Merge pull request #1758 from xiazeyu/master

lib to check init.bat's custom args

README.md

@@ -44,7 +44,7 @@ The Cmder's user interface is also designed to be more eye pleasing, and you can
 | Argument            | Description                                                                 |
 | ------------------- | -----------------------------------------------------------------------     |
 | `/C [user_root_path]` | Individual user Cmder root folder.  Example: `%userprofile%\cmder_config` |
-| `/SINGLE`             | Start Cmder is single mode.                                             |
+| `/SINGLE`             | Start Cmder in single mode.                                               |
 | `/START [start_path]` | Folder path to start in.                                                  |
 | `/TASK [task_name]`   | Task to start after launch.                                               |
 
@@ -148,6 +148,7 @@ You may find some Monokai color schemes for mintty to match Cmder [here](https:/
 | `/svn_ssh [path to ssh.exe]`    | Define `%SVN_SSH%` so we can use git svn with ssh svn repositories.                              | `%GIT_INSTALL_ROOT%\bin\ssh.exe`      |
 | `/user_aliases [file path]`     | File path pointing to user aliases.                                                              | `%CMDER_ROOT%\config\user-liases.cmd` |
 | `/v`                            | Enables verbose output.                                                                          | not set                               |
+| (custom arguments)              | User defined arguments processed by `cexec`. Type `cexec /?` for more useage.                    | not set                               |
 
 ### Cmder Shell User Config
 Single user portable configuration is possible using the cmder specific shell config files.  Edit the below files to add your own configuration:
@@ -246,7 +247,56 @@ Uncomment and edit the below line in the script to use Cmder config even when la
 # CMDER_ROOT=${USERPROFILE}/cmder  # This is not required if launched from Cmder.
 ```
 
+### Customizing user sessions using `init.bat` custom arguments. 
+
+You can pass custom arguments to `init.bat` and use `cexec.cmd` in your `user_profile.cmd` to evaluate these
+arguments then execute commands based on a particular flag being detected or not.
+
+`init.bat` creates two shortcuts for using `cexec.cmd` in your profile scripts.
+
+#### `%ccall%` - Evaluates flags, runs commands if found,  and returns to the calling script and continues.
+
+```
+ccall=call C:\Users\user\cmderdev\vendor\bin\cexec.cmd
+```  
+
+Example: `%ccall% /startnotepad start notepad.exe`
+
+#### `%cexec%` - Evaluates flags, runs commands if found, and does not return to the calling script.
+
+```
+cexec=C:\Users\user\cmderdev\vendor\bin\cexec.cmd
+```
+
+Example: `%cexec% /startnotepad start notepad.exe`
+
+It is useful when you have multiple tasks to execute `cmder` and need it to initialize
+the session differently depending on the task chosen.
+
+To conditionally start `notepad.exe` when you start a specific `cmder` task:
+
+* Press <kbd>win</kbd>+<kbd>alt</kbd>+<kbd>t</kbd>
+* Click `+` to add a new task.
+* Add the below to the `Commands` block:
+
+  ```batch
+  
+  cmd.exe /k ""%ConEmuDir%\..\init.bat" /startnotepad"
+  
+  ```
+
+* Add the below to your `%cmder_root%\config\user_profile.cmd`
+
+  ```batch
+  
+  %ccall% "/startNotepad" "start" "notepad.exe"`
+  
+  ```
+
+To see detailed usage of `cexec`, type `cexec /?` in cmder.
+
 ### Integrating Cmder with [Hyper](https://github.com/zeit/hyper), [Microsoft VS Code](https://code.visualstudio.com/), and your favorite IDEs
+
 Cmder by default comes with a vendored ConEmu installation as the underlying terminal emulator, as stated [here](https://conemu.github.io/en/cmder.html).
 
 However, Cmder can in fact run in a variety of other terminal emulators, and even integrated IDEs. Assuming you have the latest version of Cmder, follow the following instructions to get Cmder working with your own terminal emulator.

vendor/bin/cexec.cmd

@@ -0,0 +1,135 @@
+@echo off
+setlocal
+
+if "%~1" equ "" goto :wrongSyntax
+
+if not defined CMDER_USER_FLAGS (
+  :: in case nothing was passed to %CMDER_USER_FLAGS%
+  set "CMDER_USER_FLAGS= "
+)
+
+set "feNot=false"
+goto :parseArgument
+
+:doShift
+  shift
+
+:parseArgument
+set "currenArgu=%~1"
+if /i "%currenArgu%" equ "/setPath" (
+  :: set %flag_exists% shortcut
+  endlocal
+  set "ccall=call %~dp0cexec.cmd"
+  set "cexec=%~dp0cexec.cmd"
+) else if /i "%currenArgu%" == "/?" (
+  goto :help
+) else if /i "%currenArgu%" equ "/help" (
+  goto :help
+) else if /i "%currenArgu%" equ "/h" (
+  goto :help
+) else if /i "%currenArgu%" equ "NOT" (
+  set "feNot=true"
+  goto :doShift
+) else (
+  if "%~1" equ "" goto :wrongSyntax
+  if "%~2" equ "" goto :wrongSyntax
+  set "feFlagName=%~1"
+  set "feCommand=%~2"
+  if not "%~3" equ "" (
+    set "feParam=%~3"
+  )
+  goto :detect
+)
+
+:detect
+:: to avoid erroneous deteciton like "/do" "/doNOT", which both have a "/do"
+:: we added a space after the flag name, like "/do ", which won't match "/doN"
+set "feFlagName=%feFlagName% "
+:: echo.
+:: echo %CMDER_USER_FLAGS%
+:: echo %feNOT%
+:: echo %feFlagName%
+:: echo %feCommand%
+:: echo %feParam%
+:: echo.
+echo %CMDER_USER_FLAGS% | find /i "%feFlagName%">nul
+if "%ERRORLEVEL%" == "0" (
+  if "%feNOT%" == "false" (
+    endlocal && call %feCommand% %feParam%
+    exit /b 0
+  )
+) else (
+  if "%feNOT%" == "true" (
+    endlocal && call %feCommand% %feParam%
+    exit /b 0
+  )
+)
+endlocal
+exit /b 1
+
+:wrongSyntax
+echo The syntax of the command is incorrect.
+echo.
+echo use /? for help
+echo.
+endlocal
+exit /b
+
+:help
+echo.
+echo CExec - Conditional Exec
+echo.
+echo Handles with custom arguments for cmder's init.bat.
+echo   written by xiazeyu, inspired DRSDavidSoft.
+echo.
+echo Usage:
+echo.
+echo cexec /setPath [NOT] flagName command/program [parameters]
+echo.
+echo   /setPath         Generate a global varibles %%ccall%% and  %%cexec%% for
+echo                    quicker use. Following arguments will be ignored.
+echo.
+echo   NOT              Specifies that cexec should carry out
+echo                    the command only if the flag is missing.
+echo.
+echo   /[flagName]      Specifies which flag name is to detect. It's recommand
+echo                    to use a pair of double quotation marks to wrap
+echo                    your flag name to avoid exceed expectation.
+echo.
+echo   command/program  Specifies the command to carry out if the
+echo                    argument name is detected. It's recommand to
+echo                    use a pair of double quotation marks to
+echo                    wrap your command to avoid exceed expectation.
+echo.
+echo   parameters       These are the parameters passed to the command/program.
+echo                    It's recommand to use a pair of double quotation marks 
+echo                    to wrap your flag name to avoid exceed expectation.
+echo.
+echo Examples:
+echo.
+echo   These examples are expected to be written in %cmder_root%/config/user-profile.cmd
+echo   CExec evaluates the environment varible "CMDER_USER_FLAGS" and conditionally
+echo   caries out actions based on flags that are passed.
+echo.
+echo   Case 1:
+echo.
+echo   The following command in `user_profile.cmd` would execute "notepad.exe" and continue running the `user_profile.cmd`
+echo.
+echo     "%ccall%" "/startNotepad" "start" "notepad.exe"
+echo.
+echo   If you pass parameter to init.bat like:
+echo.
+echo     init.bat /startNotepad
+echo.
+echo   Case 2:
+echo.
+echo   The following command in `user_profile.cmd` would execute "notepad.exe" and stop running the `user_profile.cmd`
+echo.
+echo     "%cexec%" NOT "/dontStartNotepad" "start" "notepad.exe"
+echo.
+echo   UNLESS you pass parameter to init.bat like:
+echo.
+echo     init.bat /dontStartNotepad
+echo.
+endlocal
+exit /b

vendor/init.bat

@@ -10,6 +10,7 @@
 set verbose_output=0
 set debug_output=0
 set max_depth=1
+set "CMDER_USER_FLAGS= "
 
 :: Find root dir
 if not defined CMDER_ROOT (
@@ -27,6 +28,7 @@ if not defined CMDER_ROOT (
 :: Remove trailing '\' from %CMDER_ROOT%
 if "%CMDER_ROOT:~-1%" == "\" SET "CMDER_ROOT=%CMDER_ROOT:~0,-1%"
 
+call "%cmder_root%\vendor\bin\cexec.cmd" /setpath
 call "%cmder_root%\vendor\lib\lib_base"
 call "%cmder_root%\vendor\lib\lib_path"
 call "%cmder_root%\vendor\lib\lib_console"
@@ -80,6 +82,8 @@ call "%cmder_root%\vendor\lib\lib_profile"
     ) else if /i "%1" == "/svn_ssh" (
         set SVN_SSH=%2
         shift
+    ) else (
+      set "CMDER_USER_FLAGS=%1 %CMDER_USER_FLAGS%"
     )
     shift
 goto var_loop
@@ -348,6 +352,11 @@ echo.
 echo :: you can add your plugins to the cmder path like so
 echo :: set "PATH=%%CMDER_ROOT%%\vendor\whatever;%%PATH%%"
 echo.
+echo :: arguments in this batch are passed from init.bat, you can quickly parse them like so:
+echo :: more useage can be seen by typing "cexec /?"
+echo.
+echo :: %%ccall%% "/customOption" "command/program"
+echo.
 echo @echo off
 ) >"%initialConfig%"
 )

vendor/lib/lib_profile.cmd

@@ -44,3 +44,4 @@ exit /b
   )
   popd
   exit /b
+