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| <head> | |
| <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" /> | |
| <meta name="generator" content="AsciiDoc 8.6.10" /> | |
| <title>gitattributes API</title> | |
| <style type="text/css"> | |
| /* Shared CSS for AsciiDoc xhtml11 and html5 backends */ | |
| /* Default font. */ | |
| body { | |
| font-family: Georgia,serif; | |
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| h1, h2, h3, h4, h5, h6, | |
| div.title, caption.title, | |
| thead, p.table.header, | |
| #toctitle, | |
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| padding: 0; | |
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| /* Block element titles. */ | |
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| margin-top: 0; | |
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| td div.title:first-child { | |
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| padding-left: 1.0em; | |
| margin-left: 1.0em; | |
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| /* DEPRECATED: Pre version 8.2.7 verse style literal block. */ | |
| div.verseblock + div.attribution { | |
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| font-size: 1.1em; | |
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| color: #527bbd; | |
| padding-right: 0.5em; | |
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| padding-left: 0.5em; | |
| border-left: 3px solid #dddddd; | |
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| div.exampleblock > div.content { | |
| border-left: 3px solid #dddddd; | |
| padding-left: 0.5em; | |
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| div.imageblock div.content { padding-left: 0; } | |
| span.image img { border-style: none; vertical-align: text-bottom; } | |
| a.image:visited { color: white; } | |
| dl { | |
| margin-top: 0.8em; | |
| margin-bottom: 0.8em; | |
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| margin-top: 0.5em; | |
| margin-bottom: 0; | |
| font-style: normal; | |
| color: navy; | |
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| dd > *:first-child { | |
| margin-top: 0.1em; | |
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| list-style-position: outside; | |
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| ol.arabic { | |
| list-style-type: decimal; | |
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| ol.loweralpha { | |
| list-style-type: lower-alpha; | |
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| ol.upperalpha { | |
| list-style-type: upper-alpha; | |
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| ol.lowerroman { | |
| list-style-type: lower-roman; | |
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| ol.upperroman { | |
| list-style-type: upper-roman; | |
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| div.compact ul, div.compact ol, | |
| div.compact p, div.compact p, | |
| div.compact div, div.compact div { | |
| margin-top: 0.1em; | |
| margin-bottom: 0.1em; | |
| } | |
| tfoot { | |
| font-weight: bold; | |
| } | |
| td > div.verse { | |
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| div.hdlist { | |
| margin-top: 0.8em; | |
| margin-bottom: 0.8em; | |
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| div.hdlist tr { | |
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| dt.hdlist1.strong, td.hdlist1.strong { | |
| font-weight: bold; | |
| } | |
| td.hdlist1 { | |
| vertical-align: top; | |
| font-style: normal; | |
| padding-right: 0.8em; | |
| color: navy; | |
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| td.hdlist2 { | |
| vertical-align: top; | |
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| div.hdlist.compact tr { | |
| margin: 0; | |
| padding-bottom: 0; | |
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| .comment { | |
| background: yellow; | |
| } | |
| .footnote, .footnoteref { | |
| font-size: 0.8em; | |
| } | |
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| vertical-align: super; | |
| } | |
| #footnotes { | |
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| padding: 7px 0 0 0; | |
| } | |
| #footnotes div.footnote { | |
| margin: 0 0 5px 0; | |
| } | |
| #footnotes hr { | |
| border: none; | |
| border-top: 1px solid silver; | |
| height: 1px; | |
| text-align: left; | |
| margin-left: 0; | |
| width: 20%; | |
| min-width: 100px; | |
| } | |
| div.colist td { | |
| padding-right: 0.5em; | |
| padding-bottom: 0.3em; | |
| vertical-align: top; | |
| } | |
| div.colist td img { | |
| margin-top: 0.3em; | |
| } | |
| @media print { | |
| #footer-badges { display: none; } | |
| } | |
| #toc { | |
| margin-bottom: 2.5em; | |
| } | |
| #toctitle { | |
| color: #527bbd; | |
| font-size: 1.1em; | |
| font-weight: bold; | |
| margin-top: 1.0em; | |
| margin-bottom: 0.1em; | |
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| font-size: 0.9em; | |
| } | |
| span.aqua { color: aqua; } | |
| span.black { color: black; } | |
| span.blue { color: blue; } | |
| span.fuchsia { color: fuchsia; } | |
| span.gray { color: gray; } | |
| span.green { color: green; } | |
| span.lime { color: lime; } | |
| span.maroon { color: maroon; } | |
| span.navy { color: navy; } | |
| span.olive { color: olive; } | |
| span.purple { color: purple; } | |
| span.red { color: red; } | |
| span.silver { color: silver; } | |
| span.teal { color: teal; } | |
| span.white { color: white; } | |
| span.yellow { color: yellow; } | |
| span.aqua-background { background: aqua; } | |
| span.black-background { background: black; } | |
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| span.lime-background { background: lime; } | |
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| span.big { font-size: 2em; } | |
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| span.line-through { text-decoration: line-through; } | |
| div.unbreakable { page-break-inside: avoid; } | |
| /* | |
| * xhtml11 specific | |
| * | |
| * */ | |
| div.tableblock { | |
| margin-top: 1.0em; | |
| margin-bottom: 1.5em; | |
| } | |
| div.tableblock > table { | |
| border: 3px solid #527bbd; | |
| } | |
| thead, p.table.header { | |
| font-weight: bold; | |
| color: #527bbd; | |
| } | |
| p.table { | |
| margin-top: 0; | |
| } | |
| /* Because the table frame attribute is overriden by CSS in most browsers. */ | |
| div.tableblock > table[frame="void"] { | |
| border-style: none; | |
| } | |
| div.tableblock > table[frame="hsides"] { | |
| border-left-style: none; | |
| border-right-style: none; | |
| } | |
| div.tableblock > table[frame="vsides"] { | |
| border-top-style: none; | |
| border-bottom-style: none; | |
| } | |
| /* | |
| * html5 specific | |
| * | |
| * */ | |
| table.tableblock { | |
| margin-top: 1.0em; | |
| margin-bottom: 1.5em; | |
| } | |
| thead, p.tableblock.header { | |
| font-weight: bold; | |
| color: #527bbd; | |
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| p.tableblock { | |
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| border-spacing: 0px; | |
| border-style: solid; | |
| border-color: #527bbd; | |
| border-collapse: collapse; | |
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| border-width: 1px; | |
| padding: 4px; | |
| border-style: solid; | |
| border-color: #527bbd; | |
| } | |
| table.tableblock.frame-topbot { | |
| border-left-style: hidden; | |
| border-right-style: hidden; | |
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| table.tableblock.frame-none { | |
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| } | |
| th.tableblock.halign-left, td.tableblock.halign-left { | |
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| th.tableblock.halign-center, td.tableblock.halign-center { | |
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| th.tableblock.halign-right, td.tableblock.halign-right { | |
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| th.tableblock.valign-top, td.tableblock.valign-top { | |
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| th.tableblock.valign-middle, td.tableblock.valign-middle { | |
| vertical-align: middle; | |
| } | |
| th.tableblock.valign-bottom, td.tableblock.valign-bottom { | |
| vertical-align: bottom; | |
| } | |
| /* | |
| * manpage specific | |
| * | |
| * */ | |
| body.manpage h1 { | |
| padding-top: 0.5em; | |
| padding-bottom: 0.5em; | |
| border-top: 2px solid silver; | |
| border-bottom: 2px solid silver; | |
| } | |
| body.manpage h2 { | |
| border-style: none; | |
| } | |
| body.manpage div.sectionbody { | |
| margin-left: 3em; | |
| } | |
| @media print { | |
| body.manpage div#toc { display: none; } | |
| } | |
| </style> | |
| <script type="text/javascript"> | |
| /*<+'])'); | |
| // Function that scans the DOM tree for header elements (the DOM2 | |
| // nodeIterator API would be a better technique but not supported by all | |
| // browsers). | |
| var iterate = function (el) { | |
| for (var i = el.firstChild; i != null; i = i.nextSibling) { | |
| if (i.nodeType == 1 /* Node.ELEMENT_NODE */) { | |
| var mo = re.exec(i.tagName); | |
| if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") { | |
| result[result.length] = new TocEntry(i, getText(i), mo[1]-1); | |
| } | |
| iterate(i); | |
| } | |
| } | |
| } | |
| iterate(el); | |
| return result; | |
| } | |
| var toc = document.getElementById("toc"); | |
| if (!toc) { | |
| return; | |
| } | |
| // Delete existing TOC entries in case we're reloading the TOC. | |
| var tocEntriesToRemove = []; | |
| var i; | |
| for (i = 0; i < toc.childNodes.length; i++) { | |
| var entry = toc.childNodes[i]; | |
| if (entry.nodeName.toLowerCase() == 'div' | |
| && entry.getAttribute("class") | |
| && entry.getAttribute("class").match(/^toclevel/)) | |
| tocEntriesToRemove.push(entry); | |
| } | |
| for (i = 0; i < tocEntriesToRemove.length; i++) { | |
| toc.removeChild(tocEntriesToRemove[i]); | |
| } | |
| // Rebuild TOC entries. | |
| var entries = tocEntries(document.getElementById("content"), toclevels); | |
| for (var i = 0; i < entries.length; ++i) { | |
| var entry = entries[i]; | |
| if (entry.element.id == "") | |
| entry.element.id = "_toc_" + i; | |
| var a = document.createElement("a"); | |
| a.href = "#" + entry.element.id; | |
| a.appendChild(document.createTextNode(entry.text)); | |
| var div = document.createElement("div"); | |
| div.appendChild(a); | |
| div.className = "toclevel" + entry.toclevel; | |
| toc.appendChild(div); | |
| } | |
| if (entries.length == 0) | |
| toc.parentNode.removeChild(toc); | |
| }, | |
| ///////////////////////////////////////////////////////////////////// | |
| // Footnotes generator | |
| ///////////////////////////////////////////////////////////////////// | |
| /* Based on footnote generation code from: | |
| * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html | |
| */ | |
| footnotes: function () { | |
| // Delete existing footnote entries in case we're reloading the footnodes. | |
| var i; | |
| var noteholder = document.getElementById("footnotes"); | |
| if (!noteholder) { | |
| return; | |
| } | |
| var entriesToRemove = []; | |
| for (i = 0; i < noteholder.childNodes.length; i++) { | |
| var entry = noteholder.childNodes[i]; | |
| if (entry.nodeName.toLowerCase() == 'div' && entry.getAttribute("class") == "footnote") | |
| entriesToRemove.push(entry); | |
| } | |
| for (i = 0; i < entriesToRemove.length; i++) { | |
| noteholder.removeChild(entriesToRemove[i]); | |
| } | |
| // Rebuild footnote entries. | |
| var cont = document.getElementById("content"); | |
| var spans = cont.getElementsByTagName("span"); | |
| var refs = {}; | |
| var n = 0; | |
| for (i=0; i<spans.length; i++) { | |
| if (spans[i].className == "footnote") { | |
| n++; | |
| var note = spans[i].getAttribute("data-note"); | |
| if (!note) { | |
| // Use [\s\S] in place of . so multi-line matches work. | |
| // Because JavaScript has no s (dotall) regex flag. | |
| note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1]; | |
| spans[i].innerHTML = | |
| "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n + | |
| "' title='View footnote' class='footnote'>" + n + "</a>]"; | |
| spans[i].setAttribute("data-note", note); | |
| } | |
| noteholder.innerHTML += | |
| "<div class='footnote' id='_footnote_" + n + "'>" + | |
| "<a href='#_footnoteref_" + n + "' title='Return to text'>" + | |
| n + "</a>. " + note + "</div>"; | |
| var id =spans[i].getAttribute("id"); | |
| if (id != null) refs["#"+id] = n; | |
| } | |
| } | |
| if (n == 0) | |
| noteholder.parentNode.removeChild(noteholder); | |
| else { | |
| // Process footnoterefs. | |
| for (i=0; i<spans.length; i++) { | |
| if (spans[i].className == "footnoteref") { | |
| var href = spans[i].getElementsByTagName("a")[0].getAttribute("href"); | |
| href = href.match(/#.*/)[0]; // Because IE return full URL. | |
| n = refs[href]; | |
| spans[i].innerHTML = | |
| "[<a href='#_footnote_" + n + | |
| "' title='View footnote' class='footnote'>" + n + "</a>]"; | |
| } | |
| } | |
| } | |
| }, | |
| install: function(toclevels) { | |
| var timerId; | |
| function reinstall() { | |
| asciidoc.footnotes(); | |
| if (toclevels) { | |
| asciidoc.toc(toclevels); | |
| } | |
| } | |
| function reinstallAndRemoveTimer() { | |
| clearInterval(timerId); | |
| reinstall(); | |
| } | |
| timerId = setInterval(reinstall, 500); | |
| if (document.addEventListener) | |
| document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false); | |
| else | |
| window.onload = reinstallAndRemoveTimer; | |
| } | |
| } | |
| asciidoc.install(); | |
| /*]]>*/ | |
| </script> | |
| </head> | |
| <body class="article"> | |
| <div id="header"> | |
| <h1>gitattributes API</h1> | |
| </div> | |
| <div id="content"> | |
| <div id="preamble"> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>gitattributes mechanism gives a uniform way to associate various | |
| attributes to set of paths.</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_data_structure">Data Structure</h2> | |
| <div class="sectionbody"> | |
| <div class="dlist"><dl> | |
| <dt class="hdlist1"> | |
| <code>struct git_attr</code> | |
| </dt> | |
| <dd> | |
| <p> | |
| An attribute is an opaque object that is identified by its name. | |
| Pass the name to <code>git_attr()</code> function to obtain the object of | |
| this type. The internal representation of this structure is | |
| of no interest to the calling programs. The name of the | |
| attribute can be retrieved by calling <code>git_attr_name()</code>. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| <code>struct attr_check_item</code> | |
| </dt> | |
| <dd> | |
| <p> | |
| This structure represents one attribute and its value. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| <code>struct attr_check</code> | |
| </dt> | |
| <dd> | |
| <p> | |
| This structure represents a collection of <code>attr_check_item</code>. | |
| It is passed to <code>git_check_attr()</code> function, specifying the | |
| attributes to check, and receives their values. | |
| </p> | |
| </dd> | |
| </dl></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <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 <code>.value</code> member of <code>struct | |
| attr_check_item</code> records it. There are three macros to check these:</p></div> | |
| <div class="dlist"><dl> | |
| <dt class="hdlist1"> | |
| <code>ATTR_TRUE()</code> | |
| </dt> | |
| <dd> | |
| <p> | |
| Returns true if the attribute is Set for the path. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| <code>ATTR_FALSE()</code> | |
| </dt> | |
| <dd> | |
| <p> | |
| Returns true if the attribute is Unset for the path. | |
| </p> | |
| </dd> | |
| <dt class="hdlist1"> | |
| <code>ATTR_UNSET()</code> | |
| </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, <code>.value</code> member points at a string | |
| value of the attribute for the path.</p></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_querying_specific_attributes">Querying Specific Attributes</h2> | |
| <div class="sectionbody"> | |
| <div class="ulist"><ul> | |
| <li> | |
| <p> | |
| Prepare <code>struct attr_check</code> using attr_check_initl() | |
| function, enumerating the names of attributes whose values you are | |
| interested in, terminated with a NULL pointer. Alternatively, an | |
| empty <code>struct attr_check</code> can be prepared by calling | |
| <code>attr_check_alloc()</code> function and then attributes you want to | |
| ask about can be added to it with <code>attr_check_append()</code> | |
| function. | |
| </p> | |
| </li> | |
| <li> | |
| <p> | |
| Call <code>git_check_attr()</code> to check the attributes for the path. | |
| </p> | |
| </li> | |
| <li> | |
| <p> | |
| Inspect <code>attr_check</code> structure to see how each of the | |
| attribute in the array is defined for the path. | |
| </p> | |
| </li> | |
| </ul></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_example">Example</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>To see how attributes "crlf" and "ident" are set for different paths.</p></div> | |
| <div class="olist arabic"><ol class="arabic"> | |
| <li> | |
| <p> | |
| Prepare a <code>struct attr_check</code> with two elements (because | |
| we are checking two attributes): | |
| </p> | |
| </li> | |
| </ol></div> | |
| <div class="listingblock"> | |
| <div class="content"> | |
| <pre><code>static struct attr_check *check; | |
| static void setup_check(void) | |
| { | |
| if (check) | |
| return; /* already done */ | |
| check = attr_check_initl("crlf", "ident", NULL); | |
| }</code></pre> | |
| </div></div> | |
| <div class="olist arabic"><ol class="arabic"> | |
| <li> | |
| <p> | |
| Call <code>git_check_attr()</code> with the prepared <code>struct attr_check</code>: | |
| </p> | |
| </li> | |
| </ol></div> | |
| <div class="listingblock"> | |
| <div class="content"> | |
| <pre><code> const char *path; | |
| setup_check(); | |
| git_check_attr(path, check);</code></pre> | |
| </div></div> | |
| <div class="olist arabic"><ol class="arabic"> | |
| <li> | |
| <p> | |
| Act on <code>.value</code> member of the result, left in <code>check->items[]</code>: | |
| </p> | |
| </li> | |
| </ol></div> | |
| <div class="listingblock"> | |
| <div class="content"> | |
| <pre><code> const char *value = check->items[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 neither 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 ...) { | |
| ... | |
| }</code></pre> | |
| </div></div> | |
| <div class="paragraph"><p>To see how attributes in argv[] are set for different paths, only | |
| the first step in the above would be different.</p></div> | |
| <div class="listingblock"> | |
| <div class="content"> | |
| <pre><code>static struct attr_check *check; | |
| static void setup_check(const char **argv) | |
| { | |
| check = attr_check_alloc(); | |
| while (*argv) { | |
| struct git_attr *attr = git_attr(*argv); | |
| attr_check_append(check, attr); | |
| argv++; | |
| } | |
| }</code></pre> | |
| </div></div> | |
| </div> | |
| </div> | |
| <div class="sect1"> | |
| <h2 id="_querying_all_attributes">Querying All Attributes</h2> | |
| <div class="sectionbody"> | |
| <div class="paragraph"><p>To get the values of all attributes associated with a file:</p></div> | |
| <div class="ulist"><ul> | |
| <li> | |
| <p> | |
| Prepare an empty <code>attr_check</code> structure by calling | |
| <code>attr_check_alloc()</code>. | |
| </p> | |
| </li> | |
| <li> | |
| <p> | |
| Call <code>git_all_attrs()</code>, which populates the <code>attr_check</code> | |
| with the attributes attached to the path. | |
| </p> | |
| </li> | |
| <li> | |
| <p> | |
| Iterate over the <code>attr_check.items[]</code> array to examine | |
| the attribute names and values. The name of the attribute | |
| described by an <code>attr_check.items[]</code> object can be retrieved via | |
| <code>git_attr_name(check->items[i].attr)</code>. (Please note that no items | |
| will be returned for unset attributes, so <code>ATTR_UNSET()</code> will return | |
| false for all returned <code>attr_check.items[]</code> objects.) | |
| </p> | |
| </li> | |
| <li> | |
| <p> | |
| Free the <code>attr_check</code> struct by calling <code>attr_check_free()</code>. | |
| </p> | |
| </li> | |
| </ul></div> | |
| </div> | |
| </div> | |
| </div> | |
| <div id="footnotes"><hr /></div> | |
| <div id="footer"> | |
| <div id="footer-text"> | |
| Last updated | |
| 2018-07-18 13:16:04 PDT | |
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