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-rw-r--r--lib/stdlib/doc/src/filelib.xml54
1 files changed, 52 insertions, 2 deletions
diff --git a/lib/stdlib/doc/src/filelib.xml b/lib/stdlib/doc/src/filelib.xml
index 7c6380ce28..ad73fc254a 100644
--- a/lib/stdlib/doc/src/filelib.xml
+++ b/lib/stdlib/doc/src/filelib.xml
@@ -60,6 +60,12 @@
<datatype>
<name name="filename_all"/>
</datatype>
+ <datatype>
+ <name name="find_file_rule"/>
+ </datatype>
+ <datatype>
+ <name name="find_source_rule"/>
+ </datatype>
</datatypes>
<funcs>
@@ -226,7 +232,51 @@ filelib:wildcard("lib/**/*.{erl,hrl}")</code>
directory.</p>
</desc>
</func>
+
+ <func>
+ <name name="find_file" arity="2"/>
+ <name name="find_file" arity="3"/>
+ <fsummary>Find a file relative to a given directory.</fsummary>
+ <desc>
+ <p>Looks for a file of the given name by applying suffix rules to
+ the given directory path. For example, a rule <c>{"ebin", "src"}</c>
+ means that if the directory path ends with <c>"ebin"</c>, the
+ corresponding path ending in <c>"src"</c> should be searched.</p>
+ <p>If <c><anno>Rules</anno></c> is left out or is an empty list, the
+ default system rules are used. See also the Kernel application
+ parameter <seealso
+ marker="kernel:kernel_app#source_search_rules"><c>source_search_rules</c></seealso>.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="find_source" arity="1"/>
+ <fsummary>Find the source file for a given object file.</fsummary>
+ <desc>
+ <p>Equivalent to <c>find_source(Base, Dir)</c>, where <c>Dir</c> is
+ <c>filename:dirname(<anno>FilePath</anno>)</c> and <c>Base</c> is
+ <c>filename:basename(<anno>FilePath</anno>)</c>.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="find_source" arity="2"/>
+ <name name="find_source" arity="3"/>
+ <fsummary>Find a source file relative to a given directory.</fsummary>
+ <desc>
+ <p>Applies file extension specific rules to find the source file for
+ a given object file relative to the object directory. For example,
+ for a file with the extension <c>.beam</c>, the default rule is to
+ look for a file with a corresponding extension <c>.erl</c> by
+ replacing the suffix <c>"ebin"</c> of the object directory path with
+ <c>"src"</c>.
+ The file search is done through <seealso
+ marker="#find_file/3"><c>find_file/3</c></seealso>. The directory of
+ the object file is always tried before any other directory specified
+ by the rules.</p>
+ <p>If <c><anno>Rules</anno></c> is left out or is an empty list, the
+ default system rules are used. See also the Kernel application
+ parameter <seealso
+ marker="kernel:kernel_app#source_search_rules"><c>source_search_rules</c></seealso>.</p>
+ </desc>
+ </func>
</funcs>
</erlref>
-
-