refactor: consolidate C file settings and commands into a single configuration

Author: dvdgamer

after/ftplugin/c.lua

@@ -1,42 +1,101 @@
+-- Import vim module
 local set = vim.opt_local
 
-set.shiftwidth = 4
-set.tabstop = 4
-vim.g.sleuth_automatic = 0
+-- Indentation settings
+set.expandtab = true     -- Convert tabs to spaces
+set.shiftwidth = 4       -- Indent size for autoindent
+set.tabstop = 4          -- How wide tabs appear
+set.softtabstop = 4      -- How many spaces Tab key inserts/removes
+
+-- Comment string for commentary plugins
 set.commentstring = '/* %s */'
 
+-- Disable vim-sleuth for C files
+vim.g.sleuth_automatic = 0
+
 -- Define a custom command ':IntMain' that inserts int main() {} template
 vim.api.nvim_create_user_command('IntMain', function()
-    local current_line = vim.api.nvim_win_get_cursor(0)[1]
-    local lines = {
-      '#include <stdio.h>',
-      '',
-      'int main ()',
-      '{',
-      '    ',
-      '    printf();',
-      '    return 0;',
-      '}',
-    }
-    vim.api.nvim_buf_set_lines(0, current_line - 1, current_line - 1, false, lines)
-    -- Position cursor inside the function body
-    vim.api.nvim_win_set_cursor(0, { current_line + 1, 4 })
-  end, {})
-  
-  vim.api.nvim_create_user_command('Libft', function()
-    local current_line = vim.api.nvim_win_get_cursor(0)[1]
-    vim.api.nvim_buf_set_lines(0, current_line - 1, current_line - 1, false, {
-      '#include "libft.h"',
-    })
-  end, {})
-  
-  -- Force these settings after any other scripts might have changed them
-  vim.api.nvim_create_autocmd("FileType", {
-    pattern = "c",
-    callback = function()
-      vim.opt_local.tabstop = 4
-      vim.opt_local.shiftwidth = 4
-      vim.opt_local.softtabstop = 4
-      vim.opt_local.expandtab = true
-    end
-  })
+  local current_line = vim.api.nvim_win_get_cursor(0)[1]
+  local lines = {
+    '#include <stdio.h>',
+    '',
+    'int main(void)',
+    '{',
+    '    ',
+    '    printf("Hello, world!\\n");',
+    '    return 0;',
+    '}',
+  }
+  vim.api.nvim_buf_set_lines(0, current_line - 1, current_line - 1, false, lines)
+  -- Position cursor inside the function body
+  vim.api.nvim_win_set_cursor(0, { current_line + 4, 4 })
+end, {})
+
+-- Define a custom command ':Libft' that inserts libft.h include
+vim.api.nvim_create_user_command('Libft', function()
+  local current_line = vim.api.nvim_win_get_cursor(0)[1]
+  vim.api.nvim_buf_set_lines(0, current_line - 1, current_line - 1, false, {
+    '#include "libft.h"',
+  })
+end, {})
+
+-- Define a custom command ':CommentRestOfFile' that comments out rest of file
+vim.api.nvim_create_user_command('CommentRestOfFile', function()
+  local current_line = vim.api.nvim_win_get_cursor(0)[1]
+  local last_line = vim.api.nvim_buf_line_count(0)
+
+  -- Get all lines from current to end of file
+  local lines = vim.api.nvim_buf_get_lines(0, current_line - 1, last_line, false)
+
+  -- Prefix each line with //
+  for i = 1, #lines do
+    lines[i] = '//' .. lines[i]
+  end
+
+  -- Set the modified lines back in the buffer
+  vim.api.nvim_buf_set_lines(0, current_line - 1, last_line, false, lines)
+end, {})
+
+-- Define a custom command ':UncommentRestOfFile' that removes comments from rest of file
+vim.api.nvim_create_user_command('UncommentRestOfFile', function ()
+  local current_line = vim.api.nvim_win_get_cursor(0)[1]
+  local last_line = vim.api.nvim_buf_line_count(0)
+
+  -- Get all lines from current to end of file
+  local lines = vim.api.nvim_buf_get_lines(0, current_line - 1, last_line, false)
+
+  -- Remove leading // if present
+  for i = 1, #lines do
+    lines[i] = lines[i]:gsub("^%s*//", "")
+  end
+
+  -- Set the modified lines back in the buffer
+  vim.api.nvim_buf_set_lines(0, current_line - 1, last_line, false, lines)
+end, {})
+
+-- -- Debugging command to check indentation settings
+-- vim.api.nvim_create_user_command('CheckIndent', function()
+--   print("expandtab: " .. tostring(vim.bo.expandtab))
+--   print("tabstop: " .. vim.bo.tabstop)
+--   print("shiftwidth: " .. vim.bo.shiftwidth)
+--   print("softtabstop: " .. vim.bo.softtabstop)
+-- end, {})
+
+-- Force settings to apply after all other scripts have loaded
+vim.api.nvim_create_autocmd("BufEnter", {
+  pattern = "*.c,*.h",
+  callback = function()
+    vim.opt_local.expandtab = true
+    vim.opt_local.tabstop = 4
+    vim.opt_local.shiftwidth = 4
+    vim.opt_local.softtabstop = 4
+  end
+})
+
+-- Add any C-specific key mappings you want here
+-- Example: Map F5 to compile and run the current file
+vim.keymap.set('n', '<F5>', function()
+  local filename = vim.fn.expand('%:r')
+  vim.cmd('write')
+  vim.cmd('belowright split | terminal gcc -Wall -Wextra -Werror % -o ' .. filename .. ' && ./' .. filename)
+end, { buffer = true, desc = 'Compile and run C file' })