Delete proxy and total samples, which have bit-rotted.

samples/total/client/StringUtils.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-class StringUtils {
-
-  static final String _ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-  static final String _BASE64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
-
-  // FIXME: replace getters below with static const fields.
-  static int get COMMA() { return _c(","); }
-  static int get E_LOWER() { return _c("e"); }
-  static int get E_UPPER() { return _c("E"); }
-  static int get MINUS() { return _c("-"); }
-  static int get NEWLINE() { return _c("\n"); }
-  static int get NINE() { return _c("9"); }
-  static int get PERIOD() { return _c("."); }
-  static int get PLUS() { return _c("+"); }
-  static int get QUOTE() { return _c("\""); }
-  static int get SEMICOLON() { return _c(";"); }
-  static int get ZERO() { return _c("0"); }
-
-  static String base64Encode(String data) {
-    StringBuffer sb = new StringBuffer();
-    int length = data.length;
-    for (int i = 0; i < length; i += 3) {
-      int c0 = data.charCodeAt(i) & 0xff;
-      int c1 = i + 1 < length ? data.charCodeAt(i + 1) & 0xff : 0;
-      int c2 = i + 2 < length ? data.charCodeAt(i + 2) & 0xff : 0;
-
-      int x0 = c0 >> 2;
-      int x1 = ((c0 << 4) | (c1 >> 4)) & 0x3f;
-      int x2 = ((c1 << 2) | (c2 >> 6)) & 0x3f;
-      int x3 = c2 & 0x3f;
-
-      sb.add(_BASE64[x0]);
-      sb.add(_BASE64[x1]);
-      sb.add(_BASE64[x2]);
-      sb.add(_BASE64[x3]);
-    }
-    return sb.toString();
-  }
-
-  // Return 'A', ..., 'Z', 'AA, 'AB', ..., 'ZZ', 'AAA', ...
-  // 'A' = 0, 'Z' = 25, 'AA' = 26, etc.
-  static String columnString(int c) {
-    if (c <= 0) {
-      throw new RuntimeException("c <= 0");
-    }
-
-    List<int> x = new List<int>(4);
-    int i = 0;
-    while (c > 0) {
-      c -= 1;
-      x[i++] = c % 26;
-      c ~/= 26;
-    }
-    StringBuffer sb = new StringBuffer();
-    while (i-- > 0) {
-      sb.add(_ALPHABET[x[i]]);
-    }
-    return sb.toString();
-  }
-
-  // Return a negative integer if s1 is lexically before s2, a positive integer if
-  // s1 is lexically after s2, or 0 if s1 and s2 are equal.
-  static int compare(String s1, String s2) {
-    int pos1 = 0;
-    int pos2 = 0;
-    int length = Math.min(s1.length, s2.length);
-    while (pos1 < length) {
-      int result;
-      if ((result = s1.charCodeAt(pos1++) - s2.charCodeAt(pos2++)) != 0) {
-        return result;
-      }
-    }
-    return s1.length - s2.length;
-  }
-
-  static String escapeStringLiteral(String s) {
-    StringBuffer sb = new StringBuffer();
-    int last = 0;
-    for (int i = 0; i < s.length; i++) {
-      switch (s[i]) {
-      case "\\":
-        sb.add(s.substring(last, i));
-        sb.add("\\\\");
-        last = i + 1;
-        break;
-      case "\"":
-        sb.add(s.substring(last, i));
-        sb.add("\\\"");
-        last = i + 1;
-        break;
-      }
-    }
-    sb.add(s.substring(last, s.length));
-    return sb.toString();
-  }
-
-  static bool isDigit(int s) => s >= ZERO && s <= NINE;
-
-  // Returns true if the given string matches ^[+-]?[0-9]*\.?[0-9]*([eE][+-]?[0-9]+)?$
-  static bool isNumeric(String value) {
-    int len = value.length;
-    if (len == 0) {
-      return false;
-    }
-    bool gotDecimalPoint = false;
-    bool gotDigit = false;
-    int i = 0;
-    // Allow optional + or -
-    if (value.charCodeAt(i) == PLUS || value.charCodeAt(i) == MINUS) {
-      i++;
-    }
-    // Consume digits and "."'s
-    while (i < len && (isDigit(value.charCodeAt(i)) || value.charCodeAt(i) == PERIOD)) {
-      if (value.charCodeAt(i) == PERIOD) {
-        if (gotDecimalPoint) {
-          return false;
-        }
-        gotDecimalPoint = true;
-      } else {
-        gotDigit = true;
-      }
-      i++;
-    }
-    // There must be at least one digit
-    if (!gotDigit) {
-      return false;
-    }
-    if (i < len && (value.charCodeAt(i) == E_UPPER
-        || value.charCodeAt(i) == E_LOWER)) {
-      i++;
-      // Allow optional + or -
-      if (i < len && (value.charCodeAt(i) == PLUS || value.charCodeAt(i) == MINUS)) {
-        i++;
-      }
-      bool gotExponent = false;
-      while (i < len && isDigit(value.charCodeAt(i))) {
-        gotExponent = true;
-        i++;
-      }
-      // There must be at least one digit in the exponent
-      if (!gotExponent) {
-        return false;
-      }
-    }
-    // The entire input must be consumed
-    if (i < len) {
-      return false;
-    }
-    return true;
-  }
-
-  // Return 1, 2, 3, ...
-  static String rowString(int r) {
-    if (r <= 0) {
-      throw new RuntimeException("r <= 0");
-    }
-    return r.toString();
-  }
-
-  /**
-   * Split a delimited string of the form "Stuff","Stuff,With,Commas",UnquotedStuff
-   * Delimiters inside quotes are ignored.
-   */
-  static List<String> split(String s, int splitChar) {
-    List<String> out = new List<String>();
-    bool inQuote = false;
-    int start = 0;
-    for (int i = 0; i < s.length; i++) {
-      if (s.charCodeAt(i) == QUOTE) {
-        inQuote = !inQuote;
-      } else if ((s.charCodeAt(i) == splitChar) && !inQuote) {
-        out.add(s.substring(start, i));
-        start = i + 1;
-      }
-    }
-    out.add(s.substring(start, s.length));
-    return out;
-  }
-
-  /**
-   * Remove a pair of quotes from the ends of a string, if present.
-   */
-  static String stripQuotes(String s) {
-    int len = s.length;
-    if (len > 1 && s.charCodeAt(0) == QUOTE && s.charCodeAt(len - 1) == QUOTE) {
-      return s.substring(1, len - 1);
-    }
-    return s;
-  }
-
-  // Return "X", "X.Y", or "X.YZ", stripping trailing zeroes.
-  static String twoDecimals(double value) {
-    String v = value.toStringAsFixed(2);
-    if (v.endsWith(".00")) {
-      v = v.substring(0, v.length - 3);
-     } else if (v.endsWith("0")) {
-      v = v.substring(0, v.length - 1);
-    }
-    return v;
-  }
-
-  static String twoDigits(int x) {
-    String s = x.toString();
-    if (x < 10) {
-      return "0${s}";
-    } else if (x < 100) {
-      return s;
-    } else {
-      throw new RuntimeException("x >= 100");
-    }
-  }
-
-  static int _c(String s) => s.charCodeAt(0);
-}