diff options
Diffstat (limited to 'lib/stdlib/doc/src/io_lib.xml')
| -rw-r--r-- | lib/stdlib/doc/src/io_lib.xml | 103 |
1 files changed, 69 insertions, 34 deletions
diff --git a/lib/stdlib/doc/src/io_lib.xml b/lib/stdlib/doc/src/io_lib.xml index bc1d77ac83..4d527f8ed3 100644 --- a/lib/stdlib/doc/src/io_lib.xml +++ b/lib/stdlib/doc/src/io_lib.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1996</year><year>2017</year> + <year>1996</year><year>2018</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -28,7 +28,7 @@ <date></date> <rev></rev> </header> - <module>io_lib</module> + <module since="">io_lib</module> <modulesummary>I/O library functions.</modulesummary> <description> <p>This module contains functions for converting to and from @@ -52,6 +52,9 @@ </desc> </datatype> <datatype> + <name name="chars_limit"/> + </datatype> + <datatype> <name name="depth"/> </datatype> <datatype> @@ -96,7 +99,7 @@ <funcs> <func> - <name name="build_text" arity="1"/> + <name name="build_text" arity="1" since="OTP 18.0"/> <fsummary>Build the output text for a preparsed format list.</fsummary> <desc> <p>For details, see @@ -105,7 +108,7 @@ </func> <func> - <name name="char_list" arity="1"/> + <name name="char_list" arity="1" since=""/> <fsummary>Test for a list of characters.</fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of @@ -114,7 +117,7 @@ </func> <func> - <name name="deep_char_list" arity="1"/> + <name name="deep_char_list" arity="1" since=""/> <fsummary>Test for a deep list of characters.</fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a, possibly deep, @@ -123,7 +126,7 @@ </func> <func> - <name name="deep_latin1_char_list" arity="1"/> + <name name="deep_latin1_char_list" arity="1" since="OTP R16B"/> <fsummary>Test for a deep list of characters.</fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a, possibly deep, @@ -133,8 +136,8 @@ </func> <func> - <name name="format" arity="2"/> - <name name="fwrite" arity="2"/> + <name name="format" arity="2" since=""/> + <name name="fwrite" arity="2" since=""/> <fsummary>Write formatted output.</fsummary> <desc> <p>Returns a character list that represents <c><anno>Data</anno></c> @@ -153,7 +156,32 @@ </func> <func> - <name name="fread" arity="2"/> + <name name="format" arity="3" since="OTP 21.0"/> + <name name="fwrite" arity="3" since="OTP 21.0"/> + <fsummary>Write formatted output.</fsummary> + <desc> + <p>Returns a character list that represents <c><anno>Data</anno></c> + formatted in accordance with <c><anno>Format</anno></c> in + the same way as + <seealso marker="#fwrite/2"><c>fwrite/2</c></seealso> and + <seealso marker="#format/2"><c>format/2</c></seealso>, + but takes an extra argument, a list of options.</p> + <p>Valid option:</p> + <taglist> + <tag><c>{chars_limit, <anno>CharsLimit</anno>}</c></tag> + <item> + <p>A soft limit on the number of characters returned. + When the number of characters is reached, remaining + structures are replaced by "<c>...</c>". + <c><anno>CharsLimit</anno></c> defaults to -1, which + means no limit on the number of characters returned.</p> + </item> + </taglist> + </desc> + </func> + + <func> + <name name="fread" arity="2" since=""/> <fsummary>Read formatted input.</fsummary> <desc> <p>Tries to read <c><anno>String</anno></c> in accordance with the @@ -194,7 +222,7 @@ </func> <func> - <name name="fread" arity="3"/> + <name name="fread" arity="3" since=""/> <fsummary>Re-entrant formatted reader</fsummary> <desc> <p>This is the re-entrant formatted reader. The continuation of @@ -240,7 +268,7 @@ </func> <func> - <name name="indentation" arity="2"/> + <name name="indentation" arity="2" since=""/> <fsummary>Indentation after printing string.</fsummary> <desc> <p>Returns the indentation if <c><anno>String</anno></c> has been @@ -249,7 +277,7 @@ </func> <func> - <name name="latin1_char_list" arity="1"/> + <name name="latin1_char_list" arity="1" since="OTP R16B"/> <fsummary>Test for a list of ISO Latin-1 characters.</fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of @@ -258,7 +286,7 @@ </func> <func> - <name name="nl" arity="0"/> + <name name="nl" arity="0" since=""/> <fsummary>Write a newline.</fsummary> <desc> <p>Returns a character list that represents a new line character.</p> @@ -266,8 +294,8 @@ </func> <func> - <name name="print" arity="1"/> - <name name="print" arity="4"/> + <name name="print" arity="1" since=""/> + <name name="print" arity="4" since=""/> <fsummary>Pretty print a term.</fsummary> <desc> <p>Returns a list of characters that represents @@ -287,7 +315,7 @@ </func> <func> - <name name="printable_latin1_list" arity="1"/> + <name name="printable_latin1_list" arity="1" since="OTP R16B"/> <fsummary>Test for a list of printable ISO Latin-1 characters.</fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of @@ -296,7 +324,7 @@ </func> <func> - <name name="printable_list" arity="1"/> + <name name="printable_list" arity="1" since=""/> <fsummary>Test for a list of printable characters.</fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of @@ -310,7 +338,7 @@ </func> <func> - <name name="printable_unicode_list" arity="1"/> + <name name="printable_unicode_list" arity="1" since="OTP R16B"/> <fsummary>Test for a list of printable Unicode characters.</fsummary> <desc> <p>Returns <c>true</c> if <c><anno>Term</anno></c> is a flat list of @@ -319,7 +347,7 @@ </func> <func> - <name name="scan_format" arity="2"/> + <name name="scan_format" arity="2" since="OTP 18.0"/> <fsummary>Parse all control sequences in the format string.</fsummary> <desc> <p>Returns a list corresponding to the specified format string, @@ -345,7 +373,7 @@ </func> <func> - <name name="unscan_format" arity="1"/> + <name name="unscan_format" arity="1" since="OTP 18.0"/> <fsummary>Revert a preparsed format list to a plain character list and a list of arguments.</fsummary> <desc> @@ -355,28 +383,35 @@ </func> <func> - <name name="write" arity="1"/> - <name name="write" arity="2" clause_i="1"/> - <name name="write" arity="2" clause_i="2"/> + <name name="write" arity="1" since=""/> + <name name="write" arity="2" clause_i="1" since=""/> + <name name="write" arity="2" clause_i="2" since="OTP 20.0"/> <fsummary>Write a term.</fsummary> <desc> <p>Returns a character list that represents <c><anno>Term</anno></c>. - Argument <c><anno>Depth</anno></c> controls the depth of the + Option <c><anno>Depth</anno></c> controls the depth of the structures written. When the specified depth is reached, everything below this level is replaced by "<c>...</c>". <c><anno>Depth</anno></c> defaults to -1, which means - no limitation.</p> + no limitation. Option <c><anno>CharsLimit</anno></c> puts a + soft limit on the number of characters returned. When the + number of characters is reached, remaining structures are + replaced by "<c>...</c>". <c><anno>CharsLimit</anno></c> + defaults to -1, which means no limit on the number of + characters returned.</p> <p><em>Example:</em></p> <pre> 1> <input>lists:flatten(io_lib:write({1,[2],[3],[4,5],6,7,8,9})).</input> "{1,[2],[3],[4,5],6,7,8,9}" 2> <input>lists:flatten(io_lib:write({1,[2],[3],[4,5],6,7,8,9}, 5)).</input> -"{1,[2],[3],[...],...}"</pre> +"{1,[2],[3],[...],...}" +3> <input>lists:flatten(io_lib:write({[1,2,3],[4,5],6,7,8,9}, [{chars_limit,20}])).</input> +"{[1,2|...],[4|...],...}"</pre> </desc> </func> <func> - <name name="write_atom" arity="1"/> + <name name="write_atom" arity="1" since=""/> <fsummary>Write an atom.</fsummary> <desc> <p>Returns the list of characters needed to print atom @@ -385,7 +420,7 @@ </func> <func> - <name name="write_atom_as_latin1" arity="1"/> + <name name="write_atom_as_latin1" arity="1" since="OTP 20.0"/> <fsummary>Write an atom.</fsummary> <desc> <p>Returns the list of characters needed to print atom @@ -395,7 +430,7 @@ </func> <func> - <name name="write_char" arity="1"/> + <name name="write_char" arity="1" since=""/> <fsummary>Write a character.</fsummary> <desc> <p>Returns the list of characters needed to print a character @@ -404,7 +439,7 @@ </func> <func> - <name name="write_char_as_latin1" arity="1"/> + <name name="write_char_as_latin1" arity="1" since="OTP R16B"/> <fsummary>Write a character.</fsummary> <desc> <p>Returns the list of characters needed to print a character @@ -414,7 +449,7 @@ </func> <func> - <name name="write_latin1_char" arity="1"/> + <name name="write_latin1_char" arity="1" since="OTP R16B"/> <fsummary>Write an ISO Latin-1 character.</fsummary> <desc> <p>Returns the list of characters needed to print a character @@ -423,7 +458,7 @@ </func> <func> - <name name="write_latin1_string" arity="1"/> + <name name="write_latin1_string" arity="1" since="OTP R16B"/> <fsummary>Write an ISO Latin-1 string.</fsummary> <desc> <p>Returns the list of characters needed to print @@ -432,7 +467,7 @@ </func> <func> - <name name="write_string" arity="1"/> + <name name="write_string" arity="1" since=""/> <fsummary>Write a string.</fsummary> <desc> <p>Returns the list of characters needed to print @@ -441,7 +476,7 @@ </func> <func> - <name name="write_string_as_latin1" arity="1"/> + <name name="write_string_as_latin1" arity="1" since="OTP R16B"/> <fsummary>Write a string.</fsummary> <desc> <p>Returns the list of characters needed to print |