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#!/usr/bin/guile \
-q -e main -s
!#
(add-to-load-path (dirname (current-filename)))
(add-to-load-path (string-append (dirname (current-filename)) "/monad/"))
(add-to-load-path "/home/hugo/lib/guile")
(add-to-load-path "/home/hugo/code/calparse") ; For (util), move that to a library
(setenv "LD_LIBRARY_PATH" (dirname (current-filename)))
(use-modules #; (sxml simple)
;; (sxml match)
(srfi srfi-1)
(srfi srfi-26)
(srfi srfi-43) ; Vector iteration
;; (ice-9 rdelim)
(ice-9 regex)
(ice-9 popen)
(macros arrow)
(util)
(control monad)
(control monad state)
(data stack)
(fmt-stack)
(html)
(json))
(define-macro (regex-case str . cases)
`(cond
,@(map (lambda (case)
(let ((pattern (car case))
(rest (cdr case)))
(if (eq? pattern 'else)
`(else ,@rest)
`((string-match ,pattern ,str) ,@rest))))
cases)))
(define (substr-1 match)
(match:substring match 1))
(define (class-handlers class)
(fold (lambda (cl obj)
(regex-case
cl
("^DH$" (set-style obj 'bold))
("^bg([BYC])$" => (compose (cut set-bg obj <>) string->symbol substr-1))
("^([BYC])$" => (compose (cut set-fg obj <>) string->symbol substr-1))
(else obj)))
(empty-fmt-frame)
(string-split class #\space)))
;;; TODO every push and pop should emit current ANSI-escape after it has run.
(use-modules (ice-9 match))
;;; TODO Every clause should return a string, in the state context of a state.
;; +-- State storage, "mutable"
;; | +- Return value, static
;; V V
;; sxml → State <fmt-stack> <string>
(define (fmt-tag tag)
(match tag
[('a _ body ...)
(do fmt-before <- (get-attr)
(push (make-fmt-frame 'underline 'B #f))
fmt-with <- (get-attr)
(pop)
(return-state
(string-append fmt-with (car body) fmt-before)))]
[((or 'h1 'span) attrs nodes ...)
(do let class = (hashq-ref attrs 'class)
fmt-before <- (get-attr)
(push (class-handlers class))
fmt-with <- (get-attr)
ret <- (fmap (cut string-append fmt-with <> fmt-before)
(fmap string-concatenate (sequence (map fmt-tag nodes))))
(pop)
(return-state ret))]
;; Default rule, since the above case requires a class list
[(tag _ node nodes ...)
(fmap string-concatenate (sequence (map fmt-tag (cons node nodes))))]
;; Just ignore tags without children
[(tag _) (return-state "")]
[(? string? str) (return-state str)]
[default (return-state (format #f "[|~a|]" default))]))
(define (parse-html-string str)
(let ((fname (tmpnam)))
(with-output-to-file fname
(lambda () (display str)))
(parse-html fname)))
(define (text-for-num j int)
(let* ((table (vector-ref j (- int 100)))
(arr (hashq-ref table 'content))
(text (array-ref arr 0)))
text))
(define (max-date vect)
(vector-fold (lambda (i accum el) (max accum (hashq-ref el 'date_updated_unix)))
0 vect))
(define (cache-dir)
(string-append
(or (getenv "XDG_CACHE_HOME")
(and=> (getenv "HOME") (cut string-append <> "/.cache"))
"/tmp")
"/texttv/"))
(define (cfile path)
"Gives path to file in cache directory."
(string-append (cache-dir) path))
(define* (display-status-bar n max #:optional (port #t))
(let* ((progress (/ n max))
(trnc (truncate (* 60 progress))))
(format port
"\rProgress [~a~a] ~3d%"
(make-string trnc #\#)
(make-string (- 60 trnc) #\-)
(truncate (* 100 progress)))))
(define (main args)
(let* (((self filename pagestr) args)
(page (string->number pagestr)))
(unless (file-exists? (cache-dir))
(mkdir (cache-dir))
(with-output-to-file (cfile "last-updated")
(lambda () (display 0))))
(let ((last-updated (call-with-input-file (cfile "last-updated") read)))
(when (> (- (current-time) last-updated) 10000)
(display "Downloading new data, please stand by...")
(system* "curl"
"-s" "http://api.texttv.nu/api/get/100-999?app=hugonikanor"
"-o" (cfile filename))
(let* ((json (get-json (cfile filename)))
(update (max-date json)))
(with-output-to-file (cfile "last-updated") (lambda () (display update)))
(let ((vlen (vector-length json)))
(format (current-error-port)
"~%Rendering HTML~%")
(vector-for-each
(lambda (i el)
(let ((num (hashq-ref el 'num))
(text (vector-ref (hashq-ref el 'content) 0)))
(with-output-to-file (cfile (format #f "~a.ansi" num))
(lambda ()
(display-status-bar i vlen (current-error-port))
(-> (parse-html-string text)
fmt-tag
(run-state (list (make-fmt-frame "" "" "")))
car display)))))
json))
(display-status-bar 1 1 (current-error-port))
(newline (current-error-port))))
(let ((p1 (cfile (format #f "~a.ansi" page)))
(p2 (cfile (format #f "~a.ansi" (1+ page)))))
(system* "paste" p1 p2)))))
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