bops - npm Package Compare versions

Comparing version 0.0.7 to 0.1.0

package.json

 {
   "name": "bops",
-  "version": "0.0.7",
+  "version": "0.1.0",
   "description": "buffer operations",
@@ -43,7 +43,7 @@ "main": "index.js",
     "browsers": [
-      "ie/6..latest",
+      "ie/10..latest",
       "chrome/20..latest",
-      "firefox/10..latest",
+      "firefox/15..latest",
       "safari/latest",
-      "opera/11.0..latest",
+      "opera/11.6..latest",
       "iphone/6",
@@ -50,0 +50,0 @@ "ipad/6"

README.md

 # bops
 
+[![Build Status](https://travis-ci.org/chrisdickinson/tar-parse.png)](https://travis-ci.org/chrisdickinson/tar-parse)
+[![TESTLING](https://ci.testling.com/chrisdickinson/bops.png)](https://ci.testling.com/chrisdickinson/bops)
+[![NPM](https://nodei.co/npm/bops.png?downloads=true&stars=true)](https://nodei.co/npm/bops/)
+
 buffer/typed array agnostic buffer operations.
@@ -4,0 +8,0 @@

test/from.js

@@ -16,6 +16,6 @@ var test = require('tape')
 test('from utf8 works as expected', function(assert) {
-  var buf = binary.from('ƒello 淾淾淾 hello world 淾淾 yep ƒuu 淾', 'utf8')
+  var buf = binary.from('ƒello 淾淾淾 hello world 淾淾 yep ƒuu 淾 \ud83d\ude04', 'utf8')
     , expect
 
-  expect = [198,146,101,108,108,111,32,230,183,190,230,183,190,230,183,190,32,104,101,108,108,111,32,119,111,114,108,100,32,230,183,190,230,183,190,32,121,101,112,32,198,146,117,117,32,230,183,190]
+  expect = [198,146,101,108,108,111,32,230,183,190,230,183,190,230,183,190,32,104,101,108,108,111,32,119,111,114,108,100,32,230,183,190,230,183,190,32,121,101,112,32,198,146,117,117,32,230,183,190,32,0xF0,0x9F,0x98,0x84]
 
@@ -22,0 +22,0 @@ assert.equal(buf.length, expect.length)

typedarray/from.js

@@ -37,23 +37,99 @@ module.exports = from
 function from_utf(str) {
-  var bytes = []
-    , tmp
-    , ch
+  var arr = []
+    , code
 
   for(var i = 0, len = str.length; i < len; ++i) {
-    ch = str.charCodeAt(i)
-    if(ch & 0x80) {
-      tmp = encodeURIComponent(str.charAt(i)).substr(1).split('%')
-      for(var j = 0, jlen = tmp.length; j < jlen; ++j) {
-        bytes[bytes.length] = parseInt(tmp[j], 16)
-      }
-    } else {
-      bytes[bytes.length] = ch 
+    code = fixed_cca(str, i)
+
+    if(code === false) {
+      continue
     }
+
+    if(code < 0x80) {
+      arr[arr.length] = code
+
+      continue
+    }
+
+    codepoint_to_bytes(arr, code)
   }
 
-  return new Uint8Array(bytes)
+  return new Uint8Array(arr)
 }
 
+function codepoint_to_bytes(arr, code) {
+  // find MSB, use that to determine byte count
+  var copy_code = code
+    , bit_count = 0
+    , byte_count
+    , prefix
+    , _byte
+    , pos
+
+  do {
+    ++bit_count
+  } while(copy_code >>>= 1)
+
+  byte_count = Math.ceil((bit_count - 1) / 5) | 0
+  prefix = [0, 0, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc][byte_count]
+  pos = [0, 0, 3, 4, 5, 6, 7][byte_count]
+
+  _byte |= prefix
+
+  bit_count = (7 - pos) + 6 * (byte_count - 1)
+
+  while(bit_count) {
+    _byte |= +!!(code & (1 << bit_count)) << (7 - pos)
+    ++pos
+
+    if(pos % 8 === 0) {
+      arr[arr.length] = _byte
+      _byte = 0x80
+      pos = 2
+    }
+
+    --bit_count
+  }
+
+  if(pos) {
+    arr[arr.length] = _byte
+  }
+}
+
+function pad(str) {
+  while(str.length < 8) {
+    str = '0' + str
+  }
+  return str
+}
+
+function fixed_cca(str, idx) {
+  idx = idx || 0
+
+  var code = str.charCodeAt(idx)
+    , lo
+    , hi
+
+  if(0xD800 <= code && code <= 0xDBFF) {
+    lo = str.charCodeAt(idx + 1)
+    hi = code
+
+    if(isNaN(lo)) {
+      throw new Error('High surrogate not followed by low surrogate')
+    }
+
+    return ((hi - 0xD800) * 0x400) + (lo - 0xDC00) + 0x10000
+  }
+
+  if(0xDC00 <= code && code <= 0xDFFF) {
+    return false
+  }
+
+  return code
+}
+
+
+
 function from_base64(str) {
   return new Uint8Array(base64.toByteArray(str)) 
 }

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Improved metrics

Total package byte prevSize

38778

increased by4.11%

Number of package files

34

increased by3.03%

Lines of code

1137

increased by4.89%

Number of lines in readme file

94

increased by4.44%

No dependency changes