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1 /* |
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2 * XmlParser.h -- C++ wrapper around libexpat |
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3 * |
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4 * Copyright (c) 2013 David Demelier <markand@malikania.fr> |
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5 * |
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6 * Permission to use, copy, modify, and/or distribute this software for any |
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7 * purpose with or without fee is hereby granted, provided that the above |
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8 * copyright notice and this permission notice appear in all copies. |
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9 * |
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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17 */ |
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18 |
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19 #include <fstream> |
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20 |
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21 #include "XmlParser.h" |
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22 |
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23 namespace { |
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24 |
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25 void xmlStartElementHandler(XmlParser *p, const XML_Char *name, const XML_Char **attrs) |
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26 { |
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27 XmlParser::Attrs attributes; |
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28 |
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29 for (const XML_Char **p = attrs; *p != NULL; p += 2) |
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30 attributes[p[0]] = p[1]; |
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31 |
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32 p->startElementHandler(name, attributes); |
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33 } |
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34 |
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35 void xmlEndElementHandler(XmlParser *p, const XML_Char *name) |
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36 { |
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37 p->endElementHandler(name); |
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38 } |
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39 |
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40 void xmlCharacterDataHandler(XmlParser *p, const XML_Char *data, int length) |
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41 { |
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42 std::string str; |
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43 |
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44 str.reserve(length); |
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45 str.insert(0, data, length); |
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46 |
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47 p->characterDataHandler(str); |
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48 } |
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49 |
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50 } |
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51 |
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52 XmlParser::XmlParser(const std::string &path) |
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53 : m_path(path) |
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54 { |
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55 auto p = XML_ParserCreate(nullptr); |
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56 |
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57 XML_SetUserData(p, this); |
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58 XML_SetElementHandler(p, |
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59 reinterpret_cast<XML_StartElementHandler>(xmlStartElementHandler), |
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60 reinterpret_cast<XML_EndElementHandler>(xmlEndElementHandler)); |
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61 XML_SetCharacterDataHandler(p, |
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62 reinterpret_cast<XML_CharacterDataHandler>(xmlCharacterDataHandler)); |
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63 |
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64 m_handle = Ptr(new XML_Parser(p)); |
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65 } |
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66 |
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67 void XmlParser::open() |
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68 { |
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69 std::string line; |
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70 std::ifstream ifile(m_path); |
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71 int done = 0; |
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72 |
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73 if (ifile.is_open() && !done) { |
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74 while (std::getline(ifile, line)) { |
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75 done = ifile.eof(); |
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76 XML_Parse(*m_handle.get(), line.c_str(), line.length(), done); |
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77 } |
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78 } |
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79 } |
