/usr/share/emacs/site-lisp/w3m/w3m-rss.el is in w3m-el 1.4.4-10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 | ;;; w3m-rss.el --- RSS functions
;; Copyright (C) 2004, 2005 TSUCHIYA Masatoshi <tsuchiya@namazu.org>
;; Authors: TSUCHIYA Masatoshi <tsuchiya@namazu.org>
;; Keywords: w3m, WWW, hypermedia
;; This file is a part of emacs-w3m.
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program; if not, you can either send email to this
;; program's maintainer or write to: The Free Software Foundation,
;; Inc.; 59 Temple Place, Suite 330; Boston, MA 02111-1307, USA.
;;; Commentary:
;; w3m-rss.el provides RSS-related functions for emacs-w3m. For more
;; detail about emacs-w3m, see:
;;
;; http://emacs-w3m.namazu.org/
;;; Acknowledgment:
;; I refered functions in `sb-rss.el' to implement this module.
;; Thanks to Koichiro Ohba and NAKAJIMA Mikio.
;;; Code:
(eval-when-compile (require 'cl))
(autoload 'xml-parse-region "xml")
(eval-and-compile
(autoload 'timezone-parse-date "timezone")
(autoload 'timezone-parse-time "timezone"))
(eval-when-compile
;; Avoid warning for Emacs 19 and XEmacs.
(unless (fboundp 'match-string-no-properties)
(autoload 'match-string-no-properties "poe"))
;; Avoid warning for Emacs 19.
(unless (fboundp 'split-string)
(autoload 'split-string "poe")))
(defun w3m-rss-parse-date-string (date)
"Decode DATE string written in the ISO 8601 format or the RFC822 style.
Return a list of numbers which conforms to the Emacs internal format.
Valid types in the ISO 8601 format include:
Year:
YYYY (eg 1997)
Year and month:
YYYY-MM (eg 1997-07)
Complete date:
YYYY-MM-DD (eg 1997-07-16)
Complete date plus hours and minutes:
YYYY-MM-DDThh:mmTZD (eg 1997-07-16T19:20+01:00)
Complete date plus hours, minutes and seconds:
YYYY-MM-DDThh:mm:ssTZD (eg 1997-07-16T19:20:30+01:00)
Complete date plus hours, minutes, seconds and a decimal fraction
of a second
YYYY-MM-DDThh:mm:ss.sTZD (eg 1997-07-16T19:20:30.45+01:00)
where:
YYYY = four-digit year
MM = two-digit month (01=January, etc.)
DD = two-digit day of month (01 through 31)
hh = two digits of hour (00 through 23) (am/pm NOT allowed)
mm = two digits of minute (00 through 59)
ss = two digits of second (00 through 59)
s = one or more digits representing a decimal fraction of a second
TZD = time zone designator (Z or +hh:mm or -hh:mm)
For more detail about ISO 8601 date format, see
<URL:http://www.w3.org/TR/NOTE-datetime>.
In addition to the above, it also supports the date format in the
RFC822 style which RSS 2.0 allows. Valid types are the same as ones
which are supported by the `timezone-parse-date' function (which see)."
(cond ((not date) nil)
((string-match " [0-9]+ " date)
(let* ((vector (timezone-parse-date date))
(year (string-to-number (aref vector 0)))
time)
(when (>= year 1970)
(setq time (timezone-parse-time (aref vector 3)))
(encode-time
(string-to-number (aref time 2))
(string-to-number (aref time 1))
(string-to-number (aref time 0))
(string-to-number (aref vector 2))
(string-to-number (aref vector 1))
year
(aref vector 4)))))
((string-match "\
\\([0-9][0-9][0-9][0-9]\\)\\(-\\([0-9][0-9]\\)\\)?\\(-\\([0-9][0-9]\\)\\)?\
T?\\(\\([0-9][0-9]\\):\\([0-9][0-9]\\)\\(:\\([.0-9]+\\)\\)?\\)?\
\\(\\([-+]\\)\\([0-9][0-9]\\):?\\([0-9][0-9]\\)\\|Z\\)?"
date)
(labels ((substr (n default)
(if (match-beginning n)
(string-to-number
(match-string-no-properties n date))
default)))
(encode-time
(substr 10 0) ;; seconds
(substr 8 0) ;; minitue
(substr 7 0) ;; hour
(substr 5 1) ;; day
(substr 3 1) ;; month
(substr 1 0) ;; year
(if (match-beginning 12)
(funcall (intern (match-string-no-properties 12 date))
0
(* 3600 (substr 13 0))
(* 60 (substr 14 0)))
0))))))
(defun w3m-rss-find-el (tag data)
"Find the all matching elements in the data. Careful with this on
large documents!"
(let (found)
(when (listp data)
(dolist (bit data)
(when (car-safe bit)
(when (equal tag (car bit))
(setq found (nconc found (list bit))))
(setq found
(nconc found
(w3m-rss-find-el
tag
(if (and (listp (car-safe (caddr bit)))
(not (stringp (caddr bit))))
(caddr bit)
(cddr bit))))))))
found))
(defun w3m-rss-get-namespace-prefix (el uri)
"Given EL (containing a parsed element) and URI (containing a string
that gives the URI for which you want to retrieve the namespace
prefix), return the prefix.
See http://feeds.archive.org/validator/docs/howto/declare_namespaces.html
for more RSS namespaces."
(let* ((prefix (car (rassoc uri (cadar el))))
(nslist (when prefix
(split-string (symbol-name prefix) ":")))
(ns (cond ((eq (length nslist) 1) ; no prefix given
"")
((eq (length nslist) 2) ; extract prefix
(cadr nslist)))))
(if (and ns (not (equal ns "")))
(concat ns ":")
ns)))
(provide 'w3m-rss)
;;; w3m-rss.el ends here
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