1 files changed, 73 insertions, 0 deletions
diff --git a/src/helper.c b/src/helper.c
index d52fa5f..3b02c81 100644
--- a/src/helper.c
+++ b/src/helper.c
@@ -1,3 +1,4 @@
+#include <stdio.h>
 #include "helper.h"
 #include "big_endian.h"
 
@@ -82,3 +83,75 @@ print_node(struct CForest *forest, uint64_t node)
 
   print_forest_node(forest, node_ptr);
 }
+
+void print_forest_file(char *filename, char *output_filename)
+{
+  unsigned char error_vec_len[8] = { 0 };
+  unsigned char error_vec_cap[8] = { 0 };
+
+  struct SignedVec error_vec = { 0 };
+
+  error_vec.len = error_vec_len;
+  error_vec.capacity = error_vec_cap;
+
+  /* Now read the file into bytes and pack inside a struct UnsignedVec
+     and pass to the function. */
+
+  FILE *file = fopen(filename, "r");
+
+  if (file == NULL) {
+    fprintf(stderr, "Cannot open file %s\n", filename);
+
+    return;
+  }
+
+  fseek(file, 0, SEEK_END);
+
+  uint64_t file_size = ftell(file);
+
+  fseek(file, 0, SEEK_SET);
+
+  unsigned char *file_buffer = malloc(sizeof(unsigned char) * file_size);
+
+  if (file_buffer == NULL) {
+    fprintf(stderr, "%s:%d: Cannot allocate %llu memory\n",
+            __FILE__, __LINE__,
+            file_size);
+
+    return;
+  }
+
+  fread(file_buffer, 1, file_size, file);
+
+  fclose(file);
+
+  printf("file size = %llu\n", file_size);
+
+  unsigned char forest_len[8] = { 0 };
+
+  struct UnsignedVec forest = { 0 };
+
+  forest.len = forest_len;
+
+  to_big_endian(file_size, forest.len);
+
+  forest.data = file_buffer;
+
+  print_forest(&forest, &error_vec, output_filename);
+
+  uint64_t error_len = from_big_endian(error_vec.len);
+
+  if (error_len) {
+    fprintf(stderr, "error: ");
+
+    for (uint64_t i = 0; i < error_len; i++) {
+      fprintf(stderr, "%c", *(error_vec.data+i));
+    }
+
+    fprintf(stderr, "\n");
+
+    clean_signed(&error_vec, 4);
+  }
+
+  free(file_buffer);
+}