continued: new argument type "items" or "resources" (previous solution didn't allow lists of resources, which come in handy for build-error messages).

src/common/gamecode/report.c

@@ -3172,23 +3172,23 @@ eval_order(struct opstack ** stack, const void * userdata) /* order -> string */
 }
 
 static void
-eval_items(struct opstack ** stack, const void * userdata) /* order -> string */
+eval_resources(struct opstack ** stack, const void * userdata) /* order -> string */
 {
   const faction * report = (const faction*)userdata;
-  const struct item * itm = (const struct item *)opop(stack).v;
+  const struct resource * res = (const struct resource *)opop(stack).v;
   static char buf[256];
   size_t len = sizeof(buf);
   variant var;
 
   char * edit = buf;
-  while (itm!=NULL && len > 4) {
+  while (res!=NULL && len > 4) {
-    const char * rname = resourcename(itm->type->rtype, (itm->number!=1)?NMF_PLURAL:0);
+    const char * rname = resourcename(res->type, (res->number!=1)?NMF_PLURAL:0);
-    int written = snprintf(edit, len, "%d %s", itm->number, LOC(report->locale, rname));
+    int written = snprintf(edit, len, "%d %s", res->number, LOC(report->locale, rname));
     len -= written;
     edit += written;
 
-    itm = itm->next;
+    res = res->next;
-    if (itm!=NULL && len>2) {
+    if (res!=NULL && len>2) {
       strcat(edit, ", ");
       edit += 2;
       len -= 2;
@@ -3259,7 +3259,7 @@ report_init(void)
 	add_function("int36", &eval_int36);
 	add_function("trail", &eval_trail);
   add_function("spell", &eval_spell);
-  add_function("items", &eval_items);
+  add_function("resources", &eval_resources);
 
   register_reporttype("nr", &report_plaintext, 1<<O_REPORT);
   register_reporttype("txt", &report_template, 1<<O_ZUGVORLAGE);

src/common/kernel/build.c

@@ -882,18 +882,17 @@ build_building(unit * u, const building_type * btype, int want, order * ord)
   case ENOMATERIALS: {
     /* something missing from the list of materials */
     const construction * cons = btype->construction;
-    char * ch = buf;
+    resource * reslist = NULL;
     assert(cons);
-    for (c=0;cons->materials[c].number; c++) {
+    for (c=0;cons->materials[c].number; ++c) {
-      int n;
+      resource * res = malloc(sizeof(resource));
-      if (c!=0) strcat(ch++, ",");
+      res->number = cons->materials[c].number / cons->reqsize;
-      n = cons->materials[c].number / cons->reqsize;
+      res->type = cons->materials[c].rtype;
-      sprintf(ch, " %d %s", n?n:1,
+      res->next = reslist;
-        LOC(lang, resourcename(cons->materials[c].rtype, cons->materials[c].number!=1)));
+      reslist = res->next;
-      ch = ch+strlen(ch);
     }
     ADDMSG(&u->faction->msgs, msg_feedback(u, ord, "build_required",
-      "required", buf));
+      "required", reslist));
     return;
   }
   case ELOWSKILL:

src/common/kernel/item.h

@@ -31,6 +31,12 @@ typedef struct item {
 	struct item * next;
 } item;
 
+typedef struct resource {
+  const struct resource_type * type;
+  int number;
+  struct resource * next;
+} resource;
+
 /* bitfield values for resource_type::flags */
 #define RTF_NONE     0
 #define RTF_ITEM     (1<<0) /* this resource is an item */

src/common/kernel/reports.c

@@ -1697,24 +1697,30 @@ var_free_order(variant x)
 static variant
 var_copy_items(variant x)
 {
-  item * isrc, * idst = NULL, ** iptr = &idst;
+  item * isrc;
+  resource * rdst = NULL, ** rptr = &rdst;
 
   for (isrc = (item*)x.v; isrc!=NULL; isrc=isrc->next) {
-    item * itm = malloc(sizeof(item));
+    resource * res = malloc(sizeof(resource));
-    itm->number = isrc->number;
+    res->number = isrc->number;
-    itm->type = isrc->type;
+    res->type = isrc->type->rtype;
-    *iptr = itm;
+    *rptr = res;
-    iptr = &itm->next;
+    rptr = &res->next;
   }
-  *iptr = NULL;
+  *rptr = NULL;
-  x.v = idst;
+  x.v = rdst;
   return x;
 }
 
 static void
-var_free_items(variant x)
+var_free_resources(variant x)
 {
-  i_freeall((item**)&x.v);
+  resource ** rsrc = (resource**)&x.v;
+  while (*rsrc) {
+    resource * res = *rsrc;
+    *rsrc = res->next;
+    free(res);
+  }
 }
 
 void
@@ -1735,7 +1741,8 @@ reports_init(void)
   register_argtype("int", NULL, NULL, VAR_INT);
   register_argtype("string", var_free_string, var_copy_string, VAR_VOIDPTR);
   register_argtype("order", var_free_order, var_copy_order, VAR_VOIDPTR);
-  register_argtype("items", var_free_items, var_copy_items, VAR_VOIDPTR);
+  register_argtype("resources", var_free_resources, NULL, VAR_VOIDPTR);
+  register_argtype("items", var_free_resources, var_copy_items, VAR_VOIDPTR);
 
   /* register alternative visibility functions */
   register_function((pf_generic)view_neighbours, "view_neighbours");

src/res/messages.xml

@@ -4,8 +4,8 @@
     <type>
       <arg name="items" type="items"/>
     </type>
-    <text locale="de">"Einheiten können die folgenden Gegenstände beanspruchen: $items($items)"</text>
+    <text locale="de">"Einheiten können die folgenden Gegenstände beanspruchen: $resources($items)"</text>
-    <text locale="en">"Units can claim the following items: $items($items)"</text>
+    <text locale="en">"Units can claim the following items: $resources($items)"</text>
   </message>
   <message name="sighting" section="events">
     <type>