SVGNumberList.cpp (1952B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 /* This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #include "SVGNumberList.h" 8 9 #include "SVGContentUtils.h" 10 #include "nsCharSeparatedTokenizer.h" 11 #include "nsContentUtils.h" 12 #include "nsString.h" 13 #include "nsTextFormatter.h" 14 15 namespace mozilla { 16 17 nsresult SVGNumberList::CopyFrom(const SVGNumberList& rhs) { 18 if (!mNumbers.Assign(rhs.mNumbers, fallible)) { 19 return NS_ERROR_OUT_OF_MEMORY; 20 } 21 return NS_OK; 22 } 23 24 void SVGNumberList::GetValueAsString(nsAString& aValue) const { 25 aValue.Truncate(); 26 char16_t buf[24]; 27 uint32_t last = mNumbers.Length() - 1; 28 for (uint32_t i = 0; i < mNumbers.Length(); ++i) { 29 // Would like to use aValue.AppendPrintf("%f", mNumbers[i]), but it's not 30 // possible to always avoid trailing zeros. 31 nsTextFormatter::snprintf(buf, std::size(buf), u"%g", double(mNumbers[i])); 32 // We ignore OOM, since it's not useful for us to return an error. 33 aValue.Append(buf); 34 if (i != last) { 35 aValue.Append(' '); 36 } 37 } 38 } 39 40 nsresult SVGNumberList::SetValueFromString(const nsAString& aValue) { 41 SVGNumberList temp; 42 43 nsCharSeparatedTokenizerTemplate<nsContentUtils::IsHTMLWhitespace, 44 nsTokenizerFlags::SeparatorOptional> 45 tokenizer(aValue, ','); 46 47 while (tokenizer.hasMoreTokens()) { 48 float num; 49 if (!SVGContentUtils::ParseNumber(tokenizer.nextToken(), num)) { 50 return NS_ERROR_DOM_SYNTAX_ERR; 51 } 52 if (!temp.AppendItem(num)) { 53 return NS_ERROR_OUT_OF_MEMORY; 54 } 55 } 56 if (tokenizer.separatorAfterCurrentToken()) { 57 return NS_ERROR_DOM_SYNTAX_ERR; // trailing comma 58 } 59 mNumbers = std::move(temp.mNumbers); 60 return NS_OK; 61 } 62 63 } // namespace mozilla