[20240514]建立完善vim bccalc_win.vim插件.txt

[20240514]建立完善vim bccalc_win.vim插件.txt --//最近几天一直在使用vim bccalc_win.vim做运算,这是根据vim.org网站的一个调用bc做计算的一个插件bccalc.vim改写的, --//当时主要目的作为oracle一些计算的辅助工具,后来自己越写越复杂,在这次使用中还是遇到一些问题. 1.取模运算问题: --//实际上这个问题以前也遇到过. 12%10 = 0                     --//按\bc 4%3 = .00000000000000000001   --//按\bc. --//实际这个快捷调用bc -l,使用库函数,scale=20.导致计算不对,实际上使用\b0 快捷就可以了.(scale=0) 12%10 = 2                     --//按\b0 4%3 = 1                       --//按\b0   --//当我写成如下执行时: scale=0; 4%3 = .00000000000000000001  --//按\bc. --//问题再现,我看了源代码,存在如下内容: function! CalcLines(flag) ....     " if there is another equal in the line, assume chained equations, remove leading ones"     let @e = substitute (@e, '^.\+=', '', '') --//如果中间存在=字符,移除前面的字符,这样如下代码执行错误. --// scale=0; 4%3 过滤后变成 0; 4%3,再执行计算,注调试可以使用register e查看寄存器内容. 0; 4%3  = 0.00000000000000000001  --//按\bc. D:\notes>echo 0; 4%3|bc -l 0 .00000000000000000001 --//注解这行就ok了.我感觉也许选择注解更加科学一些. --//例子: a=3.1;b=2.1;a+b = 5.2  --// 按\bc,如果按照以前的代码这样变成 a=3.1;b=2.1;a+b = 2.1  --// 因为这样字符串变成 2.1;a+b ,计算后变成: D:\notes>echo 2.1;a+b | bc -l 2.1 0 --//脚本的输出过滤掉\n以及最后的0字符,导致结果变成了2.1.明显不对.注解后这个问题就不存在了. --//我还增加<leader>b0 调用bc的功能不带-l参数,这样整形运算取模就不会再有问题 4%3 = 1   --//按\b0 2.其他改进: --//再次花了一点时间重读源代码,对一些命令进行了整理,取消了原来外部调用!!bc相关命令. --//注解掉<leader>cc, <leader>c0  <leader>c,这些代码,不再使用!!这样执行模式调用bc,实际上这个是自己最早自用的版本. --//可以使用<leader>bc代替支持多行,有一个小缺点,就是每行结尾像c语言一样写分号. --//增加<leader>b,支持过滤掉字符串里面的,再运算. --//不管select,visual,normal任何模式全部统一使用<leader>前缀,这样方便操作以及记忆. --//我记得以前改写过可以实现16进制到16进制计算,快捷给忘了,检查发现我定义为<leader>16x,要按4个键,再增加一个定义 --//<leader>hh,表示hex->hex的意思,取消原来<leader>hh的定义. --//注:使用<leader>hh,里面输入即使没有0x也是当作16进制数字,例子: 0x23+0x15 = 0x38 23+0x15 = 0x38 0x23+15 = 0x38 23+15 = 0x38 a+b = 0x15 3.增加列累加运算: --//增加select visual模式下列累加运算,以前有人提过,我一直没做,因为网上有1个visSum.vim插件实现类似功能.精度有一些问题,仅 --//仅支持小数点6位. --//<leader>du   在select visual模式下做列累加运算,实现的非常牵强,感觉效果还可以. --//参考链接:[20200424]vim visSum.vim合计插件.txt,选择 <leader>du 避免重名. --//许多细节可能考虑不到...感觉不管如何做都存在许多问题..... --//另外windows下bc.exe可执行程序自己要另行安装,一般我选择unxutils包,里面包括tr,sed等命令,设置好PATH环境变量就可以使用了. --//调试小技巧,可以查看vim register e,f. --//准备另外写一个简单的操作说明书. 4.改进后源代码如下: $ cat 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 on current line using bc -l, pick a mapping, or use the Leader "" vnoremap <Leader>cc mz"fy'><ESC>o<ESC>"fp!!bc -lq\| tr -d '\n\\\r' \| sed -e "s/\.\([0-9]*[1-9]\)0\+$/.\1/" -e "s/\.0\+$//"<CR>y$d$`za = <ESC>pJ "" calculate expression on current line using bc , pick a mapping, or use the Leader "" vnoremap <Leader>c0 mz"fy'><ESC>o<ESC>"fp!!bc -q\| tr -d '\n\\\r' \| sed -e "s/\.\([0-9]*[1-9]\)0\+$/.\1/" -e "s/\.0\+$//"<CR>y$d$`za = <ESC>pJ "" calculate expression on current line ( delete ,) using bc -l,  pick a mapping, or use the Leader "" vnoremap <Leader>c, mz"fy'><ESC>o<ESC>"fp!!sed "s/,//g" \|bc -lq\| tr -d '\n\\\r' \| sed -e "s/\.\([0-9]*[1-9]\)0\+$/.\1/" -e "s/\.0\+$//"<CR>y$d$`za = <ESC>pJ "" calculate expression from selection using bc -l, pick a mapping, or use the Leader vnoremap <Leader>bc "ey`>:call CalcLines(0)<CR> vnoremap <Leader>bb "ey`>:call CalcLines(0)<CR> vnoremap <Leader>cc "ey`>:call CalcLines(0)<CR> "" calculate expression from selection using bc , pick a mapping, or use the Leader vnoremap <Leader>b0 "ey`>:call CalcLines(1)<CR> vnoremap <Leader>c0 "ey`>:call CalcLines(1)<CR> "" calculate expression from selection line ( delete ,) using bc -l,  pick a mapping, or use the Leader vnoremap <Leader>b, "ey`>:call CalcLines(2)<CR> vnoremap <Leader>c, "ey`>:call CalcLines(2)<CR> "" convert hexdecimal to decimal vnoremap <Leader>10 "ey`>:call CalcLines(10)<CR> "" convert decimal to hexdecimal vnoremap <Leader>16 "ey`>:call CalcLines(16)<CR> "" computer hexdecimal to hexdecimal vnoremap <Leader>16x "ey`>:call CalcLines(1016)<CR> vnoremap <Leader>hh  "ey`>:call CalcLines(1016)<CR> "" split event P1 or P3  to TYPE and MODE or NAME and MODE vnoremap <Leader>tx "ey`>:call CalcLines(1616)<CR> "" split dba(10) or dba(16) to file# and block# vnoremap <Leader>22  "ey`>:call CalcLines(22)<CR> vnoremap <Leader>dba "ey`>:call CalcLines(22)<CR> "" split scn(10) or scn(16) into scn_wrap,scn_base vnoremap <Leader>32  "ey`>:call CalcLines(32)<CR> vnoremap <Leader>scn "ey`>:call CalcLines(32)<CR> "" convert scn_wrap,scn_base(10) or scn_wrap,scn_base(16) to 10 or 16 base vnoremap <Leader>ss "ey`>:call CalcLines(10016)<CR> "" convert file#,block# dba(10) or file#,block# dba(16) to 10 or 16 base vnoremap <Leader>rr "ey`>:call CalcLines(20016)<CR> "" convert hexdecimal to decimal or decimal to hexdecimal vnoremap <Leader>hd "ey`>:call CalcLines(30016)<CR> vnoremap <Leader>dh "ey`>:call CalcLines(30016)<CR> "" visual sum vnoremap <Leader>du "ey`>oSum<ESC>:call CalcLines(40016)<CR> "" -------------------------------------------------------------------- "" calculate expression on current line using bc -l, pick a mapping, or use the Leader "" 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 "" calculate expression on current line using bc -l, pick a mapping, or use the Leader nnoremap  <Leader>bc <Esc>"eyy$:call CalcLines(0)<CR> nnoremap  <Leader>bb <Esc>"eyy$:call CalcLines(0)<CR> nnoremap  <Leader>cc <Esc>"eyy$:call CalcLines(0)<CR> "" calculate expression on current line using bc , pick a mapping, or use the Leader nnoremap  <Leader>b0 <Esc>"eyy$:call CalcLines(1)<CR> nnoremap  <Leader>c0 <Esc>"eyy$:call CalcLines(1)<CR> "" calculate expression on current line ( delete ,) using bc -l, pick a mapping, or use the Leader nnoremap  <Leader>b, <Esc>"eyy$:call CalcLines(2)<CR> nnoremap  <Leader>c, <Esc>"eyy$:call CalcLines(2)<CR> "" convert hexdecimal to decimal nnoremap  <Leader>10 <Esc>"eyy$: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> nnoremap  <Leader>hh  <Esc>"eyy$:call CalcLines(1016)<CR> "" split event P1 or P3  to TYPE and MODE or NAME and MODE nnoremap  <Leader>tx  <Esc>"eyy$: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$:call CalcLines(30016)<CR> nnoremap  <Leader>dh <Esc>"eyy$: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, '\csin\s*(',  's (', 'g')     let str = substitute (str, '\ccos\s*(',  'c (', 'g')     let str = substitute (str, '\catan\s*(', 'a (', 'g')     let str = substitute (str, "\cln\s*(",   'l (', 'g')     let str = substitute (str, '\clog\s*(',  'l (', 'g')     let str = substitute (str, '\cexp\s*(',  '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     " only bc not argument -l     if a:flag == 1          let answer = system ("echo " . str . " \| bc " . preload)          " let answer = answer . " --- ". str     endif     " filter , from str     if a:flag == 2         let str = substitute (str, ",",   "", "g")         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")     if a:flag == 40016         let @e = substitute (@e, "\n", "+",   "g")     else         let @e = substitute (@e, "\n", "",   "g")     endif     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)     if a:flag == 40016         let answer = Calculate (@e,0)     else         let answer = Calculate (@e,a:flag)     endif     " 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