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<a href="nspath_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="preprocessor">#ifndef LIBNAGIOS_NSPATH_H_INCLUDED</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define LIBNAGIOS_NSPATH_H_INCLUDED</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#ifndef _GNU_SOURCE</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor"></span><span class="preprocessor"># ifndef NODOXY</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#  define _GNU_SOURCE 1</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor"></span><span class="preprocessor"># endif</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;errno.h&gt;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &lt;sys/stat.h&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;snprintf.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * @file nspath.h</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * @brief path handling functions</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> * This library handles path normalization and resolution. It&#39;s nifty</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> * if you want to turn relative paths into absolute ones, or if you</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="comment"> * want to make insane ones sane, but without chdir()&#39;ing your way</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> * around the filesystem.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * @{</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment"> * Normalize a path</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"> * By &quot;normalize&quot;, we mean that we convert dot-slash and dot-dot-slash</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment"> * embedded components into a legible continuous string of characters.</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"> * Leading and trailing slashes are kept exactly as they are in input,</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment"> * but with sequences of slashes reduced to a single one.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment"> * &quot;foo/bar/.././lala.txt&quot; becomes &quot;foo/lala.txt&quot;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment"> * &quot;../../../../bar/../foo/&quot; becomes &quot;/foo/&quot;</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment"> * &quot;////foo////././bar&quot; becomes &quot;/foo/bar&quot;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment"> * @param orig_path The path to normalize</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment"> * @return A newly allocated string containing the normalized path</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">char</span> *<a class="code" href="nspath_8h.html#a7874661cba4d6ffb5457eed16d0288a4">nspath_normalize</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *orig_path);</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="comment"> * Make the &quot;base&quot;-relative path &quot;rel_path&quot; absolute.</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="comment"> * Turns the relative path &quot;rel_path&quot; into an absolute path and</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment"> * resolves it as if we were currently in &quot;base&quot;. If &quot;base&quot; is</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment"> * NULL, the current working directory is used. If &quot;base&quot; is not</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment"> * null, it should be an absolute path for the result to make</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment"> * sense.</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="comment"> * @param rel_path The relative path to convert</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="comment"> * @param base The base directory (if NULL, we use current working dir)</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="comment"> * @return A newly allocated string containing the absolute path</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">char</span> *<a class="code" href="nspath_8h.html#ade9ccb53fdbcc123b9468603b1ff2919">nspath_absolute</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *rel_path, <span class="keyword">const</span> <span class="keywordtype">char</span> *base);</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment"> * Canonicalize the &quot;base&quot;-relative path &quot;rel_path&quot;.</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment"> * errno gets properly set in case of errors.</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment"> * @param rel_path The path to transform</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment"> * @param base The base we should operate relative to</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment"> * @return Newly allocated canonical path on success, NULL on errors</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">char</span> *<a class="code" href="nspath_8h.html#aba277ee8aa56daaf0512aa278b68400c">nspath_real</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *rel_path, <span class="keyword">const</span> <span class="keywordtype">char</span> *base);</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment"> * Get absolute dirname of &quot;path&quot;, relative to &quot;base&quot;</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment"> * @param path Full path to target object (file or subdir)</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment"> * @param base The base directory (if NULL, we use current working dir)</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment"> * @return NULL on errors, allocated absolute directory name on success</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">char</span> *<a class="code" href="nspath_8h.html#a33faaeee14f2933798ec177d9d9ccc7b">nspath_absolute_dirname</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *path, <span class="keyword">const</span> <span class="keywordtype">char</span> *base);</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="comment"> * Recursively create a directory, just like mkdir_p would.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<span class="comment"> * @note This function *will* taint errno with ENOENT if any path</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment"> * component has to be created.</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment"> * @note If &quot;path&quot; has a trailing slash, NSPATH_MKDIR_SKIP_LAST</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment"> * won&#39;t have any effect. That&#39;s considered a feature, since the</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment"> * option is designed so one can send a file-path to the function</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="comment"> * and have it create the directory structure for it.</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment"> * @param path Path to create, in normalized form</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment"> * @param mode Filemode (same as mkdir() takes)</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment"> * @param options Options flag. See NSPATH_MKDIR_* for or-able options</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment"> * @return 0 on success, -1 on errors and errno will hold error code</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment"> *   from either stat() or mkdir().</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="keyword">extern</span> <span class="keywordtype">int</span> <a class="code" href="nspath_8h.html#a1afa9d79f14a4b33413f5dbdaa12e262">nspath_mkdir_p</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *path, mode_t mode, <span class="keywordtype">int</span> options);</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="comment">/** Don&#39;t mkdir() last element of path when calling nspath_mkdir_p() */</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"><a class="line" href="nspath_8h.html#a5345faf70185d3be4d5c1cd46dbc314a">   88</a></span>&#160;<span class="preprocessor">#define NSPATH_MKDIR_SKIP_LAST (1 &lt;&lt; 0)</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="preprocessor"></span><span class="comment"></span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">/** @} */</span></div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="nspath_8h_html_a7874661cba4d6ffb5457eed16d0288a4"><div class="ttname"><a href="nspath_8h.html#a7874661cba4d6ffb5457eed16d0288a4">nspath_normalize</a></div><div class="ttdeci">char * nspath_normalize(const char *orig_path)</div><div class="ttdoc">Normalize a path By &amp;quot;normalize&amp;quot;, we mean that we convert dot-slash and dot-dot-slash embedded compone...</div></div>
<div class="ttc" id="nspath_8h_html_aba277ee8aa56daaf0512aa278b68400c"><div class="ttname"><a href="nspath_8h.html#aba277ee8aa56daaf0512aa278b68400c">nspath_real</a></div><div class="ttdeci">char * nspath_real(const char *rel_path, const char *base)</div><div class="ttdoc">Canonicalize the &amp;quot;base&amp;quot;-relative path &amp;quot;rel_path&amp;quot;. </div></div>
<div class="ttc" id="nspath_8h_html_ade9ccb53fdbcc123b9468603b1ff2919"><div class="ttname"><a href="nspath_8h.html#ade9ccb53fdbcc123b9468603b1ff2919">nspath_absolute</a></div><div class="ttdeci">char * nspath_absolute(const char *rel_path, const char *base)</div><div class="ttdoc">Make the &amp;quot;base&amp;quot;-relative path &amp;quot;rel_path&amp;quot; absolute. </div></div>
<div class="ttc" id="nspath_8h_html_a33faaeee14f2933798ec177d9d9ccc7b"><div class="ttname"><a href="nspath_8h.html#a33faaeee14f2933798ec177d9d9ccc7b">nspath_absolute_dirname</a></div><div class="ttdeci">char * nspath_absolute_dirname(const char *path, const char *base)</div><div class="ttdoc">Get absolute dirname of &amp;quot;path&amp;quot;, relative to &amp;quot;base&amp;quot;. </div></div>
<div class="ttc" id="nspath_8h_html_a1afa9d79f14a4b33413f5dbdaa12e262"><div class="ttname"><a href="nspath_8h.html#a1afa9d79f14a4b33413f5dbdaa12e262">nspath_mkdir_p</a></div><div class="ttdeci">int nspath_mkdir_p(const char *path, mode_t mode, int options)</div><div class="ttdoc">Recursively create a directory, just like mkdir_p would. </div></div>
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