library/textformat.js

   1 // Copyright (C) 2005 Rod Roark <rod@sunsetsystems.com>
   2 //
   3 // This program is free software; you can redistribute it and/or
   4 // modify it under the terms of the GNU General Public License
   5 // as published by the Free Software Foundation; either version 2
   6 // of the License, or (at your option) any later version.
   7
   8 // Onkeyup handler for dates.  Converts dates that are keyed in to a
   9 // consistent format, and helps to reduce typing errors.
  10 //
  11 function datekeyup(e, defcc) {
  12  while(true) {
  13   var delim = '';
  14   var arr = new Array(0, 0, 0);
  15   var ix = 0;
  16   var v = e.value;
  17
  18   // Build an array to facilitate error checking.
  19   for (var i = 0; i < v.length; ++i) {
  20    var c = v.charAt(i);
  21    if (c >= '0' && c <= '9') {
  22     ++arr[ix];
  23    } else if (c == '-' || c == '/') {
  24     arr[++ix] = 0;
  25    } else {
  26     e.value = v.substring(0, i);
  27     return;
  28    }
  29   }
  30
  31   // We have finished scanning the string.  If there is a problem,
  32   // drop the last character and repeat the loop.
  33   if ((ix > 2) ||
  34       (ix > 1 && arr[1] == 0) ||
  35       (ix > 0 && arr[0] == 0) ||
  36       (arr[0] > 8) ||
  37       (ix > 0 && arr[0] > 2 && (arr[0] != 4 || arr[1] > 2 || arr[2] > 2)) ||
  38       (arr[2] > 2 && (arr[2] > 4 || arr[0] > 2 || arr[1] > 2)))
  39   {
  40    e.value = v.substring(0, v.length - 1);
  41   } else {
  42    break;
  43   }
  44  }
  45
  46  if (arr[2] == 4 && defcc == '1') { // mm/dd/yyyy
  47   e.value  = v.substring(arr[0] + arr[1] + 2) + '-'; // year
  48   if (arr[0] == 1) e.value += '0';
  49   e.value += v.substring(0, arr[0]) + '-'; // month
  50   if (arr[1] == 1) e.value += '0';
  51   e.value += v.substring(arr[0] + 1, arr[0] + 1 + arr[1]); // day
  52  }
  53  else if (arr[2] == 4) { // dd-mm-yyyy
  54   e.value  = v.substring(arr[0] + arr[1] + 2) + '-'; // year
  55   if (arr[1] == 1) e.value += '0';
  56   e.value += v.substring(arr[0] + 1, arr[0] + 1 + arr[1]) + '-'; // month
  57   if (arr[0] == 1) e.value += '0';
  58   e.value += v.substring(0, arr[0]); // day
  59  }
  60  else if (arr[0] == 4 && arr[2] > 0) { // yyyy-mm-dd
  61   e.value  = v.substring(0, arr[0]) + '-'; // year
  62   if (arr[1] == 1) e.value += '0';
  63   e.value += v.substring(arr[0] + 1, arr[0] + 1 + arr[1]) + '-'; // month
  64   e.value += v.substring(arr[0] + arr[1] + 2); // day (may be 1 digit)
  65  }
  66  else if (arr[0] == 8 && defcc == '1') { // yyyymmdd
  67   e.value  = v.substring(0, 4) + '-'; // year
  68   e.value += v.substring(4, 6) + '-'; // month
  69   e.value += v.substring(6); // day
  70  }
  71  else if (arr[0] == 8) { // ddmmyyyy
  72   e.value  = v.substring(4) + '-'; // year
  73   e.value += v.substring(2, 4) + '-'; // month
  74   e.value += v.substring(0, 2); // day
  75  }
  76 }
  77
  78 // Onblur handler to avoid incomplete entry of dates.
  79 //
  80 function dateblur(e, defcc) {
  81  var v = e.value;
  82  if (v.length == 0) return;
  83
  84  var arr = new Array(0, 0, 0);
  85  var ix = 0;
  86  for (var i = 0; i < v.length; ++i) {
  87   var c = v.charAt(i);
  88   if (c >= '0' && c <= '9') {
  89    ++arr[ix];
  90   } else if (c == '-' || c == '/') {
  91    arr[++ix] = 0;
  92   } else {
  93    alert('Invalid character in date!');
  94    return;
  95   }
  96  }
  97
  98  if (ix != 2 || arr[0] != 4 || arr[1] != 2 || arr[2] < 1) {
  99   if (confirm('Date entry is incomplete! Try again?'))
 100    e.focus();
 101   else
 102    e.value = '';
 103   return;
 104  }
 105
 106  if (arr[2] == 1) {
 107   e.value = v.substring(0, 8) + '0' + v.substring(8);
 108  }
 109 }
 110
 111 // Private subroutine for US phone number formatting.
 112 function usphone(v) {
 113  if (v.length > 0 && v.charAt(0) == '-') v = v.substring(1);
 114  var oldlen = v.length;
 115  for (var i = 0; i < v.length; ++i) {
 116   var c = v.charAt(i);
 117   if (c < '0' || c > '9') {
 118    v = v.substring(0, i) + v.substring(i + 1);
 119    --i;
 120   }
 121  }
 122  if (oldlen > 3 && v.length >= 3) {
 123   v = v.substring(0, 3) + '-' + v.substring(3);
 124   if (oldlen > 7 && v.length >= 7) {
 125    v = v.substring(0, 7) + '-' + v.substring(7);
 126    if (v.length > 12) v = v.substring(0, 12);
 127   }
 128  }
 129  return v;
 130 }
 131
 132 // Private subroutine for non-US phone number formatting.
 133 function nonusphone(v) {
 134  for (var i = 0; i < v.length; ++i) {
 135   var c = v.charAt(i);
 136   if (c < '0' || c > '9') {
 137    v = v.substring(0, i) + v.substring(i + 1);
 138    --i;
 139   }
 140  }
 141  return v;
 142 }
 143
 144 // Telephone country codes that are exactly 2 digits.
 145 var twodigitccs = '/20/30/31/32/33/34/36/39/40/41/43/44/45/46/47/48/49/51/52/53/54/55/56/57/58/60/61/62/63/64/65/66/81/82/84/86/90/91/92/93/94/95/98/';
 146
 147 // Onkeyup handler for phone numbers.  Helps to ensure a consistent
 148 // format and to reduce typing errors.  defcc is the default telephone
 149 // country code as a string.
 150 //
 151 function phonekeyup(e, defcc) {
 152  var v = e.value;
 153  var oldlen = v.length;
 154
 155  // Deal with international formatting.
 156  if (v.length > 0 && v.charAt(0) == '+') {
 157   var cc = '';
 158   for (var i = 1; i < v.length; ++i) {
 159    var c = v.charAt(i);
 160    if (c < '0' || c > '9') {
 161     v = v.substring(0, i) + v.substring(i + i);
 162     --i;
 163     continue;
 164    }
 165    cc += c;
 166    if (i == 1 && oldlen > 2) {
 167     if (cc == '1') { // USA
 168      e.value = '+1-' + usphone(v.substring(2));
 169      return;
 170     }
 171     if (cc == '7') { // USSR
 172      e.value = '+7-' + nonusphone(v.substring(2));
 173      return;
 174     }
 175    }
 176    else if (i == 2 && oldlen > 3) {
 177     if (twodigitccs.indexOf(cc) >= 0) {
 178      e.value = v.substring(0, 3) + '-' + nonusphone(v.substring(3));
 179      return;
 180     }
 181    }
 182    else if (i == 3 && oldlen > 4) {
 183     e.value = v.substring(0, 4) + '-' + nonusphone(v.substring(4));
 184     return;
 185    }
 186   }
 187   e.value = v;
 188   return;
 189  }
 190
 191  if (defcc == '1') {
 192   e.value = usphone(v);
 193  } else {
 194   e.value = nonusphone(v);
 195  }
 196
 197  return;
 198 }