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rockbox/apps/plugins/dict.c
Michael Giacomelli 6d5823f964 Commit FS#9617 - Keymaps for Plugins fuze by Thomas Martitz. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19673 a1c6a512-1295-4272-9138-f99709370657
2009-01-04 23:33:15 +00:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 Tomas Salfischberger
*
* 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"
PLUGIN_HEADER
/* save the plugin api pointer. */
static const struct plugin_api* rb;
/* screen info */
static int display_columns, display_lines;
/* Some lenghts */
#define WORDLEN 32 /* has to be the same in rdf2binary.c */
/* Struct packing */
#ifdef __GNUC__
#define STRUCT_PACKED __attribute__((packed))
#else
#define STRUCT_PACKED
#pragma pack (push, 2)
#endif
/* The word struct :) */
struct stWord
{
char word[WORDLEN];
long offset;
} STRUCT_PACKED;
/* A funtion to get width and height etc (from viewer.c) */
void init_screen(void)
{
#ifdef HAVE_LCD_BITMAP
int w,h;
rb->lcd_getstringsize("o", &w, &h);
display_lines = LCD_HEIGHT / h;
display_columns = LCD_WIDTH / w;
#else
display_lines = 2;
display_columns = 11;
#endif
}
/* global vars for pl_malloc() */
void *bufptr;
ssize_t bufleft;
/* simple function to "allocate" memory in pluginbuffer. */
void *pl_malloc(ssize_t size)
{
void *ptr;
ptr = bufptr;
if (bufleft < size)
{
return NULL;
}
else
{
bufptr += size;
bufleft -= size;
return ptr;
}
}
/* init function for pl_malloc() */
void pl_malloc_init(void)
{
bufptr = rb->plugin_get_buffer((size_t *)&bufleft);
}
/* for endian problems */
#ifdef ROCKBOX_BIG_ENDIAN
#define reverse(x) x
#else
long reverse (long N) {
unsigned char B[4];
B[0] = (N & 0x000000FF) >> 0;
B[1] = (N & 0x0000FF00) >> 8;
B[2] = (N & 0x00FF0000) >> 16;
B[3] = (N & 0xFF000000) >> 24;
return ((B[0] << 24) | (B[1] << 16) | (B[2] << 8) | (B[3] << 0));
}
#endif
/* TODO: Clean up, most use BUTTON_POWER, could be the #else case */
/* Button definitions */
#if CONFIG_KEYPAD == PLAYER_PAD
#define LP_QUIT BUTTON_STOP
#elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
(CONFIG_KEYPAD == IPOD_3G_PAD) || \
(CONFIG_KEYPAD == IPOD_1G2G_PAD)
#define LP_QUIT BUTTON_MENU
#elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
#define LP_QUIT BUTTON_PLAY
#elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == GIGABEAT_PAD
#define LP_QUIT BUTTON_POWER
#elif (CONFIG_KEYPAD == SANSA_E200_PAD) || \
(CONFIG_KEYPAD == SANSA_C200_PAD) || \
(CONFIG_KEYPAD == SANSA_CLIP_PAD) || \
(CONFIG_KEYPAD == SANSA_M200_PAD)
#define LP_QUIT BUTTON_POWER
#elif (CONFIG_KEYPAD == SANSA_FUZE_PAD)
/* TODO: #define LP_QUIT BUTTOM_HOME */
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == IRIVER_H10_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == MROBE500_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == MROBE100_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == GIGABEAT_S_PAD
#define LP_QUIT BUTTON_BACK
#elif CONFIG_KEYPAD == IAUDIO_M3_PAD
#define LP_QUIT BUTTON_RC_REC
#elif CONFIG_KEYPAD == COWOND2_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == IAUDIO67_PAD
#define LP_QUIT BUTTON_POWER
#elif CONFIG_KEYPAD == CREATIVEZVM_PAD
#define LP_QUIT BUTTON_BACK
#else
#define LP_QUIT BUTTON_OFF
#endif
/* data files */
/* FIXME: use "PLUGIN_APPS_DIR" */
#define DICT_INDEX ROCKBOX_DIR "/rocks/apps/dict.index"
#define DICT_DESC ROCKBOX_DIR "/rocks/apps/dict.desc"
/* the main plugin function */
enum plugin_status plugin_start(const struct plugin_api* api, const void* parameter)
{
char searchword[WORDLEN]; /* word to search for */
char *description; /* pointer to description buffer */
char *output; /* pointer to output buffer */
char *ptr, *space;
struct stWord word; /* the struct to read into */
int fIndex, fData; /* files */
int filesize, high, low, probe;
int lines, len, outputted, next;
/* plugin stuff */
(void)parameter;
rb = api;
/* get screen info */
init_screen();
/* get pl_malloc() buffer ready. */
pl_malloc_init();
/* init description buffer (size is because we don't have scrolling)*/
description = (char *)pl_malloc(display_columns * display_lines);
if (description == NULL)
{
DEBUGF("Err: failed to allocate description buffer.");
return PLUGIN_ERROR;
}
/* init output buffer */
output = (char *)pl_malloc(display_columns);
if (output == NULL)
{
DEBUGF("Err: failed to allocate output buffer.");
return PLUGIN_ERROR;
}
/* "clear" input buffer */
searchword[0] = '\0';
rb->kbd_input(searchword, sizeof(searchword)); /* get the word to search */
fIndex = rb->open(DICT_INDEX, O_RDONLY); /* index file */
if (fIndex < 0)
{
DEBUGF("Err: Failed to open index file.\n");
rb->splash(HZ*2, "Failed to open index.");
return PLUGIN_ERROR;
}
filesize = rb->filesize(fIndex); /* get filesize */
DEBUGF("Filesize: %d bytes = %d words \n", filesize,
(filesize / (int)sizeof(struct stWord)));
/* for the searching algorithm */
high = filesize / sizeof( struct stWord );
low = -1;
while (high - low > 1)
{
probe = (high + low) / 2;
/* Jump to word pointed by probe, and read it. */
rb->lseek(fIndex, sizeof(struct stWord) * probe, SEEK_SET);
rb->read(fIndex, &word, sizeof(struct stWord));
/* jump according to the found word. */
if (rb->strcasecmp(searchword, word.word) < 0)
{
high = probe;
}
else
{
low = probe;
}
}
/* read in the word */
rb->lseek(fIndex, sizeof(struct stWord) * low, SEEK_SET);
rb->read(fIndex, &word, sizeof(struct stWord));
/* Check if we found something */
if (low == -1 || rb->strcasecmp(searchword, word.word) != 0)
{
DEBUGF("Not found.\n");
rb->splash(HZ*2, "Not found.");
rb->close(fIndex);
return PLUGIN_OK;
}
DEBUGF("Found %s at offset %ld\n", word.word, reverse(word.offset));
/* now open the description file */
fData = rb->open(DICT_DESC, O_RDONLY);
if (fData < 0)
{
DEBUGF("Err: Failed to open description file.\n");
rb->splash(HZ*2, "Failed to open descriptions.");
rb->close(fIndex);
return PLUGIN_ERROR;
}
/* seek to the right offset */
rb->lseek(fData, (off_t)reverse(word.offset), SEEK_SET);
/* Read in the description */
rb->read_line(fData, description, display_columns * display_lines);
/* And print it to debug. */
DEBUGF("Description: %s\n", description);
/* get pointer to first char */
ptr = description;
lines = 0;
outputted = 0;
len = rb->strlen(description);
/* clear screen */
rb->lcd_clear_display();
/* for large screens display the searched word. */
if(display_lines > 4)
{
rb->lcd_puts(0, lines, searchword);
lines++;
}
/* TODO: Scroll, or just stop when there are to much lines. */
while (1)
{
/* copy one lcd line */
rb->strncpy(output, ptr, display_columns);
output[display_columns] = '\0';
/* typecast to kill a warning... */
if((int)rb->strlen(ptr) < display_columns)
{
rb->lcd_puts(0, lines, output);
lines++;
break;
}
/* get the last spacechar */
space = rb->strrchr(output, ' ');
if (space != NULL)
{
*space = '\0';
next = (space - (char*)output) + 1;
}
else
{
next = display_columns;
}
/* put the line on screen */
rb->lcd_puts(0, lines, output);
/* get output count */
outputted += rb->strlen(output);
if (outputted < len)
{
/* set pointer to the next part */
ptr += next;
lines++;
}
else
{
break;
}
}
rb->lcd_update();
/* wait for keypress */
while(rb->button_get(true) != LP_QUIT)
{
/* do nothing */
/* maybe define some keys for navigation here someday. */
}
rb->close(fIndex);
rb->close(fData);
return PLUGIN_OK;
}
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