Reorganize minitar_attempt_read_entry

src/tar.c

@@ -7,7 +7,7 @@
 // all of these are defined in util.c
 int minitar_read_header(struct minitar*, struct tar_header*);
 int minitar_validate_header(const struct tar_header*);
-void minitar_parse_tar_header(const struct tar_header*, struct minitar_entry_metadata*);
+void minitar_parse_metadata_from_tar_header(const struct tar_header*, struct minitar_entry_metadata*);
 struct minitar_entry* minitar_dup_entry(const struct minitar_entry*);
 char* minitar_read_file_contents(struct minitar_entry_metadata*, struct minitar*);
 size_t minitar_get_size_in_blocks(size_t);
@@ -30,28 +30,22 @@ int minitar_close(struct minitar* mp)
 {
     int rc = fclose(mp->stream);
     free(mp);
-    if (rc) return rc;
-    return 0;
+    return rc;
 }
 
 static struct minitar_entry* minitar_attempt_read_entry(struct minitar* mp, int* valid)
 {
     struct minitar_entry entry;
     struct tar_header hdr;
-    if (!minitar_read_header(mp, &hdr))
-    {
-        *valid = 1; // we are at end-of-file
-        return NULL;
-    }
+    *valid = 1;
+    if (!minitar_read_header(mp, &hdr)) return NULL;
     if (!minitar_validate_header(&hdr))
     {
         *valid = 0;
         return NULL;
     }
-    *valid = 0;
     if (fgetpos(mp->stream, &entry.position)) return NULL;
-    *valid = 1;
-    minitar_parse_tar_header(&hdr, &entry.metadata);
+    minitar_parse_metadata_from_tar_header(&hdr, &entry.metadata);
     if (entry.metadata.size)
     {
         size_t size_in_blocks = minitar_get_size_in_blocks(entry.metadata.size);
@@ -70,7 +64,7 @@ struct minitar_entry* minitar_read_entry(struct minitar* mp)
     struct minitar_entry* result;
     do {
         result = minitar_attempt_read_entry(mp, &valid);
-    } while (!valid);
+    } while (!valid); // Skip over invalid entries
     return result;
 }
 

src/util.c

@@ -54,7 +54,7 @@ size_t minitar_get_size_in_blocks(size_t size)
     return minitar_is_block_aligned(size) ? size : minitar_align_down_to_block(size) + 512;
 }
 
-void minitar_parse_tar_header(const struct tar_header* hdr, struct minitar_entry_metadata* metadata)
+void minitar_parse_metadata_from_tar_header(const struct tar_header* hdr, struct minitar_entry_metadata* metadata)
 {
     if (!strlen(hdr->prefix))
     {