@ -15,8 +15,9 @@ function util.stripePunctuations(text)
return text : gsub ( " \226 [ \128 - \131 ][ \128 - \191 ] " , ' ' ) : gsub ( " ^%p+ " , ' ' ) : gsub ( " %p+$ " , ' ' )
end
--- Splits a string by a pattern
--[[--
Splits a string by a pattern
Lua doesn ' t have a string.split() function and most of the time
you don ' t really need it because string.gmatch() is enough.
However string.gmatch ( ) has one significant disadvantage for me :
@ -24,9 +25,12 @@ You can't split a string while matching both the delimited
strings and the delimiters themselves without tracking positions
and substrings . The gsplit function below takes care of
this problem .
Author : Peter Odding
License : MIT / X11
Source : http : // snippets.luacode . org / snippets / String_splitting_130
Source : < a href = " http://snippets.luacode.org/snippets/String_splitting_130 " > http : // snippets.luacode . org / snippets / String_splitting_130 </ a >
] ]
----@string str string to split
----@param pattern the pattern to split against
@ -58,8 +62,11 @@ function util.gsplit(str, pattern, capture)
end )
end
--- Converts seconds to a clock string.
-- Source: https://gist.github.com/jesseadams/791673
--[[--
Converts seconds to a clock string .
Source : < a href = " https://gist.github.com/jesseadams/791673 " > https : // gist.github . com / jesseadams / 791673 </ a >
] ]
---- @int seconds number of seconds
---- @bool withoutSeconds if true 00:00, if false 00:00:00
---- @treturn string clock string in the form of 00:00 or 00:00:00
@ -91,16 +98,26 @@ function util.tableSize(T)
return count
end
-- append all elements from t2 into t1
--- Append all elements from t2 into t1.
---- @param t1 Lua table
---- @param t2 Lua table
function util . arrayAppend ( t1 , t2 )
for _ , v in ipairs ( t2 ) do
table.insert ( t1 , v )
end
end
-- Returns the index within this string of the last occurrence of the specified character
-- or -1 if the character does not occur.
-- To find . you need to escape it.
--[[--
Gets last index of string in character
Returns the index within this string of the last occurrence of the specified character
or - 1 if the character does not occur .
To find . you need to escape it .
] ]
---- @string string
---- @string ch
---- @treturn int last occurrence or -1 if not found
function util . lastIndexOf ( string , ch )
local i = string : match ( " .* " .. ch .. " () " )
if i == nil then return - 1 else return i - 1 end
@ -125,12 +142,16 @@ function util.splitToChars(text)
return tab
end
-- Tests whether c is a CJK character
--- Tests whether c is a CJK character
---- @string c
---- @treturn boolean true if CJK
function util . isCJKChar ( c )
return string.match ( c , " [ \228 - \234 ][ \128 - \191 ]. " ) == c
end
-- Test whether str contains CJK characters
--- Tests whether str contains CJK characters
---- @string str
---- @treturn boolean true if CJK
function util . hasCJKChar ( str )
return string.match ( str , " [ \228 - \234 ][ \128 - \191 ]. " ) ~= nil
end
@ -158,15 +179,15 @@ end
-- specific punctuation : e.g. "word :" or "word )"
-- (In french, there is a space before a colon, and it better
-- not be wrapped there.)
local non_split able_space_tailers = " :;,.!?)]}$%=-+*/|<>»” "
local non_split t able_space_tailers = " :;,.!?)]}$%=-+*/|<>»” "
-- Same if a space has some specific other punctuation before it
local non_split able_space_leaders = " ([{$=-+*/|<>«“ "
local non_split t able_space_leaders = " ([{$=-+*/|<>«“ "
-- Similar rules exist for CJK text. Taken from :
-- https://en.wikipedia.org/wiki/Line_breaking_rules_in_East_Asian_languages
local cjk_non_split able_tailers = table.concat ( {
local cjk_non_split t able_tailers = table.concat ( {
-- Simplified Chinese
" !%),.:;?]}¢°·’ \" †‡›℃∶、。〃〆〕〗〞﹚﹜！＂％＇），．：；？！］｝～ " ,
-- Traditional Chinese
@ -177,7 +198,7 @@ local cjk_non_splitable_tailers = table.concat( {
" !%),.:;?]}¢°’ \" †‡℃〆〈《「『〕！％），．：；？］｝ " ,
} )
local cjk_non_split able_leaders = table.concat ( {
local cjk_non_split t able_leaders = table.concat ( {
-- Simplified Chinese
" $(£¥·‘ \" 〈《「『【〔〖〝﹙﹛＄（．［｛￡￥ " ,
-- Traditional Chinese
@ -188,23 +209,27 @@ local cjk_non_splitable_leaders = table.concat( {
" $([{£¥‘ \" 々〇〉》」〔＄（［｛｠￥￦# " ,
} )
local cjk_non_split able = table.concat ( {
local cjk_non_split t able = table.concat ( {
-- Japanese
" —…‥〳〴〵 " ,
} )
-- Test whether a string could be separated by this char for multi-line rendering
-- - Test whether a string can be separated by this char for multi-line rendering.
-- Optional next or prev chars may be provided to help make the decision
function util . isSplitable ( c , next_c , prev_c )
---- @string c
---- @string next_c
---- @string prev_c
---- @treturn boolean true if splittable, false if not
function util . isSplittable ( c , next_c , prev_c )
if util.isCJKChar ( c ) then
-- a CJKChar is a word in itself, and so is splitable
if cjk_non_splitable : find ( c , 1 , true ) then
-- a CJKChar is a word in itself, and so is split t able
if cjk_non_split t able: find ( c , 1 , true ) then
-- except a few of them
return false
elseif next_c and cjk_non_split able_tailers: find ( next_c , 1 , true ) then
elseif next_c and cjk_non_split t able_tailers: find ( next_c , 1 , true ) then
-- but followed by a char that is not permitted at start of line
return false
elseif prev_c and cjk_non_split able_leaders: find ( prev_c , 1 , true ) then
elseif prev_c and cjk_non_split t able_leaders: find ( prev_c , 1 , true ) then
-- but preceded by a char that is not permitted at end of line
return false
else
@ -214,10 +239,10 @@ function util.isSplitable(c, next_c, prev_c)
elseif c == " " then
-- we only split on a space (so punctuation sticks to prev word)
-- if next_c or prev_c is provided, we can make a better decision
if next_c and non_split able_space_tailers: find ( next_c , 1 , true ) then
if next_c and non_split t able_space_tailers: find ( next_c , 1 , true ) then
-- this space is followed by some punctuation that is better kept with us
return false
elseif prev_c and non_split able_space_leaders: find ( prev_c , 1 , true ) then
elseif prev_c and non_split t able_space_leaders: find ( prev_c , 1 , true ) then
-- this space is lead by some punctuation that is better kept with us
return false
else
@ -225,13 +250,15 @@ function util.isSplitable(c, next_c, prev_c)
return true
end
end
-- otherwise, non split able
-- otherwise, non split t able
return false
end
--- Gets filesystem type of a path
-- Checks if the path occurs in /proc/mounts
----@string path an absolute path
--- Gets filesystem type of a path.
--
-- Checks if the path occurs in <code>/proc/mounts</code>
---- @string path an absolute path
---- @treturn string filesystem type
function util . getFilesystemType ( path )
local mounts = io.open ( " /proc/mounts " , " r " )
if not mounts then return nil end
@ -255,37 +282,55 @@ function util.getFilesystemType(path)
return type
end
--- Replaces characters that are invalid filenames.
--
-- Replaces the characters <code>\/:*?"<>|</code> with an <code>_</code>.
-- These characters are problematic on Windows filesystems. On Linux only
-- <code>/</code> poses a problem.
---- @string str filename
---- @treturn string sanitized filename
function util . replaceInvalidChars ( str )
if str then
return str : gsub ( ' [ \\ ,%/,:,%*,%?,%",%<,%>,%|] ' , ' _ ' )
end
end
--- Replaces slash with an underscore.
---- @string str
---- @treturn string
function util . replaceSlashChar ( str )
if str then
return str : gsub ( ' %/ ' , ' _ ' )
end
end
-- Split a file into its path and name
--- Splits a file into its path and name
---- @string file
---- @treturn string path, filename
function util . splitFilePathName ( file )
if file == nil or file == " " then return " " , " " end
if string.find ( file , " / " ) == nil then return " " , file end
return string.gsub ( file , " (.*/)(.*) " , " %1 " ) , string.gsub ( file , " .*/ " , " " )
end
-- Split a file name into its pure file name and suffix
--- Splits a file name into its pure file name and suffix
---- @string file
---- @treturn string path, extension
function util . splitFileNameSuffix ( file )
if file == nil or file == " " then return " " , " " end
if string.find ( file , " %. " ) == nil then return file , " " end
return string.gsub ( file , " (.*)%.(.*) " , " %1 " ) , string.gsub ( file , " .*%. " , " " )
end
--- Gets file extension
---- @string filename
---- @treturn string extension
function util . getFileNameSuffix ( file )
local _ , suffix = util.splitFileNameSuffix ( file )
return suffix
end
--- Adds > to touch menu items with a submenu
function util . getMenuText ( item )
local text
if item.text_func then
@ -299,8 +344,9 @@ function util.getMenuText(item)
return text
end
-- from http://notebook.kulchenko.com/programming/fixing-malformed-utf8-in-lua with modification
--- Replaces invalid UTF-8 characters with a replacement string.
--
-- Based on <a href="http://notebook.kulchenko.com/programming/fixing-malformed-utf8-in-lua">http://notebook.kulchenko.com/programming/fixing-malformed-utf8-in-lua</a>
---- @string str the string to be checked for invalid characters
---- @string replacement the string to replace invalid characters with
---- @treturn string valid UTF-8
Frans de Jonge
7 years ago
committed by
Qingping Hou