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  83. <li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_9d7a14d6d9adcbe4c35dbdb88d867e2e.html">grpc</a></li><li class="navelem"><a class="el" href="dir_cad3142e04109052413f2d2a2d1813b0.html">support</a></li>  </ul>
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  88. <div class="title">cmdline.h</div>  </div>
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    90. 

  90. <div class="contents">
    91. 

  91. <a href="cmdline_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div>
    92. 

  92. <div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> *</span></div>
    93. 

  93. <div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright 2015, Google Inc.</span></div>
    94. 

  94. <div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * All rights reserved.</span></div>
    95. 

  95. <div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
    96. 

  96. <div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
    97. 

  97. <div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modification, are permitted provided that the following conditions are</span></div>
    98. 

  98. <div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * met:</span></div>
    99. 

  99. <div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> *</span></div>
    100. 

  100. <div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> *     * Redistributions of source code must retain the above copyright</span></div>
    101. 

  101. <div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * notice, this list of conditions and the following disclaimer.</span></div>
    102. 

  102. <div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> *     * Redistributions in binary form must reproduce the above</span></div>
    103. 

  103. <div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * copyright notice, this list of conditions and the following disclaimer</span></div>
    104. 

  104. <div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * in the documentation and/or other materials provided with the</span></div>
    105. 

  105. <div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * distribution.</span></div>
    106. 

  106. <div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> *     * Neither the name of Google Inc. nor the names of its</span></div>
    107. 

  107. <div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * contributors may be used to endorse or promote products derived from</span></div>
    108. 

  108. <div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * this software without specific prior written permission.</span></div>
    109. 

  109. <div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> *</span></div>
    110. 

  110. <div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
    111. 

  111. <div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
    112. 

  112. <div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span></div>
    113. 

  113. <div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span></div>
    114. 

  114. <div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"> * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
    115. 

  115. <div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment"> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span></div>
    116. 

  116. <div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span></div>
    117. 

  117. <div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment"> * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span></div>
    118. 

  118. <div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"> * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span></div>
    119. 

  119. <div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment"> * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div>
    120. 

  120. <div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
    121. 

  121. <div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment"> *</span></div>
    122. 

  122. <div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment"> */</span></div>
    123. 

  123. <div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;</div>
    124. 

  124. <div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#ifndef GRPC_SUPPORT_CMDLINE_H</span></div>
    125. 

  125. <div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define GRPC_SUPPORT_CMDLINE_H</span></div>
    126. 

  126. <div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor"></span></div>
    127. 

  127. <div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div>
    128. 

  128. <div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {</div>
    129. 

  129. <div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#endif</span></div>
    130. 

  130. <div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor"></span></div>
    131. 

  131. <div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment">/* Simple command line parser.</span></div>
    132. 

  132. <div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment"></span></div>
    133. 

  133. <div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">   Supports flags that can be specified as -foo, --foo, --no-foo, -no-foo, etc</span></div>
    134. 

  134. <div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">   And integers, strings that can be specified as -foo=4, -foo blah, etc</span></div>
    135. 

  135. <div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment"></span></div>
    136. 

  136. <div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment">   No support for short command line options (but we may get that in the</span></div>
    137. 

  137. <div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment">   future.)</span></div>
    138. 

  138. <div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment"></span></div>
    139. 

  139. <div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment">   Usage (for a program with a single flag argument &#39;foo&#39;):</span></div>
    140. 

  140. <div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment"></span></div>
    141. 

  141. <div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">   int main(int argc, char **argv) {</span></div>
    142. 

  142. <div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment">     gpr_cmdline *cl;</span></div>
    143. 

  143. <div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">     int verbose = 0;</span></div>
    144. 

  144. <div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment"></span></div>
    145. 

  145. <div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">     cl = gpr_cmdline_create(&quot;My cool tool&quot;);</span></div>
    146. 

  146. <div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">     gpr_cmdline_add_int(cl, &quot;verbose&quot;, &quot;Produce verbose output?&quot;, &amp;verbose);</span></div>
    147. 

  147. <div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment">     gpr_cmdline_parse(cl, argc, argv);</span></div>
    148. 

  148. <div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment">     gpr_cmdline_destroy(cl);</span></div>
    149. 

  149. <div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment"></span></div>
    150. 

  150. <div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="comment">     if (verbose) {</span></div>
    151. 

  151. <div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment">       gpr_log(GPR_INFO, &quot;Goodbye cruel world!&quot;);</span></div>
    152. 

  152. <div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">     }</span></div>
    153. 

  153. <div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment"></span></div>
    154. 

  154. <div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment">     return 0;</span></div>
    155. 

  155. <div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">   } */</span></div>
    156. 

  156. <div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div>
    157. 

  157. <div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">   67</a></span>&#160;<span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> <a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a>;</div>
    158. 

  158. <div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
    159. 

  159. <div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">/* Construct a command line parser: takes a short description of the tool</span></div>
    160. 

  160. <div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment">   doing the parsing */</span></div>
    161. 

  161. <div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> *<a class="code" href="cmdline_8h.html#a608f6fbc4edfb4d2c18e3c0660fd8773">gpr_cmdline_create</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *description);</div>
    162. 

  162. <div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment">/* Add an integer parameter, with a name (used on the command line) and some</span></div>
    163. 

  163. <div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment">   helpful text (used in the command usage) */</span></div>
    164. 

  164. <div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#a0fc8cd330751e9876e8635189a1bc10f">gpr_cmdline_add_int</a>(<a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> *cl, <span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> <span class="keywordtype">char</span> *help,</div>
    165. 

  165. <div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;                         <span class="keywordtype">int</span> *value);</div>
    166. 

  166. <div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment">/* The same, for a boolean flag */</span></div>
    167. 

  167. <div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#ac5ecfdfc605896c29df846b1e268045e">gpr_cmdline_add_flag</a>(<a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> *cl, <span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> <span class="keywordtype">char</span> *help,</div>
    168. 

  168. <div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;                          <span class="keywordtype">int</span> *value);</div>
    169. 

  169. <div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment">/* And for a string */</span></div>
    170. 

  170. <div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#a34568676c089f3284dc8f7d8d706b1d3">gpr_cmdline_add_string</a>(<a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> *cl, <span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> <span class="keywordtype">char</span> *help,</div>
    171. 

  171. <div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;                            <span class="keywordtype">char</span> **value);</div>
    172. 

  172. <div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">/* Set a callback for non-named arguments */</span></div>
    173. 

  173. <div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#afcf023a5eb082034a650a0f0177d1fe9">gpr_cmdline_on_extra_arg</a>(</div>
    174. 

  174. <div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    <a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> *cl, <span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> <span class="keywordtype">char</span> *help,</div>
    175. 

  175. <div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="keywordtype">void</span> (*on_extra_arg)(<span class="keywordtype">void</span> *user_data, <span class="keyword">const</span> <span class="keywordtype">char</span> *arg), <span class="keywordtype">void</span> *user_data);</div>
    176. 

  176. <div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">/* Parse the command line */</span></div>
    177. 

  177. <div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#a34b66021bbbb9f6a6e8a60c0ae34f8a4">gpr_cmdline_parse</a>(<a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> *cl, <span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv);</div>
    178. 

  178. <div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="comment">/* Destroy the parser */</span></div>
    179. 

  179. <div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#a018f826ce313b02d2773ef97b8df5f98">gpr_cmdline_destroy</a>(<a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> *cl);</div>
    180. 

  180. <div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">/* Get a string describing usage */</span></div>
    181. 

  181. <div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keywordtype">char</span> *<a class="code" href="cmdline_8h.html#a4eac81d047bdc6e679079309bf60f030">gpr_cmdline_usage_string</a>(<a class="code" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a> *cl, <span class="keyword">const</span> <span class="keywordtype">char</span> *argv0);</div>
    182. 

  182. <div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div>
    183. 

  183. <div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div>
    184. 

  184. <div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="preprocessor"></span>}</div>
    185. 

  185. <div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="preprocessor">#endif</span></div>
    186. 

  186. <div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="preprocessor"></span></div>
    187. 

  187. <div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* GRPC_SUPPORT_CMDLINE_H */</span><span class="preprocessor"></span></div>
    188. 

  188. <div class="ttc" id="cmdline_8h_html_aaad93cd9bfc32c54fc89f7c2f3b74eb6"><div class="ttname"><a href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6">gpr_cmdline</a></div><div class="ttdeci">struct gpr_cmdline gpr_cmdline</div><div class="ttdef"><b>Definition:</b> cmdline.h:67</div></div>
    189. 

  189. <div class="ttc" id="cmdline_8h_html_a018f826ce313b02d2773ef97b8df5f98"><div class="ttname"><a href="cmdline_8h.html#a018f826ce313b02d2773ef97b8df5f98">gpr_cmdline_destroy</a></div><div class="ttdeci">void gpr_cmdline_destroy(gpr_cmdline *cl)</div></div>
    190. 

  190. <div class="ttc" id="cmdline_8h_html_a34b66021bbbb9f6a6e8a60c0ae34f8a4"><div class="ttname"><a href="cmdline_8h.html#a34b66021bbbb9f6a6e8a60c0ae34f8a4">gpr_cmdline_parse</a></div><div class="ttdeci">void gpr_cmdline_parse(gpr_cmdline *cl, int argc, char **argv)</div></div>
    191. 

  191. <div class="ttc" id="cmdline_8h_html_a0fc8cd330751e9876e8635189a1bc10f"><div class="ttname"><a href="cmdline_8h.html#a0fc8cd330751e9876e8635189a1bc10f">gpr_cmdline_add_int</a></div><div class="ttdeci">void gpr_cmdline_add_int(gpr_cmdline *cl, const char *name, const char *help, int *value)</div></div>
    192. 

  192. <div class="ttc" id="cmdline_8h_html_afcf023a5eb082034a650a0f0177d1fe9"><div class="ttname"><a href="cmdline_8h.html#afcf023a5eb082034a650a0f0177d1fe9">gpr_cmdline_on_extra_arg</a></div><div class="ttdeci">void gpr_cmdline_on_extra_arg(gpr_cmdline *cl, const char *name, const char *help, void(*on_extra_arg)(void *user_data, const char *arg), void *user_data)</div></div>
    193. 

  193. <div class="ttc" id="cmdline_8h_html_a608f6fbc4edfb4d2c18e3c0660fd8773"><div class="ttname"><a href="cmdline_8h.html#a608f6fbc4edfb4d2c18e3c0660fd8773">gpr_cmdline_create</a></div><div class="ttdeci">gpr_cmdline * gpr_cmdline_create(const char *description)</div></div>
    194. 

  194. <div class="ttc" id="cmdline_8h_html_a4eac81d047bdc6e679079309bf60f030"><div class="ttname"><a href="cmdline_8h.html#a4eac81d047bdc6e679079309bf60f030">gpr_cmdline_usage_string</a></div><div class="ttdeci">char * gpr_cmdline_usage_string(gpr_cmdline *cl, const char *argv0)</div></div>
    195. 

  195. <div class="ttc" id="cmdline_8h_html_ac5ecfdfc605896c29df846b1e268045e"><div class="ttname"><a href="cmdline_8h.html#ac5ecfdfc605896c29df846b1e268045e">gpr_cmdline_add_flag</a></div><div class="ttdeci">void gpr_cmdline_add_flag(gpr_cmdline *cl, const char *name, const char *help, int *value)</div></div>
    196. 

  196. <div class="ttc" id="cmdline_8h_html_a34568676c089f3284dc8f7d8d706b1d3"><div class="ttname"><a href="cmdline_8h.html#a34568676c089f3284dc8f7d8d706b1d3">gpr_cmdline_add_string</a></div><div class="ttdeci">void gpr_cmdline_add_string(gpr_cmdline *cl, const char *name, const char *help, char **value)</div></div>
    197. 

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    198. 

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