added a string split function

include/parse.h

@@ -2,21 +2,21 @@
 
 typedef struct
 {
-  size_t  admin_count;
-  char *  username;
-  char *  password;
-  char *  channel;
-  char *  server;
-  char ** admins;
-  int     port;
+  char * username;
+  char * password;
+  char * channel;
+  char * server;
+  int    port;
 } creds_t;
 
-VARDECL creds_t creds;
+extern creds_t creds;
 
-DECL char * dump(void);
-DECL char * raw(char const * const sql);
-DECL char * remind(char * who);
-DECL char * slurp(char const * fn);
+DECL char ** str_split(char const * s, char c);
+DECL void    split_clean(char ** split)
+DECL char *  dump(void);
+DECL char *  raw(char const * const sql);
+DECL char *  remind(char * who);
+DECL char *  slurp(char const * fn);
 DECL int  is_admin(char const * user);
 DECL void parse_admins(char * admin_string);
 DECL int  parse_pair(char const * buf, size_t const len);

src/parse.c

@@ -52,6 +52,67 @@ VARDECL size_t const cred_names_len[] =
 
 VARDECL creds_t creds = {0};
 
+DECL char **
+str_split(char const * s, char c)
+{
+  char ** ret = NULL;
+  size_t i = 0;
+
+  size_t current_token_i = 0;
+
+  size_t token_start_i = 0;
+  size_t tokens_q = 0;
+
+  /* count tokens */
+  for (i = 1; s[i]; ++i)
+  {
+    /* end of a token*/
+    if (s[i] == c && s[i - 1] != c)
+    { ++tokens_q; }
+  }
+  ++tokens_q;
+
+  ret = (char **)calloc(tokens_q + 1, sizeof(char *));
+  if (!ret)
+  { return ret; }
+
+  for (i = 1; s[i]; ++i)
+  {
+    
+    if (s[i] == c && s[i - 1] != c)
+    {
+      /* end of a token*/
+      ret[current_token_i] = strndup(s + token_start_i, i - token_start_i);
+      if (!ret[current_token_i])
+      {
+        split_clean(ret);
+        return NULL;
+      }
+      ++current_token_i;
+    }
+    else if (s[i] != c && s[i - 1] == c)
+    {
+      /* start of a token */
+      token_start_i = i;
+    }
+  }
+
+  /* Signal that the split array is ended (for iteration purposes) */
+  ret[current_token_i + 1] = NULL;
+
+  return ret;
+}
+
+DECL void
+split_clean(char ** split)
+{
+  while (*split)
+  {
+    free(*split);
+  }
+  free(split);
+}
+
 DECL char *
 slurp(char const * fn)
 {