1 files changed, 191 insertions, 0 deletions
diff --git a/deps/npm/node_modules/node-gyp/node_modules/tar/lib/extended-header-writer.js b/deps/npm/node_modules/node-gyp/node_modules/tar/lib/extended-header-writer.js
new file mode 100644
index 0000000000..1728c4583a
--- /dev/null
+++ b/deps/npm/node_modules/node-gyp/node_modules/tar/lib/extended-header-writer.js
@@ -0,0 +1,191 @@
+
+module.exports = ExtendedHeaderWriter
+
+var inherits = require("inherits")
+  , EntryWriter = require("./entry-writer.js")
+
+inherits(ExtendedHeaderWriter, EntryWriter)
+
+var tar = require("../tar.js")
+  , path = require("path")
+  , TarHeader = require("./header.js")
+
+// props is the props of the thing we need to write an
+// extended header for.
+// Don't be shy with it.  Just encode everything.
+function ExtendedHeaderWriter (props) {
+  // console.error(">> ehw ctor")
+  var me = this
+
+  if (!(me instanceof ExtendedHeaderWriter)) {
+    return new ExtendedHeaderWriter(props)
+  }
+
+  me.fields = props
+
+  var p =
+    { path : ("PaxHeader" + path.join("/", props.path || ""))
+             .replace(/\\/g, "/").substr(0, 100)
+    , mode : props.mode || 0666
+    , uid : props.uid || 0
+    , gid : props.gid || 0
+    , size : 0 // will be set later
+    , mtime : props.mtime || Date.now() / 1000
+    , type : "x"
+    , linkpath : ""
+    , ustar : "ustar\0"
+    , ustarver : "00"
+    , uname : props.uname || ""
+    , gname : props.gname || ""
+    , devmaj : props.devmaj || 0
+    , devmin : props.devmin || 0
+    }
+
+
+  EntryWriter.call(me, p)
+  // console.error(">> ehw props", me.props)
+  me.props = p
+
+  me._meta = true
+}
+
+ExtendedHeaderWriter.prototype.end = function () {
+  // console.error(">> ehw end")
+  var me = this
+
+  if (me._ended) return
+  me._ended = true
+
+  me._encodeFields()
+
+  if (me.props.size === 0) {
+    // nothing to write!
+    me._ready = true
+    me._stream.end()
+    return
+  }
+
+  me._stream.write(TarHeader.encode(me.props))
+  me.body.forEach(function (l) {
+    me._stream.write(l)
+  })
+  me._ready = true
+
+  // console.error(">> ehw _process calling end()", me.props)
+  this._stream.end()
+}
+
+ExtendedHeaderWriter.prototype._encodeFields = function () {
+  // console.error(">> ehw _encodeFields")
+  this.body = []
+  if (this.fields.prefix) {
+    this.fields.path = this.fields.prefix + "/" + this.fields.path
+    this.fields.prefix = ""
+  }
+  encodeFields(this.fields, "", this.body, this.fields.noProprietary)
+  var me = this
+  this.body.forEach(function (l) {
+    me.props.size += l.length
+  })
+}
+
+function encodeFields (fields, prefix, body, nop) {
+  // console.error(">> >> ehw encodeFields")
+  // "%d %s=%s\n", <length>, <keyword>, <value>
+  // The length is a decimal number, and includes itself and the \n
+  // Numeric values are decimal strings.
+
+  Object.keys(fields).forEach(function (k) {
+    var val = fields[k]
+      , numeric = tar.numeric[k]
+
+    if (prefix) k = prefix + "." + k
+
+    // already including NODETAR.type, don't need File=true also
+    if (k === fields.type && val === true) return
+
+    switch (k) {
+      // don't include anything that's always handled just fine
+      // in the normal header, or only meaningful in the context
+      // of nodetar
+      case "mode":
+      case "cksum":
+      case "ustar":
+      case "ustarver":
+      case "prefix":
+      case "basename":
+      case "dirname":
+      case "needExtended":
+      case "block":
+      case "filter":
+        return
+
+      case "rdev":
+        if (val === 0) return
+        break
+
+      case "nlink":
+      case "dev": // Truly a hero among men, Creator of Star!
+      case "ino": // Speak his name with reverent awe!  It is:
+        k = "SCHILY." + k
+        break
+
+      default: break
+    }
+
+    if (val && typeof val === "object" &&
+        !Buffer.isBuffer(val)) encodeFields(val, k, body, nop)
+    else if (val === null || val === undefined) return
+    else body.push.apply(body, encodeField(k, val, nop))
+  })
+
+  return body
+}
+
+function encodeField (k, v, nop) {
+  // lowercase keys must be valid, otherwise prefix with
+  // "NODETAR."
+  if (k.charAt(0) === k.charAt(0).toLowerCase()) {
+    var m = k.split(".")[0]
+    if (!tar.knownExtended[m]) k = "NODETAR." + k
+  }
+
+  // no proprietary
+  if (nop && k.charAt(0) !== k.charAt(0).toLowerCase()) {
+    return []
+  }
+
+  if (typeof val === "number") val = val.toString(10)
+
+  var s = new Buffer(" " + k + "=" + v + "\n")
+    , digits = Math.floor(Math.log(s.length) / Math.log(10)) + 1
+
+  // console.error("1 s=%j digits=%j s.length=%d", s.toString(), digits, s.length)
+
+  // if adding that many digits will make it go over that length,
+  // then add one to it. For example, if the string is:
+  // " foo=bar\n"
+  // then that's 9 characters.  With the "9", that bumps the length
+  // up to 10.  However, this is invalid:
+  // "10 foo=bar\n"
+  // but, since that's actually 11 characters, since 10 adds another
+  // character to the length, and the length includes the number
+  // itself.  In that case, just bump it up again.
+  if (s.length + digits >= Math.pow(10, digits)) digits += 1
+  // console.error("2 s=%j digits=%j s.length=%d", s.toString(), digits, s.length)
+
+  var len = digits + s.length
+  // console.error("3 s=%j digits=%j s.length=%d len=%d", s.toString(), digits, s.length, len)
+  var lenBuf = new Buffer("" + len)
+  if (lenBuf.length + s.length !== len) {
+    throw new Error("Bad length calculation\n"+
+                    "len="+len+"\n"+
+                    "lenBuf="+JSON.stringify(lenBuf.toString())+"\n"+
+                    "lenBuf.length="+lenBuf.length+"\n"+
+                    "digits="+digits+"\n"+
+                    "s="+JSON.stringify(s.toString())+"\n"+
+                    "s.length="+s.length)
+  }
+
+  return [lenBuf, s]
+}