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  1.  Home
  2. LINUX5250
  3. April 2003

Re: How to remap keyboard

First, here's a link I used on creating a patch
<http://www.kegel.com/academy/opensource.html>
I used Cygwin diff to create the patch, specifying the original source tree
first.
This is my first C code in many years, so I know I'll need some pointers.
Did I just say that?  Here's the patch:

Only in /cygdrive/c/tn5250/tn5250-0.16.5: Makefile
diff -bur /cygdrive/c/buck/cvs/tn5250/src/dbuffer.c
/cygdrive/c/tn5250/tn5250-0.16.5/src/dbuffer.c
--- /cygdrive/c/buck/cvs/tn5250/src/dbuffer.c   2002-03-20
02:50:36.000000000 -0500
+++ /cygdrive/c/tn5250/tn5250-0.16.5/src/dbuffer.c      2003-04-07
16:32:10.000000000 -0400
@@ -770,3 +770,107 @@
    ASSERT_VALID(This);
 }
 
+/* beginning of previous field - Buck */
+/****f* lib5250/tn5250_dbuffer_prevfld
+ * NAME
+ *    tn5250_dbuffer_prevfld
+ * SYNOPSIS
+ *    tn5250_dbuffer_prevfld (This);
+ * INPUTS
+ *    Tn5250DBuffer *      This       -
+ * DESCRIPTION
+ *    Move the cursor backward to the beginning of the previous non-blank
+ *    or input field.  The intent is to emulate the dbuffer_prevword
function
+ *    and add the additional functionality of stopping at a (possibly
blank)
+ *    input-capable field as well.
+ *****/
+void tn5250_dbuffer_prevfld(Tn5250DBuffer * This)
+{
+   int foundblank=0;
+   int state=0;
+   int maxiter;
+   Tn5250Field *field;
+
+   TN5250_LOG (("dbuffer_prevfld: entered.\n"));
+
+   maxiter = (This->w * This->h);
+   TN5250_ASSERT(maxiter>0);
+
+   while (--maxiter) {
+        tn5250_dbuffer_left(This);
+
+        /* If at the start of a field, exit */
+        field = tn5250_display_current_field(This);
+        if ((field != NULL) &&
+             (tn5250_field_start_row(field) == This->cy) &&
+             (tn5250_field_start_col(field) == This->cx))
+        {
+           break;
+        }
+
+        switch (state) {
+           case 0:
+              if (This->data[This->cy * This->w + This->cx] <= 0x40)
state++;
+              break;
+           case 1:
+              if (This->data[This->cy * This->w + This->cx] > 0x40)
state++;
+              break;
+           case 2:
+              if (This->data[This->cy * This->w + This->cx] <= 0x40) {
+                   tn5250_dbuffer_right(This, 1);
+                   return;
+              }
+              break;
+        }
+   }
+
+}
+
+/* beginning of next field - Buck */
+/****f* lib5250/tn5250_dbuffer_nextfld
+ * NAME
+ *    tn5250_dbuffer_nextfld
+ * SYNOPSIS
+ *    tn5250_dbuffer_nextfld (This);
+ * INPUTS
+ *    Tn5250DBuffer *      This       -
+ * DESCRIPTION
+ *    Move the cursor forward to the beginning of the next non-blank
+ *    or input field.  The intent is to emulate the dbuffer_nextword
function
+ *    and add the additional functionality of stopping at a (possibly
blank)
+ *    input-capable field as well.
+ *****/
+void tn5250_dbuffer_nextfld(Tn5250DBuffer * This)
+{
+   int foundblank=0;
+   int maxiter;
+   Tn5250Field *field;
+   int gx, gy;
+
+   TN5250_LOG (("dbuffer_nextfld: entered.\n"));
+
+   maxiter = (This->w * This->h);
+   TN5250_ASSERT(maxiter>0);
+
+   while (--maxiter) {
+      tn5250_dbuffer_right(This, 1);
+      if (This->data[This->cy * This->w + This->cx] <= 0x40) foundblank++;
+
+      /* If found a blank previously and a non-blank now, exit */
+      if ((foundblank) && (This->data[This->cy * This->w + This->cx] >
0x40)) {
+           break;
+      }
+
+      /* If at the start of a field, exit */
+      field = tn5250_display_current_field(This);
+      if ((field != NULL) &&
+           (tn5250_field_start_row(field) == This->cy) &&
+           (tn5250_field_start_col(field) == This->cx))
+      {
+         break;
+      }
+   }
+
+   ASSERT_VALID(This);
+}
+
diff -bur /cygdrive/c/buck/cvs/tn5250/src/display.c
/cygdrive/c/tn5250/tn5250-0.16.5/src/display.c
--- /cygdrive/c/buck/cvs/tn5250/src/display.c   2002-08-01
16:40:50.000000000 -0400
+++ /cygdrive/c/tn5250/tn5250-0.16.5/src/display.c      2003-04-04
14:34:28.000000000 -0500
@@ -1010,6 +1010,16 @@
       tn5250_display_kf_prevword(This);
       break;
 
+   /* beginning of next field - Buck */
+   case K_NEXTFLD:
+      tn5250_display_kf_nextfld(This);
+      break;
+
+   /* beginning of previous field - Buck */
+   case K_PREVFLD:
+      tn5250_display_kf_prevfld(This);
+      break;
+
    case K_FIELDHOME:
       tn5250_display_kf_fieldhome(This);
       break;
@@ -1681,6 +1691,40 @@
       tn5250_dbuffer_nextword(This->display_buffers);
 }
 
+/* beginning of previous field - Buck */
+/****f* lib5250/tn5250_display_kf_prevfld
+ * NAME
+ *    tn5250_display_kf_prevfld
+ * SYNOPSIS
+ *    tn5250_display_kf_prevfld (This);
+ * INPUTS
+ *    Tn5250Display *      This       -
+ * DESCRIPTION
+ *    Move cursor to the last non-blank character or
+ *    input-capable field.
+ *****/
+void tn5250_display_kf_prevfld (Tn5250Display *This)
+{
+      tn5250_dbuffer_prevfld(This->display_buffers);
+}
+
+/* beginning of next field - Buck */
+/****f* lib5250/tn5250_display_kf_nextfld
+ * NAME
+ *    tn5250_display_kf_nextfld
+ * SYNOPSIS
+ *    tn5250_display_kf_nextfld (This);
+ * INPUTS
+ *    Tn5250Display *      This       -
+ * DESCRIPTION
+ *    Move cursor to the next non-blank character or
+ *    input-capable field.
+ *****/
+void tn5250_display_kf_nextfld (Tn5250Display *This)
+{
+      tn5250_dbuffer_nextfld(This->display_buffers);
+}
+
 /****f* lib5250/tn5250_display_kf_fieldhome
  * NAME
  *    tn5250_display_kf_fieldhome
diff -bur /cygdrive/c/buck/cvs/tn5250/src/display.h
/cygdrive/c/tn5250/tn5250-0.16.5/src/display.h
--- /cygdrive/c/buck/cvs/tn5250/src/display.h   2002-08-01
16:40:50.000000000 -0400
+++ /cygdrive/c/tn5250/tn5250-0.16.5/src/display.h      2003-04-04
14:32:06.000000000 -0500
@@ -156,6 +156,10 @@
 extern void      tn5250_display_kf_delete            (Tn5250Display *This);
 extern void      tn5250_display_kf_prevword          (Tn5250Display *This);
 extern void      tn5250_display_kf_nextword          (Tn5250Display *This);
+/* beginning of previous field - Buck */
+extern void      tn5250_display_kf_prevfld           (Tn5250Display *This);
+/* beginning of next field - Buck */
+extern void      tn5250_display_kf_nextfld           (Tn5250Display *This);
 extern void      tn5250_display_kf_fieldhome         (Tn5250Display *This);
 extern void      tn5250_display_kf_newline           (Tn5250Display *This);
 
diff -bur /cygdrive/c/buck/cvs/tn5250/src/terminal.h
/cygdrive/c/tn5250/tn5250-0.16.5/src/terminal.h
--- /cygdrive/c/buck/cvs/tn5250/src/terminal.h  2002-04-01
03:21:16.000000000 -0500
+++ /cygdrive/c/tn5250/tn5250-0.16.5/src/terminal.h     2003-04-04
14:32:40.000000000 -0500
@@ -99,6 +99,10 @@
 #define K_FIELDPLUS     0520    /* curses KEY_SF */
 #define K_PREVWORD     0611    /* curses KEY_SLEFT (as good as any) */
 #define K_NEXTWORD     0622    /* curses KEY_SRIGHT (as good as any) */
+/* beginning of previous field - Buck */
+#define K_PREVFLD         0xfffb  /* no similar curses key */
+/* beginning of next field - Buck */
+#define K_NEXTFLD         0xfffc  /* no similar curses key */
 #define K_FIELDHOME    0607    /* curses KEY_SHOME (as good as any) */
 #define K_COPY_TEXT     0xfffd  /* no similar curses key */
 #define K_PASTE_TEXT    0xfffe  /* no similar curses key */
Only in /cygdrive/c/tn5250/tn5250-0.16.5: tn5250rc
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: AUTHORS.txt
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: COPYING.txt
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: Makefile
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: buffer.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: conf.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: config.h
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: cursesterm.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: dbuffer.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: debug.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: dftmap.exe
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: dftmap.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: display.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: field.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: lib5250.a
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: lib5250.def
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: lib5250.dll
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: lp5250d-win.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: lp5250d.exe
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: mkconfig.exe
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: printsession.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: record.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: scs.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: session.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: slangterm.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: sslstream.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: stream.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: telnetstr.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: tn5250-config.h
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: tn5250-res.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: tn5250-win.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: tn5250.exe
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: tn5250_innosetup.iss
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: tn5250rc
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: utility.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: version.o
diff -bur /cygdrive/c/buck/cvs/tn5250/win32/winterm.c
/cygdrive/c/tn5250/tn5250-0.16.5/win32/winterm.c
--- /cygdrive/c/buck/cvs/tn5250/win32/winterm.c 2002-04-29
19:48:28.000000000 -0400
+++ /cygdrive/c/tn5250/tn5250-0.16.5/win32/winterm.c    2003-04-04
15:18:53.000000000 -0500
@@ -239,6 +239,7 @@
 
 static keystroke_to_msg keydown2msg[] =
 {
+/* Buck adds definitions for NEXTFLD, PREVFLD and NEWLINE */
 /*  KeyState    Win32 VirtKey    5250 key   ctx ext  */
    { VK_SHIFT,   VK_TAB,          K_BACKTAB, 0, 0 },
    { VK_SHIFT,   VK_F1,           K_F13    , 0, 0 },   
@@ -255,6 +256,9 @@
    { VK_SHIFT,   VK_F12,          K_F24    , 0, 0 },   
    { VK_SHIFT,   VK_INSERT,       K_PASTE_TEXT, 0, 1 },   
    { VK_SHIFT,   VK_DELETE,       K_COPY_TEXT, 0, 1 },   
+   { VK_CONTROL, VK_LEFT,         K_PREVFLD, 0, 1 },
+   { VK_CONTROL, VK_RIGHT,        K_NEXTFLD, 0, 1 },
+   { VK_SHIFT,    K_ENTER,        K_NEWLINE, 0, 1 },
    { 0,          VK_F1,           K_F1     , 0, 0 },   
    { 0,          VK_F2,           K_F2     , 0, 0 },   
    { 0,          VK_F3,           K_F3     , 0, 0 },   
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: winterm.o
Only in /cygdrive/c/tn5250/tn5250-0.16.5/win32: wtd.o

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