1 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Mozilla SVG Project code.
16 : *
17 : * The Initial Developer of the Original Code is the Mozilla Foundation.
18 : * Portions created by the Initial Developer are Copyright (C) 2010
19 : * the Initial Developer. All Rights Reserved.
20 : *
21 : * Contributor(s):
22 : *
23 : * Alternatively, the contents of this file may be used under the terms of
24 : * either the GNU General Public License Version 2 or later (the "GPL"), or
25 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
26 : * in which case the provisions of the GPL or the LGPL are applicable instead
27 : * of those above. If you wish to allow use of your version of this file only
28 : * under the terms of either the GPL or the LGPL, and not to allow others to
29 : * use your version of this file under the terms of the MPL, indicate your
30 : * decision by deleting the provisions above and replace them with the notice
31 : * and other provisions required by the GPL or the LGPL. If you do not delete
32 : * the provisions above, a recipient may use your version of this file under
33 : * the terms of any one of the MPL, the GPL or the LGPL.
34 : *
35 : * ***** END LICENSE BLOCK ***** */
36 :
37 : #include "mozilla/Util.h"
38 :
39 : #include "SVGNumberList.h"
40 : #include "SVGAnimatedNumberList.h"
41 : #include "nsSVGElement.h"
42 : #include "nsDOMError.h"
43 : #include "nsString.h"
44 : #include "nsSVGUtils.h"
45 : #include "string.h"
46 : #include "prdtoa.h"
47 : #include "nsTextFormatter.h"
48 : #include "nsCharSeparatedTokenizer.h"
49 : #include "nsMathUtils.h"
50 :
51 : namespace mozilla {
52 :
53 : nsresult
54 0 : SVGNumberList::CopyFrom(const SVGNumberList& rhs)
55 : {
56 0 : if (!mNumbers.SetCapacity(rhs.Length())) {
57 : // Yes, we do want fallible alloc here
58 0 : return NS_ERROR_OUT_OF_MEMORY;
59 : }
60 0 : mNumbers = rhs.mNumbers;
61 0 : return NS_OK;
62 : }
63 :
64 : void
65 0 : SVGNumberList::GetValueAsString(nsAString& aValue) const
66 : {
67 0 : aValue.Truncate();
68 : PRUnichar buf[24];
69 0 : PRUint32 last = mNumbers.Length() - 1;
70 0 : for (PRUint32 i = 0; i < mNumbers.Length(); ++i) {
71 : // Would like to use aValue.AppendPrintf("%f", mNumbers[i]), but it's not
72 : // possible to always avoid trailing zeros.
73 : nsTextFormatter::snprintf(buf, ArrayLength(buf),
74 0 : NS_LITERAL_STRING("%g").get(),
75 0 : double(mNumbers[i]));
76 : // We ignore OOM, since it's not useful for us to return an error.
77 0 : aValue.Append(buf);
78 0 : if (i != last) {
79 0 : aValue.Append(' ');
80 : }
81 : }
82 0 : }
83 :
84 : nsresult
85 0 : SVGNumberList::SetValueFromString(const nsAString& aValue)
86 : {
87 0 : SVGNumberList temp;
88 :
89 : nsCharSeparatedTokenizerTemplate<IsSVGWhitespace>
90 0 : tokenizer(aValue, ',', nsCharSeparatedTokenizer::SEPARATOR_OPTIONAL);
91 :
92 0 : nsCAutoString str; // outside loop to minimize memory churn
93 :
94 0 : while (tokenizer.hasMoreTokens()) {
95 0 : CopyUTF16toUTF8(tokenizer.nextToken(), str); // NS_ConvertUTF16toUTF8
96 0 : const char *token = str.get();
97 0 : if (token == '\0') {
98 0 : return NS_ERROR_DOM_SYNTAX_ERR; // nothing between commas
99 : }
100 : char *end;
101 0 : float num = float(PR_strtod(token, &end));
102 0 : if (*end != '\0' || !NS_finite(num)) {
103 0 : return NS_ERROR_DOM_SYNTAX_ERR;
104 : }
105 0 : if (!temp.AppendItem(num)) {
106 0 : return NS_ERROR_OUT_OF_MEMORY;
107 : }
108 : }
109 0 : if (tokenizer.lastTokenEndedWithSeparator()) {
110 0 : return NS_ERROR_DOM_SYNTAX_ERR; // trailing comma
111 : }
112 0 : return CopyFrom(temp);
113 : }
114 :
115 : } // namespace mozilla
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