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[wpiutil] StringExtras: Add substr() (#3742)

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Unlike std::string and std::string_view, this substr() allows a start
greater than the length of the string, in which case an empty string
is returned.  This matches llvm::StringRef behavior.
This commit is contained in:
Peter Johnson
2021-11-27 21:31:40 -08:00
committed by GitHub
parent 6f51cb3b98
commit ae208d2b17
18 changed files with 118 additions and 77 deletions
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6
wpiutil/src/main/native/linux/MulticastServiceResolver.cpp
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@@ -6,6 +6,7 @@
#include "AvahiClient.h"
#include "wpi/SmallString.h"
#include "wpi/StringExtras.h"
#include "wpi/mutex.h"
using namespace wpi;
@@ -61,8 +62,9 @@ static void ResolveCallback(AvahiServiceResolver* r, AvahiIfIndex interface,
// Todo make this just do key
continue;
}
std::string_view key = value.substr(0, splitIndex);
value = value.substr(splitIndex + 1, value.size() - splitIndex - 1);
std::string_view key = wpi::substr(value, 0, splitIndex);
value =
wpi::substr(value, splitIndex + 1, value.size() - splitIndex - 1);
data.txt.emplace_back(std::pair<std::string, std::string>{key, value});
}
wpi::SmallString<256> outputHostName;