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, 25 insertions, 0 deletions

diff --git a/src/ft_strtrim.c b/src/ft_strtrim.c
new file mode 100644
index 0000000..e9fa3eb
--- /dev/null
+++ b/src/ft_strtrim.c
@@ -0,0 +1,25 @@
+#include "libft.h"
+#include <stdlib.h>
+
+char *
+ft_strtrim (char const *s1, char const *set)
+{
+  size_t start;
+  size_t end;
+  size_t len;
+  char *trimmed;
+
+  start = 0;
+  while (s1[start] && ft_strchr (set, s1[start]))
+    start++;
+  end = ft_strlen (s1);
+  while (end > start && ft_strchr (set, s1[end - 1]))
+    end--;
+  len = end - start;
+  trimmed = malloc (len + 1);
+  if (!trimmed)
+    return (NULL);
+  ft_memcpy (trimmed, s1 + start, len);
+  trimmed[len] = '\0';
+  return (trimmed);
+}