crashtest-r0ket/firmware/filesystem/select.c

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#include <string.h>
#include "sysdefs.h"
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#include "lcd/lcd.h"
#include "lcd/fonts/smallfonts.h"
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#include "lcd/print.h"
#include "filesystem/ff.h"
#include "basic/basic.h"
#define FLEN 13
/* if count is 0xff (-1) do not fill files and return the count instead */
int getFiles(char files[][FLEN], uint8_t count, uint16_t skip, const char *ext)
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{
DIR dir; /* Directory object */
FILINFO Finfo;
FRESULT res;
int pos = 0;
int extlen = strlen(ext);
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res = f_opendir(&dir, "0:");
if(res){
//lcdPrint("OpenDir:"); lcdPrintln(f_get_rc_string(res)); lcdRefresh();
return 0;
};
while(f_readdir(&dir, &Finfo) == FR_OK && Finfo.fname[0]){
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int len=strlen(Finfo.fname);
if(len<extlen)
continue;
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if( strcmp(Finfo.fname+len-extlen, ext) != 0)
continue;
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if (Finfo.fattrib & AM_DIR)
continue;
if( skip>0 ){
skip--;
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continue;
};
if(count != 0xff)
strcpy(files[pos],Finfo.fname);
pos++;
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if( pos == count )
break;
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}
return pos;
}
#define PERPAGE 7
int selectFile(char *filename, const char *extension)
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{
int skip = 0;
char key;
int selected = 0;
int file_count = getFiles(NULL, 0xff, 0, extension);
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font=&Font_7x8;
if(!file_count){
lcdPrintln("No Files?");
lcdRefresh();
getInputWait();
getInputWaitRelease();
return -1;
};
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while(1){
char files[PERPAGE][FLEN];
int count = getFiles(files, PERPAGE, skip, extension);
if(count<PERPAGE && selected==count){
skip--;
continue;
};
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redraw:
lcdClear();
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lcdPrintln("Select file:");
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for(int i=0; i<count; i++){
if( selected == i )
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lcdPrint("*");
else
lcdPrint(" ");
lcdSetCrsrX(14);
int dot=-1;
for(int j=0;files[j];j++)
if(files[i][j]=='.'){
files[i][j]=0;
dot=j;
break;
};
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lcdPrintln(files[i]);
if(dot>0)
files[i][dot]='.';
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}
lcdRefresh();
key=getInputWait();
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getInputWaitRelease();
switch(key){
case BTN_DOWN:
if( selected < count-1 ){
selected++;
goto redraw;
}else{
if(skip == file_count - PERPAGE) { // wrap to top
selected = 0;
skip = 0;
} else
skip++;
}
break;
case BTN_UP:
if( selected > 0 ){
selected--;
goto redraw;
}else{
if( skip > 0 ){
skip--;
} else { // wrap to bottom
skip = file_count - PERPAGE;
if(skip < 0) skip = 0;
selected = file_count - skip - 1;
}
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}
break;
case BTN_LEFT:
return -1;
case BTN_ENTER:
case BTN_RIGHT:
strcpy(filename, files[selected]);
return 0;
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}
}
}