Extended the Purge (@) rule operation to support Classes, Fixed d3ad0ne.rule to support the new Purge (@) rule handling

OpenCL/inc_rp.cl

@@ -28,6 +28,50 @@
 #define PASTE_PW pw;
 #endif
 
+CONSTANT_AS u8 s_lookup[128] =
+{
+  [0 ... 31]    = 0, // control characters
+  [32]          = 1, // whitespace
+  [33 ... 47]   = 1, // from '!' to '/'
+  [48 ... 57]   = 0, // digits
+  [58 ... 64]   = 1, // from ':' to '@'
+  [65 ... 90]   = 0, // uppercase
+  [91 ... 96]   = 1, // from '[' to '`'
+  [97 ... 122]  = 0, // lowercase
+  [123 ... 126] = 1, // from '{' to '~'
+  [127]         = 0  // del
+};
+
+HC_INLINE bool is_l (u8 c)
+{
+  return (c >= 'a' && c <= 'z');
+}
+
+HC_INLINE bool is_u (u8 c)
+{
+  return (c >= 'A' && c <= 'Z');
+}
+
+HC_INLINE bool is_d (u8 c)
+{
+  return (c >= '0' && c <= '9');
+}
+
+HC_INLINE bool is_lh (u8 c)
+{
+  return (is_d (c) || (c >= 'a' && c <= 'f'));
+}
+
+HC_INLINE bool is_uh (u8 c)
+{
+  return (is_d (c) || (c >= 'A' && c <= 'F'));
+}
+
+HC_INLINE bool is_s (u8 c)
+{
+  return s_lookup[c] == 1;
+}
+
 DECLSPEC u32 generate_cmask (const u32 value)
 {
   const u32 rmask =  ((value & 0x40404040u) >> 1u)
@@ -543,6 +587,132 @@ DECLSPEC int mangle_purgechar (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p
   return (out_len);
 }
 
+DECLSPEC int mangle_purgeclass_l (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len)
+{
+  int out_len = 0;
+
+  for (int pos = 0; pos < len; pos++)
+  {
+    if (is_l (buf[pos])) continue;
+
+    buf[out_len] = buf[pos];
+
+    out_len++;
+  }
+
+  for (int pos = out_len; pos < len; pos++)
+  {
+    buf[pos] = 0;
+  }
+
+  return (out_len);
+}
+
+DECLSPEC int mangle_purgeclass_u (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len)
+{
+  int out_len = 0;
+
+  for (int pos = 0; pos < len; pos++)
+  {
+    if (is_u (buf[pos])) continue;
+
+    buf[out_len] = buf[pos];
+
+    out_len++;
+  }
+
+  for (int pos = out_len; pos < len; pos++)
+  {
+    buf[pos] = 0;
+  }
+
+  return (out_len);
+}
+
+DECLSPEC int mangle_purgeclass_d (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len)
+{
+  int out_len = 0;
+
+  for (int pos = 0; pos < len; pos++)
+  {
+    if (is_d (buf[pos])) continue;
+
+    buf[out_len] = buf[pos];
+
+    out_len++;
+  }
+
+  for (int pos = out_len; pos < len; pos++)
+  {
+    buf[pos] = 0;
+  }
+
+  return (out_len);
+}
+
+DECLSPEC int mangle_purgeclass_lh (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len)
+{
+  int out_len = 0;
+
+  for (int pos = 0; pos < len; pos++)
+  {
+    if (is_lh (buf[pos])) continue;
+
+    buf[out_len] = buf[pos];
+
+    out_len++;
+  }
+
+  for (int pos = out_len; pos < len; pos++)
+  {
+    buf[pos] = 0;
+  }
+
+  return (out_len);
+}
+
+DECLSPEC int mangle_purgeclass_uh (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len)
+{
+  int out_len = 0;
+
+  for (int pos = 0; pos < len; pos++)
+  {
+    if (is_uh (buf[pos])) continue;
+
+    buf[out_len] = buf[pos];
+
+    out_len++;
+  }
+
+  for (int pos = out_len; pos < len; pos++)
+  {
+    buf[pos] = 0;
+  }
+
+  return (out_len);
+}
+
+DECLSPEC int mangle_purgeclass_s (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len)
+{
+  int out_len = 0;
+
+  for (int pos = 0; pos < len; pos++)
+  {
+    if (is_s (buf[pos])) continue;
+
+    buf[out_len] = buf[pos];
+
+    out_len++;
+  }
+
+  for (int pos = out_len; pos < len; pos++)
+  {
+    buf[pos] = 0;
+  }
+
+  return (out_len);
+}
+
 DECLSPEC int mangle_dupechar_first (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len)
 {
   const int out_len = len + p0;
@@ -748,21 +918,21 @@ DECLSPEC int apply_rule (const u32 name, MAYBE_UNUSED const u8 p0, MAYBE_UNUSED
 
   switch (name)
   {
-    case RULE_OP_MANGLE_LREST:            out_len = mangle_lrest            (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_LREST:            out_len = mangle_lrest            (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_LREST_UFIRST:     out_len = mangle_lrest_ufirst     (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_LREST_UFIRST:     out_len = mangle_lrest_ufirst     (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_UREST:            out_len = mangle_urest            (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_UREST:            out_len = mangle_urest            (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_UREST_LFIRST:     out_len = mangle_urest_lfirst     (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_UREST_LFIRST:     out_len = mangle_urest_lfirst     (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_TREST:            out_len = mangle_trest            (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_TREST:            out_len = mangle_trest            (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_TOGGLE_AT:        out_len = mangle_toggle_at        (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_TOGGLE_AT:        out_len = mangle_toggle_at        (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_TOGGLE_AT_SEP:    out_len = mangle_toggle_at_sep    (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_TOGGLE_AT_SEP:    out_len = mangle_toggle_at_sep    (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_REVERSE:          out_len = mangle_reverse          (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_REVERSE:          out_len = mangle_reverse          (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_DUPEWORD:         out_len = mangle_dupeword         (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_DUPEWORD:         out_len = mangle_dupeword         (p0, p1,                   buf, out_len); break;
     case RULE_OP_MANGLE_DUPEWORD_TIMES:   out_len = mangle_dupeword_times   (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
-    case RULE_OP_MANGLE_REFLECT:          out_len = mangle_reflect          (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_REFLECT:          out_len = mangle_reflect          (p0, p1,                   buf, out_len); break;
     case RULE_OP_MANGLE_APPEND:           out_len = mangle_append           (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_PREPEND:          out_len = mangle_prepend          (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
-    case RULE_OP_MANGLE_ROTATE_LEFT:      out_len = mangle_rotate_left      (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_ROTATE_LEFT:      out_len = mangle_rotate_left      (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_ROTATE_RIGHT:     out_len = mangle_rotate_right     (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_ROTATE_RIGHT:     out_len = mangle_rotate_right     (p0, p1,                   buf, out_len); break;
     case RULE_OP_MANGLE_DELETE_FIRST:     out_len = mangle_delete_first     (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_DELETE_LAST:      out_len = mangle_delete_last      (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_DELETE_AT:        out_len = mangle_delete_at        (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
@@ -773,12 +943,18 @@ DECLSPEC int apply_rule (const u32 name, MAYBE_UNUSED const u8 p0, MAYBE_UNUSED
     case RULE_OP_MANGLE_TRUNCATE_AT:      out_len = mangle_truncate_at      (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_REPLACE:          out_len = mangle_replace          (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_PURGECHAR:        out_len = mangle_purgechar        (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_L:     out_len = mangle_purgeclass_l     (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_U:     out_len = mangle_purgeclass_u     (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_D:     out_len = mangle_purgeclass_d     (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_LH:    out_len = mangle_purgeclass_lh    (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_UH:    out_len = mangle_purgeclass_uh    (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_S:     out_len = mangle_purgeclass_s     (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_DUPECHAR_FIRST:   out_len = mangle_dupechar_first   (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_DUPECHAR_LAST:    out_len = mangle_dupechar_last    (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_DUPECHAR_ALL:     out_len = mangle_dupechar_all     (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
-    case RULE_OP_MANGLE_SWITCH_FIRST:     out_len = mangle_switch_first     (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_SWITCH_FIRST:     out_len = mangle_switch_first     (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_SWITCH_LAST:      out_len = mangle_switch_last      (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_SWITCH_LAST:      out_len = mangle_switch_last      (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_SWITCH_AT:        out_len = mangle_switch_at        (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_SWITCH_AT:        out_len = mangle_switch_at        (p0, p1,                   buf, out_len); break;
     case RULE_OP_MANGLE_CHR_SHIFTL:       out_len = mangle_chr_shiftl       (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_CHR_SHIFTR:       out_len = mangle_chr_shiftr       (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_CHR_INCR:         out_len = mangle_chr_incr         (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
@@ -787,8 +963,8 @@ DECLSPEC int apply_rule (const u32 name, MAYBE_UNUSED const u8 p0, MAYBE_UNUSED
     case RULE_OP_MANGLE_REPLACE_NM1:      out_len = mangle_replace_nm1      (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_DUPEBLOCK_FIRST:  out_len = mangle_dupeblock_first  (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
     case RULE_OP_MANGLE_DUPEBLOCK_LAST:   out_len = mangle_dupeblock_last   (p0, p1, (PRIVATE_AS u8 *) buf, out_len); break;
-    case RULE_OP_MANGLE_TITLE_SEP:        out_len = mangle_title_sep        (p0, p1,        buf, out_len); break;
+    case RULE_OP_MANGLE_TITLE_SEP:        out_len = mangle_title_sep        (p0, p1,                   buf, out_len); break;
-    case RULE_OP_MANGLE_TITLE:            out_len = mangle_title_sep        (' ', p1,       buf, out_len); break;
+    case RULE_OP_MANGLE_TITLE:            out_len = mangle_title_sep        (' ', p1,                  buf, out_len); break;
   }
 
   return out_len;

OpenCL/inc_rp.h

@@ -40,6 +40,12 @@
 #define RULE_OP_MANGLE_TRUNCATE_AT      '\''
 #define RULE_OP_MANGLE_REPLACE          's'
 #define RULE_OP_MANGLE_PURGECHAR        '@'
+#define RULE_OP_MANGLE_PURGECLASS_L     0x01
+#define RULE_OP_MANGLE_PURGECLASS_U     0x02
+#define RULE_OP_MANGLE_PURGECLASS_D     0x03
+#define RULE_OP_MANGLE_PURGECLASS_LH    0x04
+#define RULE_OP_MANGLE_PURGECLASS_UH    0x05
+#define RULE_OP_MANGLE_PURGECLASS_S     0x06
 #define RULE_OP_MANGLE_TOGGLECASE_REC   'a'
 #define RULE_OP_MANGLE_DUPECHAR_FIRST   'z'
 #define RULE_OP_MANGLE_DUPECHAR_LAST    'Z'
@@ -103,6 +109,12 @@ DECLSPEC int mangle_overstrike (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8
 DECLSPEC int mangle_truncate_at (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
 DECLSPEC int mangle_replace (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
 DECLSPEC int mangle_purgechar (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
+DECLSPEC int mangle_purgeclass_l (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
+DECLSPEC int mangle_purgeclass_u (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
+DECLSPEC int mangle_purgeclass_d (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
+DECLSPEC int mangle_purgeclass_lh (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
+DECLSPEC int mangle_purgeclass_uh (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
+DECLSPEC int mangle_purgeclass_s (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
 DECLSPEC int mangle_dupechar_first (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
 DECLSPEC int mangle_dupechar_last (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);
 DECLSPEC int mangle_dupechar_all (MAYBE_UNUSED const u8 p0, MAYBE_UNUSED const u8 p1, PRIVATE_AS u8 *buf, const int len);

OpenCL/inc_rp_optimized.cl

@@ -13,6 +13,50 @@
 #define MAYBE_UNUSED
 #endif
 
+CONSTANT_AS u8 s_lookup_optimized[128] =
+{
+  [0 ... 31]    = 0, // control characters
+  [32]          = 1, // whitespace
+  [33 ... 47]   = 1, // from '!' to '/'
+  [48 ... 57]   = 0, // digits
+  [58 ... 64]   = 1, // from ':' to '@'
+  [65 ... 90]   = 0, // uppercase
+  [91 ... 96]   = 1, // from '[' to '`'
+  [97 ... 122]  = 0, // lowercase
+  [123 ... 126] = 1, // from '{' to '~'
+  [127]         = 0  // del
+};
+
+HC_INLINE bool is_l (u8 c)
+{
+  return (c >= 'a' && c <= 'z');
+}
+
+HC_INLINE bool is_u (u8 c)
+{
+  return (c >= 'A' && c <= 'Z');
+}
+
+HC_INLINE bool is_d (u8 c)
+{
+  return (c >= '0' && c <= '9');
+}
+
+HC_INLINE bool is_lh (u8 c)
+{
+  return (is_d (c) || (c >= 'a' && c <= 'f'));
+}
+
+HC_INLINE bool is_uh (u8 c)
+{
+  return (is_d (c) || (c >= 'A' && c <= 'F'));
+}
+
+HC_INLINE bool is_s (u8 c)
+{
+  return s_lookup_optimized[c] == 1;
+}
+
 DECLSPEC u32 generate_cmask_optimized (const u32 value)
 {
   const u32 rmask =  ((value & 0x40404040u) >> 1u)
@@ -1824,6 +1868,252 @@ DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgechar (MAYBE_UNUSED const u32 p0, M
   return out_len;
 }
 
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_l (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len)
+{
+  u32 out_len = 0;
+
+  u32 buf_in[8];
+
+  buf_in[0] = buf0[0];
+  buf_in[1] = buf0[1];
+  buf_in[2] = buf0[2];
+  buf_in[3] = buf0[3];
+  buf_in[4] = buf1[0];
+  buf_in[5] = buf1[1];
+  buf_in[6] = buf1[2];
+  buf_in[7] = buf1[3];
+
+  u32 buf_out[8] = { 0 };
+
+  PRIVATE_AS u8 *in  = (PRIVATE_AS u8 *) buf_in;
+  PRIVATE_AS u8 *out = (PRIVATE_AS u8 *) buf_out;
+
+  for (u32 pos = 0; pos < in_len; pos++)
+  {
+    if (is_l (in[pos])) continue;
+
+    out[out_len] = in[pos];
+
+    out_len++;
+  }
+
+  buf0[0] = buf_out[0];
+  buf0[1] = buf_out[1];
+  buf0[2] = buf_out[2];
+  buf0[3] = buf_out[3];
+  buf1[0] = buf_out[4];
+  buf1[1] = buf_out[5];
+  buf1[2] = buf_out[6];
+  buf1[3] = buf_out[7];
+
+  return out_len;
+}
+
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_u (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len)
+{
+  u32 out_len = 0;
+
+  u32 buf_in[8];
+
+  buf_in[0] = buf0[0];
+  buf_in[1] = buf0[1];
+  buf_in[2] = buf0[2];
+  buf_in[3] = buf0[3];
+  buf_in[4] = buf1[0];
+  buf_in[5] = buf1[1];
+  buf_in[6] = buf1[2];
+  buf_in[7] = buf1[3];
+
+  u32 buf_out[8] = { 0 };
+
+  PRIVATE_AS u8 *in  = (PRIVATE_AS u8 *) buf_in;
+  PRIVATE_AS u8 *out = (PRIVATE_AS u8 *) buf_out;
+
+  for (u32 pos = 0; pos < in_len; pos++)
+  {
+    if (is_u (in[pos])) continue;
+
+    out[out_len] = in[pos];
+
+    out_len++;
+  }
+
+  buf0[0] = buf_out[0];
+  buf0[1] = buf_out[1];
+  buf0[2] = buf_out[2];
+  buf0[3] = buf_out[3];
+  buf1[0] = buf_out[4];
+  buf1[1] = buf_out[5];
+  buf1[2] = buf_out[6];
+  buf1[3] = buf_out[7];
+
+  return out_len;
+}
+
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_d (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len)
+{
+  u32 out_len = 0;
+
+  u32 buf_in[8];
+
+  buf_in[0] = buf0[0];
+  buf_in[1] = buf0[1];
+  buf_in[2] = buf0[2];
+  buf_in[3] = buf0[3];
+  buf_in[4] = buf1[0];
+  buf_in[5] = buf1[1];
+  buf_in[6] = buf1[2];
+  buf_in[7] = buf1[3];
+
+  u32 buf_out[8] = { 0 };
+
+  PRIVATE_AS u8 *in  = (PRIVATE_AS u8 *) buf_in;
+  PRIVATE_AS u8 *out = (PRIVATE_AS u8 *) buf_out;
+
+  for (u32 pos = 0; pos < in_len; pos++)
+  {
+    if (is_d (in[pos])) continue;
+
+    out[out_len] = in[pos];
+
+    out_len++;
+  }
+
+  buf0[0] = buf_out[0];
+  buf0[1] = buf_out[1];
+  buf0[2] = buf_out[2];
+  buf0[3] = buf_out[3];
+  buf1[0] = buf_out[4];
+  buf1[1] = buf_out[5];
+  buf1[2] = buf_out[6];
+  buf1[3] = buf_out[7];
+
+  return out_len;
+}
+
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_lh (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len)
+{
+  u32 out_len = 0;
+
+  u32 buf_in[8];
+
+  buf_in[0] = buf0[0];
+  buf_in[1] = buf0[1];
+  buf_in[2] = buf0[2];
+  buf_in[3] = buf0[3];
+  buf_in[4] = buf1[0];
+  buf_in[5] = buf1[1];
+  buf_in[6] = buf1[2];
+  buf_in[7] = buf1[3];
+
+  u32 buf_out[8] = { 0 };
+
+  PRIVATE_AS u8 *in  = (PRIVATE_AS u8 *) buf_in;
+  PRIVATE_AS u8 *out = (PRIVATE_AS u8 *) buf_out;
+
+  for (u32 pos = 0; pos < in_len; pos++)
+  {
+    if (is_lh (in[pos])) continue;
+
+    out[out_len] = in[pos];
+
+    out_len++;
+  }
+
+  buf0[0] = buf_out[0];
+  buf0[1] = buf_out[1];
+  buf0[2] = buf_out[2];
+  buf0[3] = buf_out[3];
+  buf1[0] = buf_out[4];
+  buf1[1] = buf_out[5];
+  buf1[2] = buf_out[6];
+  buf1[3] = buf_out[7];
+
+  return out_len;
+}
+
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_uh (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len)
+{
+  u32 out_len = 0;
+
+  u32 buf_in[8];
+
+  buf_in[0] = buf0[0];
+  buf_in[1] = buf0[1];
+  buf_in[2] = buf0[2];
+  buf_in[3] = buf0[3];
+  buf_in[4] = buf1[0];
+  buf_in[5] = buf1[1];
+  buf_in[6] = buf1[2];
+  buf_in[7] = buf1[3];
+
+  u32 buf_out[8] = { 0 };
+
+  PRIVATE_AS u8 *in  = (PRIVATE_AS u8 *) buf_in;
+  PRIVATE_AS u8 *out = (PRIVATE_AS u8 *) buf_out;
+
+  for (u32 pos = 0; pos < in_len; pos++)
+  {
+    if (is_uh (in[pos])) continue;
+
+    out[out_len] = in[pos];
+
+    out_len++;
+  }
+
+  buf0[0] = buf_out[0];
+  buf0[1] = buf_out[1];
+  buf0[2] = buf_out[2];
+  buf0[3] = buf_out[3];
+  buf1[0] = buf_out[4];
+  buf1[1] = buf_out[5];
+  buf1[2] = buf_out[6];
+  buf1[3] = buf_out[7];
+
+  return out_len;
+}
+
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_s (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len)
+{
+  u32 out_len = 0;
+
+  u32 buf_in[8];
+
+  buf_in[0] = buf0[0];
+  buf_in[1] = buf0[1];
+  buf_in[2] = buf0[2];
+  buf_in[3] = buf0[3];
+  buf_in[4] = buf1[0];
+  buf_in[5] = buf1[1];
+  buf_in[6] = buf1[2];
+  buf_in[7] = buf1[3];
+
+  u32 buf_out[8] = { 0 };
+
+  PRIVATE_AS u8 *in  = (PRIVATE_AS u8 *) buf_in;
+  PRIVATE_AS u8 *out = (PRIVATE_AS u8 *) buf_out;
+
+  for (u32 pos = 0; pos < in_len; pos++)
+  {
+    if (is_s (in[pos])) continue;
+
+    out[out_len] = in[pos];
+
+    out_len++;
+  }
+
+  buf0[0] = buf_out[0];
+  buf0[1] = buf_out[1];
+  buf0[2] = buf_out[2];
+  buf0[3] = buf_out[3];
+  buf1[0] = buf_out[4];
+  buf1[1] = buf_out[5];
+  buf1[2] = buf_out[6];
+  buf1[3] = buf_out[7];
+
+  return out_len;
+}
+
 DECLSPEC HC_INLINE_RP u32 rule_op_mangle_dupechar_first (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len)
 {
   if ( in_len       ==  0) return in_len;
@@ -2380,6 +2670,12 @@ DECLSPEC u32 apply_rule_optimized (const u32 name, const u32 p0, const u32 p1, P
     case RULE_OP_MANGLE_TRUNCATE_AT:      out_len = rule_op_mangle_truncate_at      (p0, p1, buf0, buf1, out_len); break;
     case RULE_OP_MANGLE_REPLACE:          out_len = rule_op_mangle_replace          (p0, p1, buf0, buf1, out_len); break;
     case RULE_OP_MANGLE_PURGECHAR:        out_len = rule_op_mangle_purgechar        (p0, p1, buf0, buf1, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_L:     out_len = rule_op_mangle_purgeclass_l     (p0, p1, buf0, buf1, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_U:     out_len = rule_op_mangle_purgeclass_u     (p0, p1, buf0, buf1, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_D:     out_len = rule_op_mangle_purgeclass_d     (p0, p1, buf0, buf1, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_LH:    out_len = rule_op_mangle_purgeclass_lh    (p0, p1, buf0, buf1, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_UH:    out_len = rule_op_mangle_purgeclass_uh    (p0, p1, buf0, buf1, out_len); break;
+    case RULE_OP_MANGLE_PURGECLASS_S:     out_len = rule_op_mangle_purgeclass_s     (p0, p1, buf0, buf1, out_len); break;
     //case RULE_OP_MANGLE_TOGGLECASE_REC:   out_len = rule_op_mangle_togglecase_rec   (p0, p1, buf0, buf1, out_len); break;
     case RULE_OP_MANGLE_DUPECHAR_FIRST:   out_len = rule_op_mangle_dupechar_first   (p0, p1, buf0, buf1, out_len); break;
     case RULE_OP_MANGLE_DUPECHAR_LAST:    out_len = rule_op_mangle_dupechar_last    (p0, p1, buf0, buf1, out_len); break;

OpenCL/inc_rp_optimized.h

@@ -46,6 +46,12 @@
 #define RULE_OP_MANGLE_TRUNCATE_AT      '\''
 #define RULE_OP_MANGLE_REPLACE          's'
 #define RULE_OP_MANGLE_PURGECHAR        '@'
+#define RULE_OP_MANGLE_PURGECLASS_L     0x01
+#define RULE_OP_MANGLE_PURGECLASS_U     0x02
+#define RULE_OP_MANGLE_PURGECLASS_D     0x03
+#define RULE_OP_MANGLE_PURGECLASS_LH    0x04
+#define RULE_OP_MANGLE_PURGECLASS_UH    0x05
+#define RULE_OP_MANGLE_PURGECLASS_S     0x06
 #define RULE_OP_MANGLE_TOGGLECASE_REC   'a'
 #define RULE_OP_MANGLE_DUPECHAR_FIRST   'z'
 #define RULE_OP_MANGLE_DUPECHAR_LAST    'Z'
@@ -113,6 +119,12 @@ DECLSPEC u32 search_on_register (const u32 in, const u32 p0);
 DECLSPEC u32 replace_on_register (const u32 in, const u32 r, const u32 p1);
 DECLSPEC HC_INLINE_RP u32 rule_op_mangle_replace (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
 DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgechar (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_l (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_u (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_d (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_lh (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_uh (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
+DECLSPEC HC_INLINE_RP u32 rule_op_mangle_purgeclass_s (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
 DECLSPEC HC_INLINE_RP u32 rule_op_mangle_dupechar_first (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
 DECLSPEC HC_INLINE_RP u32 rule_op_mangle_dupechar_last (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);
 DECLSPEC HC_INLINE_RP u32 rule_op_mangle_dupechar_all (MAYBE_UNUSED const u32 p0, MAYBE_UNUSED const u32 p1, MAYBE_UNUSED PRIVATE_AS u32 *buf0, MAYBE_UNUSED PRIVATE_AS u32 *buf1, const u32 in_len);

docs/changes.txt

@@ -133,6 +133,8 @@
 - Hardware Monitor: avoid sprintf in src/ext_iokit.c
 - Help: show supported hash-modes only with -hh
 - Makefile: prevent make failure with Apple Silicon in case of partial rebuild
+- Rules: Extended the Purge (@) rule operation to support Classes
+- Rules: Fixed d3ad0ne.rule to support the new Purge (@) rule handling
 - Rules: Rename best64.rule to best66.rule and remove the unknown section from it
 
 * changes v6.2.5 -> v6.2.6

docs/credits.txt

@@ -25,6 +25,7 @@ Gabriele "matrix" Gristina <matrix@hashcat.net> (@gm4tr1x)
 * Apple macOS port
 * Apple Silicon support
 * Universal binary on Apple Silicon
+* Extended the Purge (@) rule operation to support Classes
 * Hardware monitor initial code base and maintenance
 * Test suite initial code base and maintenance
 * Makefile initial code base

docs/rules.txt

@@ -23,7 +23,7 @@
 #define RULE_OP_MANGLE_OVERSTRIKE       'o' // overwrite with char X at pos N
 #define RULE_OP_MANGLE_TRUNCATE_AT      '\''// cut the word at pos N
 #define RULE_OP_MANGLE_REPLACE          's' // replace all chars X with char Y
-#define RULE_OP_MANGLE_PURGECHAR        '@' // purge all instances of char X
+#define RULE_OP_MANGLE_PURGECHAR        '@' // purge all instances of char X (@X) or purge all instances of chars in class X (@?X)
 #define RULE_OP_MANGLE_DUPECHAR_FIRST   'z' // prepend first char of word to itself N times. ex: hello -> hhhello
 #define RULE_OP_MANGLE_DUPECHAR_LAST    'Z' // append last char of word to itself N times.   ex: hello -> hellooo
 #define RULE_OP_MANGLE_DUPECHAR_ALL     'q' // duplicate all chars. ex: hello -> hheelllloo

include/rp.h

@@ -43,10 +43,13 @@ typedef struct
 
 } rp_gen_ops_t;
 
-bool class_num   (const u8 c);
+bool class_num       (const u8 c);
-bool class_lower (const u8 c);
+bool class_lower     (const u8 c);
-bool class_upper (const u8 c);
+bool class_upper     (const u8 c);
-bool class_alpha (const u8 c);
+bool class_lower_hex (const u8 c);
+bool class_upper_hex (const u8 c);
+bool class_sym       (const u8 c);
+bool class_alpha     (const u8 c);
 
 int conv_ctoi (const u8 c);
 int conv_itoc (const u8 c);

include/types.h

@@ -331,6 +331,12 @@ typedef enum rule_functions
   RULE_OP_MANGLE_TRUNCATE_AT     = '\'',
   RULE_OP_MANGLE_REPLACE         = 's',
   RULE_OP_MANGLE_PURGECHAR       = '@',
+  RULE_OP_MANGLE_PURGECLASS_L    = 0x01,
+  RULE_OP_MANGLE_PURGECLASS_U    = 0x02,
+  RULE_OP_MANGLE_PURGECLASS_D    = 0x03,
+  RULE_OP_MANGLE_PURGECLASS_LH   = 0x04,
+  RULE_OP_MANGLE_PURGECLASS_UH   = 0x05,
+  RULE_OP_MANGLE_PURGECLASS_S    = 0x06,
   RULE_OP_MANGLE_TOGGLECASE_REC  = 'a',
   RULE_OP_MANGLE_DUPECHAR_FIRST  = 'z',
   RULE_OP_MANGLE_DUPECHAR_LAST   = 'Z',

rules/d3ad0ne.rule

@@ -5823,7 +5823,7 @@ O05 o28
 *74 O6B
 *75 $5
 *75 $m
-*75 @? '7
+*75 @?? '7
 *75 D1
 *75 D4
 *75 D6

src/rp.c

@@ -106,6 +106,21 @@ bool class_upper (const u8 c)
   return ((c >= 'A') && (c <= 'Z'));
 }
 
+bool class_lower_hex (const u8 c)
+{
+  return ((c >= '0') && (c <= '9')) || ((c >= 'a') && (c <= 'f'));
+}
+
+bool class_upper_hex (const u8 c)
+{
+  return ((c >= '0') && (c <= '9')) || ((c >= 'A') && (c <= 'F'));
+}
+
+bool class_sym (const u8 c)
+{
+  return ((c == ' ') || ((c >= '!') && (c <= '/')) || ((c >= ':') && (c <= '@')) || ((c >= '[') && (c <= '`')) || ((c >= '{') && (c <= '~')));
+}
+
 bool class_alpha (const u8 c)
 {
   return (class_lower (c) || class_upper (c));
@@ -373,6 +388,52 @@ int cpu_rule_to_kernel_rule (char *rule_buf, u32 rule_len, kernel_rule_t *rule)
         break;
 
       case RULE_OP_MANGLE_PURGECHAR:
+        if ((rule_pos + 1) < rule_len && rule_buf[rule_pos+1] == '?')
+        {
+          if ((rule_pos + 2) == rule_len) return -1;
+
+          switch (rule_buf[rule_pos+2]) {
+            case '?':
+              SET_NAME (rule, rule_buf[rule_pos]);
+              SET_P0   (rule, rule_buf[rule_pos]);
+              INCR_POS;
+              break;
+            case 'l':
+              SET_NAME (rule, RULE_OP_MANGLE_PURGECLASS_L);
+              INCR_POS;
+              INCR_POS;
+              break;
+            case 'u':
+              SET_NAME (rule, RULE_OP_MANGLE_PURGECLASS_U);
+              INCR_POS;
+              INCR_POS;
+              break;
+            case 'd':
+              SET_NAME (rule, RULE_OP_MANGLE_PURGECLASS_D);
+              INCR_POS;
+              INCR_POS;
+              break;
+            case 'h':
+              SET_NAME (rule, RULE_OP_MANGLE_PURGECLASS_LH);
+              INCR_POS;
+              INCR_POS;
+              break;
+            case 'H':
+              SET_NAME (rule, RULE_OP_MANGLE_PURGECLASS_UH);
+              INCR_POS;
+              INCR_POS;
+              break;
+            case 's':
+              SET_NAME (rule, RULE_OP_MANGLE_PURGECLASS_S);
+              INCR_POS;
+              INCR_POS;
+              break;
+            default :
+              return -1;
+          }
+          break;
+        }
+
         SET_NAME (rule, rule_buf[rule_pos]);
         SET_P0   (rule, rule_buf[rule_pos]);
         break;
@@ -604,6 +665,38 @@ int kernel_rule_to_cpu_rule (char *rule_buf, kernel_rule_t *rule)
       case RULE_OP_MANGLE_PURGECHAR:
         rule_buf[rule_pos] = rule_cmd;
         GET_P0 (rule);
+        if (rule_buf[rule_pos] == '?') rule_buf[++rule_pos] = '?';
+        break;
+
+      case RULE_OP_MANGLE_PURGECLASS_L:
+        rule_buf[rule_pos++] = RULE_OP_MANGLE_PURGECHAR;
+        rule_buf[rule_pos++] = '?';
+        rule_buf[rule_pos] = 'l';
+        break;
+      case RULE_OP_MANGLE_PURGECLASS_U:
+        rule_buf[rule_pos++] = RULE_OP_MANGLE_PURGECHAR;
+        rule_buf[rule_pos++] = '?';
+        rule_buf[rule_pos] = 'u';
+        break;
+      case RULE_OP_MANGLE_PURGECLASS_D:
+        rule_buf[rule_pos++] = RULE_OP_MANGLE_PURGECHAR;
+        rule_buf[rule_pos++] = '?';
+        rule_buf[rule_pos] = 'd';
+        break;
+      case RULE_OP_MANGLE_PURGECLASS_LH:
+        rule_buf[rule_pos++] = RULE_OP_MANGLE_PURGECHAR;
+        rule_buf[rule_pos++] = '?';
+        rule_buf[rule_pos] = 'h';
+        break;
+      case RULE_OP_MANGLE_PURGECLASS_UH:
+        rule_buf[rule_pos++] = RULE_OP_MANGLE_PURGECHAR;
+        rule_buf[rule_pos++] = '?';
+        rule_buf[rule_pos] = 'H';
+        break;
+      case RULE_OP_MANGLE_PURGECLASS_S:
+        rule_buf[rule_pos++] = RULE_OP_MANGLE_PURGECHAR;
+        rule_buf[rule_pos++] = '?';
+        rule_buf[rule_pos] = 's';
         break;
 
       case RULE_OP_MANGLE_TOGGLECASE_REC:

src/rp_cpu.c

@@ -347,6 +347,114 @@ static int mangle_purgechar (char arr[RP_PASSWORD_SIZE], int arr_len, char c)
   return (ret_len);
 }
 
+static int mangle_purgeclass_l (char arr[RP_PASSWORD_SIZE], int arr_len)
+{
+  int arr_pos;
+
+  int ret_len;
+
+  for (ret_len = 0, arr_pos = 0; arr_pos < arr_len; arr_pos++)
+  {
+    if (class_lower (arr[arr_pos])) continue;
+
+    arr[ret_len] = arr[arr_pos];
+
+    ret_len++;
+  }
+
+  return (ret_len);
+}
+
+static int mangle_purgeclass_u (char arr[RP_PASSWORD_SIZE], int arr_len)
+{
+  int arr_pos;
+
+  int ret_len;
+
+  for (ret_len = 0, arr_pos = 0; arr_pos < arr_len; arr_pos++)
+  {
+    if (class_upper (arr[arr_pos])) continue;
+
+    arr[ret_len] = arr[arr_pos];
+
+    ret_len++;
+  }
+
+  return (ret_len);
+}
+
+static int mangle_purgeclass_d (char arr[RP_PASSWORD_SIZE], int arr_len)
+{
+  int arr_pos;
+
+  int ret_len;
+
+  for (ret_len = 0, arr_pos = 0; arr_pos < arr_len; arr_pos++)
+  {
+    if (class_num (arr[arr_pos])) continue;
+
+    arr[ret_len] = arr[arr_pos];
+
+    ret_len++;
+  }
+
+  return (ret_len);
+}
+
+static int mangle_purgeclass_lh (char arr[RP_PASSWORD_SIZE], int arr_len)
+{
+  int arr_pos;
+
+  int ret_len;
+
+  for (ret_len = 0, arr_pos = 0; arr_pos < arr_len; arr_pos++)
+  {
+    if (class_lower_hex (arr[arr_pos])) continue;
+
+    arr[ret_len] = arr[arr_pos];
+
+    ret_len++;
+  }
+
+  return (ret_len);
+}
+
+static int mangle_purgeclass_uh (char arr[RP_PASSWORD_SIZE], int arr_len)
+{
+  int arr_pos;
+
+  int ret_len;
+
+  for (ret_len = 0, arr_pos = 0; arr_pos < arr_len; arr_pos++)
+  {
+    if (class_upper_hex (arr[arr_pos])) continue;
+
+    arr[ret_len] = arr[arr_pos];
+
+    ret_len++;
+  }
+
+  return (ret_len);
+}
+
+static int mangle_purgeclass_s (char arr[RP_PASSWORD_SIZE], int arr_len)
+{
+  int arr_pos;
+
+  int ret_len;
+
+  for (ret_len = 0, arr_pos = 0; arr_pos < arr_len; arr_pos++)
+  {
+    if (class_sym (arr[arr_pos])) continue;
+
+    arr[ret_len] = arr[arr_pos];
+
+    ret_len++;
+  }
+
+  return (ret_len);
+}
+
 static int mangle_dupeblock_prepend (char arr[RP_PASSWORD_SIZE], int arr_len, int ulen)
 {
   if (ulen > arr_len) return (arr_len);
@@ -699,6 +807,23 @@ int _old_apply_rule (const char *rule, int rule_len, char in[RP_PASSWORD_SIZE],
 
       case RULE_OP_MANGLE_PURGECHAR:
         NEXT_RULEPOS (rule_pos);
+        if (rule_new[rule_pos] == '?')
+        {
+          NEXT_RULEPOS (rule_pos);
+          switch (rule_new[rule_pos])
+          {
+            case '?': out_len = mangle_purgechar     (out, out_len, rule_new[rule_pos]); break;
+            case 'l': out_len = mangle_purgeclass_l  (out, out_len); break;
+            case 'u': out_len = mangle_purgeclass_u  (out, out_len); break;
+            case 'd': out_len = mangle_purgeclass_d  (out, out_len); break;
+            case 'h': out_len = mangle_purgeclass_lh (out, out_len); break;
+            case 'H': out_len = mangle_purgeclass_uh (out, out_len); break;
+            case 's': out_len = mangle_purgeclass_s  (out, out_len); break;
+            default : return (RULE_RC_SYNTAX_ERROR);
+          }
+          break;
+        }
+
         out_len = mangle_purgechar (out, out_len, rule_new[rule_pos]);
         break;
 
@@ -921,7 +1046,9 @@ int run_rule_engine (const int rule_len, const char *rule_buf)
   if (rule_len == 0) return 0;
 
   if (rule_len == 1)
+  {
     if (rule_buf[0] == RULE_OP_MANGLE_NOOP) return 0;
+  }
 
   return 1;
 }