libutils/source/fs/FSUtils.cpp

153 lines
2.6 KiB
C++

#include <malloc.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include "FSUtils.h"
#include "CFile.hpp"
s32 FSUtils::LoadFileToMem(const char *filepath, u8 **inbuffer, u32 *size){
//! always initialze input
*inbuffer = NULL;
if(size)
*size = 0;
s32 iFd = open(filepath, O_RDONLY);
if (iFd < 0)
return -1;
u32 filesize = lseek(iFd, 0, SEEK_END);
lseek(iFd, 0, SEEK_SET);
u8 *buffer = (u8 *) malloc(filesize);
if (buffer == NULL)
{
close(iFd);
return -2;
}
u32 blocksize = 0x4000;
u32 done = 0;
s32 readBytes = 0;
while(done < filesize)
{
if(done + blocksize > filesize) {
blocksize = filesize - done;
}
readBytes = read(iFd, buffer + done, blocksize);
if(readBytes <= 0)
break;
done += readBytes;
}
close(iFd);
if (done != filesize)
{
free(buffer);
buffer = NULL;
return -3;
}
*inbuffer = buffer;
//! sign is optional input
if(size){
*size = filesize;
}
return filesize;
}
s32 FSUtils::CheckFile(const char * filepath){
if(!filepath)
return 0;
struct stat filestat;
char dirnoslash[strlen(filepath)+2];
snprintf(dirnoslash, sizeof(dirnoslash), "%s", filepath);
while(dirnoslash[strlen(dirnoslash)-1] == '/')
dirnoslash[strlen(dirnoslash)-1] = '\0';
char * notRoot = strrchr(dirnoslash, '/');
if(!notRoot)
{
strcat(dirnoslash, "/");
}
if (stat(dirnoslash, &filestat) == 0)
return 1;
return 0;
}
s32 FSUtils::CreateSubfolder(const char * fullpath){
if(!fullpath)
return 0;
s32 result = 0;
char dirnoslash[strlen(fullpath)+1];
strcpy(dirnoslash, fullpath);
s32 pos = strlen(dirnoslash)-1;
while(dirnoslash[pos] == '/')
{
dirnoslash[pos] = '\0';
pos--;
}
if(CheckFile(dirnoslash))
{
return 1;
}
else
{
char parentpath[strlen(dirnoslash)+2];
strcpy(parentpath, dirnoslash);
char * ptr = strrchr(parentpath, '/');
if(!ptr)
{
//!Device root directory (must be with '/')
strcat(parentpath, "/");
struct stat filestat;
if (stat(parentpath, &filestat) == 0)
return 1;
return 0;
}
ptr++;
ptr[0] = '\0';
result = CreateSubfolder(parentpath);
}
if(!result)
return 0;
if (mkdir(dirnoslash, 0777) == -1)
{
return 0;
}
return 1;
}
bool FSUtils::saveBufferToFile(const char * path, void * buffer, u32 size){
s32 res = open(path, O_CREAT | O_TRUNC | O_WRONLY);
close(res);
CFile file(path, CFile::WriteOnly);
if (!file.isOpen()){
return false;
}
file.write((const u8*) buffer,size);
file.close();
return true;
}