initial commit

.gitignore

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+.stack-work

LICENSE

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+Copyright Abigail Magalhães (c) 2021
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Abigail Magalhães nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+# agda-fold-equations

Setup.hs

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+import Distribution.Simple
+main = defaultMain

agda-fold-equations.cabal

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+cabal-version: 2.2
+name:          agda-fold-equations
+version:       0.1.0.0
+
+executable agda-fold-equations
+  hs-source-dirs:      src
+  main-is:             Main.hs
+  default-language:    Haskell2010
+  build-depends:       base >= 4.7 && < 5
+                     , tagsoup
+                     , text

hie.yaml

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+cradle:
+  stack:

src/Main.hs

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+{-# LANGUAGE OverloadedStrings #-}
+module Main where
+
+import qualified Data.Text.Lazy.IO as Text
+import qualified Data.Text.Lazy as Text
+import Data.Text.Lazy (Text)
+
+import Text.HTML.TagSoup
+import System.Environment
+import Control.Exception
+import Data.Maybe
+
+main :: IO ()
+main = do
+  [file] <- getArgs
+  tags <- parseTags <$> Text.readFile file
+  evaluate (length tags)
+  Text.writeFile file (renderTags (hideSteps False tags))
+
+hideSteps :: Bool -> [Tag Text] -> [Tag Text]
+hideSteps has_eqn (to@(TagOpen "a" attrs):tt@(TagText t):tc@(TagClose "a"):rest)
+  | Text.length t >= 1, Text.last t == '⟨', Just href <- lookup "href" attrs =
+    [ TagOpen "span" [("class", "reasoning-step")]
+    , TagOpen "span" [("class", "as-written " <> fromMaybe "" (lookup "class" attrs))]
+    , to, tt, tc ] ++ go href rest
+  where
+    alternate = Text.init t
+    go href (to@(TagOpen "a" attrs):tt@(TagText t):tc@(TagClose "a"):cs)
+      | Text.length t >= 1
+      , Text.head t == '⟩'
+      , Just href' <- lookup "href" attrs
+      , href' == href
+      = [ to, tt, tc, TagClose "span"
+        , TagOpen "span" [("class", "alternate " <> fromMaybe "" (lookup "class" attrs))]
+        , TagText alternate
+        , TagClose "span"
+        , TagClose "span"
+        ] ++ hideSteps True cs
+    go href (c:cs) = c:go href cs
+    go _ [] = []
+hideSteps False (TagClose "html":cs) =
+     [TagOpen "style" [], TagText ".equations { display: none !important; }", TagClose "style", TagClose "html"]
+  ++ hideSteps True cs
+hideSteps has_eqn (c:cs) = c:hideSteps has_eqn cs
+hideSteps _ [] = []

stack.yaml

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+# This file was automatically generated by 'stack init'
+#
+# Some commonly used options have been documented as comments in this file.
+# For advanced use and comprehensive documentation of the format, please see:
+# https://docs.haskellstack.org/en/stable/yaml_configuration/
+
+# Resolver to choose a 'specific' stackage snapshot or a compiler version.
+# A snapshot resolver dictates the compiler version and the set of packages
+# to be used for project dependencies. For example:
+#
+# resolver: lts-3.5
+# resolver: nightly-2015-09-21
+# resolver: ghc-7.10.2
+#
+# The location of a snapshot can be provided as a file or url. Stack assumes
+# a snapshot provided as a file might change, whereas a url resource does not.
+#
+# resolver: ./custom-snapshot.yaml
+# resolver: https://example.com/snapshots/2018-01-01.yaml
+resolver:
+  url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/13.yaml
+
+# User packages to be built.
+# Various formats can be used as shown in the example below.
+#
+# packages:
+# - some-directory
+# - https://example.com/foo/bar/baz-0.0.2.tar.gz
+#   subdirs:
+#   - auto-update
+#   - wai
+packages:
+- .
+# Dependency packages to be pulled from upstream that are not in the resolver.
+# These entries can reference officially published versions as well as
+# forks / in-progress versions pinned to a git hash. For example:
+#
+# extra-deps:
+# - acme-missiles-0.3
+# - git: https://github.com/commercialhaskell/stack.git
+#   commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
+#
+# extra-deps: []
+
+# Override default flag values for local packages and extra-deps
+# flags: {}
+
+# Extra package databases containing global packages
+# extra-package-dbs: []
+
+# Control whether we use the GHC we find on the path
+# system-ghc: true
+#
+# Require a specific version of stack, using version ranges
+# require-stack-version: -any # Default
+# require-stack-version: ">=2.7"
+#
+# Override the architecture used by stack, especially useful on Windows
+# arch: i386
+# arch: x86_64
+#
+# Extra directories used by stack for building
+# extra-include-dirs: [/path/to/dir]
+# extra-lib-dirs: [/path/to/dir]
+#
+# Allow a newer minor version of GHC than the snapshot specifies
+# compiler-check: newer-minor

stack.yaml.lock

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+# This file was autogenerated by Stack.
+# You should not edit this file by hand.
+# For more information, please see the documentation at:
+#   https://docs.haskellstack.org/en/stable/lock_files
+
+packages: []
+snapshots:
+- completed:
+    size: 586268
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/13.yaml
+    sha256: d9e658a22cfe8d87a64fdf219885f942fef5fe2bcb156a9800174911c5da2443
+  original:
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/13.yaml