1 files changed, 124 insertions, 0 deletions
diff --git a/libgamma_LibgammaException.c b/libgamma_LibgammaException.c
new file mode 100644
index 0000000..52d19d7
--- /dev/null
+++ b/libgamma_LibgammaException.c
@@ -0,0 +1,124 @@
+/* See LICENSE file for copyright and license details. */
+#include "libgamma_LibgammaException.h"
+#include <stdlib.h>
+#include <string.h>
+
+#include <libgamma.h>
+
+
+/**
+ * Returns the name of the definition associated with
+ * a <tt>libgamma</tt> error code
+ * 
+ * @param   value  The error code
+ * @return         The name of the definition associated with the error code,
+ *                 {@code null} if the error code does not exist
+ */
+jstring
+Java_libgamma_LibgammaException_name_1of_1error(JNIEnv *env, jclass class, jint value)
+{
+	/* It is really unlikely that `malloc` returns `NULL` here
+	 * and error handing makes this unnecessarily comples,
+	 * therefore we will simply skip it */
+  
+	const char *do_not_free_this = libgamma_name_of_error(value);
+	char *this_will_be_freed;
+	size_t n;
+	if (!do_not_free_this)
+		return NULL;
+
+	n = strlen(do_not_free_this) + 1;
+	this_will_be_freed = malloc(n * sizeof(char));
+	memcpy(this_will_be_freed, do_not_free_this, n * sizeof(char));
+
+	return (*env)->NewStringUTF(env, this_will_be_freed);
+	(void) class;
+}
+
+/**
+ * Return the value of a <tt>libgamma</tt> error definition
+ * refered to by name
+ * 
+ * @param   name  The name of the definition associated with the error code
+ * @return        The error code, zero if the name is {@code null}
+ *                or does not refer to a <tt>libgamma</tt> error
+ */
+jint
+Java_libgamma_LibgammaException_value_1of_1error(JNIEnv *env, jclass class, jstring name)
+{
+	const char *name_chars;
+	int rc;
+	if (!name)
+		return 0;
+	name_chars = (*env)->GetStringUTFChars(env, name, NULL);
+	rc = libgamma_value_of_error(name_chars);
+	(*env)->ReleaseStringUTFChars(env, name, name_chars);
+	return rc;
+	(void) class;
+}
+
+/**
+ * Acquire the value that should go to {@link #group_gid}
+ * 
+ * @return  The value that should go to {@link #group_gid}
+ */
+jint
+Java_libgamma_LibgammaException_libgamma_1group_1gid(JNIEnv *env, jclass class)
+{
+	return libgamma_group_gid;
+	(void) env;
+	(void) class;
+}
+
+/**
+ * Acquire the value that should go to {@link #group_name}
+ * 
+ * @return  The value that should go to {@link #group_name}
+ */
+jstring
+Java_libgamma_LibgammaException_libgamma_1group_1name(JNIEnv *env, jclass class)
+{
+	/* It is really unlikely that `malloc` returns `NULL` here
+	 * and error handing makes this unnecessarily comples,
+	 * therefore we will simply skip it */
+
+	const char *do_not_free_this = libgamma_group_name;
+	char *this_will_be_freed;
+	size_t n;
+	if (!do_not_free_this)
+		return NULL;
+
+	n = strlen(do_not_free_this) + 1;
+	this_will_be_freed = malloc(n * sizeof(char));
+	memcpy(this_will_be_freed, do_not_free_this, n * sizeof(char));
+
+	return (*env)->NewStringUTF(env, this_will_be_freed);
+	(void) class;
+}
+
+/**
+ * Get a textual description of a system error code
+ * 
+ * @param   error_code  The error code
+ * @return              A textual description of the error code
+ */
+jstring
+Java_libgamma_LibgammaException_strerror(JNIEnv *env, jclass class, jint error_code)
+{
+	/* It is really unlikely that `malloc` returns `NULL` here
+	 * and error handing makes this unnecessarily comples,
+	 * therefore we will simply skip it */
+
+	const char *do_not_free_this = strerror(error_code);
+	char *this_will_be_freed;
+	size_t n;
+	if (!do_not_free_this)
+		return NULL;
+
+	n = strlen(do_not_free_this) + 1;
+	this_will_be_freed = malloc(n * sizeof(char));
+	memcpy(this_will_be_freed, do_not_free_this, n * sizeof(char));
+
+	return (*env)->NewStringUTF(env, this_will_be_freed);
+	(void) class;
+}