eliminate unused callback module.

what was I thinking when I wrote this?

src/CMakeLists.txt

@@ -99,7 +99,6 @@ set (ERESSEA_SRC
   prefix.c
   donations.c
   eressea.c
-  callback.c
   direction.c
   keyword.c
   skill.c
@@ -205,7 +204,6 @@ set(TESTS_SRC
   report.test.c
   summary.test.c
   travelthru.test.c
-  callback.test.c
   direction.test.c
   economy.test.c
   json.test.c

src/callback.c

@@ -1,61 +0,0 @@
-#include <platform.h>
-#include "callback.h"
-#include <stdlib.h>
-#include <string.h>
-
-static struct reg {
-    struct reg * next;
-    HCALLBACK cb;
-    char *name;
-} *registry;
-
-HCALLBACK create_callback(void(*cbv)(va_list va)) {
-    HCALLBACK cb;
-    cb.cbv = cbv;
-    return cb;
-}
-
-void reset_callbacks(void) {
-    while (registry) {
-        struct reg *r = registry;
-        registry = r->next;
-        free(r->name);
-        free(r);
-    }
-    registry = 0;
-}
-
-HCALLBACK register_callback(const char *name, void(*cbv)(va_list va))
-{
-    struct reg * r = (struct reg *)malloc(sizeof(struct reg));
-    r->next = registry;
-    r->name = _strdup(name);
-    r->cb.cbv = cbv;
-    registry = r;
-    return r->cb;
-}
-
-int find_callback(const char *name, HCALLBACK *result) {
-    if (result && name) {
-        struct reg *r;
-        for (r = registry; r; r = r->next) {
-            if (strcmp(r->name, name) == 0) {
-                *result = r->cb;
-                return 0;
-            }
-        }
-    }
-    return -1;
-}
-
-int call_callback(HCALLBACK cb, const char *name, ...) {
-    va_list ap;
-    if (name) {
-        int err = find_callback(name, &cb);
-        if (err) return err;
-    }
-    va_start(ap, name);
-    cb.cbv(ap);
-    va_end(ap);
-    return 0;
-}

src/callback.h

@@ -1,16 +0,0 @@
-#ifndef H_CALLBACK_H
-#define H_CALLBACK_H
-
-#include <stdarg.h>
-
-typedef struct {
-    void(*cbv)(va_list va);
-} HCALLBACK;
-
-HCALLBACK register_callback(const char *name, void(*cbv)(va_list va));
-HCALLBACK create_callback(void(*cbv)(va_list va));
-int find_callback(const char *name, HCALLBACK *result);
-int call_callback(HCALLBACK cb, const char *name, ...);
-void reset_callbacks(void);
-
-#endif

src/callback.test.c

@@ -1,51 +0,0 @@
-#include "callback.h"
-#include <stdlib.h>
-#include <CuTest.h>
-
-void callback(va_list ap) {
-    int i = (int)va_arg(ap, int);
-    int *p = va_arg(ap, int *);
-    *p += i;
-}
-
-static void test_find_callback(CuTest *tc) {
-    HCALLBACK cb;
-    reset_callbacks();
-    CuAssertIntEquals(tc, -1, find_callback("test", &cb));
-    cb = register_callback("test", callback);
-    CuAssertIntEquals(tc, 0, find_callback("test", &cb));
-    reset_callbacks();
-}
-
-static void test_call_by_handle(CuTest *tc) {
-    HCALLBACK cb;
-    int x = 0;
-    reset_callbacks();
-    cb = create_callback(callback);
-    CuAssertIntEquals(tc, 0, call_callback(cb, 0, 42, &x));
-    CuAssertIntEquals(tc, 42, x);
-    reset_callbacks();
-}
-
-static void test_call_by_name(CuTest *tc) {
-    HCALLBACK cb = { 0 };
-    HCALLBACK ca = { 0 };
-    int x = 0;
-    reset_callbacks();
-    CuAssertIntEquals(tc, -1, call_callback(cb, "test", 42, &x));
-    cb = register_callback("test", callback);
-    CuAssertIntEquals(tc, 0, call_callback(cb, "test", 42, &x));
-    CuAssertIntEquals(tc, 42, x);
-    CuAssertIntEquals(tc, 0, call_callback(ca, "test", 42, &x));
-    CuAssertIntEquals(tc, 84, x);
-    reset_callbacks();
-}
-
-CuSuite *get_callback_suite(void)
-{
-    CuSuite *suite = CuSuiteNew();
-    SUITE_ADD_TEST(suite, test_find_callback);
-    SUITE_ADD_TEST(suite, test_call_by_name);
-    SUITE_ADD_TEST(suite, test_call_by_handle);
-    return suite;
-}

src/test_eressea.c

@@ -60,7 +60,6 @@ int RunAllTests(int argc, char *argv[])
 {
     /* self-test */
     ADD_SUITE(tests);
-    ADD_SUITE(callback);
     ADD_SUITE(json);
     ADD_SUITE(jsonconf);
     ADD_SUITE(direction);