Add a basic tool for collecting web comments

The idea of hic now lives as xP within the xK project,
and the idea of hib has been implemented within xC.

.gitignore

@@ -2,6 +2,7 @@
 /hid/hid
 /hnc/hnc
 /hpcu/hpcu
+/hswg/hswg
 /ht/ht
 /prototypes/tls-autodetect
 /prototypes/xgb-draw

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2018, Přemysl Eric Janouch <p@janouch.name>
+Copyright (c) 2018 - 2022, Přemysl Eric Janouch <p@janouch.name>
 
 Permission to use, copy, modify, and/or distribute this software for any
 purpose with or without fee is hereby granted.

README.adoc

@@ -34,12 +34,7 @@ figured out it would make sense:
  - hbfe - bitmap font editor
  - he   - text editor
  - hfm  - file manager
- - hib  - IRC bouncer
- - hic  - IRC client
- - hid  - IRC daemon
- - hiv  - image viewer
  - hm   - mail client
- - hmpc - MPD client
  - hnc  - netcat-alike
  - ho   - all-powerful organizer
  - hsm  - system monitor
@@ -61,26 +56,11 @@ permeating the entire list.
 Some information is omitted from these descriptions and lies either in my head
 or in my other notes.
 
-hid -- IRC daemon
-~~~~~~~~~~~~~~~~~
-This project is unimportant by itself, its sole purpose is to gain experience
-with Go on something that I have already done and understand well.  Nothing
-beyond achieving feature parity is in the initial scope.
-
-One possibility of complicating would be adding simple WebSocket listeners but
-that's already been done for me https://github.com/kiwiirc/webircgateway and
-it's even in Go, I just need to set up kiwiirc.
-
-Later, when we have a pleasant IRC client, implement either the P10 or the TS6
-server-linking protocol and make atheme work with a generic module.
-Alternatively add support for plugins.  The goal is to allow creating integrated
-bridges to various public forums.
-
 hnc -- netcat-alike
 ~~~~~~~~~~~~~~~~~~~
-The result of testing hid with telnet, OpenSSL s_client, OpenBSD nc, GNU nc and
+The result of testing xK/xS with telnet, OpenSSL s_client, OpenBSD nc, GNU nc,
-Ncat is that neither of them can properly shutdown the connection.  We need
+and Ncat is that neither of them can properly shutdown the connection.
-a good implementation with TLS support.
+We need a good implementation with TLS support.
 
 hpcu -- PRIMARY-CLIPBOARD unifier
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -96,29 +76,12 @@ Only UTF8_STRING-convertible selections are synchronized.
 
 hswg -- static website generator
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-Wraps libasciidoc to make it understand more syntax, namely two-line/underlined
+link:hswg/README.adoc[See hswg's README for details.]
-titles, and can be run either as an AsciiDoc processor for my Gitea, or as
-a trivial wiki-like site generator.
 
 ht -- terminal emulator
 ~~~~~~~~~~~~~~~~~~~~~~~
 Similar scope to st(1).  Clever display of internal padding for better looks.
 
-hib and hic -- IRC bouncer and client
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-An IRC client is a good starting application for building a GUI toolkit, as the
-UI can afford to be truly minimalistic and most of it is text.
-
-To resolve an issue I have with my current IRC client, the client is going to be
-split into two parts: a bouncer that manages all connections and state, and
-a separate GUI that communicates with the backend over TLS/WebSocket.  Perhaps
-only the per-buffer input line is going to be desynchronized.
-
-https://godoc.org/github.com/gorilla/websocket
-
-The higher-level client-server API could be made rather generic to allow for
-smooth integration with non-IRC "backends" such as Slack or Mattermost.
-
 he -- text editor
 ~~~~~~~~~~~~~~~~~
 VIM controls, no scripting, no syntax highlight, single-file, made for
@@ -164,17 +127,6 @@ Instead of ICU we may use x/text/collate and that's about everything we need.
 Since we have our own format, we may expect the index to be ordered by the
 locale's rules, assuming they don't change between versions.
 
-hmpc -- MPD client
-~~~~~~~~~~~~~~~~~~
-Here the focus will be on the GUI toolkit.  I don't expect this application to
-get big, since its predecessor nncmpp isn't either.  The daemon takes care of
-all complex stuff.  It would be nice to add lyrics and search later, though.
-
-hiv -- image viewer
-~~~~~~~~~~~~~~~~~~~
-JPG, PNG, first frame of GIF.  Zoom.  Going through adjacent files in directory
-using cursor keys.  Possibly a dialog with image metadata.
-
 hfm -- file manager
 ~~~~~~~~~~~~~~~~~~~
 All we need to achieve here is replace Midnight Commander, which besides the

go.mod

@@ -1,14 +1,26 @@
 module janouch.name/haven
 
-go 1.14
+go 1.17
 
 require (
 	github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802
-	github.com/alecthomas/chroma v0.8.1 // indirect
+	github.com/bytesparadise/libasciidoc v0.7.1-0.20221008082129-967103fe8df6
-	github.com/bytesparadise/libasciidoc v0.6.0
-	github.com/dlclark/regexp2 v1.2.1 // indirect
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0
-	github.com/nxadm/tail v1.4.5 // indirect
-	github.com/onsi/ginkgo v1.14.1 // indirect
 	golang.org/x/image v0.0.0-20190802002840-cff245a6509b
 )
+
+require github.com/sirupsen/logrus v1.8.1 // indirect
+
+require (
+	github.com/alecthomas/chroma/v2 v2.3.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dlclark/regexp2 v1.4.0 // indirect
+	github.com/kr/pretty v0.1.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	golang.org/x/net v0.0.0-20211015210444-4f30a5c0130f // indirect
+	golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9 // indirect
+	golang.org/x/text v0.3.7 // indirect
+	golang.org/x/tools v0.1.9 // indirect
+	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+)

go.sum

@@ -14,18 +14,12 @@ dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802 h1:1BDTz0u9nC3//pOCMdNH+CiXJVYJh5UQNCOBG7jbELc=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/DataDog/gostackparse v0.5.0/go.mod h1:lTfqcJKqS9KnXQGnyQMCugq3u1FP6UZMfWR0aitKFMM=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
-github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38 h1:smF2tmSOzy2Mm+0dGI2AIUHY+w0BUc+4tn40djz7+6U=
+github.com/alecthomas/chroma/v2 v2.3.0 h1:83xfxrnjv8eK+Cf8qZDzNo3PPF9IbTWHs7z28GY6D0U=
-github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38/go.mod h1:r7bzyVFMNntcxPZXK3/+KdruV1H5KSlyVY0gc+NgInI=
+github.com/alecthomas/chroma/v2 v2.3.0/go.mod h1:mZxeWZlxP2Dy+/8cBob2PYd8O2DwNAzave5AY7A2eQw=
-github.com/alecthomas/chroma v0.7.1/go.mod h1:gHw09mkX1Qp80JlYbmN9L3+4R5o6DJJ3GRShh+AICNc=
+github.com/alecthomas/repr v0.1.0 h1:ENn2e1+J3k09gyj2shc0dHr/yjaWSHRlrJ4DPMevDqE=
-github.com/alecthomas/chroma v0.8.1 h1:ym20sbvyC6RXz45u4qDglcgr8E313oPROshcuCHqiEE=
+github.com/alecthomas/repr v0.1.0/go.mod h1:2kn6fqh/zIyPLmm3ugklbEi5hg5wS435eygvNfaDQL8=
-github.com/alecthomas/chroma v0.8.1/go.mod h1:sko8vR34/90zvl5QdcUdvzL3J8NKjAUx9va9jPuFNoM=
-github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721 h1:JHZL0hZKJ1VENNfmXvHbgYlbUOvpzYzvy2aZU5gXVeo=
-github.com/alecthomas/colour v0.0.0-20160524082231-60882d9e2721/go.mod h1:QO9JBoKquHd+jz9nshCh40fOfO+JzsoXy8qTHF68zU0=
-github.com/alecthomas/kong v0.2.1-0.20190708041108-0548c6b1afae/go.mod h1:+inYUSluD+p4L8KdviBSgzcqEjUQOfC5fQDRFuc36lI=
-github.com/alecthomas/kong v0.2.4/go.mod h1:kQOmtJgV+Lb4aj+I2LEn40cbtawdWJ9Y8QLq+lElKxE=
-github.com/alecthomas/repr v0.0.0-20180818092828-117648cd9897 h1:p9Sln00KOTlrYkxI1zYWl1QLnEqAqEARBEYa8FQnQcY=
-github.com/alecthomas/repr v0.0.0-20180818092828-117648cd9897/go.mod h1:xTS7Pm1pD1mvyM075QCDSRqH6qRLXylzS24ZTpRiSzQ=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
@@ -35,9 +29,12 @@ github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
-github.com/bytesparadise/libasciidoc v0.6.0 h1:VPYw0epZXIBpNloE9mT9bsTLa6Km/K6ZYXGpwhSjerk=
+github.com/bytesparadise/libasciidoc v0.7.1-0.20221008082129-967103fe8df6 h1:H6OENzfxMVi4XJvFZWpbnttN5ncGnhC2qS15slyDdbw=
-github.com/bytesparadise/libasciidoc v0.6.0/go.mod h1:ifAy8QVs1/TRhsqtx/ORiNrHk0NowHih9P5rP9nZI7U=
+github.com/bytesparadise/libasciidoc v0.7.1-0.20221008082129-967103fe8df6/go.mod h1:Q2ZeBQ1fko5+NTUTs8rGu9gjTtbVaD6Qxg37GOPYdN4=
 github.com/cespare/xxhash v1.1.0/go.mod h1:XrSqR1VqqWfGrhpAt58auRo0WTKS1nRRg3ghfAqPWnc=
+github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
+github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk=
 github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
@@ -45,21 +42,16 @@ github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3Ee
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/danwakefield/fnmatch v0.0.0-20160403171240-cbb64ac3d964 h1:y5HC9v93H5EPKqaS1UYVg1uYah5Xf51mBfIoWehClUQ=
-github.com/danwakefield/fnmatch v0.0.0-20160403171240-cbb64ac3d964/go.mod h1:Xd9hchkHSWYkEqJwUGisez3G1QY8Ryz0sdWrLPMGjLk=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
 github.com/dgryski/go-sip13 v0.0.0-20181026042036-e10d5fee7954/go.mod h1:vAd38F8PWV+bWy6jNmig1y/TA+kYO4g3RSRF0IAv0no=
-github.com/dlclark/regexp2 v1.1.6/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
+github.com/dlclark/regexp2 v1.4.0 h1:F1rxgk7p4uKjwIQxBs9oAXe5CqrXlCduYEJvrF4u93E=
-github.com/dlclark/regexp2 v1.2.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
+github.com/dlclark/regexp2 v1.4.0/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
-github.com/dlclark/regexp2 v1.2.1 h1:Ff/S0snjr1oZHUNOkvA/gP6KUaMg5vDDl3Qnhjnwgm8=
-github.com/dlclark/regexp2 v1.2.1/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
+github.com/felixge/fgtrace v0.1.0/go.mod h1:VYPh/jE5zczuRiQge0AtcpNmcLhV/epE/wpfVYQALlU=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
@@ -67,6 +59,8 @@ github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
+github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 h1:p104kn46Q8WdvHunIJ9dAyjPVtrBPhSr3KT2yUst43I=
+github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/gogo/protobuf v1.2.1/go.mod h1:hp+jE20tsWTFYpLwKvXlhS1hjn+gTNwPg2I6zVXpSg4=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
@@ -84,19 +78,22 @@ github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:x
 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
 github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
-github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
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-github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
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@@ -264,8 +260,10 @@ golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU
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@@ -282,8 +280,11 @@ golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
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 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
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@@ -292,7 +293,8 @@ golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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@@ -300,7 +302,6 @@ golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5h
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 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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@@ -312,17 +313,25 @@ golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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@@ -344,8 +353,10 @@ golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtn
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@@ -377,27 +388,29 @@ google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ
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+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

hid/hid-gen-replies.sh

@@ -1,16 +0,0 @@
-#!/bin/sh
-LC_ALL=C exec awk '
-	/^[0-9]+ *(ERR|RPL)_[A-Z]+ *".*"$/ {
-		match($0, /".*"/);
-		ids[$1] = $2;
-		texts[$2] = substr($0, RSTART, RLENGTH);
-	}
-	END {
-		print "package " ENVIRON["GOPACKAGE"] "\n\nconst ("
-		for (i in ids)
-			printf("\t%s = %s\n", ids[i], i)
-		print ")\n\nvar defaultReplies = map[int]string{"
-		for (i in ids)
-			print "\t" ids[i] ": " texts[ids[i]] ","
-		print "}"
-	}'

hid/hid-replies

@@ -1,87 +0,0 @@
-1 RPL_WELCOME ":Welcome to the Internet Relay Network %s!%s@%s"
-2 RPL_YOURHOST ":Your host is %s, running version %s"
-3 RPL_CREATED ":This server was created %s"
-4 RPL_MYINFO "%s %s %s %s"
-5 RPL_ISUPPORT "%s :are supported by this server"
-211 RPL_STATSLINKINFO "%s %d %d %d %d %d %d"
-212 RPL_STATSCOMMANDS "%s %d %d %d"
-219 RPL_ENDOFSTATS "%c :End of STATS report"
-221 RPL_UMODEIS "+%s"
-242 RPL_STATSUPTIME ":Server Up %d days %d:%02d:%02d"
-251 RPL_LUSERCLIENT ":There are %d users and %d services on %d servers"
-252 RPL_LUSEROP "%d :operator(s) online"
-253 RPL_LUSERUNKNOWN "%d :unknown connection(s)"
-254 RPL_LUSERCHANNELS "%d :channels formed"
-255 RPL_LUSERME ":I have %d clients and %d servers"
-301 RPL_AWAY "%s :%s"
-302 RPL_USERHOST ":%s"
-303 RPL_ISON ":%s"
-305 RPL_UNAWAY ":You are no longer marked as being away"
-306 RPL_NOWAWAY ":You have been marked as being away"
-311 RPL_WHOISUSER "%s %s %s * :%s"
-312 RPL_WHOISSERVER "%s %s :%s"
-313 RPL_WHOISOPERATOR "%s :is an IRC operator"
-314 RPL_WHOWASUSER "%s %s %s * :%s"
-315 RPL_ENDOFWHO "%s :End of WHO list"
-317 RPL_WHOISIDLE "%s %d :seconds idle"
-318 RPL_ENDOFWHOIS "%s :End of WHOIS list"
-319 RPL_WHOISCHANNELS "%s :%s"
-322 RPL_LIST "%s %d :%s"
-323 RPL_LISTEND ":End of LIST"
-324 RPL_CHANNELMODEIS "%s +%s"
-329 RPL_CREATIONTIME "%s %d"
-331 RPL_NOTOPIC "%s :No topic is set"
-332 RPL_TOPIC "%s :%s"
-333 RPL_TOPICWHOTIME "%s %s %d"
-341 RPL_INVITING "%s %s"
-346 RPL_INVITELIST "%s %s"
-347 RPL_ENDOFINVITELIST "%s :End of channel invite list"
-348 RPL_EXCEPTLIST "%s %s"
-349 RPL_ENDOFEXCEPTLIST "%s :End of channel exception list"
-351 RPL_VERSION "%s.%d %s :%s"
-352 RPL_WHOREPLY "%s %s %s %s %s %s :%d %s"
-353 RPL_NAMREPLY "%c %s :%s"
-364 RPL_LINKS "%s %s :%d %s"
-365 RPL_ENDOFLINKS "%s :End of LINKS list"
-366 RPL_ENDOFNAMES "%s :End of NAMES list"
-367 RPL_BANLIST "%s %s"
-368 RPL_ENDOFBANLIST "%s :End of channel ban list"
-369 RPL_ENDOFWHOWAS "%s :End of WHOWAS"
-372 RPL_MOTD ":- %s"
-375 RPL_MOTDSTART ":- %s Message of the day - "
-376 RPL_ENDOFMOTD ":End of MOTD command"
-391 RPL_TIME "%s :%s"
-401 ERR_NOSUCHNICK "%s :No such nick/channel"
-402 ERR_NOSUCHSERVER "%s :No such server"
-403 ERR_NOSUCHCHANNEL "%s :No such channel"
-404 ERR_CANNOTSENDTOCHAN "%s :Cannot send to channel"
-406 ERR_WASNOSUCHNICK "%s :There was no such nickname"
-409 ERR_NOORIGIN ":No origin specified"
-410 ERR_INVALIDCAPCMD "%s :%s"
-411 ERR_NORECIPIENT ":No recipient given (%s)"
-412 ERR_NOTEXTTOSEND ":No text to send"
-421 ERR_UNKNOWNCOMMAND "%s: Unknown command"
-422 ERR_NOMOTD ":MOTD File is missing"
-423 ERR_NOADMININFO "%s :No administrative info available"
-431 ERR_NONICKNAMEGIVEN ":No nickname given"
-432 ERR_ERRONEOUSNICKNAME "%s :Erroneous nickname"
-433 ERR_NICKNAMEINUSE "%s :Nickname is already in use"
-441 ERR_USERNOTINCHANNEL "%s %s :They aren't on that channel"
-442 ERR_NOTONCHANNEL "%s :You're not on that channel"
-443 ERR_USERONCHANNEL "%s %s :is already on channel"
-445 ERR_SUMMONDISABLED ":SUMMON has been disabled"
-446 ERR_USERSDISABLED ":USERS has been disabled"
-451 ERR_NOTREGISTERED ":You have not registered"
-461 ERR_NEEDMOREPARAMS "%s :Not enough parameters"
-462 ERR_ALREADYREGISTERED ":Unauthorized command (already registered)"
-467 ERR_KEYSET "%s :Channel key already set"
-471 ERR_CHANNELISFULL "%s :Cannot join channel (+l)"
-472 ERR_UNKNOWNMODE "%c :is unknown mode char to me for %s"
-473 ERR_INVITEONLYCHAN "%s :Cannot join channel (+i)"
-474 ERR_BANNEDFROMCHAN "%s :Cannot join channel (+b)"
-475 ERR_BADCHANNELKEY "%s :Cannot join channel (+k)"
-476 ERR_BADCHANMASK "%s :Bad Channel Mask"
-481 ERR_NOPRIVILEGES ":Permission Denied- You're not an IRC operator"
-482 ERR_CHANOPRIVSNEEDED "%s :You're not channel operator"
-501 ERR_UMODEUNKNOWNFLAG ":Unknown MODE flag"
-502 ERR_USERSDONTMATCH ":Cannot change mode for other users"

hid/main_test.go

@@ -1,168 +0,0 @@
-//
-// Copyright (c) 2015 - 2018, Přemysl Eric Janouch <p@janouch.name>
-//
-// Permission to use, copy, modify, and/or distribute this software for any
-// purpose with or without fee is hereby granted.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
-// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
-// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
-// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-//
-
-package main
-
-import (
-	"crypto/tls"
-	"net"
-	"os"
-	"reflect"
-	"syscall"
-	"testing"
-)
-
-func TestSplitString(t *testing.T) {
-	var splitStringTests = []struct {
-		s, delims   string
-		ignoreEmpty bool
-		result      []string
-	}{
-		{",a,,bc", ",", false, []string{"", "a", "", "bc"}},
-		{",a,,bc", ",", true, []string{"a", "bc"}},
-		{"a,;bc,", ",;", false, []string{"a", "", "bc", ""}},
-		{"a,;bc,", ",;", true, []string{"a", "bc"}},
-		{"", ",", false, []string{""}},
-		{"", ",", true, nil},
-	}
-
-	for i, d := range splitStringTests {
-		got := splitString(d.s, d.delims, d.ignoreEmpty)
-		if !reflect.DeepEqual(got, d.result) {
-			t.Errorf("case %d: %v should be %v\n", i, got, d.result)
-		}
-	}
-}
-
-func socketpair() (*os.File, *os.File, error) {
-	pair, err := syscall.Socketpair(syscall.AF_UNIX, syscall.SOCK_STREAM, 0)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	// See go #24331, this makes 1.11 use the internal poller
-	// while there wasn't a way to achieve that before.
-	if err := syscall.SetNonblock(int(pair[0]), true); err != nil {
-		return nil, nil, err
-	}
-	if err := syscall.SetNonblock(int(pair[1]), true); err != nil {
-		return nil, nil, err
-	}
-
-	fa := os.NewFile(uintptr(pair[0]), "a")
-	if fa == nil {
-		return nil, nil, os.ErrInvalid
-	}
-
-	fb := os.NewFile(uintptr(pair[1]), "b")
-	if fb == nil {
-		fa.Close()
-		return nil, nil, os.ErrInvalid
-	}
-
-	return fa, fb, nil
-}
-
-func TestDetectTLS(t *testing.T) {
-	detectTLSFromFunc := func(t *testing.T, writer func(net.Conn)) bool {
-		// net.Pipe doesn't use file descriptors, we need a socketpair.
-		sockA, sockB, err := socketpair()
-		if err != nil {
-			t.Fatal(err)
-		}
-		defer sockA.Close()
-		defer sockB.Close()
-
-		fcB, err := net.FileConn(sockB)
-		if err != nil {
-			t.Fatal(err)
-		}
-		go writer(fcB)
-
-		fcA, err := net.FileConn(sockA)
-		if err != nil {
-			t.Fatal(err)
-		}
-		sc, err := fcA.(syscall.Conn).SyscallConn()
-		if err != nil {
-			t.Fatal(err)
-		}
-		return detectTLS(sc)
-	}
-
-	t.Run("SSL_2.0", func(t *testing.T) {
-		if !detectTLSFromFunc(t, func(fc net.Conn) {
-			// The obsolete, useless, unsupported SSL 2.0 record format.
-			_, _ = fc.Write([]byte{0x80, 0x01, 0x01})
-		}) {
-			t.Error("could not detect SSL")
-		}
-	})
-	t.Run("crypto_tls", func(t *testing.T) {
-		if !detectTLSFromFunc(t, func(fc net.Conn) {
-			conn := tls.Client(fc, &tls.Config{InsecureSkipVerify: true})
-			_ = conn.Handshake()
-		}) {
-			t.Error("could not detect TLS")
-		}
-	})
-	t.Run("text", func(t *testing.T) {
-		if detectTLSFromFunc(t, func(fc net.Conn) {
-			_, _ = fc.Write([]byte("ПРЕВЕД"))
-		}) {
-			t.Error("detected UTF-8 as TLS")
-		}
-	})
-	t.Run("EOF", func(t *testing.T) {
-		type connCloseWriter interface {
-			net.Conn
-			CloseWrite() error
-		}
-		if detectTLSFromFunc(t, func(fc net.Conn) {
-			_ = fc.(connCloseWriter).CloseWrite()
-		}) {
-			t.Error("detected EOF as TLS")
-		}
-	})
-}
-
-func TestIRC(t *testing.T) {
-	msg := ircParseMessage(
-		`@first=a\:\s\r\n\\;2nd :srv hi there :good m8 :how are you?`)
-
-	if !reflect.DeepEqual(msg.tags, map[string]string{
-		"first": "a; \r\n\\",
-		"2nd":   "",
-	}) {
-		t.Error("tags parsed incorrectly")
-	}
-
-	if msg.nick != "srv" || msg.user != "" || msg.host != "" {
-		t.Error("server name parsed incorrectly")
-	}
-	if msg.command != "hi" {
-		t.Error("command name parsed incorrectly")
-	}
-	if !reflect.DeepEqual(msg.params,
-		[]string{"there", "good m8 :how are you?"}) {
-		t.Error("params parsed incorrectly")
-	}
-
-	if !ircEqual("[fag]^", "{FAG}~") {
-		t.Error("string case comparison not according to RFC 2812")
-	}
-
-	// TODO: More tests.
-}

hswc/main.go

@@ -0,0 +1,101 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"net/url"
+	"os"
+	"regexp"
+	"strings"
+	"sync"
+	"time"
+)
+
+var (
+	long           = regexp.MustCompile(`(.{72}\S*)\s+`)
+	file, requests *os.File
+	m              sync.Mutex
+)
+
+func wrap(s string) string {
+	return strings.ReplaceAll(long.ReplaceAllString(
+		strings.ReplaceAll(s, "\r", ""), "$1\n"), "\n", "\n ")
+}
+
+func handler(w http.ResponseWriter, r *http.Request) {
+	defer r.Body.Close()
+	if err := r.ParseForm(); err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+	text := r.FormValue("text")
+	if len(text) > 64<<10 {
+		w.WriteHeader(http.StatusBadRequest)
+		return
+	}
+
+	m.Lock()
+	defer m.Unlock()
+
+	j, _ := json.Marshal(struct {
+		URI     string
+		Headers http.Header
+		Form    url.Values
+	}{
+		URI:     r.RequestURI,
+		Headers: r.Header,
+		Form:    r.Form,
+	})
+
+	if s, err := file.Stat(); err != nil {
+		log.Fatalln(err)
+	} else if s.Size()+int64(len(text)) > 64<<20 {
+		w.WriteHeader(http.StatusInternalServerError)
+	} else if r.Form.Has("submit") {
+		// <input type="submit"> should not be named, and thus received.
+		//
+		// If this is not enough to filter out most spammers, consider also:
+		//  - Header: "Origin" should not be missing for POST.
+		//  - Header: "Accept" should not be "*/*".
+		//  - Header: "Accept-Language" and "Accept-Encoding" should be present.
+		//  - Form: _charset_ should not be kept verbatim,
+		//    seeing as Safari/Chromium/Firefox all pass UTF-8,
+		//    in accordance with HTML5.
+		w.WriteHeader(http.StatusTeapot)
+	} else {
+		fmt.Fprintf(file, "%s %s\n %s\n",
+			time.Now().Local().Format(time.RFC1123), r.RequestURI, wrap(text))
+		if err := file.Sync(); err != nil {
+			log.Fatalln(err)
+		}
+
+		// To help filter out spammers.
+		fmt.Fprintf(requests, "%s\n", j)
+		if err := requests.Sync(); err != nil {
+			log.Fatalln(err)
+		}
+
+		fmt.Fprintln(w, "Saved.")
+	}
+}
+
+func main() {
+	if len(os.Args) != 3 {
+		log.Fatalf("Usage: %s BIND DB\n", os.Args[0])
+	}
+
+	var err error
+	if file, err = os.OpenFile(os.Args[2],
+		os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644); err != nil {
+		log.Fatalln(err)
+	}
+	if requests, err = os.OpenFile(os.Args[2]+".requests",
+		os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644); err != nil {
+		log.Fatalln(err)
+	}
+
+	http.HandleFunc("/", handler)
+	log.Fatalln(http.ListenAndServe(os.Args[1], nil))
+}

hswg/README.adoc

@@ -0,0 +1,62 @@
+hswg: a static website generator
+================================
+
+hswg wraps libasciidoc to make it understand more syntax, namely
+two-line/underlined titles, and can be run either as a filter, or as a simple
+wiki-like site generator.
+
+Gitea/cgit AsciiDoc processor
+-----------------------------
+Wrap hswg in the following script to give it a few superpowers:
+
+```
+#!/bin/sh
+# Make this also work for cgit which, strangely enough, is willing to render
+# /anything/ via the /about route, only passing through image/* unchanged.
+if [ -z "$GITEA_PREFIX_SRC" ]; then
+    test "${1%.adoc}" != "$1" || exit 1
+    cgit_fixups='s/<div class="content">/<div>/'
+    export GITEA_PREFIX_SRC=. GITEA_PREFIX_RAW=.
+fi
+
+# libasciidoc can't be helped in other ways so far, adding support for:
+#  - the original 'italics' syntax
+#  - double-line headings (part of haven's hswg which invokes libasciidoc)
+#  - make links to other documents work, normally an attribute could be used
+perl -pe "s|'([-~/\\.\\w]+)'|_\$1_|g;" | hswg 2>/dev/null | \
+    perl -pe 's|(href=")([^/][^:]*?")|$1$ENV{GITEA_PREFIX_SRC}/$2|;' \
+        -e 's|(src=")([^/][^:]*?")|$1$ENV{GITEA_PREFIX_RAW}/$2|;' \
+        -e "$cgit_fixups"
+```
+
+Then, to set it up in Gitea, include the following snippet in your _app.ini_:
+
+```
+[markup.asciidoc]
+ENABLED         = true
+FILE_EXTENSIONS = .adoc,.asciidoc
+RENDER_COMMAND  = /usr/local/bin/hswg-gitea
+IS_INPUT_FILE   = false
+```
+
+Similarly for cgit, the following _cgitrc_ snippet might do the job:
+
+```
+about-filter=/usr/local/bin/hswg-gitea
+readme=:README.adoc
+```
+
+If parsing fails for some reason, the contents will be wrapped in HTML verbatim
+as plain text.
+
+Wiki mode
+---------
+The program will read a Go template for the index page from its standard input,
+and another template for rendered pages from the path given as its first
+argument.  The second argument specifies the output filename for the index page,
+and the last one is the document directory.
+
+Consult the source code for a list template variables.
+
+All pages will be initially rerendered on startup, and then the directory will
+be watched for changes in real time using the inotify API.

hswg/asciidoc.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"bytes"
+	"io"
+	"strings"
+	"unicode"
+	"unicode/utf8"
+)
+
+// isTitle returns the title level if the lines seem to form a title,
+// zero otherwise. Input lines may inclide trailing newlines.
+func isTitle(line1, line2 []byte) int {
+	// This is a very naïve method, we should target graphemes (thus at least
+	// NFC normalize the lines first) and account for wide characters.
+	diff := utf8.RuneCount(line1) - utf8.RuneCount(line2)
+	if len(line2) < 2 || diff < -1 || diff > 1 {
+		return 0
+	}
+
+	// "Don't be fooled by back-to-back delimited blocks."
+	// Still gets fooled by other things, though.
+	if bytes.IndexFunc(line1, func(r rune) bool {
+		return unicode.IsLetter(r) || unicode.IsNumber(r)
+	}) < 0 {
+		return 0
+	}
+
+	// The underline must be homogenous.
+	for _, r := range bytes.TrimRight(line2, "\r\n") {
+		if r != line2[0] {
+			return 0
+		}
+	}
+	return 1 + strings.IndexByte("=-~^+", line2[0])
+}
+
+func writeLine(w *io.PipeWriter, cur, next []byte) []byte {
+	if level := isTitle(cur, next); level > 0 {
+		w.Write(append(bytes.Repeat([]byte{'='}, level), ' '))
+		next = nil
+	}
+	w.Write(cur)
+	return next
+}
+
+// ConvertTitles converts AsciiDoc two-line (underlined) titles to single-line.
+func ConvertTitles(w *io.PipeWriter, input []byte) {
+	var last []byte
+	for _, cur := range bytes.SplitAfter(input, []byte{'\n'}) {
+		last = writeLine(w, last, cur)
+	}
+	writeLine(w, last, nil)
+}

hswg/main.go

@@ -4,6 +4,7 @@ package main
 
 import (
 	"bytes"
+	"encoding/binary"
 	"encoding/xml"
 	"fmt"
 	"html/template"
@@ -11,67 +12,22 @@ import (
 	"io/ioutil"
 	"log"
 	"os"
+	"os/signal"
 	"path/filepath"
 	"regexp"
 	"sort"
 	"strings"
+	"sync"
+	"syscall"
 	"time"
-	"unicode"
-	"unicode/utf8"
 
 	"github.com/bytesparadise/libasciidoc/pkg/configuration"
 	"github.com/bytesparadise/libasciidoc/pkg/parser"
-	"github.com/bytesparadise/libasciidoc/pkg/renderer"
 	"github.com/bytesparadise/libasciidoc/pkg/renderer/sgml/html5"
 	"github.com/bytesparadise/libasciidoc/pkg/types"
 	"github.com/bytesparadise/libasciidoc/pkg/validator"
 )
 
-// isTitle returns the title level if the lines seem to form a title,
-// zero otherwise. Input lines may inclide trailing newlines.
-func isTitle(line1, line2 []byte) int {
-	// This is a very naïve method, we should target graphemes (thus at least
-	// NFC normalize the lines first) and account for wide characters.
-	diff := utf8.RuneCount(line1) - utf8.RuneCount(line2)
-	if len(line2) < 2 || diff < -1 || diff > 1 {
-		return 0
-	}
-
-	// "Don't be fooled by back-to-back delimited blocks."
-	// Still gets fooled by other things, though.
-	if bytes.IndexFunc(line1, func(r rune) bool {
-		return unicode.IsLetter(r) || unicode.IsNumber(r)
-	}) < 0 {
-		return 0
-	}
-
-	// The underline must be homogenous.
-	for _, r := range bytes.TrimRight(line2, "\r\n") {
-		if r != line2[0] {
-			return 0
-		}
-	}
-	return 1 + strings.IndexByte("=-~^+", line2[0])
-}
-
-func writeLine(w *io.PipeWriter, cur, next []byte) []byte {
-	if level := isTitle(cur, next); level > 0 {
-		w.Write(append(bytes.Repeat([]byte{'='}, level), ' '))
-		next = nil
-	}
-	w.Write(cur)
-	return next
-}
-
-// ConvertTitles converts AsciiDoc two-line (underlined) titles to single-line.
-func ConvertTitles(w *io.PipeWriter, input []byte) {
-	var last []byte
-	for _, cur := range bytes.SplitAfter(input, []byte{'\n'}) {
-		last = writeLine(w, last, cur)
-	}
-	writeLine(w, last, nil)
-}
-
 // Metadata contains select metadata about a rendered document.
 type Metadata struct {
 	types.Metadata
@@ -85,9 +41,28 @@ type Metadata struct {
 // be linked anywhere else.
 func (m *Metadata) IsDraft() bool { return m.Attributes.Has("draft") }
 
+// Attr is a shortcut for retrieving document attributes by name.
+func (m *Metadata) Attr(name string) string {
+	return m.Attributes.GetAsStringWithDefault(name, "")
+}
+
+// AttrList is similar to Attr, but splits the result at commas,
+// and trims whitespace around array elements.
+func (m *Metadata) AttrList(name string) []string {
+	if !m.Attributes.Has(name) {
+		return nil
+	}
+
+	res := strings.Split(m.Attr(name), ",")
+	for i := range res {
+		res[i] = strings.TrimSpace(res[i])
+	}
+	return res
+}
+
 // Render converts an io.Reader with an AsciiDoc document to HTML. So long as
 // the file could be read at all, it will always return a non-empty document.
-func Render(r io.Reader, config configuration.Configuration) (
+func Render(r io.Reader, config *configuration.Configuration) (
 	html *bytes.Buffer, meta Metadata, err error) {
 	html = bytes.NewBuffer(nil)
 
@@ -105,17 +80,18 @@ func Render(r io.Reader, config configuration.Configuration) (
 	// io.Copy(os.Stdout, pr)
 	// return
 
-	var doc types.Document
+	var doc *types.Document
 	if doc, err = parser.ParseDocument(pr, config); err == nil {
-		problems, err := validator.Validate(&doc)
+		doctype := config.Attributes.GetAsStringWithDefault(
-		if err != nil {
+			types.AttrDocType, "article")
-			fmt.Fprintln(os.Stderr, err)
+		problems, verr := validator.Validate(doc, doctype)
+		if verr != nil {
+			fmt.Fprintln(os.Stderr, verr)
 		}
 		for _, problem := range problems {
 			fmt.Fprintln(os.Stderr, problem.Message)
 		}
-		ctx := renderer.NewContext(doc, config)
+		meta.Metadata, err = html5.Render(doc, config, html)
-		meta.Metadata, err = html5.Render(ctx, doc, html)
 	}
 	if err != nil {
 		// Fallback: output all the text sanitized for direct inclusion.
@@ -128,35 +104,44 @@ func Render(r io.Reader, config configuration.Configuration) (
 		}
 		_, _ = html.WriteString("</pre>")
 	}
-	meta.Attributes = doc.Attributes
+	meta.Attributes = config.Attributes
 	return
 }
 
 // Entry contains all context information about a single page.
 type Entry struct {
-	Metadata                      // metadata
+	Metadata                        // metadata
-	PathSource      string        // path to source AsciiDoc
+	PathSource      string          // path to source AsciiDoc
-	PathDestination string        // path to destination HTML
+	PathDestination string          // path to destination HTML
-	mtime           time.Time     // modification time
+	mtime           time.Time       // modification time
-	Content         template.HTML // inner document with expanded LinkWords
+	raw             []byte          // raw inner document
-	backlinks       []string      // what documents link back here
+	Content         template.HTML   // inner document with expanded LinkWords
+	backlinks       map[string]bool // what documents link back here
 	Backlinks       []template.HTML
 }
 
 // Published returns the date when the entry was published, or nil if unknown.
 func (e *Entry) Published() *time.Time {
-	if d, _, err := e.Attributes.GetAsString("date"); err != nil {
+	if d, ok := e.Attributes.GetAsString("date"); !ok {
 		return nil
 	} else if t, err := time.Parse(time.RFC3339, d); err == nil {
 		return &t
 	} else if t, err := time.Parse("2006-01-02", d); err == nil {
 		return &t
 	} else {
+		log.Printf("%s: date: %s\n", e.PathSource, err)
 		return nil
 	}
 }
 
-var extRE = regexp.MustCompile(`\.[^/.]*$`)
+var (
+	globs = []string{"*.adoc", "*.asciidoc"}
+	extRE = regexp.MustCompile(`\.[^/.]*$`)
+)
+
+func pathToName(path string) string {
+	return stripExtension(filepath.Base(path))
+}
 
 func stripExtension(path string) string {
 	return extRE.ReplaceAllString(path, "")
@@ -171,7 +156,8 @@ func resultPath(path string) string {
 
 func makeLink(m *map[string]*Entry, name string) string {
 	e := (*m)[name]
-	return fmt.Sprintf("<a href='%s'>%s</a>", e.PathDestination, name)
+	return fmt.Sprintf("<a href='%s'>%s</a>",
+		filepath.Clean(e.PathDestination), name)
 }
 
 var linkWordRE = regexp.MustCompile(`\b\p{Lu}\p{L}*\b`)
@@ -180,132 +166,99 @@ func expand(m *map[string]*Entry, name string, chunk []byte) []byte {
 	return linkWordRE.ReplaceAllFunc(chunk, func(match []byte) []byte {
 		if link, ok := (*m)[string(match)]; ok && string(match) != name &&
 			!link.IsDraft() {
-			link.backlinks = append(link.backlinks, name)
+			link.backlinks[name] = true
 			return []byte(makeLink(m, string(match)))
 		}
 		return match
 	})
 }
 
-func singleFile() {
+var tagRE = regexp.MustCompile(`<[^<>]+>`)
-	html, meta, err := Render(os.Stdin, configuration.NewConfiguration())
+
+func renderEntry(name string, e *Entry) error {
+	f, err := os.Open(e.PathSource)
 	if err != nil {
-		log.Println(err)
+		return err
-	} else if meta.Title != "" {
-		_, _ = os.Stdout.WriteString("<h1>")
-		_ = xml.EscapeText(os.Stdout, []byte(meta.Title))
-		_, _ = os.Stdout.WriteString("</h1>\n")
 	}
-	_, _ = io.Copy(os.Stdout, html)
+
+	if i, err := f.Stat(); err != nil {
+		return err
+	} else {
+		e.mtime = i.ModTime()
+	}
+
+	var html *bytes.Buffer
+	if html, e.Metadata, err = Render(f, configuration.NewConfiguration(
+		configuration.WithFilename(e.PathSource),
+		configuration.WithLastUpdated(e.mtime),
+		configuration.WithAttribute("toc", "preamble"),
+		configuration.WithAttribute("toc-title", "<h2>Contents</h2>"),
+		configuration.WithAttribute("source-highlighter", "chroma"),
+	)); err != nil {
+		return err
+	}
+
+	// Every page needs to have a title.
+	if e.Title == "" {
+		e.Title = name
+	}
+
+	e.raw = html.Bytes()
+	return nil
 }
 
-func main() {
+func makeEntry(path string) *Entry {
-	if len(os.Args) < 2 {
+	return &Entry{
-		singleFile()
+		PathSource:      path,
-		return
+		PathDestination: resultPath(path),
-	}
-	if len(os.Args) < 3 {
-		log.Fatalf("usage: %s TEMPLATE GLOB...\n", os.Args[0])
 	}
+}
 
-	// Read the common page header.
+// loadEntries creates a map from document names to their page entries.
-	header, err := ioutil.ReadFile(os.Args[1])
+func loadEntries(dirname string) (map[string]*Entry, error) {
-	if err != nil {
-		log.Fatalln(err)
-	}
-
-	t, err := template.New("page").Parse(string(header))
-	if err != nil {
-		log.Fatalln(err)
-	}
-
-	// Create a map from document names to their page entries.
 	entries := map[string]*Entry{}
-	for _, glob := range os.Args[2:] {
+	for _, glob := range globs {
-		matches, err := filepath.Glob(glob)
+		matches, err := filepath.Glob(filepath.Join(dirname, glob))
 		if err != nil {
-			log.Fatalf("%s: %s\n", glob, err)
+			return nil, fmt.Errorf("%s: %s", dirname, err)
 		}
 		for _, path := range matches {
-			name := stripExtension(filepath.Base(path))
+			name := pathToName(path)
 			if conflict, ok := entries[name]; ok {
-				log.Fatalf("%s: conflicts with %s\n", name, conflict.PathSource)
+				return nil, fmt.Errorf("%s: conflicts with %s",
-			}
+					name, conflict.PathSource)
-			entries[name] = &Entry{
-				PathSource:      path,
-				PathDestination: resultPath(path),
 			}
+			entries[name] = makeEntry(path)
 		}
 	}
+	return entries, nil
+}
 
-	tagRE := regexp.MustCompile(`<[^<>]+>`)
+func writeEntry(e *Entry, t *template.Template,
-	for name, e := range entries {
+	entries *map[string]*Entry) error {
-		f, err := os.Open(e.PathSource)
+	f, err := os.Create(e.PathDestination)
-		if err != nil {
+	if err != nil {
-			log.Fatalln(err)
+		return err
-		}
-
-		if i, err := f.Stat(); err != nil {
-			log.Fatalln(err)
-		} else {
-			e.mtime = i.ModTime()
-		}
-
-		var html *bytes.Buffer
-		if html, e.Metadata, err = Render(f, configuration.NewConfiguration(
-			configuration.WithFilename(e.PathSource),
-			configuration.WithLastUpdated(e.mtime),
-		)); err != nil {
-			log.Fatalln(err)
-		}
-
-		// Every page needs to have a title.
-		if e.Title == "" {
-			e.Title = name
-		}
-
-		// Expand LinkWords anywhere between <tags>.
-		// We want something like the inverse of Regexp.ReplaceAllStringFunc.
-		raw, last, expanded := html.Bytes(), 0, bytes.NewBuffer(nil)
-		for _, where := range tagRE.FindAllIndex(raw, -1) {
-			_, _ = expanded.Write(expand(&entries, name, raw[last:where[0]]))
-			_, _ = expanded.Write(raw[where[0]:where[1]])
-			last = where[1]
-		}
-		_, _ = expanded.Write(expand(&entries, name, raw[last:]))
-		e.Content = template.HTML(expanded.String())
 	}
 
-	for _, e := range entries {
+	backlinks := []string{}
-		sort.Strings(e.backlinks)
+	for name := range e.backlinks {
-
+		backlinks = append(backlinks, name)
-		last, uniq := "", []string{}
+	}
-		for _, name := range e.backlinks {
+	sort.Strings(backlinks)
-			if name != last {
+	for _, name := range backlinks {
-				uniq = append(uniq, name)
+		e.Backlinks =
-			}
+			append(e.Backlinks, template.HTML(makeLink(entries, name)))
-			last = name
-		}
-		e.backlinks = uniq
 	}
 
-	for _, e := range entries {
+	return t.Execute(f, e)
-		f, err := os.Create(e.PathDestination)
+}
-		if err != nil {
-			log.Fatalln(err)
-		}
-		for _, name := range e.backlinks {
-			e.Backlinks = append(e.Backlinks,
-				template.HTML(makeLink(&entries, name)))
-		}
-		if err = t.Execute(f, e); err != nil {
-			log.Fatalln(err)
-		}
-	}
 
+func writeIndex(path string, t *template.Template,
+	entries *map[string]*Entry) error {
 	// Reorder entries reversely, primarily by date, secondarily by filename.
 	ordered := []*Entry{}
-	for _, e := range entries {
+	for _, e := range *entries {
 		ordered = append(ordered, e)
 	}
 
@@ -327,15 +280,250 @@ func main() {
 		return p2.Before(*p1)
 	})
 
-	// Execute a template from the standard input.
+	f, err := os.Create(path)
-	var input []byte
+	if err != nil {
-	if input, err = ioutil.ReadAll(os.Stdin); err != nil {
+		return err
+	}
+
+	// TODO(p): Splitting content to categories would be nice. Or tags.
+	return t.Execute(f, ordered)
+}
+
+func finalizeEntries(entries *map[string]*Entry, t *template.Template,
+	indexPath string, indexT *template.Template) {
+	// The initial render of a large amount of entries is resource-intensive.
+	var wg sync.WaitGroup
+	for name, e := range *entries {
+		e.backlinks = map[string]bool{}
+		if e.raw != nil {
+			continue
+		}
+
+		wg.Add(1)
+		go func(name string, e *Entry) {
+			defer wg.Done()
+			if err := renderEntry(name, e); err != nil {
+				log.Printf("%s: %s\n", name, err)
+			}
+		}(name, e)
+	}
+
+	wg.Wait()
+
+	for name, e := range *entries {
+		// Expand LinkWords anywhere between <tags>.
+		// We want something like the inverse of Regexp.ReplaceAllStringFunc.
+		raw, last, expanded := e.raw, 0, bytes.NewBuffer(nil)
+		for _, where := range tagRE.FindAllIndex(raw, -1) {
+			_, _ = expanded.Write(expand(entries, name, raw[last:where[0]]))
+			_, _ = expanded.Write(raw[where[0]:where[1]])
+			last = where[1]
+		}
+		_, _ = expanded.Write(expand(entries, name, raw[last:]))
+		e.Content = template.HTML(expanded.String())
+	}
+	for name, e := range *entries {
+		// Don't overwrite failed renders.
+		if e.raw == nil {
+			continue
+		}
+		if err := writeEntry(e, t, entries); err != nil {
+			log.Printf("%s: %s\n", name, err)
+		}
+	}
+	if err := writeIndex(indexPath, indexT, entries); err != nil {
+		log.Printf("%s: %s\n", indexPath, err)
+	}
+}
+
+type watchEvent struct {
+	path    string // the path of the target
+	present bool   // if not, the file has been removed
+}
+
+func dispatchEvents(dirname string, r io.Reader, ch chan<- *watchEvent) error {
+	var e syscall.InotifyEvent
+	for {
+		// FIXME(p): This has to respect the machine's endianness.
+		// Perhaps use the unsafe package.
+		err := binary.Read(r, binary.LittleEndian, &e)
+		if err == io.EOF {
+			return nil
+		}
+		if err != nil {
+			return err
+		}
+
+		base := make([]byte, e.Len)
+		if e.Len != 0 {
+			if n, err := r.Read(base); err != nil {
+				return err
+			} else if n < int(e.Len) {
+				return fmt.Errorf("short read")
+			}
+		}
+
+		switch {
+		case e.Mask&syscall.IN_IGNORED != 0:
+			return fmt.Errorf("watch removed by kernel")
+		case e.Mask&syscall.IN_Q_OVERFLOW != 0:
+			log.Println("inotify: queue overflowed")
+			ch <- nil
+			continue
+		case e.Len == 0:
+			continue
+		}
+
+		basename, interesting := string(base[:bytes.IndexByte(base, 0)]), false
+		for _, glob := range globs {
+			if matches, _ := filepath.Match(glob, basename); matches {
+				interesting = true
+			}
+		}
+		if !interesting {
+			continue
+		}
+
+		event := &watchEvent{path: filepath.Join(dirname, basename)}
+		if e.Mask&syscall.IN_MODIFY != 0 || e.Mask&syscall.IN_MOVED_TO != 0 ||
+			e.Mask&syscall.IN_CLOSE_WRITE != 0 {
+			event.present = true
+			ch <- event
+		}
+		if e.Mask&syscall.IN_DELETE != 0 || e.Mask&syscall.IN_MOVED_FROM != 0 {
+			event.present = false
+			ch <- event
+		}
+	}
+}
+
+func watchDirectory(dirname string) (<-chan *watchEvent, error) {
+	inotifyFD, err := syscall.InotifyInit1(0)
+	if err != nil {
+		return nil, err
+	}
+
+	// We're ignoring IN_CREATE, as it doesn't seem to be useful,
+	// and we're leaving out IN_MODIFY since VIM always triggers IN_CLOSE_WRITE,
+	// saving us from having to coalesce plentiful similar events.
+	_, err = syscall.InotifyAddWatch(inotifyFD, dirname, syscall.IN_ONLYDIR|
+		syscall.IN_MOVE|syscall.IN_DELETE|syscall.IN_CLOSE_WRITE)
+	if err != nil {
+		return nil, err
+	}
+
+	inotifyFile := os.NewFile(uintptr(inotifyFD), "inotify")
+	buf := make([]byte, syscall.SizeofInotifyEvent+syscall.PathMax+1)
+	ch := make(chan *watchEvent)
+	go func() {
+		// Trigger an initial rendering run.
+		ch <- nil
+
+		defer close(ch)
+		for {
+			n, err := inotifyFile.Read(buf)
+			if err != nil {
+				log.Println(err)
+				return
+			}
+			err = dispatchEvents(dirname, bytes.NewReader(buf[:n]), ch)
+			if err != nil {
+				log.Printf("inotify: %s\n", err)
+				return
+			}
+		}
+	}()
+	return ch, nil
+}
+
+var funcs = template.FuncMap{
+	"contains": func(needle string, haystack []string) bool {
+		for _, el := range haystack {
+			if el == needle {
+				return true
+			}
+		}
+		return false
+	},
+}
+
+func singleFile() {
+	html, meta, err := Render(os.Stdin, configuration.NewConfiguration())
+	if err != nil {
+		log.Println(err)
+	} else if meta.Title != "" {
+		_, _ = os.Stdout.WriteString("<h1>")
+		_ = xml.EscapeText(os.Stdout, []byte(meta.Title))
+		_, _ = os.Stdout.WriteString("</h1>\n")
+	}
+	_, _ = io.Copy(os.Stdout, html)
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		singleFile()
+		return
+	}
+	if len(os.Args) != 4 {
+		log.Fatalf("usage: %s TEMPLATE INDEX DIRECTORY\n", os.Args[0])
+	}
+
+	argTemplate, argIndex, argDirectory := os.Args[1], os.Args[2], os.Args[3]
+
+	// Read a template for entries.
+	header, err := ioutil.ReadFile(argTemplate)
+	if err != nil {
+		log.Fatalln(err)
+	}
+	tmplEntry, err := template.New("entry").Funcs(funcs).Parse(string(header))
+	if err != nil {
 		log.Fatalln(err)
 	}
 
-	// TODO(p): Splitting content to categories would be nice.
+	// Read a template for the index from the standard input.
-	t, err = template.New("-").Parse(string(input))
+	index, err := ioutil.ReadAll(os.Stdin)
-	if err = t.Execute(os.Stdout, ordered); err != nil {
+	if err != nil {
 		log.Fatalln(err)
 	}
+	tmplIndex, err := template.New("index").Funcs(funcs).Parse(string(index))
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	// Re-render as needed, avoid having to trigger anything manually.
+	var entries map[string]*Entry
+	directoryWatch, err := watchDirectory(argDirectory)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	signals := make(chan os.Signal, 1)
+	signal.Notify(signals, syscall.SIGINT, syscall.SIGHUP, syscall.SIGTERM)
+	for {
+		select {
+		case <-signals:
+			os.Exit(0)
+		case event, ok := <-directoryWatch:
+			if !ok {
+				os.Exit(1)
+			}
+
+			if event == nil {
+				log.Println("reloading all files")
+				if entries, err = loadEntries(argDirectory); err != nil {
+					log.Println(err)
+				}
+			} else if event.present {
+				log.Printf("updating %s\n", event.path)
+				entries[pathToName(event.path)] = makeEntry(event.path)
+			} else {
+				log.Printf("removing %s\n", event.path)
+				delete(entries, pathToName(event.path))
+				os.Remove(resultPath(event.path))
+			}
+
+			finalizeEntries(&entries, tmplEntry, argIndex, tmplIndex)
+			log.Println("done")
+		}
+	}
 }

prototypes/xgb-image.go

@@ -2,17 +2,19 @@ package main
 
 import (
 	"encoding/binary"
-	"github.com/BurntSushi/xgb"
-	"github.com/BurntSushi/xgb/render"
-	"github.com/BurntSushi/xgb/shm"
-	"github.com/BurntSushi/xgb/xproto"
 	"log"
 	"os"
 	"reflect"
 	"time"
 	"unsafe"
 
+	"github.com/BurntSushi/xgb"
+	"github.com/BurntSushi/xgb/render"
+	"github.com/BurntSushi/xgb/shm"
+	"github.com/BurntSushi/xgb/xproto"
+
 	"image"
+	"image/color"
 	_ "image/gif"
 	_ "image/jpeg"
 	_ "image/png"
@@ -25,6 +27,47 @@ import "C"
 func F64ToFixed(f float64) render.Fixed { return render.Fixed(f * 65536) }
 func FixedToF64(f render.Fixed) float64 { return float64(f) / 65536 }
 
+var formats = map[byte]struct {
+	format    render.Directformat
+	transform func(color.Color) uint32
+}{
+	32: {
+		format: render.Directformat{
+			RedShift:   16,
+			RedMask:    0xff,
+			GreenShift: 8,
+			GreenMask:  0xff,
+			BlueShift:  0,
+			BlueMask:   0xff,
+			AlphaShift: 24,
+			AlphaMask:  0xff,
+		},
+		transform: func(color color.Color) uint32 {
+			r, g, b, a := color.RGBA()
+			return (a>>8)<<24 | (r>>8)<<16 | (g>>8)<<8 | (b >> 8)
+		},
+	},
+	30: {
+		/*
+			// Alpha makes compositing unbearably slow.
+			AlphaShift: 30,
+			AlphaMask:  0x3,
+		*/
+		format: render.Directformat{
+			RedShift:   20,
+			RedMask:    0x3ff,
+			GreenShift: 10,
+			GreenMask:  0x3ff,
+			BlueShift:  0,
+			BlueMask:   0x3ff,
+		},
+		transform: func(color color.Color) uint32 {
+			r, g, b, a := color.RGBA()
+			return (a>>14)<<30 | (r>>6)<<20 | (g>>6)<<10 | (b >> 6)
+		},
+	},
+}
+
 func main() {
 	/*
 		pf, err := os.Create("pprof.out")
@@ -62,18 +105,37 @@ func main() {
 	screen := setup.DefaultScreen(X)
 
 	visual, depth := screen.RootVisual, screen.RootDepth
-	// TODO: We should check that we find it, though we don't /need/ alpha here,
+
-	// it's just a minor improvement--affects the backpixel value.
+	// Only go for 10-bit when the picture can make use of that range.
+	prefer30 := false
+	switch img.(type) {
+	case *image.Gray16, *image.RGBA64, *image.NRGBA64:
+		prefer30 = true
+	}
+
+	// XXX: We don't /need/ alpha here, it's just a minor improvement--affects
+	// the backpixel value. (And we reject it in 30-bit depth anyway.)
+Depths:
 	for _, i := range screen.AllowedDepths {
 		for _, v := range i.Visuals {
-			// TODO: Could/should check other parameters.
+			// TODO: Could/should check other parameters, e.g., the RGB masks.
-			if i.Depth == 32 && v.Class == xproto.VisualClassTrueColor {
+			if v.Class != xproto.VisualClassTrueColor {
+				continue
+			}
+			if i.Depth == 32 || i.Depth == 30 && prefer30 {
 				visual, depth = v.VisualId, i.Depth
-				break
+				if !prefer30 || i.Depth == 30 {
+					break Depths
+				}
 			}
 		}
 	}
 
+	format, ok := formats[depth]
+	if !ok {
+		log.Fatalln("unsupported bit depth")
+	}
+
 	mid, err := xproto.NewColormapId(X)
 	if err != nil {
 		log.Fatalln(err)
@@ -91,7 +153,7 @@ func main() {
 	_ = xproto.CreateWindow(X, depth, wid, screen.Root,
 		0, 0, 500, 500, 0, xproto.WindowClassInputOutput,
 		visual, xproto.CwBackPixel|xproto.CwBorderPixel|xproto.CwEventMask|
-			xproto.CwColormap, []uint32{0x80808080, 0,
+			xproto.CwColormap, []uint32{format.transform(color.Alpha{0x80}), 0,
 			xproto.EventMaskStructureNotify | xproto.EventMaskExposure,
 			uint32(mid)})
 
@@ -131,7 +193,7 @@ func main() {
 	// setup.BitmapFormatScanline{Pad,Unit} and setup.BitmapFormatBitOrder
 	// don't interest us here since we're only using Z format pixmaps.
 	for _, pf := range setup.PixmapFormats {
-		if pf.Depth == 32 {
+		if pf.Depth == depth {
 			if pf.BitsPerPixel != 32 || pf.ScanlinePad != 32 {
 				log.Fatalln("unsuported X server")
 			}
@@ -142,28 +204,18 @@ func main() {
 	if err != nil {
 		log.Fatalln(err)
 	}
-	_ = xproto.CreatePixmap(X, 32, pixid, xproto.Drawable(screen.Root),
+	_ = xproto.CreatePixmap(X, depth, pixid, xproto.Drawable(screen.Root),
 		uint16(img.Bounds().Dx()), uint16(img.Bounds().Dy()))
 
 	var bgraFormat render.Pictformat
-	wanted := render.Directformat{
-		RedShift:   16,
-		RedMask:    0xff,
-		GreenShift: 8,
-		GreenMask:  0xff,
-		BlueShift:  0,
-		BlueMask:   0xff,
-		AlphaShift: 24,
-		AlphaMask:  0xff,
-	}
 	for _, pf := range pformats.Formats {
-		if pf.Depth == 32 && pf.Direct == wanted {
+		if pf.Depth == depth && pf.Direct == format.format {
 			bgraFormat = pf.Id
 			break
 		}
 	}
 	if bgraFormat == 0 {
-		log.Fatalln("ARGB format not found")
+		log.Fatalln("picture format not found")
 	}
 
 	// We could also look for the inverse pictformat.
@@ -201,14 +253,12 @@ func main() {
 		row := make([]byte, bounds.Dx()*4)
 		for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
 			for x := bounds.Min.X; x < bounds.Max.X; x++ {
-				r, g, b, a := img.At(x, y).RGBA()
+				encoding.PutUint32(row[x*4:], format.transform(img.At(x, y)))
-				encoding.PutUint32(row[x*4:],
-					(a>>8)<<24|(r>>8)<<16|(g>>8)<<8|(b>>8))
 			}
 			_ = xproto.PutImage(X, xproto.ImageFormatZPixmap,
 				xproto.Drawable(pixid), cid, uint16(bounds.Dx()), 1,
 				0, int16(y),
-				0, 32, row)
+				0, depth, row)
 		}
 	} else {
 		rep, err := shm.QueryVersion(X).Reply()
@@ -241,9 +291,7 @@ func main() {
 		for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
 			row := data[y*bounds.Dx()*4:]
 			for x := bounds.Min.X; x < bounds.Max.X; x++ {
-				r, g, b, a := img.At(x, y).RGBA()
+				encoding.PutUint32(row[x*4:], format.transform(img.At(x, y)))
-				encoding.PutUint32(row[x*4:],
-					(a>>8)<<24|(r>>8)<<16|(g>>8)<<8|(b>>8))
 			}
 		}
 
@@ -261,7 +309,7 @@ func main() {
 		_ = shm.PutImage(X, xproto.Drawable(pixid), cid,
 			uint16(bounds.Dx()), uint16(bounds.Dy()), 0, 0,
 			uint16(bounds.Dx()), uint16(bounds.Dy()), 0, 0,
-			32, xproto.ImageFormatZPixmap,
+			depth, xproto.ImageFormatZPixmap,
 			0 /* SendEvent */, segid, 0 /* Offset */)
 	}