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Refactor GENERIC_RESOURCE macro

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Now callback functions get the URI of the request, this allows to use a
single resource for multiple different URIs.
The is_json flag is now gone for the to-string function, instead the
macro has an is_str flag. If set this automagically produces quotes
around the string for json output.
Now from-string functions can return an error-code, 0 for success, -1
for error.
This commit is contained in:
Ralf Schlatterbeck 2016-02-26 07:54:05 +01:00
parent c7daa7c45d
commit c6165a3bcf
9 changed files with 106 additions and 68 deletions
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33
examples/osd/poti/poti.c
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@ -77,74 +77,73 @@ char server_resource [20] = "led/G";
int interval = 10; /* Retransmit interval after no change in value */
static size_t
ip_to_string (const char *name, uint8_t is_json, char *buf, size_t bsize)
ip_to_string (const char *name, const char *uri, char *buf, size_t bsize)
{
#define IP(x) UIP_NTOHS(server_ipaddr.u16[x])
char *q = "\"";
if (!is_json) {
q = "";
}
return snprintf
( buf, bsize, "%s%x:%x:%x:%x:%x:%x:%x:%x%s"
, q, IP(0), IP(1), IP(2), IP(3), IP(4), IP(5), IP(6), IP(7), q
( buf, bsize, "%x:%x:%x:%x:%x:%x:%x:%x"
, IP(0), IP(1), IP(2), IP(3), IP(4), IP(5), IP(6), IP(7)
);
}
void ip_from_string (const char *name, const char *s)
int ip_from_string (const char *name, const char *uri, const char *s)
{
/* Returns 1 if successful, only copy valid address */
if (uiplib_ip6addrconv (s, &tmp_addr)) {
uip_ip6addr_copy (&server_ipaddr, &tmp_addr);
return 0;
}
return -1;
}
GENERIC_RESOURCE
( server_ip
, ip
, ipv6_address
, 1
, ip_from_string
, ip_to_string
);
static size_t
resource_to_string (const char *name, uint8_t is_json, char *buf, size_t bsize)
resource_to_string (const char *name, const char *uri, char *buf, size_t bsize)
{
char *q = "\"";
if (!is_json) {
q = "";
}
return snprintf (buf, bsize, "%s%s%s", q, server_resource, q);
return snprintf (buf, bsize, "%s", server_resource);
}
void resource_from_string (const char *name, const char *s)
int resource_from_string (const char *name, const char *uri, const char *s)
{
strncpy (server_resource, s, sizeof (server_resource));
server_resource [sizeof (server_resource) - 1] = 0;
return 0;
}
GENERIC_RESOURCE
( server_resource
, led-resource
, resource-name
, 1
, resource_from_string
, resource_to_string
);
static size_t
interval_to_string (const char *name, uint8_t is_json, char *buf, size_t bsize)
interval_to_string (const char *name, const char *uri, char *buf, size_t bsize)
{
return snprintf (buf, bsize, "%d", interval);
}
void interval_from_string (const char *name, const char *s)
int interval_from_string (const char *name, const char *uri, const char *s)
{
interval = atoi (s);
return 0;
}
GENERIC_RESOURCE
( interval
, interval
, s
, 0
, interval_from_string
, interval_to_string
);