alternate fix using the rest() function

src/cache_hash.cpp

@@ -337,22 +337,12 @@ Error cache_hit(CacheHash *ch, Buf *out_digest) {
             return ErrorInvalidFormat;
         }
 
-        // We should be at the last item,
-        // so switch from iterating on spaces ' ' to newlines '\n'
-        // First, check to make sure we have the runway to do so:
-        if (it.index == it.buffer.len) {
+        Slice<uint8_t> file_path = SplitIterator_rest(&it);
+        if (file_path.len == 0) {
             os_file_close(ch->manifest_file);
             return ErrorInvalidFormat;
         }
-        it.index++;
-        // Too close for missiles, I’m switching to guns
-        it.split_bytes = str("\n");
-        Optional<Slice<uint8_t>> opt_file_path = SplitIterator_next(&it);
-        if (!opt_file_path.is_some) {
-            os_file_close(ch->manifest_file);
-            return ErrorInvalidFormat;
-        }
-        Buf *this_path = buf_create_from_slice(opt_file_path.value);
+        Buf *this_path = buf_create_from_slice(file_path);
         if (chf->path != nullptr && !buf_eql_buf(this_path, chf->path)) {
             os_file_close(ch->manifest_file);
             return ErrorInvalidFormat;

src/util.cpp

@@ -78,6 +78,16 @@ Optional<Slice<uint8_t>> SplitIterator_next(SplitIterator *self) {
     return Optional<Slice<uint8_t>>::some(self->buffer.slice(start, end));
 }
 
+// Ported from std/mem.zig
+Slice<uint8_t> SplitIterator_rest(SplitIterator *self) {
+    // move to beginning of token
+    size_t index = self->index;
+    while (index < self->buffer.len && SplitIterator_isSplitByte(self, self->buffer.ptr[index])) {
+        index += 1;
+    }
+    return self->buffer.sliceFrom(index);
+}
+
 // Ported from std/mem.zig
 SplitIterator memSplit(Slice<uint8_t> buffer, Slice<uint8_t> split_bytes) {
     return SplitIterator{0, buffer, split_bytes};

src/util.hpp

@@ -263,7 +263,8 @@ struct SplitIterator {
 };
 
 bool SplitIterator_isSplitByte(SplitIterator *self, uint8_t byte);
-Optional<Slice<uint8_t>> SplitIterator_next(SplitIterator *self);
+Optional< Slice<uint8_t> > SplitIterator_next(SplitIterator *self);
+Slice<uint8_t> SplitIterator_rest(SplitIterator *self);
 SplitIterator memSplit(Slice<uint8_t> buffer, Slice<uint8_t> split_bytes);
 
 #endif