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mimetypes-gram.c

/* A Bison parser, made by GNU Bison 1.875.  */

/* Skeleton parser for Yacc-like parsing with Bison,
   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* As a special exception, when this file is copied by Bison into a
   Bison output file, you may use that output file without restriction.
   This special exception was added by the Free Software Foundation
   in version 1.24 of Bison.  */

/* Written by Richard Stallman by simplifying the original so called
   ``semantic'' parser.  */

/* All symbols defined below should begin with mimetypes_yy or YY, to avoid
   infringing on user name space.  This should be done even for local
   variables, as they might otherwise be expanded by user macros.
   There are some unavoidable exceptions within include files to
   define necessary library symbols; they are noted "INFRINGES ON
   USER NAME SPACE" below.  */

/* Identify Bison output.  */
#define YYBISON 1

/* Skeleton name.  */
#define YYSKELETON_NAME "yacc.c"

/* Pure parsers.  */
#define YYPURE 0

/* Using locations.  */
#define YYLSP_NEEDED 0



/* Tokens.  */
#ifndef YYTOKENTYPE
# define YYTOKENTYPE
   /* Put the tokens into the symbol table, so that GDB and other debuggers
      know about them.  */
   enum mimetypes_yytokentype {
     IDENT = 258,
     IDENT_L = 259,
     STRING = 260,
     EOL = 261,
     BOGUS = 262
   };
#endif
#define IDENT 258
#define IDENT_L 259
#define STRING 260
#define EOL 261
#define BOGUS 262




/* Copy the first part of user declarations.  */
#line 1 "mimetypes.y"

/* GNU Mailutils -- a suite of utilities for electronic mail
   Copyright (C) 2005 Free Software Foundation, Inc.

   GNU Mailutils is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   GNU Mailutils is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GNU Mailutils; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <mimeview.h>
#include <mimetypes-decl.h>
  
static void
mimetypes_yyprint (FILE *output, unsigned short toknum, YYSTYPE val)
{
  switch (toknum)
    {
    case IDENT:
    case IDENT_L:
    case STRING:
      fprintf (output, "[%lu] %s", (unsigned long) val.string.len,
             val.string.ptr);
      break;

    case EOL:
    default:
      break;
    }
}

#define YYPRINT mimetypes_yyprint

static list_t arg_list; /* For error recovery */

#define L_OR  0
#define L_AND 1

enum node_type
  {
    functional_node,
    binary_node,
    negation_node,
    suffix_node
  };

union argument
{
  struct mimetypes_string *string;
  unsigned number;
  int c;
};

typedef int (*builtin_t) (union argument *args);

struct node
{
  enum node_type type;
  union
  {
    struct
    {
      builtin_t fun;
      union argument *args;
    } function;
    struct node *arg;
    struct
    {
      int op;
      struct node *arg1;
      struct node *arg2;
    } bin; 
    struct mimetypes_string suffix;
  } v;
};

static struct node *make_binary_node (int op,
                              struct node *left, struct node *rigth);
static struct node *make_negation_node (struct node *p);

static struct node *make_suffix_node (struct mimetypes_string *suffix);
static struct node *make_functional_node (char *ident, list_t list);

static int eval_rule (struct node *root);

struct rule_tab
{
  char *type;
  struct node *node;
};

static list_t rule_list;



/* Enabling traces.  */
#ifndef YYDEBUG
# define YYDEBUG 1
#endif

/* Enabling verbose error messages.  */
#ifdef YYERROR_VERBOSE
# undef YYERROR_VERBOSE
# define YYERROR_VERBOSE 1
#else
# define YYERROR_VERBOSE 0
#endif

#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
#line 119 "mimetypes.y"
typedef union YYSTYPE {
  struct mimetypes_string string;
  list_t list;
  int result;
  struct node *node;
} YYSTYPE;
/* Line 191 of yacc.c.  */
#line 203 "y.tab.c"
# define mimetypes_yystype YYSTYPE /* obsolescent; will be withdrawn */
# define YYSTYPE_IS_DECLARED 1
# define YYSTYPE_IS_TRIVIAL 1
#endif



/* Copy the second part of user declarations.  */


/* Line 214 of yacc.c.  */
#line 215 "y.tab.c"

#if ! defined (mimetypes_yyoverflow) || YYERROR_VERBOSE

/* The parser invokes alloca or malloc; define the necessary symbols.  */

# if YYSTACK_USE_ALLOCA
#  define YYSTACK_ALLOC alloca
# else
#  ifndef YYSTACK_USE_ALLOCA
#   if defined (alloca) || defined (_ALLOCA_H)
#    define YYSTACK_ALLOC alloca
#   else
#    ifdef __GNUC__
#     define YYSTACK_ALLOC __builtin_alloca
#    endif
#   endif
#  endif
# endif

# ifdef YYSTACK_ALLOC
   /* Pacify GCC's `empty if-body' warning. */
#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
# else
#  if defined (__STDC__) || defined (__cplusplus)
#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
#   define YYSIZE_T size_t
#  endif
#  define YYSTACK_ALLOC malloc
#  define YYSTACK_FREE free
# endif
#endif /* ! defined (mimetypes_yyoverflow) || YYERROR_VERBOSE */


#if (! defined (mimetypes_yyoverflow) \
     && (! defined (__cplusplus) \
       || (YYSTYPE_IS_TRIVIAL)))

/* A type that is properly aligned for any stack member.  */
union mimetypes_yyalloc
{
  short mimetypes_yyss;
  YYSTYPE mimetypes_yyvs;
  };

/* The size of the maximum gap between one aligned stack and the next.  */
# define YYSTACK_GAP_MAXIMUM (sizeof (union mimetypes_yyalloc) - 1)

/* The size of an array large to enough to hold all stacks, each with
   N elements.  */
# define YYSTACK_BYTES(N) \
     ((N) * (sizeof (short) + sizeof (YYSTYPE))                   \
      + YYSTACK_GAP_MAXIMUM)

/* Copy COUNT objects from FROM to TO.  The source and destination do
   not overlap.  */
# ifndef YYCOPY
#  if 1 < __GNUC__
#   define YYCOPY(To, From, Count) \
      __builtin_memcpy (To, From, (Count) * sizeof (*(From)))
#  else
#   define YYCOPY(To, From, Count)        \
      do                            \
      {                             \
        register YYSIZE_T mimetypes_yyi;        \
        for (mimetypes_yyi = 0; mimetypes_yyi < (Count); mimetypes_yyi++)     \
          (To)[mimetypes_yyi] = (From)[mimetypes_yyi];            \
      }                             \
      while (0)
#  endif
# endif

/* Relocate STACK from its old location to the new one.  The
   local variables YYSIZE and YYSTACKSIZE give the old and new number of
   elements in the stack, and YYPTR gives the new location of the
   stack.  Advance YYPTR to a properly aligned location for the next
   stack.  */
# define YYSTACK_RELOCATE(Stack)                            \
    do                                                      \
      {                                                     \
      YYSIZE_T mimetypes_yynewbytes;                                    \
      YYCOPY (&mimetypes_yyptr->Stack, Stack, mimetypes_yysize);                    \
      Stack = &mimetypes_yyptr->Stack;                                  \
      mimetypes_yynewbytes = mimetypes_yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
      mimetypes_yyptr += mimetypes_yynewbytes / sizeof (*mimetypes_yyptr);                      \
      }                                                     \
    while (0)

#endif

#if defined (__STDC__) || defined (__cplusplus)
   typedef signed char mimetypes_yysigned_char;
#else
   typedef short mimetypes_yysigned_char;
#endif

/* YYFINAL -- State number of the termination state. */
#define YYFINAL  10
/* YYLAST -- Last index in YYTABLE.  */
#define YYLAST   54

/* YYNTOKENS -- Number of terminals. */
#define YYNTOKENS  14
/* YYNNTS -- Number of nonterminals. */
#define YYNNTS  12
/* YYNRULES -- Number of rules. */
#define YYNRULES  24
/* YYNRULES -- Number of states. */
#define YYNSTATES  38

/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
#define YYUNDEFTOK  2
#define YYMAXUTOK   262

#define YYTRANSLATE(YYX)                                    \
  ((unsigned int) (YYX) <= YYMAXUTOK ? mimetypes_yytranslate[YYX] : YYUNDEFTOK)

/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX.  */
static const unsigned char mimetypes_yytranslate[] =
{
       0,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,    11,     2,     2,     2,     2,     2,     2,
      12,    13,     2,     9,     8,     2,     2,    10,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     2,     2,     2,     2,
       2,     2,     2,     2,     2,     2,     1,     2,     3,     4,
       5,     6,     7
};

#if YYDEBUG
/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in
   YYRHS.  */
static const unsigned char mimetypes_yyprhs[] =
{
       0,     0,     3,     5,     7,    11,    12,    15,    18,    20,
      23,    27,    29,    32,    36,    40,    43,    47,    49,    51,
      53,    55,    59,    61,    65
};

/* YYRHS -- A `-1'-separated list of the rules' RHS. */
static const mimetypes_yysigned_char mimetypes_yyrhs[] =
{
      15,     0,    -1,    16,    -1,    17,    -1,    16,    18,    17,
      -1,    -1,    19,    20,    -1,     1,    18,    -1,     6,    -1,
      18,     6,    -1,     3,    10,     3,    -1,    21,    -1,    20,
      20,    -1,    20,     8,    20,    -1,    20,     9,    20,    -1,
      11,    21,    -1,    12,    20,    13,    -1,    22,    -1,    23,
      -1,     5,    -1,     3,    -1,     4,    24,    13,    -1,    25,
      -1,    24,     8,    25,    -1,    22,    -1
};

/* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
static const unsigned char mimetypes_yyrline[] =
{
       0,   128,   128,   131,   132,   135,   136,   145,   154,   155,
     158,   164,   165,   169,   173,   179,   183,   187,   191,   194,
     195,   198,   207,   213,   220
};
#endif

#if YYDEBUG || YYERROR_VERBOSE
/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
   First, the terminals, then, starting at YYNTOKENS, nonterminals. */
static const char *const mimetypes_yytname[] =
{
  "$end", "error", "$undefined", "IDENT", "IDENT_L", "STRING", "EOL", 
  "BOGUS", "','", "'+'", "'/'", "'!'", "'('", "')'", "$accept", "input", 
  "list", "rule_line", "eol", "type", "rule", "stmt", "string", 
  "function", "arglist", "arg", 0
};
#endif

# ifdef YYPRINT
/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
   token YYLEX-NUM.  */
static const unsigned short mimetypes_yytoknum[] =
{
       0,   256,   257,   258,   259,   260,   261,   262,    44,    43,
      47,    33,    40,    41
};
# endif

/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
static const unsigned char mimetypes_yyr1[] =
{
       0,    14,    15,    16,    16,    17,    17,    17,    18,    18,
      19,    20,    20,    20,    20,    21,    21,    21,    21,    22,
      22,    23,    24,    24,    25
};

/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
static const unsigned char mimetypes_yyr2[] =
{
       0,     2,     1,     1,     3,     0,     2,     2,     1,     2,
       3,     1,     2,     3,     3,     2,     3,     1,     1,     1,
       1,     3,     1,     3,     1
};

/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
   STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
   means the default is an error.  */
static const unsigned char mimetypes_yydefact[] =
{
       0,     0,     0,     0,     2,     3,     0,     8,     7,     0,
       1,     0,    20,     0,    19,     0,     0,     6,    11,    17,
      18,     9,    10,     4,    24,     0,    22,    15,     0,     0,
       0,    12,     0,    21,    16,    13,    14,    23
};

/* YYDEFGOTO[NTERM-NUM]. */
static const mimetypes_yysigned_char mimetypes_yydefgoto[] =
{
      -1,     3,     4,     5,     8,     6,    31,    18,    19,    20,
      25,    26
};

/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
   STATE-NUM.  */
#define YYPACT_NINF -13
static const mimetypes_yysigned_char mimetypes_yypact[] =
{
      15,    -4,    -3,    17,    -4,   -13,    35,   -13,    16,     3,
     -13,    48,   -13,    47,   -13,    35,    35,    22,   -13,   -13,
     -13,   -13,   -13,   -13,   -13,     6,   -13,   -13,     0,    35,
      35,    32,    47,   -13,   -13,    32,    35,   -13
};

/* YYPGOTO[NTERM-NUM].  */
static const mimetypes_yysigned_char mimetypes_yypgoto[] =
{
     -13,   -13,   -13,    18,    24,   -13,    -6,    27,   -12,   -13,
     -13,    13
};

/* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
   positive, shift that token.  If negative, reduce the rule which
   number is the opposite.  If zero, do what YYDEFACT says.
   If YYTABLE_NINF, syntax error.  */
#define YYTABLE_NINF -6
static const mimetypes_yysigned_char mimetypes_yytable[] =
{
      17,    24,     7,    12,    13,    14,    22,     9,    29,    30,
      28,    15,    16,    34,    32,    -5,     1,    10,     2,    33,
      24,    -5,    21,    35,    36,    12,    13,    14,    11,    23,
      29,    30,     0,    15,    16,    12,    13,    14,    12,    13,
      14,    30,    27,    15,    16,    37,    15,    16,    -5,     1,
      12,     2,    14,     0,    21
};

static const mimetypes_yysigned_char mimetypes_yycheck[] =
{
       6,    13,     6,     3,     4,     5,     3,    10,     8,     9,
      16,    11,    12,    13,     8,     0,     1,     0,     3,    13,
      32,     6,     6,    29,    30,     3,     4,     5,     4,    11,
       8,     9,    -1,    11,    12,     3,     4,     5,     3,     4,
       5,     9,    15,    11,    12,    32,    11,    12,     0,     1,
       3,     3,     5,    -1,     6
};

/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
   symbol of state STATE-NUM.  */
static const unsigned char mimetypes_yystos[] =
{
       0,     1,     3,    15,    16,    17,    19,     6,    18,    10,
       0,    18,     3,     4,     5,    11,    12,    20,    21,    22,
      23,     6,     3,    17,    22,    24,    25,    21,    20,     8,
       9,    20,     8,    13,    13,    20,    20,    25
};

#if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
# define YYSIZE_T __SIZE_TYPE__
#endif
#if ! defined (YYSIZE_T) && defined (size_t)
# define YYSIZE_T size_t
#endif
#if ! defined (YYSIZE_T)
# if defined (__STDC__) || defined (__cplusplus)
#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
#  define YYSIZE_T size_t
# endif
#endif
#if ! defined (YYSIZE_T)
# define YYSIZE_T unsigned int
#endif

#define mimetypes_yyerrok           (mimetypes_yyerrstatus = 0)
#define mimetypes_yyclearin   (mimetypes_yychar = YYEMPTY)
#define YYEMPTY         (-2)
#define YYEOF           0

#define YYACCEPT  goto mimetypes_yyacceptlab
#define YYABORT         goto mimetypes_yyabortlab
#define YYERROR         goto mimetypes_yyerrlab1

/* Like YYERROR except do call mimetypes_yyerror.  This remains here temporarily
   to ease the transition to the new meaning of YYERROR, for GCC.
   Once GCC version 2 has supplanted version 1, this can go.  */

#define YYFAIL          goto mimetypes_yyerrlab

#define YYRECOVERING()  (!!mimetypes_yyerrstatus)

#define YYBACKUP(Token, Value)                              \
do                                              \
  if (mimetypes_yychar == YYEMPTY && mimetypes_yylen == 1)                    \
    {                                           \
      mimetypes_yychar = (Token);                                 \
      mimetypes_yylval = (Value);                                 \
      mimetypes_yytoken = YYTRANSLATE (mimetypes_yychar);                     \
      YYPOPSTACK;                               \
      goto mimetypes_yybackup;                                    \
    }                                           \
  else                                                \
    {                                                 \
      mimetypes_yyerror ("syntax error: cannot back up");\
      YYERROR;                                        \
    }                                           \
while (0)

#define YYTERROR  1
#define YYERRCODE 256

/* YYLLOC_DEFAULT -- Compute the default location (before the actions
   are run).  */

#ifndef YYLLOC_DEFAULT
# define YYLLOC_DEFAULT(Current, Rhs, N)         \
  Current.first_line   = Rhs[1].first_line;      \
  Current.first_column = Rhs[1].first_column;    \
  Current.last_line    = Rhs[N].last_line;       \
  Current.last_column  = Rhs[N].last_column;
#endif

/* YYLEX -- calling `mimetypes_yylex' with the right arguments.  */

#ifdef YYLEX_PARAM
# define YYLEX mimetypes_yylex (YYLEX_PARAM)
#else
# define YYLEX mimetypes_yylex ()
#endif

/* Enable debugging if requested.  */
#if YYDEBUG

# ifndef YYFPRINTF
#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
#  define YYFPRINTF fprintf
# endif

# define YYDPRINTF(Args)                  \
do {                                \
  if (mimetypes_yydebug)                              \
    YYFPRINTF Args;                       \
} while (0)

# define YYDSYMPRINT(Args)                \
do {                                \
  if (mimetypes_yydebug)                              \
    mimetypes_yysymprint Args;                        \
} while (0)

# define YYDSYMPRINTF(Title, Token, Value, Location)        \
do {                                            \
  if (mimetypes_yydebug)                                          \
    {                                           \
      YYFPRINTF (stderr, "%s ", Title);                     \
      mimetypes_yysymprint (stderr,                               \
                  Token, Value);    \
      YYFPRINTF (stderr, "\n");                             \
    }                                           \
} while (0)

/*------------------------------------------------------------------.
| mimetypes_yy_stack_print -- Print the state stack from its BOTTOM up to its |
| TOP (cinluded).                                                   |
`------------------------------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
mimetypes_yy_stack_print (short *bottom, short *top)
#else
static void
mimetypes_yy_stack_print (bottom, top)
    short *bottom;
    short *top;
#endif
{
  YYFPRINTF (stderr, "Stack now");
  for (/* Nothing. */; bottom <= top; ++bottom)
    YYFPRINTF (stderr, " %d", *bottom);
  YYFPRINTF (stderr, "\n");
}

# define YY_STACK_PRINT(Bottom, Top)                        \
do {                                            \
  if (mimetypes_yydebug)                                          \
    mimetypes_yy_stack_print ((Bottom), (Top));                   \
} while (0)


/*------------------------------------------------.
| Report that the YYRULE is going to be reduced.  |
`------------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
mimetypes_yy_reduce_print (int mimetypes_yyrule)
#else
static void
mimetypes_yy_reduce_print (mimetypes_yyrule)
    int mimetypes_yyrule;
#endif
{
  int mimetypes_yyi;
  unsigned int mimetypes_yylineno = mimetypes_yyrline[mimetypes_yyrule];
  YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
             mimetypes_yyrule - 1, mimetypes_yylineno);
  /* Print the symbols being reduced, and their result.  */
  for (mimetypes_yyi = mimetypes_yyprhs[mimetypes_yyrule]; 0 <= mimetypes_yyrhs[mimetypes_yyi]; mimetypes_yyi++)
    YYFPRINTF (stderr, "%s ", mimetypes_yytname [mimetypes_yyrhs[mimetypes_yyi]]);
  YYFPRINTF (stderr, "-> %s\n", mimetypes_yytname [mimetypes_yyr1[mimetypes_yyrule]]);
}

# define YY_REDUCE_PRINT(Rule)            \
do {                          \
  if (mimetypes_yydebug)                        \
    mimetypes_yy_reduce_print (Rule);           \
} while (0)

/* Nonzero means print parse trace.  It is left uninitialized so that
   multiple parsers can coexist.  */
int mimetypes_yydebug;
#else /* !YYDEBUG */
# define YYDPRINTF(Args)
# define YYDSYMPRINT(Args)
# define YYDSYMPRINTF(Title, Token, Value, Location)
# define YY_STACK_PRINT(Bottom, Top)
# define YY_REDUCE_PRINT(Rule)
#endif /* !YYDEBUG */


/* YYINITDEPTH -- initial size of the parser's stacks.  */
#ifndef     YYINITDEPTH
# define YYINITDEPTH 200
#endif

/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
   if the built-in stack extension method is used).

   Do not make this value too large; the results are undefined if
   SIZE_MAX < YYSTACK_BYTES (YYMAXDEPTH)
   evaluated with infinite-precision integer arithmetic.  */

#if YYMAXDEPTH == 0
# undef YYMAXDEPTH
#endif

#ifndef YYMAXDEPTH
# define YYMAXDEPTH 10000
#endif



#if YYERROR_VERBOSE

# ifndef mimetypes_yystrlen
#  if defined (__GLIBC__) && defined (_STRING_H)
#   define mimetypes_yystrlen strlen
#  else
/* Return the length of YYSTR.  */
static YYSIZE_T
#   if defined (__STDC__) || defined (__cplusplus)
mimetypes_yystrlen (const char *mimetypes_yystr)
#   else
mimetypes_yystrlen (mimetypes_yystr)
     const char *mimetypes_yystr;
#   endif
{
  register const char *mimetypes_yys = mimetypes_yystr;

  while (*mimetypes_yys++ != '\0')
    continue;

  return mimetypes_yys - mimetypes_yystr - 1;
}
#  endif
# endif

# ifndef mimetypes_yystpcpy
#  if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE)
#   define mimetypes_yystpcpy stpcpy
#  else
/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
   YYDEST.  */
static char *
#   if defined (__STDC__) || defined (__cplusplus)
mimetypes_yystpcpy (char *mimetypes_yydest, const char *mimetypes_yysrc)
#   else
mimetypes_yystpcpy (mimetypes_yydest, mimetypes_yysrc)
     char *mimetypes_yydest;
     const char *mimetypes_yysrc;
#   endif
{
  register char *mimetypes_yyd = mimetypes_yydest;
  register const char *mimetypes_yys = mimetypes_yysrc;

  while ((*mimetypes_yyd++ = *mimetypes_yys++) != '\0')
    continue;

  return mimetypes_yyd - 1;
}
#  endif
# endif

#endif /* !YYERROR_VERBOSE */



#if YYDEBUG
/*--------------------------------.
| Print this symbol on YYOUTPUT.  |
`--------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
mimetypes_yysymprint (FILE *mimetypes_yyoutput, int mimetypes_yytype, YYSTYPE *mimetypes_yyvaluep)
#else
static void
mimetypes_yysymprint (mimetypes_yyoutput, mimetypes_yytype, mimetypes_yyvaluep)
    FILE *mimetypes_yyoutput;
    int mimetypes_yytype;
    YYSTYPE *mimetypes_yyvaluep;
#endif
{
  /* Pacify ``unused variable'' warnings.  */
  (void) mimetypes_yyvaluep;

  if (mimetypes_yytype < YYNTOKENS)
    {
      YYFPRINTF (mimetypes_yyoutput, "token %s (", mimetypes_yytname[mimetypes_yytype]);
# ifdef YYPRINT
      YYPRINT (mimetypes_yyoutput, mimetypes_yytoknum[mimetypes_yytype], *mimetypes_yyvaluep);
# endif
    }
  else
    YYFPRINTF (mimetypes_yyoutput, "nterm %s (", mimetypes_yytname[mimetypes_yytype]);

  switch (mimetypes_yytype)
    {
      default:
        break;
    }
  YYFPRINTF (mimetypes_yyoutput, ")");
}

#endif /* ! YYDEBUG */
/*-----------------------------------------------.
| Release the memory associated to this symbol.  |
`-----------------------------------------------*/

#if defined (__STDC__) || defined (__cplusplus)
static void
mimetypes_yydestruct (int mimetypes_yytype, YYSTYPE *mimetypes_yyvaluep)
#else
static void
mimetypes_yydestruct (mimetypes_yytype, mimetypes_yyvaluep)
    int mimetypes_yytype;
    YYSTYPE *mimetypes_yyvaluep;
#endif
{
  /* Pacify ``unused variable'' warnings.  */
  (void) mimetypes_yyvaluep;

  switch (mimetypes_yytype)
    {

      default:
        break;
    }
}


/* Prevent warnings from -Wmissing-prototypes.  */

#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int mimetypes_yyparse (void *YYPARSE_PARAM);
# else
int mimetypes_yyparse ();
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int mimetypes_yyparse (void);
#else
int mimetypes_yyparse ();
#endif
#endif /* ! YYPARSE_PARAM */



/* The lookahead symbol.  */
int mimetypes_yychar;

/* The semantic value of the lookahead symbol.  */
YYSTYPE mimetypes_yylval;

/* Number of syntax errors so far.  */
int mimetypes_yynerrs;



/*----------.
| mimetypes_yyparse.  |
`----------*/

#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int mimetypes_yyparse (void *YYPARSE_PARAM)
# else
int mimetypes_yyparse (YYPARSE_PARAM)
  void *YYPARSE_PARAM;
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int
mimetypes_yyparse (void)
#else
int
mimetypes_yyparse ()

#endif
#endif
{
  
  register int mimetypes_yystate;
  register int mimetypes_yyn;
  int mimetypes_yyresult;
  /* Number of tokens to shift before error messages enabled.  */
  int mimetypes_yyerrstatus;
  /* Lookahead token as an internal (translated) token number.  */
  int mimetypes_yytoken = 0;

  /* Three stacks and their tools:
     `mimetypes_yyss': related to states,
     `mimetypes_yyvs': related to semantic values,
     `mimetypes_yyls': related to locations.

     Refer to the stacks thru separate pointers, to allow mimetypes_yyoverflow
     to reallocate them elsewhere.  */

  /* The state stack.  */
  short     mimetypes_yyssa[YYINITDEPTH];
  short *mimetypes_yyss = mimetypes_yyssa;
  register short *mimetypes_yyssp;

  /* The semantic value stack.  */
  YYSTYPE mimetypes_yyvsa[YYINITDEPTH];
  YYSTYPE *mimetypes_yyvs = mimetypes_yyvsa;
  register YYSTYPE *mimetypes_yyvsp;



#define YYPOPSTACK   (mimetypes_yyvsp--, mimetypes_yyssp--)

  YYSIZE_T mimetypes_yystacksize = YYINITDEPTH;

  /* The variables used to return semantic value and location from the
     action routines.  */
  YYSTYPE mimetypes_yyval;


  /* When reducing, the number of symbols on the RHS of the reduced
     rule.  */
  int mimetypes_yylen;

  YYDPRINTF ((stderr, "Starting parse\n"));

  mimetypes_yystate = 0;
  mimetypes_yyerrstatus = 0;
  mimetypes_yynerrs = 0;
  mimetypes_yychar = YYEMPTY;       /* Cause a token to be read.  */

  /* Initialize stack pointers.
     Waste one element of value and location stack
     so that they stay on the same level as the state stack.
     The wasted elements are never initialized.  */

  mimetypes_yyssp = mimetypes_yyss;
  mimetypes_yyvsp = mimetypes_yyvs;

  goto mimetypes_yysetstate;

/*------------------------------------------------------------.
| mimetypes_yynewstate -- Push a new state, which is found in mimetypes_yystate.  |
`------------------------------------------------------------*/
 mimetypes_yynewstate:
  /* In all cases, when you get here, the value and location stacks
     have just been pushed. so pushing a state here evens the stacks.
     */
  mimetypes_yyssp++;

 mimetypes_yysetstate:
  *mimetypes_yyssp = mimetypes_yystate;

  if (mimetypes_yyss + mimetypes_yystacksize - 1 <= mimetypes_yyssp)
    {
      /* Get the current used size of the three stacks, in elements.  */
      YYSIZE_T mimetypes_yysize = mimetypes_yyssp - mimetypes_yyss + 1;

#ifdef mimetypes_yyoverflow
      {
      /* Give user a chance to reallocate the stack. Use copies of
         these so that the &'s don't force the real ones into
         memory.  */
      YYSTYPE *mimetypes_yyvs1 = mimetypes_yyvs;
      short *mimetypes_yyss1 = mimetypes_yyss;


      /* Each stack pointer address is followed by the size of the
         data in use in that stack, in bytes.  This used to be a
         conditional around just the two extra args, but that might
         be undefined if mimetypes_yyoverflow is a macro.  */
      mimetypes_yyoverflow ("parser stack overflow",
                &mimetypes_yyss1, mimetypes_yysize * sizeof (*mimetypes_yyssp),
                &mimetypes_yyvs1, mimetypes_yysize * sizeof (*mimetypes_yyvsp),

                &mimetypes_yystacksize);

      mimetypes_yyss = mimetypes_yyss1;
      mimetypes_yyvs = mimetypes_yyvs1;
      }
#else /* no mimetypes_yyoverflow */
# ifndef YYSTACK_RELOCATE
      goto mimetypes_yyoverflowlab;
# else
      /* Extend the stack our own way.  */
      if (YYMAXDEPTH <= mimetypes_yystacksize)
      goto mimetypes_yyoverflowlab;
      mimetypes_yystacksize *= 2;
      if (YYMAXDEPTH < mimetypes_yystacksize)
      mimetypes_yystacksize = YYMAXDEPTH;

      {
      short *mimetypes_yyss1 = mimetypes_yyss;
      union mimetypes_yyalloc *mimetypes_yyptr =
        (union mimetypes_yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (mimetypes_yystacksize));
      if (! mimetypes_yyptr)
        goto mimetypes_yyoverflowlab;
      YYSTACK_RELOCATE (mimetypes_yyss);
      YYSTACK_RELOCATE (mimetypes_yyvs);

#  undef YYSTACK_RELOCATE
      if (mimetypes_yyss1 != mimetypes_yyssa)
        YYSTACK_FREE (mimetypes_yyss1);
      }
# endif
#endif /* no mimetypes_yyoverflow */

      mimetypes_yyssp = mimetypes_yyss + mimetypes_yysize - 1;
      mimetypes_yyvsp = mimetypes_yyvs + mimetypes_yysize - 1;


      YYDPRINTF ((stderr, "Stack size increased to %lu\n",
              (unsigned long int) mimetypes_yystacksize));

      if (mimetypes_yyss + mimetypes_yystacksize - 1 <= mimetypes_yyssp)
      YYABORT;
    }

  YYDPRINTF ((stderr, "Entering state %d\n", mimetypes_yystate));

  goto mimetypes_yybackup;

/*-----------.
| mimetypes_yybackup.  |
`-----------*/
mimetypes_yybackup:

/* Do appropriate processing given the current state.  */
/* Read a lookahead token if we need one and don't already have one.  */
/* mimetypes_yyresume: */

  /* First try to decide what to do without reference to lookahead token.  */

  mimetypes_yyn = mimetypes_yypact[mimetypes_yystate];
  if (mimetypes_yyn == YYPACT_NINF)
    goto mimetypes_yydefault;

  /* Not known => get a lookahead token if don't already have one.  */

  /* YYCHAR is either YYEMPTY or YYEOF or a valid lookahead symbol.  */
  if (mimetypes_yychar == YYEMPTY)
    {
      YYDPRINTF ((stderr, "Reading a token: "));
      mimetypes_yychar = YYLEX;
    }

  if (mimetypes_yychar <= YYEOF)
    {
      mimetypes_yychar = mimetypes_yytoken = YYEOF;
      YYDPRINTF ((stderr, "Now at end of input.\n"));
    }
  else
    {
      mimetypes_yytoken = YYTRANSLATE (mimetypes_yychar);
      YYDSYMPRINTF ("Next token is", mimetypes_yytoken, &mimetypes_yylval, &mimetypes_yylloc);
    }

  /* If the proper action on seeing token YYTOKEN is to reduce or to
     detect an error, take that action.  */
  mimetypes_yyn += mimetypes_yytoken;
  if (mimetypes_yyn < 0 || YYLAST < mimetypes_yyn || mimetypes_yycheck[mimetypes_yyn] != mimetypes_yytoken)
    goto mimetypes_yydefault;
  mimetypes_yyn = mimetypes_yytable[mimetypes_yyn];
  if (mimetypes_yyn <= 0)
    {
      if (mimetypes_yyn == 0 || mimetypes_yyn == YYTABLE_NINF)
      goto mimetypes_yyerrlab;
      mimetypes_yyn = -mimetypes_yyn;
      goto mimetypes_yyreduce;
    }

  if (mimetypes_yyn == YYFINAL)
    YYACCEPT;

  /* Shift the lookahead token.  */
  YYDPRINTF ((stderr, "Shifting token %s, ", mimetypes_yytname[mimetypes_yytoken]));

  /* Discard the token being shifted unless it is eof.  */
  if (mimetypes_yychar != YYEOF)
    mimetypes_yychar = YYEMPTY;

  *++mimetypes_yyvsp = mimetypes_yylval;


  /* Count tokens shifted since error; after three, turn off error
     status.  */
  if (mimetypes_yyerrstatus)
    mimetypes_yyerrstatus--;

  mimetypes_yystate = mimetypes_yyn;
  goto mimetypes_yynewstate;


/*-----------------------------------------------------------.
| mimetypes_yydefault -- do the default action for the current state.  |
`-----------------------------------------------------------*/
mimetypes_yydefault:
  mimetypes_yyn = mimetypes_yydefact[mimetypes_yystate];
  if (mimetypes_yyn == 0)
    goto mimetypes_yyerrlab;
  goto mimetypes_yyreduce;


/*-----------------------------.
| mimetypes_yyreduce -- Do a reduction.  |
`-----------------------------*/
mimetypes_yyreduce:
  /* mimetypes_yyn is the number of a rule to reduce with.  */
  mimetypes_yylen = mimetypes_yyr2[mimetypes_yyn];

  /* If YYLEN is nonzero, implement the default value of the action:
     `$$ = $1'.

     Otherwise, the following line sets YYVAL to garbage.
     This behavior is undocumented and Bison
     users should not rely upon it.  Assigning to YYVAL
     unconditionally makes the parser a bit smaller, and it avoids a
     GCC warning that YYVAL may be used uninitialized.  */
  mimetypes_yyval = mimetypes_yyvsp[1-mimetypes_yylen];


  YY_REDUCE_PRINT (mimetypes_yyn);
  switch (mimetypes_yyn)
    {
        case 6:
#line 137 "mimetypes.y"
    {
           struct rule_tab *p = mimetypes_malloc (sizeof (*p));
           if (!rule_list)
             list_create (&rule_list);
           p->type = mimetypes_yyvsp[-1].string.ptr;
           p->node = mimetypes_yyvsp[0].node;
           list_append (rule_list, p);
         }
    break;

  case 7:
#line 146 "mimetypes.y"
    {
           if (arg_list)
             list_destroy (&arg_list);
           arg_list = NULL;
           reset_lex ();
         }
    break;

  case 10:
#line 159 "mimetypes.y"
    {
           mimetypes_yyval.string = mimetypes_append_string2 (&mimetypes_yyvsp[-2].string, '/', &mimetypes_yyvsp[0].string);
         }
    break;

  case 12:
#line 166 "mimetypes.y"
    {
           mimetypes_yyval.node = make_binary_node (L_OR, mimetypes_yyvsp[-1].node, mimetypes_yyvsp[0].node);
         }
    break;

  case 13:
#line 170 "mimetypes.y"
    {
           mimetypes_yyval.node = make_binary_node (L_OR, mimetypes_yyvsp[-2].node, mimetypes_yyvsp[0].node);
         }
    break;

  case 14:
#line 174 "mimetypes.y"
    {
           mimetypes_yyval.node = make_binary_node (L_AND, mimetypes_yyvsp[-2].node, mimetypes_yyvsp[0].node);
         }
    break;

  case 15:
#line 180 "mimetypes.y"
    {
           mimetypes_yyval.node = make_negation_node (mimetypes_yyvsp[0].node);
         }
    break;

  case 16:
#line 184 "mimetypes.y"
    {
           mimetypes_yyval.node = mimetypes_yyvsp[-1].node;
         }
    break;

  case 17:
#line 188 "mimetypes.y"
    {
           mimetypes_yyval.node = make_suffix_node (&mimetypes_yyvsp[0].string);
         }
    break;

  case 21:
#line 199 "mimetypes.y"
    {
           reset_lex ();
           mimetypes_yyval.node = make_functional_node (mimetypes_yyvsp[-2].string.ptr, mimetypes_yyvsp[-1].list);
           if (!mimetypes_yyval.node)
             YYERROR;
         }
    break;

  case 22:
#line 208 "mimetypes.y"
    {
           list_create (&arg_list);
           mimetypes_yyval.list = arg_list;
           list_append (mimetypes_yyval.list, mimetypes_string_dup (&mimetypes_yyvsp[0].string));
         }
    break;

  case 23:
#line 214 "mimetypes.y"
    {
           list_append (mimetypes_yyvsp[-2].list, mimetypes_string_dup (&mimetypes_yyvsp[0].string));
           mimetypes_yyval.list = mimetypes_yyvsp[-2].list;
         }
    break;


    }

/* Line 991 of yacc.c.  */
#line 1212 "y.tab.c"

  mimetypes_yyvsp -= mimetypes_yylen;
  mimetypes_yyssp -= mimetypes_yylen;


  YY_STACK_PRINT (mimetypes_yyss, mimetypes_yyssp);

  *++mimetypes_yyvsp = mimetypes_yyval;


  /* Now `shift' the result of the reduction.  Determine what state
     that goes to, based on the state we popped back to and the rule
     number reduced by.  */

  mimetypes_yyn = mimetypes_yyr1[mimetypes_yyn];

  mimetypes_yystate = mimetypes_yypgoto[mimetypes_yyn - YYNTOKENS] + *mimetypes_yyssp;
  if (0 <= mimetypes_yystate && mimetypes_yystate <= YYLAST && mimetypes_yycheck[mimetypes_yystate] == *mimetypes_yyssp)
    mimetypes_yystate = mimetypes_yytable[mimetypes_yystate];
  else
    mimetypes_yystate = mimetypes_yydefgoto[mimetypes_yyn - YYNTOKENS];

  goto mimetypes_yynewstate;


/*------------------------------------.
| mimetypes_yyerrlab -- here on detecting error |
`------------------------------------*/
mimetypes_yyerrlab:
  /* If not already recovering from an error, report this error.  */
  if (!mimetypes_yyerrstatus)
    {
      ++mimetypes_yynerrs;
#if YYERROR_VERBOSE
      mimetypes_yyn = mimetypes_yypact[mimetypes_yystate];

      if (YYPACT_NINF < mimetypes_yyn && mimetypes_yyn < YYLAST)
      {
        YYSIZE_T mimetypes_yysize = 0;
        int mimetypes_yytype = YYTRANSLATE (mimetypes_yychar);
        char *mimetypes_yymsg;
        int mimetypes_yyx, mimetypes_yycount;

        mimetypes_yycount = 0;
        /* Start YYX at -YYN if negative to avoid negative indexes in
           YYCHECK.  */
        for (mimetypes_yyx = mimetypes_yyn < 0 ? -mimetypes_yyn : 0;
             mimetypes_yyx < (int) (sizeof (mimetypes_yytname) / sizeof (char *)); mimetypes_yyx++)
          if (mimetypes_yycheck[mimetypes_yyx + mimetypes_yyn] == mimetypes_yyx && mimetypes_yyx != YYTERROR)
            mimetypes_yysize += mimetypes_yystrlen (mimetypes_yytname[mimetypes_yyx]) + 15, mimetypes_yycount++;
        mimetypes_yysize += mimetypes_yystrlen ("syntax error, unexpected ") + 1;
        mimetypes_yysize += mimetypes_yystrlen (mimetypes_yytname[mimetypes_yytype]);
        mimetypes_yymsg = (char *) YYSTACK_ALLOC (mimetypes_yysize);
        if (mimetypes_yymsg != 0)
          {
            char *mimetypes_yyp = mimetypes_yystpcpy (mimetypes_yymsg, "syntax error, unexpected ");
            mimetypes_yyp = mimetypes_yystpcpy (mimetypes_yyp, mimetypes_yytname[mimetypes_yytype]);

            if (mimetypes_yycount < 5)
            {
              mimetypes_yycount = 0;
              for (mimetypes_yyx = mimetypes_yyn < 0 ? -mimetypes_yyn : 0;
                   mimetypes_yyx < (int) (sizeof (mimetypes_yytname) / sizeof (char *));
                   mimetypes_yyx++)
                if (mimetypes_yycheck[mimetypes_yyx + mimetypes_yyn] == mimetypes_yyx && mimetypes_yyx != YYTERROR)
                  {
                  const char *mimetypes_yyq = ! mimetypes_yycount ? ", expecting " : " or ";
                  mimetypes_yyp = mimetypes_yystpcpy (mimetypes_yyp, mimetypes_yyq);
                  mimetypes_yyp = mimetypes_yystpcpy (mimetypes_yyp, mimetypes_yytname[mimetypes_yyx]);
                  mimetypes_yycount++;
                  }
            }
            mimetypes_yyerror (mimetypes_yymsg);
            YYSTACK_FREE (mimetypes_yymsg);
          }
        else
          mimetypes_yyerror ("syntax error; also virtual memory exhausted");
      }
      else
#endif /* YYERROR_VERBOSE */
      mimetypes_yyerror ("syntax error");
    }



  if (mimetypes_yyerrstatus == 3)
    {
      /* If just tried and failed to reuse lookahead token after an
       error, discard it.  */

      /* Return failure if at end of input.  */
      if (mimetypes_yychar == YYEOF)
        {
        /* Pop the error token.  */
          YYPOPSTACK;
        /* Pop the rest of the stack.  */
        while (mimetypes_yyss < mimetypes_yyssp)
          {
            YYDSYMPRINTF ("Error: popping", mimetypes_yystos[*mimetypes_yyssp], mimetypes_yyvsp, mimetypes_yylsp);
            mimetypes_yydestruct (mimetypes_yystos[*mimetypes_yyssp], mimetypes_yyvsp);
            YYPOPSTACK;
          }
        YYABORT;
        }

      YYDSYMPRINTF ("Error: discarding", mimetypes_yytoken, &mimetypes_yylval, &mimetypes_yylloc);
      mimetypes_yydestruct (mimetypes_yytoken, &mimetypes_yylval);
      mimetypes_yychar = YYEMPTY;

    }

  /* Else will try to reuse lookahead token after shifting the error
     token.  */
  goto mimetypes_yyerrlab2;


/*----------------------------------------------------.
| mimetypes_yyerrlab1 -- error raised explicitly by an action.  |
`----------------------------------------------------*/
mimetypes_yyerrlab1:

  /* Suppress GCC warning that mimetypes_yyerrlab1 is unused when no action
     invokes YYERROR.  */
#if defined (__GNUC_MINOR__) && 2093 <= (__GNUC__ * 1000 + __GNUC_MINOR__)
  __attribute__ ((__unused__))
#endif


  goto mimetypes_yyerrlab2;


/*---------------------------------------------------------------.
| mimetypes_yyerrlab2 -- pop states until the error token can be shifted.  |
`---------------------------------------------------------------*/
mimetypes_yyerrlab2:
  mimetypes_yyerrstatus = 3;  /* Each real token shifted decrements this.  */

  for (;;)
    {
      mimetypes_yyn = mimetypes_yypact[mimetypes_yystate];
      if (mimetypes_yyn != YYPACT_NINF)
      {
        mimetypes_yyn += YYTERROR;
        if (0 <= mimetypes_yyn && mimetypes_yyn <= YYLAST && mimetypes_yycheck[mimetypes_yyn] == YYTERROR)
          {
            mimetypes_yyn = mimetypes_yytable[mimetypes_yyn];
            if (0 < mimetypes_yyn)
            break;
          }
      }

      /* Pop the current state because it cannot handle the error token.  */
      if (mimetypes_yyssp == mimetypes_yyss)
      YYABORT;

      YYDSYMPRINTF ("Error: popping", mimetypes_yystos[*mimetypes_yyssp], mimetypes_yyvsp, mimetypes_yylsp);
      mimetypes_yydestruct (mimetypes_yystos[mimetypes_yystate], mimetypes_yyvsp);
      mimetypes_yyvsp--;
      mimetypes_yystate = *--mimetypes_yyssp;

      YY_STACK_PRINT (mimetypes_yyss, mimetypes_yyssp);
    }

  if (mimetypes_yyn == YYFINAL)
    YYACCEPT;

  YYDPRINTF ((stderr, "Shifting error token, "));

  *++mimetypes_yyvsp = mimetypes_yylval;


  mimetypes_yystate = mimetypes_yyn;
  goto mimetypes_yynewstate;


/*-------------------------------------.
| mimetypes_yyacceptlab -- YYACCEPT comes here.  |
`-------------------------------------*/
mimetypes_yyacceptlab:
  mimetypes_yyresult = 0;
  goto mimetypes_yyreturn;

/*-----------------------------------.
| mimetypes_yyabortlab -- YYABORT comes here.  |
`-----------------------------------*/
mimetypes_yyabortlab:
  mimetypes_yyresult = 1;
  goto mimetypes_yyreturn;

#ifndef mimetypes_yyoverflow
/*----------------------------------------------.
| mimetypes_yyoverflowlab -- parser overflow comes here.  |
`----------------------------------------------*/
mimetypes_yyoverflowlab:
  mimetypes_yyerror ("parser stack overflow");
  mimetypes_yyresult = 2;
  /* Fall through.  */
#endif

mimetypes_yyreturn:
#ifndef mimetypes_yyoverflow
  if (mimetypes_yyss != mimetypes_yyssa)
    YYSTACK_FREE (mimetypes_yyss);
#endif
  return mimetypes_yyresult;
}


#line 223 "mimetypes.y"


int
mimetypes_parse (const char *name)
{
  int rc;
  if (mimetypes_open (name))
    return 1;
  rc = mimetypes_yyparse ();
  mimetypes_close ();
  return rule_list == NULL;
}
  
void
mimetypes_gram_debug (int level)
{
  mimetypes_yydebug = level;
}


static struct node *
make_node (enum node_type type)
{
  struct node *p = mimetypes_malloc (sizeof *p);
  p->type = type;
  return p;
}

static struct node *
make_binary_node (int op, struct node *left, struct node *right)
{
  struct node *node = make_node (binary_node);

  node->v.bin.op = op;
  node->v.bin.arg1 = left;
  node->v.bin.arg2 = right;
  return node;
}

struct node *
make_negation_node (struct node *p)
{
  struct node *node = make_node (negation_node);
  node->v.arg = p;
  return node;
}

struct node *
make_suffix_node (struct mimetypes_string *suffix)
{
  struct node *node = make_node (suffix_node);
  node->v.suffix = *suffix;
  return node;
}

struct builtin_tab
{
  char *name;
  char *args;
  builtin_t handler;
};

/*        match("pattern")
            Pattern match on filename
*/
static int
b_match (union argument *args)
{
  return fnmatch (args[0].string->ptr, mimeview_file, 0) == 0;
}

/*       ascii(offset,length)
            True if bytes are valid printable ASCII (CR, NL, TAB,
            BS, 32-126)
*/
static int
b_ascii (union argument *args)
{
  int i;
  if (fseek (mimeview_fp, args[0].number, SEEK_SET) == -1)
    {
      mu_error ("fseek: %s", mu_strerror (errno));
      return 0;
    }

  for (i = 0; i < args[1].number; i++)
    {
      int c = getc (mimeview_fp);
      if (c == EOF)
      break;
      if (!isascii (c))
      return 0;
    }
      
  return 1;
}

/*       printable(offset,length)
            True if bytes are printable 8-bit chars (CR, NL, TAB,
            BS, 32-126, 128-254)
*/
#define ISPRINT(c) ((c) &&\
                    (strchr ("\n\r\t\b",c) \
                     || (32<=(c) && (c)<=126) \
                     || (128<=(c) && (c)<=254)))
static int
b_printable (union argument *args)
{
  int i;

  if (fseek (mimeview_fp, args[0].number, SEEK_SET) == -1)
    {
      mu_error ("fseek: %s", mu_strerror (errno));
      return 0;
    }

  for (i = 0; i < args[1].number; i++)
    {
      int c = getc (mimeview_fp);
      if (c == EOF)
      break;
      if (!ISPRINT ((unsigned)c))
      return 0;
    }
  return 1;
}

/*        string(offset,"string")
            True if bytes are identical to string
*/
static int
b_string (union argument *args)
{
  struct mimetypes_string *str = args[1].string;
  int i;
  
  if (fseek (mimeview_fp, args[0].number, SEEK_SET) == -1)
    {
      mu_error ("fseek: %s", mu_strerror (errno));
      return 0;
    }

  for (i = 0; i < str->len; i++)
    {
      int c = getc (mimeview_fp);
      if (c == EOF || c != str->ptr[i])
      return 0;
    }
  return 1;
}

/*        istring(offset,"string")
            True if a case-insensitive comparison of the bytes is
            identical
*/
static int
b_istring (union argument *args)
{
  int i;
  struct mimetypes_string *str = args[1].string;
  
  if (fseek (mimeview_fp, args[0].number, SEEK_SET) == -1)
    {
      mu_error ("fseek: %s", mu_strerror (errno));
      return 0;
    }

  for (i = 0; i < str->len; i++)
    {
      int c = getc (mimeview_fp);
      if (c == EOF || tolower (c) != tolower (str->ptr[i]))
      return 0;
    }
  return 1;
}

/*       char(offset,value)
            True if byte is identical
*/
static int
b_char (union argument *args)
{
  if (fseek (mimeview_fp, args[0].number, SEEK_SET) == -1)
    {
      mu_error ("fseek: %s", mu_strerror (errno));
      return 0;
    }
  return getc (mimeview_fp) == args[1].number;
}

/*        short(offset,value)
            True if 16-bit integer is identical
        FIXME: Byte order  
*/
static int
b_short (union argument *args)
{
  unsigned short val;
  int rc;
  
  if (fseek (mimeview_fp, args[0].number, SEEK_SET) == -1)
    {
      mu_error ("fseek: %s", mu_strerror (errno));
      return 0;
    }
  rc = fread (&val, sizeof val, 1, mimeview_fp);

  if (rc == -1)
    {
      mu_error ("fread: %s", mu_strerror (errno));
      return 0;
    }
  else if (rc == 0)
    return 0;
  return val == args[1].number;
}

/*        int(offset,value)
            True if 32-bit integer is identical
          FIXME: Byte order
*/
static int
b_int (union argument *args)
{
  unsigned int val;
  int rc;
  
  if (fseek (mimeview_fp, args[0].number, SEEK_SET) == -1)
    {
      mu_error ("fseek: %s", mu_strerror (errno));
      return 0;
    }
  rc = fread (&val, sizeof val, 1, mimeview_fp);
  if (rc == -1)
    {
      mu_error ("fread: %s", mu_strerror (errno));
      return 0;
    }
  else if (rc == 0)
    return 0;
  return val == args[1].number;
}

/*        locale("string")
            True if current locale matches string
*/
static int
b_locale (union argument *args)
{
  abort (); /* FIXME */
  return 0;
}

/*        contains(offset,range,"string")
            True if the range contains the string
*/
static int
b_contains (union argument *args)
{
  int i, count;
  char *buf;
  struct mimetypes_string *str = args[2].string;

  if (fseek (mimeview_fp, args[0].number, SEEK_SET) == -1)
    {
      mu_error ("fseek: %s", mu_strerror (errno));
      return 0;
    }
  buf = xmalloc (args[1].number);
  count = fread (buf, 1, args[1].number, mimeview_fp);
  if (count == -1)
    {
      mu_error ("fread: %s", mu_strerror (errno));
    }
  else if (count > str->len)
    for (i = 0; i < count - str->len; i++)
      if (buf[i] == str->ptr[0] && memcmp (buf + i, str->ptr, str->len) == 0)
      {
        free (buf);
        return 1;
      }
  free (buf);
  return 0;
}

static struct builtin_tab builtin_tab[] = {
  { "match", "s", b_match },
  { "ascii", "dd", b_ascii },
  { "printable", "dd", b_printable },
  { "string", "ds", b_string },
  { "istring", "ds", b_istring },
  { "char", "dc", b_char },
  { "short", "dd", b_short },
  { "int", "dd", b_int },
  { "locale", "s", b_locale },
  { "contains", "dds", b_contains },
  { NULL }
};
  
struct node *
make_functional_node (char *ident, list_t list)
{
  size_t count, i;
  struct builtin_tab *p;
  struct node *node;
  union argument *args;
  iterator_t itr;
  
  for (p = builtin_tab; ; p++)
    {
      if (!p->name)
      {
        char *s;
        asprintf (&s, _("%s: unknown function"), ident);
        mimetypes_yyerror (s);
        free (s);
        return NULL;
      }

      if (strcmp (ident, p->name) == 0)
      break;
    }

  list_count (list, &count);
  i = strlen (p->args);

  if (count < i)
    {
      char *s;
      asprintf (&s, _("too few arguments in call to `%s'"), ident);
      mimetypes_yyerror (s);
      free (s);
      return NULL;
    }
  else if (count > i)
    {
      char *s;
      asprintf (&s, _("too many arguments in call to `%s'"), ident);
      mimetypes_yyerror (s);
      free (s);
      return NULL;
    }

  args = mimetypes_malloc (count * sizeof *args);
  
  list_get_iterator (list, &itr);
  for (i = 0, iterator_first (itr); !iterator_is_done (itr);
       iterator_next (itr), i++)
    {
      struct mimetypes_string *data;
      char *tmp;
      
      iterator_current (itr, (void **)&data);
      switch (p->args[i])
      {
      case 'd':
        args[i].number = strtoul (data->ptr, &tmp, 0);
        if (*tmp)
          goto err;
        break;
        
      case 's':
        args[i].string = data;
        break;
        
      case 'c':
        args[i].c = strtoul (data->ptr, &tmp, 0);
        if (*tmp)
          goto err;
        break;
        
      default:
        abort ();
      }
    }

  node = make_node (functional_node);
  node->v.function.fun = p->handler;
  node->v.function.args = args;
  return node;
  
 err:
  {
    char *s;
    asprintf (&s,
            _("argument %d has wrong type in call to `%s'"),
            i, ident);
    mimetypes_yyerror (s);
    free (s);
    return NULL;
  }
}

static int
check_suffix (char *suf)
{
  char *p = strrchr (mimeview_file, '.');
  if (!p)
    return 0;
  return strcmp (p+1, suf) == 0;
}

static int
eval_rule (struct node *root)
{
  int result;
  
  switch (root->type)
    {
    case functional_node:
      result = root->v.function.fun (root->v.function.args);
      break;
      
    case binary_node:
      result = eval_rule (root->v.bin.arg1);
      switch (root->v.bin.op)
      {
      case L_OR:
        if (!result)
          result |= eval_rule (root->v.bin.arg2);
        break;
        
      case L_AND:
        if (result)
          result &= eval_rule (root->v.bin.arg2);
        break;
        
      default:
        abort ();
      }
      break;
      
    case negation_node:
      result = !eval_rule (root->v.arg);
      break;
      
    case suffix_node:
      result = check_suffix (root->v.suffix.ptr);
      break;

    default:
      abort ();
    }
  return result;
}

static int
evaluate (void *item, void *data)
{
  struct rule_tab *p = item;
  char **ptype = data;
    
  if (eval_rule (p->node))
    {
      *ptype = p->type;
      return 1;
    }
  return 0;
}

const char *
get_file_type ()
{
  const char *type = NULL;
  list_do (rule_list, evaluate, &type);
  return type;
}
    


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