1 files changed, 60 insertions, 0 deletions
diff --git a/lib/buffer.c b/lib/buffer.c
new file mode 100644
index 0000000..2bee94b
--- /dev/null
+++ b/lib/buffer.c
@@ -0,0 +1,60 @@
+#include "buffer.h"
+#include "convert.h"
+
+#include <limits.h>
+#include <string.h>
+
+static int push_path_buffer_b(char* buf, int* index, const char* string) {
+    int save, string_len;
+
+    save = *index;
+    if (*index > 1 || (*index == 1 && buf[0] != '/')) {
+        buf[(*index)++] = '/';
+    }
+
+    string_len = strlen(string);
+    memcpy(buf + *index, string, string_len + 1);
+    
+    *index += string_len;
+    
+    return save;
+}
+
+static void pop_path_buffer_b(char* buf, int* index, int i) {
+    *index = i;
+    buf[*index] = '\0';
+}
+
+static char path_buffer[PATH_MAX + 1];
+static int path_buffer_index = 0;
+
+char* get_path_buffer(void) {
+    return path_buffer;
+}
+
+int push_path_buffer(const char* string) {
+    return push_path_buffer_b(path_buffer, &path_buffer_index, string);
+}
+
+void pop_path_buffer(int i) {
+    pop_path_buffer_b(path_buffer, &path_buffer_index, i);
+}
+
+static char path_buffer_2[PATH_MAX + 1];
+static int path_buffer_index_2 = 0;
+
+char* get_path_buffer_2(void) {
+    return path_buffer_2;
+}
+
+int push_path_buffer_2(const char* string) {
+    return push_path_buffer_b(path_buffer_2, &path_buffer_index_2, string);
+}
+
+void pop_path_buffer_2(int i) {
+    pop_path_buffer_b(path_buffer_2, &path_buffer_index_2, i);
+}
+
+bool is_dot_dir(const char* path) {
+    return streql(path, ".") || streql(path, "..");
+}