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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);
}
#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;
}
/* RJW: Possible problems here:
* "/foo" + "../../bar" = "/bar" not "../bar"
* "http://something/" + ... doesn't work.
*/
void
xps_absolute_path(char *output, char *base_uri, char *path, int output_size)
{
if (path[0] == '/')
{
fz_strlcpy(output, path, output_size);
}
else
{
fz_strlcpy(output, base_uri, output_size);
fz_strlcat(output, "/", output_size);
fz_strlcat(output, path, output_size);
}
xps_clean_path(output);
}
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