Try 4, lol.

2025-07-09 06:42:02 -05:00
parent 60e183512b
commit 5c14b7db48
22 changed files with 331 additions and 1721 deletions
@@ -1,56 +0,0 @@
-const std = @import("std");
-
-const Reader = @import("reader.zig").Reader;
-const DecompressType = @import("decompress.zig").DecompressType;
-const FileHolder = @import("readers/file_holder.zig").FileHolder;
-const FileOffsetReader = @import("readers/file_holder.zig").FileOffsetReader;
-const MetadataReader = @import("readers/metadata.zig").MetadataReader;
-
-const TableError = error{InvalidIndex};
-
-/// A lazily read squashfs table.
-pub fn Table(
-    comptime T: type,
-) type {
-    return struct {
-        decomp: DecompressType,
-        table: []T = &[0]T{},
-        offset: u64,
-        item_count: u32,
-
-        pub fn init(read: *Reader, offset: u64, item_count: u32) Self {
-            return .{
-                .decomp = read.super.decomp,
-                .offset = offset,
-                .item_count = item_count,
-            };
-        }
-        pub fn deinit(self: *Self, alloc: std.mem.Allocator) void {
-            if (self.table.len != 0) alloc.free(self.table);
-        }
-
-        pub fn getValue(self: *Self, read: *Reader, i: u64) !T {
-            if (i >= self.item_count) return TableError.InvalidIndex;
-            if (self.table.len > i) return self.table[i];
-            var offset_rdr: FileOffsetReader = undefined;
-            var meta_rdr: MetadataReader = undefined;
-            var meta_buf: [8]u8 = [1]u8{0} ** 8;
-            const meta_offset = std.mem.bytesAsValue(u64, &meta_buf);
-            var to_read: u32 = 0;
-            while (self.table.len <= i) {
-                _ = try read.holder.file.preadAll(&meta_buf, self.offset);
-                self.offset += 8;
-                offset_rdr = read.holder.readerAt(meta_offset.*);
-                meta_rdr = .init(read.alloc, self.decomp, offset_rdr.any());
-                defer meta_rdr.deinit();
-                to_read = @min(self.item_count - self.table.len, comptime 8192 / @sizeOf(T));
-                const alloc_size = self.table.len + to_read;
-                if (self.table.len != 0) read.alloc.free(self.table);
-                self.table = try read.alloc.alloc(T, alloc_size);
-                _ = try meta_rdr.any().readAll(@ptrCast(self.table[self.table.len - to_read ..]));
-            }
-            return self.table[i];
-        }
-        const Self: type = @This();
-    };
-}