(mfont_list): If FONT is null, use a temporary font.

[m17n/m17n-lib.git] / src / symbol.c

diff --git a/src/symbol.c b/src/symbol.c
index b0741a5..2dd32d3 100644 (file)
--- a/src/symbol.c
+++ b/src/symbol.c
@@ -148,8 +148,7 @@ void
 msymbol__fini ()
 {
   int i;
-  MSymbol sym, next;
-  int freed_symbols = 0;
+  MSymbol sym;
 
   for (i = 0; i < SYMBOL_TABLE_SIZE; i++)
     for (sym = symbol_table[i]; sym; sym = sym->next)
@@ -158,7 +157,17 @@ msymbol__fini ()
          if (sym->plist.key->managing_key)
            M17N_OBJECT_UNREF (sym->plist.val);
          M17N_OBJECT_UNREF (sym->plist.next);
+         sym->plist.key = Mnil;
        }
+}
+
+void
+msymbol__free_table ()
+{
+  int i;
+  MSymbol sym, next;
+  int freed_symbols = 0;
+
   for (i = 0; i < SYMBOL_TABLE_SIZE; i++)
     {
       for (sym = symbol_table[i]; sym; sym = next)
@@ -187,6 +196,24 @@ msymbol__with_len (const char *name, int len)
   return msymbol (p);
 }
 
+/** Return a plist of symbols that has non-NULL property PROP.  If
+    PROP is Mnil, return a plist of all symbols.  Values of the plist
+    is NULL.  */
+
+MPlist *
+msymbol__list (MSymbol prop)
+{
+  MPlist *plist = mplist ();
+  int i;
+  MSymbol sym;
+
+  for (i = 0; i < SYMBOL_TABLE_SIZE; i++)
+    for (sym = symbol_table[i]; sym; sym = sym->next)
+      if (prop == Mnil || msymbol_get (sym, prop))
+       mplist_push (plist, sym, NULL);
+  return plist;
+}
+
 
 /** Canonicalize the name of SYM, and return a symbol of the
     canonicalized name.  Canonicalization is done by this rule:
@@ -451,6 +478,23 @@ msymbol_as_managing_key (const char *name)
 /*=*/
 
 /***en
+    @brief Check if a symbol is a managing key.
+
+    The msymbol_is_managing_key () function checks if the sysmbol
+    $SYMBOL is a managing key or not.
+
+    @return Return 1 if the symbol is a managing key.  Otherwise,
+    return 0.  */
+
+int
+msymbol_is_managing_key (MSymbol symbol)
+{
+  return (symbol->managing_key == 1);
+}
+
+/*=*/
+
+/***en
     @brief Search for a symbol that has a specified name.
 
     The msymbol_exist () function searches for the symbol whose name
@@ -704,7 +748,7 @@ MSymbol
 mdebug_dump_all_symbols (int indent)
 {
   char *prefix;
-  int i;
+  int i, n;
   MSymbol sym;
 
   if (indent < 0)
@@ -714,14 +758,15 @@ mdebug_dump_all_symbols (int indent)
   prefix[indent] = 0;
 
   fprintf (stderr, "(symbol-list");
-  for (i = 0; i < SYMBOL_TABLE_SIZE; i++)
+  for (i = n = 0; i < SYMBOL_TABLE_SIZE; i++)
     if ((sym = symbol_table[i]))
       {
        fprintf (stderr, "\n%s  (%4d", prefix, i);
-       for (; sym; sym = sym->next)
+       for (; sym; sym = sym->next, n++)
          fprintf (stderr, " '%s'", sym->name);
        fprintf (stderr, ")");
       }
+  fprintf (stderr, "\n%s  (total %d)", prefix, n);
   fprintf (stderr, ")");
   return Mnil;
 }