1 /* 2 * ALIAS.C - alias administration module. 3 * 4 * 5 * History: 6 * 7 * 02/02/1996 (Oliver Mueller) 8 * started. 9 * 10 * 02/03/1996 (Oliver Mueller) 11 * Added sorting algorithm and case sensitive substitution by using 12 * partstrupr(). 13 * 14 * 27 Jul 1998 John P. Price 15 * added config.h include 16 * added ifdef's to disable aliases 17 * 18 * 09-Dec-1998 Eric Kohl 19 * Fixed crash when removing an alias in DeleteAlias(). 20 * Added help text ("/?"). 21 * 22 * 14-Jan-1998 Eric Kohl 23 * Clean up and Unicode safe! 24 * 25 * 24-Jan-1998 Eric Kohl 26 * Redirection safe! 27 * 28 * 02-Apr-2005 (Magnus Olsen) <magnus@greatlord.com>) 29 * Remove all hardcode string to En.rc 30 * 31 * 02-Feb-2008 (Christoph von Wittich) <christoph_vw@reactos.org>) 32 * rewrote alias handling for doskey compat 33 */ 34 35 36 #include "precomp.h" 37 38 #ifdef FEATURE_ALIASES 39 40 /* module internal functions */ 41 /* strlwr only for first word in string */ 42 static VOID 43 partstrlwr (LPTSTR str) 44 { 45 LPTSTR c = str; 46 while (*c && !_istspace (*c) && *c != _T('=')) 47 { 48 *c = _totlower (*c); 49 c++; 50 } 51 } 52 53 static VOID 54 PrintAlias (VOID) 55 { 56 LPTSTR Aliases; 57 LPTSTR ptr; 58 DWORD len; 59 60 len = GetConsoleAliasesLength(_T("cmd.exe")); 61 if (len <= 0) 62 return; 63 64 /* allocate memory for an extra \0 char to make parsing easier */ 65 ptr = cmd_alloc(len + sizeof(TCHAR)); 66 if (!ptr) 67 return; 68 69 Aliases = ptr; 70 71 ZeroMemory(Aliases, len + sizeof(TCHAR)); 72 73 if (GetConsoleAliases(Aliases, len, _T("cmd.exe")) != 0) 74 { 75 while (*Aliases != '\0') 76 { 77 ConOutPrintf(_T("%s\n"), Aliases); 78 Aliases = Aliases + lstrlen(Aliases); 79 Aliases++; 80 } 81 } 82 cmd_free(ptr); 83 } 84 85 /* specified routines */ 86 VOID ExpandAlias (LPTSTR cmd, INT maxlen) 87 { 88 LPTSTR buffer; 89 TCHAR *position, *in, *out; 90 LPTSTR Token; 91 LPTSTR tmp; 92 93 tmp = cmd_dup(cmd); 94 if (!tmp) 95 return; 96 97 /* first part is the macro name */ 98 position = tmp + _tcscspn(tmp, _T(" \n")); 99 if (position == tmp) 100 { 101 cmd_free(tmp); 102 return; 103 } 104 *position++ = _T('\0'); 105 position += _tcsspn(position, _T(" ")); 106 107 buffer = cmd_alloc(maxlen); 108 if (!buffer) 109 { 110 cmd_free(tmp); 111 return; 112 } 113 114 if (GetConsoleAlias(tmp, buffer, maxlen, _T("cmd.exe")) == 0) 115 { 116 cmd_free(tmp); 117 cmd_free(buffer); 118 return; 119 } 120 121 in = buffer; 122 out = cmd; 123 while (*in) 124 { 125 if (*in == _T('$')) 126 { 127 Token = position; 128 if (in[1] >= _T('1') && in[1] <= _T('9')) 129 { 130 /* Copy a single space-delimited token from the input line */ 131 INT num; 132 for (num = in[1] - _T('1'); num > 0; num--) 133 { 134 Token += _tcscspn(Token, _T(" \n")); 135 Token += _tcsspn(Token, _T(" ")); 136 } 137 while (!_tcschr(_T(" \n"), *Token)) 138 { 139 if (out >= &cmd[maxlen - 1]) 140 break; 141 *out++ = *Token++; 142 } 143 in += 2; 144 continue; 145 } 146 else if (in[1] == _T('*')) 147 { 148 /* Copy the entire remainder of the line */ 149 while (*Token && *Token != _T('\n')) 150 { 151 if (out >= &cmd[maxlen - 1]) 152 break; 153 *out++ = *Token++; 154 } 155 in += 2; 156 continue; 157 } 158 } 159 if (out >= &cmd[maxlen - 1]) 160 break; 161 *out++ = *in++; 162 } 163 *out++ = _T('\n'); 164 *out = _T('\0'); 165 166 cmd_free(buffer); 167 cmd_free(tmp); 168 } 169 170 INT CommandAlias (LPTSTR param) 171 { 172 LPTSTR ptr; 173 174 if (!_tcsncmp (param, _T("/?"), 2)) 175 { 176 ConOutResPaging(TRUE,STRING_ALIAS_HELP); 177 return 0; 178 } 179 180 nErrorLevel = 0; 181 182 if (param[0] == _T('\0')) 183 { 184 PrintAlias (); 185 return 0; 186 } 187 188 nErrorLevel = 0; 189 190 /* error if no '=' found */ 191 if ((ptr = _tcschr (param, _T('='))) == 0) 192 { 193 nErrorLevel = 1; 194 return 1; 195 } 196 197 /* Split rest into name and substitute */ 198 *ptr++ = _T('\0'); 199 200 partstrlwr (param); 201 202 if (ptr[0] == _T('\0')) 203 AddConsoleAlias(param, NULL, _T("cmd.exe")); 204 else 205 AddConsoleAlias(param, ptr, _T("cmd.exe")); 206 207 return 0; 208 } 209 #endif 210