From 6b0a4ed26a9197b18f983317c5deed53d2206f43 Mon Sep 17 00:00:00 2001
From: "B. Watson" <yalhcru@gmail.com>
Date: Sat, 16 Mar 2019 06:09:59 -0400
Subject: nick completion with Tab key

---
 src/features.h   |   4 +++
 src/fujichat.atr | Bin 92176 -> 92176 bytes
 src/fujichat.c   |  88 ++++++++++++++++++++++++++++++++++++++++++++++++++-----
 src/fujitest.atr | Bin 92176 -> 92176 bytes
 4 files changed, 85 insertions(+), 7 deletions(-)

diff --git a/src/features.h b/src/features.h
index 90f0cd9..822d8e7 100644
--- a/src/features.h
+++ b/src/features.h
@@ -28,6 +28,7 @@
 #undef FEAT_ATRACT_AWAY
 #undef FEAT_KEYBOARD_BUFFER
 #undef FEAT_COLOR_COMMAND
+#undef FEAT_NICK_COMPLETE
 
 #elif defined(FEAT_COL80_HACK)
 
@@ -37,6 +38,7 @@
 // #define FEAT_TRAFFIC_INDICATOR
 #define FEAT_KEYBOARD_BUFFER
 #define FEAT_COLOR_COMMAND
+#undef FEAT_NICK_COMPLETE
 
 /* COL80 hack uses 9K of high RAM, so let's disable
 	some bells & whistles. */
@@ -101,5 +103,7 @@
 
 /* End of features */
 
+#define FEAT_NICK_COMPLETE
+
 #endif
 #endif
diff --git a/src/fujichat.atr b/src/fujichat.atr
index df4ebd6..8a2a997 100644
Binary files a/src/fujichat.atr and b/src/fujichat.atr differ
diff --git a/src/fujichat.c b/src/fujichat.c
index 3d61a09..5d47387 100644
--- a/src/fujichat.c
+++ b/src/fujichat.c
@@ -136,6 +136,13 @@ struct telnet_state *tstate; /* ../apps/telnet.h */
 struct timer vbell_timer;
 #endif
 
+#ifdef FEAT_NICK_COMPLETE
+#define NICK_LIST_SIZE 20
+void nick_completion(void);
+void add_to_nick_list(char *);
+static char nick_list[NICK_LIST_SIZE][NICKLEN+1];
+#endif
+
 /*---------------------------------------------------------------------------*/
 void main(void) {
 #ifdef FEAT_DYNAMIC_VERSION
@@ -194,6 +201,8 @@ void main(void) {
 
 		if(strcasecmp(cmdbuf, "d") == 0) {
 			exit(0);
+		} else if(strcasecmp(cmdbuf, "r") == 0) {
+			(void)atari_exec("D:FUJICHAT.COM");
 		} else if(strcasecmp(cmdbuf, "s") == 0) {
 			i = atari_exec(SETUP_FILENAME);
 			printf("Error %d!\n", i);
@@ -526,7 +535,11 @@ static void handle_keystroke(void) {
 		c = NL;
 		send_buf = 1;
 	} else if(c == A_TAB) {
+#ifdef FEAT_NICK_COMPLETE
+		nick_completion();
+#else
 		c = TAB;
+#endif
 	}
 // #ifdef FEAT_COL80_HACK
 	// else { col80_cursor(); }
@@ -813,8 +826,16 @@ void do_msg() {
 				output_buf[output_buf_len - 2] = A_EOL;
 				output_buf[output_buf_len - 1] = '\0';
 				printf("* %s %s", nick, msg + 8);
+#ifdef FEAT_NICK_COMPLETE
+				add_to_nick_list(nick);
+#endif
 			} else {
 				printf("%s %s", nick, msg);
+#ifdef FEAT_NICK_COMPLETE
+				nick++;
+				bang[0] = '\0';
+				add_to_nick_list(nick);
+#endif
 			}
 		} else {
 			// privmsg, is to our nick
@@ -1014,18 +1035,71 @@ void resolv_found(char *name, u16_t *ipaddr) {
 		done = 1;
 	} else {
 		printf("%s is %s\n", name, format_ip((uip_ipaddr_t *)ipaddr));
-		/*
-		printf("Found name '%s' = %d.%d.%d.%d\n", name,
-				htons(ipaddr[0]) >> 8,
-				htons(ipaddr[0]) & 0xff,
-				htons(ipaddr[1]) >> 8,
-				htons(ipaddr[1]) & 0xff);
-				*/
 		if(!connected)
 			(void)uip_connect((uip_ipaddr_t *)ipaddr, htons(config->server_port));
 	}
 }
 
+#ifdef FEAT_NICK_COMPLETE
+/* nick completion: if the cursor is at the end of a word, search backwards
+	to the previous space or the beginning of the line to find the start
+	of the search term. Then search for that term in the nick list. If
+	we find anything, truncate the input buffer at the start of the search
+	term, then append whatever we found. */
+
+void add_to_nick_list(char *nick) {
+	int i;
+	for(i=0; i<NICK_LIST_SIZE; i++) {
+		if(strcmp(nick, nick_list[i]) == 0) {
+			/* already in list */
+			return;
+		}
+	}
+
+	for(i=0; i<NICK_LIST_SIZE; i++) {
+		if(nick_list[i][0] == '\0') {
+			/* found empty slot, add it here */
+			strcpy(nick_list[i], nick);
+			return;
+		}
+	}
+
+	/* list full, replace 1st element (FIXME: *very* naive strategy) */
+	strcpy(nick_list[0], nick);
+}
+
+void nick_completion(void) {
+	static char term[NICKLEN+1];
+	static char result[NICKLEN+1];
+	int len = 0;
+	int i;
+	char *start = input_buf + input_buf_len;
+
+	while(start > input_buf && start[-1] != ' ' && len < NICKLEN) {
+		start--;
+		len++;
+		fuji_putchar(A_BS);
+	}
+	if(len == 0) return;
+	input_buf_len -= len;
+
+	for(i=0; i<len; i++) {
+		term[i] = start[i];
+	}
+	term[i] = '\0';
+
+	for(i=0; i<NICK_LIST_SIZE; i++) {
+		if(strnicmp(term, nick_list[i], len) == 0) {
+			strcpy(input_buf + input_buf_len, nick_list[i]);
+			input_buf_len += strlen(nick_list[i]);
+			del_user_buffer();
+			redraw_user_buffer();
+		}
+	}
+
+}
+#endif
+
 #ifdef FEAT_LOGGING
 
 /* 0x100 * 32 = 8K (but we likely won't get that much) */
diff --git a/src/fujitest.atr b/src/fujitest.atr
index cd85879..4b178d3 100644
Binary files a/src/fujitest.atr and b/src/fujitest.atr differ
-- 
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