From 4d31b1bc404a56a1160f75ed82adec24042d676e Mon Sep 17 00:00:00 2001
From: takase1121 <20792268+takase1121@users.noreply.github.com>
Date: Sat, 25 Dec 2021 12:57:00 +0800
Subject: [PATCH] add toggle-block-comment

---
 data/core/commands/doc.lua     | 48 ++++++++++++++++++++++++++++++++++
 data/core/keymap.lua           |  1 +
 data/plugins/language_c.lua    |  1 +
 data/plugins/language_cpp.lua  |  1 +
 data/plugins/language_css.lua  |  1 +
 data/plugins/language_html.lua | 31 +++++++++++-----------
 data/plugins/language_js.lua   |  1 +
 data/plugins/language_lua.lua  |  1 +
 data/plugins/language_xml.lua  |  1 +
 9 files changed, 71 insertions(+), 15 deletions(-)

diff --git a/data/core/commands/doc.lua b/data/core/commands/doc.lua
index 8e2078f3..1e65ad11 100644
--- a/data/core/commands/doc.lua
+++ b/data/core/commands/doc.lua
@@ -292,6 +292,54 @@ local commands = {
     end
   end,
 
+  ["doc:toggle-block-comments"] = function()
+    local comment = doc().syntax.multiline_comment
+    if not comment then return end
+
+    for idx, line1, col1, line2, col2 in doc_multiline_selections(true) do
+      local text = doc():get_text(line1, col1, line2, col2)
+
+      -- might need to deal with unicode later...
+      local cs, cse = text:find(comment[1], 1, true)
+      local ce = text:find(comment[2], #text - #comment[2] + 1, true)
+
+      local new_col1, new_col2 = col1, col2
+      -- uncomment
+      if cs and ce then
+        if line1 == line2 then
+          new_col2 = new_col2 - #table.concat(comment)
+        else
+          new_col2 = new_col2 - #comment[2]
+        end
+
+        -- remove 1 whitespace if possible
+        if text:sub(cse + 1, cse + 1) == " " then
+          cse = cse + 1
+          if line1 == line2 then
+            new_col2 = new_col2 - 1
+          end
+        end
+        if text:sub(ce - 1, ce - 1) == " " then
+          ce = ce - 1
+          new_col2 = new_col2 - 1
+        end
+
+        text = text:sub(cse + 1, ce - 1)
+      -- comment
+      else
+        text = comment[1] .. " " .. text .. " " .. comment[2]
+        if line1 == line2 then
+          new_col2 = new_col2 + #table.concat(comment) + 2
+        else
+          new_col2 = new_col2 + #comment[2] + 1
+        end
+      end
+      doc():remove(line1, col1, line2, col2)
+      doc():insert(line1, col1, text)
+      doc():set_selections(idx, line1, new_col1, line2, new_col2)
+    end
+  end,
+
   ["doc:toggle-line-comments"] = function()
     local comment = doc().syntax.comment
     if not comment then return end
diff --git a/data/core/keymap.lua b/data/core/keymap.lua
index 404cff39..6716fca9 100644
--- a/data/core/keymap.lua
+++ b/data/core/keymap.lua
@@ -215,6 +215,7 @@ keymap.add_direct {
   ["ctrl+l"] = "doc:select-lines",
   ["ctrl+shift+l"] = { "find-replace:select-add-all", "doc:select-word" },
   ["ctrl+/"] = "doc:toggle-line-comments",
+  ["ctrl+shift+/"] = "doc:toggle-block-comments",
   ["ctrl+up"] = "doc:move-lines-up",
   ["ctrl+down"] = "doc:move-lines-down",
   ["ctrl+shift+d"] = "doc:duplicate-lines",
diff --git a/data/plugins/language_c.lua b/data/plugins/language_c.lua
index 88cc7c5a..ecbeed7a 100644
--- a/data/plugins/language_c.lua
+++ b/data/plugins/language_c.lua
@@ -5,6 +5,7 @@ syntax.add {
   name = "C",
   files = { "%.c$", "%.h$", "%.inl$" },
   comment = "//",
+  multiline_comment = { "/*", "*/" },
   patterns = {
     { pattern = "//.-\n",                type = "comment" },
     { pattern = { "/%*", "%*/" },        type = "comment" },
diff --git a/data/plugins/language_cpp.lua b/data/plugins/language_cpp.lua
index a945fd1f..03554a48 100644
--- a/data/plugins/language_cpp.lua
+++ b/data/plugins/language_cpp.lua
@@ -10,6 +10,7 @@ syntax.add {
     "%.c++$", "%.hh$", "%.H$", "%.hxx$", "%.hpp$", "%.h++$"
   },
   comment = "//",
+  multiline_comment = { "/*", "*/" },
   patterns = {
     { pattern = "//.-\n",                   type = "comment" },
     { pattern = { "/%*", "%*/" },           type = "comment" },
diff --git a/data/plugins/language_css.lua b/data/plugins/language_css.lua
index 395e375c..871598a2 100644
--- a/data/plugins/language_css.lua
+++ b/data/plugins/language_css.lua
@@ -4,6 +4,7 @@ local syntax = require "core.syntax"
 syntax.add {
   name = "CSS",
   files = { "%.css$" },
+  multiline_comment = { "/*", "*/" },
   patterns = {
     { pattern = "\\.",                type = "normal"   },
     { pattern = "//.-\n",             type = "comment"  },
diff --git a/data/plugins/language_html.lua b/data/plugins/language_html.lua
index 1f4515bc..e22e8897 100644
--- a/data/plugins/language_html.lua
+++ b/data/plugins/language_html.lua
@@ -4,28 +4,29 @@ local syntax = require "core.syntax"
 syntax.add {
   name = "HTML",
   files = { "%.html?$" },
+  multiline_comment = { "<!--", "-->" },
   patterns = {
-    { 
-      pattern = { 
+    {
+      pattern = {
         "<%s*[sS][cC][rR][iI][pP][tT]%s+[tT][yY][pP][eE]%s*=%s*" ..
           "['\"]%a+/[jJ][aA][vV][aA][sS][cC][rR][iI][pP][tT]['\"]%s*>",
-        "<%s*/[sS][cC][rR][iI][pP][tT]>" 
-      },
-      syntax = ".js", 
-      type = "function" 
-    },
-    { 
-      pattern = { 
-        "<%s*[sS][cC][rR][iI][pP][tT]%s*>",
-        "<%s*/%s*[sS][cC][rR][iI][pP][tT]>" 
+        "<%s*/[sS][cC][rR][iI][pP][tT]>"
       },
       syntax = ".js",
       type = "function"
     },
-    { 
-      pattern = { 
-        "<%s*[sS][tT][yY][lL][eE][^>]*>", 
-        "<%s*/%s*[sS][tT][yY][lL][eE]%s*>" 
+    {
+      pattern = {
+        "<%s*[sS][cC][rR][iI][pP][tT]%s*>",
+        "<%s*/%s*[sS][cC][rR][iI][pP][tT]>"
+      },
+      syntax = ".js",
+      type = "function"
+    },
+    {
+      pattern = {
+        "<%s*[sS][tT][yY][lL][eE][^>]*>",
+        "<%s*/%s*[sS][tT][yY][lL][eE]%s*>"
       },
       syntax = ".css",
       type = "function"
diff --git a/data/plugins/language_js.lua b/data/plugins/language_js.lua
index 94ab8499..d23e412b 100644
--- a/data/plugins/language_js.lua
+++ b/data/plugins/language_js.lua
@@ -5,6 +5,7 @@ syntax.add {
   name = "JavaScript",
   files = { "%.js$", "%.json$", "%.cson$" },
   comment = "//",
+  multiline_comment = { "/*", "*/" },
   patterns = {
     { pattern = "//.-\n",               type = "comment"  },
     { pattern = { "/%*", "%*/" },       type = "comment"  },
diff --git a/data/plugins/language_lua.lua b/data/plugins/language_lua.lua
index 5c770d43..79a8289b 100644
--- a/data/plugins/language_lua.lua
+++ b/data/plugins/language_lua.lua
@@ -6,6 +6,7 @@ syntax.add {
   files = "%.lua$",
   headers = "^#!.*[ /]lua",
   comment = "--",
+  multiline_comment = { "--[[", "]]" },
   patterns = {
     { pattern = { '"', '"', '\\' },          type = "string" },
     { pattern = { "'", "'", '\\' },          type = "string" },
diff --git a/data/plugins/language_xml.lua b/data/plugins/language_xml.lua
index c858d3cf..971a53de 100644
--- a/data/plugins/language_xml.lua
+++ b/data/plugins/language_xml.lua
@@ -5,6 +5,7 @@ syntax.add {
   name = "XML",
   files = { "%.xml$" },
   headers = "<%?xml",
+  multiline_comment = { "<!--", "-->" },
   patterns = {
     { pattern = { "<!%-%-", "%-%->" },     type = "comment"  },
     { pattern = { '%f[^>][^<]', '%f[<]' }, type = "normal"   },