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rockbox/apps/plugins/text_editor.c
Jonathan Gordon f22dd51956 unused variable 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13902 a1c6a512-1295-4272-9138-f99709370657
2007-07-15 06:53:17 +00:00

500 lines
14 KiB
C
Raw Blame History

/***************************************************************************
* __________ __ ___.
* 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"
#include "action.h"
#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;
char_count -= len;
rb->memmove(&buffer[c],&buffer[c+len],char_count);
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 ...",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|O_TRUNC);
if (fd < 0)
{
rb->splash(HZ*2, "Changes NOT saved");
return;
}
if (!overwrite)
/* current directory may have changed */
rb->reload_directory();
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, false, 1);
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 ret = 0;
MENUITEM_STRINGLIST(menu, "Line Options", NULL,
"Cut/Delete", "Copy",
"Insert Above", "Insert Below",
"Concat To Above", "Save");
switch (rb->do_menu(&menu, NULL))
{
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: /* 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 3: /* 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 4: /* cat to above */
if (cur_sel>0)
{
do_action(ACTION_CONCAT,0,cur_sel);
ret = MENU_RET_UPDATE;
}
break;
case 5: /* save */
ret = MENU_RET_SAVE;
break;
default:
ret = MENU_RET_NO_UPDATE;
break;
}
return ret;
}
#ifdef HAVE_LCD_COLOR
/* in misc.h but no need to polute the api */
#define toupper(c) (((c >= 'a') && (c <= 'z'))?c+'A':c)
#define isxdigit(c) ((c>='a' && c<= 'f') || (c>='A' && c<= 'F') \
|| (c>='0' && c<= '9'))
#define hex2dec(c) (((c) >= '0' && ((c) <= '9')) ? (toupper(c)) - '0' : \
(toupper(c)) - 'A' + 10)
int hex_to_rgb(const char* hex)
{ int ok = 1;
int i;
int red, green, blue;
if (rb->strlen(hex) == 6) {
for (i=0; i < 6; i++ ) {
if (!isxdigit(hex[i])) {
ok=0;
break;
}
}
if (ok) {
red = (hex2dec(hex[0]) << 4) | hex2dec(hex[1]);
green = (hex2dec(hex[2]) << 4) | hex2dec(hex[3]);
blue = (hex2dec(hex[4]) << 4) | hex2dec(hex[5]);
return LCD_RGBPACK(red,green,blue);
}
}
return 0;
}
#endif /* HAVE_LCD_COLOR */
/* 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;
bool changed = false;
int cur_sel=0;
static char copy_buffer[MAX_LINE_LEN];
bool prev_show_statusbar;
#ifdef HAVE_LCD_COLOR
bool edit_colors_file = false;
#endif
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)
{
#ifdef HAVE_LCD_COLOR
char *c = NULL;
#endif
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,"Couldnt open file: %s",(char*)parameter);
return PLUGIN_ERROR;
}
#ifdef HAVE_LCD_COLOR
c = rb->strrchr(filename, '.');
if (c && !rb->strcmp(c, ".colours"))
edit_colors_file = true;
#endif
/* 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,"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)
{
rb->gui_synclist_draw(&lists);
cur_sel = rb->gui_synclist_get_sel_pos(&lists);
button = rb->get_action(CONTEXT_LIST,TIMEOUT_BLOCK);
if (rb->gui_synclist_do_button(&lists,button,LIST_WRAP_UNLESS_HELD))
continue;
switch (button)
{
case ACTION_STD_OK:
{
bool edit_text = true;
#ifdef HAVE_LCD_COLOR
int color;
#endif
if (line_count)
rb->strcpy(temp_line,&buffer[do_action(ACTION_GET,0,cur_sel)]);
#ifdef HAVE_LCD_COLOR
if (edit_colors_file)
{
char *name = temp_line, *value = NULL;
char extension[MAX_LINE_LEN];
rb->settings_parseline(temp_line, &name, &value);
if (line_count)
{
MENUITEM_STRINGLIST(menu, "Edit What?", NULL,
"Extension", "Color",);
switch (rb->do_menu(&menu, NULL))
{
case 0:
edit_text = true;
break;
case 1:
edit_text = false;
if (value)
color = hex_to_rgb(value);
else color = 0;
rb->strcpy(extension, name);
rb->set_color(rb->screens[SCREEN_MAIN], name, &color, -1);
rb->snprintf(temp_line, MAX_LINE_LEN, "%s: %02X%02X%02X",
extension, RGB_UNPACK_RED(color),
RGB_UNPACK_GREEN(color),
RGB_UNPACK_BLUE(color));
if (line_count)
{
do_action(ACTION_UPDATE,temp_line,cur_sel);
}
else do_action(ACTION_INSERT,temp_line,cur_sel);
changed = true;
break;
}
}
}
#endif
if (edit_text &&!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
case ACTION_STD_MENU:
{ /* 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;
case ACTION_STD_CANCEL:
if (changed)
{
MENUITEM_STRINGLIST(menu, "Do What?", NULL,
"Return", "Save Changes",
"Save As...", "Save and Exit",
"Ignore Changes and Exit");
switch (rb->do_menu(&menu, NULL))
{
case 0:
break;
case 1: //save to disk
save_changes(1);
changed = 0;
break;
case 2:
save_changes(0);
changed = 0;
break;
case 3:
save_changes(1);
exit=1;
break;
case 4:
exit=1;
break;
}
}
else exit=1;
break;
}
rb->gui_synclist_set_nb_items(&lists,line_count);
}
rb->global_settings->statusbar = prev_show_statusbar;
return PLUGIN_OK;
}
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