From b734ca5eab7e3a0366cc1c2cedbf4b1c41506a6b Mon Sep 17 00:00:00 2001
From: Erik Osheim <erik@osheim.org>
Date: Tue, 8 Feb 2022 22:22:08 -0500
Subject: [PATCH] femto term size

---
 femto     |  8 +++--
 femto.tal | 94 +++++++++++++++++++++++++++++++++++++++++++++++++------
 2 files changed, 89 insertions(+), 13 deletions(-)

diff --git a/femto b/femto
index fb63adb..798ecda 100755
--- a/femto
+++ b/femto
@@ -2,6 +2,8 @@
 
 TTY=`stty -g`
 uxnasm femto.tal femto.rom
-stty raw -echo
-uxncli femto.rom
-stty "$TTY"
+if [ $? -eq 0 ]; then
+    stty raw -echo
+    uxncli femto.rom
+    stty "$TTY"
+fi
diff --git a/femto.tal b/femto.tal
index 38a6abc..9275efb 100644
--- a/femto.tal
+++ b/femto.tal
@@ -16,13 +16,19 @@
 
 %ansi { #1b18 DEO #5b18 DEO }
 
-%WIDTH { #50 }
+( %WIDTH { #50 }
 %LAST-COL { #4f }
 %PEN-COL { #4e }
 
 %HEIGHT { #18 }
 %LAST-LINE { #17 }
-%PEN-LINE { #16 }
+%PEN-LINE { #16 } )
+
+%PEN-COL { ;term/cols LDA2 #0002 SUB2 NIP }
+
+%HEIGHT { ;term/rows LDA2 NIP }
+%LAST-LINE { ;term/rows LDA2 #0001 SUB2 NIP }
+%PEN-LINE { ;term/rows LDA2 #0002 SUB2 NIP }
 
 ( useful ASCII )
 ( - ESC 1b )
@@ -69,9 +75,11 @@
     ;input-error ;println JSR2 nl exit
 
     &ok
+    ( save how many bytes were read )
     .File/success DEI2 ;buffer/data ADD2 ;buffer/limit STA2
-    ;on-key .Console/vector DEO2
-    ;draw-all JSR2
+(    ;on-key .Console/vector DEO2 )
+(    ;draw-all JSR2 )
+    ;query-terminal-size JSR2
     BRK
 
 
@@ -171,8 +179,28 @@
     ;draw-all JSR2
     &skip BRK
 
+@escape ( -> )
+    #00 #00 DIV
+    #01 ;saw-esc STA BRK
+
+@goto-end ( FIXME )
+@goto-start ( -> )
+    ;buffer/data ;buffer/offset STA2
+    #00 ;cursor/col STA
+    #00 ;cursor/row STA
+    ;draw-all JSR2
+    BRK
+
 ( TODO: tab? )
 @on-key
+    ;saw-esc LDA ,&escaped JCN ,&unmodified JMP
+    &escaped
+    #00 #00 DIV
+    #00 ;saw-esc STA
+    .Console/read DEI LIT '< EQU ( M-< ) ;goto-start JCN2
+    .Console/read DEI LIT '> EQU ( M-> ) ;goto-end JCN2
+    BRK
+    &unmodified
     .Console/read DEI #01 EQU ( C-a ) ;bol JCN2
     .Console/read DEI #02 EQU ( C-b ) ;back JCN2
     .Console/read DEI #04 EQU ( C-d ) ;delete JCN2
@@ -182,6 +210,7 @@
     .Console/read DEI #0e EQU ( C-n ) ;down JCN2
     .Console/read DEI #10 EQU ( C-p ) ;up JCN2
     .Console/read DEI #18 EQU ( C-x ) ;quit JCN2
+    .Console/read DEI #1b EQU ( ESC ) ;escape JCN2
     .Console/read DEI #7f EQU ( DEL ) ;backspace JCN2
     .Console/read DEI #20 LTH ;ignore JCN2 ( ignore for now )
     .Console/read DEI #7e GTH ;ignore JCN2 ( ignore for now )
@@ -191,6 +220,44 @@
 @min ( x^ y^ -> min^ )
     LTHk JMP SWP POP JMP2r
 
+@query-terminal-size
+    ansi #ff ;emit-dec JSR2 LIT '; emit
+         #ff ;emit-dec JSR2 LIT 'H emit
+    ansi LIT '6 emit LIT 'n emit
+    ;tmp/data ;tmp/pos STA2
+    ;receive-terminal-size .Console/vector DEO2
+    JMP2r
+
+@receive-terminal-size
+    .Console/read DEI ;tmp/pos LDA2 STA
+    ;tmp/pos LDA2 INC2 ;tmp/pos STA2
+    .Console/read DEI LIT 'R EQU ;parse-terminal-size JCN2
+    BRK
+
+@parse-terminal-size ( -> )
+    LIT2r 0000 LIT2r 0000
+    ;tmp/data LDAk #1b NEQ ,&parse-error JCN ( i ) INC2
+              LDAk LIT '[ NEQ ,&parse-error JCN ( i ) INC2
+    &loop
+        LDAk LIT '; EQU ,&parse-col JCN
+(        #00 #00 DIV )
+        LIT2r 000a MUL2r
+        LDAk LIT '0 SUB #00 SWP STH2 ADD2r
+        INC2 ,&loop JMP
+    &parse-col
+        INC2 STH2r ;term/rows STA2
+    &loop2
+        LDAk LIT 'R EQU ,&done JCN
+        LIT2r 000a MUL2r
+        LDAk LIT '0 SUB #00 SWP STH2 ADD2r
+        INC2 ,&loop2 JMP
+    &done
+        STH2r ;term/cols STA2 POP2
+        ;on-key .Console/vector DEO2
+        ;draw-all JSR2
+        BRK
+    &parse-error LDAk #00 #00 DIV
+
 @draw-cursor
     ansi        ;get-row JSR2 INC ;emit-dec JSR2
     LIT '; emit ;get-col JSR2 INC ;emit-dec JSR2
@@ -274,12 +341,6 @@
           ;buffer/limit STA2  ( )
     JMP2r
 
-@input-error "input 20 "error 00
-@demo-path "math32.tal 00
-
-( col is 0-79, row is 0-23 )
-@cursor [ &col 00 &row 00 ]
-
 @get-col
     ;cursor/col LDA ;cur-len JSR2 NIP ;min JSR2 JMP2r
 
@@ -316,6 +377,19 @@
     &do2 #0a ;mod-div JSR2 ;emit-digit JSR2
     &do1                   ;emit-digit JSR2 JMP2r
 
+@tmp [ &pos :buffer/data &data $100 ]
+( @term [ &cols $2 &rows $2 ] )
+@term [ &cols 0050 &rows 0018 ]
+
+@input-error "input 20 "error 00
+@demo-path "math32.tal 00
+
+( col is 0-79, row is 0-23 )
+@cursor [ &col 00 &row 00 ]
+
+( did we just see ESC? )
+@saw-esc 00
+
 |1ffc
 ( offset is address of the first visible line )
 ( size is total size of data in bytes )