1 files changed, 19 insertions, 2 deletions
diff --git a/cmds.c b/cmds.c
index 0148c7b..2a88041 100644
--- a/cmds.c
+++ b/cmds.c
@@ -4,6 +4,7 @@
 #include <math.h>
 #include <stdlib.h>
 #include <err.h>
+#include <string.h>
 
 stack fceil(stack stack) {
   stack.val[stack.count-1] = ceil(stack.val[stack.count-1]);
@@ -21,10 +22,26 @@ command CMD_LIST[] = {
   {0, 0, 0}
 };
 
-void initstate(state *s) {
+void init_state(state *s) {
   int numel = 0;
   for (int i = 0; CMD_LIST[i].name != 0; i++) numel = i;
-  char *sorted = malloc(sizeof(char *)*numel);
+  command *sorted = malloc(sizeof(command *)*numel);
   if (sorted == NULL) err(1, "could not allocate function names");
   /* todo: (merge, heap, quick) sort? */
+  for (int i = 0; CMD_LIST[i].name != 0; i++) {
+    sorted[i] = CMD_LIST[i];
+  }
+  s->sorted = sorted;
+}
+
+void exec(char *buf, state *s) {
+  /* change this to a binary tree search */
+  for (int i = 0; s->sorted[i].name != 0; i++) {
+    if (strcmp(buf, s->sorted[i].name) == 0) {
+      fprintf(s->defout, "executing function: %s\n", s->sorted[i].name);
+      s->stk = s->sorted[i].exec(s->stk);
+      return;
+    }
+  }
+  fprintf(s->defout, "error: function '%s' not found\n", buf);
 }