1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1982-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 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 S_BREAK 22 #define S_BREAK 1 /* end of token */ 23 #define S_EOF 2 /* end of buffer */ 24 #define S_NL 3 /* new-line when not a token */ 25 #define S_RES 4 /* first character of reserved word */ 26 #define S_NAME 5 /* other identifier characters */ 27 #define S_REG 6 /* non-special characters */ 28 #define S_TILDE 7 /* first char is tilde */ 29 #define S_PUSH 8 30 #define S_POP 9 31 #define S_BRACT 10 32 #define S_LIT 11 /* literal quote character */ 33 #define S_NLTOK 12 /* new-line token */ 34 #define S_OP 13 /* operator character */ 35 #define S_PAT 14 /* pattern characters * and ? */ 36 #define S_EPAT 15 /* pattern char when followed by ( */ 37 #define S_EQ 16 /* assignment character */ 38 #define S_COM 17 /* comment character */ 39 #define S_MOD1 18 /* ${...} modifier character - old quoting */ 40 #define S_MOD2 19 /* ${...} modifier character - new quoting */ 41 #define S_ERR 20 /* invalid character in ${...} */ 42 #define S_SPC1 21 /* special prefix characters after $ */ 43 #define S_SPC2 22 /* special characters after $ */ 44 #define S_DIG 23 /* digit character after $*/ 45 #define S_ALP 24 /* alpahbetic character after $ */ 46 #define S_LBRA 25 /* left brace after $ */ 47 #define S_RBRA 26 /* right brace after $ */ 48 #define S_PAR 27 /* set for $( */ 49 #define S_ENDCH 28 /* macro expansion terminator */ 50 #define S_SLASH 29 /* / character terminates ~ expansion */ 51 #define S_COLON 30 /* for character : */ 52 #define S_LABEL 31 /* for goto label */ 53 #define S_EDOL 32 /* ends $identifier */ 54 #define S_BRACE 33 /* left brace */ 55 #define S_DOT 34 /* . char */ 56 #define S_META 35 /* | & ; < > inside ${...} reserved for future use */ 57 #define S_SPACE S_BREAK /* IFS space characters */ 58 #define S_DELIM S_RES /* IFS delimter characters */ 59 #define S_MBYTE S_NAME /* IFS first byte of multi-byte char */ 60 #define S_BLNK 36 /* space or tab */ 61 /* The following must be the highest numbered states */ 62 #define S_QUOTE 37 /* double quote character */ 63 #define S_GRAVE 38 /* old comsub character */ 64 #define S_ESC 39 /* escape character */ 65 #define S_DOL 40 /* $ subsitution character */ 66 #define S_ESC2 41 /* escape character inside '...' */ 67 68 /* These are the lexical state table names */ 69 #define ST_BEGIN 0 70 #define ST_NAME 1 71 #define ST_NORM 2 72 #define ST_LIT 3 73 #define ST_QUOTE 4 74 #define ST_NESTED 5 75 #define ST_DOL 6 76 #define ST_BRACE 7 77 #define ST_DOLNAME 8 78 #define ST_MACRO 9 79 #define ST_QNEST 10 80 #define ST_NONE 11 81 82 #include "FEATURE/locale" 83 84 #if _hdr_wchar 85 # include <wchar.h> 86 # if _hdr_wctype 87 # include <wctype.h> 88 # undef isalpha 89 # define isalpha(x) iswalpha(x) 90 # if defined(iswblank) || _lib_iswblank 91 # undef isblank 92 # define isblank(x) iswblank(x) 93 # else 94 # if _lib_wctype && _lib_iswctype 95 # define _lib_iswblank -1 96 # undef isblank 97 # define isblank(x) local_iswblank(x) 98 extern int local_iswblank(wchar_t); 99 # endif 100 # endif 101 # endif 102 #endif 103 #ifndef isblank 104 # define isblank(x) ((x)==' '||(x)=='\t') 105 #endif 106 107 #undef LEN 108 #if SHOPT_MULTIBYTE 109 static int NXT, LEN; 110 # define isaname(c) ((c)>0xff?isalpha(c): sh_lexstates[ST_NAME][(c)]==0) 111 # define isaletter(c) ((c)>0xff?isalpha(c): sh_lexstates[ST_DOL][(c)]==S_ALP && (c)!='.') 112 #else 113 # undef mbwide 114 # define mbwide() (0) 115 # define LEN 1 116 # define isaname(c) (sh_lexstates[ST_NAME][c]==0) 117 # define isaletter(c) (sh_lexstates[ST_DOL][c]==S_ALP && (c)!='.') 118 #endif 119 #define STATE(s,c) (mbwide()?(c=fcmbstate(s,&NXT,&LEN),NXT):s[c=fcget()]) 120 #define isadigit(c) (sh_lexstates[ST_DOL][c]==S_DIG) 121 #define isastchar(c) ((c)=='@' || (c)=='*') 122 #define isexp(c) (sh_lexstates[ST_MACRO][c]==S_PAT||(c)=='$'||(c)=='`') 123 #define ismeta(c) (sh_lexstates[ST_NAME][c]==S_BREAK) 124 125 extern char *sh_lexstates[ST_NONE]; 126 extern const char *sh_lexrstates[ST_NONE]; 127 extern const char e_lexversion[]; 128 extern const char e_lexspace[]; 129 extern const char e_lexslash[]; 130 extern const char e_lexlabignore[]; 131 extern const char e_lexlabunknown[]; 132 extern const char e_lexsyntax1[]; 133 extern const char e_lexsyntax2[]; 134 extern const char e_lexsyntax3[]; 135 extern const char e_lexobsolete1[]; 136 extern const char e_lexobsolete2[]; 137 extern const char e_lexobsolete3[]; 138 extern const char e_lexobsolete4[]; 139 extern const char e_lexobsolete5[]; 140 extern const char e_lexobsolete6[]; 141 extern const char e_lexusebrace[]; 142 extern const char e_lexusequote[]; 143 extern const char e_lexescape[]; 144 extern const char e_lexquote[]; 145 extern const char e_lexnested[]; 146 extern const char e_lexbadchar[]; 147 extern const char e_lexlongquote[]; 148 extern const char e_lexfuture[]; 149 extern const char e_lexzerobyte[]; 150 extern const char e_lexemptyfor[]; 151 #endif 152