+size_t getline(char **line, size_t *n, FILE *fp)
+{
+ if (line == NULL || n == NULL || fp == NULL)
+ {
+ errno = EINVAL;
+ return -1;
+ }
+ if (*n==0 || !*line)
+ {
+ *line = NULL;
+ *n = 0;
+ }
+
+ size_t nread=0;
+ int c;
+ while ((c=getc(fp))!= EOF && c!='\n')
+ {
+ if ( ++nread>=*n )
+ {
+ *n += 255;
+ *line = realloc(*line, sizeof(char)*(*n));
+ }
+ (*line)[nread-1] = c;
+ }
+ if ( nread>=*n )
+ {
+ *n += 255;
+ *line = realloc(*line, sizeof(char)*(*n));
+ }
+ (*line)[nread] = 0;
+ return nread>0 ? nread : -1;
+
+}
+