github.com/keybase/client/go@v0.0.0-20241007131713-f10651d043c8/uidmap/data/mkdata.iced (about)

     1  {Gets} = require('iced-utils')
     2  {make_esc} = require 'iced-error'
     3  zlib = require 'zlib'
     4  
     5  gojoin = (v) -> v.join(", ") + ","
     6  
     7  uid_to_byte_list = (uid) -> gojoin ("0x" + uid[i...(i+2)] for i in [0...uid.length] by 2)
     8  
     9  hexbyte = (b) ->
    10    s = b.toString(16)
    11    if b < 16 then s = "0" + s
    12    "0x#{s}"
    13  
    14  class Runner
    15  
    16    constructor : () ->
    17      map = []
    18  
    19    read : ({input}, cb) ->
    20      esc = make_esc cb, "read"
    21      gets = (new Gets input).run()
    22      map = []
    23      loop
    24        await gets.gets esc defer line
    25        break unless line?
    26        [uid,username] = line.split /\s+/
    27        map.push [ uid, username ]
    28      cb null, map
    29  
    30    output : ({map}, cb) ->
    31      out = []
    32      out.push "package uidmap"
    33      out.push ''
    34      @output_uid_list { map, out }
    35      out.push ''
    36      @output_username_block { map, out }
    37      out.push ''
    38      @output_lengths { map, out }
    39      out.join "\n"
    40  
    41    output_username_block : ({map, out}) ->
    42      block = (username for [_,username] in map).join('').toLowerCase()
    43      zipped = zlib.deflateSync(new Buffer block, 'utf8')
    44      out.push "const usernamesLen = " + block.length
    45      out.push "var usernamesCompressed = [...]byte{"
    46      for i in [0...zipped.length] by 16
    47        bytes = zipped[i...(i+16)]
    48        out.push "\t" + gojoin (hexbyte(b) for b in bytes)
    49      out.push "}"
    50  
    51    output_lengths : ({map, out}) ->
    52      out.push "var lengths = [...]uint8{"
    53      offset = 0
    54      for i in [0...map.length] by 16
    55        v = for [_,username] in map[i...(i+16)]
    56          username.length.toString 10
    57        out.push "\t" + gojoin v
    58      out.push "}"
    59  
    60    output_uid_list : ({map, out}) ->
    61      out.push "var uids = [...]byte{"
    62      for [uid] in map
    63        out.push "\t" + uid_to_byte_list(uid)
    64      out.push "}"
    65  
    66    run : ({input}, cb) ->
    67      esc = make_esc cb, "run"
    68      await @read { input }, esc defer map
    69      out = @output { map }
    70      console.log out
    71      cb null
    72  
    73  r = new Runner
    74  await r.run { input : process.stdin }, defer err
    75  rc = 0
    76  if err?
    77    console.err err.toString()
    78    rc = -2
    79  process.exit rc