ncurses 6.0 - patch 20161231

[ncurses.git] / form / fty_enum.c

diff --git a/form/fty_enum.c b/form/fty_enum.c
index 054cc4dc862d6f69d0b2b618c873e851cc5b9a76..d3351644ef1849f2aa9de6dfd7ab31674cc08e8c 100644 (file)
--- a/form/fty_enum.c
+++ b/form/fty_enum.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2004,2006 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -34,7 +34,7 @@
 
 #include "form.priv.h"
 
-MODULE_ID("$Id: fty_enum.c,v 1.20 2006/04/22 21:33:05 tom Exp $")
+MODULE_ID("$Id: fty_enum.c,v 1.26 2010/05/01 21:11:07 tom Exp $")
 
 typedef struct
   {
@@ -45,40 +45,97 @@ typedef struct
   }
 enumARG;
 
+typedef struct
+  {
+    char **kwds;
+    int ccase;
+    int cunique;
+  }
+enumParams;
+
 /*---------------------------------------------------------------------------
 |   Facility      :  libnform  
-|   Function      :  static void *Make_Enum_Type( va_list * ap )
+|   Function      :  static void *Generic_Enum_Type(void * arg)
 |   
 |   Description   :  Allocate structure for enumeration type argument.
 |
 |   Return Values :  Pointer to argument structure or NULL on error
 +--------------------------------------------------------------------------*/
 static void *
-Make_Enum_Type(va_list *ap)
+Generic_Enum_Type(void *arg)
 {
-  enumARG *argp = (enumARG *)malloc(sizeof(enumARG));
+  enumARG *argp = (enumARG *)0;
+  enumParams *params = (enumParams *) arg;
 
-  if (argp)
+  if (params)
     {
-      int cnt = 0;
-      char **kp = (char **)0;
-      int ccase, cunique;
+      argp = typeMalloc(enumARG, 1);
+
+      if (argp)
+       {
+         int cnt = 0;
+         char **kp = (char **)0;
+         char **kwds = (char **)0;
+         char **kptarget;
+         int ccase, cunique;
+
+         T((T_CREATE("enumARG %p"), (void *)argp));
+         kwds = params->kwds;
+         ccase = params->ccase;
+         cunique = params->cunique;
 
-      argp->kwds = va_arg(*ap, char **);
-      ccase = va_arg(*ap, int);
-      cunique = va_arg(*ap, int);
+         argp->checkcase = ccase ? TRUE : FALSE;
+         argp->checkunique = cunique ? TRUE : FALSE;
+         argp->kwds = (char **)0;
 
-      argp->checkcase = ccase ? TRUE : FALSE;
-      argp->checkunique = cunique ? TRUE : FALSE;
+         kp = kwds;
+         while (kp && (*kp++))
+           cnt++;
+         argp->count = cnt;
 
-      kp = argp->kwds;
-      while (kp && (*kp++))
-       cnt++;
-      argp->count = cnt;
+         if (cnt > 0)
+           {
+             /* We copy the keywords, because we can't rely on the fact
+                that the caller doesn't relocate or free the memory used
+                for the keywords (maybe he has GC)
+              */
+             argp->kwds = typeMalloc(char *, cnt + 1);
+
+             kp = kwds;
+             if ((kptarget = argp->kwds) != 0)
+               {
+                 while (kp && (*kp))
+                   {
+                     (*kptarget++) = strdup(*kp++);
+                   }
+                 *kptarget = (char *)0;
+               }
+           }
+       }
     }
   return (void *)argp;
 }
 
+/*---------------------------------------------------------------------------
+|   Facility      :  libnform  
+|   Function      :  static void *Make_Enum_Type( va_list * ap )
+|   
+|   Description   :  Allocate structure for enumeration type argument.
+|
+|   Return Values :  Pointer to argument structure or NULL on error
++--------------------------------------------------------------------------*/
+static void *
+Make_Enum_Type(va_list *ap)
+{
+  enumParams params;
+
+  params.kwds = va_arg(*ap, char **);
+  params.ccase = va_arg(*ap, int);
+  params.cunique = va_arg(*ap, int);
+
+  return Generic_Enum_Type((void *)&params);
+}
+
 /*---------------------------------------------------------------------------
 |   Facility      :  libnform  
 |   Function      :  static void *Copy_Enum_Type( const void * argp )
@@ -96,10 +153,29 @@ Copy_Enum_Type(const void *argp)
     {
       const enumARG *ap = (const enumARG *)argp;
 
-      result = (enumARG *)malloc(sizeof(enumARG));
+      result = typeMalloc(enumARG, 1);
 
       if (result)
-       *result = *ap;
+       {
+         T((T_CREATE("enumARG %p"), (void *)result));
+         *result = *ap;
+
+         if (ap->count > 0)
+           {
+             char **kptarget;
+             char **kp = ap->kwds;
+             result->kwds = typeMalloc(char *, 1 + ap->count);
+
+             if ((kptarget = result->kwds) != 0)
+               {
+                 while (kp && (*kp))
+                   {
+                     (*kptarget++) = strdup(*kp++);
+                   }
+                 *kptarget = (char *)0;
+               }
+           }
+       }
     }
   return (void *)result;
 }
@@ -116,7 +192,24 @@ static void
 Free_Enum_Type(void *argp)
 {
   if (argp)
-    free(argp);
+    {
+      const enumARG *ap = (const enumARG *)argp;
+
+      if (ap->kwds && ap->count > 0)
+       {
+         char **kp = ap->kwds;
+         int cnt = 0;
+
+         while (kp && (*kp))
+           {
+             free(*kp++);
+             cnt++;
+           }
+         assert(cnt == ap->count);
+         free(ap->kwds);
+       }
+      free(argp);
+    }
 }
 
 #define SKIP_SPACE(x) while(((*(x))!='\0') && (is_blank(*(x)))) (x)++
@@ -322,13 +415,28 @@ static FIELDTYPE typeENUM =
   Make_Enum_Type,
   Copy_Enum_Type,
   Free_Enum_Type,
-  Check_Enum_Field,
-  NULL,
-  Next_Enum,
-  Previous_Enum
+  INIT_FT_FUNC(Check_Enum_Field),
+  INIT_FT_FUNC(NULL),
+  INIT_FT_FUNC(Next_Enum),
+  INIT_FT_FUNC(Previous_Enum),
+#if NCURSES_INTEROP_FUNCS
+  Generic_Enum_Type
+#endif
 };
 
 NCURSES_EXPORT_VAR(FIELDTYPE *)
 TYPE_ENUM = &typeENUM;
 
+#if NCURSES_INTEROP_FUNCS
+/* The next routines are to simplify the use of ncurses from
+   programming languages with restictions on interop with C level
+   constructs (e.g. variable access or va_list + ellipsis constructs)
+*/
+NCURSES_EXPORT(FIELDTYPE *)
+_nc_TYPE_ENUM(void)
+{
+  return TYPE_ENUM;
+}
+#endif
+
 /* fty_enum.c ends here */