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ANSI Detection and Response System V2.1 - Features and Implementation Details

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This document details the ANSI detection and response system created by Steve Catmull and enhanced by David Terry. It began development on April 26, 1993, and focuses on identifying ANSI and RIP graphics in user inputs. Key components include storage for user responses, handling of backspaces, and determining system compatibility. The system allows for dynamic detection of ANSI graphics, manages user input efficiently, and provides an option for quick login. This technology serves to enhance user experience in graphical user interfaces.

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ANSI Detection and Response System V2.1 - Features and Implementation Details

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  1. ;*****************************************************************************;*****************************************************************************

  2. ;* *

  3. ;* ANSI DETECTION V2.1 *

  4. ;* *

  5. ;* written by: Steve Catmull *

  6. ;* additional coding: David Terry *

  7. ;* *

  8. ;* started: 04-26-93 *

  9. ;* *

  10. ;*****************************************************************************;*****************************************************************************

  11. BOOLEAN hasansi ; Result of ANSI - detection test (true or false)

  12. BOOLEAN hasrip ; Result of ANSI - detection test (RIP & ANSI)

  13. STRING graphdef ; Stores response to the "ask" prompt below

  14. STRING ask ; Constant that contains "want graphics" minus default resp.

  15. INTEGER numticks ; Used to store number of clock ticks that I have waited.

  16. STRING maxticks ; Stores the maximum number of ticks to wait for response.

  17. INTEGER waitlen ; Number of characters specified as wait time (2 or 3 digit)

  18. STRING delayticks ; If no byte pending delay x ticks and try again.

  19. STRING temp ; Stores the token of what user inputed.

  20. STRING default_yes ; Used to store setting from PCBOARD.DAT for the default

  21. STRING rest_ANSI ; Store rest of input buffer if any after ANSI CPR.

  22. STRING temp_dir ; Temporary/work directory as defined in PCBSetup

  23. STRING bkspace ; Sequence of characters for destructive backspace dwt

  24. STRING esc ; Constant used instead of chr(27)

  25. STRING cr_lf ; Constant used instead of chr(13)+chr(10)

  26. BOOLEAN recorded ; Not really used anymore but leave it in here.

  27. BOOLEAN compatible ; Used to determine is sysop wants to use compatible mode.

  28. BOOLEAN debug ; Used for debugging (capturing incoming response)

  29. STRING nonews ; For parsing out what user enters

  30. STRING nowelc ; For parsing out what user enters

  31. STRING ansi ; For parsing out what user enters

  32. STRING rip ; For parsing out what user enters

  33. STRING noansi ; For parsing out what user enters

  34. STRING autoansr ; Used to skip graphics question if graphics detected

  35. STRING rip_detect ; Used to disable RIPscrip checking. For those without RIP.

  36. STRING allow_quick ; Used to enable or disable the "quick" login feature.

  37. temp = "" ; Initialized to non null for WHILE

  38. bkspace = chr(8)+chr(32)+chr(8) ; destructive backspace dwt

  39. maxticks = 50 ; (50/18.2 seconds)

  40. delayticks = 3 ; Wait 3 ticks if no input (when checking for response)

  41. debug = false

  42. esc = chr(27)

  43. cr_lf = chr(13)+chr(10)

  44. rip_detect = true ; Assume RIPscrip detection.

  45. allow_quick="Q" ; Add to the valid entry string

  46. ; Analyze Command line passed

  47. temp=gettoken()

  48. while (temp != "") DO

  49. if (mid(upper(temp),2,1) = "W") then

  50. waitlen = len(temp)-instr(temp,":")

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