Implement libft Part 2 with tests

Add ft_substr, ft_strjoin, ft_strtrim, ft_split, ft_itoa,
ft_strmapi, ft_striteri, ft_putchar_fd, ft_putstr_fd,
ft_putendl_fd, ft_putnbr_fd.

1 files changed, 23 insertions, 0 deletions

diff --git a/src/ft_strmapi.c b/src/ft_strmapi.c
new file mode 100644
index 0000000..8d419c2
--- /dev/null
+++ b/src/ft_strmapi.c
@@ -0,0 +1,23 @@
+#include "libft.h"
+#include <stdlib.h>
+
+char *
+ft_strmapi (char const *s, char (*f) (unsigned int, char))
+{
+  size_t len;
+  char *result;
+  size_t i;
+
+  len = ft_strlen (s);
+  result = malloc (len + 1);
+  if (!result)
+    return (NULL);
+  i = 0;
+  while (i < len)
+    {
+      result[i] = f (i, s[i]);
+      i++;
+    }
+  result[len] = '\0';
+  return (result);
+}