Parse CLI commands. We use the same parser as for configuration files (because

we want to allow filter and similar complex constructs to be used in commands
and we should avoid code duplication), only with CLI_MARKER token prepended
before the whole input.

Defined macro CF_CLI(cmd, args, help) for defining CLI commands in .Y files.
The first argument specifies the command itself, the remaining two arguments
are copied to the help file (er, will be copied after the help file starts
to exist). This macro automatically creates a skeleton rule for the command,
you only need to append arguments as in:

	CF_CLI(STEAL MONEY, <$>, [[Steal <$> US dollars or equivalent in any other currency]]): NUM {
		cli_msg(0, "%d$ stolen", $3);
	} ;

Also don't forget to reset lexer state between inputs.

1 files changed, 23 insertions, 15 deletions

diff --git a/conf/cf-lex.l b/conf/cf-lex.l
index 21727a9..258ca7e 100644
--- a/conf/cf-lex.l
+++ b/conf/cf-lex.l
@@ -34,14 +34,12 @@ static struct keyword {
 
 static struct keyword *kw_hash[KW_HASH_SIZE];
 static struct symbol **sym_hash;
-static int allow_new_symbols;
 
 int conf_lino;
 
 static int cf_hash(byte *c);
 static struct symbol *cf_find_sym(byte *c, unsigned int h0);
 
-pool *cfg_pool;
 linpool *cfg_mem;
 
 int (*cf_read_hook)(byte *buf, unsigned int max);
@@ -54,7 +52,7 @@ int (*cf_read_hook)(byte *buf, unsigned int max);
 
 %option noyywrap
 
-%x COMMENT CCOMM
+%x COMMENT CCOMM CLI
 
 ALPHA [a-zA-Z_]
 DIGIT [0-9]
@@ -121,6 +119,11 @@ WHITE [ \t]
   return SYM;
 }
 
+<CLI>! {
+  BEGIN(INITIAL);
+  return CLI_MARKER;
+}
+
 [={}:;,()+*/%-<>~\[\]] {
   return yytext[0];
 }
@@ -174,17 +177,18 @@ static struct symbol *
 cf_find_sym(byte *c, unsigned int h0)
 {
   unsigned int h = h0 & (SYM_HASH_SIZE-1);
-  struct symbol *s = sym_hash[h];
+  struct symbol *s;
   int l;
 
-  while (s)
-    {
-      if (!strcmp(s->name, c))
-        return s;
-      s = s->next;
-    }
-  if (!allow_new_symbols)
-    return NULL;
+  if (!sym_hash)
+    sym_hash = cfg_allocz(SYM_HASH_SIZE * sizeof(struct keyword *));
+  else
+    for(s = sym_hash[h]; s; s=s->next)
+      {
+	if (!strcmp(s->name, c))
+	  return s;
+	s = s->next;
+      }
   l = strlen(c);
   if (l > SYM_MAX_LEN)
     cf_error("Symbol too long");
@@ -230,11 +234,15 @@ cf_define_symbol(struct symbol *sym, int type, void *def)
 }
 
 void
-cf_lex_init(int flag)
+cf_lex_init(int is_cli)
 {
-  if (allow_new_symbols = flag)
-    sym_hash = cfg_allocz(SYM_HASH_SIZE * sizeof(struct keyword *));
+  sym_hash = NULL;
   conf_lino = 1;
+  yyrestart(NULL);
+  if (is_cli)
+    BEGIN(CLI);
+  else
+    BEGIN(INITIAL);
 }
 
 void