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annotate share/lua/5.2/luarocks/fs/unix.lua @ 8683:ebcf284eeb4f
<oerjan> ` mv she* bin
author | HackBot |
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date | Sun, 03 Jul 2016 23:27:00 +0000 |
parents | d137f631bad5 |
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1132
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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1 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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2 --- Unix implementation of filesystem and platform abstractions. |
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3 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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4 local assert, type, table, io, package, math, os, ipairs = |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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5 assert, type, table, io, package, math, os, ipairs |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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6 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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7 module("luarocks.fs.unix", package.seeall) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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8 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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9 local fs = require("luarocks.fs") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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10 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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11 local cfg = require("luarocks.cfg") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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12 local dir = require("luarocks.dir") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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13 local fs = require("luarocks.fs") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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14 local util = require("luarocks.util") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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15 |
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16 math.randomseed(os.time()) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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17 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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18 --- Annotate command string for quiet execution. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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19 -- @param cmd string: A command-line string. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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20 -- @return string: The command-line, with silencing annotation. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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21 function quiet(cmd) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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22 return cmd.." 1> /dev/null 2> /dev/null" |
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23 end |
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24 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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25 --- Return an absolute pathname from a potentially relative one. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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26 -- @param pathname string: pathname to convert. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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27 -- @param relative_to string or nil: path to prepend when making |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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28 -- pathname absolute, or the current dir in the dir stack if |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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29 -- not given. |
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30 -- @return string: The pathname converted to absolute. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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31 function absolute_name(pathname, relative_to) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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32 assert(type(pathname) == "string") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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33 assert(type(relative_to) == "string" or not relative_to) |
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34 |
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35 relative_to = relative_to or fs.current_dir() |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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36 if pathname:sub(1,1) == "/" then |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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37 return pathname |
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38 else |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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39 return relative_to .. "/" .. pathname |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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40 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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41 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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42 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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43 --- Create a wrapper to make a script executable from the command-line. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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44 -- @param file string: Pathname of script to be made executable. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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45 -- @param dest string: Directory where to put the wrapper. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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46 -- @return boolean or (nil, string): True if succeeded, or nil and |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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47 -- an error message. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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48 function wrap_script(file, dest) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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49 assert(type(file) == "string") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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50 assert(type(dest) == "string") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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51 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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52 local base = dir.base_name(file) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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53 local wrapname = fs.is_dir(dest) and dest.."/"..base or dest |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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54 local wrapper = io.open(wrapname, "w") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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55 if not wrapper then |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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56 return nil, "Could not open "..wrapname.." for writing." |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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57 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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58 wrapper:write("#!/bin/sh\n\n") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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59 wrapper:write('LUA_PATH="'..package.path..';$LUA_PATH"\n') |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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60 wrapper:write('LUA_CPATH="'..package.cpath..';$LUA_CPATH"\n') |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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61 wrapper:write('export LUA_PATH LUA_CPATH\n') |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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62 wrapper:write('exec "'..dir.path(cfg.variables["LUA_BINDIR"], cfg.lua_interpreter)..'" -lluarocks.loader "'..file..'" "$@"\n') |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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63 wrapper:close() |
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64 if fs.chmod(wrapname, "0755") then |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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65 return true |
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66 else |
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67 return nil, "Could not make "..wrapname.." executable." |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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68 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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69 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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70 |
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71 --- Check if a file (typically inside path.bin_dir) is an actual binary |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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72 -- or a Lua wrapper. |
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73 -- @param filename string: the file name with full path. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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74 -- @return boolean: returns true if file is an actual binary |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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75 -- (or if it couldn't check) or false if it is a Lua wrapper. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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76 function is_actual_binary(filename) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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77 if filename:match("%.lua$") then |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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78 return false |
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79 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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80 local file = io.open(filename) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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81 if not file then |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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82 return true |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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83 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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84 local first = file:read(2) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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85 file:close() |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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86 if not first then |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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87 util.printerr("Warning: could not read "..filename) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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88 return true |
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89 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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90 return first ~= "#!" |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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91 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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92 |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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93 function copy_binary(filename, dest) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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94 return fs.copy(filename, dest, "0755") |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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95 end |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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96 |
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97 --- Move a file on top of the other. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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98 -- The new file ceases to exist under its original name, |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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99 -- and takes over the name of the old file. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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100 -- On Unix this is done through a single rename operation. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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101 -- @param old_file The name of the original file, |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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102 -- which will be the new name of new_file. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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103 -- @param new_file The name of the new file, |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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104 -- which will replace old_file. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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105 -- @return boolean or (nil, string): True if succeeded, or nil and |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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106 -- an error message. |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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107 function replace_file(old_file, new_file) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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108 return os.rename(new_file, old_file) |
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<GreyKnight> (cd luabuild/luarocks-2.0.12; make install)
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109 end |