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[20210810]完善vim bccalc_win插件.txt
--//前一段时间改写vim bccalc_win插件，发现使用16x计算取模时存在问题，计算错误。
--//建议不采用bc -l模式计算，采用bc模式计算.
--//测试如下:
10210a5e = 270600798
270600798 % 131072 %7+1 = 4 ===> 使用bc计算 c0
10210a5e % 20000 % 7 +1 = 0x4 ===> 使用bc计算 16x
--//以下计算错误:
10210a5e % 20000 % 7 +1 = 0x1 ===> 使用bc -l计算 16x
270600798 % 131072 %7+1 = 1 ===> 使用bc -l计算 cc
10210a5e % 20000 % 7 +1 = 1 ===> 使用bc -l计算 10
--//顺便加入更多的注解，避免以后自己都读不懂源代码。在读代码时，我还发现源作者有一个插入模式计算方式,
--//实际上以前blog的上也有说明：
inoremap =: = <Esc>"eyy:call CalcLines(0)<CR>a
--//在输入表达式时输入=:就可以知道结果，当然输入要快。例子:"
12*4.2= 50.4
--//如果无法计算，显示如下，这种模式自己不太喜欢，仅仅加入=- (10to16,16to10的转换)，其他不作扩展了。
123123a= (standard_in) 1: parse error
--//如果输入太慢就是如下,另外注意set paste问题，这样在插入模式无效。
12*4.2=:
--//另外为了代码的通用性修改加入如下：
if has("windows")
let str = substitute (str, '^', '^^^^', "g")
endif
--//windows的命令行有一些变态，必须输入4个^才表示1个^.
D:>echo 2^5 | bc
25
D:>echo 2^^^^5 | bc
32
--//另外取消了提示行显示结果的需求，结果直接输出并且自动判断是否在结尾输入=.没有输入自动补上,整个改动有点大。
" append answer or echo
if has_equal == 1
exec "normal a " . answer
else
exec "normal a " . "= " . answer
"" echo "answer = " . answer
endif
--//源代码如下,bc.exe可执行程序自己要另行安装,一般我选择unxutils包.另外我测试仅仅<Leader>开头的命令。
$ cat vim bccalc_win.vim
"" calculate expression entered on command line and give answer, e.g.:
"" :Calculate sin (3) + sin (4) ^ 2
command! -nargs=+ Calculate echo "<args> = " . Calculate ("<args>",0)
"" calculate expression from selection using bc -l, pick a mapping, or use the Leader form
vnoremap ;bc "ey`>:call CalcLines(0)<CR>
vnoremap ;bb "ey`>:call CalcLines(0)<CR>
"" convert hexdecimal to decimal
vnoremap ;10 "ey`>:call CalcLines(10)<CR>
"" convert hexdecimal to decimal
vnoremap ;16 "ey`>:call CalcLines(16)<CR>
"" computer hexdecimal to hexdecimal
vnoremap ;16x "ey`>:call CalcLines(1016)<CR>
"" split event P1 to TYPE and MODE
vnoremap ;tx "ey`>:call CalcLines(1616)<CR>
"" split dba(10) or dba(16) to file# and block#
vnoremap ;22 "ey`>:call CalcLines(22)<CR>
vnoremap ;dba "ey`>:call CalcLines(22)<CR>
"" split scn(10) or scn(16) into scn_wrap,scn_base
vnoremap ;32 "ey`>:call CalcLines(32)<CR>
vnoremap ;scn "ey`>:call CalcLines(32)<CR>
"" convert scn_wrap,scn_base(10) or scn_wrap,scn_base(16) to 10 or 16 base
vnoremap ;ss "ey`>:call CalcLines(10016)<CR>
"" convert file#,block# dba(10) or file#,block# dba(16) to 10 or 16 base
vnoremap ;rr "ey`>:call CalcLines(20016)<CR>
"" convert hexdecimal to decimal or decimal to hexdecimal
vnoremap ;hd "ey`>:call CalcLines(30016)<CR>
vnoremap ;hh "ey`>:call CalcLines(30016)<CR>
vnoremap ;dh "ey`>:call CalcLines(30016)<CR>
"" --------------------------------------------------------------------
"" calculate expression on current line using bc -l, pick a mapping, or use the Leader
nnoremap <Leader>bx <Esc>"eyy$:call CalcLines(0)<CR>
nnoremap <Leader>bc <Esc>"eyy$:call CalcLines(0)<CR>
nnoremap <Leader>bb <Esc>"eyy$:call CalcLines(0)<CR>
noremap <Leader>cc Yp!!bc -lq| tr -d 'n\r' | sed -e "s/.([0-9]*[1-9])0+$/.1/" -e "s/.0+$//"<CR>kA = <ESC>J
"" calculate expression on current line using bc , pick a mapping, or use the Leader
noremap <Leader>c0 Yp!!bc -q| tr -d 'n\r' | sed -e "s/.([0-9]*[1-9])0+$/.1/" -e "s/.0+$//"<CR>kA = <ESC>J
"" calculate expression on current line ( delete ,) using bc -l, pick a mapping, or use the Leader
noremap <Leader>c, Yp!!sed "s/,//g" |bc -lq| tr -d 'n\r' | sed -e "s/.([0-9]*[1-9])0+$/.1/" -e "s/.0+$//"<CR>kA = <ESC>J
"" convert hexdecimal to decimal
nnoremap <Leader>10 <Esc>"eyy$:call CalcLines(10)<CR>
"" convert decimal to hexdecimal
nnoremap <Leader>16 <Esc>"eyy$:call CalcLines(16)<CR>
"" computer hexdecimal to hexdecimal
nnoremap <Leader>16x <Esc>"eyy$:call CalcLines(1016)<CR>
"" split event P1 to TYPE and MODE
nnoremap <Leader>tx <Esc>"eyy$:call CalcLines(1616)<CR>
"" split dba(10) or dba(16) to file# and block#
nnoremap <Leader>22 <Esc>"eyy$:call CalcLines(22)<CR>
nnoremap <Leader>dba <Esc>"eyy$:call CalcLines(22)<CR>
"" split scn(10) or scn(16) into scn_wrap,scn_base
nnoremap <Leader>32 <Esc>"eyy$:call CalcLines(32)<CR>
nnoremap <Leader>scn <Esc>"eyy$:call CalcLines(32)<CR>
"" convert scn_wrap,scn_base(10) or scn_wrap,scn_base(16) to 10 or 16 base
nnoremap <Leader>ss <Esc>"eyy$:call CalcLines(10016)<CR>
"" convert file#,block# dba(10) or file#,block# dba(16) to 10 or 16 base
nnoremap <Leader>rr <Esc>"eyy$:call CalcLines(20016)<CR>
"" convert hexdecimal to decimal or decimal to hexdecimal
nnoremap <Leader>hd <Esc>"eyy$:call CalcLines(30016)<CR>
nnoremap <Leader>hh <Esc>"eyy$:call CalcLines(30016)<CR>
nnoremap <Leader>dh <Esc>"eyy$:call CalcLines(30016)<CR>
"" --------------------------------------------------------------------
"" calculate from insertmode
inoremap =: =<Esc>"eyy$:call CalcLines(0)<CR>a
inoremap =- =<Esc>"eyy$:call CalcLines(30016)<CR>a
"" --------------------------------------------------------------------
"" Calculate:
"" clean up an expression, pass it to bc, return answer
function! Calculate (s,flag)
let has_hex = 0
let str = a:s
" remove newlines and trailing spaces
let str = substitute (str, "n", "", "g")
let str = substitute (str, 's*$', "", "g")
" sub common func names for bc equivalent
let str = substitute (str, 'csins*(', 's (', 'g')
let str = substitute (str, 'ccoss*(', 'c (', 'g')
let str = substitute (str, 'catans*(', 'a (', 'g')
let str = substitute (str, "clns*(", 'l (', 'g')
let str = substitute (str, 'clogs*(', 'l (', 'g')
let str = substitute (str, 'cexps*(', 'e (', 'g')
" alternate exponitiation symbols
let str = substitute (str, '**', '^', "g")
let str = substitute (str, '`', '^', "g")
if has("windows")
let str = substitute (str, '^', '^^^^', "g")
endif
" escape chars for shell
if has("unix")
let str = escape (str, '*();&><|^')
endif
let preload = exists ("g:bccalc_preload") ? g:bccalc_preload : ""
" run bc
" return str
" let answer = system ("echo " . str . " | bc -l " . preload)
if a:flag == 0
let answer = system ("echo " . str . " | bc -l " . preload)
" let answer = answer . " --- ". str
endif
if a:flag == 10
let str = toupper (str)
let str = substitute (str, "0x", "", "g")
let answer = system ("echo ibase=16 ;" . str . " | bc -l " . preload)
endif
if a:flag == 16
let answer = system ("echo obase=16 ;" . str . " | bc -l " . preload)
let answer = "0x" . tolower ( answer )
endif
if a:flag == 1016
let str = toupper (str)
let str = substitute (str, "0x", "", "g")
let answer = system ("echo obase=16 ;ibase =16;" . str . " | bc " . preload)
let answer = "0x" . tolower ( answer )
endif
let has_hex = Check_hex(str)
if a:flag == 1616
if has_hex == 1
let str = toupper (str)
let str = substitute (str, "0x", "", "g")
" 0x10000 hexdecimal = 65536 (10) = 2^16(10)
let answer = system ("echo ibase=16 ;" . str . "/10000" . " | bc " . preload)
let answer1 = system ("echo ibase=16 ;" . str . "%10000" . " | bc " . preload)
let answer2 = system ("echo ibase=16 ;" . str . " | bc -l " . preload)
else
let answer = system ("echo " . str . "/65536" . " | bc " . preload)
let answer1 = system ("echo " . str . "%65536" . " | bc " . preload)
let answer2 = "0x" . system ("echo obase=16 ;" . str . " | bc -l " . preload)
endif
let answer = "/2^16 %2^16 (Type | Mode) = " . answer . "," . answer1 ." = " . tolower(answer2)
endif
if a:flag == 22
if has_hex == 1
let str = toupper (str)
let str = substitute (str, "0x", "", "g")
" 0x400000 hexdecimal = 4194304 (10) = 2^22(10)
let answer = system ("echo ibase=16 ;" . str . "/400000" . " | bc " . preload)
let answer1 = system ("echo ibase=16 ;" . str . "%400000" . " | bc " . preload)
let answer2 = system ("echo ibase=16 ;" . str . " | bc -l " . preload)
else
let answer = system ("echo " . str . "/4194304" . " | bc " . preload)
let answer1 = system ("echo " . str . "%4194304" . " | bc " . preload)
let answer2 = "0x" . system ("echo obase=16 ;" . str . " | bc -l " . preload)
endif
" let answer = "set dba " . answer . "," . answer1
let answer = "set dba " . answer . "," . answer1 ." = alter system dump datafile " . answer . " block " . answer1 ." = " . tolower(answer2)
endif
if a:flag == 32
if has_hex == 1
let str = toupper (str)
let str = substitute (str, "0x", "", "g")
" 0x100000000 hexdecimal = 4294967296(10) = 2^32(10)
let answer = system ("echo ibase=16 ;" . str . "/100000000" . " | bc " . preload)
let answer1 = system ("echo ibase=16 ;" . str . "%100000000" . " | bc " . preload)
let answer2 = system ("echo obase=16 ;ibase=16 ;" . str . "/100000000" . " | bc " . preload)
let answer3 = system ("echo obase=16 ;ibase=16 ;" . str . "%100000000" . " | bc " . preload)
else
let answer = system ("echo " . str . "/4294967296" . " | bc " . preload)
let answer1 = system ("echo " . str . "%4294967296" . " | bc " . preload)
let answer2 = system ("echo obase=16 ;" . str . "/4294967296" . " | bc " . preload)
let answer3 = system ("echo obase=16 ;" . str . "%4294967296" . " | bc " . preload)
endif
let answer = "scn_wrap,scn_base(10): " . answer . "," . answer1 . " = scn_wrap,scn_base(16): " . "0x" . tolower (answer2) . "," . "0x" . tolower(answer3)
endif
if a:flag == 10016
if has_hex == 1
let str = toupper (str)
let str = substitute (str, "0x", "", "g")
" 0x100000000 hexdecimal = 4294967296(10) = 2^32(10)
let str = substitute (str, "[,.]", "*100000000+", "g")
let answer = system ("echo obase=10 ;ibase=16 ;" . str . " | bc -l " . preload)
let answer1 = system ("echo obase=16 ;ibase=16 ;" . str . " | bc -l " . preload)
else
let str = substitute (str, "[,.]", "*4294967296+", "g")
let answer = system ("echo " . str . " | bc -l " . preload)
let answer1 = system ("echo obase=16 ;" . str . " | bc -l " . preload)
endif
let answer = "scn(10): " . answer . " = scn(16): " . "0x" . tolower (answer1)
endif
if a:flag == 20016
if has_hex == 1
let str = toupper ( str )
let str = substitute (str, "0x", "", "g")
" 0x400000 hexdecimal = 4194304 (10) = 2^22(10)
let str = substitute (str, "[,.]", "*400000+", "g")
let answer = system ("echo obase=10 ;ibase=16 ;" . str . " | bc -l " . preload)
let answer1 = system ("echo obase=16 ;ibase=16 ;" . str . " | bc -l " . preload)
else
let str = substitute (str, "[,.]", "*4194304+", "g")
let answer = system ("echo " . str . " | bc -l " . preload)
let answer1 = system ("echo obase=16 ;" . str . " | bc -l " . preload)
endif
let answer = "file#,block# dba(10): " . answer . " = file#,block# dba(16): " . "0x" . tolower (answer1)
endif
if a:flag == 30016
if has_hex == 1
let str = substitute (str, "0x", "", "g")
let str = toupper ( str )
let answer = system ("echo ibase=16 ;" . str . " | bc -l " . preload)
else
let answer = system ("echo obase=16 ;" . str . " | bc -l " . preload)
let answer = "0x" . tolower ( answer )
endif
endif
" strip newline and
let answer = substitute (answer, "[\n]", "", "g")
" strip trailing 0s in decimals
let answer = substitute (answer, '.(d*[1-9])0+$', '.1', "")
let answer = substitute (answer, '.0+$', '', "")
return answer
endfunction
" ---------------------------------------------------------------------
" CalcLines:
"
" take expression from lines, either visually selected or the current line,
" pass to calculate function, echo or past answer after '='
function! CalcLines(flag)
let has_equal = 0
" remove newlines and trailing spaces
let @e = substitute (@e, "n", "", "g")
let @e = substitute (@e, 's*$', "", "g")
" if we end with an equal, strip, and remember for output
if @e =~ "=$"
let @e = substitute (@e, '=$', "", "")
let has_equal = 1
endif
" if there is another equal in the line, assume chained equations, remove leading ones
let @e = substitute (@e, '^.+=', '', '')
let answer = Calculate (@e,a:flag)
" append answer or echo
if has_equal == 1
exec "normal a " . answer
else
exec "normal a " . "= " . answer
"" echo "answer = " . answer
endif
endfunction
" ---------------------------------------------------------------------
" Check_hex:
"
" Check if the string contains 0x, a, b, c, d, e, f return has_hex=1
function! Check_hex(str)
let has_hex = 0
let ss = a:str
let ss = tolower ( ss )
if ss =~ "0x"
let has_hex = 1
return has_hex
endif
if ss =~ "[abcdef]"
let has_hex = 1
return has_hex
endif
endfunction
