Initial commit

lua/jquote/init.lua

@@ -0,0 +1,129 @@
+local M = {}
+
+M.options = {
+    hotkey = "<leader>tq",
+    quote_chars = { "'", '"', "`" },
+}
+
+---Merges user-provided options with default options.
+---@param user_options table|nil User-provided options
+function M.setup(user_options)
+    if user_options and type(user_options) == "table" then
+        for k, v in pairs(user_options) do
+            M.options[k] = v
+        end
+    end
+end
+
+--- Checks if a given character is one of the predefined quote characters.
+--- @param char string The character to check.
+--- @return boolean true if the character is a quote character, false otherwise.
+local function is_defined_quote_char(char)
+    for _, qc in ipairs(M.quote_chars) do
+        if char == qc then
+            return true
+        end
+    end
+    return false
+end
+
+--- Finds the starting and ending indices of a quoted string on the current line
+--- that contains the cursor, using a predefined set of quote characters.
+--- @param line string The current line of text.
+--- @param cursor_col number The column index of the cursor (0-based).
+--- @return number start_index The 0-based starting index of the quote, or -1 if not found.
+--- @return number end_index The 0-based ending index of the quote, or -1 if not found.
+--- @return string current_quote_char The character of the identified quote, or nil.
+local function find_quoted_string_at_cursor(line, cursor_col)
+    local start_quote_index = -1
+    local end_quote_index = -1
+    local current_quote_char = nil
+
+    -- Iterate through the line to find a matching pair of quotes that contain the cursor.
+    for i = 0, #line - 1 do
+        local char = line:sub(i + 1, i + 1)
+
+        if not is_defined_quote_char(char) then
+            goto continue_loop -- Not a quote character, skip.
+        end
+
+        -- If we haven't found an opening quote yet, this is a potential candidate.
+        if start_quote_index == -1 then
+            start_quote_index = i
+            current_quote_char = char
+        elseif char == current_quote_char then
+            -- Found a closing quote that matches the current opening quote.
+            end_quote_index = i
+
+            -- Check if the cursor is within this identified quoted string (inclusive of quotes).
+            if (cursor_col >= start_quote_index and cursor_col <= end_quote_index) or (cursor_col <= start_quote_index and cursor_col <= end_quote_index) then
+                return start_quote_index, end_quote_index, current_quote_char
+            else
+                -- Cursor is not in this string, reset to look for the next potential string.
+                start_quote_index = -1
+                end_quote_index = -1
+                current_quote_char = nil
+            end
+        end
+        ::continue_loop::
+    end
+
+    -- No relevant quoted string found that contains the cursor.
+    return -1, -1, nil
+end
+
+--- Cycles to the next quote character in the predefined list.
+--- @param current_char string The current quote character.
+--- @return string The next quote character, or nil if current_char is not found.
+local function get_next_quote_char(current_char)
+    local current_char_list_index = -1
+    for i, qc in ipairs(M.quote_chars) do
+        if qc == current_char then
+            current_char_list_index = i
+            break
+        end
+    end
+
+    if current_char_list_index == -1 then
+        return nil -- Current character not in our defined list.
+    end
+
+    local next_char_list_index = (current_char_list_index % #M.quote_chars) + 1
+    return M.quote_chars[next_char_list_index]
+end
+
+--- Toggles the quotes around the string at the cursor position
+--- by cycling through a predefined list of quote characters.
+function M.toggle_quotes()
+    local current_line = vim.api.nvim_get_current_line()
+    local cursor_row, cursor_col = unpack(vim.api.nvim_win_get_cursor(0))
+
+    local start_idx, end_idx, current_char =
+        find_quoted_string_at_cursor(current_line, cursor_col)
+
+    -- If no quoted string containing the cursor was found, do nothing.
+    if start_idx == -1 or end_idx == -1 or not current_char then
+        return
+    end
+
+    local next_char = get_next_quote_char(current_char)
+    if not next_char then
+        -- This should ideally not happen if current_char came from find_quoted_string_at_cursor
+        -- and QUOTE_CHARS is consistent, but acts as a safeguard.
+        return
+    end
+
+    -- Reconstruct the line with the new quote characters.
+    local new_line =
+        current_line:sub(1, start_idx) ..
+        next_char ..
+        current_line:sub(start_idx + 2, end_idx) ..
+        next_char ..
+        current_line:sub(end_idx + 2)
+
+    -- Update Neovim's buffer and cursor position.
+    vim.api.nvim_set_current_line(new_line)
+    vim.api.nvim_win_set_cursor(0, { cursor_row, cursor_col })
+end
+
+return M

plugin/jquote.lua

@@ -0,0 +1,14 @@
+if vim.g.jquote_loaded then
+    return
+end
+vim.g.jquote_loaded = true
+
+local jquote = require("jquote")
+
+local map_opts = {
+    desc = "Swaps the quotes around",
+    silent = true,
+    noremap = true,
+}
+
+vim.keymap.set("n", jquote.options.hotkey, jquote.toggle_quotes, map_opts)