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authorAllen Byrne <50328838+byrnHDF@users.noreply.github.com>2022-10-03 18:31:32 (GMT)
committerGitHub <noreply@github.com>2022-10-03 18:31:32 (GMT)
commitc114bd64b0662a010b0a9c502b921adfab00f1e6 (patch)
tree9bfe24cf7fa1618398e2a7e053483ff0c8043e51 /java/src/jni/h5jni.h
parent1fb83da21531da8e531234fa6ab810b7a90d7ee9 (diff)
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Fix mostly java warnings, and cpp cast (#2134)
Diffstat (limited to 'java/src/jni/h5jni.h')
-rw-r--r--java/src/jni/h5jni.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/java/src/jni/h5jni.h b/java/src/jni/h5jni.h
index 2c93846..5af5a91 100644
--- a/java/src/jni/h5jni.h
+++ b/java/src/jni/h5jni.h
@@ -257,6 +257,23 @@
do { \
(*envptr)->ReleaseStringUTFChars(envptr, pinnedString, stringToRelease); \
} while (0)
+/*
+ * Above String macros may be incorrect, suggested code for getting a cstr from java
+ * int jstr_to_cstr(JNIEnv *jenv, jstring j_str, char *c_str, size_t cstr_len)
+ * {
+ * int32_t j_len, c_len;
+ *
+ * c_len = (*jenv)->GetStringUTFLength(jenv, j_str);
+ * if (c_len > (int32_t)cstr_len)
+ * return -ENAMETOOLONG;
+ * j_len = (*jenv)->GetStringLength(jenv, j_str);
+ * (*jenv)->GetStringUTFRegion(jenv, j_str, 0, j_len, c_str);
+ * if ((*jenv)->ExceptionCheck(jenv))
+ * return -EIO;
+ * return 0;
+ * }
+ *
+ */
#ifdef __cplusplus
extern "C" {