Major changes to api and structure.

- Remove newline caching
- limit petal sizes
- make public facing api use points only
- fix iterators (chunk & line)

include/vase/iterators/chunk.h

@@ -8,11 +8,14 @@ struct ChunkIterator {
   std::vector<Shard *> stack;
   Petal *petal = nullptr;
   uint32_t petal_offset = 0;
+  uint32_t global_offset;
 
-  ChunkIterator(Shard *r, uint32_t offset = 0);
+  ChunkIterator(Shard *r);
 
   ~ChunkIterator();
 
-  void seek(uint32_t offset);
+  void seek_offset(uint32_t offset);
+  void seek_line(uint32_t offset);
   bool next(const char **data, uint32_t *out_len);
+  uint32_t byte_offset();
 };

include/vase/iterators/line.h

@@ -5,16 +5,17 @@
 #include "pch.h"
 
 struct LineIterator {
-  uint32_t offset;
   ChunkIterator it;
 
   const char *cursor = nullptr;
-  uint32_t remaining = 0;
   bool eof = false;
+  uint32_t remaining = 0;
+  uint32_t line_offset = 0;
 
   LineIterator(Shard *r, uint32_t start_line);
 
-  ~LineIterator();
+  ~LineIterator() = default;
 
   bool next(std::string &line);
+  uint32_t byte_offset();
 };