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website/node_modules/npm/node_modules/cmd-shim/index.js

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+// 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> %*
+
+module.exports = cmdShim
+cmdShim.ifExists = cmdShimIfExists
+
+var fs = require("graceful-fs")
+
+var mkdir = require("mkdirp")
+  , path = require("path")
+  , shebangExpr = /^#\!\s*(?:\/usr\/bin\/env)?\s*([^ \t]+)(.*)$/
+
+function cmdShimIfExists (from, to, cb) {
+  fs.stat(from, function (er) {
+    if (er) return cb()
+    cmdShim(from, to, cb)
+  })
+}
+
+// Try to unlink, but ignore errors.
+// Any problems will surface later.
+function rm (path, cb) {
+  fs.unlink(path, function(er) {
+    cb()
+  })
+}
+
+function cmdShim (from, to, cb) {
+  fs.stat(from, function (er, stat) {
+    if (er)
+      return cb(er)
+
+    cmdShim_(from, to, cb)
+  })
+}
+
+function cmdShim_ (from, to, cb) {
+  var then = times(2, next, cb)
+  rm(to, then)
+  rm(to + ".cmd", then)
+
+  function next(er) {
+    writeShim(from, to, cb)
+  }
+}
+
+function writeShim (from, to, cb) {
+  // make a cmd file and a sh script
+  // First, check if the bin is a #! of some sort.
+  // If not, then assume it's something that'll be compiled, or some other
+  // sort of script, and just call it directly.
+  mkdir(path.dirname(to), function (er) {
+    if (er)
+      return cb(er)
+    fs.readFile(from, "utf8", function (er, data) {
+      if (er) return writeShim_(from, to, null, null, cb)
+      var firstLine = data.trim().split(/\r*\n/)[0]
+        , shebang = firstLine.match(shebangExpr)
+      if (!shebang) return writeShim_(from, to, null, null, cb)
+      var prog = shebang[1]
+        , args = shebang[2] || ""
+      return writeShim_(from, to, prog, args, cb)
+    })
+  })
+}
+
+function writeShim_ (from, to, prog, args, cb) {
+  var shTarget = path.relative(path.dirname(to), from)
+    , target = shTarget.split("/").join("\\")
+    , longProg
+    , shProg = prog && prog.split("\\").join("/")
+    , shLongProg
+  shTarget = shTarget.split("\\").join("/")
+  args = args || ""
+  if (!prog) {
+    prog = "\"%~dp0\\" + target + "\""
+    shProg = "\"$basedir/" + shTarget + "\""
+    args = ""
+    target = ""
+    shTarget = ""
+  } else {
+    longProg = "\"%~dp0\\" + prog + ".exe\""
+    shLongProg = "\"$basedir/" + prog + "\""
+    target = "\"%~dp0\\" + target + "\""
+    shTarget = "\"$basedir/" + shTarget + "\""
+  }
+
+  // @IF EXIST "%~dp0\node.exe" (
+  //   "%~dp0\node.exe" "%~dp0\.\node_modules\npm\bin\npm-cli.js" %*
+  // ) ELSE (
+  //   SETLOCAL
+  //   SET PATHEXT=%PATHEXT:;.JS;=;%
+  //   node "%~dp0\.\node_modules\npm\bin\npm-cli.js" %*
+  // )
+  var cmd
+  if (longProg) {
+    cmd = "@IF EXIST " + longProg + " (\r\n"
+        + "  " + longProg + " " + args + " " + target + " %*\r\n"
+        + ") ELSE (\r\n"
+        + "  @SETLOCAL\r\n"
+        + "  @SET PATHEXT=%PATHEXT:;.JS;=;%\r\n"
+        + "  " + prog + " " + args + " " + target + " %*\r\n"
+        + ")"
+  } else {
+    cmd = "@" + prog + " " + args + " " + target + " %*\r\n"
+  }
+
+  // #!/bin/sh
+  // basedir=`dirname "$0"`
+  //
+  // case `uname` in
+  //     *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
+  // esac
+  //
+  // if [ -x "$basedir/node.exe" ]; then
+  //   "$basedir/node.exe" "$basedir/node_modules/npm/bin/npm-cli.js" "$@"
+  //   ret=$?
+  // else
+  //   node "$basedir/node_modules/npm/bin/npm-cli.js" "$@"
+  //   ret=$?
+  // fi
+  // exit $ret
+
+  var sh = "#!/bin/sh\n"
+
+  if (shLongProg) {
+    sh = sh
+        + "basedir=$(dirname \"$(echo \"$0\" | sed -e 's,\\\\,/,g')\")\n"
+        + "\n"
+        + "case `uname` in\n"
+        + "    *CYGWIN*) basedir=`cygpath -w \"$basedir\"`;;\n"
+        + "esac\n"
+        + "\n"
+
+    sh = sh
+       + "if [ -x "+shLongProg+" ]; then\n"
+       + "  " + shLongProg + " " + args + " " + shTarget + " \"$@\"\n"
+       + "  ret=$?\n"
+       + "else \n"
+       + "  " + shProg + " " + args + " " + shTarget + " \"$@\"\n"
+       + "  ret=$?\n"
+       + "fi\n"
+       + "exit $ret\n"
+  } else {
+    sh = shProg + " " + args + " " + shTarget + " \"$@\"\n"
+       + "exit $?\n"
+  }
+
+  var then = times(2, next, cb)
+  fs.writeFile(to + ".cmd", cmd, "utf8", then)
+  fs.writeFile(to, sh, "utf8", then)
+  function next () {
+    chmodShim(to, cb)
+  }
+}
+
+function chmodShim (to, cb) {
+  var then = times(2, cb, cb)
+  fs.chmod(to, 0755, then)
+  fs.chmod(to + ".cmd", 0755, then)
+}
+
+function times(n, ok, cb) {
+  var errState = null
+  return function(er) {
+    if (!errState) {
+      if (er)
+        cb(errState = er)
+      else if (--n === 0)
+        ok()
+    }
+  }
+}