ew-var.el

   1 (provide 'ew-var)
   2
   3 ;;; user customizable variables.
   4
   5 (defvar ew-decode-sticked-encoded-word nil)
   6 (defvar ew-decode-quoted-encoded-word nil)
   7 (defvar ew-ignore-75bytes-limit nil)
   8 (defvar ew-ignore-76bytes-limit nil)
   9 (defvar ew-permit-sticked-comment nil)
  10 (defvar ew-permit-sticked-special nil)
  11
  12 ;;; anonymous function to decode ground string.
  13 ;; NOTE: STR is CRLF-form and it should return as CRLF-form.
  14 (defvar ew-decode-us-ascii (lambda (str) (decode-coding-string str 'iso-latin-1-unix)))
  15
  16 ;;;
  17 (defvar ew-decode-field-syntax-alist
  18 '(("from"               ew-scan-unibyte-std11 . ew:tag-mailbox+-tok)
  19   ("sender"             ew-scan-unibyte-std11 . ew:tag-mailbox-tok)
  20   ("to"                 ew-scan-unibyte-std11 . ew:tag-address+-tok)
  21   ("resent-to"          ew-scan-unibyte-std11 . ew:tag-address+-tok)
  22   ("cc"                 ew-scan-unibyte-std11 . ew:tag-address+-tok)
  23   ("resent-cc"          ew-scan-unibyte-std11 . ew:tag-address+-tok)
  24   ("bcc"                ew-scan-unibyte-std11 . ew:tag-address*-tok)
  25   ("resent-bcc"         ew-scan-unibyte-std11 . ew:tag-address*-tok)
  26   ("message-id"         ew-scan-unibyte-std11)
  27   ("resent-message-id"  ew-scan-unibyte-std11)
  28   ("in-reply-to"        ew-scan-unibyte-std11 . ew:tag-phrase-msg-id*-tok)
  29   ("references"         ew-scan-unibyte-std11 . ew:tag-phrase-msg-id*-tok)
  30   ("keywords"           ew-scan-unibyte-std11 . ew:tag-phrase*-tok)
  31   ("subject"            ew-scan-unibyte-unstructured)
  32   ("comments"           ew-scan-unibyte-unstructured)
  33   ("encrypted"          ew-scan-unibyte-std11)
  34   ("date"               ew-scan-unibyte-std11)
  35   ("reply-to"           ew-scan-unibyte-std11 . ew:tag-address+-tok)
  36   ("received"           ew-scan-unibyte-std11)
  37   ("resent-reply-to"    ew-scan-unibyte-std11 . ew:tag-address+-tok)
  38   ("resent-from"        ew-scan-unibyte-std11 . ew:tag-mailbox+-tok)
  39   ("resent-sender"      ew-scan-unibyte-std11 . ew:tag-mailbox-tok)
  40   ("resent-date"        ew-scan-unibyte-std11)
  41   ("return-path"        ew-scan-unibyte-std11)
  42   ("mime-version"       ew-scan-unibyte-std11)
  43   ("content-type"       ew-scan-unibyte-mime)
  44   ("content-transfer-encoding"  ew-scan-unibyte-mime)
  45   ("content-id"         ew-scan-unibyte-mime)
  46   ("content-description"        ew-scan-unibyte-unstructured)
  47 ))
  48
  49 (defvar ew-decode-field-default-syntax '(ew-scan-unibyte-unstructured))
  50
  51 ;;; constants.
  52
  53 (defconst ew-token-regexp "[-!#-'*+0-9A-Z^-~]+")
  54 (defconst ew-encoded-text-regexp "[!->@-~]+")
  55 (defconst ew-encoded-word-regexp
  56   (concat (regexp-quote "=?")
  57           "\\(" ew-token-regexp "\\)"
  58           (regexp-quote "?")
  59           "\\(" ew-token-regexp "\\)"
  60           (regexp-quote "?")
  61           "\\(" ew-encoded-text-regexp "\\)"
  62           (regexp-quote "?=")))
  63
  64 ;;; utilities for variables.
  65
  66 (defun ew-dynamic-options ()
  67   (list
  68    ew-decode-sticked-encoded-word
  69    ew-decode-quoted-encoded-word
  70    ew-ignore-75bytes-limit
  71    ew-ignore-76bytes-limit
  72    ew-permit-sticked-comment
  73    ew-permit-sticked-special))