/**
* jlibgamma -- Display server abstraction layer for gamma ramp and Java
* Copyright (C) 2014 Mattias Andrée (maandree@member.fsf.org)
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "libgamma_LibgammaException.h"
#include <stdlib.h>
#include <string.h>
#include <libgamma.h>
#define J JNIEnv* env, jclass class
/**
* 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(J, 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 == NULL)
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(J, jstring name)
{
const char* name_chars;
int rc;
if (name == NULL)
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(J)
{
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(J)
{
/* 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 == NULL)
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(J, 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 == NULL)
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;
}
