osmarks/potatOS
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slightly faster invalidation via size tracking

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osmarks
2021-01-29 23:25:09 +00:00
parent e0781c1f94
commit 7424beaa2d
3 changed files with 16 additions and 7 deletions
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5
src/main.lua
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@@ -850,7 +850,8 @@ local function download_files(manifest_data, needed_files)
local x = h.readAll()
h.close()
local hexsha = hexize(sha256(x))
if manifest_data.files[file] ~= hexsha then error(("hash mismatch on %s %s (expected %s, got %s)"):format(file, url, manifest_data.files[file], hexsha)) end
if (manifest_data.sizes and manifest_data.sizes[file] and manifest_data.sizes[file] ~= #x) or manifest_data.files[file] ~= hexsha then
error(("hash mismatch on %s %s (expected %s, got %s)"):format(file, url, manifest_data.files[file], hexsha)) end
fwrite(file, x)
count = count + 1
end)
@@ -911,7 +912,7 @@ local function process_manifest(url, force)
for file, hash in pairs(data.files) do
if fs.isDir(file) then fs.delete(file) end
if not fs.exists(file) then print("missing", file) add_log("nonexistent %s", file) table.insert(needs, file)
elseif hexize(sha256(fread(file))) ~= hash then
elseif (data.sizes and data.sizes[file] and data.sizes[file] ~= fs.getSize(file)) or hexize(sha256(fread(file))) ~= hash then
add_log("mismatch %s %s", file, hash)
print("mismatch on", file, hash)
table.insert(needs, file)