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 08:19:12 - INFO: JSmith working on CLELTL3B8287.

; for testing
infoFromFile = 08:19:12 - INFO: JSmith working on CLELTL3B8287.

;parse
StringReplace, infoFromFile, infoFromFile,  - INFO:, *
StringReplace, infoFromFile, infoFromFile,  working on, *
StringTrimRight, infoFromFile, infoFromFile, 1   ;remove the .
StringSplit, tmp, infoFromFile, *, %A_Space%
log_time := tmp1
log_name := tmp2
log_device := tmp3

; for testing
infoFromFile = 08:19:12 - INFO: JSmith working on CLELTL3B8287.

; regex
log_regex := "(?P<time>(\d{2}):(\d{2}):(\d{2})) - INFO: (?P<name>\w+) working on (?P<device>\w+)\."
RegExMatch(infoFromFile, log_regex, log_)

; ---RESULTS---
; log_device: "CLELTL3B8287"
; log_name: "JSmith"
; log_time: "08:19:12"

; the RE we'll use to get the info we want
log_regex := "(?P<time>(\d{2}):(\d{2}):(\d{2})) - INFO: (?P<name>\w+) working on (?P<device>\w+)\."

; get the device number
InputBox, device_number, Enter the device number, Enter the device number
If ErrorLevel
  ExitApp

; select the folder containing the log files
FileSelectFolder, log_folder, *%A_WorkingDir%, , Select the folder with the log files
If ErrorLevel
   ExitApp

; loop through the files, looking for the device number
; when found, extract the appropriate information
Loop, %log_folder%\*.*, , 1
{
  Loop, Read, %A_LoopFileFullPath%
   {
    IfInString, A_LoopReadLine, %device_number%
    {
      RegExMatch(A_LoopReadLine, log_regex, log_)
    }
   }
}

; voila!
msgbox log_device: %log_device%`nlog_name: %log_name%`nlog_time: %log_time%