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Added utilities.js in Objective-J with Base64 encoding/decoding, sprintf moved from CPString. Tests for base64 and sprintf utilities.

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This commit is contained in:
Tom Robinson
2008-12-11 05:23:47 -08:00
parent 2aacd3e807
commit 79ba2af699
6 changed files with 337 additions and 182 deletions
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Foundation/CPString.j
-182
View File
@@ -641,185 +641,3 @@ var CPStringHashes = new objj_dictionary();
String.prototype.isa = CPString;
// sprintf:
var sprintfFormatRegex = new RegExp("([^%]+|%[\\+\\-\\ \\#0]*[0-9\\*]*(.[0-9\\*]+)?[hlL]?[cbBdieEfgGosuxXpn%@])", "g");
var sprintfTagRegex = new RegExp("(%)([\\+\\-\\ \\#0]*)([0-9\\*]*)((.[0-9\\*]+)?)([hlL]?)([cbBdieEfgGosuxXpn%@])");
/*!
Creates a new string using C printf-style formatting. First argument should be a constant format string, like ' "float val = %f" ', remaining arguments should be the variables to print the values of, comma-separated.
@param format the format to be used, printf-style
@return the initialized CPString
*/
function sprintf(format)
{
var format = arguments[0],
tokens = format.match(sprintfFormatRegex),
index = 0,
result = "",
arg = 1;
for (var i = 0; i < tokens.length; i++)
{
var t = tokens[i];
if (format.substring(index, index + t.length) != t)
{
return result;
}
index += t.length;
if (t.charAt(0) != "%")
{
result += t;
}
else
{
var subtokens = t.match(sprintfTagRegex);
if (subtokens.length != 8 || subtokens[0] != t)
{
return result;
}
var percentSign = subtokens[1],
flags = subtokens[2],
widthString = subtokens[3],
precisionString = subtokens[4],
length = subtokens[6],
specifier = subtokens[7];
var width = null;
if (widthString == "*")
width = arguments[arg++];
else if (widthString != "")
width = Number(widthString);
var precision = null;
if (precisionString == ".*")
precision = arguments[arg++];
else if (precisionString != "")
precision = Number(precisionString.substring(1));
var leftJustify = (flags.indexOf("-") >= 0);
var padZeros = (flags.indexOf("0") >= 0);
var subresult = "";
if (RegExp("[bBdiufeExXo]").test(specifier))
{
var num = Number(arguments[arg++]);
var sign = "";
if (num < 0)
{
sign = "-";
}
else
{
if (flags.indexOf("+") >= 0)
sign = "+";
else if (flags.indexOf(" ") >= 0)
sign = " ";
}
if (specifier == "d" || specifier == "i" || specifier == "u")
{
var number = String(Math.abs(Math.floor(num)));
subresult = sprintf_justify(sign, "", number, "", width, leftJustify, padZeros)
}
if (specifier == "f")
{
var number = String((precision != null) ? Math.abs(num).toFixed(precision) : Math.abs(num));
var suffix = (flags.indexOf("#") >= 0 && number.indexOf(".") < 0) ? "." : "";
subresult = sprintf_justify(sign, "", number, suffix, width, leftJustify, padZeros);
}
if (specifier == "e" || specifier == "E")
{
var number = String(Math.abs(num).toExponential(precision != null ? precision : 21));
var suffix = (flags.indexOf("#") >= 0 && number.indexOf(".") < 0) ? "." : "";
subresult = sprintf_justify(sign, "", number, suffix, width, leftJustify, padZeros);
}
if (specifier == "x" || specifier == "X")
{
var number = String(Math.abs(num).toString(16));
var prefix = (flags.indexOf("#") >= 0 && num != 0) ? "0x" : "";
subresult = sprintf_justify(sign, prefix, number, "", width, leftJustify, padZeros);
}
if (specifier == "b" || specifier == "B")
{
var number = String(Math.abs(num).toString(2));
var prefix = (flags.indexOf("#") >= 0 && num != 0) ? "0b" : "";
subresult = sprintf_justify(sign, prefix, number, "", width, leftJustify, padZeros);
}
if (specifier == "o")
{
var number = String(Math.abs(num).toString(8));
var prefix = (flags.indexOf("#") >= 0 && num != 0) ? "0" : "";
subresult = sprintf_justify(sign, prefix, number, "", width, leftJustify, padZeros);
}
if (RegExp("[A-Z]").test(specifier))
subresult = subresult.toUpperCase();
else
subresult = subresult.toLowerCase();
}
else
{
var subresult = "";
if (specifier == "%")
subresult = "%";
else if (specifier == "c")
subresult = String(arguments[arg++]).charAt(0);
else if (specifier == "s" || specifier == "@")
subresult = String(arguments[arg++]);
else if (specifier == "p" || specifier == "n")
{
arg++;
subresult = "";
}
subresult = sprintf_justify("", "", subresult, "", width, leftJustify, false);
}
result += subresult;
}
}
return result;
}
var sprintf_justify = function(sign, prefix, string, suffix, width, leftJustify, padZeros)
{
var length = (sign.length + prefix.length + string.length + suffix.length);
if (leftJustify)
{
return sign + prefix + string + suffix + sprintf_pad(width - length, " ");
}
else
{
if (padZeros)
return sign + prefix + sprintf_pad(width - length, "0") + string + suffix;
else
return sprintf_pad(width - length, " ") + sign + prefix + string + suffix;
}
}
var sprintf_pad = function(n, ch)
{
var result = "";
for (var i = 0; i < n; i++)
result += ch;
return result;
}
Objective-J/build.xml
+1
View File
@@ -9,6 +9,7 @@
<filelist id = "Files.Objective-J" dir = ".">
<file name = "constants.js" />
<file name = "utilities.js" />
<file name = "runtime.js" />
<file name = "dictionary.js" />
<file name = "plist.js" />
Objective-J/utilities.js
+267
View File
@@ -0,0 +1,267 @@
// sprintf:
var _sprintfFormatRegex = new RegExp("([^%]+|%[\\+\\-\\ \\#0]*[0-9\\*]*(.[0-9\\*]+)?[hlL]?[cbBdieEfgGosuxXpn%@])", "g");
var _sprintfTagRegex = new RegExp("(%)([\\+\\-\\ \\#0]*)([0-9\\*]*)((.[0-9\\*]+)?)([hlL]?)([cbBdieEfgGosuxXpn%@])");
function sprintf(format)
{
var format = arguments[0],
tokens = format.match(_sprintfFormatRegex),
index = 0,
result = "",
arg = 1;
for (var i = 0; i < tokens.length; i++)
{
var t = tokens[i];
if (format.substring(index, index + t.length) != t)
{
return result;
}
index += t.length;
if (t.charAt(0) != "%")
{
result += t;
}
else
{
var subtokens = t.match(_sprintfTagRegex);
if (subtokens.length != 8 || subtokens[0] != t)
{
return result;
}
var percentSign = subtokens[1],
flags = subtokens[2],
widthString = subtokens[3],
precisionString = subtokens[4],
length = subtokens[6],
specifier = subtokens[7];
var width = null;
if (widthString == "*")
width = arguments[arg++];
else if (widthString != "")
width = Number(widthString);
var precision = null;
if (precisionString == ".*")
precision = arguments[arg++];
else if (precisionString != "")
precision = Number(precisionString.substring(1));
var leftJustify = (flags.indexOf("-") >= 0);
var padZeros = (flags.indexOf("0") >= 0);
var subresult = "";
if (RegExp("[bBdiufeExXo]").test(specifier))
{
var num = Number(arguments[arg++]);
var sign = "";
if (num < 0)
{
sign = "-";
}
else
{
if (flags.indexOf("+") >= 0)
sign = "+";
else if (flags.indexOf(" ") >= 0)
sign = " ";
}
if (specifier == "d" || specifier == "i" || specifier == "u")
{
var number = String(Math.abs(Math.floor(num)));
subresult = _sprintf_justify(sign, "", number, "", width, leftJustify, padZeros)
}
if (specifier == "f")
{
var number = String((precision != null) ? Math.abs(num).toFixed(precision) : Math.abs(num));
var suffix = (flags.indexOf("#") >= 0 && number.indexOf(".") < 0) ? "." : "";
subresult = _sprintf_justify(sign, "", number, suffix, width, leftJustify, padZeros);
}
if (specifier == "e" || specifier == "E")
{
var number = String(Math.abs(num).toExponential(precision != null ? precision : 21));
var suffix = (flags.indexOf("#") >= 0 && number.indexOf(".") < 0) ? "." : "";
subresult = _sprintf_justify(sign, "", number, suffix, width, leftJustify, padZeros);
}
if (specifier == "x" || specifier == "X")
{
var number = String(Math.abs(num).toString(16));
var prefix = (flags.indexOf("#") >= 0 && num != 0) ? "0x" : "";
subresult = _sprintf_justify(sign, prefix, number, "", width, leftJustify, padZeros);
}
if (specifier == "b" || specifier == "B")
{
var number = String(Math.abs(num).toString(2));
var prefix = (flags.indexOf("#") >= 0 && num != 0) ? "0b" : "";
subresult = _sprintf_justify(sign, prefix, number, "", width, leftJustify, padZeros);
}
if (specifier == "o")
{
var number = String(Math.abs(num).toString(8));
var prefix = (flags.indexOf("#") >= 0 && num != 0) ? "0" : "";
subresult = _sprintf_justify(sign, prefix, number, "", width, leftJustify, padZeros);
}
if (RegExp("[A-Z]").test(specifier))
subresult = subresult.toUpperCase();
else
subresult = subresult.toLowerCase();
}
else
{
var subresult = "";
if (specifier == "%")
subresult = "%";
else if (specifier == "c")
subresult = String(arguments[arg++]).charAt(0);
else if (specifier == "s" || specifier == "@")
subresult = String(arguments[arg++]);
else if (specifier == "p" || specifier == "n")
{
arg++;
subresult = "";
}
subresult = _sprintf_justify("", "", subresult, "", width, leftJustify, false);
}
result += subresult;
}
}
return result;
}
var _sprintf_justify = function(sign, prefix, string, suffix, width, leftJustify, padZeros)
{
var length = (sign.length + prefix.length + string.length + suffix.length);
if (leftJustify)
{
return sign + prefix + string + suffix + _sprintf_pad(width - length, " ");
}
else
{
if (padZeros)
return sign + prefix + _sprintf_pad(width - length, "0") + string + suffix;
else
return _sprintf_pad(width - length, " ") + sign + prefix + string + suffix;
}
}
var _sprintf_pad = function(n, ch)
{
var result = "";
for (var i = 0; i < n; i++)
result += ch;
return result;
}
// Base64 encoding and decoding
var base64_map_to = [
"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z",
"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z",
"0","1","2","3","4","5","6","7","8","9","+","/","="],
base64_map_from = [];
for (var i = 0; i < base64_map_to.length; i++)
base64_map_from[base64_map_to[i].charCodeAt(0)] = i;
function base64_decode_to_array(input, strip)
{
if (strip)
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
var pad = (input[input.length-1] == "=" ? 1 : 0) + (input[input.length-2] == "=" ? 1 : 0),
length = input.length,
output = [];
var i = 0;
while (i < length)
{
var bits = (base64_map_from[input.charCodeAt(i++)] << 18) |
(base64_map_from[input.charCodeAt(i++)] << 12) |
(base64_map_from[input.charCodeAt(i++)] << 6) |
(base64_map_from[input.charCodeAt(i++)]);
output.push((bits & 0xFF0000) >> 16);
output.push((bits & 0xFF00) >> 8);
output.push(bits & 0xFF);
}
// strip "=" padding from end
if (pad > 0)
return output.slice(0, -1 * pad);
return output;
}
function base64_encode_array(input)
{
var pad = (3 - (input.length % 3)) % 3,
length = input.length + pad,
output = [];
// pad with nulls
if (pad > 0) input.push(0);
if (pad > 1) input.push(0);
var i = 0;
while (i < length)
{
var bits = (input[i++] << 16) |
(input[i++] << 8) |
(input[i++]);
output.push(base64_map_to[(bits & 0xFC0000) >> 18]);
output.push(base64_map_to[(bits & 0x3F000) >> 12]);
output.push(base64_map_to[(bits & 0xFC0) >> 6]);
output.push(base64_map_to[bits & 0x3F]);
}
// pad with "=" and revert array to previous state
if (pad > 0)
{
output[output.length-1] = "=";
input.pop();
}
if (pad > 1)
{
output[output.length-2] = "=";
input.pop();
}
return output.join("");
}
function base64_decode_to_string(input, strip)
{
return String.fromCharCode.apply(null, base64_decode_to_array(input, strip));
}
function base64_encode_string(input)
{
var temp = [];
for (var i = 0; i < input.length; i++)
temp.push(input.charCodeAt(i));
return base64_encode_array(temp);
}
Tests/Objective-J/base64Test.j
+49
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@@ -0,0 +1,49 @@
var base64TestStrings = [
["leasure.", "bGVhc3VyZS4="],
["easure.", "ZWFzdXJlLg=="],
["asure.", "YXN1cmUu"],
["sure.", "c3VyZS4="]
];
@implementation base64Test : OJTestCase
- (void)test_base64_encode_string
{
for (var i = 0; i < base64TestStrings.length; i++)
[self assert:base64_encode_string(base64TestStrings[i][0]) equals:base64TestStrings[i][1]];
}
- (void)test_base64_encode_array
{
for (var i = 0; i < base64TestStrings.length; i++)
{
var input = [];
for (var j = 0; j < base64TestStrings[i][0].length; j++)
input.push(base64TestStrings[i][0].charCodeAt(j));
[self assert:base64_encode_array(input) equals:base64TestStrings[i][1]];
}
}
- (void)test_base64_decode_to_string
{
for (var i = 0; i < base64TestStrings.length; i++)
{
var result = base64_decode_to_string(base64TestStrings[i][1]),
expected = base64TestStrings[i][0];
[self assert:result equals:expected];
}
}
- (void)test_base64_decode_to_array
{
for (var i = 0; i < base64TestStrings.length; i++)
{
var result = base64_decode_to_array(base64TestStrings[i][1]),
expected = base64TestStrings[i][0];
for (var j = 0; j < expected.length || j < result.length; j++)
[self assert:result[j] equals:expected.charCodeAt(j)];
}
}
@end
Tests/Objective-J/sprintfTest.j
+19
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@@ -0,0 +1,19 @@
// TODO: add many many more of these...
var sprintfTestCases = [
[["[%@]", "hello world"], "[hello world]"],
[["[%d]", 123], "[123]"],
[["[%f]", 123.1234], "[123.1234]"],
[["[%d]", 123.1234], "[123]"]
];
@implementation sprintfTest : OJTestCase
- (void)test_sprintf
{
for (var i = 0; i < sprintfTestCases.length; i++)
{
[self assert:sprintf.apply(null, sprintfTestCases[i][0]) equals:sprintfTestCases[i][1]];
}
}
@end
build.xml
+1
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@@ -79,6 +79,7 @@
<target name = "test" depends = "build">
<ojtest>
<tests>
<fileset dir = "Tests/Objective-J" includes = "*.j"/>
<fileset dir = "Tests/Foundation" includes = "*.j"/>
<!--<fileset dir = "Tests/AppKit" includes = "*.j"/>-->
</tests>