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<div class="title">jas_stream.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 1999-2000 Image Power, Inc. and the University of</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * British Columbia.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (c) 2001-2003 Michael David Adams.</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * All rights reserved.</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> */</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">/* __START_OF_JASPER_LICENSE__</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * </span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * JasPer License Version 2.0</span></div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * </span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * Copyright (c) 2001-2006 Michael David Adams</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * Copyright (c) 1999-2000 Image Power, Inc.</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * Copyright (c) 1999-2000 The University of British Columbia</span></div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * </span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * All rights reserved.</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * </span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Permission is hereby granted, free of charge, to any person (the</span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * "User") obtaining a copy of this software and associated documentation</span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * files (the "Software"), to deal in the Software without restriction,</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * including without limitation the rights to use, copy, modify, merge,</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * publish, distribute, and/or sell copies of the Software, and to permit</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * persons to whom the Software is furnished to do so, subject to the</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * following conditions:</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * </span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * 1. The above copyright notices and this permission notice (which</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * includes the disclaimer below) shall be included in all copies or</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * substantial portions of the Software.</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * </span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * 2. The name of a copyright holder shall not be used to endorse or</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * promote products derived from the Software without specific prior</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * written permission.</span></div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * </span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS</span></div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING</span></div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A</span></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO</span></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL</span></div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING</span></div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,</span></div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION</span></div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE</span></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE</span></div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS</span></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL</span></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS</span></div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE</span></div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE</span></div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL</span></div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,</span></div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL</span></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH</span></div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,</span></div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH</span></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY</span></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.</span></div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> * </span></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> * __END_OF_JASPER_LICENSE__</span></div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> */</span></div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">/*</span></div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * I/O Stream Class</span></div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> *</span></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> * $Id$</span></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> */</span></div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="preprocessor">#ifndef JAS_STREAM_H</span></div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="preprocessor">#define JAS_STREAM_H</span></div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment">* Includes.</span></div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment">/* The configuration header file should be included first. */</span></div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor">#include <jasper/jas_config.h></span> <span class="comment">/* IWYU pragma: export */</span></div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="preprocessor">#include <stdio.h></span></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="preprocessor">#if defined(JAS_HAVE_FCNTL_H)</span></div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="preprocessor">#include <fcntl.h></span></div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="preprocessor">#include <jasper/jas_types.h></span></div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment">* Constants.</span></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">/* On most UNIX systems, we probably need to define O_BINARY ourselves. */</span></div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="preprocessor">#ifndef O_BINARY</span></div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="preprocessor">#define O_BINARY 0</span></div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">/*</span></div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> * Stream open flags.</span></div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> */</span></div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment">/* The stream was opened for reading. */</span></div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#define JAS_STREAM_READ 0x0001</span></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment">/* The stream was opened for writing. */</span></div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#define JAS_STREAM_WRITE 0x0002</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment">/* The stream was opened for appending. */</span></div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="preprocessor">#define JAS_STREAM_APPEND 0x0004</span></div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment">/* The stream was opened in binary mode. */</span></div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="preprocessor">#define JAS_STREAM_BINARY 0x0008</span></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment">/* The stream should be created/truncated. */</span></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="preprocessor">#define JAS_STREAM_CREATE 0x0010</span></div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment">/*</span></div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> * Stream buffering flags.</span></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> */</span></div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment">/* The stream is unbuffered. */</span></div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor">#define JAS_STREAM_UNBUF 0x0000</span></div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment">/* The stream is line buffered. */</span></div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor">#define JAS_STREAM_LINEBUF 0x0001</span></div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">/* The stream is fully buffered. */</span></div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#define JAS_STREAM_FULLBUF 0x0002</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment">/* The buffering mode mask. */</span></div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor">#define JAS_STREAM_BUFMODEMASK 0x000f</span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment">/* The memory associated with the buffer needs to be deallocated when the</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> stream is destroyed. */</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#define JAS_STREAM_FREEBUF 0x0008</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment">/* The buffer is currently being used for reading. */</span></div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="preprocessor">#define JAS_STREAM_RDBUF 0x0010</span></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment">/* The buffer is currently being used for writing. */</span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor">#define JAS_STREAM_WRBUF 0x0020</span></div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment">/*</span></div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> * Stream error flags.</span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> */</span></div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment">/* The end-of-file has been encountered (on reading). */</span></div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor">#define JAS_STREAM_EOF 0x0001</span></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment">/* An I/O error has been encountered on the stream. */</span></div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor">#define JAS_STREAM_ERR 0x0002</span></div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment">/* The read/write limit has been exceeded. */</span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor">#define JAS_STREAM_RWLIMIT 0x0004</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment">/* The error mask. */</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#define JAS_STREAM_ERRMASK \</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor"> (JAS_STREAM_EOF | JAS_STREAM_ERR | JAS_STREAM_RWLIMIT)</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment">/*</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"> * Other miscellaneous constants.</span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> */</span></div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment">/* The default buffer size (for fully-buffered operation). */</span></div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor">#define JAS_STREAM_BUFSIZE 8192</span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment">/* The default permission mask for file creation. */</span></div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor">#define JAS_STREAM_PERMS 0666</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="comment">/* The maximum number of characters that can always be put back on a stream. */</span></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="preprocessor">#define JAS_STREAM_MAXPUTBACK 16</span></div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment">* Types.</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment">/*</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="comment"> * Generic file object.</span></div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="comment"> */</span></div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="keyword">typedef</span> <span class="keywordtype">void</span> jas_stream_obj_t;</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment">/*</span></div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="comment"> * Generic file object operations.</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> */</span></div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>{</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="comment">/* Read characters from a file object. */</span></div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  int (*read_)(jas_stream_obj_t *obj, <span class="keywordtype">char</span> *buf, <span class="keywordtype">unsigned</span> cnt);</div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="comment">/* Write characters to a file object. */</span></div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  int (*write_)(jas_stream_obj_t *obj, <span class="keywordtype">char</span> *buf, <span class="keywordtype">unsigned</span> cnt);</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span> </div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="comment">/* Set the position for a file object. */</span></div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  long (*seek_)(jas_stream_obj_t *obj, <span class="keywordtype">long</span> offset, <span class="keywordtype">int</span> origin);</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">/* Close a file object. */</span></div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  int (*close_)(jas_stream_obj_t *obj);</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> } jas_stream_ops_t;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="comment">/*</span></div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"> * Stream object.</span></div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> */</span></div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>{</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="comment">/* The mode in which the stream was opened. */</span></div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordtype">int</span> openmode_;</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="comment">/* The buffering mode. */</span></div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordtype">int</span> bufmode_;</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">/* The stream status. */</span></div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordtype">int</span> flags_;</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">/* The start of the buffer area to use for reading/writing. */</span></div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  jas_uchar *bufbase_;</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="comment">/* The start of the buffer area excluding the extra initial space for</span></div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment"> character putback. */</span></div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  jas_uchar *bufstart_;</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="comment">/* The buffer size. */</span></div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordtype">int</span> bufsize_;</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="comment">/* The current position in the buffer. */</span></div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  jas_uchar *ptr_;</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="comment">/* The number of characters that must be read/written before</span></div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment"> the buffer needs to be filled/flushed. */</span></div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordtype">int</span> cnt_;</div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="comment">/* A trivial buffer to be used for unbuffered operation. */</span></div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  jas_uchar tinybuf_[JAS_STREAM_MAXPUTBACK + 1];</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">/* The operations for the underlying stream file object. */</span></div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keyword">const</span> jas_stream_ops_t *ops_;</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">/* The underlying stream file object. */</span></div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  jas_stream_obj_t *obj_;</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">/* The number of characters read/written. */</span></div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordtype">long</span> rwcnt_;</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">/* The maximum number of characters that may be read/written. */</span></div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">long</span> rwlimit_;</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span> } jas_stream_t;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="comment">/*</span></div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <span class="comment"> * Regular file object.</span></div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span> <span class="comment"> */</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span> </div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="comment">/*</span></div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment"> * File descriptor file object.</span></div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment"> */</span></div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>{</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordtype">int</span> fd;</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordtype">int</span> flags;</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordtype">char</span> pathname[L_tmpnam + 1];</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span> } jas_stream_fileobj_t;</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="preprocessor">#define JAS_STREAM_FILEOBJ_DELONCLOSE 0x01</span></div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="preprocessor">#define JAS_STREAM_FILEOBJ_NOCLOSE 0x02</span></div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="comment">/*</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment"> * Memory file object.</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment"> */</span></div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span> </div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">typedef</span> <span class="keyword">struct </span>{</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span> </div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="comment">/* The data associated with this file. */</span></div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  jas_uchar *buf_;</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span> </div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">/* The allocated size of the buffer for holding file data. */</span></div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordtype">size_t</span> bufsize_;</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> </div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">/* The length of the file. */</span></div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  uint_fast32_t len_;</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span> </div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="comment">/* The seek position. */</span></div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  uint_fast32_t pos_;</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span> </div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">/* Is the buffer growable? */</span></div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordtype">int</span> growable_;</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span> </div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="comment">/* Was the buffer allocated internally? */</span></div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordtype">int</span> myalloc_;</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span> } jas_stream_memobj_t;</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment">* Macros/functions for opening and closing streams.</span></div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span> </div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment">/* Open a file as a stream. */</span></div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span> JAS_DLLEXPORT jas_stream_t *jas_stream_fopen(<span class="keyword">const</span> <span class="keywordtype">char</span> *filename, <span class="keyword">const</span> <span class="keywordtype">char</span> *mode);</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span> </div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="comment">/* Open a memory buffer as a stream. */</span></div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span> JAS_DLLEXPORT jas_stream_t *jas_stream_memopen(<span class="keywordtype">char</span> *buf, <span class="keywordtype">int</span> bufsize);</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span> </div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="comment">/* Do not use this function.</span></div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="comment">It will eventually replace jas_stream_memopen. */</span></div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span> JAS_DLLEXPORT jas_stream_t *jas_stream_memopen2(<span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> bufsize);</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> </div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> <span class="comment">/* Open a file descriptor as a stream. */</span></div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span> JAS_DLLEXPORT jas_stream_t *jas_stream_fdopen(<span class="keywordtype">int</span> fd, <span class="keyword">const</span> <span class="keywordtype">char</span> *mode);</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span> </div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="comment">/* Open a stdio stream as a stream. */</span></div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span> JAS_DLLEXPORT jas_stream_t *jas_stream_freopen(<span class="keyword">const</span> <span class="keywordtype">char</span> *path, <span class="keyword">const</span> <span class="keywordtype">char</span> *mode, FILE *fp);</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="comment">/* Open a temporary file as a stream. */</span></div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> JAS_DLLEXPORT jas_stream_t *jas_stream_tmpfile(<span class="keywordtype">void</span>);</div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span> </div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="comment">/* Close a stream. */</span></div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_close(jas_stream_t *stream);</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span> </div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <span class="comment">* Macros/functions for getting/setting the stream state.</span></div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span> </div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="comment">/* Get the EOF indicator for a stream. */</span></div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span> <span class="preprocessor">#define jas_stream_eof(stream) \</span></div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="preprocessor"> (((stream)->flags_ & JAS_STREAM_EOF) != 0)</span></div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span> </div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="comment">/* Get the error indicator for a stream. */</span></div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span> <span class="preprocessor">#define jas_stream_error(stream) \</span></div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span> <span class="preprocessor"> (((stream)->flags_ & JAS_STREAM_ERR) != 0)</span></div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span> </div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="comment">/* Clear the error indicator for a stream. */</span></div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="preprocessor">#define jas_stream_clearerr(stream) \</span></div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="preprocessor"> ((stream)->flags_ &= ~(JAS_STREAM_ERR | JAS_STREAM_EOF))</span></div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span> </div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="comment">/* Get the read/write limit for a stream. */</span></div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span> <span class="preprocessor">#define jas_stream_getrwlimit(stream) \</span></div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="preprocessor"> (((const jas_stream_t *)(stream))->rwlimit_)</span></div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span> </div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="comment">/* Set the read/write limit for a stream. */</span></div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_setrwlimit(jas_stream_t *stream, <span class="keywordtype">long</span> rwlimit);</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span> </div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="comment">/* Get the read/write count for a stream. */</span></div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="preprocessor">#define jas_stream_getrwcount(stream) \</span></div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="preprocessor"> (((const jas_stream_t *)(stream))->rwcnt_)</span></div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span> </div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="comment">/* Set the read/write count for a stream. */</span></div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span> JAS_DLLEXPORT <span class="keywordtype">long</span> jas_stream_setrwcount(jas_stream_t *stream, <span class="keywordtype">long</span> rwcnt);</div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span> </div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="comment">* Macros/functions for I/O.</span></div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span> </div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment">/* Read a character from a stream. */</span></div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="preprocessor">#if defined(DEBUG)</span></div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="preprocessor">#define jas_stream_getc(stream) jas_stream_getc_func(stream)</span></div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span> <span class="preprocessor">#define jas_stream_getc(stream) jas_stream_getc_macro(stream)</span></div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span> </div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="comment">/* Write a character to a stream. */</span></div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="preprocessor">#if defined(DEBUG)</span></div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span> <span class="preprocessor">#define jas_stream_putc(stream, c) jas_stream_putc_func(stream, c)</span></div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="preprocessor">#define jas_stream_putc(stream, c) jas_stream_putc_macro(stream, c)</span></div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span> </div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span> <span class="comment">/* Read characters from a stream into a buffer. */</span></div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_read(jas_stream_t *stream, <span class="keywordtype">void</span> *buf, <span class="keywordtype">unsigned</span> cnt);</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span> </div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="comment">/* Write characters from a buffer to a stream. */</span></div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_write(jas_stream_t *stream, <span class="keyword">const</span> <span class="keywordtype">void</span> *buf, <span class="keywordtype">unsigned</span> cnt);</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span> </div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="comment">/* Write formatted output to a stream. */</span></div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_printf(jas_stream_t *stream, <span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...);</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span> </div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="comment">/* Write a string to a stream. */</span></div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_puts(jas_stream_t *stream, <span class="keyword">const</span> <span class="keywordtype">char</span> *s);</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span> </div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span> <span class="comment">/* Read a line of input from a stream. */</span></div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span> JAS_DLLEXPORT <span class="keywordtype">char</span> *jas_stream_gets(jas_stream_t *stream, <span class="keywordtype">char</span> *buf, <span class="keywordtype">int</span> bufsize);</div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span> </div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="comment">/* Look at the next character to be read from a stream without actually</span></div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="comment"> removing it from the stream. */</span></div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span> <span class="preprocessor">#define jas_stream_peekc(stream) \</span></div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span> <span class="preprocessor"> (((stream)->cnt_ <= 0) ? jas_stream_fillbuf(stream, 0) : \</span></div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span> <span class="preprocessor"> ((int)(*(stream)->ptr_)))</span></div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span> </div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span> <span class="comment">/* Put a character back on a stream. */</span></div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_ungetc(jas_stream_t *stream, <span class="keywordtype">int</span> c);</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span> </div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span> <span class="comment">* Macros/functions for getting/setting the stream position.</span></div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span> <span class="comment">/* Is it possible to seek on this stream? */</span></div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span> JAS_ATTRIBUTE_PURE</div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_isseekable(jas_stream_t *stream);</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span> </div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span> <span class="comment">/* Set the current position within the stream. */</span></div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span> JAS_DLLEXPORT <span class="keywordtype">long</span> jas_stream_seek(jas_stream_t *stream, <span class="keywordtype">long</span> offset, <span class="keywordtype">int</span> origin);</div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span> </div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="comment">/* Get the current position within the stream. */</span></div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span> JAS_ATTRIBUTE_PURE</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span> JAS_DLLEXPORT <span class="keywordtype">long</span> jas_stream_tell(jas_stream_t *stream);</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span> </div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="comment">/* Seek to the beginning of a stream. */</span></div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_rewind(jas_stream_t *stream);</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="comment">* Macros/functions for flushing.</span></div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span> </div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span> <span class="comment">/* Flush any pending output to a stream. */</span></div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_flush(jas_stream_t *stream);</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="comment">* Miscellaneous macros/functions.</span></div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span> </div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="comment">/* Copy data from one stream to another. */</span></div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_copy(jas_stream_t *dst, jas_stream_t *src, <span class="keywordtype">int</span> n);</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span> </div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span> <span class="comment">/* Display stream contents (for debugging purposes). */</span></div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_display(jas_stream_t *stream, FILE *fp, <span class="keywordtype">int</span> n);</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span> </div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="comment">/* Consume (i.e., discard) characters from stream. */</span></div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_gobble(jas_stream_t *stream, <span class="keywordtype">int</span> n);</div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span> </div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="comment">/* Write a character multiple times to a stream. */</span></div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_pad(jas_stream_t *stream, <span class="keywordtype">int</span> n, <span class="keywordtype">int</span> c);</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span> </div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="comment">/* Get the size of the file associated with the specified stream.</span></div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span> <span class="comment"> The specified stream must be seekable. */</span></div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span> JAS_ATTRIBUTE_PURE</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span> JAS_DLLEXPORT <span class="keywordtype">long</span> jas_stream_length(jas_stream_t *stream);</div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span> </div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span> <span class="comment">/******************************************************************************\</span></div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span> <span class="comment">* Internal functions.</span></div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span> <span class="comment">\******************************************************************************/</span></div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span> </div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="comment">/* The following functions are for internal use only! If you call them</span></div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span> <span class="comment">directly, you will die a horrible, miserable, and painful death! */</span></div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span> </div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span> <span class="comment">/* Read a character from a stream. */</span></div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span> <span class="preprocessor">#define jas_stream_getc_macro(stream) \</span></div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="preprocessor"> ((!((stream)->flags_ & (JAS_STREAM_ERR | JAS_STREAM_EOF | \</span></div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="preprocessor"> JAS_STREAM_RWLIMIT))) ? \</span></div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span> <span class="preprocessor"> (((stream)->rwlimit_ >= 0 && (stream)->rwcnt_ >= (stream)->rwlimit_) ? \</span></div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="preprocessor"> (stream->flags_ |= JAS_STREAM_RWLIMIT, EOF) : \</span></div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span> <span class="preprocessor"> jas_stream_getc2(stream)) : EOF)</span></div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="preprocessor">#define jas_stream_getc2(stream) \</span></div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="preprocessor"> ((--(stream)->cnt_ < 0) ? jas_stream_fillbuf(stream, 1) : \</span></div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span> <span class="preprocessor"> (++(stream)->rwcnt_, (int)(*(stream)->ptr_++)))</span></div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span> </div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span> <span class="comment">/* Write a character to a stream. */</span></div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="preprocessor">#define jas_stream_putc_macro(stream, c) \</span></div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span> <span class="preprocessor"> ((!((stream)->flags_ & (JAS_STREAM_ERR | JAS_STREAM_EOF | \</span></div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span> <span class="preprocessor"> JAS_STREAM_RWLIMIT))) ? \</span></div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span> <span class="preprocessor"> (((stream)->rwlimit_ >= 0 && (stream)->rwcnt_ >= (stream)->rwlimit_) ? \</span></div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span> <span class="preprocessor"> (stream->flags_ |= JAS_STREAM_RWLIMIT, EOF) : \</span></div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span> <span class="preprocessor"> jas_stream_putc2(stream, c)) : EOF)</span></div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span> <span class="preprocessor">#define jas_stream_putc2(stream, c) \</span></div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span> <span class="preprocessor"> (((stream)->bufmode_ |= JAS_STREAM_WRBUF, --(stream)->cnt_ < 0) ? \</span></div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span> <span class="preprocessor"> jas_stream_flushbuf((stream), (jas_uchar)(c)) : \</span></div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span> <span class="preprocessor"> (++(stream)->rwcnt_, (int)(*(stream)->ptr_++ = (c))))</span></div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span> </div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="comment">/* These prototypes need to be here for the sake of the stream_getc and</span></div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="comment">stream_putc macros. */</span></div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_fillbuf(jas_stream_t *stream, <span class="keywordtype">int</span> getflag);</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_flushbuf(jas_stream_t *stream, <span class="keywordtype">int</span> c);</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_getc_func(jas_stream_t *stream);</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span> JAS_DLLEXPORT <span class="keywordtype">int</span> jas_stream_putc_func(jas_stream_t *stream, <span class="keywordtype">int</span> c);</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span> </div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span> <span class="preprocessor">#ifdef __cplusplus</span></div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span> }</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span> </div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span> <span class="preprocessor">#endif</span></div></div><!-- fragment --></div><!-- contents -->
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