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-- mod-version:3
local syntax = require "core.syntax"
local style = require "core.style"
local core = require "core"
local in_squares_match = "^%[%]"
local in_parenthesis_match = "^%(%)"
syntax.add {
name = "Markdown",
files = { "%.md$", "%.markdown$" },
block_comment = { "<!--", "-->" },
space_handling = false, -- turn off this feature to handle it our selfs
patterns = {
---- Place patterns that require spaces at start to optimize matching speed
---- and apply the %s+ optimization immediately afterwards
-- bullets
{ pattern = "^%s*%*%s", type = "number" },
{ pattern = "^%s*%-%s", type = "number" },
{ pattern = "^%s*%+%s", type = "number" },
-- numbered bullet
{ pattern = "^%s*[0-9]+[%.%)]%s", type = "number" },
-- blockquote
{ pattern = "^%s*>+%s", type = "string" },
-- alternative bold italic formats
{ pattern = { "%s___", "___" }, type = "markdown_bold_italic" },
{ pattern = { "%s__", "__" }, type = "markdown_bold" },
{ pattern = { "%s_[%S]", "_" }, type = "markdown_italic" },
-- reference links
{
pattern = "^%s*%[%^()["..in_squares_match.."]+()%]: ",
type = { "function", "number", "function" }
},
{
pattern = "^%s*%[%^?()["..in_squares_match.."]+()%]:%s+.*",
type = { "function", "number", "function" }
},
-- optimization
{ pattern = "%s+", type = "normal" },
---- HTML rules imported and adapted from language_html
---- to not conflict with markdown rules
-- Inline JS and CSS
{
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]>"
},
syntax = ".js",
type = "function"
},
{
pattern = {
"<%s*[sS][tT][yY][lL][eE][^>]*>",
"<%s*/%s*[sS][tT][yY][lL][eE]%s*>"
},
syntax = ".css",
type = "function"
},
-- Comments
{ pattern = { "<!%-%-", "%-%->" }, type = "comment" },
-- Tags
{ pattern = "%f[^<]![%a_][%w_]*", type = "keyword2" },
{ pattern = "%f[^<][%a_][%w_]*", type = "function" },
{ pattern = "%f[^<]/[%a_][%w_]*", type = "function" },
-- Attributes
{
pattern = "[a-z%-]+%s*()=%s*()\".-\"",
type = { "keyword", "operator", "string" }
},
{
pattern = "[a-z%-]+%s*()=%s*()'.-'",
type = { "keyword", "operator", "string" }
},
{
pattern = "[a-z%-]+%s*()=%s*()%-?%d[%d%.]*",
type = { "keyword", "operator", "number" }
},
-- Entities
{ pattern = "&#?[a-zA-Z0-9]+;", type = "keyword2" },
---- Markdown rules
-- math
{ pattern = { "%$%$", "%$%$", "\\" }, type = "string", syntax = ".tex"},
{ regex = { "\\$", [[\$|(?=\\*\n)]], "\\" }, type = "string", syntax = ".tex"},
-- code blocks
{ pattern = { "```caddyfile", "```" }, type = "string", syntax = "Caddyfile" },
{ pattern = { "```c++", "```" }, type = "string", syntax = ".cpp" },
{ pattern = { "```cpp", "```" }, type = "string", syntax = ".cpp" },
{ pattern = { "```python", "```" }, type = "string", syntax = ".py" },
{ pattern = { "```ruby", "```" }, type = "string", syntax = ".rb" },
{ pattern = { "```perl", "```" }, type = "string", syntax = ".pl" },
{ pattern = { "```php", "```" }, type = "string", syntax = ".php" },
{ pattern = { "```javascript", "```" }, type = "string", syntax = ".js" },
{ pattern = { "```json", "```" }, type = "string", syntax = ".js" },
{ pattern = { "```html", "```" }, type = "string", syntax = ".html" },
{ pattern = { "```ini", "```" }, type = "string", syntax = ".ini" },
{ pattern = { "```xml", "```" }, type = "string", syntax = ".xml" },
{ pattern = { "```css", "```" }, type = "string", syntax = ".css" },
{ pattern = { "```lua", "```" }, type = "string", syntax = ".lua" },
{ pattern = { "```bash", "```" }, type = "string", syntax = ".sh" },
{ pattern = { "```sh", "```" }, type = "string", syntax = ".sh" },
{ pattern = { "```java", "```" }, type = "string", syntax = ".java" },
{ pattern = { "```c#", "```" }, type = "string", syntax = ".cs" },
{ pattern = { "```cmake", "```" }, type = "string", syntax = ".cmake" },
{ pattern = { "```d", "```" }, type = "string", syntax = ".d" },
{ pattern = { "```glsl", "```" }, type = "string", syntax = ".glsl" },
{ pattern = { "```c", "```" }, type = "string", syntax = ".c" },
{ pattern = { "```julia", "```" }, type = "string", syntax = ".jl" },
{ pattern = { "```rust", "```" }, type = "string", syntax = ".rs" },
{ pattern = { "```dart", "```" }, type = "string", syntax = ".dart" },
{ pattern = { "```v", "```" }, type = "string", syntax = ".v" },
{ pattern = { "```toml", "```" }, type = "string", syntax = ".toml" },
{ pattern = { "```yaml", "```" }, type = "string", syntax = ".yaml" },
{ pattern = { "```nim", "```" }, type = "string", syntax = ".nim" },
{ pattern = { "```typescript", "```" }, type = "string", syntax = ".ts" },
{ pattern = { "```rescript", "```" }, type = "string", syntax = ".res" },
{ pattern = { "```moon", "```" }, type = "string", syntax = ".moon" },
{ pattern = { "```go", "```" }, type = "string", syntax = ".go" },
{ pattern = { "```lobster", "```" }, type = "string", syntax = ".lobster" },
{ pattern = { "```liquid", "```" }, type = "string", syntax = ".liquid" },
{ pattern = { "```nix", "```" }, type = "string", syntax = ".nix" },
{ pattern = { "```", "```" }, type = "string" },
{ pattern = { "``", "``" }, type = "string" },
{ pattern = { "%f[\\`]%`[%S]", "`" }, type = "string" },
-- lines
{ pattern = "^%-%-%-+\n" , type = "comment" },
{ pattern = "^%*%*%*+\n", type = "comment" },
{ pattern = "^___+\n", type = "comment" },
{ pattern = "^===+\n", type = "comment" },
-- strike
{ pattern = { "~~", "~~" }, type = "keyword2" },
-- highlight
{ pattern = { "==", "==" }, type = "literal" },
-- bold and italic
{ pattern = { "%*%*%*%S", "%*%*%*" }, type = "markdown_bold_italic" },
{ pattern = { "%*%*%S", "%*%*" }, type = "markdown_bold" },
-- handle edge case where asterisk can be at end of line and not close
{
pattern = { "%f[\\%*]%*[%S]", "%*%f[^%*]" },
type = "markdown_italic"
},
-- alternative bold italic formats
{ pattern = "^___[%s%p%w]+___" , type = "markdown_bold_italic" },
{ pattern = "^__[%s%p%w]+__" , type = "markdown_bold" },
{ pattern = "^_[%s%p%w]+_" , type = "markdown_italic" },
-- heading with custom id
{
pattern = "^#+%s[%w%s%p]+(){()#[%w%-]+()}",
type = { "keyword", "function", "string", "function" }
},
-- headings
{ pattern = "^#+%s.+\n", type = "keyword" },
-- superscript and subscript
{
pattern = "%^()%d+()%^",
type = { "function", "number", "function" }
},
{
pattern = "%~()%d+()%~",
type = { "function", "number", "function" }
},
-- definitions
{ pattern = "^:%s.+", type = "function" },
-- emoji
{ pattern = ":[a-zA-Z0-9_%-]+:", type = "literal" },
-- images and link
{
pattern = "!?%[!?%[()["..in_squares_match.."]+()%]%(()["..in_parenthesis_match.."]+()%)%]%(()["..in_parenthesis_match.."]+()%)",
type = { "function", "string", "function", "number", "function", "number", "function" }
},
{
pattern = "!?%[!?%[?()["..in_squares_match.."]+()%]?%]%(()["..in_parenthesis_match.."]+()%)",
type = { "function", "string", "function", "number", "function" }
},
-- reference links
{
pattern = "%[()["..in_squares_match.."]+()%] *()%[()["..in_squares_match.."]+()%]",
type = { "function", "string", "function", "function", "number", "function" }
},
{
pattern = "!?%[%^?()["..in_squares_match.."]+()%]",
type = { "function", "number", "function" }
},
-- url's and email
{
pattern = "<[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+%.[a-zA-Z0-9-.]+>",
type = "function"
},
{ pattern = "<https?://%S+>", type = "function" },
{ pattern = "https?://%S+", type = "function" },
-- optimize consecutive dashes used in tables
{ pattern = "%-+", type = "normal" },
},
symbols = { },
}
-- Adjust the color on theme changes
core.add_thread(function()
local custom_fonts = { bold = {font = nil, color = nil}, italic = {}, bold_italic = {} }
local initial_color
local last_code_font
local function set_font(attr)
local attributes = {}
if attr ~= "bold_italic" then
attributes[attr] = true
else
attributes["bold"] = true
attributes["italic"] = true
end
local font = style.code_font:copy(
style.code_font:get_size(),
attributes
)
custom_fonts[attr].font = font
style.syntax_fonts["markdown_"..attr] = font
end
local function set_color(attr)
custom_fonts[attr].color = style.syntax["keyword2"]
style.syntax["markdown_"..attr] = style.syntax["keyword2"]
end
-- Add 3 type of font styles for use on markdown files
for attr, _ in pairs(custom_fonts) do
-- Only set it if the font wasn't manually customized
if not style.syntax_fonts["markdown_"..attr] then
set_font(attr)
end
-- Only set it if the color wasn't manually customized
if not style.syntax["markdown_"..attr] then
set_color(attr)
end
end
while true do
if last_code_font ~= style.code_font then
last_code_font = style.code_font
for attr, _ in pairs(custom_fonts) do
-- Only set it if the font wasn't manually customized
if style.syntax_fonts["markdown_"..attr] == custom_fonts[attr].font then
set_font(attr)
end
end
end
if initial_color ~= style.syntax["keyword2"] then
initial_color = style.syntax["keyword2"]
for attr, _ in pairs(custom_fonts) do
-- Only set it if the color wasn't manually customized
if style.syntax["markdown_"..attr] == custom_fonts[attr].color then
set_color(attr)
end
end
end
coroutine.yield(1)
end
end)
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