mirror of
https://github.com/dimitri/el-get.git
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103 lines
4.1 KiB
EmacsLisp
103 lines
4.1 KiB
EmacsLisp
;;; el-get --- Manage the external elisp bits and pieces you depend upon
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;;
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;; Copyright (C) 2010-2011 Dimitri Fontaine
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;;
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;; Author: Dimitri Fontaine <dim@tapoueh.org>
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;; URL: http://www.emacswiki.org/emacs/el-get
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;; GIT: https://github.com/dimitri/el-get
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;; Licence: WTFPL, grab your copy here: http://sam.zoy.org/wtfpl/
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;;
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;; This file is NOT part of GNU Emacs.
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;;
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;; Install
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;; Please see the README.md file from the same distribution
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(require 'el-get-core)
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(require 'el-get-recipes)
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(require 'sha1)
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(defcustom el-get-http-install-hook nil
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"Hook run after http retrieve."
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:group 'el-get
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:type 'hook)
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(defun el-get-filename-from-url (url)
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"return a suitable filename from given url
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Test url: http://repo.or.cz/w/ShellArchive.git?a=blob_plain;hb=HEAD;f=ack.el"
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(replace-regexp-in-string "[^a-zA-Z0-9-_\.\+]" "_"
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(file-name-nondirectory url)))
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(defun el-get-http-retrieve-callback (status package url post-install-fun &optional dest sources)
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"Callback function for `url-retrieve', store the emacs lisp file for the package."
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(let ((err (plist-get status :error)))
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(when err (error (format "could not fetch URL %s: error %s %s"
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url (car (cdr err)) (cdr (cdr err))))))
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(let* ((pdir (el-get-package-directory package))
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(dest (or dest (format "%s%s.el" (file-name-as-directory pdir) package)))
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(buffer-file-coding-system 'no-conversion)
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(require-final-newline nil))
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;; prune HTTP headers before save
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(goto-char (point-min))
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(or (re-search-forward "\r?\n\r?\n" nil t)
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(error (format "Failed to find end of headers in HTTP response from %s for package %s; see buffer %s"
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url package (buffer-name))))
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(write-region (point) (point-max) dest)
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(kill-buffer))
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(funcall post-install-fun package))
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(defun el-get-http-dest-filename (package &optional url)
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"Return where to store the file at given URL for given PACKAGE"
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(let* ((pdir (el-get-package-directory package))
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(url (or url (plist-get (el-get-package-def package) :url)))
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(fname (or (plist-get (el-get-package-def package) :localname)
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(el-get-filename-from-url url))))
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(expand-file-name fname pdir)))
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(defun el-get-http-install (package url post-install-fun &optional dest)
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"Dowload a single-file PACKAGE over HTTP and store it in DEST.
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Should dest be omitted (nil), the url content will get written
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into the package :localname option or its `file-name-nondirectory' part."
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(let* ((pdir (el-get-package-directory package))
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(dest (or dest (el-get-http-dest-filename package url))))
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(unless (file-directory-p pdir)
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(make-directory pdir))
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(el-get-insecure-check package url)
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(if (not el-get-default-process-sync)
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(url-retrieve url 'el-get-http-retrieve-callback
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`(,package ,url ,post-install-fun ,dest ,el-get-sources))
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(with-current-buffer (url-retrieve-synchronously url)
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(goto-char (point-min))
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(el-get-http-retrieve-callback
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(let ((http-response (if (looking-at "^HTTP/[0-9]\\.[0-9] \\([0-9]\\{3\\}\\)")
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(string-to-number (match-string 1)))))
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(if (and http-response (or (< http-response 200) (< 299 http-response)))
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`(:error (error http ,http-response))))
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package url post-install-fun dest el-get-sources)))))
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(defun el-get-http-compute-checksum (package &optional url)
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"Compute SHA1 of PACKAGE."
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(with-temp-buffer
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(insert-file-contents-literally (el-get-http-dest-filename package url))
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;; Note: don't pass buffer object, `sha1' tries (and sometimes
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;; fails) to encode it.
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(sha1 (buffer-string))))
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(defun el-get-http-guess-website (package)
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(plist-get (el-get-package-def package) :url))
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(el-get-register-method :http
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:install #'el-get-http-install
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:update #'el-get-http-install
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:remove #'el-get-rmdir
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:install-hook 'el-get-http-install-hook
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:compute-checksum #'el-get-http-compute-checksum
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:guess-website #'el-get-http-guess-website)
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(el-get-register-method-alias :ftp :http)
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(provide 'el-get-http)
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