Minix: src/lib/curses/cursesio.c Source File

00001 #include <stdlib.h>
00002 #include <termcap.h>
00003 #include <sys/types.h>
00004 #include <sys/ioctl.h>
00005 #include <curses.h>
00006 #include "curspriv.h"
00007 
00008 struct termios _orig_tty, _tty;
00009 cursv _cursvar;
00010 
00011 WINDOW *stdscr, *curscr;
00012 int LINES, COLS;
00013 bool NONL;
00014 
00015 char termcap[1024];             /* termcap buffer */
00016 char tc[200];                   /* area to hold string capabilities */
00017 char *ttytype;                  /* terminal type from env */
00018 static char *arp;               /* pointer for use in tgetstr */
00019 char *cp;                       /* character pointer */
00020 
00021 char *cl;                       /* clear screen capability */
00022 char *cm;                       /* cursor motion capability */
00023 char *so;                       /* start standout capability */
00024 char *se;                       /* end standout capability */
00025 char *mr;                       /* start of reverse */
00026 char *me;                       /* revert to normal */
00027 char *mb;                       /* start of blink */
00028 char *md;                       /* start of bold */
00029 char *us;                       /* start of underscore */
00030 char *ue;                       /* end of underscore */
00031 char *vi;                       /* cursor invisible */
00032 char *ve;                       /* cursor normal */
00033 char *vs;                       /* cursor good visible */
00034 char *as;                       /* alternative charset start */
00035 char *ae;                       /* alternative charset end */
00036 char *bl;                       /* ring the bell */
00037 char *vb;                       /* visual bell */
00038 
00039 /* fatal - report error and die. Never returns */
00040 void fatal(s)
00041 char *s;
00042 {
00043   (void) fprintf(stderr, "curses: %s\n", s);
00044   exit(1);
00045 }
00046 
00047 /* Outc - call putchar, necessary because putchar is a macro. */
00048 void outc(c)
00049 int c;
00050 {
00051   putchar(c);
00052 }
00053 
00054 /* Move cursor to r,c */
00055 void poscur(r, c)
00056 int r, c;
00057 {
00058   tputs(tgoto(cm, c, r), 1, outc);
00059 }
00060 
00061 /* Clear the screen */
00062 void clrscr()
00063 {
00064   tputs(cl, 1, outc);
00065 }
00066 
00067 /* This are terminal independent characters which can be used in curses */
00068 
00069 unsigned int ACS_ULCORNER;
00070 unsigned int ACS_LLCORNER;
00071 unsigned int ACS_URCORNER;
00072 unsigned int ACS_LRCORNER;
00073 unsigned int ACS_RTEE;
00074 unsigned int ACS_LTEE;
00075 unsigned int ACS_BTEE;
00076 unsigned int ACS_TTEE;
00077 unsigned int ACS_HLINE;
00078 unsigned int ACS_VLINE;
00079 unsigned int ACS_PLUS;
00080 unsigned int ACS_S1;
00081 unsigned int ACS_S9;
00082 unsigned int ACS_DIAMOND;
00083 unsigned int ACS_CKBOARD;
00084 unsigned int ACS_DEGREE;
00085 unsigned int ACS_PLMINUS;
00086 unsigned int ACS_BULLET;
00087 unsigned int ACS_LARROW;
00088 unsigned int ACS_RARROW;
00089 unsigned int ACS_DARROW;
00090 unsigned int ACS_UARROW;
00091 unsigned int ACS_BOARD;
00092 unsigned int ACS_LANTERN;
00093 unsigned int ACS_BLOCK;
00094 
00095 /* These defines describe the full set of grafic block characters which
00096  * can be defined via termcap.
00097  */
00098 
00099 #define RIGHTARROW  0
00100 #define LEFTARROW   1
00101 #define DOWNARROW   2
00102 #define UPARROW     3
00103 #define FULLSQUARE  4
00104 #define GREYSQUARE  5
00105 #define EMPTYSQUARE 6
00106 #define LATERN      7
00107 #define DIAMOND     8
00108 #define DEGREE      9
00109 #define PLUSMINUS  10
00110 #define DOWNRIGHT  11
00111 #define UPRIGHT    12
00112 #define UPLEFT     13
00113 #define DOWNLEFT   14
00114 #define CROSS      15
00115 #define UPLINE     16
00116 #define UPMIDLINE  17
00117 #define MIDLINE    18
00118 #define DOMIDLINE  19
00119 #define DOWNLINE   20
00120 #define TEELEFT    21
00121 #define TEERIGHT   22
00122 #define TEEHEAD    23
00123 #define TEENORMAL  24
00124 #define VERTLINE   25
00125 #define PARAGRAPH  26
00126 
00127 unsigned int _cursgraftable[27] =
00128 {
00129  '>', '<', 'v', '^', '#', ':', ' ', '#', '+', '\'', '#', '+', '+',
00130  '+', '+', '+', '-', ' ', '-', ' ', '_', '+', '+', '+', '+', '|'
00131 };
00132 char _cursident[28] = "+,.-0ahI`fgjklmnopqrstuvwx~";
00133 
00134 int setterm(type)
00135 char *type;
00136 {
00137   unsigned char *ac;
00138   int i;
00139 #ifdef TIOCGWINSZ
00140   struct winsize wsize;
00141 #endif
00142 
00143   if (tgetent(termcap, type) != 1) return ERR;
00144 
00145 #ifdef TIOCGWINSZ
00146   if (ioctl(0, TIOCGWINSZ, &wsize) == 0) {
00147         LINES = wsize.ws_row != 0 ? wsize.ws_row : tgetnum("li");
00148         COLS = wsize.ws_col != 0 ? wsize.ws_col : tgetnum("co");
00149   } else {
00150 #endif
00151         LINES = tgetnum("li");
00152         COLS = tgetnum("co");
00153 #ifdef TIOCGWINSZ
00154   }
00155 #endif
00156   arp = tc;
00157   cl = tgetstr("cl", &arp);
00158   so = tgetstr("so", &arp);
00159   se = tgetstr("se", &arp);
00160   cm = tgetstr("cm", &arp);
00161   mr = tgetstr("mr", &arp);
00162   me = tgetstr("me", &arp);
00163   mb = tgetstr("mb", &arp);
00164   md = tgetstr("md", &arp);
00165   us = tgetstr("us", &arp);
00166   ue = tgetstr("ue", &arp);
00167   vi = tgetstr("vi", &arp);
00168   ve = tgetstr("ve", &arp);
00169   vs = tgetstr("vs", &arp);
00170   as = tgetstr("as", &arp);
00171   ae = tgetstr("ae", &arp);
00172   ac = (unsigned char *) tgetstr("ac", &arp);
00173   bl = tgetstr("bl", &arp);
00174   vb = tgetstr("vb", &arp);
00175 
00176   if (ac) {
00177         while (*ac) {
00178                 i = 0;
00179                 while (*ac != _cursident[i]) i++;
00180                 _cursgraftable[i] = *++ac | A_ALTCHARSET;
00181                 ac++;
00182         }
00183   }
00184 
00185   ACS_ULCORNER = _cursgraftable[UPLEFT];
00186   ACS_LLCORNER = _cursgraftable[DOWNLEFT];
00187   ACS_URCORNER = _cursgraftable[UPRIGHT];
00188   ACS_LRCORNER = _cursgraftable[DOWNRIGHT];
00189   ACS_RTEE = _cursgraftable[TEERIGHT];
00190   ACS_LTEE = _cursgraftable[TEELEFT];
00191   ACS_BTEE = _cursgraftable[TEEHEAD];
00192   ACS_TTEE = _cursgraftable[TEENORMAL];
00193   ACS_HLINE = _cursgraftable[MIDLINE];
00194   ACS_VLINE = _cursgraftable[VERTLINE];
00195   ACS_PLUS = _cursgraftable[CROSS];
00196   ACS_S1 = _cursgraftable[UPLINE];
00197   ACS_S9 = _cursgraftable[DOWNLINE];
00198   ACS_DIAMOND = _cursgraftable[DIAMOND];
00199   ACS_CKBOARD = _cursgraftable[GREYSQUARE];
00200   ACS_DEGREE = _cursgraftable[DEGREE];
00201   ACS_PLMINUS = _cursgraftable[PLUSMINUS];
00202   ACS_BULLET = 'o';             /* where the hell is a bullet defined in
00203                          * termcap ??? */
00204   ACS_LARROW = _cursgraftable[LEFTARROW];
00205   ACS_RARROW = _cursgraftable[RIGHTARROW];
00206   ACS_DARROW = _cursgraftable[DOWNARROW];
00207   ACS_UARROW = _cursgraftable[UPARROW];
00208   ACS_BOARD = _cursgraftable[EMPTYSQUARE];
00209   ACS_LANTERN = _cursgraftable[LATERN];
00210   ACS_BLOCK = _cursgraftable[FULLSQUARE];
00211   /* Wow, I got it! */
00212   return OK;
00213 }
00214 
00215 void gettmode()
00216 {
00217   tcgetattr(0, &_orig_tty);
00218   tcgetattr(0, &_tty);
00219   _cursvar.echoit = (_tty.c_lflag & ECHO) != 0;
00220   _cursvar.rawmode = (_tty.c_lflag & (ICANON|ISIG)) == 0;
00221   _cursvar.cbrkmode = (_tty.c_lflag & (ICANON|ISIG)) == ISIG;
00222   NONL = (_tty.c_iflag & ICRNL) != 0;
00223 }