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Added some doc

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This commit is contained in:
Caleb Gardner
2025-05-21 21:38:05 -05:00
parent 213dfa8b92
commit af06021b1b
4 changed files with 80 additions and 25 deletions
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src/readers/data.zig
+10 -7
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@@ -19,7 +19,7 @@ pub const DataReader = struct {
rdr: FileOffsetReader,
block_size: u32,
sizes: []BlockSize,
frag_rdr: ?DataReader = null,
frag_data: ?[]u8 = null,
next_block_num: u32 = 0,
cur_bloc: []u8 = undefined,
@@ -60,8 +60,11 @@ pub const DataReader = struct {
errdefer out.deinit();
if (frag_idx != 0xFFFFFFFF) {
const frag_entry = try reader.frag_table.getValue(frag_idx);
out.frag_rdr = try .fromFragEntry(reader, frag_entry);
try out.frag_rdr.?.skip(frag_offset);
var frag_rdr = try .fromFragEntry(reader, frag_entry);
defer frag_rdr.deinit();
try frag_rdr.skip(frag_offset);
out.frag_data = try reader.alloc.alloc(u8, size % out.block_size);
_ = try frag_rdr.any().readAll(out.frag_data);
}
return out;
}
@@ -80,7 +83,7 @@ pub const DataReader = struct {
pub fn deinit(self: *DataReader) void {
self.alloc.free(self.sizes);
if (self.cur_bloc.len > 0) self.alloc.free(self.cur_bloc);
if (self.frag_rdr != null) self.frag_rdr.?.deinit();
if (self.frag_data != null) self.alloc.free(self.frag_data);
}
pub fn skip(self: *DataReader, offset: u32) !void {
@@ -101,9 +104,9 @@ pub const DataReader = struct {
}
const siz = self.sizes[self.next_block_num];
self.next_block_num += 1;
if (self.next_block_num == self.sizes.len - 1 and self.frag_rdr != null) {
try self.sizeBlock(self.sizes % self.block_size);
_ = try self.frag_rdr.?.readAll(self.cur_bloc);
if (self.next_block_num == self.sizes.len - 1 and self.frag_data != null) {
try self.sizeBlock(self.frag_data.len);
@memcpy(self.cur_bloc, self.frag_data);
return;
}
if (siz.size == 0) {