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replace own regex class with std::regex

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This commit is contained in:
Alexander Ried 2016-10-18 20:21:21 +02:00
parent ae8884b949
commit b05b98df75
5 changed files with 14 additions and 94 deletions
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21
src/libexpr/primops.cc
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@ -18,6 +18,7 @@
#include <algorithm>
#include <cstring>
#include <regex>
#include <dlfcn.h>
@ -1618,25 +1619,23 @@ static void prim_hashString(EvalState & state, const Pos & pos, Value * * args,
‘null’ or a list containing substring matches. */
static void prim_match(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
Regex regex(state.forceStringNoCtx(*args[0], pos), true);
std::regex regex(state.forceStringNoCtx(*args[0], pos), std::regex::extended);
PathSet context;
string s = state.forceString(*args[1], context, pos);
const std::string str = state.forceString(*args[1], context, pos);
Regex::Subs subs;
if (!regex.matches(s, subs)) {
std::smatch match;
if (!std::regex_match(str, match, regex)) {
mkNull(v);
return;
}
unsigned int len = subs.empty() ? 0 : subs.rbegin()->first + 1;
// the first match is the whole string
const size_t len = match.size() - 1;
state.mkList(v, len);
for (unsigned int n = 0; n < len; ++n) {
auto i = subs.find(n);
if (i == subs.end())
mkNull(*(v.listElems()[n] = state.allocValue()));
else
mkString(*(v.listElems()[n] = state.allocValue()), i->second);
for (size_t i = 0; i < len; ++i) {
mkString(*(v.listElems()[i] = state.allocValue()), match[i + 1].str().c_str());
}
}