diff options
Diffstat (limited to 'tex/context/base/l-md5.lua')
| -rw-r--r-- | tex/context/base/l-md5.lua | 33 |
1 files changed, 24 insertions, 9 deletions
diff --git a/tex/context/base/l-md5.lua b/tex/context/base/l-md5.lua index 1d471c966..6abf2e17d 100644 --- a/tex/context/base/l-md5.lua +++ b/tex/context/base/l-md5.lua @@ -31,15 +31,30 @@ if not md5.dec then function md5.dec(str) return convert(str,"%03i") end end --~ function md5.dec(str) return (gsub(md5.sum(str),".",remap)) end --~ end -function file.needs_updating(oldname,newname,threshold) -- size modification access change - local oldtime = lfs.attributes(oldname, modification) - local newtime = lfs.attributes(newname, modification) - if newtime >= oldtime then - return false - elseif oldtime - newtime < (threshold or 1) then - return false +function file.needsupdating(oldname,newname,threshold) -- size modification access change + local oldtime = lfs.attributes(oldname,"modification") + if oldtime then + local newtime = lfs.attributes(newname,"modification") + if not newtime then + return true -- no new file, so no updating needed + elseif newtime >= oldtime then + return false -- new file definitely needs updating + elseif oldtime - newtime < (threshold or 1) then + return false -- new file is probably still okay + else + return true -- new file has to be updated + end else - return true + return false -- no old file, so no updating needed + end +end + +file.needs_updating = file.needsupdating + +function file.syncmtimes(oldname,newname) + local oldtime = lfs.attributes(oldname,"modification") + if oldtime and lfs.isfile(newname) then + lfs.touch(newname,oldtime,oldtime) end end @@ -61,7 +76,7 @@ function file.loadchecksum(name) return nil end -function file.savechecksum(name, checksum) +function file.savechecksum(name,checksum) if not checksum then checksum = file.checksum(name) end if checksum then io.savedata(name .. ".md5",checksum) |