31 May
2012
31 May
'12
11:56 a.m.
On Thu, 31 May 2012, Jason White <jason(a)jasonjgw.net> wrote:
If you pass buf_len=0 or buf_len=1 you would get yourself a buffer overflow. Maybe that
doesn't really matter in your case if you use hardcoded inputs, but I'd still
check for it to save from puzzling crashes if you re-use the code in future.
James
You could write a function to do this without
much trouble though.
Below is my rough analog to fgets() which takes either \r or \n as the end of a
line. It works because I don't mind getting the occasional empty line in the
middle of the file, programs which can't handle extra empty lines won't work
with this.
int get_line(char *buf, int buf_len, FILE *fp) {
int c, i = 0;
while((c = fgetc(fp)) != EOF)
{
if(c == '\r' || c == '\n')
{
buf[i] = 0;
return 1;
}
buf[i] = (char)c;
i++;
if(i == buf_len - 1)
{
buf[i] = 0;
return 1;
}