bool ksfu_readEntireFile(const char* const path,
char** data,
size_t* length)
{
struct stat st;
if(stat(path, &st) < 0)
{
KSLOG_ERROR("Could not stat %s: %s", path, strerror(errno));
return false;
}
void* mem = NULL;
int fd = open(path, O_RDONLY);
if(fd < 0)
{
KSLOG_ERROR("Could not open %s: %s", path, strerror(errno));
return false;
}
mem = malloc((size_t)st.st_size);
if(mem == NULL)
{
KSLOG_ERROR("Out of memory");
goto failed;
}
if(!ksfu_readBytesFromFD(fd, mem, (ssize_t)st.st_size))
{
goto failed;
}
close(fd);
*length = (size_t)st.st_size;
*data = mem;
return true;
failed:
close(fd);
if(mem != NULL)
{
free(mem);
}
return false;
}
bool ksfu_readEntireFile(const char* const path, char** data, int* length, int maxLength)
{
bool isSuccessful = false;
int bytesRead = 0;
char* mem = NULL;
int fd = -1;
int bytesToRead = maxLength;
struct stat st;
if(stat(path, &st) < 0)
{
KSLOG_ERROR("Could not stat %s: %s", path, strerror(errno));
goto done;
}
fd = open(path, O_RDONLY);
if(fd < 0)
{
KSLOG_ERROR("Could not open %s: %s", path, strerror(errno));
goto done;
}
if(bytesToRead == 0 || bytesToRead >= (int)st.st_size)
{
bytesToRead = (int)st.st_size;
}
else if(bytesToRead > 0)
{
if(lseek(fd, -bytesToRead, SEEK_END) < 0)
{
KSLOG_ERROR("Could not seek to %d from end of %s: %s", -bytesToRead, path, strerror(errno));
goto done;
}
}
mem = malloc((unsigned)bytesToRead + 1);
if(mem == NULL)
{
KSLOG_ERROR("Out of memory");
goto done;
}
if(!ksfu_readBytesFromFD(fd, mem, bytesToRead))
{
goto done;
}
bytesRead = bytesToRead;
mem[bytesRead] = '\0';
isSuccessful = true;
done:
if(fd >= 0)
{
close(fd);
}
if(!isSuccessful && mem != NULL)
{
free(mem);
mem = NULL;
}
*data = mem;
if(length != NULL)
{
*length = bytesRead;
}
return isSuccessful;
}