groundwork for 256 color parsing, added conceal

user/apars_csi.c

@@ -542,8 +542,36 @@ do_csi_sgr(CSI_Data *opts)
 			// -- set color --
 		else if (n >= SGR_FG_START && n <= SGR_FG_END) screen_set_fg((Color) (n - SGR_FG_START)); // ANSI normal fg
 		else if (n >= SGR_BG_START && n <= SGR_BG_END) screen_set_bg((Color) (n - SGR_BG_START)); // ANSI normal bg
+			//  AIX bright colors --
+		else if (n >= SGR_FG_BRT_START && n <= SGR_FG_BRT_END) screen_set_fg((Color) ((n - SGR_FG_BRT_START) + 8)); // AIX bright fg
+		else if (n >= SGR_BG_BRT_START && n <= SGR_BG_BRT_END) screen_set_bg((Color) ((n - SGR_BG_BRT_START) + 8)); // AIX bright bg
+			// reset color
 		else if (n == SGR_FG_DEFAULT) screen_set_fg(termconf_scratch.default_fg); // default fg
 		else if (n == SGR_BG_DEFAULT) screen_set_bg(termconf_scratch.default_bg); // default bg
+			// 256 colors
+		else if (n == SGR_FG_256 || n == SGR_BG_256) {
+			if (i < count-2) {
+				if (opts->n[i + 1] == 5) {
+					int color = opts->n[i + 2];
+					bool fg = n == SGR_FG_256;
+					if (fg) {
+						screen_set_fg_ext(color);
+					} else  {
+						screen_set_bg_ext(color);
+					}
+				}
+				else {
+					ansi_warn("SGR syntax err");
+					apars_show_context();
+					break; // abandon further
+				}
+				i += 2;
+			} else {
+				ansi_warn("SGR syntax err");
+				apars_show_context();
+				break; // abandon further
+			}
+		}
 			// -- set attr --
 		else if (n == SGR_BOLD) screen_set_sgr(ATTR_BOLD, 1);
 		else if (n == SGR_FAINT) screen_set_sgr(ATTR_FAINT, 1);
@@ -553,6 +581,7 @@ do_csi_sgr(CSI_Data *opts)
 		else if (n == SGR_STRIKE) screen_set_sgr(ATTR_STRIKE, 1);
 		else if (n == SGR_FRAKTUR) screen_set_sgr(ATTR_FRAKTUR, 1);
 		else if (n == SGR_INVERSE) screen_set_sgr_inverse(1);
+		else if (n == SGR_CONCEAL) screen_set_sgr_conceal(1);
 			// -- clear attr --
 		else if (n == SGR_OFF(SGR_BOLD)) screen_set_sgr(ATTR_BOLD, 0); // can also mean "Double Underline"
 		else if (n == SGR_OFF(SGR_FAINT)) screen_set_sgr(ATTR_FAINT | ATTR_BOLD, 0); // "normal"
@@ -561,9 +590,7 @@ do_csi_sgr(CSI_Data *opts)
 		else if (n == SGR_OFF(SGR_BLINK)) screen_set_sgr(ATTR_BLINK, 0);
 		else if (n == SGR_OFF(SGR_STRIKE)) screen_set_sgr(ATTR_STRIKE, 0);
 		else if (n == SGR_OFF(SGR_INVERSE)) screen_set_sgr_inverse(0);
-			// -- AIX bright colors --
-		else if (n >= SGR_FG_BRT_START && n <= SGR_FG_BRT_END) screen_set_fg((Color) ((n - SGR_FG_BRT_START) + 8)); // AIX bright fg
-		else if (n >= SGR_BG_BRT_START && n <= SGR_BG_BRT_END) screen_set_bg((Color) ((n - SGR_BG_BRT_START) + 8)); // AIX bright bg
+		else if (n == SGR_OFF(SGR_CONCEAL)) screen_set_sgr_conceal(0);
 		else {
 			ansi_noimpl("SGR %d", n);
 		}

user/screen.c

@@ -76,6 +76,7 @@ typedef struct {
 
 	/* SGR */
 	bool inverse; //!< not in attrs bc it's applied server-side (not sent to browser)
+	bool conceal;  //!< similar to inverse, causes all to be replaced by SP
 	u8 attrs;
 	Color fg;     //!< Foreground color for writing
 	Color bg;     //!< Background color for writing
@@ -310,6 +311,7 @@ screen_reset_sgr(void)
 	cursor.bg = termconf->default_bg;
 	cursor.attrs = 0;
 	cursor.inverse = false;
+	cursor.conceal = false;
 }
 
 /**
@@ -1118,6 +1120,24 @@ screen_set_bg(Color color)
 	cursor.bg = color;
 }
 
+/**
+ * Set cursor foreground color, extended
+ */
+void ICACHE_FLASH_ATTR
+screen_set_fg_ext(u16 color)
+{
+	// TODO validate and set
+}
+
+/**
+ * Set cursor background color, extended
+ */
+void ICACHE_FLASH_ATTR
+screen_set_bg_ext(u16 color)
+{
+	// TODO validate and set
+}
+
 void ICACHE_FLASH_ATTR
 screen_set_sgr(u8 attrs, bool ena)
 {
@@ -1135,6 +1155,12 @@ screen_set_sgr_inverse(bool ena)
 	cursor.inverse = ena;
 }
 
+void ICACHE_FLASH_ATTR
+screen_set_sgr_conceal(bool ena)
+{
+	cursor.conceal = ena;
+}
+
 void ICACHE_FLASH_ATTR
 screen_set_charset_n(int Gx)
 {
@@ -1225,6 +1251,10 @@ screen_putchar(const char *ch)
 	// clear "hanging" flag if not possible
 	clear_invalid_hanging();
 
+	if (cursor.conceal) {
+		ch = " ";
+	}
+
 	// Special treatment for CRLF
 	switch (ch[0]) {
 		case CR:

user/screen.h

@@ -235,10 +235,16 @@ typedef uint8_t Color; // 0-16
 void screen_set_fg(Color color);
 /** Set cursor background coloor */
 void screen_set_bg(Color color);
+/** Set cursor foreground color, extended */
+void screen_set_fg_ext(u16 color);
+/** Set cursor background coloor, extended */
+void screen_set_bg_ext(u16 color);
 /** Enable/disable attrs by bitmask */
 void screen_set_sgr(u8 attrs, bool ena);
 /** Set the inverse attribute */
 void screen_set_sgr_inverse(bool ena);
+/** Conceal style */
+void screen_set_sgr_conceal(bool ena);
 /** Reset cursor attribs */
 void screen_reset_sgr(void);
 

user/sgr.h

@@ -14,15 +14,18 @@ enum SGR_CODES {
 	SGR_BLINK = 5,
 	SGR_BLINK_FAST = 6,
 	SGR_INVERSE = 7,
+	SGR_CONCEAL = 8,
 	SGR_STRIKE = 9,
 	SGR_FRAKTUR = 20,
 
 	SGR_FG_START = 30,
 	SGR_FG_END = 37,
 	SGR_FG_DEFAULT = 39,
+	SGR_FG_256 = 38,
 
 	SGR_BG_START = 40,
 	SGR_BG_END = 47,
+	SGR_BG_256 = 48,
 	SGR_BG_DEFAULT = 49,
 
 	SGR_FG_BRT_START = 90,