Patch #5374 - Updated text editor plugin from Jonathan Gordon.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9963 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/text_editor.c

@@ -50,121 +50,156 @@
 #define TEXT_EDITOR_CANCEL BUTTON_POWER
 #define TEXT_EDITOR_ITEM_MENU BUTTON_PLAY
 
-#elif CONFIG_KEYPAD == GIGABEAT_PAD
-
 #else
     #error TEXT_EDITOR: Unsupported keypad
 #endif
 
-#define MAX_LINE_LEN 128
 
 #if PLUGIN_BUFFER_SIZE > 0x45000
-#define MAX_LINES    2048
+#define MAX_CHARS    0x40000 /* 128 kiB */
 #else
-#define MAX_LINES   128
+#define MAX_CHARS   0x6000 /* 24 kiB */
 #endif
-
+#define MAX_LINE_LEN 2048
 PLUGIN_HEADER
 static struct plugin_api* rb;
 
-struct LineStruct {
+static char buffer[MAX_CHARS];
-    char line[MAX_LINE_LEN];
+static char eol[3];
-    int prev; /* index to prev item, or -1 */
+static int char_count = 0;
-    int next; /* index to next item, or -1 */
+static int line_count = 0;
-};
+static int last_action_line = 0;
+static int last_char_index = 0;
 
-struct LineStruct lines[MAX_LINES];
+#define ACTION_INSERT 0
-int line_count = 0;
+#define ACTION_GET    1
-int first = -1, last = -1;
+#define ACTION_REMOVE 2
-int indicies[MAX_LINES];
+#define ACTION_UPDATE 3
-/**************************** stuff for the linked lists  ***************/
+#define ACTION_CONCAT 4
-int build_indicies(void)
+
+int _do_action(int action, char* str, int line);
+#ifndef HAVE_ADJUSTABLE_CPU_FREQ
+#define do_action _do_action
+#else
+int do_action(int action, char* str, int line)
 {
-    int i=0, index = first;
+    int r;
-    struct LineStruct *line;
+    rb->cpu_boost(1);
-    if (first==-1)
+    r = _do_action(action,str,line);
+    rb->cpu_boost(0);
+    return r;
+}
+#endif
+
+int _do_action(int action, char* str, int line)
+{
+    int len;
+    int i=0,c=0;
+    if (line>=last_action_line)
+    {
+        i = last_action_line;
+        c = last_char_index;
+    }
+    while (i<line && i<line_count)
+    {
+        c += rb->strlen(&buffer[c])+1;
+        i++;
+    }
+    switch (action)
+    {
+        case ACTION_INSERT:
+            len = rb->strlen(str)+1;
+            if ( char_count+ len > MAX_CHARS )
                 return 0;
-    while (i<line_count)
+            rb->memmove(&buffer[c+len],&buffer[c],char_count);
-    {
+            rb->strcpy(&buffer[c],str);
-        indicies[i++] = index;
+            char_count += len;
-        DEBUGF("%d,",index);
-        line = &lines[index];
-        index = line->next;
-
-    }
-    DEBUGF("\n");
-    return 1;
-}
-
-int find_first_free(int start)
-{
-    int i;
-    if ((start <0) || (start >=MAX_LINES))
-        start = 0;
-    i = start;
-    do
-    {
-        if (lines[i].line[0] == '\0')
-            return i;
-        i = (i+1)%MAX_LINES;
-    } while (i!=start);
-    return -1;
-}
-
-int add_line(char *line, int idx_after_me)
-{
-    struct LineStruct *temp;
-    int next;
-    int this_idx = find_first_free(idx_after_me);
-    if ((line_count >= MAX_LINES) || (this_idx == -1))
-        return -1;
-    DEBUGF("line:%s ,idx_after_me=%d\n",line,idx_after_me);
-    if (idx_after_me == -1) /* add as the first item */
-    {
-        rb->strcpy(lines[this_idx].line,line);
-        lines[this_idx].prev = -1;
-        if (first != -1)
-            lines[first].prev = this_idx;
-        lines[this_idx].next = first;
-        first = this_idx;
-        if (last == idx_after_me)
-            last = this_idx;
             line_count++;
-        return 1;
+            break;
+        case ACTION_GET:
+            if (line > line_count)
+                return 0;
+            last_action_line = i;
+            last_char_index = c;
+            return c;
+            break;
+        case ACTION_REMOVE:
+            if (line > line_count)
+                return 0;
+            len = rb->strlen(&buffer[c])+1;
+            rb->memmove(&buffer[c],&buffer[c+len],char_count);
+            char_count -= len;
+            line_count--;
+            break;
+        case ACTION_UPDATE:
+            if (line > line_count)
+                return 0;
+            len = rb->strlen(&buffer[c])+1;
+            rb->memmove(&buffer[c+rb->strlen(str)+1],&buffer[c+len],char_count);
+            rb->strcpy(&buffer[c],str);
+            char_count += rb->strlen(str)+1-len;
+            break;
+        case ACTION_CONCAT:
+            if (line > line_count)
+                return 0;
+            rb->memmove(&buffer[c-1],&buffer[c],char_count);
+            break;
+        default:
+            return 0;
     }
-
+    last_action_line = i;
-    temp = &lines[idx_after_me];
+    last_char_index = c;
-    next = lines[idx_after_me].next;
+    return 1;
-    temp->next = this_idx;
-    rb->strcpy(lines[this_idx].line,line);
-    temp = &lines[this_idx];
-    temp->next = next;
-    temp->prev = idx_after_me;
-    if (last == idx_after_me)
-        last = this_idx;
-    if (first == -1)
-        first = this_idx;
-    line_count ++;
-    return this_idx;
-}
-
-void del_line(int line)
-{
-    int idx_prev, idx_next;
-    idx_prev = (&lines[line])->prev;
-    idx_next = (&lines[line])->next;
-    lines[line].line[0] = '\0';
-    lines[idx_prev].next = idx_next;
-    lines[idx_next].prev = idx_prev;
-    line_count --;
 }
 char *list_get_name_cb(int selected_item,void* data,char* buf)
 {
+    char *b = &buffer[do_action(ACTION_GET,0,selected_item)];
     (void)data;
-    rb->strcpy(buf,lines[indicies[selected_item]].line);
+    if (rb->strlen(b) >= MAX_PATH)
+    {
+        char t = b[MAX_PATH-10];
+        b[MAX_PATH-10] = '\0';
+        rb->snprintf(buf,MAX_PATH,"%s ...\0",b);
+        b[MAX_PATH-10] = t;
+    }
+    else rb->strcpy(buf,b);
     return buf;
 }
-char filename[1024];
+char filename[MAX_PATH];
+int get_eol_string(char* fn)
+{
+    int fd=-1;
+    char t;
+    if (!fn)
+        return 0;
+    else if  (!fn[0])
+        return 0;
+    fd = rb->PREFIX(open(fn,O_RDONLY));
+    if (fd<0)
+        return 0;
+    eol[0] = '\0';
+    while (!eol[0])
+    {
+        if (!rb->read(fd,&t,1))
+        {
+            rb->strcpy(eol,"\n");
+            return 0;
+        }
+        if (t == '\r')
+        {
+            if (rb->read(fd,&t,1) && t=='\n')
+                rb->strcpy(eol,"\r\n");
+            else rb->strcpy(eol,"\r");
+        }
+        else if (t == '\n')
+        {
+            rb->strcpy(eol,"\n");
+        }
+    }
+    rb->close(fd);
+    return 1;
+}
+
 void save_changes(int overwrite)
 {
     int fd;
@@ -173,34 +208,37 @@ void save_changes(int overwrite)
     if (!filename[0] || !overwrite)
     {
         rb->strcpy(filename,"/");
-        rb->kbd_input(filename,1024);
+        rb->kbd_input(filename,MAX_PATH);
     }
 
     fd = rb->open(filename,O_WRONLY|O_CREAT);
-    if (!fd)
+    if (fd < 0)
     {
         rb->splash(HZ*2,1,"Changes NOT saved");
         return;
     }
 
     rb->lcd_clear_display();
-    build_indicies();
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    rb->cpu_boost(1);
+#endif
     for (i=0;i<line_count;i++)
     {
-        rb->fdprintf(fd,"%s\n",lines[indicies[i]].line);
+        rb->fdprintf(fd,"%s%s",&buffer[do_action(ACTION_GET,0,i)],eol);
     }
-
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    rb->cpu_boost(0);
+#endif
     rb->close(fd);
 }
 
-void setup_lists(struct gui_synclist *lists)
+void setup_lists(struct gui_synclist *lists, int sel)
 {
-    build_indicies();
     rb->gui_synclist_init(lists,list_get_name_cb,0);
     rb->gui_synclist_set_icon_callback(lists,NULL);
     rb->gui_synclist_set_nb_items(lists,line_count);
     rb->gui_synclist_limit_scroll(lists,true);
-    rb->gui_synclist_select_item(lists, 0);
+    rb->gui_synclist_select_item(lists, sel);
     rb->gui_synclist_draw(lists);
 }
 enum {
@@ -219,7 +257,6 @@ int do_item_menu(int cur_sel, char* copy_buffer)
             { "Insert Below", NULL },
             { "", NULL },
             { "Cat To Above",NULL },
-            /*       { "Split Line",NULL }, */
             { "", NULL },
             { "Save", NULL },
     };
@@ -229,12 +266,12 @@ int do_item_menu(int cur_sel, char* copy_buffer)
     switch (rb->menu_show(m))
     {
         case 0: /* cut */
-            rb->strcpy(copy_buffer,lines[indicies[cur_sel]].line);
+            rb->strcpy(copy_buffer,&buffer[do_action(ACTION_GET,0,cur_sel)]);
-            del_line(indicies[cur_sel]);
+            do_action(ACTION_REMOVE,0,cur_sel);
             ret = MENU_RET_UPDATE;
         break;
         case 1: /* copy */
-            rb->strcpy(copy_buffer,lines[indicies[cur_sel]].line);
+            rb->strcpy(copy_buffer,&buffer[do_action(ACTION_GET,0,cur_sel)]);
             ret = MENU_RET_NO_UPDATE;
         break;
         case 2: /* blank */
@@ -244,7 +281,7 @@ int do_item_menu(int cur_sel, char* copy_buffer)
         case 3: /* insert above */
             if (!rb->kbd_input(copy_buffer,MAX_LINE_LEN))
             {
-                add_line(copy_buffer,lines[indicies[cur_sel]].prev);
+                do_action(ACTION_INSERT,copy_buffer,cur_sel);
                 copy_buffer[0]='\0';
                 ret = MENU_RET_UPDATE;
             }
@@ -252,7 +289,7 @@ int do_item_menu(int cur_sel, char* copy_buffer)
         case 4: /* insert below */
             if (!rb->kbd_input(copy_buffer,MAX_LINE_LEN))
             {
-                add_line(copy_buffer,indicies[cur_sel]);
+                do_action(ACTION_INSERT,copy_buffer,cur_sel+1);
                 copy_buffer[0]='\0';
                 ret = MENU_RET_UPDATE;
             }
@@ -263,13 +300,10 @@ int do_item_menu(int cur_sel, char* copy_buffer)
         case 6: /* cat to above */
             if (cur_sel>0)
             {
-                rb->strcat(lines[indicies[cur_sel-1]].line,lines[indicies[cur_sel]].line);
+                do_action(ACTION_CONCAT,0,cur_sel);
-                del_line(indicies[cur_sel]);
                 ret = MENU_RET_UPDATE;
             }
         break;
-        /*   case 7: // split line */
-
         case 7: /* save */
             ret = MENU_RET_SAVE;
         break;
@@ -284,19 +318,32 @@ int do_item_menu(int cur_sel, char* copy_buffer)
 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 {
     int fd;
-    char temp_line[MAX_LINE_LEN];
+    static char temp_line[MAX_LINE_LEN];
 
     struct gui_synclist lists;
     bool exit = false;
     int button, last_button = BUTTON_NONE;
     bool changed = false;
-    int cur_sel;
+    int cur_sel=0;
-    char copy_buffer[MAX_LINE_LEN]; copy_buffer[0]='\0';
+    static char copy_buffer[MAX_LINE_LEN];
+    bool prev_show_statusbar;
 
     rb = api;
+
+    copy_buffer[0]='\0';
+    prev_show_statusbar = rb->global_settings->statusbar;
+    rb->global_settings->statusbar = false;
+
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    rb->cpu_boost(1);
+#endif
     if (parameter)
     {
         rb->strcpy(filename,(char*)parameter);
+        if (!get_eol_string(filename))
+        {
+            rb->strcpy(eol,"\n");
+        }
         fd = rb->open(filename,O_RDONLY);
         if (fd<0)
         {
@@ -306,7 +353,7 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
         /* read in the file */
         while (rb->read_line(fd,temp_line,MAX_LINE_LEN))
         {
-            if (add_line(temp_line,last) < 0)
+            if (!do_action(ACTION_INSERT,temp_line,line_count))
             {
                 rb->splash(HZ*2,true,"Error reading file: %s",(char*)parameter);
                 rb->close(fd);
@@ -315,16 +362,30 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
         }
         rb->close(fd);
     }
-    else filename[0] = '\0';
+    else
+    {
+        filename[0] = '\0';
+        rb->strcpy(eol,"\n");
+    }
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+    rb->cpu_boost(0);
+#endif
     /* now dump it in the list */
-    setup_lists(&lists);
+    setup_lists(&lists,0);
+    rb->lcd_update();
     while (!exit)
     {
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+        rb->cpu_boost(1);
+#endif
         rb->gui_synclist_draw(&lists);
         cur_sel = rb->gui_synclist_get_sel_pos(&lists);
         button = rb->button_get(true);
         if (rb->gui_synclist_do_button(&lists,button))
             continue;
+#ifdef HAVE_ADJUSTABLE_CPU_FREQ
+        rb->cpu_boost(0);
+#endif
         switch (button)
         {
             case TEXT_EDITOR_SELECT:
@@ -333,15 +394,15 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
                 if (last_button != TEXT_EDITOR_SELECT_PRE)
                     break;
 #endif
-                char buf[MAX_LINE_LEN];buf[0]='\0';
-
                 if (line_count)
-                    rb->strcpy(buf,lines[indicies[cur_sel]].line);
+                    rb->strcpy(temp_line,&buffer[do_action(ACTION_GET,0,cur_sel)]);
-                if (!rb->kbd_input(buf,MAX_LINE_LEN))
+                if (!rb->kbd_input(temp_line,MAX_LINE_LEN))
                 {
                     if (line_count)
-                        rb->strcpy(lines[indicies[cur_sel]].line,buf);
+                    {
-                    else { add_line(buf, first); setup_lists(&lists); }
+                        do_action(ACTION_UPDATE,temp_line,cur_sel);
+                    }
+                    else do_action(ACTION_INSERT,temp_line,cur_sel);
                     changed = true;
                 }
             }
@@ -353,10 +414,9 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
                     break;
 #endif
                 if (!line_count) break;
-                rb->strcpy(copy_buffer,lines[indicies[cur_sel]].line);
+                rb->strcpy(copy_buffer,&buffer[do_action(ACTION_GET,0,cur_sel)]);
-                del_line(indicies[cur_sel]);
+                do_action(ACTION_REMOVE,0,cur_sel);
                 changed = true;
-                setup_lists(&lists);
             break;
 #endif
 #ifdef TEXT_EDITOR_ITEM_MENU
@@ -381,7 +441,6 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
                     break;
                     case MENU_RET_UPDATE:
                         changed = true;
-                        setup_lists(&lists);
                     break;
                     case MENU_RET_NO_UPDATE:
                     break;
@@ -441,7 +500,8 @@ enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
             break;
         }
         last_button = button;
+        rb->gui_synclist_set_nb_items(&lists,line_count);
     }
-
+    rb->global_settings->statusbar = prev_show_statusbar;
     return PLUGIN_OK;
 }