From 38ad5c67e18dbbdf61bed21b7592eb4e71ffa71e Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Mon, 10 Nov 2014 15:14:25 -0600
Subject: BAS: Add support for color command

---
 apps/interpreters/bas/fs.c    | 29 +++++++++++++++++++-----
 apps/interpreters/bas/main.c  |  1 +
 apps/interpreters/bas/vt100.c | 52 +++++++++++++++++++++++++++++++++++++++++--
 apps/interpreters/bas/vt100.h | 20 +++++++++++++++++
 4 files changed, 95 insertions(+), 7 deletions(-)

diff --git a/apps/interpreters/bas/fs.c b/apps/interpreters/bas/fs.c
index 9f3489755..79834bf10 100644
--- a/apps/interpreters/bas/fs.c
+++ b/apps/interpreters/bas/fs.c
@@ -79,6 +79,7 @@
 #include <unistd.h>
 
 #include <nuttx/ascii.h>
+#include <nuttx/vt100.h>
 
 #include "vt100.h"
 #include "fs.h"
@@ -102,6 +103,14 @@ static int g_used;
 static const int g_open_mode[4] = { 0, O_RDONLY, O_WRONLY, O_RDWR };
 static char g_errmsgbuf[80];
 
+#ifdef CONFIG_INTERPREPTER_BAS_VT100
+static const uint8_t g_vt100_colormap[8] =
+{
+  VT100_BLACK, VT100_BLUE,   VT100_GREEN,  VT100_CYAN,
+  VT100_RED,  VT100_MAGENTA, VT100_YELLOW, VT100_WHITE
+};
+#endif
+
 /****************************************************************************
  * Public Data
  ****************************************************************************/
@@ -411,18 +420,28 @@ static int locate(int chn, int line, int column)
 static int colour(int chn, int foreground, int background)
 {
 #ifdef CONFIG_INTERPREPTER_BAS_VT100
-      /* REVISIT: Use VT100 commands to color */
-#warning Missing Logic
-#endif
+  if (foreground >= 0)
+    {
+      vt100_foreground_color(chn, foreground);
+    }
+
+  if (background >= 0)
+    {
+      vt100_background_color(chn, background);
+    }
+
+  return 0;
+#else
   FS_errmsg = _("Set color operation no implemented");
   return -1;
+#endif
 }
 
 static int resetcolour(int chn)
 {
 #ifdef CONFIG_INTERPREPTER_BAS_VT100
-      /* REVISIT: Use VT100 commands to reset color */
-#warning Missing Logic
+  vt100_foreground_color(chn, VT100_DEFAULT);
+  vt100_background_color(chn, VT100_DEFAULT);
 #endif
   return 0;
 }
diff --git a/apps/interpreters/bas/main.c b/apps/interpreters/bas/main.c
index fce6dd672..bf8dd4e65 100644
--- a/apps/interpreters/bas/main.c
+++ b/apps/interpreters/bas/main.c
@@ -69,6 +69,7 @@
 #include <string.h>
 #include <stdlib.h>
 
+#include "fs.h"
 #include "bas.h"
 
 /****************************************************************************
diff --git a/apps/interpreters/bas/vt100.c b/apps/interpreters/bas/vt100.c
index 45bee9852..592db95ec 100644
--- a/apps/interpreters/bas/vt100.c
+++ b/apps/interpreters/bas/vt100.c
@@ -75,7 +75,9 @@ static const char g_reverseoff[]    = VT100_REVERSEOFF;
 static const char g_blinkoff[]      = VT100_BLINKOFF;
 #endif
 
-static const char g_fmtcursorpos[]  = VT100_FMT_CURSORPOS;
+static const char g_fmt_cursorpos[] = VT100_FMT_CURSORPOS;
+static const char g_fmt_forecolor[] = VT100_FMT_FORE_COLOR;
+static const char g_fmt_backcolor[] = VT100_FMT_BACK_COLOR;
 
 /****************************************************************************
  * Private Functions
@@ -235,7 +237,7 @@ void vt100_setcursor(int chn, uint16_t row, uint16_t column)
 
   /* Format the cursor position command.  The origin is (1,1). */
 
-  len = snprintf(buffer, 16, g_fmtcursorpos, row + 1, column + 1);
+  len = snprintf(buffer, 16, g_fmt_cursorpos, row + 1, column + 1);
 
   /* Send the VT100 CURSORPOS command */
 
@@ -317,3 +319,49 @@ void vt100_scrolldown(int chn, uint16_t nlines)
       vt100_write(chn, g_revindex, sizeof(g_revindex));
     }
 #endif
+
+/****************************************************************************
+ * Name: vt100_foreground_color
+ *
+ * Description:
+ *   Set the foreground color
+ *
+ ****************************************************************************/
+
+void vt100_foreground_color(int chn, uint8_t color)
+{
+  char buffer[16];
+  int len;
+
+  /* Format the foreground color command. */
+
+  DEBUGASSERT(color < 10);
+  len = snprintf(buffer, 16, g_fmt_forecolor, color);
+
+  /* Send the VT100 foreground color command */
+
+  vt100_write(chn, buffer, len);
+}
+
+/****************************************************************************
+ * Name: vt100_background_color
+ *
+ * Description:
+ *   Set the background color
+ *
+ ****************************************************************************/
+
+void vt100_background_color(int chn, uint8_t color)
+{
+  char buffer[16];
+  int len;
+
+  /* Format the background color command. */
+
+  DEBUGASSERT(color < 10);
+  len = snprintf(buffer, 16, g_fmt_backcolor, color);
+
+  /* Send the VT100 background color command */
+
+  vt100_write(chn, buffer, len);
+}
diff --git a/apps/interpreters/bas/vt100.h b/apps/interpreters/bas/vt100.h
index 28fb227ed..32dbb683f 100644
--- a/apps/interpreters/bas/vt100.h
+++ b/apps/interpreters/bas/vt100.h
@@ -209,6 +209,26 @@ void vt100_scrollup(int chn, uint16_t nlines);
 void vt100_scrolldown(int chn, uint16_t nlines);
 #endif
 
+/****************************************************************************
+ * Name: vt100_foreground_color
+ *
+ * Description:
+ *   Set the foreground color
+ *
+ ****************************************************************************/
+
+void vt100_foreground_color(int chn, uint8_t color);
+
+/****************************************************************************
+ * Name: vt100_background_color
+ *
+ * Description:
+ *   Set the background color
+ *
+ ****************************************************************************/
+
+void vt100_background_color(int chn, uint8_t color);
+
 #undef EXTERN
 #ifdef __cplusplus
 }
-- 
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