Rendering CSV

Author: lpil

universal/gleam.toml

@@ -7,7 +7,7 @@ envoy = ">= 1.0.2 and < 2.0.0"
 gleam_crypto = ">= 1.3.0 and < 2.0.0"
 gleam_json = ">= 1.0.1 and < 2.0.0"
 gleam_stdlib = ">= 0.34.0 and < 2.0.0"
-gsv = ">= 2.0.0 and < 3.0.0"
+gsv = ">= 3.0.0 and < 4.0.0"
 lustre = ">= 4.4.4 and < 5.0.0"
 simplifile = ">= 2.1.0 and < 3.0.0"
 tom = ">= 1.1.0 and < 2.0.0"

universal/manifest.toml

@@ -9,8 +9,9 @@ packages = [
   { name = "gleam_json", version = "1.0.1", build_tools = ["gleam"], requirements = ["gleam_stdlib", "thoas"], otp_app = "gleam_json", source = "hex", outer_checksum = "9063D14D25406326C0255BDA0021541E797D8A7A12573D849462CAFED459F6EB" },
   { name = "gleam_otp", version = "0.12.0", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_stdlib"], otp_app = "gleam_otp", source = "hex", outer_checksum = "CD5FC777E99673BDB390092DF85E34EAA6B8EE1882147496290AB3F45A4960B1" },
   { name = "gleam_stdlib", version = "0.40.0", build_tools = ["gleam"], requirements = [], otp_app = "gleam_stdlib", source = "hex", outer_checksum = "86606B75A600BBD05E539EB59FABC6E307EEEA7B1E5865AFB6D980A93BCB2181" },
+  { name = "glearray", version = "1.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "glearray", source = "hex", outer_checksum = "B99767A9BC63EF9CC8809F66C7276042E5EFEACAA5B25188B552D3691B91AC6D" },
   { name = "gleeunit", version = "1.2.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gleeunit", source = "hex", outer_checksum = "F7A7228925D3EE7D0813C922E062BFD6D7E9310F0BEE585D3A42F3307E3CFD13" },
-  { name = "gsv", version = "2.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib"], otp_app = "gsv", source = "hex", outer_checksum = "DBC35126CB3621D305EC2412C9D43F90D496692BB58BA3BEDF70C1AD34143587" },
+  { name = "gsv", version = "3.0.0", build_tools = ["gleam"], requirements = ["gleam_stdlib", "glearray"], otp_app = "gsv", source = "hex", outer_checksum = "2FD89349BB9E3A2D9060C0E9F4B6AC70680088E7B0629F20F37653E93D400EF2" },
   { name = "lustre", version = "4.4.4", build_tools = ["gleam"], requirements = ["gleam_erlang", "gleam_json", "gleam_otp", "gleam_stdlib"], otp_app = "lustre", source = "hex", outer_checksum = "35A8597B3054AFAF734A54979B7C92D8AB43273B843717F854CF5A05CF2BC00E" },
   { name = "simplifile", version = "2.1.0", build_tools = ["gleam"], requirements = ["filepath", "gleam_stdlib"], otp_app = "simplifile", source = "hex", outer_checksum = "BDD04F5D31D6D34E2EDFAEF0B68A6297AEC939888C3BFCE61133DE13857F6DA2" },
   { name = "thoas", version = "1.2.1", build_tools = ["rebar3"], requirements = [], otp_app = "thoas", source = "hex", outer_checksum = "E38697EDFFD6E91BD12CEA41B155115282630075C2A727E7A6B2947F5408B86A" },
@@ -24,7 +25,7 @@ gleam_crypto = { version = ">= 1.3.0 and < 2.0.0" }
 gleam_json = { version = ">= 1.0.1 and < 2.0.0" }
 gleam_stdlib = { version = ">= 0.34.0 and < 2.0.0" }
 gleeunit = { version = ">= 1.0.0 and < 2.0.0" }
-gsv = { version = ">= 2.0.0 and < 3.0.0" }
+gsv = { version = ">= 3.0.0 and < 4.0.0" }
 lustre = { version = ">= 4.4.4 and < 5.0.0" }
 simplifile = { version = ">= 2.1.0 and < 3.0.0" }
 tom = { version = ">= 1.1.0 and < 2.0.0" }

universal/test/formats/rendering_csv.gleam

@@ -11,20 +11,45 @@ import gleeunit/should
 import gsv
 
 pub fn main_test() {
-  let data = [
+  // If you have your data as a list of dicts then you can use the 
+  // `from_dicts` function to create a CSV.
+  // The headers will be taken automatically from the keys of all of the dicts.
+  [
     dict.from_list([#("name", "Lucy"), #("score", "100"), #("colour", "Pink")]),
-    dict.from_list([
-      #("name", "Isaac"),
-      #("youtube", "@IsaacHarrisHolt"),
-      #("score", "99"),
-    ]),
+    dict.from_list([#("name", "Louis"), #("youtube", "@lpil"), #("score", "99")]),
   ]
-
-  gsv.from_dicts(data, ",", gsv.Unix)
+  |> gsv.from_dicts(",", gsv.Unix)
   |> should.equal(
     "colour,name,score,youtube
 Pink,Lucy,100,
-,Isaac,99,@IsaacHarrisHolt
-",
+,Louis,99,@lpil",
+  )
+
+  // If you want to have control over the order of the columns than you can use
+  // the `from_lists` function.
+  [
+    ["name", "score", "youtube", "colour"],
+    ["Lucy", "100", "", "Pink"],
+    ["Louis", "99", "@lpil", ""],
+  ]
+  |> gsv.from_lists(",", gsv.Unix)
+  |> should.equal(
+    "name,score,youtube,colour
+Lucy,100,,Pink
+Louis,99,@lpil,",
+  )
+
+  // You can specify a different line ending and separator with either
+  // function. Here a `;` is used to render TSV.
+  [
+    ["name", "score", "youtube", "colour"],
+    ["Lucy", "100", "", "Pink"],
+    ["Louis", "99", "@lpil", ""],
+  ]
+  |> gsv.from_lists(";", gsv.Unix)
+  |> should.equal(
+    "name;score;youtube;colour
+Lucy;100;;Pink
+Louis;99;@lpil;",
   )
 }