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11 <h1>examples/PIPS/antiword/src/fontlist.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"> * fontlist.c</span> |
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13 <a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1998-2004 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 font 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 <stddef.h></span> |
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21 <a name="l00011"></a>00011 <span class="preprocessor">#include "antiword.h"</span> |
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22 <a name="l00012"></a>00012 |
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23 <a name="l00013"></a>00013 |
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24 <a name="l00014"></a>00014 <span class="comment">/*</span> |
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25 <a name="l00015"></a>00015 <span class="comment"> * Private structure to hide the way the information</span> |
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26 <a name="l00016"></a>00016 <span class="comment"> * is stored from the rest of the program</span> |
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27 <a name="l00017"></a>00017 <span class="comment"> */</span> |
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28 <a name="l00018"></a>00018 <span class="keyword">typedef</span> <span class="keyword">struct </span>font_desc_tag { |
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29 <a name="l00019"></a>00019 font_block_type tInfo; |
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30 <a name="l00020"></a>00020 <span class="keyword">struct </span>font_desc_tag *pNext; |
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31 <a name="l00021"></a>00021 } font_mem_type; |
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32 <a name="l00022"></a>00022 |
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33 <a name="l00023"></a>00023 <span class="comment">/* Variables needed to write the Font Information List */</span> |
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34 <a name="l00024"></a>00024 <span class="keyword">static</span> font_mem_type *pAnchor = NULL; |
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35 <a name="l00025"></a>00025 <span class="keyword">static</span> font_mem_type *pFontLast = NULL; |
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36 <a name="l00026"></a>00026 |
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37 <a name="l00027"></a>00027 |
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38 <a name="l00028"></a>00028 <span class="comment">/*</span> |
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39 <a name="l00029"></a>00029 <span class="comment"> * vDestroyFontInfoList - destroy the Font Information List</span> |
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40 <a name="l00030"></a>00030 <span class="comment"> */</span> |
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41 <a name="l00031"></a>00031 <span class="keywordtype">void</span> |
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42 <a name="l00032"></a>00032 vDestroyFontInfoList(<span class="keywordtype">void</span>) |
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43 <a name="l00033"></a>00033 { |
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44 <a name="l00034"></a>00034 font_mem_type *pCurr, *pNext; |
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45 <a name="l00035"></a>00035 |
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46 <a name="l00036"></a>00036 DBG_MSG(<span class="stringliteral">"vDestroyFontInfoList"</span>); |
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47 <a name="l00037"></a>00037 |
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48 <a name="l00038"></a>00038 <span class="comment">/* Free the Font Information List */</span> |
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49 <a name="l00039"></a>00039 pCurr = pAnchor; |
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50 <a name="l00040"></a>00040 <span class="keywordflow">while</span> (pCurr != NULL) { |
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51 <a name="l00041"></a>00041 pNext = pCurr->pNext; |
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52 <a name="l00042"></a>00042 pCurr = xfree(pCurr); |
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53 <a name="l00043"></a>00043 pCurr = pNext; |
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54 <a name="l00044"></a>00044 } |
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55 <a name="l00045"></a>00045 pAnchor = NULL; |
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56 <a name="l00046"></a>00046 <span class="comment">/* Reset all control variables */</span> |
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57 <a name="l00047"></a>00047 pFontLast = NULL; |
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58 <a name="l00048"></a>00048 } <span class="comment">/* end of vDestroyFontInfoList */</span> |
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59 <a name="l00049"></a>00049 |
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60 <a name="l00050"></a>00050 <span class="comment">/*</span> |
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61 <a name="l00051"></a>00051 <span class="comment"> * vCorrectFontValues - correct font values to values Antiword can use</span> |
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62 <a name="l00052"></a>00052 <span class="comment"> */</span> |
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63 <a name="l00053"></a>00053 <span class="keywordtype">void</span> |
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64 <a name="l00054"></a>00054 vCorrectFontValues(font_block_type *pFontBlock) |
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65 <a name="l00055"></a>00055 { |
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66 <a name="l00056"></a>00056 UINT uiRealSize; |
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67 <a name="l00057"></a>00057 USHORT usRealStyle; |
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68 <a name="l00058"></a>00058 |
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69 <a name="l00059"></a>00059 uiRealSize = pFontBlock->usFontSize; |
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70 <a name="l00060"></a>00060 usRealStyle = pFontBlock->usFontStyle; |
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71 <a name="l00061"></a>00061 <span class="keywordflow">if</span> (bIsSmallCapitals(pFontBlock->usFontStyle)) { |
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72 <a name="l00062"></a>00062 <span class="comment">/* Small capitals become normal capitals in a smaller font */</span> |
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73 <a name="l00063"></a>00063 uiRealSize = (uiRealSize * 4 + 2) / 5; |
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74 <a name="l00064"></a>00064 usRealStyle &= ~FONT_SMALL_CAPITALS; |
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75 <a name="l00065"></a>00065 usRealStyle |= FONT_CAPITALS; |
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76 <a name="l00066"></a>00066 } |
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77 <a name="l00067"></a>00067 <span class="keywordflow">if</span> (bIsSuperscript(pFontBlock->usFontStyle) || |
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78 <a name="l00068"></a>00068 bIsSubscript(pFontBlock->usFontStyle)) { |
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79 <a name="l00069"></a>00069 <span class="comment">/* Superscript and subscript use a smaller fontsize */</span> |
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80 <a name="l00070"></a>00070 uiRealSize = (uiRealSize * 2 + 1) / 3; |
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81 <a name="l00071"></a>00071 } |
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82 <a name="l00072"></a>00072 |
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83 <a name="l00073"></a>00073 <span class="keywordflow">if</span> (uiRealSize < MIN_FONT_SIZE) { |
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84 <a name="l00074"></a>00074 DBG_DEC(uiRealSize); |
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85 <a name="l00075"></a>00075 uiRealSize = MIN_FONT_SIZE; |
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86 <a name="l00076"></a>00076 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (uiRealSize > MAX_FONT_SIZE) { |
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87 <a name="l00077"></a>00077 DBG_DEC(uiRealSize); |
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88 <a name="l00078"></a>00078 uiRealSize = MAX_FONT_SIZE; |
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89 <a name="l00079"></a>00079 } |
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90 <a name="l00080"></a>00080 |
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91 <a name="l00081"></a>00081 pFontBlock->usFontSize = (USHORT)uiRealSize; |
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92 <a name="l00082"></a>00082 <span class="keywordflow">if</span> (pFontBlock->ucFontColor == 8) { |
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93 <a name="l00083"></a>00083 <span class="comment">/* White text to light gray text */</span> |
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94 <a name="l00084"></a>00084 pFontBlock->ucFontColor = 16; |
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95 <a name="l00085"></a>00085 } |
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96 <a name="l00086"></a>00086 pFontBlock->usFontStyle = usRealStyle; |
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97 <a name="l00087"></a>00087 } <span class="comment">/* end of vCorrectFontValues */</span> |
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98 <a name="l00088"></a>00088 |
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99 <a name="l00089"></a>00089 <span class="comment">/*</span> |
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100 <a name="l00090"></a>00090 <span class="comment"> * vAdd2FontInfoList - Add an element to the Font Information List</span> |
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101 <a name="l00091"></a>00091 <span class="comment"> */</span> |
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102 <a name="l00092"></a>00092 <span class="keywordtype">void</span> |
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103 <a name="l00093"></a>00093 vAdd2FontInfoList(<span class="keyword">const</span> font_block_type *pFontBlock) |
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104 <a name="l00094"></a>00094 { |
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105 <a name="l00095"></a>00095 font_mem_type *pListMember; |
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106 <a name="l00096"></a>00096 |
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107 <a name="l00097"></a>00097 fail(pFontBlock == NULL); |
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108 <a name="l00098"></a>00098 |
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109 <a name="l00099"></a>00099 NO_DBG_MSG(<span class="stringliteral">"bAdd2FontInfoList"</span>); |
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110 <a name="l00100"></a>00100 |
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111 <a name="l00101"></a>00101 <span class="keywordflow">if</span> (pFontBlock->ulFileOffset == FC_INVALID) { |
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112 <a name="l00102"></a>00102 <span class="comment">/*</span> |
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113 <a name="l00103"></a>00103 <span class="comment"> * This offset is really past the end of the file,</span> |
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114 <a name="l00104"></a>00104 <span class="comment"> * so don't waste any memory by storing it.</span> |
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115 <a name="l00105"></a>00105 <span class="comment"> */</span> |
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116 <a name="l00106"></a>00106 <span class="keywordflow">return</span>; |
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117 <a name="l00107"></a>00107 } |
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118 <a name="l00108"></a>00108 |
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119 <a name="l00109"></a>00109 NO_DBG_HEX(pFontBlock->ulFileOffset); |
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120 <a name="l00110"></a>00110 NO_DBG_DEC_C(pFontBlock->ucFontNumber != 0, |
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121 <a name="l00111"></a>00111 pFontBlock->ucFontNumber); |
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122 <a name="l00112"></a>00112 NO_DBG_DEC_C(pFontBlock->usFontSize != DEFAULT_FONT_SIZE, |
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123 <a name="l00113"></a>00113 pFontBlock->usFontSize); |
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124 <a name="l00114"></a>00114 NO_DBG_DEC_C(pFontBlock->ucFontColor != 0, |
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125 <a name="l00115"></a>00115 pFontBlock->ucFontColor); |
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126 <a name="l00116"></a>00116 NO_DBG_HEX_C(pFontBlock->usFontStyle != 0x00, |
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127 <a name="l00117"></a>00117 pFontBlock->usFontStyle); |
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128 <a name="l00118"></a>00118 |
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129 <a name="l00119"></a>00119 <span class="keywordflow">if</span> (pFontLast != NULL && |
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130 <a name="l00120"></a>00120 pFontLast->tInfo.ulFileOffset == pFontBlock->ulFileOffset) { |
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131 <a name="l00121"></a>00121 <span class="comment">/*</span> |
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132 <a name="l00122"></a>00122 <span class="comment"> * If two consecutive fonts share the same</span> |
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133 <a name="l00123"></a>00123 <span class="comment"> * offset, remember only the last font</span> |
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134 <a name="l00124"></a>00124 <span class="comment"> */</span> |
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135 <a name="l00125"></a>00125 fail(pFontLast->pNext != NULL); |
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136 <a name="l00126"></a>00126 pFontLast->tInfo = *pFontBlock; |
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137 <a name="l00127"></a>00127 <span class="keywordflow">return</span>; |
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138 <a name="l00128"></a>00128 } |
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139 <a name="l00129"></a>00129 |
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140 <a name="l00130"></a>00130 <span class="comment">/* Create list member */</span> |
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141 <a name="l00131"></a>00131 pListMember = xmalloc(<span class="keyword">sizeof</span>(font_mem_type)); |
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142 <a name="l00132"></a>00132 <span class="comment">/* Fill the list member */</span> |
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143 <a name="l00133"></a>00133 pListMember->tInfo = *pFontBlock; |
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144 <a name="l00134"></a>00134 pListMember->pNext = NULL; |
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145 <a name="l00135"></a>00135 <span class="comment">/* Correct the values where needed */</span> |
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146 <a name="l00136"></a>00136 vCorrectFontValues(&pListMember->tInfo); |
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147 <a name="l00137"></a>00137 <span class="comment">/* Add the new member to the list */</span> |
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148 <a name="l00138"></a>00138 <span class="keywordflow">if</span> (pAnchor == NULL) { |
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149 <a name="l00139"></a>00139 pAnchor = pListMember; |
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150 <a name="l00140"></a>00140 } <span class="keywordflow">else</span> { |
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151 <a name="l00141"></a>00141 fail(pFontLast == NULL); |
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152 <a name="l00142"></a>00142 pFontLast->pNext = pListMember; |
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153 <a name="l00143"></a>00143 } |
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154 <a name="l00144"></a>00144 pFontLast = pListMember; |
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155 <a name="l00145"></a>00145 } <span class="comment">/* end of vAdd2FontInfoList */</span> |
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156 <a name="l00146"></a>00146 |
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157 <a name="l00147"></a>00147 <span class="comment">/*</span> |
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158 <a name="l00148"></a>00148 <span class="comment"> * Get the record that follows the given recored in the Font Information List</span> |
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159 <a name="l00149"></a>00149 <span class="comment"> */</span> |
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160 <a name="l00150"></a>00150 <span class="keyword">const</span> font_block_type * |
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161 <a name="l00151"></a>00151 pGetNextFontInfoListItem(<span class="keyword">const</span> font_block_type *pCurr) |
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162 <a name="l00152"></a>00152 { |
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163 <a name="l00153"></a>00153 <span class="keyword">const</span> font_mem_type *pRecord; |
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164 <a name="l00154"></a>00154 <span class="keywordtype">size_t</span> tOffset; |
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165 <a name="l00155"></a>00155 |
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166 <a name="l00156"></a>00156 <span class="keywordflow">if</span> (pCurr == NULL) { |
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167 <a name="l00157"></a>00157 <span class="keywordflow">if</span> (pAnchor == NULL) { |
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168 <a name="l00158"></a>00158 <span class="comment">/* There are no records */</span> |
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169 <a name="l00159"></a>00159 <span class="keywordflow">return</span> NULL; |
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170 <a name="l00160"></a>00160 } |
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171 <a name="l00161"></a>00161 <span class="comment">/* The first record is the only one without a predecessor */</span> |
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172 <a name="l00162"></a>00162 <span class="keywordflow">return</span> &pAnchor->tInfo; |
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173 <a name="l00163"></a>00163 } |
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174 <a name="l00164"></a>00164 tOffset = offsetof(font_mem_type, tInfo); |
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175 <a name="l00165"></a>00165 <span class="comment">/* Many casts to prevent alignment warnings */</span> |
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176 <a name="l00166"></a>00166 pRecord = (font_mem_type *)(<span class="keywordtype">void</span> *)((<span class="keywordtype">char</span> *)pCurr - tOffset); |
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177 <a name="l00167"></a>00167 fail(pCurr != &pRecord->tInfo); |
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178 <a name="l00168"></a>00168 <span class="keywordflow">if</span> (pRecord->pNext == NULL) { |
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179 <a name="l00169"></a>00169 <span class="comment">/* The last record has no successor */</span> |
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180 <a name="l00170"></a>00170 <span class="keywordflow">return</span> NULL; |
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181 <a name="l00171"></a>00171 } |
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182 <a name="l00172"></a>00172 <span class="keywordflow">return</span> &pRecord->pNext->tInfo; |
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183 <a name="l00173"></a>00173 } <span class="comment">/* end of pGetNextFontInfoListItem */</span> |
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184 </pre></div></div> |
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