68 lines
2.9 KiB
Objective-C
68 lines
2.9 KiB
Objective-C
//
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// MIT License (MIT)
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//
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// Copyright (c) 2018 Oleg Geier
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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// of the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#import "RSXMLError.h"
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const NSErrorDomain kLIBXMLParserErrorDomain = @"LIBXMLParserErrorDomain";
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const NSErrorDomain kRSXMLParserErrorDomain = @"RSXMLParserErrorDomain";
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const char * parserDescriptionForError(RSXMLError code);
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const char * parserDescriptionForError(RSXMLError code) {
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switch (code) {
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case RSXMLErrorExpectingHTML: return "HTML data";
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case RSXMLErrorExpectingOPML: return "OPML data";
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case RSXMLErrorExpectingFeed: return "RSS or Atom feed";
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default: return "Unknown format";
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}
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}
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NSString * getErrorMessageForRSXMLError(RSXMLError code, RSXMLError expected);
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NSString * getErrorMessageForRSXMLError(RSXMLError code, RSXMLError expected) {
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switch (code) { // switch statement will warn if an enum value is missing
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case RSXMLErrorNoData:
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return @"Can't parse data. Empty data.";
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case RSXMLErrorInputEncoding:
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return @"Can't parse data. Input encoding cannot be converted to UTF-8 / UTF-16.";
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case RSXMLErrorMissingLeftCaret:
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return @"Can't parse XML. Missing left caret character ('<').";
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case RSXMLErrorContainsXMLErrorsTag:
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return @"Can't parse XML. XML contains 'errors' tag.";
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case RSXMLErrorNoSuitableParser:
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return @"Can't parse XML. No suitable parser found. Document not well-formed?";
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case RSXMLErrorExpectingHTML:
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case RSXMLErrorExpectingOPML:
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case RSXMLErrorExpectingFeed:
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return [NSString stringWithFormat:@"Can't parse XML. %s expected, but %s found.",
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parserDescriptionForError(code), parserDescriptionForError(expected)];
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}
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}
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NSError * RSXMLMakeError(RSXMLError code) {
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return RSXMLMakeErrorWrongParser(code, RSXMLErrorNoData);
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}
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NSError * RSXMLMakeErrorWrongParser(RSXMLError code, RSXMLError expected) {
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return [NSError errorWithDomain:kRSXMLParserErrorDomain code:code
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userInfo:@{NSLocalizedDescriptionKey: getErrorMessageForRSXMLError(code, expected)}];
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}
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