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5 <title>TB9.2 Example Applications: examples/PIPS/antiword/src/pictlist.c Source File</title> |
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11 <h1>examples/PIPS/antiword/src/pictlist.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span> |
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12 <a name="l00002"></a>00002 <span class="comment"> * pictlist.c</span> |
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13 <a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 2000-2004 A.J. van Os; Released under GNU GPL</span> |
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14 <a name="l00004"></a>00004 <span class="comment"> *</span> |
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15 <a name="l00005"></a>00005 <span class="comment"> * Description:</span> |
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16 <a name="l00006"></a>00006 <span class="comment"> * Build, read and destroy a list of Word picture information</span> |
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17 <a name="l00007"></a>00007 <span class="comment"> */</span> |
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18 <a name="l00008"></a>00008 |
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19 <a name="l00009"></a>00009 <span class="preprocessor">#include <stdlib.h></span> |
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20 <a name="l00010"></a>00010 <span class="preprocessor">#include "antiword.h"</span> |
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21 <a name="l00011"></a>00011 |
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22 <a name="l00012"></a>00012 |
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23 <a name="l00013"></a>00013 <span class="comment">/*</span> |
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24 <a name="l00014"></a>00014 <span class="comment"> * Private structure to hide the way the information</span> |
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25 <a name="l00015"></a>00015 <span class="comment"> * is stored from the rest of the program</span> |
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26 <a name="l00016"></a>00016 <span class="comment"> */</span> |
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27 <a name="l00017"></a>00017 <span class="keyword">typedef</span> <span class="keyword">struct </span>picture_mem_tag { |
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28 <a name="l00018"></a>00018 picture_block_type tInfo; |
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29 <a name="l00019"></a>00019 <span class="keyword">struct </span>picture_mem_tag *pNext; |
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30 <a name="l00020"></a>00020 } picture_mem_type; |
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31 <a name="l00021"></a>00021 |
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32 <a name="l00022"></a>00022 <span class="comment">/* Variables needed to write the Picture Information List */</span> |
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33 <a name="l00023"></a>00023 <span class="keyword">static</span> picture_mem_type *pAnchor = NULL; |
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34 <a name="l00024"></a>00024 <span class="keyword">static</span> picture_mem_type *pPictureLast = NULL; |
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35 <a name="l00025"></a>00025 |
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36 <a name="l00026"></a>00026 |
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37 <a name="l00027"></a>00027 <span class="comment">/*</span> |
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38 <a name="l00028"></a>00028 <span class="comment"> * vDestroyPictInfoList - destroy the Picture Information List</span> |
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39 <a name="l00029"></a>00029 <span class="comment"> */</span> |
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40 <a name="l00030"></a>00030 <span class="keywordtype">void</span> |
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41 <a name="l00031"></a>00031 vDestroyPictInfoList(<span class="keywordtype">void</span>) |
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42 <a name="l00032"></a>00032 { |
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43 <a name="l00033"></a>00033 picture_mem_type *pCurr, *pNext; |
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44 <a name="l00034"></a>00034 |
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45 <a name="l00035"></a>00035 DBG_MSG(<span class="stringliteral">"vDestroyPictInfoList"</span>); |
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46 <a name="l00036"></a>00036 |
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47 <a name="l00037"></a>00037 <span class="comment">/* Free the Picture Information List */</span> |
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48 <a name="l00038"></a>00038 pCurr = pAnchor; |
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49 <a name="l00039"></a>00039 <span class="keywordflow">while</span> (pCurr != NULL) { |
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50 <a name="l00040"></a>00040 pNext = pCurr->pNext; |
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51 <a name="l00041"></a>00041 pCurr = xfree(pCurr); |
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52 <a name="l00042"></a>00042 pCurr = pNext; |
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53 <a name="l00043"></a>00043 } |
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54 <a name="l00044"></a>00044 pAnchor = NULL; |
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55 <a name="l00045"></a>00045 <span class="comment">/* Reset all control variables */</span> |
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56 <a name="l00046"></a>00046 pPictureLast = NULL; |
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57 <a name="l00047"></a>00047 } <span class="comment">/* end of vDestroyPictInfoList */</span> |
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58 <a name="l00048"></a>00048 |
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59 <a name="l00049"></a>00049 <span class="comment">/*</span> |
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60 <a name="l00050"></a>00050 <span class="comment"> * vAdd2PictInfoList - Add an element to the Picture Information List</span> |
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61 <a name="l00051"></a>00051 <span class="comment"> */</span> |
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62 <a name="l00052"></a>00052 <span class="keywordtype">void</span> |
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63 <a name="l00053"></a>00053 vAdd2PictInfoList(<span class="keyword">const</span> picture_block_type *pPictureBlock) |
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64 <a name="l00054"></a>00054 { |
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65 <a name="l00055"></a>00055 picture_mem_type *pListMember; |
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66 <a name="l00056"></a>00056 |
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67 <a name="l00057"></a>00057 fail(pPictureBlock == NULL); |
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68 <a name="l00058"></a>00058 |
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69 <a name="l00059"></a>00059 NO_DBG_MSG(<span class="stringliteral">"bAdd2PictInfoList"</span>); |
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70 <a name="l00060"></a>00060 |
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71 <a name="l00061"></a>00061 <span class="keywordflow">if</span> (pPictureBlock->ulFileOffset == FC_INVALID) { |
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72 <a name="l00062"></a>00062 <span class="comment">/*</span> |
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73 <a name="l00063"></a>00063 <span class="comment"> * This offset is really past the end of the file,</span> |
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74 <a name="l00064"></a>00064 <span class="comment"> * so don't waste any memory by storing it.</span> |
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75 <a name="l00065"></a>00065 <span class="comment"> */</span> |
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76 <a name="l00066"></a>00066 <span class="keywordflow">return</span>; |
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77 <a name="l00067"></a>00067 } |
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78 <a name="l00068"></a>00068 <span class="keywordflow">if</span> (pPictureBlock->ulFileOffsetPicture == FC_INVALID) { |
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79 <a name="l00069"></a>00069 <span class="comment">/*</span> |
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80 <a name="l00070"></a>00070 <span class="comment"> * The place where this picture is supposed to be stored</span> |
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81 <a name="l00071"></a>00071 <span class="comment"> * doesn't exist.</span> |
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82 <a name="l00072"></a>00072 <span class="comment"> */</span> |
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83 <a name="l00073"></a>00073 <span class="keywordflow">return</span>; |
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84 <a name="l00074"></a>00074 } |
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85 <a name="l00075"></a>00075 |
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86 <a name="l00076"></a>00076 NO_DBG_HEX(pPictureBlock->ulFileOffset); |
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87 <a name="l00077"></a>00077 NO_DBG_HEX(pPictureBlock->ulFileOffsetPicture); |
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88 <a name="l00078"></a>00078 NO_DBG_HEX(pPictureBlock->ulPictureOffset); |
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89 <a name="l00079"></a>00079 |
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90 <a name="l00080"></a>00080 <span class="comment">/* Create list member */</span> |
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91 <a name="l00081"></a>00081 pListMember = xmalloc(<span class="keyword">sizeof</span>(picture_mem_type)); |
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92 <a name="l00082"></a>00082 <span class="comment">/* Fill the list member */</span> |
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93 <a name="l00083"></a>00083 pListMember->tInfo = *pPictureBlock; |
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94 <a name="l00084"></a>00084 pListMember->pNext = NULL; |
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95 <a name="l00085"></a>00085 <span class="comment">/* Add the new member to the list */</span> |
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96 <a name="l00086"></a>00086 <span class="keywordflow">if</span> (pAnchor == NULL) { |
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97 <a name="l00087"></a>00087 pAnchor = pListMember; |
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98 <a name="l00088"></a>00088 } <span class="keywordflow">else</span> { |
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99 <a name="l00089"></a>00089 fail(pPictureLast == NULL); |
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100 <a name="l00090"></a>00090 pPictureLast->pNext = pListMember; |
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101 <a name="l00091"></a>00091 } |
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102 <a name="l00092"></a>00092 pPictureLast = pListMember; |
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103 <a name="l00093"></a>00093 } <span class="comment">/* end of vAdd2PictInfoList */</span> |
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104 <a name="l00094"></a>00094 |
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105 <a name="l00095"></a>00095 <span class="comment">/*</span> |
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106 <a name="l00096"></a>00096 <span class="comment"> * Get the info with the given file offset from the Picture Information List</span> |
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107 <a name="l00097"></a>00097 <span class="comment"> */</span> |
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108 <a name="l00098"></a>00098 ULONG |
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109 <a name="l00099"></a>00099 ulGetPictInfoListItem(ULONG ulFileOffset) |
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110 <a name="l00100"></a>00100 { |
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111 <a name="l00101"></a>00101 picture_mem_type *pCurr; |
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112 <a name="l00102"></a>00102 |
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113 <a name="l00103"></a>00103 <span class="keywordflow">for</span> (pCurr = pAnchor; pCurr != NULL; pCurr = pCurr->pNext) { |
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114 <a name="l00104"></a>00104 <span class="keywordflow">if</span> (pCurr->tInfo.ulFileOffset == ulFileOffset) { |
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115 <a name="l00105"></a>00105 <span class="keywordflow">return</span> pCurr->tInfo.ulFileOffsetPicture; |
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116 <a name="l00106"></a>00106 } |
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117 <a name="l00107"></a>00107 } |
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118 <a name="l00108"></a>00108 <span class="keywordflow">return</span> FC_INVALID; |
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119 <a name="l00109"></a>00109 } <span class="comment">/* end of ulGetPictInfoListItem */</span> |
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120 </pre></div></div> |
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