basic backup system, which utlizies regex for ignore files

1 files changed, 66 insertions, 0 deletions

diff --git a/src/ignore.c b/src/ignore.c
new file mode 100644
index 0000000..fbfb8ed
--- /dev/null
+++ b/src/ignore.c
@@ -0,0 +1,66 @@
+#include "lib.h"
+
+int _;
+
+void mkdir_if_not_exist(char* path, int VERBOSE) {
+  if (mkdir(path, S_IRWXU) < 0) return;
+  if (VERBOSE) {
+    printf("(Created to create directory %s)", path);
+  }
+}
+
+void verify_parent_dirs_exist(char* file_path, int VERBOSE) {
+  for (int i = 0; file_path[i] != 0; i++) {
+    if (file_path[i] == '/') file_path[i] = 0;
+    if (file_path[i] != 0) continue;
+    mkdir_if_not_exist(file_path, VERBOSE);
+    file_path[i] = '/';
+  }
+}
+
+char* get_ignore_file(char* ignore_file, int VERBOSE) {
+  verify_parent_dirs_exist(ignore_file, VERBOSE);
+  FILE* file = fopen(ignore_file, "r");
+  char* default_config;
+
+  if (file != 0) {
+    float current_pointer = ftell(file);
+    fseek(file, 0, SEEK_END);
+    long int file_size = ftell(file);
+    fseek(file, current_pointer, SEEK_SET);
+
+    char* contents = malloc(file_size * sizeof(*contents));
+    _ = fread(contents, 1, file_size, file);
+    fclose(file);
+    
+    return contents;
+  }
+
+  if (strcmp(ignore_file, (default_config = get_default_config())) != 0) {
+    return NULL;
+  }
+
+  // mainly used for first time running
+  if (default_config == NULL) {
+    return NULL;
+  }
+
+  file = fopen(default_config, "w");
+  if (file == 0) {
+    return NULL;
+  }
+
+  int content_length = strlen(DEFAULT_CONFIG_CONTENTS);
+  _ = fwrite(DEFAULT_CONFIG_CONTENTS, 1, content_length, file);
+  fclose(file);
+  if (VERBOSE) {
+    printf("Creating %s\n", default_config);
+  }
+
+  char* contents = malloc(content_length * sizeof(char));
+  for (int i = 0; i < content_length; i++) {
+    contents[i] = DEFAULT_CONFIG_CONTENTS[i];
+  }
+  return contents;
+}
+