extract gamedata into a separate file.

src/bind_storage.c

@@ -35,7 +35,7 @@ static int tolua_storage_create(lua_State * L)
     const char *type = tolua_tostring(L, 2, "rb");
     gamedata *data;
 
-    data = gamedata_open(filename, type);
+    data = gamedata_open(filename, type, RELEASE_VERSION);
     if (data) {
         tolua_pushusertype(L, (void *)data, TOLUA_CAST "storage");
         return 1;

src/kernel/save.c

@@ -60,6 +60,7 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include <util/event.h>
 #include <util/filereader.h>
 #include <util/goodies.h>
+#include <util/gamedata.h>
 #include <util/language.h>
 #include <util/lists.h>
 #include <util/log.h>
@@ -1954,51 +1955,6 @@ int writegame(const char *filename)
     return 0;
 }
 
-void gamedata_close(gamedata *data) {
-    binstore_done(data->store);
-    fstream_done(&data->strm);
-}
-
-gamedata *gamedata_open(const char *filename, const char *mode) {
-    FILE *F = fopen(filename, mode);
-
-    if (F) {
-        gamedata *data = (gamedata *)calloc(1, sizeof(gamedata));
-        storage *store = (storage *)calloc(1, sizeof(storage));
-        int err = 0;
-        size_t sz;
-
-        data->store = store;
-        if (strchr(mode, 'r')) {
-            sz = fread(&data->version, 1, sizeof(int), F);
-            if (sz != sizeof(int)) {
-                err = ferror(F);
-            }
-            else {
-                err = fseek(F, sizeof(int), SEEK_CUR);
-            }
-        }
-        else if (strchr(mode, 'w')) {
-            int n = STREAM_VERSION;
-            data->version = RELEASE_VERSION;
-            fwrite(&data->version, sizeof(int), 1, F);
-            fwrite(&n, sizeof(int), 1, F);
-        }
-        if (err) {
-            fclose(F);
-            free(data);
-            free(store);
-        }
-        else {
-            fstream_init(&data->strm, F);
-            binstore_init(store, &data->strm);
-            return data;
-        }
-    }
-    log_error("could not open %s: %s", filename, strerror(errno));
-    return 0;
-}
-
 int a_readint(attrib * a, void *owner, struct storage *store)
 {
     /*  assert(sizeof(int)==sizeof(a->data)); */

src/kernel/save.h

@@ -20,6 +20,7 @@ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #define H_KRNL_SAVE
 
 #include <stream.h>
+#include <util/gamedata.h> // FIXME: eliminate include dependency from this file
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -31,13 +32,6 @@ extern "C" {
     struct spellbook;
     struct unit;
 
-    typedef struct gamedata {
-        struct storage *store;
-        stream strm;
-        int version;
-        int encoding;
-    } gamedata;
-
 #define MAX_INPUT_SIZE	DISPLAYSIZE*2
     /* Nach MAX_INPUT_SIZE brechen wir das Einlesen der Zeile ab und nehmen an,
      * dass hier ein Fehler (fehlende ") vorliegt */
@@ -83,9 +77,6 @@ extern "C" {
 
     void create_backup(char *file);
 
-    struct gamedata *gamedata_open(const char *filename, const char *mode);
-    void gamedata_close(struct gamedata *data);
-
     /* test-only functions that give access to internal implementation details (BAD) */
     void _test_write_password(struct gamedata *data, const struct faction *f);
     void _test_read_password(struct gamedata *data, struct faction *f);

src/kernel/save.test.c

@@ -1,6 +1,7 @@
 #include <platform.h>
 #include <kernel/config.h>
 #include <util/attrib.h>
+#include <util/gamedata.h>
 #include <attributes/key.h>
 
 #include "save.h"
@@ -43,7 +44,7 @@ static void test_readwrite_unit(CuTest * tc)
 {
     const char *filename = "test.dat";
     char path[MAX_PATH];
-    gamedata *data;
+    gamedata data;
     struct unit *u;
     struct region *r;
     struct faction *f;
@@ -58,20 +59,16 @@ static void test_readwrite_unit(CuTest * tc)
     u = test_create_unit(f, r);
     join_path(datapath(), filename, path, sizeof(path));
 
-    data = gamedata_open(path, "wb");
-    CuAssertPtrNotNull(tc, data); // TODO: intermittent test (even after the 'b' fix!)
-
-    write_unit(data, u);
-    gamedata_close(data);
+    CuAssertIntEquals(tc, 0, gamedata_openfile(&data, path, "wb", RELEASE_VERSION)); // TODO: intermittent test (even after the 'b' fix!)
+    write_unit(&data, u);
+    gamedata_close(&data);
     
     free_gamedata();
     f = test_create_faction(0);
     renumber_faction(f, fno);
-    data = gamedata_open(path, "rb");
-    CuAssertPtrNotNull(tc, data);
-
-    u = read_unit(data);
-    gamedata_close(data);
+    CuAssertIntEquals(tc, 0, gamedata_openfile(&data, path, "rb", RELEASE_VERSION)); // TODO: intermittent test (even after the 'b' fix!)
+    u = read_unit(&data);
+    gamedata_close(&data);
 
     CuAssertPtrNotNull(tc, u);
     CuAssertPtrEquals(tc, f, u->faction);
@@ -86,7 +83,7 @@ static void test_readwrite_attrib(CuTest *tc) {
     const char *path = "attrib.dat";
     test_cleanup();
     global.data_version = RELEASE_VERSION; // FIXME: hack!
-    data = gamedata_open(path, "wb");
+    data = gamedata_open(path, "wb", RELEASE_VERSION);
     CuAssertPtrNotNull(tc, data);
     key_set(&a, 41);
     key_set(&a, 42);
@@ -95,7 +92,7 @@ static void test_readwrite_attrib(CuTest *tc) {
     a_removeall(&a, NULL);
     CuAssertPtrEquals(tc, 0, a);
 
-    data = gamedata_open(path, "rb");
+    data = gamedata_open(path, "rb", RELEASE_VERSION);
     CuAssertPtrNotNull(tc, data);
     read_attribs(data->store, &a, NULL);
     gamedata_close(data);
@@ -237,11 +234,11 @@ static void test_read_password(CuTest *tc) {
     faction *f;
     f = test_create_faction(0);
     faction_setpassword(f, password_encode("secret", PASSWORD_DEFAULT));
-    data = gamedata_open(path, "wb");
+    data = gamedata_open(path, "wb", RELEASE_VERSION);
     CuAssertPtrNotNull(tc, data);
     _test_write_password(data, f);
     gamedata_close(data);
-    data = gamedata_open(path, "rb");
+    data = gamedata_open(path, "rb", RELEASE_VERSION);
     CuAssertPtrNotNull(tc, data);
     _test_read_password(data, f);
     gamedata_close(data);
@@ -259,12 +256,12 @@ static void test_read_password_external(CuTest *tc) {
     f = test_create_faction(0);
     faction_setpassword(f, password_encode("secret", PASSWORD_DEFAULT));
     CuAssertPtrNotNull(tc, f->_password);
-    data = gamedata_open(path, "wb");
+    data = gamedata_open(path, "wb", RELEASE_VERSION);
     CuAssertPtrNotNull(tc, data);
     WRITE_TOK(data->store, (const char *)f->_password);
     WRITE_TOK(data->store, (const char *)f->_password);
     gamedata_close(data);
-    data = gamedata_open(path, "rb");
+    data = gamedata_open(path, "rb", RELEASE_VERSION);
     CuAssertPtrNotNull(tc, data);
     data->version = BADCRYPT_VERSION;
     _test_read_password(data, f);

src/util/CMakeLists.txt

@@ -23,6 +23,7 @@ event.c
 filereader.c
 functions.c
 goodies.c
+gamedata.c
 language.c
 lists.c
 log.c

src/util/gamedata.c

@@ -0,0 +1,98 @@
+#include <platform.h>
+
+#include "gamedata.h"
+#include "log.h"
+
+#include <storage.h>
+#include <filestream.h>
+#include <memstream.h>
+#include <binarystore.h>
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+void gamedata_close(gamedata *data) {
+    binstore_done(data->store);
+    fstream_done(&data->strm);
+}
+
+void gamedata_init(gamedata *data, storage *store, int version) {
+    data->version = version;
+    data->store = store;
+    binstore_init(data->store, &data->strm);
+}
+
+int gamedata_openfile(gamedata *data, const char *filename, const char *mode, int version) {
+    FILE *F = fopen(filename, mode);
+    if (F) {
+        int err = 0;
+
+        if (strchr(mode, 'r')) {
+            size_t sz;
+            sz = fread(&version, 1, sizeof(int), F);
+            if (sz != sizeof(int)) {
+                err = ferror(F);
+            }
+            else {
+                err = fseek(F, sizeof(int), SEEK_CUR);
+            }
+        }
+        else if (strchr(mode, 'w')) {
+            int n = STREAM_VERSION;
+            fwrite(&version, sizeof(int), 1, F);
+            fwrite(&n, sizeof(int), 1, F);
+        }
+        if (err) {
+            fclose(F);
+            free(data);
+        }
+        else {
+            storage *store = malloc(sizeof(storage));
+            fstream_init(&data->strm, F);
+            gamedata_init(data, store, version);
+        }
+        return err;
+    }
+    return errno;
+}
+
+gamedata *gamedata_open(const char *filename, const char *mode, int version) {
+    FILE *F = fopen(filename, mode);
+
+    if (F) {
+        gamedata *data = (gamedata *)calloc(1, sizeof(gamedata));
+        storage *store = (storage *)calloc(1, sizeof(storage));
+        int err = 0;
+        size_t sz;
+
+        data->store = store;
+        if (strchr(mode, 'r')) {
+            sz = fread(&data->version, 1, sizeof(int), F);
+            if (sz != sizeof(int)) {
+                err = ferror(F);
+            }
+            else {
+                err = fseek(F, sizeof(int), SEEK_CUR);
+            }
+        }
+        else if (strchr(mode, 'w')) {
+            int n = STREAM_VERSION;
+            data->version = version;
+            fwrite(&data->version, sizeof(int), 1, F);
+            fwrite(&n, sizeof(int), 1, F);
+        }
+        if (err) {
+            fclose(F);
+            free(data);
+            free(store);
+        }
+        else {
+            fstream_init(&data->strm, F);
+            binstore_init(store, &data->strm);
+            return data;
+        }
+    }
+    log_error("could not open %s: %s", filename, strerror(errno));
+    return 0;
+}

src/util/gamedata.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#ifndef _GAMEDATA_H
+#define _GAMEDATA_H
+
+#include <stream.h>
+
+struct storage;
+
+typedef struct gamedata {
+    struct storage *store;
+    stream strm;
+    int version;
+    int encoding;
+} gamedata;
+
+void gamedata_close(struct gamedata *data);
+struct gamedata *gamedata_open(const char *filename, const char *mode, int version);
+int gamedata_openfile(gamedata *data, const char *filename, const char *mode, int version);
+
+#define STREAM_VERSION 2 /* internal encoding of binary files */
+
+#endif