Add JSON and JSON lines list formats (#52)

CHANGELOG.md

@@ -4,6 +4,16 @@ All notable changes to this project will be documented in this file.
 
 ## Unreleased
 
+### Added
+
+* Use JSON formats with `zk list` for easy post-processing:
+    * `--format json` prints a plain JSON array.
+    * `--format jsonl` prints one JSON note object per line, according to [JSON Lines](https://jsonlines.org/).
+* The new `{{json}}` template helper serializes any template context variable into a valid JSON value, e.g.:
+    * `{{json title}}` prints with quotes `"An interesting note"`
+    * `{{json .}}` serializes the full template context as a JSON object.
+* Use `--header` and `--footer` options with `zk list` to print arbitrary text at the start or end of the list.
+
 ### Fixed
 
 * [#16](https://github.com/mickael-menu/zk/issues/16) Links with section anchors, e.g. `[[filename#section]]`.

docs/template.md

@@ -99,3 +99,17 @@ The `{{style}}` helper is mostly useful when formatting content for the command-
 {{#style 'underline'}}Another text{{/style}}
 ```
 
+### JSON helper
+
+The `{{json}}` helper serializes its argument to a JSON value. This is useful to generate valid JSON objects, for example:
+
+```
+{ "title": {{json title}}, "tags": {{json tags}} }
+->
+{ "title": "A \"quoted\" title", "tags": ["example", "json"] }
+```
+
+**Warning**: The template parser trips on `}}}`, so make sure to add an extra space before the third `}`.
+
+You can serialize the whole template context as a JSON object with `{{json .}}`, which is how `zk list --format json` produces its output.
+

go.mod

@@ -6,32 +6,33 @@ replace github.com/tliron/glsp => github.com/mickael-menu/glsp v0.1.0
 
 require (
 	github.com/AlecAivazis/survey/v2 v2.2.12
-	github.com/alecthomas/kong v0.2.16-0.20210209082517-405b2f4fd9a4
+	github.com/alecthomas/kong v0.2.18-0.20210616130643-2d879d20374b
 	github.com/aymerick/raymond v2.0.2+incompatible
-	github.com/fatih/color v1.10.0
+	github.com/fatih/color v1.12.0
 	github.com/go-testfixtures/testfixtures/v3 v3.4.1
 	github.com/google/go-cmp v0.5.2
 	github.com/gosimple/slug v1.9.0
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
 	github.com/lestrrat-go/strftime v1.0.4
-	github.com/mattn/go-isatty v0.0.12
+	github.com/mattn/go-isatty v0.0.13
-	github.com/mattn/go-sqlite3 v1.14.6
+	github.com/mattn/go-runewidth v0.0.13 // indirect
+	github.com/mattn/go-sqlite3 v1.14.7
 	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
 	github.com/mickael-menu/pretty v0.2.3
 	github.com/mvdan/xurls v1.1.0
-	github.com/pelletier/go-toml v1.8.1
+	github.com/pelletier/go-toml v1.9.3
 	github.com/relvacode/iso8601 v1.1.0
 	github.com/rogpeppe/go-internal v1.6.2 // indirect
 	github.com/rvflash/elapsed v0.2.0
-	github.com/schollz/progressbar/v3 v3.7.4
+	github.com/schollz/progressbar/v3 v3.8.1
+	github.com/sourcegraph/jsonrpc2 v0.1.0 // indirect
 	github.com/tj/go-naturaldate v1.3.0
-	github.com/tliron/glsp v0.0.0-20210308190902-c7ec7df19257
+	github.com/tliron/glsp v0.0.0-20210423182918-98d1a22f3ee6
-	github.com/tliron/kutil v0.1.22
+	github.com/tliron/kutil v0.1.39
-	github.com/yuin/goldmark v1.3.2
+	github.com/yuin/goldmark v1.3.8
 	github.com/yuin/goldmark-meta v1.0.0
-	golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b // indirect
+	golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e // indirect
-	golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7 // indirect
+	golang.org/x/sys v0.0.0-20210616094352-59db8d763f22 // indirect
-	golang.org/x/term v0.0.0-20210422114643-f5beecf764ed // indirect
+	golang.org/x/term v0.0.0-20210615171337-6886f2dfbf5b // indirect
-	golang.org/x/text v0.3.6 // indirect
 	gopkg.in/djherbis/times.v1 v1.2.0
 )

go.sum

@@ -23,13 +23,12 @@ cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiy
 cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/AlecAivazis/survey/v2 v2.2.7 h1:5NbxkF4RSKmpywYdcRgUmos1o+roJY8duCLZXbVjoig=
-github.com/AlecAivazis/survey/v2 v2.2.7/go.mod h1:9DYvHgXtiXm6nCn+jXnOXLKbH+Yo9u8fAS/SduGdoPk=
 github.com/AlecAivazis/survey/v2 v2.2.12 h1:5a07y93zA6SZ09gOa9wLVLznF5zTJMQ+pJ3cZK4IuO8=
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+github.com/Azure/go-autorest/autorest v0.11.12/go.mod h1:eipySxLmqSyC5s5k1CLupqet0PSENBEDP93LQ9a8QYw=
 github.com/Azure/go-autorest/autorest/adal v0.9.0/go.mod h1:/c022QCutn2P7uY+/oQWWNcK9YU+MH96NgK+jErpbcg=
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 github.com/Azure/go-autorest/autorest/date v0.3.0/go.mod h1:BI0uouVdmngYNUzGWeSYnokU+TrmwEsOqdt8Y6sso74=
@@ -41,6 +40,7 @@ github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/Microsoft/go-winio v0.4.14/go.mod h1:qXqCSQ3Xa7+6tgxaGTIe4Kpcdsi+P8jBhyzoq1bpyYA=
 github.com/NYTimes/gziphandler v0.0.0-20170623195520-56545f4a5d46/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
+github.com/NYTimes/gziphandler v1.1.1/go.mod h1:n/CVRwUEOgIxrgPvAQhUUr9oeUtvrhMomdKFjzJNB0c=
 github.com/Netflix/go-expect v0.0.0-20180615182759-c93bf25de8e8 h1:xzYJEypr/85nBpB11F9br+3HUrpgb+fcm5iADzXXYEw=
 github.com/Netflix/go-expect v0.0.0-20180615182759-c93bf25de8e8/go.mod h1:oX5x61PbNXchhh0oikYAH+4Pcfw5LKv21+Jnpr6r6Pc=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
@@ -49,8 +49,8 @@ github.com/PuerkitoBio/purell v1.0.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbt
 github.com/PuerkitoBio/purell v1.1.1/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
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 github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
-github.com/alecthomas/kong v0.2.16-0.20210209082517-405b2f4fd9a4 h1:TeW3HEkctVgQL2uQiHERcwxZkN9U4WQ+6pKEgOfhCt0=
+github.com/alecthomas/kong v0.2.18-0.20210616130643-2d879d20374b h1:u2cQGzIEefu+7cLR4wJifBB/DFhZzTQpQ+nBJXcJHY8=
-github.com/alecthomas/kong v0.2.16-0.20210209082517-405b2f4fd9a4/go.mod h1:kQOmtJgV+Lb4aj+I2LEn40cbtawdWJ9Y8QLq+lElKxE=
+github.com/alecthomas/kong v0.2.18-0.20210616130643-2d879d20374b/go.mod h1:ka3VZ8GZNPXv9Ov+j4YNLkI8mTuhXyr/0ktSlqIydQQ=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
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@@ -92,12 +92,14 @@ github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3Ee
 github.com/coreos/go-systemd v0.0.0-20180511133405-39ca1b05acc7/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 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 v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
-github.com/creack/pty v1.1.9 h1:uDmaGzcdjhF4i/plgjmEsriH11Y0o7RKapEf/LDaM3w=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
+github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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@@ -105,6 +107,7 @@ github.com/denisenkom/go-mssqldb v0.0.0-20191128021309-1d7a30a10f73 h1:OGNva6Whs
 github.com/denisenkom/go-mssqldb v0.0.0-20191128021309-1d7a30a10f73/go.mod h1:xbL0rPBG9cCiLr28tMa8zpbdarY27NDyej4t/EjAShU=
 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 v1.4.1-0.20201116162257-a2a8dda75c91/go.mod h1:2pZnwuY/m+8K6iRw6wQdMtk+rH5tNGR1i55kozfMjCc=
 github.com/docker/cli v0.0.0-20191017083524-a8ff7f821017/go.mod h1:JLrzqnKDaYBop7H2jaqPtU4hHvMKP+vjCwu2uszcLI8=
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@@ -113,6 +116,8 @@ github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5Xh
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+github.com/dop251/goja v0.0.0-20210614154742-14a1ffa82844/go.mod h1:R9ET47fwRVRPZnOGvHxxhuZcbrMCuiqOz3Rlrh4KSnk=
+github.com/dop251/goja_nodejs v0.0.0-20210225215109-d91c329300e7/go.mod h1:hn7BA7c8pLvoGndExHudxTDKZ84Pyvv+90pbBjbTz0Y=
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@@ -124,12 +129,14 @@ github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1m
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@@ -150,19 +157,28 @@ github.com/go-openapi/jsonreference v0.19.2/go.mod h1:jMjeRr2HHw6nAVajTXJ4eiUwoh
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@@ -190,6 +206,7 @@ github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvq
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@@ -200,6 +217,7 @@ github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -315,8 +333,10 @@ github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51 h1:Z9n2FFNU
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@@ -324,6 +344,8 @@ github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxv
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@@ -332,6 +354,7 @@ github.com/kr/pty v1.1.8/go.mod h1:O1sed60cT9XZ5uDucP5qwvh+TE3NnUj51EiZO/lmSfw=
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@@ -358,18 +381,19 @@ github.com/mattn/go-isatty v0.0.5/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hd
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@@ -385,10 +409,13 @@ github.com/mitchellh/go-homedir v1.0.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrk
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@@ -400,7 +427,6 @@ github.com/mvdan/xurls v1.1.0 h1:OpuDelGQ1R1ueQ6sSryzi6P+1RtBpfQHM8fJwlE45ww=
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@@ -419,8 +445,8 @@ github.com/opencontainers/go-digest v1.0.0/go.mod h1:0JzlMkj0TRzQZfJkVvzbP0HBR3I
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@@ -464,13 +490,14 @@ github.com/rs/xid v1.2.1/go.mod h1:+uKXf+4Djp6Md1KODXJxgGQPKngRmWyn10oCKFzNHOQ=
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@@ -481,11 +508,13 @@ github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPx
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@@ -509,15 +538,17 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
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@@ -528,8 +559,8 @@ github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2/go.mod h1:UETIi67q
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@@ -562,11 +593,11 @@ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8U
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@@ -597,6 +628,7 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
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@@ -628,7 +660,9 @@ golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -643,6 +677,7 @@ golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJ
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 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.4 h1:0YWbFKbhXG/wIiuHDSKpS0Iy7FSA+u45VtBMfQcFTTc=
 golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6 h1:aRYxNxv6iGQlyVaZmk6ZgYEDa+Jg18DxebPSrd6bg1M=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -713,6 +750,7 @@ golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxb
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20200416051211-89c76fbcd5d1/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20200630173020-3af7569d3a1e/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/time v0.0.0-20210220033141-f8bda1e9f3ba/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20181011042414-1f849cf54d09/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -757,7 +795,10 @@ golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb/go.mod h1:o4KQGtdN14AW+yjs
 golang.org/x/tools v0.0.0-20200501065659-ab2804fb9c9d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200505023115-26f46d2f7ef8/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200616133436-c1934b75d054/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
+golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20200916195026-c9a70fc28ce3/go.mod h1:z6u4i615ZeAfBE4XtMziQW1fSVJXACjjbWkB/mvPzlU=
+golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
 golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -830,8 +871,9 @@ gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLks
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
 gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/djherbis/times.v1 v1.2.0 h1:UCvDKl1L/fmBygl2Y7hubXCnY7t4Yj46ZrBFNUipFbM=
 gopkg.in/djherbis/times.v1 v1.2.0/go.mod h1:AQlg6unIsrsCEdQYhTzERy542dz6SFdQFZFv6mUY0P8=
@@ -860,6 +902,7 @@ gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gotest.tools v2.2.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 gotest.tools/v3 v3.0.2/go.mod h1:3SzNCllyD9/Y+b5r9JIKQ474KzkZyqLqEfYqMsX94Bk=
+gotest.tools/v3 v3.0.3/go.mod h1:Z7Lb0S5l+klDB31fvDQX8ss/FlKDxtlFlw3Oa8Ymbl8=
 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=
@@ -867,28 +910,41 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 k8s.io/api v0.20.4/go.mod h1:++lNL1AJMkDymriNniQsWRkMDzRaX2Y/POTUi8yvqYQ=
+k8s.io/api v0.21.1/go.mod h1:FstGROTmsSHBarKc8bylzXih8BLNYTiS3TZcsoEDg2s=
 k8s.io/apiextensions-apiserver v0.20.4/go.mod h1:Hzebis/9c6Io5yzHp24Vg4XOkTp1ViMwKP/6gmpsfA4=
+k8s.io/apiextensions-apiserver v0.21.1/go.mod h1:KESQFCGjqVcVsZ9g0xX5bacMjyX5emuWcS2arzdEouA=
 k8s.io/apimachinery v0.20.4/go.mod h1:WlLqWAHZGg07AeltaI0MV5uk1Omp8xaN0JGLY6gkRpU=
+k8s.io/apimachinery v0.21.1/go.mod h1:jbreFvJo3ov9rj7eWT7+sYiRx+qZuCYXwWT1bcDswPY=
 k8s.io/apiserver v0.20.4/go.mod h1:Mc80thBKOyy7tbvFtB4kJv1kbdD0eIH8k8vianJcbFM=
+k8s.io/apiserver v0.21.1/go.mod h1:nLLYZvMWn35glJ4/FZRhzLG/3MPxAaZTgV4FJZdr+tY=
 k8s.io/client-go v0.20.4/go.mod h1:LiMv25ND1gLUdBeYxBIwKpkSC5IsozMMmOOeSJboP+k=
+k8s.io/client-go v0.21.1/go.mod h1:/kEw4RgW+3xnBGzvp9IWxKSNA+lXn3A7AuH3gdOAzLs=
 k8s.io/code-generator v0.19.7/go.mod h1:lwEq3YnLYb/7uVXLorOJfxg+cUu2oihFhHZ0n9NIla0=
 k8s.io/code-generator v0.20.4/go.mod h1:UsqdF+VX4PU2g46NC2JRs4gc+IfrctnwHb76RNbWHJg=
+k8s.io/code-generator v0.21.1/go.mod h1:hUlps5+9QaTrKx+jiM4rmq7YmH8wPOIko64uZCHDh6Q=
 k8s.io/component-base v0.20.4/go.mod h1:t4p9EdiagbVCJKrQ1RsA5/V4rFQNDfRlevJajlGwgjI=
+k8s.io/component-base v0.21.1/go.mod h1:NgzFZ2qu4m1juby4TnrmpR8adRk6ka62YdH5DkIIyKA=
 k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/gengo v0.0.0-20200428234225-8167cfdcfc14/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
 k8s.io/gengo v0.0.0-20201113003025-83324d819ded/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
+k8s.io/gengo v0.0.0-20201214224949-b6c5ce23f027/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
 k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
 k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
 k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
 k8s.io/klog/v2 v2.6.0/go.mod h1:hy9LJ/NvuK+iVyP4Ehqva4HxZG/oXyIS3n3Jmire4Ec=
+k8s.io/klog/v2 v2.8.0/go.mod h1:hy9LJ/NvuK+iVyP4Ehqva4HxZG/oXyIS3n3Jmire4Ec=
+k8s.io/klog/v2 v2.9.0/go.mod h1:hy9LJ/NvuK+iVyP4Ehqva4HxZG/oXyIS3n3Jmire4Ec=
 k8s.io/kube-openapi v0.0.0-20200805222855-6aeccd4b50c6/go.mod h1:UuqjUnNftUyPE5H64/qeyjQoUZhGpeFDVdxjTeEVN2o=
 k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd/go.mod h1:WOJ3KddDSol4tAGcJo0Tvi+dK12EcqSLqcWsryKMpfM=
+k8s.io/kube-openapi v0.0.0-20210305001622-591a79e4bda7/go.mod h1:wXW5VT87nVfh/iLV8FpR2uDvrFyomxbtb1KivDbvPTE=
 k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
 sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.14/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
+sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.15/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
 sigs.k8s.io/structured-merge-diff/v4 v4.0.1/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
 sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
+sigs.k8s.io/structured-merge-diff/v4 v4.1.0/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
 sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
 sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=

internal/adapter/handlebars/handlebars.go

@@ -17,6 +17,7 @@ func Init(supportsUTF8 bool, logger util.Logger) {
 	helpers.RegisterConcat()
 	helpers.RegisterDate(logger)
 	helpers.RegisterJoin()
+	helpers.RegisterJSON(logger)
 	helpers.RegisterList(supportsUTF8)
 	helpers.RegisterPrepend(logger)
 	helpers.RegisterShell(logger)

internal/adapter/handlebars/handlebars_test.go

@@ -149,6 +149,28 @@ func TestJoinHelper(t *testing.T) {
 	test([]string{"Item 1", "Item 2", "Item 3"}, "Item 1-Item 2-Item 3")
 }
 
+type testJSONObject struct {
+	Foo     string
+	Missing string   `json:"missing,omitempty"`
+	List    []string `json:"stringList"`
+}
+
+func TestJSONHelper(t *testing.T) {
+	test := func(value interface{}, expected string) {
+		context := map[string]interface{}{"value": value}
+		testString(t, "{{json value}}", context, expected)
+	}
+
+	test(`foo"bar"`, `"foo\"bar\""`)
+	test([]string{"foo", "bar"}, `["foo","bar"]`)
+	test(map[string]string{"foo": "bar"}, `{"foo":"bar"}`)
+	test(map[string]string{"foo": "bar"}, `{"foo":"bar"}`)
+	test(testJSONObject{
+		Foo:  "baz",
+		List: []string{"foo", "bar"},
+	}, `{"Foo":"baz","stringList":["foo","bar"]}`)
+}
+
 func TestPrependHelper(t *testing.T) {
 	// inline
 	testString(t, "{{prepend '> ' 'A quote'}}", nil, "> A quote")

internal/adapter/handlebars/helpers/json.go

@@ -0,0 +1,22 @@
+package helpers
+
+import (
+	"encoding/json"
+
+	"github.com/aymerick/raymond"
+	"github.com/mickael-menu/zk/internal/util"
+	"github.com/mickael-menu/zk/internal/util/errors"
+)
+
+// RegisterJSON registers a {{json}} template helper which serializes its
+// parameter to a JSON value.
+func RegisterJSON(logger util.Logger) {
+	raymond.RegisterHelper("json", func(arg interface{}) string {
+		jsonBytes, err := json.Marshal(arg)
+		if err != nil {
+			logger.Err(errors.Wrapf(err, "%v: not a serializable argument for {{json}}", arg))
+			return ""
+		}
+		return string(jsonBytes)
+	})
+}

internal/cli/cmd/list.go

@@ -4,17 +4,18 @@ import (
 	"fmt"
 	"io"
 	"os"
-	"strings"
 
 	"github.com/mickael-menu/zk/internal/adapter/fzf"
 	"github.com/mickael-menu/zk/internal/cli"
 	"github.com/mickael-menu/zk/internal/util/errors"
-	strutil "github.com/mickael-menu/zk/internal/util/strings"
+	"github.com/mickael-menu/zk/internal/util/strings"
 )
 
 // List displays notes matching a set of criteria.
 type List struct {
-	Format     string `group:format short:f placeholder:TEMPLATE   help:"Pretty print the list using the given format."`
+	Format     string `group:format short:f placeholder:TEMPLATE   help:"Pretty print the list using a custom template or one of the predefined formats: oneline, short, medium, long, full, json, jsonl."`
+	Header     string `group:format                                help:"Arbitrary text printed at the start of the list."`
+	Footer     string `group:format                                help:"Arbitrary text printed at the end of the list."`
 	Delimiter  string "group:format short:d default:\n             help:\"Print notes delimited by the given separator.\""
 	Delimiter0 bool   "group:format short:0 name:delimiter0        help:\"Print notes delimited by ASCII NUL characters. This is useful when used in conjunction with `xargs -0`.\""
 	NoPager    bool   `group:format short:P help:"Do not pipe output into a pager."`
@@ -23,8 +24,49 @@ type List struct {
 }
 
 func (cmd *List) Run(container *cli.Container) error {
+	cmd.Header = strings.ExpandWhitespaceLiterals(cmd.Header)
+	cmd.Footer = strings.ExpandWhitespaceLiterals(cmd.Footer)
+	cmd.Delimiter = strings.ExpandWhitespaceLiterals(cmd.Delimiter)
+
 	if cmd.Delimiter0 {
+		if cmd.Delimiter != "\n" {
+			return errors.New("--delimiter and --delimiter0 can't be used together")
+		}
+		if cmd.Header != "" {
+			return errors.New("--footer and --delimiter0 can't be used together")
+		}
+		if cmd.Footer != "" {
+			return errors.New("--footer and --delimiter0 can't be used together")
+		}
+
 		cmd.Delimiter = "\x00"
+		cmd.Footer = "\x00"
+	}
+
+	if cmd.Format == "json" || cmd.Format == "jsonl" {
+		if cmd.Header != "" {
+			return errors.New("--header can't be used with JSON format")
+		}
+		if cmd.Footer != "" {
+			return errors.New("--footer can't be used with JSON format")
+		}
+		if cmd.Delimiter != "\n" {
+			return errors.New("--delimiter can't be used with JSON format")
+		}
+
+		switch cmd.Format {
+		case "json":
+			cmd.Delimiter = ","
+			cmd.Header = "["
+			cmd.Footer = "]\n"
+
+		case "jsonl":
+			// > The last character in the file may be a line separator, and it
+			// > will be treated the same as if there was no line separator
+			// > present.
+			// > https://jsonlines.org/
+			cmd.Footer = "\n"
+		}
 	}
 
 	notebook, err := container.CurrentNotebook()
@@ -64,6 +106,9 @@ func (cmd *List) Run(container *cli.Container) error {
 	count := len(notes)
 	if count > 0 {
 		err = container.Paginate(cmd.NoPager, func(out io.Writer) error {
+			if cmd.Header != "" {
+				fmt.Fprint(out, cmd.Header)
+			}
 			for i, note := range notes {
 				if i > 0 {
 					fmt.Fprint(out, cmd.Delimiter)
@@ -75,8 +120,8 @@ func (cmd *List) Run(container *cli.Container) error {
 				}
 				fmt.Fprint(out, ft)
 			}
-			if cmd.Delimiter0 {
+			if cmd.Footer != "" {
-				fmt.Fprint(out, "\x00")
+				fmt.Fprint(out, cmd.Footer)
 			}
 
 			return nil
@@ -84,7 +129,7 @@ func (cmd *List) Run(container *cli.Container) error {
 	}
 
 	if err == nil && !cmd.Quiet {
-		fmt.Fprintf(os.Stderr, "\n\nFound %d %s\n", count, strutil.Pluralize("note", count))
+		fmt.Fprintf(os.Stderr, "\n\nFound %d %s\n", count, strings.Pluralize("note", count))
 	}
 
 	return err
@@ -98,18 +143,17 @@ func (cmd *List) noteTemplate() string {
 
 	templ, ok := defaultNoteFormats[format]
 	if !ok {
-		templ = format
+		templ = strings.ExpandWhitespaceLiterals(format)
-		// Replace raw \n and \t by actual newlines and tabs in user format.
-		templ = strings.ReplaceAll(templ, "\\n", "\n")
-		templ = strings.ReplaceAll(templ, "\\t", "\t")
 	}
 
 	return templ
 }
 
 var defaultNoteFormats = map[string]string{
-	"path": `{{path}}`,
+	"json":  `{{json .}}`,
-	"link": `{{link}}`,
+	"jsonl": `{{json .}}`,
+	"path":  `{{path}}`,
+	"link":  `{{link}}`,
 
 	"oneline": `{{style "title" title}} {{style "path" path}} ({{date created "elapsed"}})`,
 

internal/cli/cmd/list_test.go

@@ -20,6 +20,8 @@ func TestListFormatPredefined(t *testing.T) {
 	}
 
 	// Known formats
+	test("json", `{{json .}}`)
+	test("jsonl", `{{json .}}`)
 	test("path", `{{path}}`)
 	test("link", `{{link}}`)
 

internal/core/note_format.go

@@ -11,7 +11,7 @@ import (
 // NoteFormatter formats notes to be printed on the screen.
 type NoteFormatter func(note ContextualNote) (string, error)
 
-func newNoteFormatter(basePath string, template Template, linkFormatter LinkFormatter, fs FileStorage) (NoteFormatter, error) {
+func newNoteFormatter(basePath string, template Template, linkFormatter LinkFormatter, env map[string]string, fs FileStorage) (NoteFormatter, error) {
 	termRepl, err := template.Styler().Style("$1", StyleTerm)
 	if err != nil {
 		return nil, err
@@ -45,6 +45,7 @@ func newNoteFormatter(basePath string, template Template, linkFormatter LinkForm
 			Created:    note.Created,
 			Modified:   note.Modified,
 			Checksum:   note.Checksum,
+			Env:        env,
 		})
 	}, nil
 }
@@ -54,20 +55,20 @@ var noteTermRegex = regexp.MustCompile(`<zk:match>(.*?)</zk:match>`)
 // noteFormatRenderContext holds the variables available to the note formatting
 // templates.
 type noteFormatRenderContext struct {
-	Path       string
+	Path       string                 `json:"path"`
-	Title      string
+	Title      string                 `json:"title"`
-	Link       fmt.Stringer
+	Link       fmt.Stringer           `json:"link"`
-	Lead       string
+	Lead       string                 `json:"lead"`
-	Body       string
+	Body       string                 `json:"body"`
-	Snippets   []string
+	Snippets   []string               `json:"snippets"`
-	RawContent string `handlebars:"raw-content"`
+	RawContent string                 `json:"rawContent" handlebars:"raw-content"`
-	WordCount  int    `handlebars:"word-count"`
+	WordCount  int                    `json:"wordCount" handlebars:"word-count"`
-	Tags       []string
+	Tags       []string               `json:"tags"`
-	Metadata   map[string]interface{}
+	Metadata   map[string]interface{} `json:"metadata"`
-	Created    time.Time
+	Created    time.Time              `json:"created"`
-	Modified   time.Time
+	Modified   time.Time              `json:"modified"`
-	Checksum   string
+	Checksum   string                 `json:"checksum"`
-	Env        map[string]string
+	Env        map[string]string      `json:"-"`
 }
 
 func (c noteFormatRenderContext) Equal(other noteFormatRenderContext) bool {

internal/core/note_format_test.go

@@ -202,6 +202,9 @@ func (t *formatTest) run(format string) (NoteFormatter, error) {
 			return t.templateLoader, nil
 		},
 		FS: t.fs,
+		OSEnv: func() map[string]string {
+			return map[string]string{}
+		},
 	})
 
 	return notebook.NewNoteFormatter(format)

internal/core/notebook.go

@@ -300,7 +300,7 @@ func (n *Notebook) NewNoteFormatter(templateString string) (NoteFormatter, error
 		return nil, err
 	}
 
-	return newNoteFormatter(n.Path, template, linkFormatter, n.fs)
+	return newNoteFormatter(n.Path, template, linkFormatter, n.osEnv(), n.fs)
 }
 
 // NewLinkFormatter returns a LinkFormatter used to generate internal links between notes.

internal/util/strings/strings.go

@@ -101,3 +101,11 @@ func InList(strings []string, s string) bool {
 	}
 	return false
 }
+
+// Expand literal escaped whitespace characters in the given string to their
+// actual character.
+func ExpandWhitespaceLiterals(s string) string {
+	s = strings.ReplaceAll(s, `\n`, "\n")
+	s = strings.ReplaceAll(s, `\t`, "\t")
+	return s
+}

internal/util/strings/strings_test.go

@@ -106,3 +106,12 @@ func TestInList(t *testing.T) {
 	test([]string{"one", "two"}, "one", true)
 	test([]string{"one", "two"}, "three", false)
 }
+
+func TestExpandWhitespaceLiterals(t *testing.T) {
+	test := func(s string, expected string) {
+		assert.Equal(t, ExpandWhitespaceLiterals(s), expected)
+	}
+
+	test(`nothing`, "nothing")
+	test(`newline\ntab\t`, "newline\ntab\t")
+}

main.go

@@ -98,8 +98,9 @@ func options(container *cli.Container) []kong.Option {
 		kong.Name("zk"),
 		kong.UsageOnError(),
 		kong.HelpOptions{
-			Compact:   true,
+			Compact:        true,
-			FlagsLast: true,
+			FlagsLast:      true,
+			WrapUpperBound: 100,
 		},
 		kong.Vars{
 			"version": "zk " + strings.TrimPrefix(Version, "v"),