runtime(csv): include a simple csv filetype and syntax plugin

fixes: #15038

Signed-off-by: Maxim Kim <habamax@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

diff --git a/.github/MAINTAINERS b/.github/MAINTAINERS
index ea8e560d0154b74fc51795067a75215208b5a367..5ebe93a58c0bd77b9c8ac55047c08e6e781280b1 100644 (file)
--- a/.github/MAINTAINERS
+++ b/.github/MAINTAINERS
@@ -119,6 +119,7 @@ runtime/ftplugin/clojure.vim                @axvr
 runtime/ftplugin/cs.vim                        @nickspoons
 runtime/ftplugin/csh.vim               @dkearns
 runtime/ftplugin/css.vim               @dkearns
+runtime/ftplugin/csv.vim               @habamax
 runtime/ftplugin/cucumber.vim          @tpope
 runtime/ftplugin/dart.vim      @ribru17
 runtime/ftplugin/deb822sources.vim     @jamessan
@@ -369,6 +370,7 @@ runtime/syntax/chatito.vim          @ObserverOfTime
 runtime/syntax/chuck.vim               @gacallea
 runtime/syntax/clojure.vim             @axvr
 runtime/syntax/cs.vim                  @nickspoons
+runtime/syntax/csv.vim         @habamax
 runtime/syntax/cucumber.vim            @tpope
 runtime/syntax/d.vim                   @JesseKPhillips
 runtime/syntax/dart.vim                        @pr3d4t0r

diff --git a/runtime/ftplugin/csv.vim b/runtime/ftplugin/csv.vim
new file mode 100644 (file)
index 0000000..f1021f8
--- /dev/null
+++ b/runtime/ftplugin/csv.vim
@@ -0,0 +1,23 @@
+vim9script
+
+# Maintainer: Maxim Kim <habamax@gmail.com>
+# Last Update: 2024-06-18
+
+if !exists("b:csv_delimiter")
+    # detect delimiter
+    var delimiters = ",;\t|"
+
+    var max = 0
+    for d in delimiters
+        var count = getline(1)->split(d)->len() + getline(2)->split(d)->len()
+        if count > max
+            max = count
+            b:csv_delimiter = d
+        endif
+    endfor
+endif
+
+if exists("b:did_ftplugin")
+    finish
+endif
+b:did_ftplugin = 1

diff --git a/runtime/syntax/csv.vim b/runtime/syntax/csv.vim
new file mode 100644 (file)
index 0000000..848029a
--- /dev/null
+++ b/runtime/syntax/csv.vim
@@ -0,0 +1,39 @@
+vim9script
+
+# Maintainer: Maxim Kim <habamax@gmail.com>
+# Last Update: 2024-06-18
+
+if exists("b:current_syntax")
+    finish
+endif
+
+var delimiter = get(b:, "csv_delimiter", ",")
+
+# generate bunch of following syntaxes:
+# syntax match csvCol8 /.\{-}\(,\|$\)/ nextgroup=escCsvCol0,csvCol0
+# syntax region escCsvCol8 start=/ *"\([^"]*""\)*[^"]*/ end=/" *\(,\|$\)/ nextgroup=escCsvCol0,csvCol0
+for col in range(8, 0, -1)
+    var ncol = (col == 8 ? 0 : col + 1)
+    exe $'syntax match csvCol{col}' .. ' /.\{-}\(' .. delimiter .. '\|$\)/ nextgroup=escCsvCol' .. ncol .. ',csvCol' .. ncol
+    exe $'syntax region escCsvCol{col}' .. ' start=/ *"\([^"]*""\)*[^"]*/ end=/" *\(' .. delimiter .. '\|$\)/ nextgroup=escCsvCol' .. ncol .. ',csvCol' .. ncol
+endfor
+
+hi def link csvCol1 Statement
+hi def link csvCol2 Constant
+hi def link csvCol3 Type
+hi def link csvCol4 PreProc
+hi def link csvCol5 Identifier
+hi def link csvCol6 Special
+hi def link csvCol7 String
+hi def link csvCol8 Comment
+
+hi def link escCsvCol1 csvCol1
+hi def link escCsvCol2 csvCol2
+hi def link escCsvCol3 csvCol3
+hi def link escCsvCol4 csvCol4
+hi def link escCsvCol5 csvCol5
+hi def link escCsvCol6 csvCol6
+hi def link escCsvCol7 csvCol7
+hi def link escCsvCol8 csvCol8
+
+b:current_syntax = "csv"