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<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> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Copyright 2015, Google Inc.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * modification, are permitted provided that the following conditions are</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * met:</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"> * * Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * * Redistributions in binary form must reproduce the above</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * copyright notice, this list of conditions and the following disclaimer</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * in the documentation and/or other materials provided with the</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * distribution.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * * Neither the name of Google Inc. nor the names of its</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * contributors may be used to endorse or promote products derived from</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * this software without specific prior written permission.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#ifndef GRPC_SUPPORT_CMDLINE_H</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor"></span><span class="preprocessor">#define GRPC_SUPPORT_CMDLINE_H</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">/* Simple command line parser.</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"></span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> Supports flags that can be specified as -foo, --foo, --no-foo, -no-foo, etc</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> And integers, strings that can be specified as -foo=4, -foo blah, etc</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"></span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> No support for short command line options (but we may get that in the</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> future.)</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"></span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> Usage (for a program with a single flag argument 'foo'):</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"></span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> int main(int argc, char **argv) {</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> gpr_cmdline *cl;</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> int verbose = 0;</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> cl = gpr_cmdline_create("My cool tool");</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> gpr_cmdline_add_int(cl, "verbose", "Produce verbose output?", &verbose);</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> gpr_cmdline_parse(cl, argc, argv);</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> gpr_cmdline_destroy(cl);</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"></span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> if (verbose) {</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> gpr_log(GPR_INFO, "Goodbye cruel world!");</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> <span class="comment"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> return 0;</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> } */</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="cmdline_8h.html#aaad93cd9bfc32c54fc89f7c2f3b74eb6"> 67</a></span> <span class="keyword">typedef</span> <span class="keyword">struct </span><a class="code" href="structgpr__cmdline.html">gpr_cmdline</a> <a class="code" href="structgpr__cmdline.html">gpr_cmdline</a>;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment">/* Construct a command line parser: takes a short description of the tool</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> doing the parsing */</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <a class="code" href="structgpr__cmdline.html">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> *<a class="code" href="structgpr__cmdline.html#ad7ac4f9585e0c93920079bec3a258c5d">description</a>);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment">/* Add an integer parameter, with a name (used on the command line) and some</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> helpful text (used in the command usage) */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#a0fc8cd330751e9876e8635189a1bc10f">gpr_cmdline_add_int</a>(<a class="code" href="structgpr__cmdline.html">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>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">int</span> *<a class="code" href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a>);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment">/* The same, for a boolean flag */</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#ac5ecfdfc605896c29df846b1e268045e">gpr_cmdline_add_flag</a>(<a class="code" href="structgpr__cmdline.html">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>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">int</span> *<a class="code" href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a>);</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">/* And for a string */</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#a34568676c089f3284dc8f7d8d706b1d3">gpr_cmdline_add_string</a>(<a class="code" href="structgpr__cmdline.html">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>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">char</span> **<a class="code" href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a>);</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment">/* Set a callback for non-named arguments */</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#afcf023a5eb082034a650a0f0177d1fe9">gpr_cmdline_on_extra_arg</a>(</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="structgpr__cmdline.html">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>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <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> *<a class="code" href="structarg.html">arg</a>), <span class="keywordtype">void</span> *user_data);</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment">/* Parse the command line */</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#a34b66021bbbb9f6a6e8a60c0ae34f8a4">gpr_cmdline_parse</a>(<a class="code" href="structgpr__cmdline.html">gpr_cmdline</a> *cl, <span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">/* Destroy the parser */</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="keywordtype">void</span> <a class="code" href="cmdline_8h.html#a018f826ce313b02d2773ef97b8df5f98">gpr_cmdline_destroy</a>(<a class="code" href="structgpr__cmdline.html">gpr_cmdline</a> *cl);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment">/* Get a string describing usage */</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keywordtype">char</span> *<a class="code" href="cmdline_8h.html#a4eac81d047bdc6e679079309bf60f030">gpr_cmdline_usage_string</a>(<a class="code" href="structgpr__cmdline.html">gpr_cmdline</a> *cl, <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="structgpr__cmdline.html#ad262ed090b9dca4ea6d4bd7be222a40e">argv0</a>);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor">#endif </span><span class="comment">/* GRPC_SUPPORT_CMDLINE_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="hpack__table_8c_html_a8556878012feffc9e0beb86cd78f424d"><div class="ttname"><a href="hpack__table_8c.html#a8556878012feffc9e0beb86cd78f424d">value</a></div><div class="ttdeci">const char * value</div><div class="ttdef"><b>Definition:</b> hpack_table.c:44</div></div>
<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 class="ttdef"><b>Definition:</b> cmdline.c:81</div></div>
<div class="ttc" id="structarg_html"><div class="ttname"><a href="structarg.html">arg</a></div><div class="ttdef"><b>Definition:</b> cmdline.c:47</div></div>
<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 class="ttdef"><b>Definition:</b> cmdline.c:314</div></div>
<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 class="ttdef"><b>Definition:</b> cmdline.c:108</div></div>
<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 class="ttdef"><b>Definition:</b> cmdline.c:123</div></div>
<div class="ttc" id="structgpr__cmdline_html_ad7ac4f9585e0c93920079bec3a258c5d"><div class="ttname"><a href="structgpr__cmdline.html#ad7ac4f9585e0c93920079bec3a258c5d">gpr_cmdline::description</a></div><div class="ttdeci">const char * description</div><div class="ttdef"><b>Definition:</b> cmdline.c:56</div></div>
<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 class="ttdef"><b>Definition:</b> cmdline.c:71</div></div>
<div class="ttc" id="structgpr__cmdline_html"><div class="ttname"><a href="structgpr__cmdline.html">gpr_cmdline</a></div><div class="ttdef"><b>Definition:</b> cmdline.c:55</div></div>
<div class="ttc" id="structgpr__cmdline_html_ad262ed090b9dca4ea6d4bd7be222a40e"><div class="ttname"><a href="structgpr__cmdline.html#ad262ed090b9dca4ea6d4bd7be222a40e">gpr_cmdline::argv0</a></div><div class="ttdeci">const char * argv0</div><div class="ttdef"><b>Definition:</b> cmdline.c:58</div></div>
<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 class="ttdef"><b>Definition:</b> cmdline.c:160</div></div>
<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 class="ttdef"><b>Definition:</b> cmdline.c:113</div></div>
<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 class="ttdef"><b>Definition:</b> cmdline.c:118</div></div>
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