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 ARG_RAW 22 /* 23 * struct to hold a word argument 24 * Written by David Korn 25 * 26 */ 27 28 #include <stak.h> 29 30 struct ionod 31 { 32 unsigned iofile; 33 char *ioname; 34 struct ionod *ionxt; 35 struct ionod *iolst; 36 char *iodelim; 37 off_t iooffset; 38 long iosize; 39 char *iovname; 40 }; 41 42 struct comnod 43 { 44 int comtyp; 45 struct ionod *comio; 46 struct argnod *comarg; 47 struct argnod *comset; 48 void *comnamp; 49 void *comnamq; 50 void *comstate; 51 int comline; 52 }; 53 54 #define COMBITS 4 55 #define COMMSK ((1<<COMBITS)-1) 56 #define COMSCAN (01<<COMBITS) 57 #define COMFIXED (02<<COMBITS) 58 59 struct slnod /* struct for link list of stacks */ 60 { 61 struct slnod *slnext; 62 struct slnod *slchild; 63 Stak_t *slptr; 64 }; 65 66 /* 67 * This struct is use to hold $* lists and arrays 68 */ 69 70 struct dolnod 71 { 72 short dolrefcnt; /* reference count */ 73 short dolmax; /* size of dolval array */ 74 short dolnum; /* number of elements */ 75 short dolbot; /* current first element */ 76 struct dolnod *dolnxt; /* used when list are chained */ 77 char *dolval[1]; /* array of value pointers */ 78 }; 79 80 /* 81 * This struct is used to hold word arguments of variable size during 82 * parsing and during expansion. The flags indicate what processing 83 * is required on the argument. 84 */ 85 86 struct argnod 87 { 88 union 89 { 90 struct argnod *ap; 91 char *cp; 92 } argnxt; 93 union 94 { 95 struct argnod *ap; 96 char *cp; 97 int len; 98 } argchn; 99 unsigned char argflag; 100 char argval[4]; 101 }; 102 103 104 105 /* The following should evaluate to the offset of argval in argnod */ 106 #define ARGVAL offsetof(struct argnod,argval[0]) 107 #define sh_argstr(ap) ((ap)->argflag&ARG_RAW?sh_fmtq((ap)->argval):(ap)->argval) 108 #define ARG_SPARE 1 109 110 111 /* legal argument flags */ 112 #define ARG_RAW 0x1 /* string needs no processing */ 113 #define ARG_MAKE 0x2 /* bit set during argument expansion */ 114 #define ARG_COMSUB 0x2 /* command sub */ 115 #define ARG_MAC 0x4 /* string needs macro expansion */ 116 #define ARG_EXP 0x8 /* string needs file expansion */ 117 #define ARG_ASSIGN 0x10 /* argument is an assignment */ 118 #define ARG_QUOTED 0x20 /* word contained quote characters */ 119 #define ARG_MESSAGE 0x40 /* contains international string */ 120 #define ARG_APPEND 0x80 /* for += assignment */ 121 /* The following can be passed as options to sh_macexpand() */ 122 #define ARG_ARITH 0x100 /* arithmetic expansion */ 123 #define ARG_OPTIMIZE 0x200 /* try to optimize */ 124 #define ARG_NOGLOB 0x400 /* no file name expansion */ 125 #define ARG_LET 0x800 /* processing let command arguments */ 126 127 extern char **sh_argbuild(int*,const struct comnod*,int); 128 extern struct dolnod *sh_argcreate(char*[]); 129 extern char *sh_argdolminus(void); 130 extern struct dolnod *sh_argfree(struct dolnod*,int); 131 extern struct dolnod *sh_argnew(char*[],struct dolnod**); 132 extern int sh_argopts(int,char*[]); 133 extern void sh_argreset(struct dolnod*,struct dolnod*); 134 extern void sh_argset(char*[]); 135 extern struct dolnod *sh_arguse(void); 136 137 extern const char e_heading[]; 138 extern const char e_off[]; 139 extern const char e_on[]; 140 extern const char e_sptbnl[]; 141 extern const char e_subst[]; 142 extern const char e_option[]; 143 extern const char e_exec[]; 144 extern const char e_devfdNN[]; 145 extern const char e_devfdstd[]; 146 147 #endif /* ARG_RAW */ 148