graphic charset and a few more escapes.

2 files changed, 110 insertions, 16 deletions

diff --git a/config.h b/config.h
index 7da5848..0e04ab1 100644
--- a/config.h
+++ b/config.h
@@ -36,3 +36,38 @@ static Key key[] = {
         { XK_Up,     "\033[A" },
         { XK_Down,   "\033[B" },
 };
+
+static char gfx[] = {
+        ['}'] = 'f',
+        ['.'] = 'v',
+        [','] = '<',
+        ['+'] = '>',
+        ['-'] = '^',
+        ['h'] = '#',
+        ['~'] = 'o',
+        ['a'] = ':',
+        ['f'] = '\\',
+        ['`'] = '+',
+        ['z'] = '>',
+        ['{'] = '*',
+        ['q'] = '-',
+        ['i'] = '#',
+        ['n'] = '+',
+        ['y'] = '<',
+        ['m'] = '+',
+        ['j'] = '+',
+        ['|'] = '!',
+        ['g'] = '#',
+        ['o'] = '~',
+        ['p'] = '-',
+        ['r'] = '-',
+        ['s'] = '_',
+        ['0'] = '#',
+        ['w'] = '+',
+        ['u'] = '+',
+        ['t'] = '+',
+        ['v'] = '+',
+        ['l'] = '+',
+        ['k'] = '+',
+        ['x'] = '|',
+};
diff --git a/st.c b/st.c
index a84f0e0..ca5fb5d 100644
--- a/st.c
+++ b/st.c
@@ -38,11 +38,11 @@
 #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
 
 /* Attribute, Cursor, Character state, Terminal mode, Screen draw mode */
-enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4 };
-enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSwrap, CSsave, CSload };
+enum { ATnone=0 , ATreverse=1 , ATunderline=2, ATbold=4, ATgfx=8 };
+enum { CSup, CSdown, CSright, CSleft, CShide, CSdraw, CSsave, CSload };
 enum { CRset=1, CRupdate=2 };
-enum { TMwrap=1, TMinsert=2, TMtitle=4 };
-enum { ESCin = 1, ESCcsi = 2, ESCosc = 4, ESCtitle = 8 };
+enum { TMwrap=1, TMinsert=2 };
+enum { ESCin=1, ESCcsi=2, ESCosc=4, ESCtitle=8, ESCcharset=16 };
 enum { SCupdate, SCredraw };
 
 typedef int Color;
@@ -68,7 +68,7 @@ typedef struct {
 /* ESC '[' [[ [<priv>] <arg> [;]] <mode>] */
 typedef struct {
         char buf[ESCSIZ]; /* raw string */
-        int len;            /* raw string length */
+        int len;          /* raw string length */
         char priv;
         int arg[ESCARGSIZ];
         int narg;           /* nb of args */
@@ -389,7 +389,7 @@ tmoveto(int x, int y) {
 void
 tcursor(int dir) {
         int xf = term.c.x, yf = term.c.y;
-
+        
         switch(dir) {
         case CSup:
                 yf--;
@@ -399,7 +399,7 @@ tcursor(int dir) {
                 break;
         case CSleft:
                 xf--;
-                if(xf < 0) {
+                if(term.mode & TMwrap && xf < 0) {
                         xf = term.col-1, yf--;
                         if(yf < term.top)
                                 yf = term.top, xf = 0;
@@ -407,7 +407,7 @@ tcursor(int dir) {
                 break;
         case CSright:
                 xf++;
-                if(xf >= term.col) {
+                if(term.mode & TMwrap && xf >= term.col) {
                         xf = 0, yf++;
                         if(yf > term.bot)
                                 yf = term.bot, tscroll();
@@ -416,7 +416,7 @@ tcursor(int dir) {
         }
         tmoveto(xf, yf);
 }
-
+        
 void
 tsetchar(char c) {
         term.line[term.c.y][term.c.x] = term.c.attr;
@@ -535,7 +535,7 @@ tsetattr(int *attr, int l) {
         for(i = 0; i < l; i++) {
                 switch(attr[i]) {
                 case 0:
-                        memset(&term.c.attr, 0, sizeof(term.c.attr));
+                        term.c.attr.mode &= ~(ATreverse | ATunderline | ATbold);
                         term.c.attr.fg = DefaultFG;
                         term.c.attr.bg = DefaultBG;
                         break;
@@ -593,7 +593,10 @@ tsetscroll(int t, int b) {
 
 void
 csihandle(void) {
+        if(escseq.priv)
+                csidump();
         switch(escseq.mode) {
+        unknown:
         default:
                 fprintf(stderr, "erresc: unknown sequence\n");
                 csidump();
@@ -672,8 +675,16 @@ csihandle(void) {
                 tinsertblankline(escseq.arg[0]);
                 break;
         case 'l':
-                if(escseq.priv && escseq.arg[0] == 25)
+                if(escseq.priv) {
+                        switch(escseq.arg[0]) {
+                        case 7:
+                                term.mode &= ~TMwrap;
+                                break;
+                        case 25:
                                 term.c.hidden = 1;
+                                break;
+                        }
+                }
                 break;
         case 'M': /* Delete <n> lines */
                 DEFAULT(escseq.arg[0], 1);
@@ -689,15 +700,25 @@ csihandle(void) {
                 tmoveto(term.c.x, escseq.arg[0]-1);
                 break;
         case 'h': /* Set terminal mode */
-                if(escseq.priv && escseq.arg[0] == 25)
-                        term.c.hidden = 0;
+                if(escseq.priv)
+                        switch(escseq.arg[0]) {
+                        case 7:
+                                term.mode |= TMwrap;
+                                break;
+                        case 25:
+                                term.c.hidden = 0;
+                                break;
+                        case 1034:
+                                /* XXX: Interpret "meta" key, sets eighth bit. */
+                                break;
+                        }
                 break;
         case 'm': /* Terminal attribute (color) */
                 tsetattr(escseq.arg, escseq.narg);
                 break;
         case 'r':
                 if(escseq.priv)
-                        ;
+                        goto unknown;
                 else {
                         DEFAULT(escseq.arg[0], 1);
                         DEFAULT(escseq.arg[1], term.row);
@@ -766,6 +787,17 @@ tputc(char c) {
                         } else {
                                 term.title[term.titlelen++] = c;
                         }
+                } else if(term.esc & ESCcharset) {
+                        printf("ESC ( %c\n", c);
+                        switch(c) {
+                        case '0': /* Line drawing crap */
+                                term.c.attr.mode |= ATgfx;
+                                break;
+                        case 'B': /* Back to regular text */
+                                term.c.attr.mode &= ~ATgfx;
+                                break;
+                        }
+                        term.esc = 0;
                 } else {                
                         switch(c) {
                         case '[':
@@ -774,6 +806,23 @@ tputc(char c) {
                         case ']':
                                 term.esc |= ESCosc;
                                 break;
+                        case '(':
+                                term.esc |= ESCcharset;
+                                break;
+                        case 'A':
+                                tmoveto(term.c.x, term.c.y-1);
+                                break;
+                        case 'B':
+                                tmoveto(term.c.x, term.c.y+1);
+                                break;
+                        case 'C':
+                                tmoveto(term.c.x+1, term.c.y);
+                                break;
+                        case 'D':
+                                tmoveto(term.c.x-1, term.c.y);
+                                break;
+                        default:
+                                fprintf(stderr, "erresc: unknown sequence ESC %02X '%c'\n", c, isprint(c)?c:'.');
                         }
                 }
         } else {
@@ -931,6 +980,8 @@ void
 xdraws (char *s, Glyph base, int x, int y, int len) {
         unsigned long xfg, xbg;
         int winx = x*xw.cw, winy = y*xw.ch + dc.font->ascent, width = len*xw.cw;
+        int i;
+
         if(base.mode & ATreverse)
                 xfg = dc.col[base.bg], xbg = dc.col[base.fg];
         else
@@ -938,6 +989,13 @@ xdraws (char *s, Glyph base, int x, int y, int len) {
 
         XSetBackground(xw.dis, dc.gc, xbg);
         XSetForeground(xw.dis, dc.gc, xfg);
+        
+        if(base.mode & ATgfx) {
+           
+                for(i = 0; i < len; i++)
+                        s[i] = gfx[s[i]];
+        }
+        
         XDrawImageString(xw.dis, xw.win, dc.gc, winx, winy, s, len);
         
         if(base.mode & ATunderline)
@@ -1006,7 +1064,8 @@ draw(int redraw_all) {
                 }
                 xdraws(buf, base, ox, y, i);
         }
-        xcursor(CSdraw);
+        if(!term.c.hidden)
+                xcursor(CSdraw);
 }
 
 void
@@ -1014,7 +1073,7 @@ expose(XEvent *ev) {
         draw(SCredraw);
 }
 
-char *
+char*
 kmap(KeySym k) {
         int i;
         for(i = 0; i < LEN(key); i++)