)
- {
- ((Uint32*)Buffer)[pos] = term->InputBuffer[term->InputRead];
- pos ++;
- term->InputRead ++;
- term->InputRead %= MAX_INPUT_CHARS;
- }
- }
- break;
- }
- return 0;
-}
-
-/**
- * \fn Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
- * \brief Write to a virtual terminal
- */
-Uint64 VT_Write(tVFS_Node *Node, Uint64 Offset, Uint64 Length, void *Buffer)
-{
- tVTerm *term = &gVT_Terminals[ Node->Inode ];
-
- //ENTER("pNode XOffset XLength pBuffer", Node, Offset, Length, Buffer);
-
- // Write
- switch( term->Mode )
- {
- case VT_MODE_TEXT8:
- VT_int_PutString(term, Buffer, Length);
- break;
- case VT_MODE_TEXT32:
- //VT_int_PutString32(term, Buffer, Length);
- break;
- }
-
- //LEAVE('i', 0);
- return 0;
-}
-
-/**
- * \fn int VT_IOCtl(tVFS_Node *Node, int Id, void *Data)
- * \brief Call an IO Control on a virtual terminal
- */
-int VT_IOCtl(tVFS_Node *Node, int Id, void *Data)
-{
- return 0;
-}
-
-/**
- * \fn void VT_KBCallBack(Uint32 Codepoint)
- * \brief Called on keyboard interrupt
- */
-void VT_KBCallBack(Uint32 Codepoint)
-{
- tVTerm *term = &gVT_Terminals[giVT_CurrentTerminal];
-
- term->InputBuffer[ term->InputWrite ] = Codepoint;
- term->InputWrite ++;
- term->InputWrite %= MAX_INPUT_CHARS;
- if(term->InputRead == term->InputWrite) {
- term->InputRead ++;
- term->InputRead %= MAX_INPUT_CHARS;
- }
-}
-
-/**
- * \fn void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
- * \brief Print a string to the Virtual Terminal
- */
-void VT_int_PutString(tVTerm *Term, Uint8 *Buffer, Uint Count)
-{
- Uint32 val;
- int i;
- for( i = 0; i < Count; i++ )
- {
- if( Buffer[i] == 0x1B ) // Escape Sequence
- {
- i ++;
- i += VT_int_ParseEscape(Term, (char*)&Buffer[i]);
- continue;
- }
-
- if( Buffer[i] < 128 ) // Plain ASCII
- VT_int_PutChar(Term, Buffer[i]);
- else { // UTF-8
- i += ReadUTF8(&Buffer[i], &val);
- VT_int_PutChar(Term, val);
- }
- }
-
- // Update cursor
- if( !(Term->Flags & VT_FLAG_HIDECSR) )
- {
- tVideo_IOCtl_Pos pos;
- pos.x = Term->WritePos % Term->Width;
- pos.y = Term->WritePos / Term->Width;
- VFS_IOCtl(giVT_OutputDevHandle, VIDEO_IOCTL_SETCURSOR, &pos);
- }
-}
-
-/**
- * \fn void VT_int_ClearLine(tVTerm *Term, int Num)
- * \brief Clears a line in a virtual terminal
- */
-void VT_int_ClearLine(tVTerm *Term, int Num)
-{
- int i;
- ENTER("pTerm iNum", Term, Num);
- for( i = Term->Width; i++; )
- {
- Term->Text[ Num*Term->Width + i ].Ch = 0;
- Term->Text[ Num*Term->Width + i ].Colour = Term->CurColour;
- }
- LEAVE('-');
-}
-
-/**
- * \fn int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
- * \brief Parses a VT100 Escape code
- */
-int VT_int_ParseEscape(tVTerm *Term, char *Buffer)
-{
- char c;
- int argc = 0, j = 1;
- int args[4] = {0,0,0,0};
-
- switch(Buffer[0]) {
- //Large Code
- case '[':
- // Get Arguments
- c = Buffer[1];
- do {
- while('0' <= c && c <= '9') {
- args[argc] *= 10;
- args[argc] += c-'0';
- c = Buffer[++j];
- }
- argc ++;
- } while(c == ';');
-
- // Get string (what does this do?)
- if(c == '"') {
- c = Buffer[++j];
- while(c != '"')
- c = Buffer[++j];
- }
-
- // Get Command
- if( ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z'))
- {
- switch(c) {
- //Clear By Line
- case 'J':
- // Clear Screen
- switch(args[0])
- {
- case 2:
- {
- int i = Term->Height * VT_SCROLLBACK;
- while( i-- ) VT_int_ClearLine(Term, i);
- Term->WritePos = 0;
- Term->ViewPos = 0;
- VT_int_UpdateScreen(Term, 1);
- }
- break;
- }
- break;
- // Set Font flags
- case 'm':
- for( ; argc--; )
- {
- // Flags
- if( 0 <= args[argc] && args[argc] <= 8)
- {
- switch(args[argc])
- {
- case 0: Term->CurColour = DEFAULT_COLOUR; break; // Reset
- case 1: Term->CurColour |= 0x80000000; break; // Bright
- case 2: Term->CurColour &= ~0x80000000; break; // Dim
- }
- }
- // Foreground Colour
- else if(30 <= args[argc] && args[argc] <= 37) {
- Term->CurColour &= 0xF000FFFF;
- Term->CurColour |= (Uint32)caVT100Colours[ args[argc]-30+(Term->CurColour>>28) ] << 16;
- }
- // Background Colour
- else if(40 <= args[argc] && args[argc] <= 47) {
- Term->CurColour &= 0xFFFF8000;
- Term->CurColour |= caVT100Colours[ args[argc]-40+((Term->CurColour>>12)&15) ];
- }
- }
- break;
- }
- }
- break;
-
- default:
- break;
- }
-
- return j + 1;
-}
-
-/**
- * \fn void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
- * \brief Write a single character to a VTerm
- */
-void VT_int_PutChar(tVTerm *Term, Uint32 Ch)
-{
- int i;
- //ENTER("pTerm xCh", Term, Ch);
- //LOG("Term = {WritePos:%i, ViewPos:%i}\n", Term->WritePos, Term->ViewPos);
-
- switch(Ch)
- {
- case 0: return; // Ignore NULL byte
- case '\n':
- Term->WritePos += Term->Width;
- case '\r':
- Term->WritePos -= Term->WritePos % Term->Width;
- break;
-
- case '\t':
- do {
- Term->Text[ Term->WritePos ].Ch = '\t';
- Term->Text[ Term->WritePos ].Colour = Term->CurColour;
- Term->WritePos ++;
- } while(Term->WritePos & 7);
- break;
-
- case '\b':
- // Backspace is invalid at Offset 0
- if(Term->WritePos == 0) break;
-
- Term->WritePos --;
- // Singe Character
- if(Term->Text[ Term->WritePos ].Ch != '\t') {
- Term->Text[ Term->WritePos ].Ch = 0;
- Term->Text[ Term->WritePos ].Colour = Term->CurColour;
- break;
- }
- // Tab
- i = 7; // Limit it to 8
- do {
- Term->Text[ Term->WritePos ].Ch = 0;
- Term->Text[ Term->WritePos ].Colour = Term->CurColour;
- Term->WritePos --;
- } while(Term->WritePos && i-- && Term->Text[ Term->WritePos ].Ch == '\t');
- break;
-
- default:
- Term->Text[ Term->WritePos ].Ch = Ch;
- Term->Text[ Term->WritePos ].Colour = Term->CurColour;
- Term->WritePos ++;
- break;
- }
-
-
- // Move Screen
- if(Term->WritePos >= Term->Width*Term->Height*VT_SCROLLBACK)
- {
- int base, i;
- Term->WritePos -= Term->Width;
-
- // Update view position
- base = Term->Width*Term->Height*(VT_SCROLLBACK-1);
- if(Term->ViewPos < base) Term->ViewPos += Term->Width;
- if(Term->ViewPos > base) Term->ViewPos = base;
-
- // Scroll terminal cache
- base = Term->Width*(Term->Height*VT_SCROLLBACK-1);
-
- // Scroll Back
- memcpy(
- Term->Text,
- &Term->Text[Term->Width],
- Term->Width*(Term->Height-1)*VT_SCROLLBACK*sizeof(tVT_Char)
- );
-
- // Clear last row
- for( i = 0; i < Term->Width; i ++ )
- {
- Term->Text[ base + i ].Ch = 0;
- Term->Text[ base + i ].Colour = Term->CurColour;
- }
-
- VT_int_UpdateScreen( Term, 1 );
- }
- else if(Term->WritePos > Term->Width*Term->Height+Term->ViewPos)
- {
- Term->ViewPos += Term->Width;
- VT_int_UpdateScreen( Term, 1 );
- }
- else
- VT_int_UpdateScreen( Term, 0 );
-
- //LEAVE('-');
-}
-
-/**
- * \fn void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
- * \brief Updates the video framebuffer
- */
-void VT_int_UpdateScreen( tVTerm *Term, int UpdateAll )
-{
- if(UpdateAll) {
- VFS_WriteAt(
- giVT_OutputDevHandle,
- 0,
- Term->Width*Term->Height*sizeof(tVT_Char),
- &Term->Text[Term->ViewPos]
- );
- } else {
- int pos = Term->WritePos - Term->WritePos % Term->Width;
- VFS_WriteAt(
- giVT_OutputDevHandle,
- (pos - Term->ViewPos)*sizeof(tVT_Char),
- Term->Width*sizeof(tVT_Char),
- &Term->Text[pos]
- );
- }
-}
-
-// ---
-// Font Render
-// ---
-#define MONOSPACE_FONT 10816
-
-#if MONOSPACE_FONT == 10808 // 8x8
-# include "vterm_font_8x8.h"
-#elif MONOSPACE_FONT == 10816 // 8x16
-# include "vterm_font_8x16.h"
-#endif
-
-
-int VT_Font_GetWidth(Uint32 Codepoint)
-{
- return FONT_WIDTH;
-}
-int VT_Font_GetHeight(Uint32 Codepoint)
-{
- return FONT_HEIGHT;
-}
-
-void VT_Font_Render(Uint32 Codepoint, void *Buffer, Uint32 BGC, Uint32 FGC)
-{
-// Uint8 *font;
-
-}
-
-/**
- * \fn Uint8 *VT_Font_GetChar(Uint32 Codepoint)
- * \brief Gets an index into the font array given a Unicode Codepoint
- * \note See http://en.wikipedia.org/wiki/CP437
- */
-Uint8 *VT_Font_GetChar(Uint32 Codepoint)
-{
- int index = 0;
- if(Codepoint < 128)
- return &VTermFont[Codepoint*FONT_HEIGHT];
- switch(Codepoint)
- {
- case 0xC7: index = 128; break; // Ç
- case 0xFC: index = 129; break; // ü
- case 0xE9: index = 130; break; // é
- case 0xE2: index = 131; break; // â
- case 0xE4: index = 132; break; // ä
- case 0xE0: index = 133; break; // à
- case 0xE5: index = 134; break; // å
- case 0xE7: index = 135; break; // ç
- case 0xEA: index = 136; break; // ê
- case 0xEB: index = 137; break; // ë
- case 0xE8: index = 138; break; // è
- case 0xEF: index = 139; break; // ï
- case 0xEE: index = 140; break; // î
- case 0xEC: index = 141; break; // ì
- case 0xC4: index = 142; break; // Ä
- case 0xC5: index = 143; break; // Å
- }
-
- return &VTermFont[index*FONT_HEIGHT];
-}
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