Add "--no-abs-symlink" to not store absolute paths

src/archiver.c

@@ -673,13 +673,17 @@ int write_files_fn(void *data, void *ud) {
     // Get absolute path.
     __attribute__((cleanup(free_malloced_memory))) void *abs_path =
         realpath(file_info->filename, NULL);
+    __attribute__((cleanup(free_malloced_memory))) void *rel_path = NULL;
     if (!abs_path) {
       fprintf(stderr,
               "WARNING: Failed to get absolute path of link destination!\n");
-    }
+      temp_to_write = malloc(sizeof(SDArchiverInternalToWrite));
-
+      temp_to_write->buf = malloc(2);
+      temp_to_write->size = 2;
+      memset(temp_to_write->buf, 0, 2);
+      simple_archiver_list_add(to_write, temp_to_write, free_internal_to_write);
+    } else {
       // Get relative path.
-    __attribute__((cleanup(free_malloced_memory))) void *rel_path = NULL;
       // First get absolute path of link.
       // Get abs path to dirname of link.
       unsigned int link_dir_path_len = strlen(file_info->filename) + 1;
@@ -750,7 +754,7 @@ int write_files_fn(void *data, void *ud) {
         } while (has_slash);
       }
 
-    if (abs_path) {
+      if ((state->parsed->flags & 0x20) == 0) {
         // Write absolute path length.
         u16 = strlen(abs_path);
         simple_archiver_helper_16_bit_be(&u16);
@@ -759,7 +763,8 @@ int write_files_fn(void *data, void *ud) {
         temp_to_write->buf = malloc(2);
         temp_to_write->size = 2;
         memcpy(temp_to_write->buf, &u16, 2);
-      simple_archiver_list_add(to_write, temp_to_write, free_internal_to_write);
+        simple_archiver_list_add(to_write, temp_to_write,
+                                 free_internal_to_write);
 
         // Write absolute path.
         simple_archiver_helper_16_bit_be(&u16);
@@ -767,13 +772,19 @@ int write_files_fn(void *data, void *ud) {
         temp_to_write->buf = malloc(u16 + 1);
         temp_to_write->size = u16 + 1;
         strncpy(temp_to_write->buf, abs_path, u16 + 1);
-      simple_archiver_list_add(to_write, temp_to_write, free_internal_to_write);
+        simple_archiver_list_add(to_write, temp_to_write,
+                                 free_internal_to_write);
       } else {
+        fprintf(stderr,
+                "NOTICE: Not saving absolute path since \"--no-abs-symlink\" "
+                "was specified.\n");
         temp_to_write = malloc(sizeof(SDArchiverInternalToWrite));
         temp_to_write->buf = malloc(2);
         temp_to_write->size = 2;
         memset(temp_to_write->buf, 0, 2);
-      simple_archiver_list_add(to_write, temp_to_write, free_internal_to_write);
+        simple_archiver_list_add(to_write, temp_to_write,
+                                 free_internal_to_write);
+      }
     }
 
     if (rel_path) {
@@ -803,7 +814,9 @@ int write_files_fn(void *data, void *ud) {
 
     // Write all previously set data.
     fprintf(stderr, "Writing symlink info: %s\n", file_info->filename);
+    if ((state->parsed->flags & 0x20) == 0) {
       fprintf(stderr, "  abs path: %s\n", (char *)abs_path);
+    }
     fprintf(stderr, "  rel path: %s\n", (char *)rel_path);
     simple_archiver_list_get(to_write, write_list_datas_fn, state->out_f);
     simple_archiver_list_free(&to_write);

src/parser.c

@@ -151,6 +151,8 @@ void simple_archiver_print_usage(void) {
           "file's stored decompressor\n");
   fprintf(stderr, "--overwrite-create : allows overwriting an archive file\n");
   fprintf(stderr, "--overwrite-extract : allows overwriting when extracting\n");
+  fprintf(stderr,
+          "--no-abs-symlink : do not store absolute paths for symlinks\n");
   fprintf(stderr,
           "-- : specifies remaining arguments are files to archive/extract\n");
   fprintf(
@@ -243,6 +245,8 @@ int simple_archiver_parse_args(int argc, const char **argv,
         out->flags |= 0x4;
       } else if (strcmp(argv[0], "--overwrite-extract") == 0) {
         out->flags |= 0x8;
+      } else if (strcmp(argv[0], "--no-abs-symlink") == 0) {
+        out->flags |= 0x20;
       } else if (argv[0][0] == '-' && argv[0][1] == '-' && argv[0][2] == 0) {
         is_remaining_args = 1;
       } else if (argv[0][0] != '-') {

src/parser.h

@@ -30,6 +30,7 @@ typedef struct SDArchiverParsed {
   /// 0b xxxx x1xx - Allow create archive overwrite.
   /// 0b xxxx 1xxx - Allow extract overwrite.
   /// 0b xxx1 xxxx - Create archive to stdout or read archive from stdin.
+  /// 0b xx1x xxxx - Do not save absolute paths for symlinks.
   unsigned int flags;
   /// Null-terminated string.
   char *filename;