refactor chat history to allow scrolling

build/Makefile.am

@@ -29,7 +29,9 @@ toxic_SOURCES = $(top_srcdir)/src/main.c \
                 $(top_srcdir)/src/log.c \
                 $(top_srcdir)/src/log.h \
                 $(top_srcdir)/src/file_senders.c \
-                $(top_srcdir)/src/file_senders.h
+                $(top_srcdir)/src/file_senders.h \
+                $(top_srcdir)/src/line_info.c \
+                $(top_srcdir)/src/line_info.h
 
 toxic_CFLAGS =                 -I$(top_srcdir) \
 				$(NCURSES_CFLAGS) \

src/audio_call.c

@@ -252,7 +252,6 @@ void terminate_audio()
         toxav_kill(ASettins.av);
 }
 
-
 int errors()
 {
     return ASettins.errors;

src/chat.c

@@ -34,6 +34,7 @@
 #include "friendlist.h"
 #include "toxic_strings.h"
 #include "log.h"
+#include "line_info.h"
 
 #ifdef _SUPPORT_AUDIO
     #include "audio_call.h"
@@ -98,6 +99,7 @@ void kill_chat_window(ToxWindow *self)
     StatusBar *statusbar = self->stb;
 
     log_disable(ctx->log);
+    line_info_cleanup(ctx->hst);
 
     int f_num = self->num;
     delwin(ctx->linewin);
@@ -106,6 +108,7 @@ void kill_chat_window(ToxWindow *self)
     disable_chatwin(f_num);
 
     free(ctx->log);
+    free(ctx->hst);
     free(ctx);
     free(statusbar);
 }
@@ -121,17 +124,10 @@ static void chat_onMessage(ToxWindow *self, Tox *m, int32_t num, uint8_t *msg, u
     tox_get_name(m, num, nick);
     nick[TOXIC_MAX_NAME_LENGTH] = '\0';
 
-    print_time(ctx->history);
+    uint8_t timefrmt[TIME_STR_SIZE];
-    wattron(ctx->history, COLOR_PAIR(CYAN));
+    get_time_str(timefrmt);
-    wprintw(ctx->history, "%s: ", nick);
-    wattroff(ctx->history, COLOR_PAIR(CYAN));
 
-    if (msg[0] == '>') {
+    line_info_add(self, timefrmt, nick, NULL, msg, IN_MSG, 0, 0);
-        wattron(ctx->history, COLOR_PAIR(GREEN));
-        wprintw(ctx->history, "%s\n", msg);
-        wattroff(ctx->history, COLOR_PAIR(GREEN));
-    } else
-        wprintw(ctx->history, "%s\n", msg);
 
     write_to_log(msg, nick, ctx->log, false);
     alert_window(self, WINDOW_ALERT_1, true);
@@ -172,11 +168,10 @@ static void chat_onAction(ToxWindow *self, Tox *m, int32_t num, uint8_t *action,
     tox_get_name(m, num, nick);
     nick[TOXIC_MAX_NAME_LENGTH] = '\0';
 
-    print_time(ctx->history);
+    uint8_t timefrmt[TIME_STR_SIZE];
-    wattron(ctx->history, COLOR_PAIR(YELLOW));
+    get_time_str(timefrmt);
-    wprintw(ctx->history, "* %s %s\n", nick, action);
-    wattroff(ctx->history, COLOR_PAIR(YELLOW));
 
+    line_info_add(self, timefrmt, nick, NULL, action, ACTION, 0, 0);
     write_to_log(action, nick, ctx->log, true);
     alert_window(self, WINDOW_ALERT_1, true);
 }
@@ -216,16 +211,19 @@ static void chat_onFileSendRequest(ToxWindow *self, Tox *m, int32_t num, uint8_t
     if (self->num != num)
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t msg[MAX_STR_SIZE];
+    uint8_t *errmsg;
 
     uint8_t filename[MAX_STR_SIZE];
     get_file_name(pathname, filename);
 
-    wprintw(ctx->history, "File transfer request for '%s' (%llu bytes).\n", filename, 
+    snprintf(msg, sizeof(msg), "File transfer request for '%s' (%llu bytes).", filename, 
                                                        (long long unsigned int)filesize);
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 
     if (filenum >= MAX_FILES) {
-        wprintw(ctx->history, "Too many pending file requests; discarding.\n");
+        errmsg = "Too many pending file requests; discarding.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
@@ -242,12 +240,14 @@ static void chat_onFileSendRequest(ToxWindow *self, Tox *m, int32_t num, uint8_t
         filename[len + strlen(d)] = '\0';
 
         if (count > 999) {
-            wprintw(ctx->history, "Error saving file to disk.\n");
+            errmsg = "Error saving file to disk.";
+            line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
             return;
         }
     }
 
-    wprintw(ctx->history, "Type '/savefile %d' to accept the file transfer.\n", filenum);
+    snprintf(msg, sizeof(msg), "Type '/savefile %d' to accept the file transfer.", filenum);
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 
     friends[num].file_receiver.pending[filenum] = true;
     strcpy(friends[num].file_receiver.filenames[filenum], filename);
@@ -270,8 +270,8 @@ static void chat_onFileControl(ToxWindow *self, Tox *m, int32_t num, uint8_t rec
     if (self->num != num)
         return;
 
-    ChatContext *ctx = self->chatwin;
     const uint8_t *filename;
+    uint8_t msg[MAX_STR_SIZE] = {0};
 
     if (receive_send == 0)
         filename = friends[num].file_receiver.filenames[filenum];
@@ -280,25 +280,23 @@ static void chat_onFileControl(ToxWindow *self, Tox *m, int32_t num, uint8_t rec
 
     switch (control_type) {
     case TOX_FILECONTROL_ACCEPT:
-        wprintw(ctx->history, "File transfer for '%s' accepted.\n", filename);
+        snprintf(msg, sizeof(msg), "File transfer for '%s' accepted.", filename);
         break;
     /*case TOX_FILECONTROL_PAUSE:
         wprintw(ctx->history, "File transfer for '%s' paused.\n", filename);
         break; */
     case TOX_FILECONTROL_KILL:
-        wprintw(ctx->history, "File transfer for '%s' failed.\n", filename);
+        snprintf(msg, sizeof(msg), "File transfer for '%s' failed.", filename);
-
         if (receive_send == 0)
             chat_close_file_receiver(num, filenum);
-        else
-            chat_close_file_receiver(num, filenum);
         break;
     case TOX_FILECONTROL_FINISHED:
-        wprintw(ctx->history, "File transfer for '%s' complete.\n", filename);
+        snprintf(msg, sizeof(msg), "File transfer for '%s' complete.", filename);
         chat_close_file_receiver(num, filenum);
         break;
     }
 
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
     alert_window(self, WINDOW_ALERT_2, true);
 }
 
@@ -308,12 +306,9 @@ static void chat_onFileData(ToxWindow *self, Tox *m, int32_t num, uint8_t filenu
     if (self->num != num)
         return;
 
-    ChatContext *ctx = self->chatwin;
-
     if (fwrite(data, length, 1, friends[num].file_receiver.files[filenum]) != 1) {
-        wattron(ctx->history, COLOR_PAIR(RED));
+        uint8_t *msg = " * Error writing to file.";
-        wprintw(ctx->history, "* Error writing to file.\n");
+        line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, RED);
-        wattroff(ctx->history, COLOR_PAIR(RED));
 
         tox_file_send_control(m, num, 1, filenum, TOX_FILECONTROL_KILL, 0, 0);
         chat_close_file_receiver(num, filenum);
@@ -325,16 +320,17 @@ static void chat_onGroupInvite(ToxWindow *self, Tox *m, int32_t friendnumber, ui
     if (self->num != friendnumber)
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t name[TOX_MAX_NAME_LENGTH];
-    uint8_t name[TOX_MAX_NAME_LENGTH] = {'\0'};
+    uint8_t msg[MAX_STR_SIZE];
 
     if (tox_get_name(m, friendnumber, name) == -1)
         return;
 
-    wprintw(ctx->history, "%s has invited you to a group chat.\n", name);
+    snprintf(msg, sizeof(msg), "%s has invited you to a group chat.\n"
+                               "Type \"/join\" to join the chat.", name);
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 
     memcpy(friends[friendnumber].pending_groupchat, group_pub_key, TOX_CLIENT_ID_SIZE);
-    wprintw(ctx->history, "Type \"/join\" to join the chat.\n");
     alert_window(self, WINDOW_ALERT_2, true);
 }
 
@@ -346,111 +342,111 @@ void chat_onInvite (ToxWindow *self, ToxAv *av)
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg = "Incoming audio call!\nType: \"/answer\" or \"/cancel\"";
-    
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
-    wprintw(ctx->history, "Incoming audio call!\n"
-                          "Answer: \"/answer\" \"/cancel\"\n");
     
     alert_window(self, WINDOW_ALERT_0, true);
 }
+
 void chat_onRinging (ToxWindow *self, ToxAv *av)
 {
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg = "Ringing...\n\"/cancel\" ?";
-    
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
-    wprintw(ctx->history, "Ringing...\n"
-                          "\"/cancel\" ?\n");
 }
+
 void chat_onStarting (ToxWindow *self, ToxAv *av)
 {
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg;
 
     if ( 0 != start_transmission() ) {/* YEAH! */
-        wprintw(ctx->history, "Error starting transmission!\n");
+        msg = "Error starting transmission!";
+        line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
         return;
     }
 
-    wprintw(ctx->history, "Call started! \n"
+    msg = "Call started!\nType: \"/hangup\" to end it.";
-                          "Type: \"/hangup\" to end it.\n");
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
-    
 }
+
 void chat_onEnding (ToxWindow *self, ToxAv *av)
 {
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg = "Call ended!";
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 
     toxav_kill_transmission(av);
-    
-    wprintw(ctx->history, "Call ended! \n");
 }
+
 void chat_onError (ToxWindow *self, ToxAv *av)
 {
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg = "Error!";
-    
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
-    wprintw(ctx->history, "Error! \n");
 }
+
 void chat_onStart (ToxWindow *self, ToxAv *av)
 {    
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg;
 
     if ( 0 != start_transmission() ) {/* YEAH! */
-        wprintw(ctx->history, "Error starting transmission!\n");
+        msg = "Error starting transmission!";
+        line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
         return;
     }
 
-    wprintw(ctx->history, "Call started! \n"
+    msg = "Call started!\nType: \"/hangup\" to end it.";
-                          "Type: \"/hangup\" to end it.\n");
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 }
+
 void chat_onCancel (ToxWindow *self, ToxAv *av)
 {
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg = "Call canceled!";
-    
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
-    wprintw(ctx->history, "Call canceled! \n");
 }
+
 void chat_onReject (ToxWindow *self, ToxAv *av)
 {
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg = "Rejected!";
-    
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
-    wprintw(ctx->history, "Rejected! \n");
 }
+
 void chat_onEnd (ToxWindow *self, ToxAv *av)
 {
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
-    
     toxav_kill_transmission(av);
 
-    wprintw(ctx->history, "Call ended! \n");
+    uint8_t *msg = "Call ended!";
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 }
+
 void chat_onRequestTimeout (ToxWindow *self, ToxAv *av)
 {
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg = "No answer!";
-    
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
-    wprintw(ctx->history, "No answer! \n");
 }
 
 void chat_onPeerTimeout (ToxWindow *self, ToxAv *av)
@@ -458,31 +454,27 @@ void chat_onPeerTimeout (ToxWindow *self, ToxAv *av)
     if (self->num != toxav_get_peer_id(av, 0))
         return;
 
-    ChatContext *ctx = self->chatwin;
+    uint8_t *msg = "Peer disconnected; call ended!";
-    
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
-    wprintw(ctx->history, "Peer disconnected; call ended! \n");
 }
 
 #endif /* _SUPPORT_AUDIO */
 
 static void send_action(ToxWindow *self, ChatContext *ctx, Tox *m, uint8_t *action) {
-    if (action == NULL) {
+    if (action == NULL)
-        wprintw(ctx->history, "Invalid syntax.\n");
         return;
-    }
 
     uint8_t selfname[TOX_MAX_NAME_LENGTH];
     tox_get_self_name(m, selfname);
 
-    print_time(ctx->history);
+    uint8_t timefrmt[TIME_STR_SIZE];
-    wattron(ctx->history, COLOR_PAIR(YELLOW));
+    get_time_str(timefrmt);
-    wprintw(ctx->history, "* %s %s\n", selfname, action);
+
-    wattroff(ctx->history, COLOR_PAIR(YELLOW));
+    line_info_add(self, timefrmt, selfname, NULL, action, ACTION, 0, 0);
 
     if (tox_send_action(m, self->num, action, strlen(action) + 1) == 0) {
-        wattron(ctx->history, COLOR_PAIR(RED));
+        uint8_t *errmsg = " * Failed to send action.";
-        wprintw(ctx->history, " * Failed to send action\n");
+        line_info_add(self, NULL, selfname, NULL, errmsg, SYS_MSG, 0, RED);
-        wattroff(ctx->history, COLOR_PAIR(RED));
     } else {
         write_to_log(action, selfname, ctx->log, true);
     }
@@ -498,7 +490,18 @@ static void chat_onKey(ToxWindow *self, Tox *m, wint_t key)
     getmaxyx(self->window, y2, x2);
     int cur_len = 0;
 
-    if (key == 0x107 || key == 0x8 || key == 0x7f) {  /* BACKSPACE key: Remove character behind pos */
+    if (key == T_KEY_ESC) {   /* ESC key: Toggle history scroll mode */
+        bool scroll = ctx->hst->scroll_mode ? false : true;
+        line_info_toggle_scroll(self, scroll);
+    }
+
+    /* If we're in scroll mode ignore rest of function */
+    if (ctx->hst->scroll_mode) {
+        line_info_onKey(self, key);
+        return;
+    }
+
+    if (key == 0x107 || key == 0x8 || key == 0x7f) {  /* BACKSPACE key */
         if (ctx->pos > 0) {
             cur_len = MAX(1, wcwidth(ctx->line[ctx->pos - 1]));
             del_char_buf_bck(ctx->line, &ctx->pos, &ctx->len);
@@ -579,13 +582,13 @@ static void chat_onKey(ToxWindow *self, Tox *m, wint_t key)
 
     else if (key == KEY_UP) {    /* fetches previous item in history */
         fetch_hist_item(ctx->line, &ctx->pos, &ctx->len, ctx->ln_history, ctx->hst_tot,
-                        &ctx->hst_pos, LN_HIST_MV_UP);
+                        &ctx->hst_pos, MOVE_UP);
         mv_curs_end(self->window, ctx->len, y2, x2);
     }
 
     else if (key == KEY_DOWN) {    /* fetches next item in history */
         fetch_hist_item(ctx->line, &ctx->pos, &ctx->len, ctx->ln_history, ctx->hst_tot,
-                        &ctx->hst_pos, LN_HIST_MV_DWN);
+                        &ctx->hst_pos, MOVE_DOWN);
         mv_curs_end(self->window, ctx->len, y2, x2);
     }
 
@@ -637,7 +640,6 @@ static void chat_onKey(ToxWindow *self, Tox *m, wint_t key)
 
         wclear(ctx->linewin);
         wmove(self->window, y2 - CURS_Y_OFFSET, 0);
-        wclrtobot(self->window);
 
         if (!string_is_empty(line))
             add_line_to_hist(ctx->line, ctx->len, ctx->ln_history, &ctx->hst_tot, &ctx->hst_pos);
@@ -658,22 +660,14 @@ static void chat_onKey(ToxWindow *self, Tox *m, wint_t key)
             uint8_t selfname[TOX_MAX_NAME_LENGTH];
             tox_get_self_name(m, selfname);
 
-            print_time(ctx->history);
+            uint8_t timefrmt[TIME_STR_SIZE];
-            wattron(ctx->history, COLOR_PAIR(GREEN));
+            get_time_str(timefrmt);
-            wprintw(ctx->history, "%s: ", selfname);
-            wattroff(ctx->history, COLOR_PAIR(GREEN));
 
-            if (line[0] == '>') {
+            line_info_add(self, timefrmt, selfname, NULL, line, OUT_MSG, 0, 0);
-                wattron(ctx->history, COLOR_PAIR(GREEN));
-                wprintw(ctx->history, "%s\n", line);
-                wattroff(ctx->history, COLOR_PAIR(GREEN));
-            } else
-                wprintw(ctx->history, "%s\n", line);
 
             if (!statusbar->is_online || tox_send_message(m, self->num, line, strlen(line) + 1) == 0) {
-                wattron(ctx->history, COLOR_PAIR(RED));
+                uint8_t *errmsg = " * Failed to send message.";
-                wprintw(ctx->history, " * Failed to send message.\n");
+                line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, RED);
-                wattroff(ctx->history, COLOR_PAIR(RED));
             } else {
                 write_to_log(line, selfname, ctx->log, false);
             }
@@ -688,13 +682,13 @@ static void chat_onKey(ToxWindow *self, Tox *m, wint_t key)
 
 static void chat_onDraw(ToxWindow *self, Tox *m)
 {
-    curs_set(1);
     int x2, y2;
     getmaxyx(self->window, y2, x2);
 
     ChatContext *ctx = self->chatwin;
 
     wclear(ctx->linewin);
+    line_info_print(self);
 
     if (ctx->len > 0) {
         uint8_t line[MAX_STR_SIZE];
@@ -796,6 +790,7 @@ static void chat_onDraw(ToxWindow *self, Tox *m)
 
 static void chat_onInit(ToxWindow *self, Tox *m)
 {
+    curs_set(1);
     int x2, y2;
     getmaxyx(self->window, y2, x2);
     self->x = x2;
@@ -817,20 +812,23 @@ static void chat_onInit(ToxWindow *self, Tox *m)
     scrollok(ctx->history, 1);
     ctx->linewin = subwin(self->window, CHATBOX_HEIGHT, x2, y2-CHATBOX_HEIGHT, 0);
 
+    ctx->hst = malloc(sizeof(struct history));
     ctx->log = malloc(sizeof(struct chatlog));
 
-    if (ctx->log == NULL) {
+    if (ctx->log == NULL || ctx->hst == NULL) {
         endwin();
         fprintf(stderr, "malloc() failed. Aborting...\n");
         exit(EXIT_FAILURE);
     }
 
+    memset(ctx->hst, 0, sizeof(struct history));
     memset(ctx->log, 0, sizeof(struct chatlog));
 
+    line_info_init(ctx->hst);
+
     if (friends[self->num].logging_on)
         log_enable(self->name, friends[self->num].pub_key, ctx->log);
 
-    wprintw(ctx->history, "\n\n");
     execute(ctx->history, self, m, "/help", CHAT_COMMAND_MODE);
     execute(ctx->history, self, m, "/log", GLOBAL_COMMAND_MODE);
 
@@ -880,7 +878,10 @@ ToxWindow new_chat(Tox *m, int32_t friendnum)
     ret.name[TOXIC_MAX_NAME_LENGTH] = '\0';
 
     ChatContext *chatwin = calloc(1, sizeof(ChatContext));
+    memset(chatwin, 0, sizeof(ChatContext));
+
     StatusBar *stb = calloc(1, sizeof(StatusBar));
+    memset(stb, 0, sizeof(StatusBar));
 
     if (stb != NULL && chatwin != NULL) {
         ret.chatwin = chatwin;

src/chat_commands.c

@@ -31,6 +31,7 @@
 #include "misc_tools.h"
 #include "friendlist.h"
 #include "execute.h"
+#include "line_info.h"
 
 extern ToxWindow *prompt;
 
@@ -48,80 +49,103 @@ void cmd_chat_help(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*arg
         }
     }
 
-    wattron(window, COLOR_PAIR(CYAN) | A_BOLD);
+    uint8_t *msg = "Chat commands:";
-    wprintw(window, "Chat commands:\n");
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 1, CYAN);
-    wattroff(window, COLOR_PAIR(CYAN) | A_BOLD);
+
+#ifdef _SUPPORT_AUDIO
+    #define NUMLINES 11
+#else
+    #define NUMLINES 7
+#endif
+
+    uint8_t lines[NUMLINES][MAX_STR_SIZE] = {
 
 #ifdef _SUPPORT_AUDIO
 
-    wprintw(window, "    /call                      : Audio call\n");
+    { "    /call                      : Audio call"                           },
-    wprintw(window, "    /cancel                    : Cancel call\n");
+    { "    /cancel                    : Cancel call"                          },
-    wprintw(window, "    /answer                    : Answer incomming call\n");
+    { "    /answer                    : Answer incomming call"                },
-    wprintw(window, "    /hangup                    : Hangup active call\n");
+    { "    /hangup                    : Hangup active call"                   },
 
 #endif /* _SUPPORT_AUDIO */
     
-    wprintw(window, "    /invite <n>                : Invite friend to a group chat\n");
+    { "    /invite <n>                : Invite friend to a group chat"        },
-    wprintw(window, "    /join                      : Join a pending group chat\n");
+    { "    /join                      : Join a pending group chat"            },
-    wprintw(window, "    /log <on> or <off>         : Enable/disable logging\n");
+    { "    /log <on> or <off>         : Enable/disable logging"               },
-    wprintw(window, "    /sendfile <filepath>       : Send a file\n");
+    { "    /sendfile <filepath>       : Send a file"                          },
-    wprintw(window, "    /savefile <n>              : Receive a file\n");
+    { "    /savefile <n>              : Receive a file"                       },
-    wprintw(window, "    /close                     : Close the current chat window\n");
+    { "    /close                     : Close the current chat window"        },
-    wprintw(window, "    /help                      : Print this message again\n");
+    { "    /help                      : Print this message again"             },
-    wprintw(window, "    /help global               : Show a list of global commands\n");
+    //{ "    /help global               : Show a list of global commands"       },
+};
 
-    wattron(window, COLOR_PAIR(CYAN) | A_BOLD);
+    int i;
-    wprintw(window, " * Argument messages must be enclosed in quotation marks.\n\n");
+
-    wattroff(window, COLOR_PAIR(CYAN) | A_BOLD);
+    for (i = 0; i < NUMLINES; ++i)
+        line_info_add(self, NULL, NULL, NULL, lines[i], SYS_MSG, 0, 0);
+
+    msg = " * Use ESC key to toggle history scroll mode";
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 1, CYAN);
 }
 
 void cmd_groupinvite(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
 {
+    uint8_t *errmsg;
+
     if (argc < 1) {
-      wprintw(window, "Invalid syntax.\n");
+        errmsg = "Invalid syntax";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
     int groupnum = atoi(argv[1]);
 
     if (groupnum == 0 && strcmp(argv[1], "0")) {    /* atoi returns 0 value on invalid input */
-        wprintw(window, "Invalid syntax.\n");
+        errmsg = "Invalid syntax.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
     if (tox_invite_friend(m, self->num, groupnum) == -1) {
-        wprintw(window, "Failed to invite friend.\n");
+        errmsg = "Failed to invite friend.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
-    wprintw(window, "Invited friend to group chat %d.\n", groupnum);
+    uint8_t msg[MAX_STR_SIZE];
+    snprintf(msg, sizeof(msg), "Invited friend to Room #%d.", groupnum);
+    line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 }
 
 void cmd_join_group(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
 {
+    uint8_t *errmsg;
+
     if (get_num_active_windows() >= MAX_WINDOWS_NUM) {
-        wattron(window, COLOR_PAIR(RED));
+        errmsg = " * Warning: Too many windows are open.";
-        wprintw(window, " * Warning: Too many windows are open.\n");
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, RED);
-        wattron(window, COLOR_PAIR(RED));
         return;
     }
 
     uint8_t *groupkey = friends[self->num].pending_groupchat;
 
     if (groupkey[0] == '\0') {
-        wprintw(window, "No pending group chat invite.\n");
+        errmsg = "No pending group chat invite.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
     int groupnum = tox_join_groupchat(m, self->num, groupkey);
 
     if (groupnum == -1) {
-        wprintw(window, "Group chat instance failed to initialize.\n");
+        errmsg = "Group chat instance failed to initialize.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
     if (init_groupchat_win(prompt, m, groupnum) == -1) {
-        wprintw(window, "Group chat window failed to initialize.\n");
+        errmsg = "Group chat window failed to initialize.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         tox_del_groupchat(m, groupnum);
         return;
     }
@@ -129,36 +153,43 @@ void cmd_join_group(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*ar
 
 void cmd_savefile(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
 {
+    uint8_t *errmsg;
+
     if (argc != 1) {
-      wprintw(window, "Invalid syntax.\n");
+      errmsg = "Invalid syntax.";
+      line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
       return;
     }
 
     uint8_t filenum = atoi(argv[1]);
 
     if ((filenum == 0 && strcmp(argv[1], "0")) || filenum >= MAX_FILES) {
-        wprintw(window, "No pending file transfers with that number.\n");
+        errmsg = "No pending file transfers with that number.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
     if (!friends[self->num].file_receiver.pending[filenum]) {
-        wprintw(window, "No pending file transfers with that number.\n");
+        errmsg = "No pending file transfers with that number.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
     uint8_t *filename = friends[self->num].file_receiver.filenames[filenum];
 
     if (tox_file_send_control(m, self->num, 1, filenum, TOX_FILECONTROL_ACCEPT, 0, 0) == 0) {
-        wprintw(window, "Accepted file transfer %u. Saving file as: '%s'\n", filenum, filename);
+        uint8_t msg[MAX_STR_SIZE];
+        snprintf(msg, sizeof(msg), "Accepted file transfer %u. Saving file as: '%s'", filenum, filename);
+        line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 
         if ((friends[self->num].file_receiver.files[filenum] = fopen(filename, "a")) == NULL) {
-            wattron(window, COLOR_PAIR(RED));
+            errmsg = "* Error writing to file.";
-            wprintw(window, "* Error writing to file.\n");
+            line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, RED);
-            wattroff(window, COLOR_PAIR(RED));
             tox_file_send_control(m, self->num, 1, filenum, TOX_FILECONTROL_KILL, 0, 0);
         }
     } else {
-        wprintw(window, "File transfer failed.\n");
+        errmsg = "File transfer failed.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
     }
 
     friends[self->num].file_receiver.pending[filenum] = false;
@@ -166,20 +197,25 @@ void cmd_savefile(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv
 
 void cmd_sendfile(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
 {
+    uint8_t *errmsg;
+
     if (max_file_senders_index >= (MAX_FILES-1)) {
-        wprintw(window,"Please wait for some of your outgoing file transfers to complete.\n");
+        errmsg = "Please wait for some of your outgoing file transfers to complete.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
     if (argc < 1) {
-      wprintw(window, "Invalid syntax.\n");
+      errmsg = "Invalid syntax.";
+      line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
       return;
     }
 
     uint8_t *path = argv[1];
 
     if (path[0] != '\"') {
-        wprintw(window, "File path must be enclosed in quotes.\n");
+        errmsg = "File path must be enclosed in quotes.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
@@ -187,14 +223,16 @@ void cmd_sendfile(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv
     int path_len = strlen(path);
 
     if (path_len > MAX_STR_SIZE) {
-        wprintw(window, "File path exceeds character limit.\n");
+        errmsg = "File path exceeds character limit.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
     FILE *file_to_send = fopen(path, "r");
 
     if (file_to_send == NULL) {
-        wprintw(window, "File '%s' not found.\n", path);
+        errmsg = "File not found.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
@@ -207,7 +245,8 @@ void cmd_sendfile(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv
     int filenum = tox_new_file_sender(m, self->num, filesize, filename, strlen(filename) + 1);
 
     if (filenum == -1) {
-        wprintw(window, "Error sending file.\n");
+        errmsg = "Error sending file.";
+        line_info_add(self, NULL, NULL, NULL, errmsg, SYS_MSG, 0, 0);
         return;
     }
 
@@ -225,7 +264,9 @@ void cmd_sendfile(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv
             file_senders[i].piecelen = fread(file_senders[i].nextpiece, 1,
                                              tox_file_data_size(m, self->num), file_to_send);
 
-            wprintw(window, "Sending file: '%s'\n", path);
+            uint8_t msg[MAX_STR_SIZE];
+            snprintf(msg, sizeof(msg), "Sending file: '%s'", path);
+            line_info_add(self, NULL, NULL, NULL, msg, SYS_MSG, 0, 0);
 
             if (i == max_file_senders_index)
                 ++max_file_senders_index;

src/groupchat.c

@@ -427,13 +427,13 @@ static void groupchat_onKey(ToxWindow *self, Tox *m, wint_t key)
 
     else if (key == KEY_UP) {    /* fetches previous item in history */
         fetch_hist_item(ctx->line, &ctx->pos, &ctx->len, ctx->ln_history, ctx->hst_tot,
-                        &ctx->hst_pos, LN_HIST_MV_UP);
+                        &ctx->hst_pos, MOVE_UP);
         mv_curs_end(self->window, ctx->len, y2, x2);
     }
 
     else if (key == KEY_DOWN) {    /* fetches next item in history */
         fetch_hist_item(ctx->line, &ctx->pos, &ctx->len, ctx->ln_history, ctx->hst_tot,
-                        &ctx->hst_pos, LN_HIST_MV_DWN);
+                        &ctx->hst_pos, MOVE_DOWN);
         mv_curs_end(self->window, ctx->len, y2, x2);
     }
 

src/line_info.c

@@ -0,0 +1,321 @@
+/*  line_info.c
+ *
+ *
+ *  Copyright (C) 2014 Toxic All Rights Reserved.
+ *
+ *  This file is part of Toxic.
+ *
+ *  Toxic is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Toxic is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Toxic.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include "toxic_windows.h"
+#include "line_info.h"
+
+void line_info_init(struct history *hst)
+{
+    hst->line_root = malloc(sizeof(struct line_info));
+    memset(hst->line_root, 0, sizeof(struct line_info));
+
+    if (hst->line_root == NULL) {
+        endwin();
+        fprintf(stderr, "malloc() failed. Aborting...\n");
+        exit(EXIT_FAILURE);
+    }
+
+    hst->line_start = hst->line_root;
+    hst->line_end = hst->line_start;
+}
+
+/* resets line_start when scroll mode is disabled */
+static void line_info_reset_start(struct history *hst)
+{
+    struct line_info *line = hst->line_end;
+    uint32_t start_id = hst->start_id;
+
+    while (line) {
+        if (line->id == start_id) {
+            hst->line_start = line;
+            break;
+        }
+
+        line = line->prev;
+    }
+}
+
+void line_info_toggle_scroll(ToxWindow *self, bool scroll)
+{
+    ChatContext *ctx = self->chatwin;
+    struct history *hst = self->chatwin->hst;
+
+    if (scroll) {
+        hst->scroll_mode = true;
+        scrollok(ctx->history, 0);
+        curs_set(0);
+    } else {
+        hst->scroll_mode = false;
+        scrollok(ctx->history, 1);
+        line_info_reset_start(hst);
+        curs_set(1);
+    }
+}
+
+void line_info_cleanup(struct history *hst)
+{
+    struct line_info *tmp1 = hst->line_root;
+
+    while (tmp1) {
+        struct line_info *tmp2 = tmp1->next;
+        free(tmp1);
+        tmp1 = tmp2;
+    }
+}
+
+void line_info_add(ToxWindow *self, uint8_t *tmstmp, uint8_t *name1, uint8_t *name2, uint8_t *msg, 
+                   uint8_t msgtype, uint8_t bold, uint8_t colour)
+{
+    ChatContext *ctx = self->chatwin;
+    struct history *hst = self->chatwin->hst;
+    struct line_info *new_line = malloc(sizeof(struct line_info));
+    memset(new_line, 0, sizeof(struct line_info));
+
+    if (new_line == NULL) {
+        endwin();
+        fprintf(stderr, "malloc() failed. Aborting...\n");
+        exit(EXIT_FAILURE);
+    }
+
+    int len = 1;     /* there will always be a newline */
+
+    /* for type-specific formatting in print function */
+    switch (msgtype) {
+    case OUT_MSG:
+    case IN_MSG:
+        len += 2;
+        break;
+    case ACTION:
+        len += 3;
+        break;
+    }
+
+    if (msg) {
+        memcpy(new_line->msg, msg, MAX_STR_SIZE);
+        len += strlen(msg);
+    } if (tmstmp) {
+        memcpy(new_line->timestamp, tmstmp, TIME_STR_SIZE);
+        len += strlen(tmstmp);
+    } if (name1) {
+        memcpy(new_line->name1, name1, TOXIC_MAX_NAME_LENGTH);
+        len += strlen(name1);
+    } if (name2) {
+        memcpy(new_line->name2, name2, TOXIC_MAX_NAME_LENGTH);
+        len += strlen(name2);
+    }
+
+    new_line->len = len;
+    new_line->msgtype = msgtype;
+    new_line->bold = bold;
+    new_line->colour = colour;
+    new_line->id = hst->line_end->id + 1;
+
+    new_line->prev = hst->line_end;
+    hst->line_end->next = new_line;
+    hst->line_end = new_line;
+
+    /* If chat history exceeds limit move root forward and free old root */
+    if (++(hst->line_items) >= MAX_HISTORY) {
+        --hst->line_items;
+        struct line_info *tmp = hst->line_root->next;
+        tmp->prev = NULL;
+
+        if (hst->line_start->prev == NULL) {  /* if line_start is root move it forward as well */
+            hst->line_start = hst->line_start->next;
+            hst->line_start->prev = NULL;
+        }
+
+        free(hst->line_root);
+        hst->line_root = tmp;
+    }
+
+    int y, y2, x, x2;
+    getmaxyx(self->window, y2, x2);
+    getyx(ctx->history, y, x);
+
+    /* move line_start forward proportionate to the number of new rows */
+    if (y >= y2 - CHATBOX_HEIGHT) {
+        int i;
+        int lines = 1 + (len / x2);
+
+        while (lines > 0 && hst->line_start->next) {
+            lines -= (1 + hst->line_start->len / x2);
+            hst->line_start = hst->line_start->next;
+            ++hst->start_id;
+        }
+    }
+}
+
+void line_info_print(ToxWindow *self)
+{
+    ChatContext *ctx = self->chatwin;
+    wclear(ctx->history);
+    wmove(ctx->history, 1, 0);
+    int y2, x2;
+    getmaxyx(self->window, y2, x2);
+
+    struct line_info *line = ctx->hst->line_start;
+    int numlines = 0;
+
+    while(line && numlines <= x2) {
+        uint8_t type = line->msgtype;
+        numlines += line->len / x2;
+
+        switch (type) {
+        case OUT_MSG:
+        case IN_MSG:
+            wattron(ctx->history, COLOR_PAIR(BLUE));
+            wprintw(ctx->history, "%s", line->timestamp);
+            wattroff(ctx->history, COLOR_PAIR(BLUE));
+
+            int nameclr = GREEN;
+
+            if (type == IN_MSG)
+                nameclr = CYAN;
+            if (line->colour)
+                nameclr = line->colour;
+
+            wattron(ctx->history, COLOR_PAIR(nameclr));
+            wprintw(ctx->history, "%s: ", line->name1);
+            wattroff(ctx->history, COLOR_PAIR(nameclr));
+
+            if (line->msg[0] == '>')
+                wattron(ctx->history, COLOR_PAIR(GREEN));
+
+            wprintw(ctx->history, "%s\n", line->msg);
+
+            if (line->msg[0] == '>')
+                wattroff(ctx->history, COLOR_PAIR(GREEN));
+
+            break;
+
+        case ACTION:
+            wattron(ctx->history, COLOR_PAIR(BLUE));
+            wprintw(ctx->history, "%s", line->timestamp);
+            wattroff(ctx->history, COLOR_PAIR(BLUE));
+
+            wattron(ctx->history, COLOR_PAIR(YELLOW));
+            wprintw(ctx->history, "* %s %s\n", line->name1, line->msg);
+            wattroff(ctx->history, COLOR_PAIR(YELLOW));
+
+            break;
+
+        case SYS_MSG:
+            if (line->timestamp[0]) {
+                wattron(ctx->history, COLOR_PAIR(BLUE));
+                wprintw(ctx->history, "%s", line->timestamp);
+                wattroff(ctx->history, COLOR_PAIR(BLUE));
+            }
+
+            if (line->bold)
+                wattron(ctx->history, A_BOLD);
+            if (line->colour)
+                wattron(ctx->history, COLOR_PAIR(line->colour));
+
+            wprintw(ctx->history, "%s\n", line->msg);
+
+            if (line->bold)
+                wattroff(ctx->history, A_BOLD);
+            if (line->colour)
+                wattroff(ctx->history, COLOR_PAIR(line->colour));
+
+            break;
+        }
+
+        line = line->next;
+    }
+}
+
+static void line_info_goto_root(struct history *hst)
+{
+    hst->line_start = hst->line_root;
+}
+
+static void line_info_scroll_up(struct history *hst)
+{
+    if (hst->line_start->prev)
+        hst->line_start = hst->line_start->prev;
+    else beep();
+}
+
+static void line_info_scroll_down(struct history *hst)
+{
+    if (hst->line_start->next)
+        hst->line_start = hst->line_start->next;
+    else beep();
+}
+
+static void line_info_page_up(ToxWindow *self, struct history *hst)
+{
+    int x2, y2;
+    getmaxyx(self->window, y2, x2);
+    int jump_dist = y2 / 2;
+    int i;
+
+    for (i = 0; i < jump_dist && hst->line_start->prev; ++i)
+        hst->line_start = hst->line_start->prev;
+}
+
+static void line_info_page_down(ToxWindow *self, struct history *hst)
+{
+    int x2, y2;
+    getmaxyx(self->window, y2, x2);
+    int jump_dist = y2 / 2;
+    int i;
+
+    for (i = 0; i < jump_dist && hst->line_start->next; ++i)
+        hst->line_start = hst->line_start->next;
+}
+
+void line_info_onKey(ToxWindow *self, wint_t key)
+{
+    struct history *hst = self->chatwin->hst;
+
+    switch (key) {
+    case KEY_PPAGE:
+        line_info_page_up(self, hst);
+        break;
+    case KEY_NPAGE:
+        line_info_page_down(self, hst);
+        break;
+    case KEY_UP:
+        line_info_scroll_up(hst);
+        break;
+    case KEY_DOWN:
+        line_info_scroll_down(hst);
+        break;
+    case KEY_HOME:
+        line_info_goto_root(hst);
+        break;
+    case KEY_END:
+        line_info_reset_start(hst);
+        break;
+    }
+}

src/line_info.h

@@ -0,0 +1,64 @@
+/*  line_info.h
+ *
+ *
+ *  Copyright (C) 2014 Toxic All Rights Reserved.
+ *
+ *  This file is part of Toxic.
+ *
+ *  Toxic is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Toxic is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with Toxic.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#define MAX_HISTORY 50
+
+enum {
+    SYS_MSG,
+    IN_MSG,
+    OUT_MSG,
+    ACTION,
+    CONNECTION,
+} LINE_TYPE;
+
+struct line_info {
+    uint8_t timestamp[TIME_STR_SIZE];
+    uint8_t name1[TOXIC_MAX_NAME_LENGTH];
+    uint8_t name2[TOXIC_MAX_NAME_LENGTH];
+    uint8_t msg[MAX_STR_SIZE];
+    uint8_t msgtype;
+    uint8_t bold;
+    uint8_t colour;
+    uint32_t id;
+    int len;   /* combined len of all strings */
+
+    struct line_info *prev;
+    struct line_info *next;
+};
+
+/* Linked list containing chat history lines */
+struct history {
+    struct line_info *line_root;
+    struct line_info *line_start;   /* the first line we want to start printing at */
+    struct line_info *line_end;
+    uint32_t start_id;    /* keeps track of where line_start should be when at bottom of history */
+    uint32_t line_items;
+    bool scroll_mode;
+};
+
+void line_info_add(ToxWindow *self, uint8_t *tmstmp, uint8_t *name1, uint8_t *name2, uint8_t *msg, 
+                   uint8_t msgtype, uint8_t bold, uint8_t colour);
+void line_info_cleanup(struct history *hst);
+void line_info_toggle_scroll(ToxWindow *self, bool scroll);
+void line_info_init(struct history *hst);
+void line_info_print(ToxWindow *self);
+void line_info_onKey(ToxWindow *self, wint_t key);

src/log.c

@@ -51,9 +51,7 @@ void init_logging_session(uint8_t *name, uint8_t *key, struct chatlog *log)
         sprintf(&ident[2], "%02X", key[1] & 0xff);
         ident[KEY_IDENT_DIGITS*2+1] = '\0';
     } else {
-        uint8_t s[MAX_STR_SIZE];
+        strftime(ident, sizeof(ident), "%Y-%m-%d[%H:%M:%S]", get_time());
-        strftime(s, MAX_STR_SIZE, "%Y-%m-%d[%H:%M:%S]", get_time());
-        snprintf(ident, sizeof(ident), "%s", s);
         path_len += strlen(ident) + 1;
     }
 

src/misc_tools.c

@@ -30,6 +30,7 @@
 #include <limits.h>
 
 #include "toxic_windows.h"
+#include "misc_tools.h"
 
 extern ToxWindow *prompt;
 
@@ -65,6 +66,11 @@ void print_time(WINDOW *window)
     wattroff(window,COLOR_PAIR(BLUE));
 }
 
+void get_time_str(uint8_t *buf)
+{
+    strftime(buf, TIME_STR_SIZE, "[%H:%M:%S] ", get_time());
+}
+
 /* XXX: FIX */
 unsigned char *hex_string_to_bin(char hex_string[])
 {

src/misc_tools.h

@@ -67,7 +67,7 @@ int qsort_strcasecmp_hlpr(const void *nick1, const void *nick2);
       - cannot be empty
       - cannot start with a space
       - must not contain contiguous spaces */
-bool valid_nick(uint8_t *nick);
+int valid_nick(uint8_t *nick);
 
 /* Moves the cursor to the end of the line in given window */
 void mv_curs_end(WINDOW *w, size_t len, int max_y, int max_x);

src/prompt.c

@@ -208,7 +208,7 @@ static void prompt_onKey(ToxWindow *self, Tox *m, wint_t key)
     else if (key == KEY_UP) {     /* fetches previous item in history */
         wmove(self->window, prt->orig_y, X_OFST);
         fetch_hist_item(prt->line, &prt->pos, &prt->len, prt->ln_history, prt->hst_tot,
-                        &prt->hst_pos, LN_HIST_MV_UP);
+                        &prt->hst_pos, MOVE_UP);
 
         /* adjust line y origin appropriately when window scrolls down */
         if (prt->at_bottom && prt->len >= x2 - X_OFST) {
@@ -230,7 +230,7 @@ static void prompt_onKey(ToxWindow *self, Tox *m, wint_t key)
     else if (key == KEY_DOWN) {    /* fetches next item in history */
         wmove(self->window, prt->orig_y, X_OFST);
         fetch_hist_item(prt->line, &prt->pos, &prt->len, prt->ln_history, prt->hst_tot,
-                        &prt->hst_pos, LN_HIST_MV_DWN);
+                        &prt->hst_pos, MOVE_DOWN);
     }
 
     else if (key == '\t') {    /* TAB key: completes command */

src/toxic_strings.c

@@ -148,7 +148,7 @@ void add_line_to_hist(const wchar_t *buf, size_t len, wchar_t (*hst)[MAX_STR_SIZ
 void fetch_hist_item(wchar_t *buf, size_t *pos, size_t *len, wchar_t (*hst)[MAX_STR_SIZE],
                      int hst_tot, int *hst_pos, int key_dir)
 {
-    if (key_dir == LN_HIST_MV_UP) {
+    if (key_dir == MOVE_UP) {
         if (--(*hst_pos) < 0) {
             *hst_pos = 0;
             beep();

src/toxic_strings.h

@@ -48,11 +48,6 @@ void reset_buf(wchar_t *buf, size_t *pos, size_t *len);
    Returns the difference between the old len and new len of buf on success, -1 if error */
 int complete_line(wchar_t *buf, size_t *pos, size_t *len, const void *list, int n_items, int size);
 
-enum {
-    LN_HIST_MV_UP,
-    LN_HIST_MV_DWN,
-};
-
 /* adds a line to the ln_history buffer at hst_pos and sets hst_pos to last history item. */
 void add_line_to_hist(const wchar_t *buf, size_t len, wchar_t (*hst)[MAX_STR_SIZE], int *hst_tot, 
                       int *hst_pos);

src/toxic_windows.h

@@ -49,6 +49,7 @@
 #define CURS_Y_OFFSET 3    /* y-axis cursor offset for chat contexts */
 #define CHATBOX_HEIGHT 4
 #define KEY_IDENT_DIGITS 2    /* number of hex digits to display for the pub-key based identifier */
+#define TIME_STR_SIZE 16
 
 #define EXIT_SUCCESS 0
 #define EXIT_FAILURE 1
@@ -60,6 +61,7 @@
 #define T_KEY_PREV       0x0F     /* ctrl-o */
 #define T_KEY_C_E        0x05     /* ctrl-e */
 #define T_KEY_C_A        0x01     /* ctrl-a */
+#define T_KEY_ESC        0x1B     /* ESC key */
 
 /* Curses foreground colours (background is black) */
 enum {
@@ -80,6 +82,11 @@ enum {
     WINDOW_ALERT_2,
 };
 
+enum {
+    MOVE_UP,
+    MOVE_DOWN,
+};
+
 /* Fixes text color problem on some terminals. 
    Uncomment if necessary */
 /* #define URXVT_FIX */
@@ -176,13 +183,13 @@ struct ChatContext {
     size_t pos;
     size_t len;
 
-    wchar_t ln_history[MAX_LINE_HIST][MAX_STR_SIZE];
+    wchar_t ln_history[MAX_LINE_HIST][MAX_STR_SIZE];  /* history for input lines/commands */
     int hst_pos;
     int hst_tot;
 
-    uint8_t self_is_typing;
+    struct history *hst;
-
     struct chatlog *log;
+    uint8_t self_is_typing;
 
     WINDOW *history;
     WINDOW *linewin;
@@ -203,7 +210,9 @@ struct PromptBuf {
     int hst_pos;
     int hst_tot;
 
+    struct history *hst;
     struct chatlog *log;
+
     WINDOW *linewin;
 };