st

fork of suckless's simple terminal
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commit 6f87a39444166674daa94860d365e72343e0b882
parent ce27e634910e10c470b2dcb2edcd20f05d25343b
Author: Aurélien Aptel <aurelien.aptel@gmail.com>
Date:   Sat, 16 Oct 2010 20:50:29 +0200

added LNM mode; re-organized kpress() to handle it.

Diffstat:
Mst.c | 51++++++++++++++++++++++++++++++++++-----------------
1 file changed, 34 insertions(+), 17 deletions(-)
diff --git a/st.c b/st.c
@@ -55,7 +55,8 @@ enum { CURSOR_UP, CURSOR_DOWN, CURSOR_LEFT, CURSOR_RIGHT,
        CURSOR_SAVE, CURSOR_LOAD };
 enum { CURSOR_DEFAULT = 0, CURSOR_HIDE = 1, CURSOR_WRAPNEXT = 2 };
 enum { GLYPH_SET=1, GLYPH_DIRTY=2 };
-enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8 };
+enum { MODE_WRAP=1, MODE_INSERT=2, MODE_APPKEYPAD=4, MODE_ALTSCREEN=8, 
+       MODE_CRLF=16 };
 enum { ESC_START=1, ESC_CSI=2, ESC_OSC=4, ESC_TITLE=8, ESC_ALTCHARSET=16 };
 enum { SCREEN_UPDATE, SCREEN_REDRAW };
 enum { WIN_VISIBLE=1, WIN_REDRAW=2, WIN_FOCUSED=4 };
@@ -164,7 +165,7 @@ static void tinsertblank(int);
 static void tinsertblankline(int);
 static void tmoveto(int, int);
 static void tnew(int, int);
-static void tnewline(void);
+static void tnewline(int);
 static void tputtab(void);
 static void tputc(char);
 static void tputs(char*, int);
@@ -626,14 +627,13 @@ tscrollup(int orig, int n) {
 }
 
 void
-tnewline(void) {
-    int x = term.c.x+1 < term.col ? term.c.x : 0;
+tnewline(int first_col) {
     int y = term.c.y;
-    if(term.c.y == term.bot)
+    if(y == term.bot)
         tscrollup(term.top, 1);
     else
         y++;
-    tmoveto(x, y);
+    tmoveto(first_col ? 0 : term.c.x, y);
 }
 
 void
@@ -932,6 +932,9 @@ csihandle(void) {
                 break;
             case 12: /* att610 -- Stop blinking cursor (IGNORED) */
                 break;
+            case 20:
+                term.mode &= ~MODE_CRLF;
+                break;
             case 25:
                 term.c.state |= CURSOR_HIDE;
                 break;
@@ -988,6 +991,9 @@ csihandle(void) {
             case 7:
                 term.mode |= MODE_WRAP;
                 break;
+            case 20:
+                term.mode |= MODE_CRLF;
+                break;
             case 12: /* att610 -- Start blinking cursor (IGNORED) */
                  /* fallthrough for xterm cvvis = CSI [ ? 12 ; 25 h */
                 if(escseq.narg > 1 && escseq.arg[1] != 25)
@@ -1116,7 +1122,7 @@ tputc(char c) {
                 term.esc = 0;
                 break;
             case 'E': /* NEL -- Next line */
-                tnewline();
+                tnewline(1); /* always go to first col */
                 term.esc = 0;
                 break;
             case 'M': /* RI -- Reverse index */
@@ -1163,7 +1169,8 @@ tputc(char c) {
             tmoveto(0, term.c.y);
             break;
         case '\n':
-            tnewline();
+            /* go to first col if the mode is set */
+            tnewline(IS_SET(MODE_CRLF));
             break;
         case '\a':
             if(!(xw.state & WIN_FOCUSED))
@@ -1175,7 +1182,7 @@ tputc(char c) {
             break;
         default:
             if(IS_SET(MODE_WRAP) && term.c.state & CURSOR_WRAPNEXT)
-                tnewline();
+                tnewline(1); /* always go to first col */
             tsetchar(c);
             if(term.c.x+1 < term.col)
                 tmoveto(term.c.x+1, term.c.y);
@@ -1560,15 +1567,12 @@ kpress(XEvent *ev) {
     meta = e->state & Mod1Mask;
     shift = e->state & ShiftMask;
     len = XmbLookupString(xw.xic, e, buf, sizeof(buf), &ksym, &status);
-
+    
+    /* 1. custom keys from config.h */
     if((customkey = kmap(ksym)))
         ttywrite(customkey, strlen(customkey));
-    else if(len > 0) {
-        buf[sizeof(buf)-1] = '\0';
-        if(meta && len == 1)
-            ttywrite("\033", 1);
-        ttywrite(buf, len);
-    } else
+    /* 2. hardcoded (overrides X lookup) */
+    else
         switch(ksym) {
         case XK_Up:
         case XK_Down:
@@ -1581,8 +1585,21 @@ kpress(XEvent *ev) {
             if(shift)
                 selpaste();
             break;
+        case XK_Return:
+            if(IS_SET(MODE_CRLF))
+                ttywrite("\r\n", 2);
+            else
+                ttywrite("\r", 1);
+            break;
+            /* 3. X lookup  */
         default:
-            fprintf(stderr, "errkey: %d\n", (int)ksym);
+            if(len > 0) {
+                buf[sizeof(buf)-1] = '\0';
+                if(meta && len == 1)
+                    ttywrite("\033", 1);
+                ttywrite(buf, len);
+            } else /* 4. nothing to send */
+                fprintf(stderr, "errkey: %d\n", (int)ksym);
             break;
         }
 }