From 6a4b845639e306bff2510a7cf177c57cdd440d02 Mon Sep 17 00:00:00 2001 From: hellerve Date: Sun, 21 Feb 2016 19:06:39 +0100 Subject: [PATCH] initial --- LICENSE | 340 +++++++++++++++++++++++++++++++++++++++++++++++++++++ README.md | 26 ++++ request.zp | 80 +++++++++++++ 3 files changed, 446 insertions(+) create mode 100644 LICENSE create mode 100644 README.md create mode 100644 request.zp diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..8cdb845 --- /dev/null +++ b/LICENSE @@ -0,0 +1,340 @@ + GNU GENERAL PUBLIC LICENSE + Version 2, June 1991 + + Copyright (C) 1989, 1991 Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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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, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +Also add information on how to contact you by electronic and paper mail. + +If the program is interactive, make it output a short notice like this +when it starts in an interactive mode: + + Gnomovision version 69, Copyright (C) year name of author + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + {signature of Ty Coon}, 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. + diff --git a/README.md b/README.md new file mode 100644 index 0000000..60f3037 --- /dev/null +++ b/README.md @@ -0,0 +1,26 @@ +# request + +A minimal request library for and in zepto. +Requires at least version 0.9.2. + +## Usage + +This library exposes a few endpoints for simple +REST interfaces (seriously, if you need professional-grade +stuff, use something else). Usage looks a little like this. + +````clojure +(load "request/request") +(import-all "request") + +(request:get "google.com") ; Additionally, you can specify headers as a hash-map +; => a hash-map with the values :body, :headers :status, :version and :message + +(request:set-follow-redirects! #t) ; Redirects are followed +(reqest:get "google.com:80") +; => this redirects me to another (the german) google page +``` + +
+ +Have fun! diff --git a/request.zp b/request.zp new file mode 100644 index 0000000..389526e --- /dev/null +++ b/request.zp @@ -0,0 +1,80 @@ +(module "request" + (export + (list "set-buffer-size!" set-buffer-size) + (list "set-default-headers!" set-default-headers) + (list "set-follow-redirects!" set-follow-redirects) + (list "request" request) + (list "get" get) + (list "put" put) + (list "post" post) + (list "delete" delete)) + + (BSIZE (make-small 1024)) + (DFLT-HEADERS (make-hash "User-Agent" (++ "zepto-" (zepto:version-str)))) + (FOLLOW-REDIRECTS #f) + + (set-buffer-size (lambda (nsize) + (set! BSIZE nsize))) + + (set-default-headers (lambda (headers) + (set! DFLT-HEADERS headers))) + + (set-follow-redirects (lambda (flag) + (set! FOLLOW-REDIRECTS flag))) + + (parse-request (lambda (req scheme path req-headers) + (let* ((split (string:split req "\r\n\r\n")) + (headers (if (> (length split) 1) (string:split (car split) "\r\n") [])) + (body (if (truthy? headers) (string:join (cdr split) #\newline) (car split))) + (status-ln (string:split (get-from headers 0) #\space)) + (http-version (car status-ln)) + (status (cadr status-ln)) + (message (caddr status-ln)) + (split-headers (lambda (acc v) (make-hash acc (string:split v ": ")))) + (headers (reduce split-headers #{} (if (> (length headers) 1) (cdr headers) []))) + (res (make-hash :headers headers + :body body + :status (string->integer status) + :http http-version + :path path + :status-message message))) + (if (and (eq? (res :status) 302) FOLLOW-REDIRECTS) + (request scheme ((res :headers) "Location") req-headers) + res)))) + + (request (lambda (scheme path . req-headers) + (let* ((path (if (string:starts-with path "http://") (substring path 7 (length path)) path)) + (path (if (string:starts-with path "https://") (substring path 8 (length path)) path)) + (split (string:split path #\/)) + (location (string:join (cdr split) #\/)) + (host+port (car split)) + (split (string:split host+port #\:)) + (host (car split)) + (port (get-from split 1 "80")) + (req-headers (get-from req-headers 0 DFLT-HEADERS)) + (headers (hash:kv-reduce + (lambda (acc kv) (++ acc (->string (car kv)) ": " (->string (cadr kv)) "\r\n")) + "" + req-headers)) + (text (++ scheme " /" location " HTTP/1.1\r\nHost: " host+port "\r\n" headers "\r\n\r\n")) + (sock (net:socket "stream"))) + (begin + (net:connect sock (net:get-addr-info host port)) + (net:send sock (string->byte-vector text)) + (let loop ((recvd (net:recv sock BSIZE)) + (bytes b{})) + (if (or (falsy? (length recvd)) (string:ends-with (byte-vector->string recvd) "\r\n")) + (parse-request (byte-vector->string (++ bytes recvd)) scheme path req-headers) + (loop (net:recv sock BSIZE) (++ bytes recvd)))))))) + + (get (lambda (path . headers) + (request "GET" path (get-from headers 0 DFLT-HEADERS)))) + + (post (lambda (path . headers) + (request "POST" path) (get-from headers 0 DFLT-HEADERS))) + + (put (lambda (path . headers) + (request "PUT" path) (get-from headers 0 DFLT-HEADERS))) + + (delete (lambda (path . headers) + (request "DELETE" path) (get-from headers 0 DFLT-HEADERS))))