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Mini Shell
Mini Shell
// On windows, create a .cmd file.
// Read the #! in the file to see what it uses. The vast majority
// of the time, this will be either:
// "#!/usr/bin/env <prog> <args...>"
// or:
// "#!<prog> <args...>"
//
// Write a binroot/pkg.bin + ".cmd" file that has this line in it:
// @<prog> <args...> %dp0%<target> %*
const { promisify } = require('util')
const fs = require('fs')
const writeFile = promisify(fs.writeFile)
const readFile = promisify(fs.readFile)
const chmod = promisify(fs.chmod)
const stat = promisify(fs.stat)
const unlink = promisify(fs.unlink)
const { dirname, relative } = require('path')
const mkdir = require('mkdirp-infer-owner')
const toBatchSyntax = require('./to-batch-syntax')
const shebangExpr = /^#!\s*(?:\/usr\/bin\/env\s*((?:[^ \t=]+=[^ \t=]+\s+)*))?([^ \t]+)(.*)$/
const cmdShimIfExists = (from, to) =>
stat(from).then(() => cmdShim(from, to), () => {})
// Try to unlink, but ignore errors.
// Any problems will surface later.
const rm = path => unlink(path).catch(() => {})
const cmdShim = (from, to) =>
stat(from).then(() => cmdShim_(from, to))
const cmdShim_ = (from, to) => Promise.all([
rm(to),
rm(to + '.cmd'),
rm(to + '.ps1'),
]).then(() => writeShim(from, to))
const writeShim = (from, to) =>
// make a cmd file and a sh script
// First, check if the bin is a #! of some sort.
// If not, then assume it's something that'll be compiled, or some other
// sort of script, and just call it directly.
mkdir(dirname(to))
.then(() => readFile(from, 'utf8'))
.then(data => {
const firstLine = data.trim().split(/\r*\n/)[0]
const shebang = firstLine.match(shebangExpr)
if (!shebang) {
return writeShim_(from, to)
}
const vars = shebang[1] || ''
const prog = shebang[2]
const args = shebang[3] || ''
return writeShim_(from, to, prog, args, vars)
}, er => writeShim_(from, to))
const writeShim_ = (from, to, prog, args, variables) => {
let shTarget = relative(dirname(to), from)
let target = shTarget.split('/').join('\\')
let longProg
let shProg = prog && prog.split('\\').join('/')
let shLongProg
let pwshProg = shProg && `"${shProg}$exe"`
let pwshLongProg
shTarget = shTarget.split('\\').join('/')
args = args || ''
variables = variables || ''
if (!prog) {
prog = `"%dp0%\\${target}"`
shProg = `"$basedir/${shTarget}"`
pwshProg = shProg
args = ''
target = ''
shTarget = ''
} else {
longProg = `"%dp0%\\${prog}.exe"`
shLongProg = `"$basedir/${prog}"`
pwshLongProg = `"$basedir/${prog}$exe"`
target = `"%dp0%\\${target}"`
shTarget = `"$basedir/${shTarget}"`
}
// Subroutine trick to fix https://github.com/npm/cmd-shim/issues/10
// and https://github.com/npm/cli/issues/969
const head = '@ECHO off\r\n' +
'GOTO start\r\n' +
':find_dp0\r\n' +
'SET dp0=%~dp0\r\n' +
'EXIT /b\r\n' +
':start\r\n' +
'SETLOCAL\r\n' +
'CALL :find_dp0\r\n'
let cmd
if (longProg) {
shLongProg = shLongProg.trim()
args = args.trim()
const variablesBatch = toBatchSyntax.convertToSetCommands(variables)
cmd = head
+ variablesBatch
+ '\r\n'
+ `IF EXIST ${longProg} (\r\n`
+ ` SET "_prog=${longProg.replace(/(^")|("$)/g, '')}"\r\n`
+ ') ELSE (\r\n'
+ ` SET "_prog=${prog.replace(/(^")|("$)/g, '')}"\r\n`
+ ' SET PATHEXT=%PATHEXT:;.JS;=;%\r\n'
+ ')\r\n'
+ '\r\n'
// prevent "Terminate Batch Job? (Y/n)" message
// https://github.com/npm/cli/issues/969#issuecomment-737496588
+ 'endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & '
+ `"%_prog%" ${args} ${target} %*\r\n`
} else {
cmd = `${head}${prog} ${args} ${target} %*\r\n`
}
// #!/bin/sh
// basedir=`dirname "$0"`
//
// case `uname` in
// *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
// esac
//
// if [ -x "$basedir/node.exe" ]; then
// exec "$basedir/node.exe" "$basedir/node_modules/npm/bin/npm-cli.js" "$@"
// else
// exec node "$basedir/node_modules/npm/bin/npm-cli.js" "$@"
// fi
let sh = '#!/bin/sh\n'
sh = sh
+ `basedir=$(dirname "$(echo "$0" | sed -e 's,\\\\,/,g')")\n`
+ '\n'
+ 'case `uname` in\n'
+ ' *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;\n'
+ 'esac\n'
+ '\n'
if (shLongProg) {
sh = sh
+ `if [ -x ${shLongProg} ]; then\n`
+ ` exec ${variables}${shLongProg} ${args} ${shTarget} "$@"\n`
+ 'else \n'
+ ` exec ${variables}${shProg} ${args} ${shTarget} "$@"\n`
+ 'fi\n'
} else {
sh = sh
+ `exec ${shProg} ${args} ${shTarget} "$@"\n`
}
// #!/usr/bin/env pwsh
// $basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
//
// $ret=0
// $exe = ""
// if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
// # Fix case when both the Windows and Linux builds of Node
// # are installed in the same directory
// $exe = ".exe"
// }
// if (Test-Path "$basedir/node") {
// # Suport pipeline input
// if ($MyInvocation.ExpectingInput) {
// input | & "$basedir/node$exe" "$basedir/node_modules/npm/bin/npm-cli.js" $args
// } else {
// & "$basedir/node$exe" "$basedir/node_modules/npm/bin/npm-cli.js" $args
// }
// $ret=$LASTEXITCODE
// } else {
// # Support pipeline input
// if ($MyInvocation.ExpectingInput) {
// $input | & "node$exe" "$basedir/node_modules/npm/bin/npm-cli.js" $args
// } else {
// & "node$exe" "$basedir/node_modules/npm/bin/npm-cli.js" $args
// }
// $ret=$LASTEXITCODE
// }
// exit $ret
let pwsh = '#!/usr/bin/env pwsh\n'
+ '$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent\n'
+ '\n'
+ '$exe=""\n'
+ 'if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {\n'
+ ' # Fix case when both the Windows and Linux builds of Node\n'
+ ' # are installed in the same directory\n'
+ ' $exe=".exe"\n'
+ '}\n'
if (shLongProg) {
pwsh = pwsh
+ '$ret=0\n'
+ `if (Test-Path ${pwshLongProg}) {\n`
+ ' # Support pipeline input\n'
+ ' if ($MyInvocation.ExpectingInput) {\n'
+ ` $input | & ${pwshLongProg} ${args} ${shTarget} $args\n`
+ ' } else {\n'
+ ` & ${pwshLongProg} ${args} ${shTarget} $args\n`
+ ' }\n'
+ ' $ret=$LASTEXITCODE\n'
+ '} else {\n'
+ ' # Support pipeline input\n'
+ ' if ($MyInvocation.ExpectingInput) {\n'
+ ` $input | & ${pwshProg} ${args} ${shTarget} $args\n`
+ ' } else {\n'
+ ` & ${pwshProg} ${args} ${shTarget} $args\n`
+ ' }\n'
+ ' $ret=$LASTEXITCODE\n'
+ '}\n'
+ 'exit $ret\n'
} else {
pwsh = pwsh
+ '# Support pipeline input\n'
+ 'if ($MyInvocation.ExpectingInput) {\n'
+ ` $input | & ${pwshProg} ${args} ${shTarget} $args\n`
+ '} else {\n'
+ ` & ${pwshProg} ${args} ${shTarget} $args\n`
+ '}\n'
+ 'exit $LASTEXITCODE\n'
}
return Promise.all([
writeFile(to + '.ps1', pwsh, 'utf8'),
writeFile(to + '.cmd', cmd, 'utf8'),
writeFile(to, sh, 'utf8'),
]).then(() => chmodShim(to))
}
const chmodShim = to => Promise.all([
chmod(to, 0o755),
chmod(to + '.cmd', 0o755),
chmod(to + '.ps1', 0o755),
])
module.exports = cmdShim
cmdShim.ifExists = cmdShimIfExists
Zerion Mini Shell 1.0