1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1992-2008 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 * Glenn Fowler <gsf@research.att.com> * 18 * David Korn <dgk@research.att.com> * 19 * * 20 ***********************************************************************/ 21 #pragma prototyped 22 /* 23 * AT&T Research 24 * 25 * builtin cmd definitions 26 */ 27 28 #ifndef _CMD_H 29 #define _CMD_H 30 31 #include <ast.h> 32 #include <error.h> 33 #include <stak.h> 34 #include <shcmd.h> 35 36 #define cmdinit _cmd_init 37 38 #if _BLD_cmd && defined(__EXPORT__) 39 #define extern __EXPORT__ 40 #endif 41 42 #include <cmdext.h> 43 44 #undef extern 45 46 #if defined(CMD_BUILTIN) && !defined(CMD_STANDALONE) 47 #define CMD_STANDALONE CMD_BUILTIN 48 #endif 49 50 #ifdef CMD_STANDALONE 51 52 #define CMD_CONTEXT(c) ((Shbltin_t*)0) 53 54 #if CMD_DYNAMIC 55 56 #include <dlldefs.h> 57 58 typedef int (*Shbltin_f)(int, char**, void*); 59 60 #else 61 62 extern int CMD_STANDALONE(int, char**, void*); 63 64 #endif 65 66 #ifndef CMD_BUILTIN 67 68 /* 69 * command initialization 70 */ 71 72 static int 73 cmdinit(int argc, register char** argv, void* context, const char* catalog, int flags) 74 { 75 register char* cp; 76 register char* pp; 77 78 if (cp = strrchr(argv[0], '/')) 79 cp++; 80 else 81 cp = argv[0]; 82 if (pp = strrchr(cp, '_')) 83 cp = pp + 1; 84 error_info.id = cp; 85 if (!error_info.catalog) 86 error_info.catalog = (char*)catalog; 87 opt_info.index = 0; 88 if (context) 89 error_info.flags |= flags; 90 return 0; 91 } 92 93 #endif 94 95 int 96 main(int argc, char** argv) 97 { 98 #if CMD_DYNAMIC 99 register char* s; 100 register char* t; 101 void* dll; 102 Shbltin_f fun; 103 char buf[64]; 104 105 if (s = strrchr(argv[0], '/')) 106 s++; 107 else if (!(s = argv[0])) 108 return 127; 109 if ((t = strrchr(s, '_')) && *++t) 110 s = t; 111 buf[0] = '_'; 112 buf[1] = 'b'; 113 buf[2] = '_'; 114 strncpy(buf + 3, s, sizeof(buf) - 4); 115 buf[sizeof(buf) - 1] = 0; 116 if (t = strchr(buf, '.')) 117 *t = 0; 118 for (;;) 119 { 120 if (dll = dlopen(NiL, RTLD_LAZY)) 121 { 122 if (fun = (Shbltin_f)dlsym(dll, buf + 1)) 123 break; 124 if (fun = (Shbltin_f)dlsym(dll, buf)) 125 break; 126 } 127 if (dll = dllfind("cmd", NiL, RTLD_LAZY)) 128 { 129 if (fun = (Shbltin_f)dlsym(dll, buf + 1)) 130 break; 131 if (fun = (Shbltin_f)dlsym(dll, buf)) 132 break; 133 } 134 return 127; 135 } 136 return (*fun)(argc, argv, NiL); 137 #else 138 return CMD_STANDALONE(argc, argv, NiL); 139 #endif 140 } 141 142 #else 143 144 #undef cmdinit 145 #ifdef _MSC_VER 146 #define CMD_CONTEXT(p) ((Shbltin_t*)(p)) 147 #define cmdinit(a,b,c,d,e) do{if(_cmd_init(a,b,c,d,e))return -1;}while(0) 148 #else 149 #define CMD_CONTEXT(p) (((p)&&((Shbltin_t*)(p))->version>=20071012&&((Shbltin_t*)(p))->version<20350101)?((Shbltin_t*)(p)):0) 150 #define cmdinit(a,b,c,d,e) do{if((c)&&!CMD_CONTEXT(c))c=0;if(_cmd_init(a,b,c,d,e))return -1;}while(0) 151 #endif 152 153 #if _BLD_cmd && defined(__EXPORT__) 154 #define extern extern __EXPORT__ 155 #endif 156 157 extern int _cmd_init(int, char**, void*, const char*, int); 158 159 #undef extern 160 161 #endif 162 163 #endif 164