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java/String: add method ToString()

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Max Kellermann
2019-04-24 13:55:15 +02:00
parent 0d2ec5ead2
commit 61b2ae0f7c
2 changed files with 28 additions and 2 deletions
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20
src/java/String.cxx
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@@ -1,5 +1,5 @@
/*
* Copyright 2010-2018 Max Kellermann <max.kellermann@gmail.com>
* Copyright 2010-2019 Max Kellermann <max.kellermann@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -29,6 +29,7 @@
#include "String.hxx"
#include "util/TruncateString.hxx"
#include "util/ScopeExit.hxx"
char *
Java::String::CopyTo(JNIEnv *env, jstring value,
@@ -42,3 +43,20 @@ Java::String::CopyTo(JNIEnv *env, jstring value,
env->ReleaseStringUTFChars(value, p);
return result;
}
std::string
Java::String::ToString(JNIEnv *env, jstring s) noexcept
{
assert(env != nullptr);
assert(s != nullptr);
const char *p = env->GetStringUTFChars(s, nullptr);
if (p == nullptr)
return std::string();
AtScopeExit(env, s, p) {
env->ReleaseStringUTFChars(s, p);
};
return std::string(p);
}