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#include "fitz.h"
#include "muxps.h"
static inline int
xps_tolower(int c)
{
if (c >= 'A' && c <= 'Z')
return c + 32;
return c;
}
int
xps_strcasecmp(char *a, char *b)
{
while (xps_tolower(*a) == xps_tolower(*b))
{
if (*a++ == 0)
return 0;
b++;
}
return xps_tolower(*a) - xps_tolower(*b);
}
size_t
xps_strlcpy(char *dst, const char *src, size_t siz)
{
register char *d = dst;
register const char *s = src;
register int n = siz;
/* Copy as many bytes as will fit */
if (n != 0 && --n != 0) {
do {
if ((*d++ = *s++) == 0)
break;
} while (--n != 0);
}
/* Not enough room in dst, add NUL and traverse rest of src */
if (n == 0) {
if (siz != 0)
*d = '\0'; /* NUL-terminate dst */
while (*s++)
;
}
return(s - src - 1); /* count does not include NUL */
}
size_t
xps_strlcat(char *dst, const char *src, size_t siz)
{
register char *d = dst;
register const char *s = src;
register int n = siz;
int dlen;
/* Find the end of dst and adjust bytes left but don't go past end */
while (*d != '\0' && n-- != 0)
d++;
dlen = d - dst;
n = siz - dlen;
if (n == 0)
return dlen + strlen(s);
while (*s != '\0') {
if (n != 1) {
*d++ = *s;
n--;
}
s++;
}
*d = '\0';
return dlen + (s - src); /* count does not include NUL */
}
#define SEP(x) ((x)=='/' || (x) == 0)
static char *
xps_clean_path(char *name)
{
char *p, *q, *dotdot;
int rooted;
rooted = name[0] == '/';
/*
* invariants:
* p points at beginning of path element we're considering.
* q points just past the last path element we wrote (no slash).
* dotdot points just past the point where .. cannot backtrack
* any further (no slash).
*/
p = q = dotdot = name + rooted;
while (*p)
{
if(p[0] == '/') /* null element */
p++;
else if (p[0] == '.' && SEP(p[1]))
p += 1; /* don't count the separator in case it is nul */
else if (p[0] == '.' && p[1] == '.' && SEP(p[2]))
{
p += 2;
if (q > dotdot) /* can backtrack */
{
while(--q > dotdot && *q != '/')
;
}
else if (!rooted) /* /.. is / but ./../ is .. */
{
if (q != name)
*q++ = '/';
*q++ = '.';
*q++ = '.';
dotdot = q;
}
}
else /* real path element */
{
if (q != name+rooted)
*q++ = '/';
while ((*q = *p) != '/' && *q != 0)
p++, q++;
}
}
if (q == name) /* empty string is really "." */
*q++ = '.';
*q = '\0';
return name;
}
void
xps_absolute_path(char *output, char *base_uri, char *path, int output_size)
{
if (path[0] == '/')
{
xps_strlcpy(output, path, output_size);
}
else
{
xps_strlcpy(output, base_uri, output_size);
xps_strlcat(output, "/", output_size);
xps_strlcat(output, path, output_size);
}
xps_clean_path(output);
}
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