3 * - By John Hodge (thePowersGang)
6 * - VT100/xterm Emulation
10 #include "include/vt100.h"
11 #include "include/display.h"
12 #include <ctype.h> // isalpha
13 #include <acess/sys.h> // _SysDebug
16 const uint32_t caVT100Colours[] = {
17 // Black, Red, Green, Yellow, Blue, Purple, Cyan, Gray
18 // Same again, but bright
19 0x000000, 0x770000, 0x007700, 0x777700, 0x000077, 0x770077, 0x007777, 0xAAAAAAA,
20 0xCCCCCC, 0xFF0000, 0x00FF00, 0xFFFF00, 0x0000FF, 0xFF00FF, 0x00FFFF, 0xFFFFFFF
23 int Term_HandleVT100_Long(tTerminal *Term, int Len, const char *Buf);
25 static inline int min(int a, int b)
30 int Term_HandleVT100(tTerminal *Term, int Len, const char *Buf)
32 #define MAX_VT100_ESCAPE_LEN 16
33 static char inc_buf[MAX_VT100_ESCAPE_LEN];
34 static int inc_len = 0;
36 if( inc_len > 0 || *Buf == '\x1b' )
38 // Handle VT100 (like) escape sequence
39 int new_bytes = min(MAX_VT100_ESCAPE_LEN - inc_len, Len);
40 int ret = 0, old_inc_len = inc_len;
41 memcpy(inc_buf + inc_len, Buf, new_bytes);
46 return 1; // Skip 1 character (the '\x1b')
50 case '[': // Multibyte, funtime starts
51 ret = Term_HandleVT100_Long(Term, inc_len-2, inc_buf+2);
63 assert(ret > old_inc_len);
64 ret -= old_inc_len; // counter cached bytes
72 Display_MoveCursor(Term, 0, -1);
73 Display_AddText(Term, 1, " ");
74 Display_MoveCursor(Term, 0, -1);
75 // TODO: Need to handle \t and ^A-Z
78 // TODO: tab (get current cursor pos, space until multiple of 8)
81 Display_Newline(Term, 1);
84 Display_MoveCursor(Term, 0, INT_MIN);
98 // Force an exit right now
110 int Term_HandleVT100_Long(tTerminal *Term, int Len, const char *Buffer)
114 int args[6] = {0,0,0,0,0,0};
115 int bQuestionMark = 0;
118 if(j == Len) return 0;
122 if(j == Len) return 0;
125 if( '0' <= c && c <= '9' )
129 if(j == Len) return 0;
132 while('0' <= c && c <= '9') {
135 if(j == Len) return 0;
145 _SysDebug("Unexpected char 0x%x in VT100 escape code '\\e[%.*s'", c,
161 case 25: // Hide cursor
162 _SysDebug("TODO: \\e[?25%c Show/Hide cursor", c);
164 case 1047: // Alternate buffer
165 Display_ShowAltBuffer(Term, set);
168 _SysDebug("TODO: \\e[?%i%c Unknow DEC private mode", args[0], c);
173 _SysDebug("Unknown VT100 extended escape char 0x%x", c);
186 Display_SetCursor(Term, args[0], args[1]);
191 Display_ClearLine(Term, 0);
192 else if( args[0] == 2 )
193 Display_ClearLines(Term, 0); // Entire screen!
195 _SysDebug("TODO: VT100 %i J", args[0]);
197 case 'T': // Scroll down n=1
198 Display_ScrollDown(Term, 1);
208 for( i = 0; i < argc; i ++ )
214 else if( 30 <= args[i] && args[i] <= 37 )
217 Display_SetForeground( Term, caVT100Colours[ args[i]-30 ] );
219 else if( 40 <= args[i] && args[i] <= 47 )
222 Display_SetBackground( Term, caVT100Colours[ args[i]-30 ] );
227 // Set scrolling region
229 Display_SetScrollArea(Term, args[0], args[1]);
233 Display_SaveCursor(Term);
236 Display_RestoreCursor(Term);
239 _SysDebug("Unknown VT100 long escape char 0x%x '%c'", c, c);