github.com/jimmyx0x/go-ethereum@v1.10.28/build/nsis.envvarupdate.nsh (about) 1 /** 2 * EnvVarUpdate.nsh 3 * : Environmental Variables: append, prepend, and remove entries 4 * 5 * WARNING: If you use StrFunc.nsh header then include it before this file 6 * with all required definitions. This is to avoid conflicts 7 * 8 * Usage: 9 * ${EnvVarUpdate} "ResultVar" "EnvVarName" "Action" "RegLoc" "PathString" 10 * 11 * Credits: 12 * Version 1.0 13 * * Cal Turney (turnec2) 14 * * Amir Szekely (KiCHiK) and e-circ for developing the forerunners of this 15 * function: AddToPath, un.RemoveFromPath, AddToEnvVar, un.RemoveFromEnvVar, 16 * WriteEnvStr, and un.DeleteEnvStr 17 * * Diego Pedroso (deguix) for StrTok 18 * * Kevin English (kenglish_hi) for StrContains 19 * * Hendri Adriaens (Smile2Me), Diego Pedroso (deguix), and Dan Fuhry 20 * (dandaman32) for StrReplace 21 * 22 * Version 1.1 (compatibility with StrFunc.nsh) 23 * * techtonik 24 * 25 * http://nsis.sourceforge.net/Environmental_Variables:_append%2C_prepend%2C_and_remove_entries 26 * 27 */ 28 29 30 !ifndef ENVVARUPDATE_FUNCTION 31 !define ENVVARUPDATE_FUNCTION 32 !verbose push 33 !verbose 3 34 !include "LogicLib.nsh" 35 !include "WinMessages.NSH" 36 !include "StrFunc.nsh" 37 38 ; ---- Fix for conflict if StrFunc.nsh is already includes in main file ----------------------- 39 !macro _IncludeStrFunction StrFuncName 40 !ifndef ${StrFuncName}_INCLUDED 41 ${${StrFuncName}} 42 !endif 43 !ifndef Un${StrFuncName}_INCLUDED 44 ${Un${StrFuncName}} 45 !endif 46 !define un.${StrFuncName} '${Un${StrFuncName}}' 47 !macroend 48 49 !insertmacro _IncludeStrFunction StrTok 50 !insertmacro _IncludeStrFunction StrStr 51 !insertmacro _IncludeStrFunction StrRep 52 53 ; ---------------------------------- Macro Definitions ---------------------------------------- 54 !macro _EnvVarUpdateConstructor ResultVar EnvVarName Action Regloc PathString 55 Push "${EnvVarName}" 56 Push "${Action}" 57 Push "${RegLoc}" 58 Push "${PathString}" 59 Call EnvVarUpdate 60 Pop "${ResultVar}" 61 !macroend 62 !define EnvVarUpdate '!insertmacro "_EnvVarUpdateConstructor"' 63 64 !macro _unEnvVarUpdateConstructor ResultVar EnvVarName Action Regloc PathString 65 Push "${EnvVarName}" 66 Push "${Action}" 67 Push "${RegLoc}" 68 Push "${PathString}" 69 Call un.EnvVarUpdate 70 Pop "${ResultVar}" 71 !macroend 72 !define un.EnvVarUpdate '!insertmacro "_unEnvVarUpdateConstructor"' 73 ; ---------------------------------- Macro Definitions end------------------------------------- 74 75 ;----------------------------------- EnvVarUpdate start---------------------------------------- 76 !define hklm_all_users 'HKLM "SYSTEM\CurrentControlSet\Control\Session Manager\Environment"' 77 !define hkcu_current_user 'HKCU "Environment"' 78 79 !macro EnvVarUpdate UN 80 81 Function ${UN}EnvVarUpdate 82 83 Push $0 84 Exch 4 85 Exch $1 86 Exch 3 87 Exch $2 88 Exch 2 89 Exch $3 90 Exch 91 Exch $4 92 Push $5 93 Push $6 94 Push $7 95 Push $8 96 Push $9 97 Push $R0 98 99 /* After this point: 100 ------------------------- 101 $0 = ResultVar (returned) 102 $1 = EnvVarName (input) 103 $2 = Action (input) 104 $3 = RegLoc (input) 105 $4 = PathString (input) 106 $5 = Orig EnvVar (read from registry) 107 $6 = Len of $0 (temp) 108 $7 = tempstr1 (temp) 109 $8 = Entry counter (temp) 110 $9 = tempstr2 (temp) 111 $R0 = tempChar (temp) */ 112 113 ; Step 1: Read contents of EnvVarName from RegLoc 114 ; 115 ; Check for empty EnvVarName 116 ${If} $1 == "" 117 SetErrors 118 DetailPrint "ERROR: EnvVarName is blank" 119 Goto EnvVarUpdate_Restore_Vars 120 ${EndIf} 121 122 ; Check for valid Action 123 ${If} $2 != "A" 124 ${AndIf} $2 != "P" 125 ${AndIf} $2 != "R" 126 SetErrors 127 DetailPrint "ERROR: Invalid Action - must be A, P, or R" 128 Goto EnvVarUpdate_Restore_Vars 129 ${EndIf} 130 131 ${If} $3 == HKLM 132 ReadRegStr $5 ${hklm_all_users} $1 ; Get EnvVarName from all users into $5 133 ${ElseIf} $3 == HKCU 134 ReadRegStr $5 ${hkcu_current_user} $1 ; Read EnvVarName from current user into $5 135 ${Else} 136 SetErrors 137 DetailPrint 'ERROR: Action is [$3] but must be "HKLM" or HKCU"' 138 Goto EnvVarUpdate_Restore_Vars 139 ${EndIf} 140 141 ; Check for empty PathString 142 ${If} $4 == "" 143 SetErrors 144 DetailPrint "ERROR: PathString is blank" 145 Goto EnvVarUpdate_Restore_Vars 146 ${EndIf} 147 148 ; Make sure we've got some work to do 149 ${If} $5 == "" 150 ${AndIf} $2 == "R" 151 SetErrors 152 DetailPrint "$1 is empty - Nothing to remove" 153 Goto EnvVarUpdate_Restore_Vars 154 ${EndIf} 155 156 ; Step 2: Scrub EnvVar 157 ; 158 StrCpy $0 $5 ; Copy the contents to $0 159 ; Remove spaces around semicolons (NOTE: spaces before the 1st entry or 160 ; after the last one are not removed here but instead in Step 3) 161 ${If} $0 != "" ; If EnvVar is not empty ... 162 ${Do} 163 ${${UN}StrStr} $7 $0 " ;" 164 ${If} $7 == "" 165 ${ExitDo} 166 ${EndIf} 167 ${${UN}StrRep} $0 $0 " ;" ";" ; Remove '<space>;' 168 ${Loop} 169 ${Do} 170 ${${UN}StrStr} $7 $0 "; " 171 ${If} $7 == "" 172 ${ExitDo} 173 ${EndIf} 174 ${${UN}StrRep} $0 $0 "; " ";" ; Remove ';<space>' 175 ${Loop} 176 ${Do} 177 ${${UN}StrStr} $7 $0 ";;" 178 ${If} $7 == "" 179 ${ExitDo} 180 ${EndIf} 181 ${${UN}StrRep} $0 $0 ";;" ";" 182 ${Loop} 183 184 ; Remove a leading or trailing semicolon from EnvVar 185 StrCpy $7 $0 1 0 186 ${If} $7 == ";" 187 StrCpy $0 $0 "" 1 ; Change ';<EnvVar>' to '<EnvVar>' 188 ${EndIf} 189 StrLen $6 $0 190 IntOp $6 $6 - 1 191 StrCpy $7 $0 1 $6 192 ${If} $7 == ";" 193 StrCpy $0 $0 $6 ; Change ';<EnvVar>' to '<EnvVar>' 194 ${EndIf} 195 ; DetailPrint "Scrubbed $1: [$0]" ; Uncomment to debug 196 ${EndIf} 197 198 /* Step 3. Remove all instances of the target path/string (even if "A" or "P") 199 $6 = bool flag (1 = found and removed PathString) 200 $7 = a string (e.g. path) delimited by semicolon(s) 201 $8 = entry counter starting at 0 202 $9 = copy of $0 203 $R0 = tempChar */ 204 205 ${If} $5 != "" ; If EnvVar is not empty ... 206 StrCpy $9 $0 207 StrCpy $0 "" 208 StrCpy $8 0 209 StrCpy $6 0 210 211 ${Do} 212 ${${UN}StrTok} $7 $9 ";" $8 "0" ; $7 = next entry, $8 = entry counter 213 214 ${If} $7 == "" ; If we've run out of entries, 215 ${ExitDo} ; were done 216 ${EndIf} ; 217 218 ; Remove leading and trailing spaces from this entry (critical step for Action=Remove) 219 ${Do} 220 StrCpy $R0 $7 1 221 ${If} $R0 != " " 222 ${ExitDo} 223 ${EndIf} 224 StrCpy $7 $7 "" 1 ; Remove leading space 225 ${Loop} 226 ${Do} 227 StrCpy $R0 $7 1 -1 228 ${If} $R0 != " " 229 ${ExitDo} 230 ${EndIf} 231 StrCpy $7 $7 -1 ; Remove trailing space 232 ${Loop} 233 ${If} $7 == $4 ; If string matches, remove it by not appending it 234 StrCpy $6 1 ; Set 'found' flag 235 ${ElseIf} $7 != $4 ; If string does NOT match 236 ${AndIf} $0 == "" ; and the 1st string being added to $0, 237 StrCpy $0 $7 ; copy it to $0 without a prepended semicolon 238 ${ElseIf} $7 != $4 ; If string does NOT match 239 ${AndIf} $0 != "" ; and this is NOT the 1st string to be added to $0, 240 StrCpy $0 $0;$7 ; append path to $0 with a prepended semicolon 241 ${EndIf} ; 242 243 IntOp $8 $8 + 1 ; Bump counter 244 ${Loop} ; Check for duplicates until we run out of paths 245 ${EndIf} 246 247 ; Step 4: Perform the requested Action 248 ; 249 ${If} $2 != "R" ; If Append or Prepend 250 ${If} $6 == 1 ; And if we found the target 251 DetailPrint "Target is already present in $1. It will be removed and" 252 ${EndIf} 253 ${If} $0 == "" ; If EnvVar is (now) empty 254 StrCpy $0 $4 ; just copy PathString to EnvVar 255 ${If} $6 == 0 ; If found flag is either 0 256 ${OrIf} $6 == "" ; or blank (if EnvVarName is empty) 257 DetailPrint "$1 was empty and has been updated with the target" 258 ${EndIf} 259 ${ElseIf} $2 == "A" ; If Append (and EnvVar is not empty), 260 StrCpy $0 $0;$4 ; append PathString 261 ${If} $6 == 1 262 DetailPrint "appended to $1" 263 ${Else} 264 DetailPrint "Target was appended to $1" 265 ${EndIf} 266 ${Else} ; If Prepend (and EnvVar is not empty), 267 StrCpy $0 $4;$0 ; prepend PathString 268 ${If} $6 == 1 269 DetailPrint "prepended to $1" 270 ${Else} 271 DetailPrint "Target was prepended to $1" 272 ${EndIf} 273 ${EndIf} 274 ${Else} ; If Action = Remove 275 ${If} $6 == 1 ; and we found the target 276 DetailPrint "Target was found and removed from $1" 277 ${Else} 278 DetailPrint "Target was NOT found in $1 (nothing to remove)" 279 ${EndIf} 280 ${If} $0 == "" 281 DetailPrint "$1 is now empty" 282 ${EndIf} 283 ${EndIf} 284 285 ; Step 5: Update the registry at RegLoc with the updated EnvVar and announce the change 286 ; 287 ClearErrors 288 ${If} $3 == HKLM 289 WriteRegExpandStr ${hklm_all_users} $1 $0 ; Write it in all users section 290 ${ElseIf} $3 == HKCU 291 WriteRegExpandStr ${hkcu_current_user} $1 $0 ; Write it to current user section 292 ${EndIf} 293 294 IfErrors 0 +4 295 MessageBox MB_OK|MB_ICONEXCLAMATION "Could not write updated $1 to $3" 296 DetailPrint "Could not write updated $1 to $3" 297 Goto EnvVarUpdate_Restore_Vars 298 299 ; "Export" our change 300 SendMessage ${HWND_BROADCAST} ${WM_WININICHANGE} 0 "STR:Environment" /TIMEOUT=5000 301 302 EnvVarUpdate_Restore_Vars: 303 ; 304 ; Restore the user's variables and return ResultVar 305 Pop $R0 306 Pop $9 307 Pop $8 308 Pop $7 309 Pop $6 310 Pop $5 311 Pop $4 312 Pop $3 313 Pop $2 314 Pop $1 315 Push $0 ; Push my $0 (ResultVar) 316 Exch 317 Pop $0 ; Restore his $0 318 319 FunctionEnd 320 321 !macroend ; EnvVarUpdate UN 322 !insertmacro EnvVarUpdate "" 323 !insertmacro EnvVarUpdate "un." 324 ;----------------------------------- EnvVarUpdate end---------------------------------------- 325 326 !verbose pop 327 !endif