Created
January 23, 2012 22:28
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Vim Script Intel HEX Checksum
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| function IHexChecksum() | |
| let l:data = getline(".") | |
| let l:dlen = strlen(data) | |
| if (empty(matchstr(l:data, "^:\\(\\x\\x\\)\\{5,}$"))) | |
| echoerr("Input is not a valid Intel HEX line!") | |
| return | |
| endif | |
| let l:byte = 0 | |
| for l:bytepos in range(1, l:dlen-4, 2) | |
| let l:byte += str2nr(strpart(l:data, l:bytepos, 2), 16) | |
| endfor | |
| let l:byte = (256-(l:byte%256))%256 | |
| call setline(".", strpart(l:data, 0, l:dlen-2).printf("%02x", l:byte)) | |
| endfunction |
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If you found your way here you might want to check out the article on my blog that goes with this code: http://www.charles-keepax.co.uk/blog/IntelHEXChecksumsInVim.html