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Pass the name and its length to <tt>git_attr()</tt> function to obtain the object of this type. The internal representation of this structure is of no interest to the calling programs. </p> </dd> <dt class="hdlist1"> <tt>struct git_attr_check</tt> </dt> <dd> <p> This structure represents a set of attributes to check in a call to <tt>git_checkattr()</tt> function, and receives the results. </p> </dd> </dl></div> </div> <h2 id="_calling_sequence">Calling Sequence</h2> <div class="sectionbody"> <div class="ulist"><ul> <li> <p> Prepare an array of <tt>struct git_attr_check</tt> to define the list of attributes you would want to check. To populate this array, you would need to define necessary attributes by calling <tt>git_attr()</tt> function. </p> </li> <li> <p> Call git_checkattr() to check the attributes for the path. </p> </li> <li> <p> Inspect <tt>git_attr_check</tt> structure to see how each of the attribute in the array is defined for the path. </p> </li> </ul></div> </div> <h2 id="_attribute_values">Attribute Values</h2> <div class="sectionbody"> <div class="paragraph"><p>An attribute for a path can be in one of four states: Set, Unset, Unspecified or set to a string, and <tt>.value</tt> member of <tt>struct git_attr_check</tt> records it. There are three macros to check these:</p></div> <div class="dlist"><dl> <dt class="hdlist1"> <tt>ATTR_TRUE()</tt> </dt> <dd> <p> Returns true if the attribute is Set for the path. </p> </dd> <dt class="hdlist1"> <tt>ATTR_FALSE()</tt> </dt> <dd> <p> Returns true if the attribute is Unset for the path. </p> </dd> <dt class="hdlist1"> <tt>ATTR_UNSET()</tt> </dt> <dd> <p> Returns true if the attribute is Unspecified for the path. </p> </dd> </dl></div> <div class="paragraph"><p>If none of the above returns true, <tt>.value</tt> member points at a string value of the attribute for the path.</p></div> </div> <h2 id="_example">Example</h2> <div class="sectionbody"> <div class="paragraph"><p>To see how attributes "crlf" and "indent" are set for different paths.</p></div> <div class="olist arabic"><ol class="arabic"> <li> <p> Prepare an array of <tt>struct git_attr_check</tt> with two elements (because we are checking two attributes). Initialize their <tt>attr</tt> member with pointers to <tt>struct git_attr</tt> obtained by calling <tt>git_attr()</tt>: </p> </li> </ol></div> <div class="listingblock"> <div class="content"> <pre><tt>static struct git_attr_check check[2]; static void setup_check(void) { if (check[0].attr) return; /* already done */ check[0].attr = git_attr("crlf", 4); check[1].attr = git_attr("ident", 5); }</tt></pre> </div></div> <div class="olist arabic"><ol class="arabic"> <li> <p> Call <tt>git_checkattr()</tt> with the prepared array of <tt>struct git_attr_check</tt>: </p> </li> </ol></div> <div class="listingblock"> <div class="content"> <pre><tt> const char *path; setup_check(); git_checkattr(path, ARRAY_SIZE(check), check);</tt></pre> </div></div> <div class="olist arabic"><ol class="arabic"> <li> <p> Act on <tt>.value</tt> member of the result, left in <tt>check[]</tt>: </p> </li> </ol></div> <div class="listingblock"> <div class="content"> <pre><tt> const char *value = check[0].value; if (ATTR_TRUE(value)) { The attribute is Set, by listing only the name of the attribute in the gitattributes file for the path. } else if (ATTR_FALSE(value)) { The attribute is Unset, by listing the name of the attribute prefixed with a dash - for the path. } else if (ATTR_UNSET(value)) { The attribute is not set nor unset for the path. } else if (!strcmp(value, "input")) { If none of ATTR_TRUE(), ATTR_FALSE(), or ATTR_UNSET() is true, the value is a string set in the gitattributes file for the path by saying "attr=value". } else if (... other check using value as string ...) { ... }</tt></pre> </div></div> <div class="paragraph"><p>(JC)</p></div> </div> <div id="footer"> <div id="footer-text"> Last updated 2010-12-16 02:52:11 UTC </div> </div> </body> </html>