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#include <stdlib.h>
#include <errno.h>
#include "locus.h"
size_t
nprlen (unsigned x)
{
size_t len = 1;
while (x /= 10)
len++;
return len;
}
size_t
lpprlen (struct locus_point const *lp)
{
size_t len = 0;
if (lp->file)
{
len = strlen (lp->file) + 1 + nprlen (lp->line);
if (lp->col)
len += 1 + nprlen (lp->col);
}
return len;
}
size_t
lrprlen (struct locus_range const *lr)
{
size_t len;
len = lpprlen (&lr->end);
if (len)
len++;
len += lpprlen (&lr->beg);
return len;
}
enum
{
PR_NON = 0x00,
PR_FIL = 0x01,
PR_LIN = 0x02,
PR_COL = 0x04,
PR_ALL = PR_FIL|PR_LIN|PR_COL
};
static ssize_t
_numprint (char *p, unsigned num)
{
size_t len = 0;
char *q;
do
{
p[len++] = (num % 10) + '0';
}
while (num /= 10);
for (q = p + len - 1; q > p; p++, q--)
{
char t = *p;
*p = *q;
*q = t;
}
return len;
}
ssize_t
_lpprint (char *buf, struct locus_point const *lp, int pr)
{
size_t n = 0;
if (!lp->file)
pr &= ~PR_FIL;
if (!lp->col)
pr &= ~PR_COL;
if (pr & PR_FIL)
{
n = strlen (lp->file);
memcpy (buf, lp->file, n);
}
if (pr & PR_LIN)
{
if (pr & PR_FIL)
buf[n++] = ':';
n += _numprint (buf + n, lp->line);
}
if (pr & PR_COL)
{
if (pr & PR_LIN)
buf[n++] = '.';
n += _numprint (buf + n, lp->col);
}
return n;
}
ssize_t
locus_point_format (char **pbuf, size_t *psize, struct locus_point const *lp)
{
char *buf;
size_t size;
size_t prlen;
if (!pbuf || !psize || !lp)
{
errno = EINVAL;
return -1;
}
buf = *pbuf;
size = *psize;
prlen = lpprlen (lp);
if (prlen + 1 > size)
{
size = prlen + 1;
buf = realloc (buf, size);
if (!buf)
return -1;
*pbuf = buf;
*psize = size;
}
return _lpprint (buf, lp, PR_ALL);
}
ssize_t
locus_range_format (char **pbuf, size_t *psize, struct locus_range const *lr)
{
char *buf;
size_t size;
size_t prlen;
size_t n;
if (!pbuf || !psize || !lr)
{
errno = EINVAL;
return -1;
}
buf = *pbuf;
size = *psize;
prlen = lrprlen (lr);
if (prlen + 1 > size)
{
size = prlen + 1;
buf = realloc (buf, size);
if (!buf)
return -1;
*pbuf = buf;
*psize = size;
}
n = _lpprint (buf, &lr->beg, PR_ALL);
if (lr->end.file)
{
int flag = PR_NON;
if (!locus_point_same_file (&lr->beg, &lr->end))
flag = PR_ALL;
else if (lr->beg.line != lr->end.line)
flag = PR_LIN|PR_COL;
else if (lr->beg.col && lr->beg.col != lr->end.col)
flag = PR_COL;
if (flag != PR_NON)
{
buf[n++] = '-';
n += _lpprint (buf + n, &lr->end, flag);
}
}
buf[n] = 0;
return n;
}
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