From 0f3997d6ff2d25c0941824ec3daa3c8e767bd73e Mon Sep 17 00:00:00 2001
From: Aargh Rai <aargh.rai+git@gmail.com>
Date: Tue, 20 Oct 2026 11:20:15 +0530
Subject: wrote the entire thing using libgit2

---
 src/backup.c | 173 -----------------------------------------------------------
 1 file changed, 173 deletions(-)
 delete mode 100644 src/backup.c

(limited to 'src/backup.c')

diff --git a/src/backup.c b/src/backup.c
deleted file mode 100644
index 060777c..0000000
--- a/src/backup.c
+++ /dev/null
@@ -1,173 +0,0 @@
-#include "lib.h"
-#include <dirent.h>
-#include <regex.h>
-
-int check_path_type(const char* path) {
-    struct stat path_stat;
-    if (stat(path, &path_stat) != 0) {
-        return path_type_unknown;
-    }
-    if (S_ISDIR(path_stat.st_mode)) {
-      return path_type_directory;
-    }
-    return path_type_file;
-}
-
-int follows_ignore_rules(char* path, char* ignore_line) {
-  char lastbitofthepath[PATH_MAX];
-  int k = 0;
-  for (int i = 0; path[i] != 0; i++) {
-    if (path[i] == '/') {
-      lastbitofthepath[k] = 0;
-      k = 0;
-      continue;
-    }
-    lastbitofthepath[k++] = path[i];
-  }
-  if (k != 0 && lastbitofthepath[k] != 0) {
-    lastbitofthepath[k] = 0;
-  }
-
-  regex_t re;
-  int ret;
-
-  if (regcomp(&re, ignore_line, REG_EXTENDED) != 0) {
-      return 0;
-  }
-
-  ret = regexec(&re, lastbitofthepath, (size_t) 0, NULL, 0);
-  regfree(&re);
-
-  if (ret == 0) {
-      return 1;
-  } else {
-      return 0;
-  }
-}
-
-int should_ignore(char* path, char* ignore_instructions, int VERBOSE) {
-  int i = 0, k = 0;
-  char line[PATH_MAX];
-  while (ignore_instructions[i] != 0) {
-    if (ignore_instructions[i] != '\n') {
-      line[k++] = ignore_instructions[i];
-      i++;
-      continue;
-    }
-    line[k] = 0;
-    k = 0;
-    if (!follows_ignore_rules(path, line)) {
-      i++;
-      continue;
-    }
-    if (VERBOSE) {
-      printf("Ignoring %s due to ignore rule %s\n", path, line);
-    }
-    return 1;
-  }
-  return 0;
-}
-
-void copy_to_backup(char* source_path, int VERBOSE) {
-  char destination_path[PATH_MAX];
-  int index_of_first_slash = -1;
-  for (int i = 0; i < PATH_MAX; i++) {
-    if (source_path[i] != '/') continue;
-    index_of_first_slash = i;
-    break;
-  }
-
-  if (index_of_first_slash == -1) {
-    // I DON'T EVEN KNOW HOW TO HANDLE THIS
-    fprintf(stderr, "Weird path issue encountered, failed to copy to source\nPath encountered: %s", source_path);
-    return;
-  }
-
-  int i = 0;
-  for (; i < index_of_first_slash; i++) {
-    destination_path[i] = source_path[i];
-  }
-  destination_path[i++] = '.';
-  destination_path[i++] = 'b';
-  destination_path[i] = 'k';
-  while (++i < PATH_MAX) {
-    destination_path[i] = source_path[i - 3];
-  }
-
-  if (VERBOSE) {
-    printf("%s -> %s\n", source_path, destination_path);
-  }
-
-  verify_parent_dirs_exist(destination_path, VERBOSE);
-
-  char command[2 * PATH_MAX + 10];
-  snprintf(command, 2 * PATH_MAX + 10, "cp \"%s\" \"%s\"", source_path, destination_path);
-  system(command);
-  if (VERBOSE) {
-    printf("Executing: %s\n", command);
-  }
-}
-
-void push(char* directories, int cursor, const char* to_add) {
-  int i = 0;
-  for (; to_add[i] != 0; i++) {
-    directories[cursor * PATH_MAX + i] = to_add[i];
-  }
-  while (i < PATH_MAX) {
-    directories[cursor * PATH_MAX + i++] = 0;
-  }
-}
-
-void backup(char* target, char* ignore_instructions, int VERBOSE) {
-  int file_type = check_path_type(target);
-  if (file_type != path_type_directory) {
-    fprintf(stderr, "Input not a directory\n");
-    return;
-  }
-
-  int cursor = 0;
-  char* directories = malloc(PATH_MAX * PATH_MAX * sizeof(*directories));
-  push(directories, cursor, target);
-  while (cursor != -1) {
-    char* path = &directories[(cursor--) * PATH_MAX];
-    DIR* dir_ptr = opendir(path);
-    if (dir_ptr == NULL) {
-      fprintf(stderr, "Couldn't open the directory: %s\n", path);
-      continue;
-    }
-
-    struct dirent* entry_ptr;
-    char full_path[PATH_MAX];
-    int i = 0;
-    for (; path[i] != 0; i++) {
-      full_path[i] = path[i];
-    }
-    full_path[i++] = '/';
-    while ((entry_ptr = readdir(dir_ptr)) != NULL) {
-      if (
-        strcmp(entry_ptr->d_name, ".") == 0 ||
-        strcmp(entry_ptr->d_name, "..") == 0
-      ) continue;
-      int j = 0;
-      for (; entry_ptr->d_name[j] != 0; j++) {
-        full_path[i + j] = entry_ptr->d_name[j];
-      }
-      full_path[i + j] = 0;
-
-      if (VERBOSE) {
-        printf("Looking at: %s\n", full_path);
-      }
-      if (should_ignore(full_path, ignore_instructions, VERBOSE)) {
-        continue;
-      }
-
-      if (entry_ptr->d_type == DT_REG) {
-        copy_to_backup(full_path, VERBOSE);
-        continue;
-      }
-      push(directories, ++cursor, full_path);
-    }
-    closedir(dir_ptr);
-  }
-  free(directories);
-}
-- 
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