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#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include "yuri.h"
static int
_eat(struct uri *u, int index)
{
int i;
char **path;
free(u->path[index]);
for (i = index+1; i < u->npath; i++)
u->path[i-1] = u->path[i];
u->npath--;
if (u->npath == 0) {
free(u->path);
u->path = NULL;
} else {
path = realloc(u->path, sizeof(*u->path)*u->npath);
if (path == NULL)
return -1;
u->path = path;
}
return 0;
}
int
uri_normalize(struct uri *u)
{
int i;
int therewaspath;
if (u->scheme) {
for (i = 0; i < strlen(u->scheme); i++) {
if (isalpha(u->scheme[i]))
u->scheme[i] = tolower(u->scheme[i]);
}
}
if (u->authority.host) {
for (i = 0; i < strlen(u->authority.host); i++) {
if (isalpha(u->authority.host[i]))
u->authority.host[i] = tolower(u->authority.host[i]);
}
}
if (u->npath != 0)
therewaspath = 1;
else
therewaspath = 0;
for (i = 0; i < u->npath; i++) {
if (i != u->npath-1 || u->npath == 1) {
if (strcmp(u->path[i], "") == 0) {
if (_eat(u, i) == -1)
return -1;
i = 0; /* count altered, reset back */
}
}
}
for (i = 0; i < u->npath; i++) {
if (strcmp(u->path[i], ".") == 0) {
if (_eat(u, i) == -1)
return -1;
i = 0; /* count altered, reset back */
}
}
for (i = 0; i < u->npath; i++) {
if (strcmp(u->path[i], "..") == 0) {
if (_eat(u, i) == -1)
return -1;
if (i-1 >= 0) {
if (_eat(u, i-1) == -1)
return -1;
}
i = 0; /* count altered, reset back */
}
}
/* if there was a path and all redundant segments were remved
* we'd be left with no path and path list would be set to NULL
* indicating that path has never exists, we don't want that,
* so we just add an empty path back */
if (therewaspath && u->npath == 0) {
if (uri_append_path(u, "") == -1)
return -1;
}
return 0;
}
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