feat(lua): add iconv api

lua/spacevim/api/data/dict.lua

@@ -12,6 +12,7 @@ function M.pick(d, keys)
     return new_d
 end
 
+
 ---
 -- @function: 打印table的内容，递归
 -- @param: tbl 要打印的table
@@ -50,6 +51,7 @@ end
 
 
 
+
 return M
 
 

lua/spacevim/api/data/string.lua

@@ -1,3 +1,10 @@
+
+
+local str = {}
+
+
+function str.trim(str)
+=======
 --=============================================================================
 -- string.lua --- spacevim data#string api
 -- Copyright (c) 2016-2019 Wang Shidong & Contributors
@@ -11,10 +18,21 @@ local M = {}
 
 
 function M.trim(str)
+
     return str:match( "^%s*(.-)%s*$" )
 end
 
 
+
+function str.fill(str, length, ...)
+    if string.len(str) > length then
+    end
+    
+end
+
+
+return str
+=======
 function M.fill(str, length, ...)
     local v = ''
     if string.len(str) <= length then
@@ -99,5 +117,6 @@ end
 
 return M
 
+
 -- @todo add lua string api
 

lua/spacevim/api/iconv.lua

@@ -0,0 +1,140 @@
+local M = {}
+local has = require('spacevim').has
+local fn = require('spacevim').fn
+
+if has('iconv') == 1 and has('nvim') == 0 then
+    function M.iconv(str, from, to)
+        return fn.iconv(str, from, to)   
+    end
+else
+    function M.iconv(str, from, to)
+        return iconv.iconv(str, from, to, 'strict')   
+    end
+end
+
+function M.import()
+    return iconv
+end
+
+function M.iconv(expr, from, to, ...)
+    local argvs = ...
+    local errors = 'strict'
+    if argvs ~= nil then
+        errors = argvs[1]
+    end
+    return iconv.iconv(expr, from, to, errors)
+end
+
+
+
+
+
+function! SpaceVim#api#iconv#iconvb(expr, from, to, ...) abort
+  let errors = get(a:000, 0, 'strict')
+  try
+    return s:iconv.iconvb(a:expr, a:from, a:to, errors)
+  endtry
+endfunction
+
+let s:bytes = SpaceVim#api#iconv#bytes#import()
+
+let s:iconv = {}
+
+function! s:iconv.iconv(expr, from, to, errors) abort
+  return s:bytes.bytes2str(self.iconvb(a:expr, a:from, a:to, a:errors))
+endfunction
+
+function! s:iconv.iconvb(expr, from, to, errors) abort
+  let expr = s:bytes.tobytes(a:expr)
+  return self._iconv(expr, a:from, a:to, a:errors)
+endfunction
+
+function! s:iconv._iconv(expr, from, to, errors) abort
+  let from = tolower(a:from)
+  let to = tolower(a:to)
+
+  if !has_key(self.codecs, from)
+    throw printf('unknown encoding: %s', from)
+  endif
+
+  if !has_key(self.codecs, to)
+    throw printf('unknown encoding: %s', to)
+  endif
+
+  let decoder_module = call(self.codecs[from], [])
+  let encoder_module = call(self.codecs[to], [])
+
+  let decoder = decoder_module.Codec.new()
+  let encoder = encoder_module.Codec.new()
+
+  let u = decoder.decode(a:expr, a:errors)
+  let s = encoder.encode(u, a:errors)
+
+  return s
+endfunction
+
+let s:iconv.codecs = {
+      \ 'ascii': function('SpaceVim#api#iconv#codecs#ascii#import'),
+      \ 'utf-8': function('SpaceVim#api#iconv#codecs#utf8#import'),
+      \ 'utf-16': function('SpaceVim#api#iconv#codecs#utf16#import'),
+      \ 'utf-16be': function('SpaceVim#api#iconv#codecs#utf16be#import'),
+      \ 'utf-16le': function('SpaceVim#api#iconv#codecs#utf16le#import'),
+      \ 'utf-32': function('SpaceVim#api#iconv#codecs#utf32#import'),
+      \ 'utf-32be': function('SpaceVim#api#iconv#codecs#utf32be#import'),
+      \ 'utf-32le': function('SpaceVim#api#iconv#codecs#utf32le#import'),
+      \ 'latin1': function('SpaceVim#api#iconv#codecs#_8859_1#import'),
+      \ 'iso-8859-1': function('SpaceVim#api#iconv#codecs#_8859_1#import'),
+      \ 'iso-8859-2': function('SpaceVim#api#iconv#codecs#_8859_2#import'),
+      \ 'iso-8859-3': function('SpaceVim#api#iconv#codecs#_8859_3#import'),
+      \ 'iso-8859-4': function('SpaceVim#api#iconv#codecs#_8859_4#import'),
+      \ 'iso-8859-5': function('SpaceVim#api#iconv#codecs#_8859_5#import'),
+      \ 'iso-8859-6': function('SpaceVim#api#iconv#codecs#_8859_6#import'),
+      \ 'iso-8859-7': function('SpaceVim#api#iconv#codecs#_8859_7#import'),
+      \ 'iso-8859-8': function('SpaceVim#api#iconv#codecs#_8859_8#import'),
+      \ 'iso-8859-9': function('SpaceVim#api#iconv#codecs#_8859_9#import'),
+      \ 'iso-8859-10': function('SpaceVim#api#iconv#codecs#_8859_10#import'),
+      \ 'iso-8859-11': function('SpaceVim#api#iconv#codecs#_8859_11#import'),
+      \ 'iso-8859-13': function('SpaceVim#api#iconv#codecs#_8859_13#import'),
+      \ 'iso-8859-14': function('SpaceVim#api#iconv#codecs#_8859_14#import'),
+      \ 'iso-8859-15': function('SpaceVim#api#iconv#codecs#_8859_15#import'),
+      \ 'cp037': function('SpaceVim#api#iconv#codecs#_cp037#import'),
+      \ 'cp1026': function('SpaceVim#api#iconv#codecs#_cp1026#import'),
+      \ 'cp1250': function('SpaceVim#api#iconv#codecs#_cp1250#import'),
+      \ 'cp1251': function('SpaceVim#api#iconv#codecs#_cp1251#import'),
+      \ 'cp1252': function('SpaceVim#api#iconv#codecs#_cp1252#import'),
+      \ 'cp1253': function('SpaceVim#api#iconv#codecs#_cp1253#import'),
+      \ 'cp1254': function('SpaceVim#api#iconv#codecs#_cp1254#import'),
+      \ 'cp1255': function('SpaceVim#api#iconv#codecs#_cp1255#import'),
+      \ 'cp1256': function('SpaceVim#api#iconv#codecs#_cp1256#import'),
+      \ 'cp1257': function('SpaceVim#api#iconv#codecs#_cp1257#import'),
+      \ 'cp1258': function('SpaceVim#api#iconv#codecs#_cp1258#import'),
+      \ 'cp437': function('SpaceVim#api#iconv#codecs#_cp437#import'),
+      \ 'cp500': function('SpaceVim#api#iconv#codecs#_cp500#import'),
+      \ 'cp737': function('SpaceVim#api#iconv#codecs#_cp737#import'),
+      \ 'cp775': function('SpaceVim#api#iconv#codecs#_cp775#import'),
+      \ 'cp850': function('SpaceVim#api#iconv#codecs#_cp850#import'),
+      \ 'cp852': function('SpaceVim#api#iconv#codecs#_cp852#import'),
+      \ 'cp855': function('SpaceVim#api#iconv#codecs#_cp855#import'),
+      \ 'cp857': function('SpaceVim#api#iconv#codecs#_cp857#import'),
+      \ 'cp860': function('SpaceVim#api#iconv#codecs#_cp860#import'),
+      \ 'cp861': function('SpaceVim#api#iconv#codecs#_cp861#import'),
+      \ 'cp862': function('SpaceVim#api#iconv#codecs#_cp862#import'),
+      \ 'cp863': function('SpaceVim#api#iconv#codecs#_cp863#import'),
+      \ 'cp864': function('SpaceVim#api#iconv#codecs#_cp864#import'),
+      \ 'cp865': function('SpaceVim#api#iconv#codecs#_cp865#import'),
+      \ 'cp866': function('SpaceVim#api#iconv#codecs#_cp866#import'),
+      \ 'cp869': function('SpaceVim#api#iconv#codecs#_cp869#import'),
+      \ 'cp874': function('SpaceVim#api#iconv#codecs#_cp874#import'),
+      \ 'cp875': function('SpaceVim#api#iconv#codecs#_cp875#import'),
+      \ 'cp932': function('SpaceVim#api#iconv#codecs#_cp932#import'),
+      \ 'cp936': function('SpaceVim#api#iconv#codecs#_cp936#import'),
+      \ 'cp949': function('SpaceVim#api#iconv#codecs#_cp949#import'),
+      \ 'cp950': function('SpaceVim#api#iconv#codecs#_cp950#import'),
+      \ 'euc-jp': function('SpaceVim#api#iconv#codecs#_euc_jp#import'),
+      \ }
+
+function! SpaceVim#api#iconv#get() abort
+
+  return deepcopy(s:self)
+
+endfunction