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string2Int(): Return std::optional

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This commit is contained in:
Eelco Dolstra 2021-01-08 12:22:21 +01:00
parent 29a445840a
commit 6548b89cc4
17 changed files with 82 additions and 69 deletions
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13
src/libstore/store-api.cc
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@ -932,19 +932,20 @@ std::optional<ValidPathInfo> decodeValidPathInfo(const Store & store, std::istre
getline(str, s);
auto narHash = Hash::parseAny(s, htSHA256);
getline(str, s);
uint64_t narSize;
if (!string2Int(s, narSize)) throw Error("number expected");
hashGiven = { narHash, narSize };
auto narSize = string2Int<uint64_t>(s);
if (!narSize) throw Error("number expected");
hashGiven = { narHash, *narSize };
}
ValidPathInfo info(store.parseStorePath(path), hashGiven->first);
info.narSize = hashGiven->second;
std::string deriver;
getline(str, deriver);
if (deriver != "") info.deriver = store.parseStorePath(deriver);
string s; int n;
string s;
getline(str, s);
if (!string2Int(s, n)) throw Error("number expected");
while (n--) {
auto n = string2Int<int>(s);
if (!n) throw Error("number expected");
while ((*n)--) {
getline(str, s);
info.references.insert(store.parseStorePath(s));
}