-struct buf {
- char *p;
- size_t n, sz;
-};
-#define BUF_INIT { 0, 0, 0 }
-#define BUF_REWIND(b) do { (b)->n = 0; } while (0)
-#define BUF_FREE(b) do { \
- buf *_b = (b); \
- free(_b->p); _b->p = 0; _b->n = _b->sz = 0; \
-} while (0)
-#define BUF_PUTC(b, ch) do { \
- struct buf *_b = (b); \
- if (_b->n >= _b->sz) { \
- _b->sz = _b->sz ? 2*_b->sz : 32; \
- _b->p = realloc(_b->p, _b->sz); \
- if (!_b->p) bail("out of memory allocating %zu bytes", _b->sz); \
- } \
- _b->p[_b->n] = (ch); \
-} while (0)
-
-static int read_line(FILE *fp, struct buf *b)
-{
- int ch;
-
- ch = getc(fp);
- if (ch == EOF)
- return (-1);
- else if (ch != '\n') do {
- BUF_PUTC(b, ch); b->n++;
- ch = getc(fp);
- } while (ch != EOF && ch != '\n');
- BUF_PUTC(b, 0);
- return (0);
-}
-
-static double parse_float(const char **p_inout, double min, double max,
- const char *what)
-{
- const char *p;
- char *q;
- double x;
- int err;
-
- err = errno; errno = 0;
- p = *p_inout;
- x = strtod(p, &q);
- if (errno || x < min || x > max) bail("bad %s `%s'", what, p);
- *p_inout = q; errno = err;
- return (x);
-}
-
-static long parse_int(const char **p_inout, long min, long max,
- const char *what)
-{
- const char *p;
- char *q;
- long x;
- int err;
-
- err = errno; errno = 0;
- p = *p_inout;
- x = strtoul(p, &q, 0);
- if (errno || x < min || x > max) bail("bad %s `%s'", what, p);
- *p_inout = q; errno = err;
- return (x);
-}
-
-#define PRF_HYPHEN 1u
-static int parse_range(const char *p, unsigned f,
- secaddr *start_out, secaddr *end_out)
-{
- char *q;
- int err, rc;
- unsigned long start, end;
-
- err = errno;
-
- if (ISDIGIT(*p)) {
- start = strtoul(p, &q, 0);
- if (errno || start >= SECLIMIT) { rc = -1; goto end; }
- *start_out = start; p = q;
- } else if (!(f&PRF_HYPHEN))
- { rc = -1; goto end; }
- else
- start = 0;
-
- if (f&PRF_HYPHEN) {
- if (*p != '-') { rc = -1; goto end; }
- p++;
- } else {
- if (!ISSPACE(*p)) { rc = -1; goto end; }
- do p++; while (ISSPACE(*p));
- }
-
- if (ISDIGIT(*p)) {
- end = strtoul(p, &q, 0);
- if (errno || end > SECLIMIT || end < start) { rc = -1; goto end; }
- *end_out = end; p = q;
- } else if (!(f&PRF_HYPHEN))
- { rc = -1; goto end; }
-
- if (!(f&PRF_HYPHEN)) while (ISSPACE(*p)) p++;
- if (*p && ((f&PRF_HYPHEN) || *p != '#')) { rc = -1; goto end; }
-
- rc = 0;
-end:
- errno = err;
- return (rc);
-}
-