Added TAB, ICH, and DCH ANSI

src/dev/console.c

@@ -51,6 +51,8 @@ extern void ansi_cud(p_channel chan, short arg_count, short args[]);
 extern void ansi_cup(p_channel chan, short arg_count, short args[]);
 extern void ansi_ed(p_channel chan, short arg_count, short args[]);
 extern void ansi_el(p_channel chan, short arg_count, short args[]);
+extern void ansi_ich(p_channel chan, short arg_count, short args[]);
+extern void ansi_dch(p_channel chan, short arg_count, short args[]);
 
 /*
  * Console variables and constants
@@ -69,6 +71,8 @@ const t_ansi_seq ansi_sequence[] = {
     { "\x1B[#D", ansi_cud },
     { "\x1B[#J", ansi_ed },
     { "\x1B[#K", ansi_el },
+    { "\x1B[#@]", ansi_ich },
+    { "\x1B[#P]", ansi_dch },
     { "\x1B[#;#H", ansi_cup },
     { 0, 0 }
 };
@@ -205,6 +209,36 @@ void ansi_el(p_channel chan, short arg_count, short args[]) {
     text_clear_line(chan->dev, n);
 }
 
+/*
+ * ANSI Handler: insert a character
+ */
+void ansi_ich(p_channel chan, short arg_count, short args[]) {
+    unsigned short n = 2;
+
+    TRACE("ansi_ich");
+
+    if (arg_count > 0) {
+        n = args[0];
+    }
+
+    text_insert(chan->dev, n);
+}
+
+/*
+ * ANSI Handler: delete a character
+ */
+void ansi_dch(p_channel chan, short arg_count, short args[]) {
+    unsigned short n = 2;
+
+    TRACE("ansi_dch");
+
+    if (arg_count > 0) {
+        n = args[0];
+    }
+
+    text_delete(chan->dev, n);
+}
+
 //
 // Initialize the console... nothing needs to happen here
 //

src/dev/text_screen_iii.c

@@ -398,6 +398,50 @@ void text_clear_line(short screen, short mode) {
     }
 }
 
+/*
+ * Insert a number of characters at the cursor position
+ *
+ * Inputs:
+ * screen = the screen number 0 for channel A, 1 for channel B
+ * count = the number of characters to insert
+ */
+void text_insert(short screen, short count) {
+    int i;
+    p_text_channel chan = &text_channel[screen];
+    int eol_index = (chan->y + 1) * chan->columns_max - 1;
+    int cursor_index = chan->y * chan->columns_max + chan->x;
+
+    for (i = cursor_index; i < eol_index; i++) {
+        chan->text_cells[i+1] = chan->text_cells[i];
+        chan->color_cells[i+1] = chan->color_cells[i];
+    }
+
+    chan->text_cells[cursor_index] = ' ';
+    chan->color_cells[cursor_index] = chan->current_color;
+}
+
+/*
+ * Delete a number of characters at the cursor position
+ *
+ * Inputs:
+ * screen = the screen number 0 for channel A, 1 for channel B
+ * count = the number of characters to delete
+ */
+void text_delete(short screen, short count) {
+    int i;
+    p_text_channel chan = &text_channel[screen];
+    int eol_index = (chan->y + 1) * chan->columns_max - 1;
+    int cursor_index = chan->y * chan->columns_max + chan->x;
+
+    for (i = cursor_index; i < eol_index; i++) {
+        chan->text_cells[i] = chan->text_cells[i+1];
+        chan->color_cells[i] = chan->color_cells[i+1];
+    }
+
+    chan->text_cells[eol_index] = ' ';
+    chan->color_cells[eol_index] = chan->current_color;
+}
+
 /*
  * Scroll the text screen up one row
  * Inputs:
@@ -442,6 +486,7 @@ void text_scroll(short screen) {
  */
 void text_put_raw(short screen, char c) {
     if (screen < MAX_TEXT_CHANNELS) {
+        short x, y;
         p_text_channel chan = &text_channel[screen];
 
         switch (c) {
@@ -460,6 +505,12 @@ void text_put_raw(short screen, char c) {
             }
             break;
 
+        case CHAR_TAB:
+            text_get_xy(screen, &x, &y);
+            y = (y & 0x07) + 8;
+            text_set_xy(screen, x, y);
+            break;
+
         default:
             *chan->text_cursor_ptr++ = c;
             *chan->color_cursor_ptr++ = chan->current_color;

src/dev/text_screen_iii.h

@@ -95,6 +95,24 @@ extern void text_clear(short screen, short mode);
  */
 extern text_clear_line(short screen, short mode);
 
+/*
+ * Insert a number of characters at the cursor position
+ *
+ * Inputs:
+ * screen = the screen number 0 for channel A, 1 for channel B
+ * count = the number of characters to insert
+ */
+extern void text_insert(short screen, short count);
+
+/*
+ * Delete a number of characters at the cursor position
+ *
+ * Inputs:
+ * screen = the screen number 0 for channel A, 1 for channel B
+ * count = the number of characters to delete
+ */
+extern void text_delete(short screen, short count);
+
 /*
  * Scroll the text screen up one row
  * Inputs:

src/include/constants.h

@@ -10,15 +10,16 @@
  * Miscellaneous definitions
  */
 
-#define MAX_TRIES_BUSY  10000   // The maximum number of times to check for an operation to complete (general purpose)
+#define MAX_TRIES_BUSY  10000   /* The maximum number of times to check for an operation to complete (general purpose) */
 
 /*
  * Definitions of special characters
  */
 
-#define CHAR_ESC '\x1B'         // Escape character
-#define CHAR_CR '\x0D'          // Carriage return
-#define CHAR_NL '\x0A'          // Newline character
-#define CHAR_BS '\b'            // Backspace
+#define CHAR_ESC    '\x1B'  /* Escape character */
+#define CHAR_TAB    '\t'    /* Vertical tab */
+#define CHAR_CR     '\x0D'  /* Carriage return */
+#define CHAR_NL     '\x0A'  /* Linefeed */
+#define CHAR_BS     '\b'    /* Backspace */
 
 #endif