Packaging: move NSIS plugins and macros to /plugins and /macros subdirs

(bzr r15244.1.3)

5 files changed, 648 insertions, 0 deletions

diff --git a/packaging/win32/macros/AdvUninstLog.nsh b/packaging/win32/macros/AdvUninstLog.nsh
new file mode 100644
index 000000000..f48049164
--- /dev/null
+++ b/packaging/win32/macros/AdvUninstLog.nsh
@@ -0,0 +1,437 @@
+     ;_____________________________ HEADER FILE BEGIN ____________________________
+
+     # Advanced Uninstall Log NSIS header
+     # Version 1.0 2007-01-31
+     # By Red Wine (http://nsis.sf.net/User:Red_Wine)
+     
+     # Usage: See included examples Uninstall_Log_Default_UI.nsi - Uninstall_Log_Modern_UI.nsi
+
+!verbose push
+   !verbose 3
+
+!ifndef ADVANCED_UNINSTALL.LOG_NSH
+   !define ADVANCED_UNINSTALL.LOG_NSH
+
+!ifndef INSTDIR_REG_ROOT | INSTDIR_REG_KEY
+   !error "You must properly define both INSTDIR_REG_ROOT and INSTDIR_REG_KEY"
+!endif
+
+!ifndef UNINSTALL_LOG
+   !define UNINSTALL_LOG         "Uninstall"
+!endif
+
+!ifndef UNINST_LOG_VERBOSE
+   !define UNINST_LOG_VERBOSE    "3"
+!endif
+
+!verbose pop
+
+!echo "Advanced Uninstall Log NSIS header v1.0 2007-01-31 by Red Wine (http://nsis.sf.net/User:Red_Wine)"
+
+!verbose push
+   !verbose ${UNINST_LOG_VERBOSE}
+
+!define UNINST_EXE     "$INSTDIR\${UNINSTALL_LOG}.exe"
+!define UNINST_DAT     "$INSTDIR\${UNINSTALL_LOG}.dat"
+!define UNLOG_PART     "$PLUGINSDIR\part."
+!define UNLOG_TEMP     "$PLUGINSDIR\unlog.tmp"
+!define EXCLU_LIST     "$PLUGINSDIR\exclude.tmp"
+!define UNLOG_HEAD     "=========== Uninstaller Log please do not edit this file ==========="
+
+ var unlog_tmp_0
+ var unlog_tmp_1
+ var unlog_tmp_2
+ var unlog_tmp_3
+ var unlog_error
+
+!include FileFunc.nsh
+!include TextFunc.nsh
+
+!insertmacro Locate
+!insertmacro un.Locate
+!insertmacro DirState
+!insertmacro un.DirState
+!insertmacro FileJoin
+!insertmacro TrimNewLines
+!insertmacro un.TrimNewLines
+
+;.............................. Uninstaller Macros ..............................
+
+!macro UNINSTALL.LOG_BEGIN_UNINSTALL
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+        IfFileExists "${UNINST_DAT}" +3
+        MessageBox MB_ICONSTOP|MB_OK "${UNINST_DAT} not found, unable to perform uninstall." /SD IDOK
+        Quit
+
+        StrCmp "$PLUGINSDIR" "" 0 +2
+           InitPluginsDir
+
+        CopyFiles "${UNINST_DAT}" "${UNLOG_TEMP}"
+        FileOpen $unlog_tmp_2 "${UNLOG_TEMP}" r
+
+  !verbose pop
+!macroend
+
+
+!macro UNINSTALL.LOG_END_UNINSTALL
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+        FileClose $unlog_tmp_2
+        DeleteRegValue ${INSTDIR_REG_ROOT} "${INSTDIR_REG_KEY}" "${UNINSTALL_LOG}.dat"
+        DeleteRegValue ${INSTDIR_REG_ROOT} "${INSTDIR_REG_KEY}" "${UNINSTALL_LOG}Directory"
+
+  !verbose pop
+!macroend
+
+
+!macro UNINSTALL.LOG_UNINSTALL TargetDir
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+     !ifndef INTERACTIVE_UNINSTALL & UNATTENDED_UNINSTALL
+        !error "You must insert either Interactive or Unattended Uninstall neither both, neither none."
+     !endif
+
+     !ifdef INTERACTIVE_UNINSTALL
+        GetTempFileName $unlog_tmp_5 "$PLUGINSDIR"
+        FileOpen $unlog_tmp_4 "$unlog_tmp_5" a
+     !endif
+
+        ${PerfomUninstall} "${TargetDir}" "${UnLog_Uninstall_CallBackFunc}"
+
+     !ifdef INTERACTIVE_UNINSTALL
+        FileClose $unlog_tmp_4
+     !endif
+
+  !verbose pop
+!macroend
+
+
+!define PerfomUninstall "!insertmacro PERFORMUNINSTALL"
+
+!macro PERFORMUNINSTALL TargetDir UninstCallBackFunc
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+   !define ID ${__LINE__}
+
+	${un.Locate} "${TargetDir}" "/L=F" "${UninstCallBackFunc}"
+
+    loop_${ID}:
+
+	StrCpy $unlog_tmp_1 0
+
+	${un.Locate} "${TargetDir}" "/L=DE" "${UninstCallBackFunc}"
+	StrCmp $unlog_tmp_1 "0" 0 loop_${ID}
+
+        ${un.DirState} "${TargetDir}" $unlog_tmp_0
+        StrCmp "$unlog_tmp_0" "0" 0 +2
+        RmDir "${TargetDir}"
+
+	IfErrors 0 +2
+	MessageBox MB_ICONEXCLAMATION|MB_OK "${UNINSTALL_LOG} Log error" /SD IDOK
+
+   !undef ID
+
+  !verbose pop
+!macroend
+
+
+!macro INTERACTIVE_UNINSTALL
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+     
+     !ifdef INTERACTIVE_UNINSTALL
+        !error "INTERACTIVE_UNINSTALL is already defined"
+     !endif
+
+        var unlog_tmp_4
+        var unlog_tmp_5
+
+     !define INTERACTIVE_UNINSTALL
+
+     !ifdef INTERACTIVE_UNINSTALL & UNATTENDED_UNINSTALL
+        !error "You must insert either Interactive or Unattended Uninstall neither both, neither none."
+     !endif
+
+     !ifdef UnLog_Uninstall_CallBackFunc
+        !undef UnLog_Uninstall_CallBackFunc
+     !endif
+
+     !ifndef UnLog_Uninstall_CallBackFunc
+        !insertmacro UNINSTALL.LOG_UNINSTALL_INTERACTIVE
+        !define UnLog_Uninstall_CallBackFunc "un._LocateCallBack_Function_Interactive"
+     !endif
+
+  !verbose pop
+!macroend
+
+
+!macro UNATTENDED_UNINSTALL
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+     !ifdef UNATTENDED_UNINSTALL
+        !error "UNATTENDED_UNINSTALL is already defined"
+     !endif
+
+     !define UNATTENDED_UNINSTALL
+
+     !ifdef INTERACTIVE_UNINSTALL & UNATTENDED_UNINSTALL
+        !error "You must insert either Interactive or Unattended Uninstall neither both, neither none."
+     !endif
+
+     !ifdef UnLog_Uninstall_CallBackFunc
+        !undef UnLog_Uninstall_CallBackFunc
+     !endif
+
+     !ifndef UnLog_Uninstall_CallBackFunc
+        !insertmacro UNINSTALL.LOG_UNINSTALL_UNATTENDED
+        !define UnLog_Uninstall_CallBackFunc "un._LocateCallBack_Function_Unattended"
+     !endif
+
+  !verbose pop
+!macroend
+
+
+!macro UNINSTALL.LOG_UNINSTALL_UNATTENDED
+
+  Function un._LocateCallBack_Function_Unattended
+    start:
+        FileRead $unlog_tmp_2 "$unlog_tmp_3" ${NSIS_MAX_STRLEN}
+        ${un.TrimNewLines} "$unlog_tmp_3" "$unlog_tmp_3"
+        StrCmp "$unlog_tmp_3" "$R9" islog
+        IfErrors nolog
+        goto start
+
+    islog:
+        IfFileExists "$R9\*.*" isdir
+
+    isfile:
+        Delete "$R9"
+        goto end
+
+    isdir:
+        RmDir "$R9"
+	IntOp $unlog_tmp_1 $unlog_tmp_1 + 1
+        goto end
+
+    nolog:
+        ClearErrors
+        StrCmp "$R9" "${UNINST_EXE}" isfile
+        StrCmp "$R9" "${UNINST_DAT}" isfile
+
+    end:
+        FileSeek $unlog_tmp_2 0 SET
+	Push $unlog_tmp_0
+  FunctionEnd
+
+!macroend
+
+
+!macro UNINSTALL.LOG_UNINSTALL_INTERACTIVE
+
+  Function un._LocateCallBack_Function_Interactive
+    start:
+        FileRead $unlog_tmp_2 "$unlog_tmp_3" ${NSIS_MAX_STRLEN}
+        ${un.TrimNewLines} "$unlog_tmp_3" "$unlog_tmp_3"
+        StrCmp "$unlog_tmp_3" "$R9" islog
+        IfErrors nolog
+        goto start
+
+    islog:
+        IfFileExists "$R9\*.*" isdir
+
+    isfile:
+        Delete "$R9"
+        goto end
+
+    isdir:
+        RmDir "$R9"
+	IntOp $unlog_tmp_1 $unlog_tmp_1 + 1
+        goto end
+
+    nolog:
+        ClearErrors
+	FileSeek $unlog_tmp_4 0 SET
+    read:
+        FileRead $unlog_tmp_4 "$unlog_tmp_3"
+        ${un.TrimNewLines} "$unlog_tmp_3" "$unlog_tmp_3"
+        StrCmp "$unlog_tmp_3" "$R9" end
+        IfErrors +2
+        goto read
+        ClearErrors 
+        StrCmp "$R9" "${UNINST_EXE}" isfile
+        StrCmp "$R9" "${UNINST_DAT}" isfile
+        IfFileExists "$R9\*.*" msgdir
+
+	MessageBox MB_ICONQUESTION|MB_YESNO \
+        'Delete File "$R9"?' /SD IDNO IDYES isfile IDNO nodel
+
+    msgdir:
+        MessageBox MB_ICONQUESTION|MB_YESNO \
+        'Delete Directory "$R9"?' /SD IDNO IDYES isdir IDNO nodel
+
+    nodel:
+	FileSeek $unlog_tmp_4 0 END
+	FileWrite $unlog_tmp_4 "$R9$\r$\n"
+
+    end:
+        FileSeek $unlog_tmp_2 0 SET
+	Push $unlog_tmp_0
+  FunctionEnd
+
+!macroend
+
+;................................. Installer Macros .................................
+
+!macro UNINSTALL.LOG_INSTALL_UNATTENDED
+
+  Function _LocateCallBack_Function_Install
+    loop:
+        FileRead $unlog_tmp_2 "$unlog_tmp_3" ${NSIS_MAX_STRLEN}
+        ${TrimNewLines} "$unlog_tmp_3" "$unlog_tmp_3"
+        IfErrors 0 +4
+        ClearErrors
+        FileSeek $unlog_tmp_2 0 SET
+        goto next
+        StrCmp "$R9" "$unlog_tmp_3" end
+        goto loop
+    next:
+	FileWrite $unlog_tmp_1 "$R9$\r$\n"
+    end:
+	Push $unlog_tmp_0
+  FunctionEnd
+
+!macroend
+
+
+!ifdef UnLog_Install_Func_CallBack
+    !undef UnLog_Install_Func_CallBack
+!endif
+
+!ifndef UnLog_Install_Func_CallBack
+    !insertmacro UNINSTALL.LOG_INSTALL_UNATTENDED
+    !define UnLog_Install_Func_CallBack "_LocateCallBack_Function_Install"
+!endif
+
+
+!macro UNINSTALL.LOG_PREPARE_INSTALL
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+      Push $0
+      Push $1
+        ClearErrors
+        ReadRegStr "$0"  ${INSTDIR_REG_ROOT} "${INSTDIR_REG_KEY}" "${UNINSTALL_LOG}Directory"
+        IfErrors next
+        ${DirState} "$0" $1
+        StrCmp "$1" "-1" next
+        StrCmp "$1" "0" next
+        IfFileExists "$0\${UNINSTALL_LOG}.dat" next
+        MessageBox MB_ICONEXCLAMATION|MB_OK \
+        "Previous installation detected at $0.$\n\
+        Required file ${UNINSTALL_LOG}.dat is missing.$\n$\nIt is highly recommended \
+        to select an empty directory and perform a fresh installation." /SD IDOK
+        StrCpy $unlog_error "error"
+
+    next:
+        ClearErrors
+        StrCmp "$PLUGINSDIR" "" 0 +2
+           InitPluginsDir
+
+        GetTempFileName "$1"
+        FileOpen $0 "$1" w
+        FileWrite $0 "${UNLOG_HEAD}$\r$\n"
+        FileClose $0
+        Rename "$1" "${UNLOG_TEMP}"
+      Pop $1
+      Pop $0
+
+  !verbose pop
+!macroend
+
+
+!macro UNINSTALL.LOG_UPDATE_INSTALL
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+        Delete "${UNINST_DAT}"
+        Rename "${UNLOG_TEMP}" "${UNINST_DAT}"
+        WriteUninstaller "${UNINST_EXE}"
+        WriteRegStr ${INSTDIR_REG_ROOT} "${INSTDIR_REG_KEY}" "${UNINSTALL_LOG}.dat" "${UNINST_DAT}"
+        WriteRegStr ${INSTDIR_REG_ROOT} "${INSTDIR_REG_KEY}" "${UNINSTALL_LOG}Directory" "$INSTDIR"
+
+  !verbose pop
+!macroend
+
+
+!define uninstall.log_install "!insertmacro UNINSTALL.LOG_INSTALL"
+
+!macro UNINSTALL.LOG_INSTALL FileOpenWrite FileOpenRead TargetDir
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+	FileOpen $unlog_tmp_1 "${FileOpenWrite}" w
+	FileOpen $unlog_tmp_2 "${FileOpenRead}" r
+
+	${Locate} "${TargetDir}" "/L=FD" "${UnLog_Install_Func_CallBack}"
+
+        StrCmp $unlog_error "error" 0 +2
+        ClearErrors
+
+	IfErrors 0 +2
+	MessageBox MB_ICONEXCLAMATION|MB_OK "Error creating ${UNINSTALL_LOG} Log." /SD IDOK
+
+	FileClose $unlog_tmp_1
+	FileClose $unlog_tmp_2
+
+  !verbose pop
+!macroend
+
+
+!define uninstall.log_mergeID "!insertmacro UNINSTALL.LOG_MERGE"
+
+!macro UNINSTALL.LOG_MERGE UnlogPart
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+        ${FileJoin} "${UNLOG_TEMP}" "${UnlogPart}" "${UNLOG_TEMP}"
+
+  !verbose pop
+!macroend
+
+
+!macro UNINSTALL.LOG_OPEN_INSTALL
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+        StrCmp $unlog_error "error" +2
+        ${uninstall.log_install} "${EXCLU_LIST}" "${UNINST_DAT}" "$OUTDIR"
+
+  !verbose pop
+!macroend
+
+
+!macro UNINSTALL.LOG_CLOSE_INSTALL
+  !verbose push
+     !verbose ${UNINST_LOG_VERBOSE}
+
+   !define ID ${__LINE__}
+
+        ${uninstall.log_install} "${UNLOG_PART}${ID}" "${EXCLU_LIST}" "$OUTDIR"
+        ${uninstall.log_mergeID} "${UNLOG_PART}${ID}"
+
+   !undef ID ${__LINE__}
+
+  !verbose pop
+!macroend
+
+!endif
+
+!verbose pop
+     ;_____________________________ HEADER FILE END ____________________________
+
diff --git a/packaging/win32/macros/AdvUninstLog.txt b/packaging/win32/macros/AdvUninstLog.txt
new file mode 100644
index 000000000..c294c3df2
--- /dev/null
+++ b/packaging/win32/macros/AdvUninstLog.txt
@@ -0,0 +1,121 @@
+Overview
+
+Advanced Uninstall Log for NSIS was born in the need to cover a specific gap.
+It's been discussed fairly enough that the File /r command is very useful
+in cases when developers want to add a huge amount of sub directories and
+files, nevertheless it has the disadvantage that such an installation should
+be uninstalled with RmDir /r which is risky and removes also data that has
+been added/created later within the installation folder.
+
+
+
+
+About Advanced Uninstall Log.
+
+Advanced Uninstall Log is a macro system provided in a NSIS header that
+is able to monitor an installation and build an uninstall log file which
+is used by the uninstaller to uninstall files/directories that have been
+added within specific installation blocks.
+
+This means that files which have been installed outside these blocks,
+or added later either by the user or application's activities, ignored
+by the uninstaller.
+
+Moreover files that might exist into the target directory prior the current
+installation, ignored as well.
+
+Advanced Uninstall Log creates an uninstall log that removes only files that
+have been installed and optionally interacts with users for every other file
+and/or directory has found in installation folder and requires permission to
+remove these files/directories.
+
+It is enhanced as well to support updates, e.g. if the installer later would
+update the installation by adding new data, the uninstaller would remove the
+new data that has been added by the installer, without bothering users about.
+
+
+
+
+Features
+
+If target installation folder exists and contains files and/or directories
+they all preserved from being uninstalled.
+
+Uninstaller removes data that has been added within specific installation
+blocks, preserving all other data that has been created/added outside of
+these installation blocks. See included examples for details.
+
+Supports unlimited updates/reinstallations.
+
+Supports two uninstaller modes. Interactive mode requires confirmation
+to remove every other file exept those files that have been installed.
+Unattended mode leaves intact every other file without bothering users.
+
+In case when uninstall log (uninstall.dat) has been removed manually instead
+of execute uninstaller, if users attempt to run the installer later, a warning
+issued that they should select a new output folder.
+
+Implements only the included with NSIS release headers FileFunc and TextFunc.
+There is no need for external plugins and headers, adds a very small overhead.
+
+
+
+
+Restrictions
+
+If uninstall log (uninstall.dat) is missing uninstaller won't execute at all.
+
+Due to file create - write procedure that is required in order to add/update
+the uninstall log (uninstall.dat), restricted users on NT based systems won't 
+be able to execute the installer.
+
+
+
+
+Disadvantage
+
+Since the header does not implement anything else than the common NSIS release,
+a delay occurs while builds and reads the uninstall log because it needs to
+throw the list several times. Talking for common cases, most likely the delay
+won't be noticeable, however, in cases where the target directory isn't empty
+and contains a large amount of data which will be excluded from uninstall log,
+or added large amount of data after the installation which will be excluded also,
+the delay should be noticeable.
+
+
+
+
+Credits
+
+A very big thanks goes to kichik.
+When my idea of the Advanced Uninstall Log became an NSIS header, it was 
+indeed an amateur's attempt to write a flexible and errors free NSIS header.
+Kichik dropped me a dozen of suggestions helping me to achieve my plan.
+However, his main suggestion to eliminate the mentioned above disadvantage,
+still remains untouched by me.
+
+
+
+
+License
+
+This header file is provided 'as-is', without any express or implied warranty.
+In no event will the author be held liable for any damages arising from the use
+of this header file.
+
+Permission is granted to anyone to use this header file for any purpose,
+including commercial applications, and to alter it and redistribute it freely,
+subject to the following restrictions:
+
+   1. The origin of this header file must not be misrepresented; 
+      you must not claim that you wrote the original header file.
+      If you use this header file in a product, an acknowledgment in 
+      the product documentation would be appreciated but is not required.
+
+   2. Altered versions must be plainly marked as such, and must not be 
+      misrepresented as being the original header file.
+
+   3. This notice may not be removed or altered from any distribution. 
+
+
+eof
\ No newline at end of file
diff --git a/packaging/win32/macros/RequireLatestNSIS.nsh b/packaging/win32/macros/RequireLatestNSIS.nsh
new file mode 100644
index 000000000..70371552a
--- /dev/null
+++ b/packaging/win32/macros/RequireLatestNSIS.nsh
@@ -0,0 +1,9 @@
+!if `${NSIS_VERSION}` == `v2.45`
+	!error "There is a bug in !searchparse which makes this script not compile in NSIS 2.45. Please upgrade to NSIS 2.46 or later and try again."
+!else
+	!echo "(If you get a compile error with !searchparse, please upgrade to NSIS 2.46 or later and try again.)"
+!endif
+!searchparse ${NSIS_VERSION} "v" V
+!if ${V} < 2.46
+	!error "You only have NSIS ${V}, but NSIS 2.46 or later is required for proper Windows 7 support. Please upgrade to NSIS 2.46 or later and try again."
+!endif
diff --git a/packaging/win32/macros/VersionCompleteXXXX.nsh b/packaging/win32/macros/VersionCompleteXXXX.nsh
new file mode 100644
index 000000000..6ea780508
--- /dev/null
+++ b/packaging/win32/macros/VersionCompleteXXXX.nsh
@@ -0,0 +1,60 @@
+; See http://nsis.sourceforge.net/VersionCompleteXXXX for documentation
+!macro VersionCompleteXXXRevision _INPUT_VALUE _OUTPUT_SYMBOL _REVISION
+	!searchparse /noerrors ${_INPUT_VALUE} "" _VERSION_1 "." _VERSION_2 "." _VERSION_3 "." _VERSION_4
+	!ifndef _VERSION_1
+		!define _VERSION_1 0
+	!else if `${_VERSION_1}` == ``
+		!define /redef _VERSION_1 0
+	!endif
+	!ifndef _VERSION_2
+		!define _VERSION_2 0
+	!else if `${_VERSION_2}` == ``
+		!define /redef _VERSION_2 0
+	!endif
+	!ifndef _VERSION_3
+		!define _VERSION_3 0
+	!else if `${_VERSION_3}` == ``
+		!define /redef _VERSION_3 0
+	!endif
+	!ifndef _VERSION_4
+		!define _VERSION_4 0
+	!else if `${_VERSION_4}` == ``
+		!define /redef _VERSION_4 0
+	!endif
+	!define ${_OUTPUT_SYMBOL} ${_VERSION_1}.${_VERSION_2}.${_VERSION_3}.${_REVISION}
+	!undef _VERSION_1
+	!undef _VERSION_2
+	!undef _VERSION_3
+	!undef _VERSION_4
+	!undef _REVISION
+!macroend
+!define VersionCompleteXXXRevision `!insertmacro VersionCompleteXXXRevision`
+!macro VersionCompleteXXXX _INPUT_VALUE _OUTPUT_SYMBOL
+	!searchparse /noerrors ${_INPUT_VALUE} "" _VERSION_1 "." _VERSION_2 "." _VERSION_3 "." _VERSION_4
+	!ifndef _VERSION_1
+		!define _VERSION_1 0
+	!else if `${_VERSION_1}` == ``
+		!define /redef _VERSION_1 0
+	!endif
+	!ifndef _VERSION_2
+		!define _VERSION_2 0
+	!else if `${_VERSION_2}` == ``
+		!define /redef _VERSION_2 0
+	!endif
+	!ifndef _VERSION_3
+		!define _VERSION_3 0
+	!else if `${_VERSION_3}` == ``
+		!define /redef _VERSION_3 0
+	!endif
+	!ifndef _VERSION_4
+		!define _VERSION_4 0
+	!else if `${_VERSION_4}` == ``
+		!define /redef _VERSION_4 0
+	!endif
+	!define ${_OUTPUT_SYMBOL} ${_VERSION_1}.${_VERSION_2}.${_VERSION_3}.${_VERSION_4}
+	!undef _VERSION_1
+	!undef _VERSION_2
+	!undef _VERSION_3
+	!undef _VERSION_4
+!macroend
+!define VersionCompleteXXXX `!insertmacro VersionCompleteXXXX`
\ No newline at end of file
diff --git a/packaging/win32/macros/ifexist.nsh b/packaging/win32/macros/ifexist.nsh
new file mode 100644
index 000000000..f14236c2e
--- /dev/null
+++ b/packaging/win32/macros/ifexist.nsh
@@ -0,0 +1,21 @@
+; See http://nsis.sourceforge.net/Check_if_a_file_exists_at_compile_time for documentation
+!macro !ifexist _FILE_NAME
+	!tempfile _TEMPFILE
+	!system `if exist "${_FILE_NAME}" echo !define _FILE_EXISTS > "${_TEMPFILE}"`
+	!include `${_TEMPFILE}`
+	!delfile `${_TEMPFILE}`
+	!undef _TEMPFILE
+	!ifdef _FILE_EXISTS
+		!undef _FILE_EXISTS
+!macroend
+!define !ifexist "!insertmacro !ifexist"
+!macro !ifnexist _FILE_NAME
+	!tempfile _TEMPFILE
+	!system `if not exist "${_FILE_NAME}" echo !define _FILE_EXISTS > "${_TEMPFILE}"`
+	!include `${_TEMPFILE}`
+	!delfile `${_TEMPFILE}`
+	!undef _TEMPFILE
+	!ifdef _FILE_EXISTS
+		!undef _FILE_EXISTS
+!macroend
+!define !ifnexist "!insertmacro !ifnexist"