At the moment the APIs can:

• Handle truetype fonts
• Handle some windows elements(buttons, text labels, checkboxes, etc.)
• Handle files&directories
• Handle hardware timers
• Handle MIDI files
• Handle WAV files
• Handle JPEG/PNG/BMP files

I’m also creating a language that will allow users to simply develope their own application directly on their Nintendo DS.

Stay Tuned!

This is a routine i wrote for reading Unicode from UTF8 data.

u32 UTF8_To_Unicode(u8* src2, u8* nbyte){
u8* src=src2;
*nbyte=1;
if(*src==0)return 0;
if((*src&128)==0)return *src;
u32 value=0;
u8 curbit=7;
*nbyte=0;
while(*src&(1<<curbit)){
*nbyte++;
curbit–;
}
if(*nbyte==0×02){
value|=(*src&31)<<6;
src++;
if((*src&192)!=128){
*nbyte=(u8)(src-src2);
return 32;
}
value|=(*src&63);
}else if(*nbyte==0×03){
value|=(*src&15)<<12;
src++;
if((*src&192)!=128){
*nbyte=(u8)(src-src2);
return 32;
}
value|=(*src&63)<<6;
src++;
if((*src&192)!=128){
*nbyte=(u8)(src-src2);
return 32;
}
value|=(*src&63);
}else if(*nbyte==0×04){
value|=(*src&7)<<18;
src++;
if((*src&192)!=128){
*nbyte=(u8)(src-src2);
return 32;
}
value|=(*src&63)<<12;
src++;
if((*src&192)!=128){
*nbyte=(u8)(src-src2);
return 32;
}
value|=(*src&63)<<6;
src++;
if((*src&192)!=128){
*nbyte=(u8)(src-src2);
return 32;
}
value|=(*src&63);
}
return value;
}

To use it just do something like this:

u8 buffer[3]={0xE2, 0×82, 0xAC}; //UTF8 value of €

u8 nbyte; //This will contain the byte length of the UTF8 character, this will be useful for jumping to the next character in a UTF8 sequence.

u32 unicode = UTF8_To_Unicode(buffer, &nbyte); //This will contain the unicode of your UTF8 character.

That’s all. Just a thing, remember that if the sequence has error the function will return 32(SPACE character, ‘ ‘).

Let me know about errors or tips.

One uses the Dir Delete function, and one the File Search function.

The “bonus” project uses a function that compute the size of a directory(including sub-folders and sub-files).

Downloads:

DirDelete

FileSearch

DirSize

/*
Copyright (C) 2009-2010 Aurelio Mannara

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 program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include <iostream>
#include <dirent.h>
#include <sys/stat.h>

using namespace std;

typedef struct{
char* fullpath;
}files_t;

files_t* searchfiles;
int searchcount;

int SearchWord(const char* text, const char* word){
int lent=strlen(text);
int lenw=strlen(word);
char check[lenw+1];
for(int i=0;i<lent;i++){
for(int j=0;j<lenw;j++){
check[j]=text[i+j];
}
check[lenw]=”;
if(strcmp(check, word)==0)return i;
}
return -1;
}

int Search(const char* dirn, const char* word){
DIR* dir;
struct dirent *dirp;
if((dir=opendir(dirn))==NULL){
return 0;
}
struct stat st;
if(searchfiles==NULL)searchfiles=(files_t*)malloc(0);
while((dirp=readdir(dir))!=NULL){
char name[256];
sprintf(name, “%s/%s”, dirn, dirp->d_name);
if((strcmp(dirp->d_name, “.”)==0)||(strcmp(dirp->d_name, “..”)==0))continue;
stat(name, &st);
strlwr(dirp->d_name);
if(SearchWord(dirp->d_name, word)!=-1){
searchfiles=(files_t*)realloc(searchfiles, (searchcount+1)*sizeof(files_t));
searchfiles[searchcount].fullpath=(char*)malloc(strlen(name)+1);
sprintf(searchfiles[searchcount].fullpath, “%s”, name);
searchcount++;
}
if((st.st_mode&S_IFDIR)){
Search(name, word);
}
}
return searchcount;
}

void ResetSearch(){
if(searchfiles!=NULL){
for(int i=0;i<searchcount;i++){
free(searchfiles[i].fullpath);
}
free(searchfiles);
searchfiles=NULL;
}
searchcount=0;
}

int main()
{
ResetSearch();
int count=Search(“C:/”,”filetosearch”);
for(int i=0;i<count;i++)printf(“%s\n”, searchfiles[i].fullpath);
printf(“\n%d files found\n”, count);
return 0;
}