forked from lix-project/lix
Merge pull request #7762 from yorickvP/boost-regex
Switch from std::regex to boost::regex
This commit is contained in:
Théophane Hufschmitt
GitHub
commit
d46230eff5
22
flake.nix
22
flake.nix
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@ -154,7 +154,7 @@
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configureFlags =
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lib.optionals stdenv.isLinux [
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"--with-boost=${boost}/lib"
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"--with-boost=${boost-nix}/lib"
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"--with-sandbox-shell=${sh}/bin/busybox"
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]
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++ lib.optionals (stdenv.isLinux && !(isStatic && stdenv.system == "aarch64-linux")) [
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@ -202,7 +202,7 @@
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version = libgit2.lastModifiedDate;
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cmakeFlags = (attrs.cmakeFlags or []) ++ ["-DUSE_SSH=exec"];
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}))
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boost
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boost-nix
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lowdown-nix
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libsodium
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]
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@ -423,14 +423,14 @@
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propagatedBuildInputs = propagatedDeps;
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disallowedReferences = [ boost ];
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disallowedReferences = [ boost-nix ];
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preConfigure = lib.optionalString (! currentStdenv.hostPlatform.isStatic)
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''
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# Copy libboost_context so we don't get all of Boost in our closure.
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# https://github.com/NixOS/nixpkgs/issues/45462
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mkdir -p $out/lib
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cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
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cp -pd ${boost-nix}/lib/{libboost_context*,libboost_thread*,libboost_system*,libboost_regex*} $out/lib
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rm -f $out/lib/*.a
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${lib.optionalString currentStdenv.hostPlatform.isLinux ''
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chmod u+w $out/lib/*.so.*
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@ -440,9 +440,9 @@
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for LIB in $out/lib/*.dylib; do
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chmod u+w $LIB
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install_name_tool -id $LIB $LIB
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install_name_tool -delete_rpath ${boost}/lib/ $LIB || true
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install_name_tool -delete_rpath ${boost-nix}/lib/ $LIB || true
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done
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install_name_tool -change ${boost}/lib/libboost_system.dylib $out/lib/libboost_system.dylib $out/lib/libboost_thread.dylib
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install_name_tool -change ${boost-nix}/lib/libboost_system.dylib $out/lib/libboost_system.dylib $out/lib/libboost_thread.dylib
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''}
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'';
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@ -470,9 +470,13 @@
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''}
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${lib.optionalString currentStdenv.isDarwin ''
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install_name_tool \
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-change ${boost}/lib/libboost_context.dylib \
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-change ${boost-nix}/lib/libboost_context.dylib \
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$out/lib/libboost_context.dylib \
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$out/lib/libnixutil.dylib
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install_name_tool \
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-change ${boost-nix}/lib/libboost_regex.dylib \
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$out/lib/libboost_regex.dylib \
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$out/lib/libnixexpr.dylib
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''}
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'';
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@ -495,6 +499,10 @@
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meta.mainProgram = "nix";
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});
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boost-nix = final.boost.override {
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enableIcu = false;
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};
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lowdown-nix = with final; currentStdenv.mkDerivation rec {
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name = "lowdown-0.9.0";
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@ -16,7 +16,7 @@ libexpr_CXXFLAGS += -I src/libutil -I src/libstore -I src/libfetchers -I src/lib
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libexpr_LIBS = libutil libstore libfetchers
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libexpr_LDFLAGS += -lboost_context -pthread
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libexpr_LDFLAGS += -lboost_context -lboost_regex -pthread
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ifdef HOST_LINUX
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libexpr_LDFLAGS += -ldl
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endif
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@ -16,6 +16,7 @@
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#include "primops.hh"
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#include <boost/container/small_vector.hpp>
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#include <boost/regex.hpp>
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#include <nlohmann/json.hpp>
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#include <sys/types.h>
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@ -24,7 +25,6 @@
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#include <algorithm>
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#include <cstring>
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#include <regex>
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#include <dlfcn.h>
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#include <cmath>
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@ -3885,19 +3885,30 @@ static RegisterPrimOp primop_convertHash({
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.fun = prim_convertHash,
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});
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// regex aliases, switch between boost and std
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using regex = boost::regex;
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using regex_error = boost::regex_error;
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using cmatch = boost::cmatch;
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using cregex_iterator = boost::cregex_iterator;
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namespace regex_constants = boost::regex_constants;
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// overloaded function alias
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constexpr auto regex_match = [] (auto &&...args) {
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return boost::regex_match(std::forward<decltype(args)>(args)...);
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};
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struct RegexCache
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{
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// TODO use C++20 transparent comparison when available
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std::unordered_map<std::string_view, std::regex> cache;
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std::unordered_map<std::string_view, regex> cache;
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std::list<std::string> keys;
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std::regex get(std::string_view re)
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regex get(std::string_view re)
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{
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auto it = cache.find(re);
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if (it != cache.end())
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return it->second;
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keys.emplace_back(re);
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return cache.emplace(keys.back(), std::regex(keys.back(), std::regex::extended)).first->second;
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return cache.emplace(keys.back(), regex(keys.back(), regex::extended)).first->second;
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}
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};
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@ -3917,8 +3928,8 @@ void prim_match(EvalState & state, const PosIdx pos, Value * * args, Value & v)
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NixStringContext context;
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const auto str = state.forceString(*args[1], context, pos, "while evaluating the second argument passed to builtins.match");
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std::cmatch match;
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if (!std::regex_match(str.begin(), str.end(), match, regex)) {
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cmatch match;
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if (!regex_match(str.begin(), str.end(), match, regex)) {
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v.mkNull();
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return;
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}
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@ -3933,8 +3944,8 @@ void prim_match(EvalState & state, const PosIdx pos, Value * * args, Value & v)
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(v.listElems()[i] = state.allocValue())->mkString(match[i + 1].str());
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}
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} catch (std::regex_error & e) {
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if (e.code() == std::regex_constants::error_space) {
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} catch (regex_error & e) {
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if (e.code() == regex_constants::error_space) {
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// limit is _GLIBCXX_REGEX_STATE_LIMIT for libstdc++
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state.debugThrowLastTrace(EvalError({
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.msg = hintfmt("memory limit exceeded by regular expression '%s'", re),
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@ -3997,8 +4008,8 @@ void prim_split(EvalState & state, const PosIdx pos, Value * * args, Value & v)
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NixStringContext context;
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const auto str = state.forceString(*args[1], context, pos, "while evaluating the second argument passed to builtins.split");
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auto begin = std::cregex_iterator(str.begin(), str.end(), regex);
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auto end = std::cregex_iterator();
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auto begin = cregex_iterator(str.begin(), str.end(), regex);
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auto end = cregex_iterator();
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// Any matches results are surrounded by non-matching results.
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const size_t len = std::distance(begin, end);
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@ -4037,8 +4048,8 @@ void prim_split(EvalState & state, const PosIdx pos, Value * * args, Value & v)
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assert(idx == 2 * len + 1);
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} catch (std::regex_error & e) {
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if (e.code() == std::regex_constants::error_space) {
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} catch (regex_error & e) {
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if (e.code() == regex_constants::error_space) {
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// limit is _GLIBCXX_REGEX_STATE_LIMIT for libstdc++
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state.debugThrowLastTrace(EvalError({
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.msg = hintfmt("memory limit exceeded by regular expression '%s'", re),
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