[ADD/WIP] Create and use basic command parser

Still need to write the router.

src/Command/Parser.c

@@ -0,0 +1,133 @@
+#include <Command.h>
+
+#include <Cytoplasm/Memory.h>
+#include <Cytoplasm/Str.h>
+#include <string.h>
+#include <ctype.h>
+
+typedef enum CommandState {
+    STATE_WHITE,
+    STATE_NAME,
+    STATE_VALUE
+} CommandState;
+
+Command *
+CommandParse(char *cmd)
+{
+    Command *ret;
+    char *end_data, *cur, *namestart;
+    char *key = NULL, *val = NULL;
+    size_t len;
+    CommandState state = STATE_WHITE;
+    if (!cmd)
+    {
+        return NULL;
+    }
+
+    end_data = strchr(cmd, ' ');
+    if (!end_data)
+    {
+        ret = Malloc(sizeof(*ret));
+        ret->command = StrDuplicate(cmd);
+        ret->arguments = HashMapCreate();
+
+        return ret;
+    }
+
+    len = end_data - cmd;
+    ret = Malloc(sizeof(*ret));
+    ret->arguments = HashMapCreate();
+    ret->command = Malloc(len + 1);
+    memcpy(ret->command, cmd, len);
+    ret->command[len] = '\0';
+    
+    cur = end_data + 1;
+
+    /* Parse arguments */
+    while (*cur)
+    {
+        char c = *cur;
+        char *tmp;
+        bool type;
+        switch (state)
+        {
+            case STATE_WHITE:
+                if (!isblank(c))
+                {
+                    state = STATE_NAME;
+                    namestart = cur;
+                    continue;
+                }
+                break;
+            case STATE_NAME:
+                if (c == '=')
+                {
+                    len = cur - namestart;
+                    key = Malloc(len + 1);
+                    memcpy(key, namestart, len);
+                    key[len] = '\0';
+                    state = STATE_VALUE;
+                    cur++;
+                    val = NULL;
+                    continue;
+                }
+                break;
+            case STATE_VALUE:
+                type = c == '"';
+                if (type)
+                {
+                    cur++;
+                }
+                while (*cur)
+                {
+                    char c = *cur;
+                    char cb[2] = { c, '\0' };
+                    if ((type && c == '"') || (!type && isblank(c)))
+                    {
+                        break;
+                    }
+
+                    if (c == '\\' && *(cur + 1) == '"')
+                    {
+                        cb[0] = '"';
+                        cur++;
+                    }
+                    tmp = val;
+                    val = StrConcat(2, val, cb);
+                    Free(tmp);
+                    
+                    cur++;
+                }
+                Free(HashMapSet(ret->arguments, key, val));
+                Free(key);
+                key = NULL;
+                val = NULL;
+                state = STATE_WHITE;
+                break;
+        }
+        cur++;
+    }
+    Free(key);
+    Free(val);
+
+    return ret;
+}
+
+void
+CommandFree(Command *command)
+{
+    char *key, *val;
+    if (!command)
+    {
+        return;
+    }
+
+    while (HashMapIterate(command->arguments, &key, (void **) &val))
+    {
+        Free(val);
+    }
+    HashMapFree(command->arguments);
+
+    Free(command->command);
+    Free(command);
+}

src/Command/Router.c

@@ -0,0 +1,49 @@
+#include <Command.h>
+
+#include <Cytoplasm/Memory.h>
+
+struct CommandRouter {
+    HashMap *routes;
+};
+CommandRouter *
+CommandCreateRouter(void)
+{
+    CommandRouter *router = Malloc(sizeof(*router));
+    router->routes = HashMapCreate();
+    return router;
+}
+void
+CommandAddCommand(CommandRouter *rter, char *c, CommandRoute rte)
+{
+    if (!rter || !c || !rte)
+    {
+        return;
+    }
+    HashMapSet(rter->routes, c, rte);
+}
+void
+RouteCommand(CommandRouter *rter, Command *cmd, void *d)
+{
+    CommandRoute route;
+    if (!rter || !cmd)
+    {
+        return;
+    }
+
+    route = HashMapGet(rter->routes, cmd->command);
+    if (route)
+    {
+        route(cmd, d);
+    }
+}
+void
+CommandFreeRouter(CommandRouter *rter)
+{
+    if (!rter)
+    {
+        return;
+    }
+
+    HashMapFree(rter->routes);
+    Free(rter);
+}

src/MatrixEventHandler.c

@@ -73,6 +73,7 @@ ParseeBotHandler(ParseeData *data, HashMap *event)
         "@", data->config->sender_localpart, 
         ":", data->config->homeserver_host
     );
+    Command *cmd;
 
     if (StrEquals(msgtype, "m.notice"))
     {
@@ -107,14 +108,14 @@ ParseeBotHandler(ParseeData *data, HashMap *event)
 #define BAN_USER    "ban-user"
 #define BAN_LIST    "ban-list"
 #define LS_USERS    "ls-flying"
-    if (!strncmp(body, BAN_USER, strlen(BAN_USER)))
+    cmd = CommandParse(body);
+    if (cmd && StrEquals(cmd->command, BAN_USER))
     {
-        char user[256] = { 0 };
-        char room[256] = { 0 };
+        char *user = HashMapGet(cmd->arguments, "user");
+        char *room = HashMapGet(cmd->arguments, "user");
         char *msg;
 
-        body += strlen(BAN_USER);
-        if (sscanf(body, "%255s %255s", &user, &room) != 2)
+        if (!user || !room)
         {
             goto end;
         }
@@ -128,7 +129,7 @@ ParseeBotHandler(ParseeData *data, HashMap *event)
         ));
         Free(msg);
     }
-    else if (!strncmp(body, LS_USERS, strlen(LS_USERS)))
+    else if (cmd && StrEquals(cmd->command, LS_USERS))
     {
         DbRef *listed = DbLock(data->db, 1, "global_bans");
         HashMap *json = DbJson(listed);
@@ -156,13 +157,12 @@ ParseeBotHandler(ParseeData *data, HashMap *event)
         Free(str);
         DbUnlock(data->db, listed);
     }
-    else if (!strncmp(body, BAN_LIST, strlen(BAN_LIST)))
+    else if (cmd && StrEquals(cmd->command, BAN_LIST))
     {
-        char user[256] = { 0 };
+        char *user = HashMapGet(cmd->arguments, "user");
         char *msg;
 
-        body += strlen(BAN_USER);
-        if (sscanf(body, "%255s", &user) != 1)
+        if (!user)
         {
             goto end;
         }
@@ -178,6 +178,7 @@ ParseeBotHandler(ParseeData *data, HashMap *event)
     }
 end: 
     Free(profile);
+    CommandFree(cmd);
 }
 static void
 ParseeMessageHandler(ParseeData *data, HashMap *event)

src/Parsee/Data.c

@@ -24,6 +24,7 @@ ParseeInitData(XMPPComponent *comp)
     data->config = ParseeConfigGet();
     data->router = HttpRouterCreate();
     data->jabber = comp;
+    data->handler = CommandCreateRouter();
     data->db = DbOpen(data->config->db_path, 0);
 
 #define X_ROUTE(path, func) do {\
@@ -48,6 +49,7 @@ ParseeFreeData(ParseeData *data)
     XMPPEndCompStream(data->jabber);
     DbClose(data->db);
     HttpRouterFree(data->router);
+    CommandFreeRouter(data->handler);
     Free(data);
 }
 

src/include/Command.h

@@ -0,0 +1,21 @@
+#ifndef PARSEE_COMMAND_H
+#define PARSEE_COMMAND_H
+
+#include <Cytoplasm/HashMap.h>
+
+typedef struct Command {
+    char *command;
+    HashMap *arguments;
+} Command;
+
+typedef struct CommandRouter CommandRouter;
+typedef void (*CommandRoute)(Command *cmd, void *data);
+
+extern CommandRouter * CommandCreateRouter(void);
+extern void CommandAddCommand(CommandRouter *rter, char *c, CommandRoute rte);
+extern void RouteCommand(CommandRouter *rter, Command *cmd, void *data);
+extern void CommandFreeRouter(CommandRouter *rter);
+
+extern Command * CommandParse(char *cmd);
+extern void CommandFree(Command *command);
+#endif

src/include/Parsee.h

@@ -9,6 +9,7 @@
 
 #include <pthread.h>
 
+#include <Command.h>
 #include <XMPP.h>
 
 typedef struct ParseeConfig {
@@ -43,6 +44,7 @@ typedef struct ParseeConfig {
 typedef struct ParseeData {
     const ParseeConfig *config;
     HttpRouter *router;
+    CommandRouter *handler;
 
     XMPPComponent *jabber;