rockbox/apps/plugins/text_editor.c
Andrew Mahone 23d9812273 loader-initialized global plugin API:
struct plugin_api *rb is declared in PLUGIN_HEADER, and pointed to by
__header.api

the loader uses this pointer to initialize rb before calling entry_point

entry_point is no longer passed a pointer to the plugin API

all plugins, and pluginlib functions, are modified to refer to the
global rb

pluginlib functions which only served to copy the API pointer are
removed

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19776 a1c6a512-1295-4272-9138-f99709370657
2009-01-16 10:34:40 +00:00

508 lines
15 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Jonathan Gordon
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "plugin.h"
#include "lib/playback_control.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 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, size_t buf_len)
{
(void)data;
char *b = &buffer[do_action(ACTION_GET,0,selected_item)];
if (rb->strlen(b) >= buf_len)
{
char t = b[buf_len-10];
b[buf_len-10] = '\0';
rb->snprintf(buf , buf_len, "%s ...", b);
b[buf_len-10] = t;
}
else rb->strncpy(buf, b, buf_len);
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->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, NULL);
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",
"Show Playback Menu",);
switch (rb->do_menu(&menu, NULL, NULL, false))
{
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;
case 6: /* playback menu */
playback_control(NULL);
ret = MENU_RET_UPDATE;
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* color)
{ 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]);
*color = LCD_RGBPACK(red,green,blue);
return 0;
}
}
return -1;
}
#endif /* HAVE_LCD_COLOR */
/* this is the plugin entry point */
enum plugin_status plugin_start(const 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
copy_buffer[0]='\0';
prev_show_statusbar = rb->global_settings->statusbar;
rb->global_settings->statusbar = false;
#if LCD_DEPTH > 1
rb->lcd_set_backdrop(NULL);
#endif
#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->splashf(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->splashf(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, NULL, false))
{
case 0:
edit_text = true;
break;
case 1:
edit_text = false;
if (value)
hex_to_rgb(value, &color);
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;
case ACTION_STD_CONTEXT:
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;
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",
"Show Playback Menu", "Save Changes",
"Save As...", "Save and Exit",
"Ignore Changes and Exit");
switch (rb->do_menu(&menu, NULL, NULL, false))
{
case 0:
break;
case 1:
playback_control(NULL);
break;
case 2: //save to disk
save_changes(1);
changed = 0;
break;
case 3:
save_changes(0);
changed = 0;
break;
case 4:
save_changes(1);
exit=1;
break;
case 5:
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;
}