187 lines
5.9 KiB
Scheme
Executable file
187 lines
5.9 KiB
Scheme
Executable file
#!/usr/bin/csi -s
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(import utf8
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lowdown
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(chicken string)
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(chicken port)
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(chicken io)
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(chicken process)
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(chicken process-context)
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(chicken format)
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(chicken pathname)
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(chicken file)
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sxml-transforms
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(clojurian syntax)
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)
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(define CLONE-URL (or (get-environment-variable "REPO2HTML_CLONE_URL") "git://git.example.com"))
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(define TITLE (or (get-environment-variable "REPO2HTML_TITLE") "my git repositories"))
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(define DESCRIPTION (or (get-environment-variable "REPO2HTML_DESCRIPTION") "my git repositories"))
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(define H1 (or (get-environment-variable "REPO2HTML_H1") "git.example.com"))
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(define (populate-html-template repository-name display-body-thunk)
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(display #<#string-block
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>#{TITLE}</title>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes" />
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<link rel="icon" href="data:,">
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<meta name="description" content="#{DESCRIPTION}"/>
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<style>
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body {
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margin: 0 auto;
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max-width: 700px;
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}
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pre, code {
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background-color: ##ffd9df;
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}
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pre {
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padding: 15px 20px;
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white-space: pre;
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overflow: scroll;
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}
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a { color: blue; }
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nav a { margin-right: 10px; }
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hr {
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border:0;
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border-bottom: 1px solid black;
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margin-top: 16px;
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}
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##file-path {
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/* change this to your liking */
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}
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</style>
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</head>
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<body>
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<h1>#{H1}</h1>
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<h2>#{repository-name}</h2>
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<p>clone url: #{CLONE-URL}/#{repository-name}</p>
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<nav>
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<a href="/#{repository-name}/index.html">about</a>
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<a href="/#{repository-name}/files.html">files</a>
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<a href="/#{repository-name}/contributors.html">contributors</a>
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</nav>
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<hr>
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string-block
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)
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(display-body-thunk)
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(display #<#string-block
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</body>
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</html>
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string-block
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))
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(define (display-escaped-html str)
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(SRV:send-reply (string->goodHTML str)))
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(define (in-git-directory?)
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(not (eof-object? (call-with-input-pipe "git rev-parse --git-dir" read-line))))
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(define (git-repository->paths-list)
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(call-with-input-pipe "git ls-tree -r --name-only HEAD" read-lines))
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(define (git-file->string path)
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(->
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(format "git show HEAD:~a" path)
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(call-with-input-pipe read-lines)
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(string-intersperse "\n")))
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(define (display-source-html source-file) ;; src/main.scm
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(format #t "<p id=\"file-path\">~a</p>" source-file)
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(case (string->symbol (or (pathname-extension source-file) "no-extension"))
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((md markdown)
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(handle-exceptions exn
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(begin
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(display "Error parsing " (current-error-port))
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(display source-file (current-error-port))
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(display "\n" (current-error-port))
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(display "<p><b>There was an error parsing this file as Markdown.</b></p>")
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(display "<pre>")
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(display-escaped-html (git-file->string source-file))
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(display "</pre>"))
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(markdown->html (git-file->string source-file))))
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((jpg jpeg png gif webp webm apng avif svgz ico)
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(format #t "<p><img src=\"~a\" /></p>" (pathname-strip-directory source-file)))
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((svg)
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(format #t "<p><img src=\"~a\" /></p>" (pathname-strip-directory source-file))
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(display "<pre>")
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(display-escaped-html (git-file->string source-file))
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(display "</pre>"))
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((gz pack idx)
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(display "<p>(Binary file)</p>"))
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((txt no-extension)
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(display "<pre>")
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(display-escaped-html (git-file->string source-file))
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(display "</pre>"))
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(else
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(display "<pre>")
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(display-escaped-html (git-file->string source-file))
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(display "</pre>"))))
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(define (display-files-html source-files-list)
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(display "<ul>\n")
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(for-each
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(lambda (source-file)
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(format #t "<li><a href=\"~a.html\">~a</a></li>\n" source-file source-file))
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source-files-list)
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(display "</ul>\n"))
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(define (display-readme-html)
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(markdown->html (git-file->string "README.md")))
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(define (display-contributors-html)
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(SXML->HTML
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`((h1 "Contributors")
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(ul ,(map
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(lambda (line)
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(let-values (((commits . author) (apply values (string-split line "\t"))))
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`(li ,author)))
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(call-with-input-pipe "git shortlog -ns HEAD" read-lines))))))
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(define (generate-html-files html-repo-path)
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(let ((source-files-list (git-repository->paths-list))
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(repository-name (pathname-strip-directory html-repo-path)))
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(define (write-with-template filename display-body-thunk)
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(let ((destination-directory (pathname-directory filename)))
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(when destination-directory
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(create-directory (make-pathname html-repo-path destination-directory) #t)))
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(with-output-to-file (make-pathname html-repo-path filename)
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(lambda () (populate-html-template repository-name display-body-thunk))))
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(create-directory html-repo-path #t)
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(write-with-template "index.html" (lambda () (display-readme-html)))
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(write-with-template "files.html" (lambda () (display-files-html source-files-list)))
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(write-with-template "contributors.html" (lambda () (display-contributors-html)))
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(for-each
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(lambda (source-file)
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(write-with-template
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(string-append source-file ".html")
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(lambda () (display-source-html source-file)))
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(case (string->symbol (or (pathname-extension source-file) ""))
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((jpg jpeg png gif webp webm svg apng avif svgz ico)
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(system (format "git show HEAD:~a > ~a"
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source-file
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(make-pathname html-repo-path source-file))))))
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source-files-list)))
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(define (bail . args)
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(let-optionals args ((status 1) (msg ""))
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(unless (equal? "" msg) (print msg))
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(exit status)))
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(define (main args)
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(let-optionals args ((html-repo-path ""))
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(when (equal? html-repo-path "")
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(bail 1 "please specify a destination directory for html files"))
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(unless (in-git-directory?)
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(bail 1 "woops this isn't a git directory"))
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(generate-html-files html-repo-path)))
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(main (command-line-arguments))
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