usr/src/lib/libshell/common/include/shlex.h

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1982-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                  David Korn <dgk@research.att.com>                   *
  18 *                                                                      *
  19 ***********************************************************************/
  20 #pragma prototyped
  21 #ifndef NOTSYM
  22 /*
  23  *      UNIX shell
  24  *      Written by David Korn
  25  *      These are the definitions for the lexical analyzer
  26  */
  27
  28 #include        <cdt.h>
  29 #include        "FEATURE/options"
  30 #include        "shnodes.h"
  31 #include        "shtable.h"
  32 #include        "lexstates.h"
  33
  34
  35 typedef struct  _shlex_
  36 {
  37         Shell_t         *sh;            /* pointer to the interpreter */
  38         struct argnod   *arg;           /* current word */
  39         struct ionod    *heredoc;       /* pending here document list */
  40         int             token;          /* current token number */
  41         int             lastline;       /* last line number */
  42         int             lasttok;        /* previous token number */
  43         int             digits;         /* numerical value with word token */
  44         int             nonstandard;    /* nonstandard construct in profile */
  45         char            aliasok;        /* on when alias is legal */
  46         char            assignok;       /* on when name=value is legal */
  47         char            inexec;         /* on when processing exec */
  48         char            intypeset;      /* on when processing typeset */
  49         char            comp_assign;    /* in compound assignment */
  50         char            comsub;         /* parsing command substitution */
  51         int             inlineno;       /* saved value of sh.inlineno */
  52         int             firstline;      /* saved value of sh.st.firstline */
  53 #if SHOPT_KIA
  54         Sfio_t          *kiafile;       /* kia output file */
  55         Sfio_t          *kiatmp;        /* kia reference file */
  56         unsigned long   script;         /* script entity number */
  57         unsigned long   fscript;        /* script file entity number */
  58         unsigned long   current;        /* current entity number */
  59         unsigned long   unknown;        /* <unknown> entity number */
  60         off_t           kiabegin;       /* offset of first entry */
  61         char            *scriptname;    /* name of script file */
  62         Dt_t            *entity_tree;   /* for entity ids */
  63 #endif /* SHOPT_KIA */
  64 #ifdef  _SHLEX_PRIVATE
  65         _SHLEX_PRIVATE
  66 #endif
  67 } Lex_t;
  68
  69 /* symbols for parsing */
  70 #define NL              '\n'
  71 #define NOTSYM          '!'
  72 #define SYMRES          0400            /* reserved word symbols */
  73 #define DOSYM           (SYMRES|01)
  74 #define FISYM           (SYMRES|02)
  75 #define ELIFSYM         (SYMRES|03)
  76 #define ELSESYM         (SYMRES|04)
  77 #define INSYM           (SYMRES|05)
  78 #define THENSYM         (SYMRES|06)
  79 #define DONESYM         (SYMRES|07)
  80 #define ESACSYM         (SYMRES|010)
  81 #define IFSYM           (SYMRES|011)
  82 #define FORSYM          (SYMRES|012)
  83 #define WHILESYM        (SYMRES|013)
  84 #define UNTILSYM        (SYMRES|014)
  85 #define CASESYM         (SYMRES|015)
  86 #define FUNCTSYM        (SYMRES|016)
  87 #define SELECTSYM       (SYMRES|017)
  88 #define TIMESYM         (SYMRES|020)
  89 #define NSPACESYM       (SYMRES|021)
  90
  91 #define SYMREP          01000           /* symbols for doubled characters */
  92 #define BREAKCASESYM    (SYMREP|';')
  93 #define ANDFSYM         (SYMREP|'&')
  94 #define ORFSYM          (SYMREP|'|')
  95 #define IOAPPSYM        (SYMREP|'>')
  96 #define IODOCSYM        (SYMREP|'<')
  97 #define EXPRSYM         (SYMREP|'(')
  98 #define BTESTSYM        (SYMREP|'[')
  99 #define ETESTSYM        (SYMREP|']')
 100
 101 #define SYMMASK         0170000
 102 #define SYMPIPE         010000  /* trailing '|' */
 103 #define SYMLPAR         020000  /* trailing LPAREN */
 104 #define SYMAMP          040000  /* trailing '&' */
 105 #define SYMGT           0100000 /* trailing '>' */
 106 #define SYMSEMI         0110000 /* trailing ';' */
 107 #define SYMSHARP        0120000 /* trailing '#' */
 108 #define IOSEEKSYM       (SYMSHARP|'<')
 109 #define IOMOV0SYM       (SYMAMP|'<')
 110 #define IOMOV1SYM       (SYMAMP|'>')
 111 #define FALLTHRUSYM     (SYMAMP|';')
 112 #define COOPSYM         (SYMAMP|'|')
 113 #define IORDWRSYM       (SYMGT|'<')
 114 #define IORDWRSYMT      (SYMSEMI|'<')
 115 #define IOCLOBSYM       (SYMPIPE|'>')
 116 #define IPROCSYM        (SYMLPAR|'<')
 117 #define OPROCSYM        (SYMLPAR|'>')
 118 #define EOFSYM          04000   /* end-of-file */
 119 #define TESTUNOP        04001
 120 #define TESTBINOP       04002
 121 #define LABLSYM         04003
 122 #define IOVNAME         04004
 123
 124 /* additional parser flag, others in <shell.h> */
 125 #define SH_EMPTY        04
 126 #define SH_NOIO         010
 127 #define SH_ASSIGN       020
 128 #define SH_FUNDEF       040
 129 #define SH_ARRAY        0100
 130 #define SH_SEMI         0200    /* semi-colon after NL ok */
 131
 132 #define SH_COMPASSIGN   010     /* allow compound assignments only */
 133
 134 #if 0
 135 typedef struct  _shlex_
 136 {
 137         struct shlex_t          _shlex;
 138 #ifdef  _SHLEX_PRIVATE
 139         _SHLEX_PRIVATE
 140 #endif
 141 } Lex_t;
 142
 143 #define shlex                   (((Lex_t*)(sh.lex_context))->_shlex)
 144 #endif
 145 extern const char               e_unexpected[];
 146 extern const char               e_unmatched[];
 147 extern const char               e_endoffile[];
 148 extern const char               e_newline[];
 149
 150 /* odd chars */
 151 #define LBRACE  '{'
 152 #define RBRACE  '}'
 153 #define LPAREN  '('
 154 #define RPAREN  ')'
 155 #define LBRACT  '['
 156 #define RBRACT  ']'
 157
 158 extern int              sh_lex(Lex_t*);
 159 extern Shnode_t         *sh_dolparen(Lex_t*);
 160 extern Lex_t            *sh_lexopen(Lex_t*, Shell_t*, int);
 161 extern void             sh_lexskip(Lex_t*,int,int,int);
 162 extern void             sh_syntax(Lex_t*);
 163 #if SHOPT_KIA
 164     extern int                  kiaclose(Lex_t *);
 165     extern unsigned long        kiaentity(Lex_t*, const char*,int,int,int,int,unsigned long,int,int,const char*);
 166 #endif /* SHOPT_KIA */
 167
 168
 169 #endif /* !NOTSYM */