filesystems: add new category for file systems and related utilities

The filesystems category houses file systems and file system utilities.
It is added mainly to turn the sysutils/fusefs-* pseudo-category into
a proper one, but is also useful for the sundry of other file systems
related ports found in the tree.

Ports that seem like they belong there are moved to the new category.
Two ports, sysutils/fusefs-funionfs and sysutils/fusefs-fusepak are
not moved as they currently don't fetch and don't have TIMESTAMP set
in their distinfo, but that is required to be able to push a rename
of the port by the pre-receive hook.

Approved by:	portmgr (rene)
Reviewed by:	mat
Pull Request:	https://github.com/freebsd/freebsd-ports/pull/302
PR:		281988

1 files changed, 75 insertions, 0 deletions

diff --git a/filesystems/curlftpfs/files/patch-path__utils.c b/filesystems/curlftpfs/files/patch-path__utils.c
new file mode 100644
index 000000000000..7855c90e7043
--- /dev/null
+++ b/filesystems/curlftpfs/files/patch-path__utils.c
@@ -0,0 +1,75 @@
+--- path_utils.c.orig	2007-11-20 19:27:58 UTC
++++ path_utils.c
+@@ -92,3 +92,72 @@ char* get_dir_path(const char* path) {
+ 
+   return ret;
+ }
++
++/*
++ * the chars not needed to be escaped:
++ *    unreserved  = ALPHA / DIGIT / "-" / "." / "_" / "~"
++ */
++static inline int is_unreserved_rfc3986(char c)
++{
++    int is_locase_alpha = (c >= 'a' && c <= 'z');
++    int is_upcase_alpha = (c >= 'A' && c <= 'Z');
++    int is_digit        = (c >= '0' && c <= '9');
++    int is_special      = c == '-'
++                       || c == '.'
++                       || c == '_'
++                       || c == '~';
++    int is_unreserved = is_locase_alpha
++                      || is_upcase_alpha
++                      || is_digit
++                      || is_special;
++
++    return is_unreserved;
++}
++
++static inline int is_unreserved(char c)
++{
++    return is_unreserved_rfc3986(c) || c == '/';
++}
++
++char* path_to_uri(const char* path)
++{
++    static const char hex[] = "0123456789ABCDEF";
++    size_t path_len = strlen(path);
++    size_t host_len = strlen(ftpfs.host);
++    /* at worst: c -> %XX */
++    char * encoded_path = malloc (3 * path_len + 1);
++    const char * s = path;
++    char * d       = encoded_path;
++
++    /*
++     * 'path' is always prefixed with 'ftpfs.host'
++     */
++    memcpy (d, ftpfs.host, host_len);
++    s += host_len;
++    d += host_len;
++
++    for (; *s; ++s)
++    {
++        char c = *s;
++        if (is_unreserved (c))
++        {
++            *d++ = c;
++        }
++        else
++        {
++            unsigned int hi = ((unsigned)c >> 4) & 0xF;
++            unsigned int lo = ((unsigned)c >> 0) & 0xF;
++            *d++ = '%';
++            *d++ = hex[hi];
++            *d++ = hex[lo];
++        }
++    }
++    *d = '\0';
++
++    return encoded_path;
++}
++
++void free_uri(char* path)
++{
++    free(path);
++}