From f67f2c3d5b67f54dae2c2c2754f43b4351445c80 Mon Sep 17 00:00:00 2001
From: Anastasis Grammenos <anastasis.gramm2@gmail.com>
Date: Sun, 7 Oct 2018 20:00:43 +0300
Subject: add list_exists fucntion

---
 src/actionparser.c |  8 ++++----
 src/cklist.c       | 12 ++++++++++++
 src/cklist.h       |  3 +++
 unit/ck-test.c     | 17 ++++++++++++-----
 4 files changed, 31 insertions(+), 9 deletions(-)

diff --git a/src/actionparser.c b/src/actionparser.c
index 266f771..25c7c19 100644
--- a/src/actionparser.c
+++ b/src/actionparser.c
@@ -389,10 +389,10 @@ int parse_action(int argc, char* argv[], UserOpt *opt) {
 
   /* If the remaining arguments are < 2
    * print help and exit */
-  if (optNum - pos < 2) {
-    print_parser_help();
-    return -1;
-  }
+  /* if (optNum - pos < 2) { */
+  /*   print_parser_help(); */
+  /*   return -1; */
+  /* } */
 
   /* find the action */
   determine_action(opt);
diff --git a/src/cklist.c b/src/cklist.c
index 14d5d82..e142feb 100644
--- a/src/cklist.c
+++ b/src/cklist.c
@@ -186,6 +186,18 @@ void list_print_concat(cklist *ckl) {
   }
 }
 
+int list_exists(cklist *ckl, char *str) {
+  if (ckl->size > 0) {
+    list_rewind(ckl);
+    do {
+      if (strcmp(list_get(ckl), str) == 0) {
+        return 1;
+      }
+    } while (list_next(ckl));
+  }
+  return 0;
+}
+
 int list_size(cklist *ckl) {
   return ckl->size;
 }
diff --git a/src/cklist.h b/src/cklist.h
index 346e55f..95fd088 100644
--- a/src/cklist.h
+++ b/src/cklist.h
@@ -48,6 +48,9 @@ extern cklist* list_copy_until(cklist *ckl, int index);
  * copy from (>=) until (<) */
 extern cklist* list_copy_part(cklist *ckl, int from, int until);
 
+/* return 1 if str exists in the list, 0 otherwise */
+extern int list_exists(cklist *ckl, char *str);
+
 /* rewinds */
 extern void list_print_lisp(cklist *ckl);
 extern void list_print_python(cklist *ckl);
diff --git a/unit/ck-test.c b/unit/ck-test.c
index b907576..1264431 100644
--- a/unit/ck-test.c
+++ b/unit/ck-test.c
@@ -5,11 +5,11 @@
 #include "cklist.h"
 
 /* total number of unit tests */
-#define TOTAL 1
+#define TOTAL 2
 
-#define CK_UNIT_TESTS				\
-  X(ck_list_init, "Basic cklist test")
-  //  X(ck_list_add, "Add elements to ck list")
+#define CK_UNIT_TESTS                                   \
+  X(ck_list_init, "Basic cklist test")                  \
+  X(ck_list_exists, "Test list exists function")
 
 void ck_list_init() {
   cklist *ckl1 = list_make_new();
@@ -25,7 +25,14 @@ void ck_list_init() {
   list_free(ckl2);
 }
 
-void ck_list_add() {
+void ck_list_exists() {
+  cklist *ckl = list_make_new();
+  list_add(ckl, "first");
+  list_add(ckl, "second");
+  assert(list_exists(ckl, "first"));
+  assert(list_exists(ckl, "second"));
+  assert(!list_exists(ckl, "thrid"));
+  list_free(ckl);
 }
 
 int main() {
-- 
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