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Diffstat (limited to 'lib/stdlib/doc/src/zip.xml')
| -rw-r--r-- | lib/stdlib/doc/src/zip.xml | 96 |
1 files changed, 78 insertions, 18 deletions
diff --git a/lib/stdlib/doc/src/zip.xml b/lib/stdlib/doc/src/zip.xml index e2ecfec8f0..4d98a20206 100644 --- a/lib/stdlib/doc/src/zip.xml +++ b/lib/stdlib/doc/src/zip.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>2006</year><year>2009</year> + <year>2006</year><year>2010</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -13,12 +13,12 @@ compliance with the License. You should have received a copy of the Erlang Public License along with this software. If not, it can be retrieved online at http://www.erlang.org/. - + Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. - + </legalnotice> <title>zip</title> @@ -42,16 +42,18 @@ <p>By convention, the name of a zip file should end in "<c>.zip</c>". To abide to the convention, you'll need to add "<c>.zip</c>" yourself to the name.</p> - <p>Zip archives are created with the - <seealso marker="#zip_2">zip/2</seealso> or the + <p>Zip archives are created with the + <seealso marker="#zip_2">zip/2</seealso> or the <seealso marker="#zip_2">zip/3</seealso> function. (They are also available as <c>create</c>, to resemble the <c>erl_tar</c> module.)</p> - <p>To extract files from a zip archive, use the - <seealso marker="#unzip_1">unzip/1</seealso> or the + <p>To extract files from a zip archive, use the + <seealso marker="#unzip_1">unzip/1</seealso> or the <seealso marker="#unzip_2">unzip/2</seealso> function. (They are also available as <c>extract</c>.)</p> - <p>To return a list of the files in a zip archive, use the + <p>To fold a function over all files in a zip archive, use the + <seealso marker="#foldl_3">foldl_3</seealso>.</p> + <p>To return a list of the files in a zip archive, use the <seealso marker="#list_dir_1">list_dir/1</seealso> or the <seealso marker="#list_dir_2">list_dir/2</seealso> function. (They are also available as <c>table</c>.)</p> @@ -132,7 +134,7 @@ zip_file() </code> <type> <v>Name = filename()</v> <v>FileList = [FileSpec]</v> - <v>FileSpec = filename() | {filename(), binary()}</v> + <v>FileSpec = filename() | {filename(), binary()} | {filename(), binary(), #file_info{}}</v> <v>Options = [Option]</v> <v>Option = memory | cooked | verbose | {comment, Comment} | {cwd, CWD} | {compress, What} | {uncompress, What}</v> <v>What = all | [Extension] | {add, [Extension]} | {del, [Extension]}</v> @@ -212,16 +214,16 @@ zip_file() </code> <taglist> <tag><c>all</c></tag> <item><p> means that all files will be compressed (as long - as they pass the <c>uncompress</c> condition).</p></item> + as they pass the <c>uncompress</c> condition).</p></item> <tag><c>[Extension]</c></tag> <item><p>means that only files with exactly these extensions - will be compressed.</p></item> + will be compressed.</p></item> <tag><c>{add,[Extension]}</c></tag> <item><p>adds these extensions to the list of compress - extensions.</p></item> + extensions.</p></item> <tag><c>{del,[Extension]}</c></tag> <item><p>deletes these extensions from the list of compress - extensions.</p></item> + extensions.</p></item> </taglist> </item> <tag><c>{uncompress, What}</c></tag> @@ -231,16 +233,16 @@ zip_file() </code> The following values of <c>What</c> are allowed:</p> <taglist> <tag><c>all</c></tag> - <item><p> means that no files will be compressed.</p></item> + <item><p> means that no files will be compressed.</p></item> <tag><c>[Extension]</c></tag> <item><p>means that files with these extensions will be - uncompressed.</p></item> + uncompressed.</p></item> <tag><c>{add,[Extension]}</c></tag> <item><p>adds these extensions to the list of uncompress - extensions.</p></item> + extensions.</p></item> <tag><c>{del,[Extension]}</c></tag> <item><p>deletes these extensions from the list of uncompress - extensions.</p></item> + extensions.</p></item> </taglist> </item> </taglist> @@ -283,7 +285,7 @@ zip_file() </code> the <c>unzip/2</c> function will only extract the files whose names are included in <c>FileList</c>. The full paths, including the names of all sub directories within - the zip archive, must be specified.</p> + the zip archive, must be specified.</p> </item> <tag><c>cooked</c></tag> <item> @@ -327,6 +329,64 @@ zip_file() </code> </desc> </func> <func> + <name>foldl(Fun, Acc0, Archive) -> {ok, Acc1} | {error, Reason}</name> + <fsummary>Fold a function over all files in a zip archive</fsummary> + <type> + <v>Fun = fun(FileInArchive, GetInfo, GetBin, AccIn) -> AccOut</v> + <v>FileInArchive = filename()</v> + <v>GetInfo = fun() -> #file_info{}</v> + <v>GetBin = fun() -> binary()</v> + <v>Acc0 = Acc1 = AccIn = AccOut = term()</v> + <v>Archive = filename() | {filename(), binary()}</v> + </type> + <desc> + <p>The <marker id="foldl_3"></marker> <c>foldl/3</c> function + calls <c>Fun(FileInArchive, GetInfo, GetBin, AccIn)</c> on + successive files in the <c>Archive</c>, starting with <c>AccIn + == Acc0</c>. <c>FileInArchive</c> is the name that the file + has in the archive. <c>GetInfo</c> is a fun that returns info + about the the file. <c>GetBin</c> returns the contents of the + file. Both <c>GetInfo</c> and <c>GetBin</c> must be called + within the <c>Fun</c>. Their behavior is undefined if they are + called outside the context of the <c>Fun</c>. The <c>Fun</c> + must return a new accumulator which is passed to the next + call. <c>foldl/3</c> returns the final value of the + accumulator. <c>Acc0</c> is returned if the archive is + empty. It is not necessary to iterate over all files in the + archive. The iteration may be ended prematurely in a + controlled manner by throwing an exception.</p> + + <p>For example:</p> + <pre> +> <input>Name = "dummy.zip".</input> +"dummy.zip" +> <input>{ok, {Name, Bin}} = zip:create(Name, [{"foo", <<"FOO">>}, {"bar", <<"BAR">>}], [memory]).</input> +{ok,{"dummy.zip", + <<80,75,3,4,20,0,0,0,0,0,74,152,97,60,171,39,212,26,3,0, + 0,0,3,0,0,...>>}} +> <input>{ok, FileSpec} = zip:foldl(fun(N, I, B, Acc) -> [{N, B(), I()} | Acc] end, [], {Name, Bin}).</input> +{ok,[{"bar",<<"BAR">>, + {file_info,3,regular,read_write, + {{2010,3,1},{19,2,10}}, + {{2010,3,1},{19,2,10}}, + {{2010,3,1},{19,2,10}}, + 54,1,0,0,0,0,0}}, + {"foo",<<"FOO">>, + {file_info,3,regular,read_write, + {{2010,3,1},{19,2,10}}, + {{2010,3,1},{19,2,10}}, + {{2010,3,1},{19,2,10}}, + 54,1,0,0,0,0,0}}]} +> <input>{ok, {Name, Bin}} = zip:create(Name, lists:reverse(FileSpec), [memory]).</input> +{ok,{"dummy.zip", + <<80,75,3,4,20,0,0,0,0,0,74,152,97,60,171,39,212,26,3,0, + 0,0,3,0,0,...>>}} +> <input>catch zip:foldl(fun("foo", _, B, _) -> throw(B()); (_, _, _, Acc) -> Acc end, [], {Name, Bin}). </input> +<<"FOO">> +</pre> + </desc> + </func> + <func> <name>list_dir(Archive) -> RetValue</name> <name>list_dir(Archive, Options)</name> <name>table(Archive) -> RetValue</name> |