Add a regenerate button to regenerate the password in Windows.

rlz/lib/string_utils.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-// String manipulation functions used in the RLZ library.
-
-#include "rlz/lib/string_utils.h"
-
-#include "rlz/lib/assert.h"
-
-namespace rlz_lib {
-
-bool IsAscii(char letter) {
-  return (letter >= 0x0 && letter < 0x80);
-}
-
-bool GetHexValue(char letter, int* value) {
-  if (!value) {
-    ASSERT_STRING("GetHexValue: Invalid output paramter");
-    return false;
-  }
-  *value = 0;
-
-  if (letter >= '0' && letter <= '9')
-    *value = letter - '0';
-  else if (letter >= 'a' && letter <= 'f')
-    *value = (letter - 'a') + 0xA;
-  else if (letter >= 'A' && letter <= 'F')
-    *value = (letter - 'A') + 0xA;
-  else
-    return false;
-
-  return true;
-}
-
-int HexStringToInteger(const char* text) {
-  if (!text) {
-    ASSERT_STRING("HexStringToInteger: text is NULL.");
-    return 0;
-  }
-
-  int idx = 0;
-  // Ignore leading whitespace.
-  while (text[idx] == '\t' || text[idx] == ' ')
-    idx++;
-
-  if ((text[idx] == '0') &&
-      (text[idx + 1] == 'X' || text[idx + 1] == 'x'))
-    idx +=2;  // String is of the form 0x...
-
-  int number = 0;
-  int digit = 0;
-  for (; text[idx] != '\0'; idx++) {
-    if (!GetHexValue(text[idx], &digit)) {
-      // Ignore trailing whitespaces, but assert on other trailing characters.
-      bool only_whitespaces = true;
-      while (only_whitespaces && text[idx])
-        only_whitespaces = (text[idx++] == ' ');
-      if (!only_whitespaces)
-        ASSERT_STRING("HexStringToInteger: text contains non-hex characters.");
-      return number;
-    }
-    number = (number << 4) | digit;
-  }
-
-  return number;
-}
-
-bool BytesToString(const unsigned char* data,
-                   int data_len,
-                   std::string* string) {
-  if (!string)
-    return false;
-
-  string->clear();
-  if (data_len < 1 || !data)
-    return false;
-
-  static const char kHex[] = "0123456789ABCDEF";
-
-  // Fix the buffer size to begin with to avoid repeated re-allocation.
-  string->resize(data_len * 2);
-  int index = data_len;
-  while (index--) {
-    string->at(2 * index) = kHex[data[index] >> 4];  // high digit
-    string->at(2 * index + 1) = kHex[data[index] & 0x0F];  // low digit
-  }
-
-  return true;
-}
-
-}  // namespace rlz_lib