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1// On windows, create a .cmd file.2// Read the #! in the file to see what it uses.  The vast majority3// of the time, this will be either:4// "#!/usr/bin/env <prog> <args...>"5// or:6// "#!<prog> <args...>"7//8// Write a binroot/pkg.bin + ".cmd" file that has this line in it:9// @<prog> <args...> %dp0%<target> %*10 11const {12  chmod,13  mkdir,14  readFile,15  stat,16  unlink,17  writeFile,18} = require('fs/promises')19 20const { dirname, relative } = require('path')21const toBatchSyntax = require('./to-batch-syntax')22// linting disabled because this regex is really long23// eslint-disable-next-line max-len24const shebangExpr = /^#!\s*(?:\/usr\/bin\/env\s+(?:-S\s+)?((?:[^ \t=]+=[^ \t=]+\s+)*))?([^ \t]+)(.*)$/25 26const cmdShimIfExists = (from, to) =>27  stat(from).then(() => cmdShim(from, to), () => {})28 29// Try to unlink, but ignore errors.30// Any problems will surface later.31const rm = path => unlink(path).catch(() => {})32 33const cmdShim = (from, to) =>34  stat(from).then(() => cmdShim_(from, to))35 36const cmdShim_ = (from, to) => Promise.all([37  rm(to),38  rm(to + '.cmd'),39  rm(to + '.ps1'),40]).then(() => writeShim(from, to))41 42const writeShim = (from, to) =>43  // make a cmd file and a sh script44  // First, check if the bin is a #! of some sort.45  // If not, then assume it's something that'll be compiled, or some other46  // sort of script, and just call it directly.47  mkdir(dirname(to), { recursive: true })48    .then(() => readFile(from, 'utf8'))49    .then(data => {50      const firstLine = data.trim().split(/\r*\n/)[0]51      const shebang = firstLine.match(shebangExpr)52      if (!shebang) {53        return writeShim_(from, to)54      }55      const vars = shebang[1] || ''56      const prog = shebang[2]57      const args = shebang[3] || ''58      return writeShim_(from, to, prog, args, vars)59    }, () => writeShim_(from, to))60 61const writeShim_ = (from, to, prog, args, variables) => {62  let shTarget = relative(dirname(to), from)63  let target = shTarget.split('/').join('\\')64  let longProg65  let shProg = prog && prog.split('\\').join('/')66  let shLongProg67  let pwshProg = shProg && `"${shProg}$exe"`68  let pwshLongProg69  shTarget = shTarget.split('\\').join('/')70  args = args || ''71  variables = variables || ''72  if (!prog) {73    prog = `"%dp0%\\${target}"`74    shProg = `"$basedir/${shTarget}"`75    pwshProg = shProg76    args = ''77    target = ''78    shTarget = ''79  } else {80    longProg = `"%dp0%\\${prog}.exe"`81    shLongProg = `"$basedir/${prog}"`82    pwshLongProg = `"$basedir/${prog}$exe"`83    target = `"%dp0%\\${target}"`84    shTarget = `"$basedir/${shTarget}"`85  }86 87  // Subroutine trick to fix https://github.com/npm/cmd-shim/issues/1088  // and https://github.com/npm/cli/issues/96989  const head = '@ECHO off\r\n' +90    'GOTO start\r\n' +91    ':find_dp0\r\n' +92    'SET dp0=%~dp0\r\n' +93    'EXIT /b\r\n' +94    ':start\r\n' +95    'SETLOCAL\r\n' +96    'CALL :find_dp0\r\n'97 98  let cmd99  if (longProg) {100    shLongProg = shLongProg.trim()101    args = args.trim()102    const variablesBatch = toBatchSyntax.convertToSetCommands(variables)103    cmd = head104        + variablesBatch105        + '\r\n'106        + `IF EXIST ${longProg} (\r\n`107        + `  SET "_prog=${longProg.replace(/(^")|("$)/g, '')}"\r\n`108        + ') ELSE (\r\n'109        + `  SET "_prog=${prog.replace(/(^")|("$)/g, '')}"\r\n`110        + '  SET PATHEXT=%PATHEXT:;.JS;=;%\r\n'111        + ')\r\n'112        + '\r\n'113        // prevent "Terminate Batch Job? (Y/n)" message114        // https://github.com/npm/cli/issues/969#issuecomment-737496588115        + 'endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & '116        + `"%_prog%" ${args} ${target} %*\r\n`117  } else {118    cmd = `${head}${prog} ${args} ${target} %*\r\n`119  }120 121  // #!/bin/sh122  // basedir=`dirname "$0"`123  //124  // case `uname` in125  //     *CYGWIN*|*MINGW*|*MSYS*)126  //       if command -v cygpath > /dev/null 2>&1; then127  //           basedir=`cygpath -w "$basedir"`128  //       fi129  //     ;;130  // esac131  //132  // if [ -x "$basedir/node.exe" ]; then133  //   exec "$basedir/node.exe" "$basedir/node_modules/npm/bin/npm-cli.js" "$@"134  // else135  //   exec node "$basedir/node_modules/npm/bin/npm-cli.js" "$@"136  // fi137 138  let sh = '#!/bin/sh\n'139 140  sh = sh141      + `basedir=$(dirname "$(echo "$0" | sed -e 's,\\\\,/,g')")\n`142      + '\n'143      + 'case `uname` in\n'144      + '    *CYGWIN*|*MINGW*|*MSYS*)\n'145      + '        if command -v cygpath > /dev/null 2>&1; then\n'146      + '            basedir=`cygpath -w "$basedir"`\n'147      + '        fi\n'148      + '    ;;\n'149      + 'esac\n'150      + '\n'151 152  if (shLongProg) {153    sh = sh154       + `if [ -x ${shLongProg} ]; then\n`155       + `  exec ${variables}${shLongProg} ${args} ${shTarget} "$@"\n`156       + 'else \n'157       + `  exec ${variables}${shProg} ${args} ${shTarget} "$@"\n`158       + 'fi\n'159  } else {160    sh = sh161       + `exec ${shProg} ${args} ${shTarget} "$@"\n`162  }163 164  // #!/usr/bin/env pwsh165  // $basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent166  //167  // $ret=0168  // $exe = ""169  // if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {170  //   # Fix case when both the Windows and Linux builds of Node171  //   # are installed in the same directory172  //   $exe = ".exe"173  // }174  // if (Test-Path "$basedir/node") {175  //   # Suport pipeline input176  //   if ($MyInvocation.ExpectingInput) {177  //     input | & "$basedir/node$exe" "$basedir/node_modules/npm/bin/npm-cli.js" $args178  //   } else {179  //     & "$basedir/node$exe" "$basedir/node_modules/npm/bin/npm-cli.js" $args180  //   }181  //   $ret=$LASTEXITCODE182  // } else {183  //   # Support pipeline input184  //   if ($MyInvocation.ExpectingInput) {185  //     $input | & "node$exe" "$basedir/node_modules/npm/bin/npm-cli.js" $args186  //   } else {187  //     & "node$exe" "$basedir/node_modules/npm/bin/npm-cli.js" $args188  //   }189  //   $ret=$LASTEXITCODE190  // }191  // exit $ret192  let pwsh = '#!/usr/bin/env pwsh\n'193           + '$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent\n'194           + '\n'195           + '$exe=""\n'196           + 'if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {\n'197           + '  # Fix case when both the Windows and Linux builds of Node\n'198           + '  # are installed in the same directory\n'199           + '  $exe=".exe"\n'200           + '}\n'201  if (shLongProg) {202    pwsh = pwsh203         + '$ret=0\n'204         + `if (Test-Path ${pwshLongProg}) {\n`205         + '  # Support pipeline input\n'206         + '  if ($MyInvocation.ExpectingInput) {\n'207         + `    $input | & ${pwshLongProg} ${args} ${shTarget} $args\n`208         + '  } else {\n'209         + `    & ${pwshLongProg} ${args} ${shTarget} $args\n`210         + '  }\n'211         + '  $ret=$LASTEXITCODE\n'212         + '} else {\n'213         + '  # Support pipeline input\n'214         + '  if ($MyInvocation.ExpectingInput) {\n'215         + `    $input | & ${pwshProg} ${args} ${shTarget} $args\n`216         + '  } else {\n'217         + `    & ${pwshProg} ${args} ${shTarget} $args\n`218         + '  }\n'219         + '  $ret=$LASTEXITCODE\n'220         + '}\n'221         + 'exit $ret\n'222  } else {223    pwsh = pwsh224         + '# Support pipeline input\n'225         + 'if ($MyInvocation.ExpectingInput) {\n'226         + `  $input | & ${pwshProg} ${args} ${shTarget} $args\n`227         + '} else {\n'228         + `  & ${pwshProg} ${args} ${shTarget} $args\n`229         + '}\n'230         + 'exit $LASTEXITCODE\n'231  }232 233  return Promise.all([234    writeFile(to + '.ps1', pwsh, 'utf8'),235    writeFile(to + '.cmd', cmd, 'utf8'),236    writeFile(to, sh, 'utf8'),237  ]).then(() => chmodShim(to))238}239 240const chmodShim = to => Promise.all([241  chmod(to, 0o755),242  chmod(to + '.cmd', 0o755),243  chmod(to + '.ps1', 0o755),244])245 246module.exports = cmdShim247cmdShim.ifExists = cmdShimIfExists248