svgsym (empty) → 0.1.0.0
raw patch · 6 files changed
+965/−0 lines, 6 filesdep +basedep +bytestringdep +containers
Dependencies added: base, bytestring, containers, directory, filepath, filepattern, optparse-applicative, regex-tdfa, xml
Files
- CHANGELOG.md +5/−0
- LICENSE +674/−0
- README.md +55/−0
- src-exe/Main.hs +113/−0
- src-exe/Svgsym/Options.hs +82/−0
- svgsym.cabal +36/−0
+ CHANGELOG.md view
@@ -0,0 +1,5 @@+# Revision history for svgsym++## 0.1.0.0 -- YYYY-mm-dd++* First version. Released on an unsuspecting world.
+ LICENSE view
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+ README.md view
@@ -0,0 +1,55 @@+# svgsym++This is a simple tool to prune unused symbols from icon SVG files.++Specifically, this tools takes as input++- an SVG file that consists only of `symbol` elements,++- one of more glob patterns of source files, and++- a regular expression that identifies symbol references.++It then scans your source files for references to symbols in the SVG+file. The output of the tool is an SVG file that contains only the+symbols referenced in your source files.++## Example++We can prune the `all.svg` file from [css.gg](https://css.gg/) project+for a Haskell project by running the below command. Note that the+symbol regular expression consist of a single capture group that+captures the actual symbol identifier.++``` sh-session+$ svgsym css-gg/all.svg \+ --content './src/**/*.hs' \+ --symbol '"(gg-[a-z]+)"' \+ > ./output/static/css-gg.svg+```++## Bug Reports and Sending Patches++Bug reports and patches are managed through my [sourcehut public inbox][].++[sourcehut public inbox]: https://lists.sr.ht/~rycee/public-inbox++## Development++The intended development flow is to use a Nix Flake development shell,+e.g., using [Direnv](https://direnv.net/) or directly running++``` console+$ nix develop .+…+```++This will help set up a shell containing the necessary development+dependencies. This shell will also be populated with utilities that+can be run directly in the terminal:++- `p-format` – formats the project's Cabal, Haskell, and Nix code.++## License++[GNU General Public License v3.0 or later](https://spdx.org/licenses/GPL-3.0-or-later.html)
+ src-exe/Main.hs view
@@ -0,0 +1,113 @@+{-# LANGUAGE BlockArguments #-}+{-# LANGUAGE LambdaCase #-}+{-# LANGUAGE RecordWildCards #-}+{-# LANGUAGE ScopedTypeVariables #-}++module Main where++import Control.Monad (forM, when)+import qualified Data.ByteString.Lazy as LB+import Data.Foldable (Foldable (fold), find, for_)+import Data.List (isPrefixOf)+import Data.Maybe (isJust, mapMaybe)+import Data.Set (Set)+import qualified Data.Set as Set+import Data.Version (showVersion)+import Options.Applicative (execParser)+import qualified Svgsym.Options as Opts+import System.Directory (findFile, getCurrentDirectory, makeAbsolute)+import System.Exit (exitFailure)+import qualified System.Exit as System+import System.FilePath ((</>))+import System.FilePattern.Directory (FilePattern, getDirectoryFiles)+import System.IO (hPutStrLn, stderr)+import Text.Regex.TDFA (AllTextMatches (getAllTextMatches), (=~))+import Text.XML.Light (Attr (Attr), Element (Element, elContent, elName), QName (..), parseXMLDoc, ppTopElement, showElement)+import qualified Text.XML.Light as Xml++qnSvg :: QName+qnSvg = QName {qName = "svg", qURI = Just "http://www.w3.org/2000/svg", qPrefix = Nothing}++qnSymbol :: QName+qnSymbol = QName {qName = "symbol", qURI = Just "http://www.w3.org/2000/svg", qPrefix = Nothing}++qnId :: QName+qnId = QName {qName = "id", qURI = Nothing, qPrefix = Nothing}++-- | Filters the root SVG element such that only symbols in the given set+-- remain.+filterDoc :: Set String -> Element -> Element+filterDoc symbols doc =+ doc+ { elContent =+ let isUsed = isJust . find (\(Attr k v) -> k == qnId && Set.member v symbols)+ f = \case+ Xml.Text _ -> Nothing+ Xml.CRef _ -> Nothing+ Xml.Elem e@(Element qName attrs symbol _)+ | qName == qnSymbol ->+ if isUsed attrs+ then Just $ Xml.Elem e+ else Nothing+ | otherwise -> Nothing+ in mapMaybe f (elContent doc)+ }++-- | Find all symbols using the given pattern+findSymbols :: String -> String -> Set String+findSymbols pat haystack = Set.fromList $ go haystack+ where+ go "" = []+ go s =+ let (_, _, rest, match) = s =~ pat :: (String, String, String, [String])+ in match <> go rest++findFiles :: [FilePattern] -> IO [FilePath]+findFiles patterns = do+ curDir <- getCurrentDirectory+ let makeAbsolute s+ | "/" `isPrefixOf` s = s+ | otherwise = curDir </> s+ absPats = makeAbsolute <$> patterns+ getDirectoryFiles "/" absPats++findFileSymbols :: String -> [FilePath] -> IO (Set String)+findFileSymbols regex files = do+ fmap fold . forM files $ \f -> do+ s <- readFile f+ pure $ findSymbols regex s++filterSvgFile :: FilePath -> Set String -> Bool -> IO ()+filterSvgFile svgPath symbols prettyPrint = do+ input <- LB.readFile svgPath+ case parseXMLDoc input of+ Nothing -> do+ hPutStrLn stderr "Failed to read SVG file"+ exitFailure+ Just doc+ | elName doc == qnSvg -> do+ let doc' = filterDoc symbols doc+ putStrLn $+ if prettyPrint+ then ppTopElement doc'+ else showElement doc'+ | otherwise -> do+ hPutStrLn stderr "The XML file is not an SVG document"+ exitFailure++main :: IO ()+main = do+ Opts.Options {..} <- execParser Opts.parser+ files <- findFiles contentPats++ when debug do+ hPutStrLn stderr "Matched content files:"+ for_ files \f -> hPutStrLn stderr (" " <> f)++ symbols <- findFileSymbols symbolPat files++ when debug do+ hPutStrLn stderr "Matched symbols:"+ for_ symbols \s -> hPutStrLn stderr (" " <> s)++ filterSvgFile svgFile symbols prettyPrint
+ src-exe/Svgsym/Options.hs view
@@ -0,0 +1,82 @@+module Svgsym.Options (Options (..), parser) where++import Data.List (intercalate, intersperse)+import Data.Version (showVersion)+import Options.Applicative+import Options.Applicative.Types (readerAsk)+import Paths_svgsym (version)+import System.FilePattern (FilePattern)++data Options = Options+ { svgFile :: FilePath,+ contentPats :: [FilePattern],+ symbolPat :: String,+ prettyPrint :: Bool,+ debug :: Bool+ }+ deriving (Show)++parser :: ParserInfo Options+parser =+ info (opts <**> helper <**> versioner) $+ fullDesc+ <> progDesc "A tool to prune unused symbols from icon SVG files."++versionMsg :: String+versionMsg =+ intercalate+ "\n"+ [ "svgsym " <> showVersion version,+ "Copyright (C) 2022 Robert Helgesson",+ "License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.",+ "This is free software: you are free to change and redistribute it.",+ "There is NO WARRANTY, to the extent permitted by law."+ ]++versioner :: Parser (a -> a)+versioner =+ option versionReader $+ mconcat+ [ value id,+ metavar "",+ noArgError (InfoMsg versionMsg),+ long "version",+ help "print version information and exit",+ hidden+ ]+ where+ versionReader = do+ potentialCommand <- readerAsk+ readerAbort $+ InfoMsg versionMsg++opts :: Parser Options+opts =+ Options+ <$> strArgument+ ( metavar "FILE"+ <> help "SVG file to prune"+ )+ <*> some+ ( strOption+ ( long "content"+ <> short 'c'+ <> help "add glob pattern of files to include in search"+ <> metavar "GLOB"+ )+ )+ <*> strOption+ ( long "symbol"+ <> short 's'+ <> help "regular expression that extracts symbol name"+ <> metavar "REGEX"+ )+ <*> switch+ ( long "pretty"+ <> help "pretty print the output SVG file"+ )+ <*> switch+ ( long "debug"+ <> help "enable debug output"+ <> internal+ )
+ svgsym.cabal view
@@ -0,0 +1,36 @@+cabal-version: 2.4+name: svgsym+version: 0.1.0.0+synopsis: A tool to prune unused symbols from icon SVG files.+homepage: https://git.sr.ht/~rycee/svgsym+bug-reports: https://lists.sr.ht/~rycee/public-inbox+license: GPL-3.0-or-later+license-file: LICENSE+author: Robert Helgesson+maintainer: robert@rycee.net+copyright: (c) 2022 Robert Helgesson+category: Utility+extra-source-files:+ CHANGELOG.md+ README.md++executable svgsym+ main-is: Main.hs+ autogen-modules: Paths_svgsym+ other-modules:+ Paths_svgsym+ Svgsym.Options++ build-depends:+ , base ^>=4.15.1+ , bytestring ^>=0.10+ , containers ^>=0.6+ , directory ^>=1.3+ , filepath ^>=1.4+ , filepattern ^>=0.1.2+ , optparse-applicative ^>=0.16+ , regex-tdfa ^>=1.3.1+ , xml ^>=1.3++ hs-source-dirs: src-exe+ default-language: Haskell2010