added code to parse urls

lib/wsfsp/url.c

@@ -0,0 +1,131 @@
+#include "wsfsp/url.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+struct wsfsp_url_protocol
+{
+    char const * name;
+    size_t name_length;
+    int default_port;
+};
+
+static bool wsfsp_url_readprotocol(
+    struct wsfsp_url * url,
+    char const * * data)
+{
+    static struct wsfsp_url_protocol const known_protocols[] =
+    {
+        {"ws://", 5, 80},
+        {"wss://", 6, 443}
+    };
+    static size_t const count = (sizeof(known_protocols) / sizeof(known_protocols[0]));
+
+    bool found = false;
+    for(size_t i = 0; (!found) && (i < count); i++)
+    {
+        struct wsfsp_url_protocol const * protocol = &known_protocols[i];
+        if (0 == strncmp(*data, protocol->name, protocol->name_length))
+        {
+            url->port = protocol->default_port;
+            *data = *data + protocol->name_length;
+            found = true;
+        }
+    }
+
+    return found;
+}
+
+static bool wsfsp_url_readhost(
+    struct wsfsp_url * url,
+    char const * * data)
+{
+    char * end = strpbrk(*data, ":/");
+    bool const result = (NULL != end);
+
+    if (result)
+    {
+        size_t length = end - *data;
+        url->host = strndup(*data, length);
+        *data = end;
+    }
+
+    return result;
+}
+
+static bool wsfsp_url_readport(
+    struct wsfsp_url * url,
+    char const * * data)
+{
+    bool result;
+
+    if (':' == **data)
+    {
+        *data = *data + 1;
+        char * end = strchr(*data, '/');
+        result = (NULL != end);
+
+        if (result)
+        {
+            url->port = atoi(*data);
+            *data = end;
+        }
+    }
+    else
+    {
+        result = ('/' == **data);
+    }
+
+    return result;
+}
+
+static bool wsfsp_url_readpath(
+    struct wsfsp_url * url,
+    char const * * data)
+{
+    bool const result = ('/' == **data);
+    url->path = strdup(*data);
+    *data = NULL;
+
+    return result;
+}
+
+
+bool wsfsp_url_init(
+    struct wsfsp_url * url,
+    char const * value)
+{
+    memset(url, 0, sizeof(struct wsfsp_url));
+    char const * data = value;
+
+    bool const result = 
+        wsfsp_url_readprotocol(url, &data) &&
+        wsfsp_url_readhost(url, &data) &&
+        wsfsp_url_readport(url, &data) &&
+        wsfsp_url_readpath(url, &data)
+        ;
+
+    if (!result)
+    {
+        wsfsp_url_cleanup(url);
+    }
+
+    return result;
+}
+
+void wsfsp_url_cleanup(
+    struct wsfsp_url * url)
+{    
+    free(url->host);
+    free(url->path);
+    memset(url, 0, sizeof(struct wsfsp_url));
+}
+
+char const * wsfsp_url_gethost(
+    struct wsfsp_url const * url);
+
+int wsfsp_url_getport(
+    struct wsfsp_url const * url);
+
+char const * wsfsp_url_getpath(
+    struct wsfsp_url const * url);

lib/wsfsp/url.h

@@ -0,0 +1,32 @@
+#ifndef WSFSP_URL_H
+#define WSFSP_URL_H
+
+#ifndef __cplusplus
+#include <stdbool.h>
+#endif
+
+struct wsfsp_url
+{
+    char * host;
+    int port;
+    char * path;
+};
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+extern bool wsfsp_url_init(
+    struct wsfsp_url * url,
+    char const * value);
+
+extern void wsfsp_url_cleanup(
+    struct wsfsp_url * url);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif