256 lines
9.0 KiB
Hy
256 lines
9.0 KiB
Hy
#!/usr/bin/env hy
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(import os re subprocess sys gettext)
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(def *version* "0.0.2")
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(def _ gettext.gettext)
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; 0: Short opt, 1: long opt, 2: takes argument, 3: help text
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(def optlist [["o" "only" true (_ "A comma-separated list of only those linters to run") ["x"]]
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["x" "exclude" true (_ "A comma-separated list of linters to skip") []]
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["b" "base" false (_ "Check all changed files in the repository, not just those in the current directory.") []]
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["a" "all" false (_ "Scan all files in the repository, not just those that have changed.")]
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["w" "workspace" false (_ "Scan the workspace") ["s"]]
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["s" "staging" false (_ "Scan the staging area (pre-commit).") []]
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["g" "changes" false (_ "Report lint failures only for diff'd sections") ["l"]]
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["l" "complete" false (_ "Report lint failures for all files") []]
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["c" "config" true (_ "Path to config file") []]
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["h" "help" false (_ "This help message") []]
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["v" "version" false (_"Version information") []]])
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; Given a set of command-line arguments, compare that to a mapped
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; version of the optlist and return a canonicalized dictionary of all
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; the arguments that have been set. For example "-c" and "--config"
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; will both be mapped to "config".
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; Given a prefix of one or two dashes and a position in the above
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; array, creates a function to map either the short or long option
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; to the option name.
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(defn make-opt-assoc [prefix pos]
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(fn [acc it] (assoc acc (+ prefix (get it pos)) (get it 1)) acc))
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; Using the above, create a full map of all arguments, then return a
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; function ready to look up any argument and return the option name.
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(defn make-options-rationalizer [optlist]
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(let [
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[short-opt-assoc (make-opt-assoc "-" 0)]
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[long-opt-assoc (make-opt-assoc "--" 1)]
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[fullset
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(ap-reduce (-> (short-opt-assoc acc it)
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(long-opt-assoc it)) optlist {})]]
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(fn [acc it] (do (assoc acc (get fullset (get it 0)) (get it 1)) acc))))
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(defn print-version []
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(print (.format "git-lint (hy version {})" *version*))
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(print "Copyright (c) 2008, 2014 Kenneth M. \"Elf\" Sternberg <elf.sternberg@gmail.com>")
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(sys.exit))
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(defn print-help []
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(print "Usage: git lint [options] [filename]")
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(ap-each optlist (print (.format " -{} --{} {}" (get it 0) (get it 1) (get it 3))))
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(sys.exit))
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; `lint` should be a directory under your .git where you store the RCs
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; for your various linters. If you want to use a global one, you'll
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; have to edit the configuration entries below.
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(def *config-path*
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(os.path.join (.get os.environ "GIT_DIR" "./.git") "lint"))
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(def *git-modified-pattern* (.compile re "^[MA]\s+(?P<name>.*)$"))
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(def *checks*
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[
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; {
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; "output" "Checking for debugger commands in Javascript..."
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; "command" "grep -n debugger {filename}"
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; "match_files" [".*\.js$"]
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; "print_filename" True
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; "error_condition" "output"
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; }
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{
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"output" "Running Jshint..."
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"command" "jshint -c {config_path}/jshint.rc {filename}"
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"match_files" [".*\.js$"]
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"print_filename" False
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"error_condition" "error"
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}
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{
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"output" "Running Coffeelint..."
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"command" "coffeelint {filename}"
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"match_files" [".*\.coffee$"]
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"print_filename" False
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"error_condition" "error"
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}
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{
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"output" "Running JSCS..."
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"command" "jscs -c {config_path}/jscs.rc {filename}"
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"match_files" [".*\.js$"]
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"print_filename" False
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"error_condition" "error"
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}
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{
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"output" "Running pep8..."
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"command" "pep8 -r --ignore=E501,W293,W391 {filename}"
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"match_files" [".*\.py$"]
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"print_filename" False
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"error_condition" "error"
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}
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{
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"output" "Running xmllint..."
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"command" "xmllint {filename}"
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"match_files" [".*\.xml"]
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"print_filename" False
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"error_condition" "error"
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}
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]
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)
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(defn get-git-response [cmd]
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(let [[fullcmd (+ ["git"] cmd)]
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[process (subprocess.Popen fullcmd
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:stdout subprocess.PIPE
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:stderr subprocess.PIPE)]
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[(, out err) (.communicate process)]]
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(, out err process.returncode)))
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(defn run-git-command [cmd]
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(let [[fullcmd (+ ["git"] cmd)]]
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(subprocess.call fullcmd
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:stdout subprocess.PIPE
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:stderr subprocess.PIPE)))
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(defn get-shell-response [fullcmd]
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(let [[process (subprocess.Popen fullcmd
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:stdout subprocess.PIPE
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:stderr subprocess.PIPE
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:shell True)]
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[(, out err) (.communicate process)]]
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(, out err process.returncode)))
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(defn derive-max-code [code-pairs]
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(reduce
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(fn [m i] (if (> (abs (get i 0)) (abs m)) (get i 0) m))
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code-pairs 0))
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(defn derive-message-bodies [code-pairs]
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(lmap (fn [i] (get i 1)) code-pairs))
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(defn lmap (pred iter) (list (map pred iter)))
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(defn encode-shell-messages [prefix messages]
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(lmap (fn [line] (.format "{}{}" prefix (.decode line "utf-8")))
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(.splitlines messages)))
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(defn run-external-checker [filename check]
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(let [[cmd (-> (get check "command")
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(.format
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:filename filename
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:config_path *config-path*))]
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[(, out err returncode) (get-shell-response cmd)]]
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(if (or (and out (= (.get check "error_condition" "error") "output"))
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err
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(not (= returncode 0)))
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(let [[prefix (if (get check "print_filename")
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(.format "\t{}:" filename)
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"\t")]
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[output (+ (encode-shell-messages prefix out)
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(if err (encode-shell-messages prefix err) []))]]
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[(or returncode 1) output])
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[0 []])))
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(defn matches-file [filename match-files]
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(any (map (fn [match-file] (-> (.compile re match-file)
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(.match filename)))
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match-files)))
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(defn check-scan-wanted [filename check]
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(cond [(and (in "match_files" check)
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(not (matches-file filename (get check "match_files")))) false]
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[(and (in "ignore_files" check)
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(matches-file filename (get check "ignore_files"))) false]
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[true true]))
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(defn check-files [filenames check]
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(let [[filenames-to-check
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(filter (fn [filename] (check-scan-wanted filename check)) filenames)]
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[results-of-checks
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(lmap (fn [filename]
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(run-external-checker filename check)) filenames-to-check)]
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[messages (+ [(get check "output")]
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(derive-message-bodies results-of-checks))]]
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[(derive-max-code results-of-checks) messages]))
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(defn gather-all-filenames []
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(let [[build-filenames
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(fn [filenames]
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(map
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(fn [f] (os.path.join (get filenames 0) f)) (get filenames 2)))]]
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(list
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(flatten
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(list-comp (build-filenames o) [o (.walk os ".")])))))
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(defn gather-staged-filenames [against]
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(let [[(, out err returncode)
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(get-git-response ["diff-index" "--name-status" against])]
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[lines (.splitlines out)]
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[matcher
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(fn [line]
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(.match *git-modified-pattern* (.decode line "utf-8")))]]
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(list
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(filter
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(fn [x] (not (= x "")))
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(list-comp (.group match "name") [match (map matcher lines)] match)))))
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(defn run-checks-for [scan-all-files against]
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(do
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(run-git-command ["stash" "--keep-index"])
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(let [[filenames-to-scan
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(if scan-all-files
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(gather-all-filenames)
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(gather-staged-filenames against))]
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[results-of-scan
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(lmap (fn [check] (check-files filenames-to-scan check)) *checks*)]
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[exit-code (derive-max-code results-of-scan)]
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[messages (flatten (derive-message-bodies results-of-scan))]]
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(do
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(for [line messages] (print line))
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(run-git-command ["reset" "--hard"])
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(run-git-command ["stash" "pop" "--quiet" "--index"])
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exit-code))))
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(defn get-head-tag []
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(let [[empty-repository-hash "4b825dc642cb6eb9a060e54bf8d69288fbee4904"]
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[(, out err returncode) (get-git-response ["rev-parse" "--verify HEAD"])]]
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(if err empty-repository-hash "HEAD")))
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(defmain [&rest args]
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(let [[scan-all-files (and (> (len args) 1) (= (get args 2) "--all-files"))]]
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(sys.exit (int (run-checks-for scan-all-files (get-head-tag))))))
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(defmain [&rest args]
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(try
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(let [[optstringsshort
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(string.join (ap-map (+ (. it [0]) (cond [(. it [2]) ":"] [true ""])) optlist) "")]
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[optstringslong
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(list (ap-map (+ (. it [1]) (cond [(. it [2]) "="] [true ""])) optlist))]
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[(, opt arg)
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(getopt.getopt (slice args 1) optstringsshort optstringslong)]
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[rationalize-options
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(make-options-rationalizer optlist)]
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[options
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(sanify-options (ap-reduce (rationalize-options acc it) opt {}))]]
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(cond [(.has_key options "help") (print-help)]
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[(.has_key options "version") (print-version)]
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[true (suggest options)]))
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(catch [err getopt.GetoptError]
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(print (str err))
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(print-help))))
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