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rockbox/apps/plugins/text_editor.c
Dave Chapman 4c3ada4428 Patch #5374 - Updated text editor plugin from Jonathan Gordon. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9963 a1c6a512-1295-4272-9138-f99709370657
2006-05-20 10:16:03 +00:00

507 lines
14 KiB
C
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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Jonathan Gordon
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
/* button definitions, every keypad must only have select,menu and cancel */
#if CONFIG_KEYPAD == RECORDER_PAD
#define TEXT_EDITOR_SELECT BUTTON_PLAY
#define TEXT_EDITOR_CANCEL BUTTON_OFF
#define TEXT_EDITOR_ITEM_MENU BUTTON_F1
#elif CONFIG_KEYPAD == ONDIO_PAD
#define TEXT_EDITOR_SELECT_PRE BUTTON_MENU
#define TEXT_EDITOR_SELECT (BUTTON_MENU|BUTTON_REL)
#define TEXT_EDITOR_CANCEL BUTTON_OFF
#define TEXT_EDITOR_ITEM_MENU BUTTON_MENU|BUTTON_REPEAT
#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
#define TEXT_EDITOR_SELECT BUTTON_SELECT
#define TEXT_EDITOR_CANCEL BUTTON_OFF
#define TEXT_EDITOR_DELETE BUTTON_REC
#define TEXT_EDITOR_ITEM_MENU BUTTON_MODE
#elif (CONFIG_KEYPAD == IPOD_3G_PAD) || (CONFIG_KEYPAD == IPOD_4G_PAD)
#define TEXT_EDITOR_SELECT_PRE BUTTON_SELECT
#define TEXT_EDITOR_SELECT ( BUTTON_SELECT | BUTTON_REL)
#define TEXT_EDITOR_CANCEL_PRE BUTTON_SELECT
#define TEXT_EDITOR_CANCEL (BUTTON_SELECT | BUTTON_MENU)
#define TEXT_EDITOR_DELETE (BUTTON_LEFT)
#define TEXT_EDITOR_ITEM_MENU (BUTTON_MENU)
#elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
#elif CONFIG_KEYPAD == IAUDIO_X5_PAD
#define TEXT_EDITOR_SELECT BUTTON_SELECT
#define TEXT_EDITOR_CANCEL BUTTON_POWER
#define TEXT_EDITOR_ITEM_MENU BUTTON_PLAY
#else
#error TEXT_EDITOR: Unsupported keypad
#endif
#if PLUGIN_BUFFER_SIZE > 0x45000
#define MAX_CHARS 0x40000 /* 128 kiB */
#else
#define MAX_CHARS 0x6000 /* 24 kiB */
#endif
#define MAX_LINE_LEN 2048
PLUGIN_HEADER
static struct plugin_api* rb;
static char buffer[MAX_CHARS];
static char eol[3];
static int char_count = 0;
static int line_count = 0;
static int last_action_line = 0;
static int last_char_index = 0;
#define ACTION_INSERT 0
#define ACTION_GET 1
#define ACTION_REMOVE 2
#define ACTION_UPDATE 3
#define ACTION_CONCAT 4
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 r;
rb->cpu_boost(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;
rb->memmove(&buffer[c+len],&buffer[c],char_count);
rb->strcpy(&buffer[c],str);
char_count += len;
line_count++;
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;
last_char_index = c;
return 1;
}
char *list_get_name_cb(int selected_item,void* data,char* buf)
{
char *b = &buffer[do_action(ACTION_GET,0,selected_item)];
(void)data;
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[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;
int i;
if (!filename[0] || !overwrite)
{
rb->strcpy(filename,"/");
rb->kbd_input(filename,MAX_PATH);
}
fd = rb->open(filename,O_WRONLY|O_CREAT);
if (fd < 0)
{
rb->splash(HZ*2,1,"Changes NOT saved");
return;
}
rb->lcd_clear_display();
#ifdef HAVE_ADJUSTABLE_CPU_FREQ
rb->cpu_boost(1);
#endif
for (i=0;i<line_count;i++)
{
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, int sel)
{
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, sel);
rb->gui_synclist_draw(lists);
}
enum {
MENU_RET_SAVE = -1,
MENU_RET_NO_UPDATE,
MENU_RET_UPDATE,
};
int do_item_menu(int cur_sel, char* copy_buffer)
{
int m, ret = 0;
static const struct menu_item items[] = {
{ "Cut", NULL },
{ "Copy", NULL },
{ "", NULL },
{ "Insert Above", NULL },
{ "Insert Below", NULL },
{ "", NULL },
{ "Cat To Above",NULL },
{ "", NULL },
{ "Save", NULL },
};
m = rb->menu_init(items, sizeof(items) / sizeof(*items),
NULL, NULL, NULL, NULL);
switch (rb->menu_show(m))
{
case 0: /* cut */
rb->strcpy(copy_buffer,&buffer[do_action(ACTION_GET,0,cur_sel)]);
do_action(ACTION_REMOVE,0,cur_sel);
ret = MENU_RET_UPDATE;
break;
case 1: /* copy */
rb->strcpy(copy_buffer,&buffer[do_action(ACTION_GET,0,cur_sel)]);
ret = MENU_RET_NO_UPDATE;
break;
case 2: /* blank */
ret = MENU_RET_NO_UPDATE;
break;
case 3: /* insert above */
if (!rb->kbd_input(copy_buffer,MAX_LINE_LEN))
{
do_action(ACTION_INSERT,copy_buffer,cur_sel);
copy_buffer[0]='\0';
ret = MENU_RET_UPDATE;
}
break;
case 4: /* insert below */
if (!rb->kbd_input(copy_buffer,MAX_LINE_LEN))
{
do_action(ACTION_INSERT,copy_buffer,cur_sel+1);
copy_buffer[0]='\0';
ret = MENU_RET_UPDATE;
}
break;
case 5: /* blank */
ret = MENU_RET_NO_UPDATE;
break;
case 6: /* cat to above */
if (cur_sel>0)
{
do_action(ACTION_CONCAT,0,cur_sel);
ret = MENU_RET_UPDATE;
}
break;
case 7: /* save */
ret = MENU_RET_SAVE;
break;
default:
ret = MENU_RET_NO_UPDATE;
break;
}
rb->menu_exit(m);
return ret;
}
/* this is the plugin entry point */
enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
int fd;
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=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)
{
rb->splash(HZ*2,true,"Couldnt open file: %s",(char*)parameter);
return PLUGIN_ERROR;
}
/* read in the file */
while (rb->read_line(fd,temp_line,MAX_LINE_LEN))
{
if (!do_action(ACTION_INSERT,temp_line,line_count))
{
rb->splash(HZ*2,true,"Error reading file: %s",(char*)parameter);
rb->close(fd);
return PLUGIN_ERROR;
}
}
rb->close(fd);
}
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,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:
{
#ifdef TEXT_EDITOR_SELECT_PRE
if (last_button != TEXT_EDITOR_SELECT_PRE)
break;
#endif
if (line_count)
rb->strcpy(temp_line,&buffer[do_action(ACTION_GET,0,cur_sel)]);
if (!rb->kbd_input(temp_line,MAX_LINE_LEN))
{
if (line_count)
{
do_action(ACTION_UPDATE,temp_line,cur_sel);
}
else do_action(ACTION_INSERT,temp_line,cur_sel);
changed = true;
}
}
break;
#ifdef TEXT_EDITOR_DELETE
case TEXT_EDITOR_DELETE:
#ifdef TEXT_EDITOR_DELETE_PRE
if (last_button != TEXT_EDITOR_DELETE_PRE)
break;
#endif
if (!line_count) break;
rb->strcpy(copy_buffer,&buffer[do_action(ACTION_GET,0,cur_sel)]);
do_action(ACTION_REMOVE,0,cur_sel);
changed = true;
break;
#endif
#ifdef TEXT_EDITOR_ITEM_MENU
case TEXT_EDITOR_ITEM_MENU:
#ifdef TEXT_EDITOR_RC_ITEM_MENU
case TEXT_EDITOR_RC_ITEM_MENU:
#endif
#ifdef TEXT_EDITOR_ITEM_MENU_PRE
if (lastbutton != TEXT_EDITOR_ITEM_MENU_PRE
#ifdef TEXT_EDITOR_RC_ITEM_MENU_PRE
&& lastbutton != TEXT_EDITOR_RC_ITEM_MENU_PRE
#endif
)
break;
#endif
{ /* do the item menu */
switch (do_item_menu(cur_sel, copy_buffer))
{
case MENU_RET_SAVE:
save_changes(1);
changed = false;
break;
case MENU_RET_UPDATE:
changed = true;
break;
case MENU_RET_NO_UPDATE:
break;
}
}
break;
#endif /* TEXT_EDITOR_ITEM_MENU */
case TEXT_EDITOR_CANCEL:
#ifdef TEXT_EDITOR_CANCEL_PRE
if (last_button != TEXT_EDITOR_CANCEL_PRE)
break;
#endif
if (changed)
{
int m;
int result;
static const struct menu_item items[] = {
{ "Return", NULL },
{ " ", NULL },
{ "Save Changes", NULL },
{ "Save As...", NULL },
{ " ", NULL },
{ "Save and Exit", NULL },
{ "Ignore Changes and Exit", NULL },
};
m = rb->menu_init(items, sizeof(items) / sizeof(*items),
NULL, NULL, NULL, NULL);
result=rb->menu_show(m);
switch (result)
{
case 0:
break;
case 2: //save to disk
save_changes(1);
changed = 0;
break;
case 3:
save_changes(0);
changed = 0;
break;
case 5:
save_changes(1);
exit=1;
break;
case 6:
exit=1;
break;
}
rb->menu_exit(m);
}
else exit=1;
break;
}
last_button = button;
rb->gui_synclist_set_nb_items(&lists,line_count);
}
rb->global_settings->statusbar = prev_show_statusbar;
return PLUGIN_OK;
}
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