disable scraper disabling

doc/cp.nvim.txt

@@ -120,8 +120,8 @@ Here's an example configuration with lazy.nvim: >lua
         cmd = 'CP',
         build = 'uv sync',
         opts = {
-            contests = {
+            platforms = {
-                default = {
+                cses = {
                     cpp = {
                         compile = { 'g++', '{source}', '-o', '{binary}',
                                    '-std=c++17', '-fdiagnostic-colors=always' },
@@ -138,7 +138,6 @@ Here's an example configuration with lazy.nvim: >lua
             },
             snippets = {},
             debug = false,
-            scrapers = { 'atcoder', 'codeforces', 'cses' },
             run_panel = {
                 ansi = true,
                 diff_mode = 'vim',
@@ -156,23 +155,29 @@ Here's an example configuration with lazy.nvim: >lua
 <
 
 By default, all contests are configured to use C++ with the g++ compiler and ISO standard 
-17. Python is also configured with the system executable python as a non-default option. Consult lua/cp/config.lua for
+17. Python is also configured with the system executable python.
-more information.
 
 For example, to run CodeForces contests with Python, only the following config
 is required:
 
     {
-        contests = {
+        platforms = {
             codeforces = {
-                default_langauge = 'python'
+                default_language = 'python'
             }
         }
+    }
+
+Any language is supported, provided the proper configuration. For example, to
+run CSES problems with Rust:
+
+    {
+        
     }
 
                                                                *cp.Config*
     Fields: ~
-        {contests}      (table<string,ContestConfig>) Contest configurations.
+        {platforms}     (table<string,PlatformContestConfig>) Contest configurations.
         {hooks}         (|cp.Hooks|) Hook functions called at various stages.
         {snippets}      (table[]) LuaSnip snippet definitions.
         {debug}         (boolean, default: false) Show info messages
@@ -189,11 +194,12 @@ is required:
                         Should return full filename with extension.
                         (default: concatenates contest_id and problem_id, lowercased)
 
-                                                         *cp.ContestConfig*
+                                                         *cp.PlatformConfig*
     Fields: ~
         {cpp}               (|LanguageConfig|) C++ language configuration.
         {python}            (|LanguageConfig|) Python language configuration.
-        {default_language}  (string, default: "cpp") Default language for contests.
+        {default_language}  (string, default: "cpp") Default language for
+                            platform contests.
 
                                                           *cp.LanguageConfig*
     Fields: ~
@@ -201,7 +207,6 @@ is required:
                         {source}, {binary} placeholders.
         {test}          (string[]) Test execution command template.
         {debug}         (string[], optional) Debug compile command template.
-        {extension}     (string) File extension (e.g. "cc", "py").
         {executable}    (string, optional) Executable name for interpreted languages.
 
                                                         *cp.RunPanelConfig*

lua/cp/config.lua

@@ -1,14 +1,12 @@
----@class LanguageConfig
+---@class PlatformLanguageConfig
 ---@field compile? string[] Compile command template
 ---@field test string[] Test execution command template
 ---@field debug? string[] Debug command template
 ---@field executable? string Executable name
----@field version? number Language version
 ---@field extension? string File extension
 
----@class ContestConfig
+---@class PlatformConfig
----@field cpp LanguageConfig
+---@field [string] PlatformLanguageConfig
----@field python LanguageConfig
 ---@field default_language? string
 
 ---@class Hooks
@@ -28,22 +26,20 @@
 ---@field git DiffGitConfig
 
 ---@class cp.Config
----@field platforms table<string, ContestConfig>
+---@field platforms table<string, PlatformConfig>
 ---@field snippets any[]
 ---@field hooks Hooks
 ---@field debug boolean
----@field scrapers string[]
 ---@field filename? fun(contest: string, contest_id: string, problem_id?: string, config: cp.Config, language?: string): string
 ---@field run_panel RunPanelConfig
 ---@field diff DiffConfig
 ---@field picker string|nil
 
 ---@class cp.PartialConfig
----@field platforms? table<string, ContestConfig>
+---@field platforms? table<string, PlatformConfig>
 ---@field snippets? any[]
 ---@field hooks? Hooks
 ---@field debug? boolean
----@field scrapers? string[]
 ---@field filename? fun(contest: string, contest_id: string, problem_id?: string, config: cp.Config, language?: string): string
 ---@field run_panel? RunPanelConfig
 ---@field diff? DiffConfig
@@ -64,7 +60,6 @@ local default_contest_config = {
     test = { '{source}' },
     debug = { '{source}' },
     executable = 'python',
-    extension = 'py',
   },
   default_language = 'cpp',
 }
@@ -111,7 +106,6 @@ function M.setup(user_config)
       snippets = { user_config.snippets, { 'table', 'nil' }, true },
       hooks = { user_config.hooks, { 'table', 'nil' }, true },
       debug = { user_config.debug, { 'boolean', 'nil' }, true },
-      scrapers = { user_config.scrapers, { 'table', 'nil' }, true },
       filename = { user_config.filename, { 'function', 'nil' }, true },
       run_panel = { user_config.run_panel, { 'table', 'nil' }, true },
       diff = { user_config.diff, { 'table', 'nil' }, true },
@@ -136,22 +130,6 @@ function M.setup(user_config)
       end
     end
 
-    if user_config.scrapers then
-      for _, platform_name in ipairs(user_config.scrapers) do
-        if type(platform_name) ~= 'string' then
-          error(('Invalid scraper value type. Expected string, got %s'):format(type(platform_name)))
-        end
-        if not vim.tbl_contains(constants.PLATFORMS, platform_name) then
-          error(
-            ("Invalid platform '%s' in scrapers config. Valid platforms: %s"):format(
-              platform_name,
-              table.concat(constants.PLATFORMS, ', ')
-            )
-          )
-        end
-      end
-    end
-
     if user_config.picker then
       if not vim.tbl_contains({ 'telescope', 'fzf-lua' }, user_config.picker) then
         error(("Invalid picker '%s'. Must be 'telescope' or 'fzf-lua'"):format(user_config.picker))
@@ -206,34 +184,9 @@ function M.setup(user_config)
   })
 
   for _, platform_config in pairs(config.platforms) do
-    for lang_name, lang_config in pairs(platform_config) do
-      if type(lang_config) == 'table' and not lang_config.extension then
-        if lang_name == 'cpp' then
-          lang_config.extension = 'cpp'
-        elseif lang_name == 'python' then
-          lang_config.extension = 'py'
-        end
-      end
-    end
-
-    vim.print(platform_config)
     if not platform_config.default_language then
-      local available_langs = {}
+      -- arbitrarily choose a language
-      for lang_name, lang_config in pairs(platform_config) do
+      platform_config.default_language = vim.tbl_keys(platform_config)[1]
-        if type(lang_config) == 'table' and lang_name ~= 'default_language' then
-          table.insert(available_langs, lang_name)
-        end
-      end
-
-      if vim.tbl_isemtpy(available_langs) then
-        error('No language configurations found')
-      end
-
-      vim.print('sorting langs')
-      --- arbitrarily break ties
-      table.sort(available_langs)
-      vim.print(available_langs)
-      platform_config.default_language = available_langs[1]
     end
   end
 

lua/cp/constants.lua

@@ -24,6 +24,12 @@ M.canonical_filetypes = {
   [M.PYTHON] = 'python',
 }
 
+---@type table<string, string>
+M.canonical_filetype_to_extension = {
+  [M.CPP] = 'cc',
+  [M.PYTHON] = 'py',
+}
+
 ---@type table<number, string>
 M.signal_codes = {
   [128] = 'SIGILL',

lua/cp/restore.lua

@@ -5,15 +5,11 @@ local logger = require('cp.log')
 local state = require('cp.state')
 
 function M.restore_from_current_file()
-  local current_file = vim.fn.expand('%:p')
-  if current_file == '' then
-    logger.log('No file is currently open.', vim.log.levels.ERROR)
-    return false
-  end
-
   cache.load()
+
+  local current_file = vim.fn.expand('%:p')
   local file_state = cache.get_file_state(current_file)
-  if not file_state then
+  if current_file or not file_state then
     logger.log('No cached state found for current file.', vim.log.levels.ERROR)
     return false
   end
@@ -27,13 +23,9 @@ function M.restore_from_current_file()
   )
 
   local setup = require('cp.setup')
-  if not setup.set_platform(file_state.platform) then
+  local _ = setup.set_platform(file_state.platform)
-    return false
-  end
-
   state.set_contest_id(file_state.contest_id)
   state.set_problem_id(file_state.problem_id)
-
   setup.setup_contest(file_state.platform, file_state.contest_id, file_state.problem_id)
 
   return true

lua/cp/runner/execute.lua

@@ -7,26 +7,28 @@
 ---@field peak_mb number
 ---@field signal string|nil
 
+---@class SubstitutableCommand
+---@field source string substituted via '{source}'
+---@field binary string substitued via '{binary}'
+
 local M = {}
 local constants = require('cp.constants')
 local logger = require('cp.log')
 local utils = require('cp.utils')
 
-local filetype_to_language = constants.filetype_to_language
+---@param cmd_template string[]
-
+---@param substitutions SubstitutableCommand
-local function get_language_from_file(source_file, contest_config)
+---@return string[] string normalized with substitutions
-  local ext = vim.fn.fnamemodify(source_file, ':e')
-  return filetype_to_language[ext] or contest_config.default_language
-end
-
 local function substitute_template(cmd_template, substitutions)
   local out = {}
-  for _, a in ipairs(cmd_template) do
+  for _, arg in ipairs(cmd_template) do
-    local s = a
+    if arg == '{source}' and substitutions.source then
-    for k, v in pairs(substitutions) do
+      table.insert(out, substitutions.source)
-      s = s:gsub('{' .. k .. '}', v)
+    elseif arg == '{binary}' and substitutions.binary then
+      table.insert(out, substitutions.binary)
+    else
+      table.insert(out, arg)
     end
-    table.insert(out, s)
   end
   return out
 end
@@ -39,12 +41,10 @@ function M.build_command(cmd_template, executable, substitutions)
   return cmd
 end
 
-function M.compile(language_config, substitutions)
+---@param compile_cmd string[]
-  if not language_config.compile then
+---@param substitutions SubstitutableCommand
-    return { code = 0, stdout = '' }
+function M.compile(compile_cmd, substitutions)
-  end
+  local cmd = substitute_template(compile_cmd, substitutions)
-
-  local cmd = substitute_template(language_config.compile, substitutions)
   local sh = table.concat(cmd, ' ') .. ' 2>&1'
 
   local t0 = vim.uv.hrtime()
@@ -164,32 +164,19 @@ function M.run(cmd, stdin, timeout_ms, memory_mb)
   }
 end
 
-function M.compile_problem(contest_config, is_debug)
+function M.compile_problem()
   local state = require('cp.state')
-  local source_file = state.get_source_file()
-  if not source_file then
-    return { success = false, output = 'No source file found.' }
-  end
 
-  local language = get_language_from_file(source_file, contest_config)
+  local config = require('cp.config').get_config()
-  local language_config = contest_config[language]
+  local platform = state.get_platform() or ''
-  if not language_config then
+  local language = config.platforms[platform].default_language
-    return { success = false, output = ('No configuration for language %s.'):format(language) }
+  local compile_config = config.platforms[platform][language].compile
-  end
+  if not compile_config then
-
-  local binary_file = state.get_binary_file()
-  local substitutions = { source = source_file, binary = binary_file }
-
-  local chosen = (is_debug and language_config.debug) and language_config.debug
-    or language_config.compile
-  if not chosen then
     return { success = true, output = nil }
   end
 
-  local saved = language_config.compile
+  local substitutions = { source = state.get_source_file(), binary = state.get_binary_file() }
-  language_config.compile = chosen
+  local r = M.compile(compile_config, substitutions)
-  local r = M.compile(language_config, substitutions)
-  language_config.compile = saved
 
   if r.code ~= 0 then
     return { success = false, output = r.stdout or 'unknown error' }

lua/cp/runner/run.lua

@@ -31,8 +31,11 @@
 
 local M = {}
 local cache = require('cp.cache')
+local config = require('cp.config').get_config()
 local constants = require('cp.constants')
+local execute = require('cp.runner.execute')
 local logger = require('cp.log')
+local state = require('cp.state')
 
 ---@type RunPanelState
 local run_panel_state = {
@@ -90,42 +93,35 @@ local function create_sentinal_panel_data(test_cases)
   return out
 end
 
----@param language_config LanguageConfig
+---@param cmd string[]
----@param substitutions table<string, string>
+---@param executable string
 ---@return string[]
-local function build_command(language_config, substitutions)
+local function build_command(cmd, executable, substitutions)
-  local execute = require('cp.runner.execute')
+  return execute.build_command(cmd, executable, substitutions)
-  return execute.build_command(language_config.test, language_config.executable, substitutions)
 end
 
----@param contest_config ContestConfig
----@param cp_config cp.Config
 ---@param test_case RanTestCase
 ---@return { status: "pass"|"fail"|"tle"|"mle", actual: string, actual_highlights: Highlight[], error: string, stderr: string, time_ms: number, code: integer, ok: boolean, signal: string, tled: boolean, mled: boolean, rss_mb: number }
-local function run_single_test_case(contest_config, cp_config, test_case)
+local function run_single_test_case(test_case)
-  local state = require('cp.state')
-  local exec = require('cp.runner.execute')
-
   local source_file = state.get_source_file()
-  local ext = vim.fn.fnamemodify(source_file or '', ':e')
-  local lang_name = constants.filetype_to_language[ext] or contest_config.default_language
-  local language_config = contest_config[lang_name]
 
   local binary_file = state.get_binary_file()
   local substitutions = { source = source_file, binary = binary_file }
 
-  local cmd = build_command(language_config, substitutions)
+  local platform_config = config.platforms[state.get_platform() or '']
+  local language_config = platform_config[platform_config.default_language]
+  local cmd = build_command(language_config.test, language_config.executable, substitutions)
   local stdin_content = (test_case.input or '') .. '\n'
   local timeout_ms = (run_panel_state.constraints and run_panel_state.constraints.timeout_ms) or 0
   local memory_mb = run_panel_state.constraints and run_panel_state.constraints.memory_mb or 0
 
-  local r = exec.run(cmd, stdin_content, timeout_ms, memory_mb)
+  local r = execute.run(cmd, stdin_content, timeout_ms, memory_mb)
 
   local ansi = require('cp.ui.ansi')
   local out = r.stdout or ''
   local highlights = {}
   if out ~= '' then
-    if cp_config.run_panel.ansi then
+    if config.run_panel.ansi then
       local parsed = ansi.parse_ansi_text(out)
       out = table.concat(parsed.lines, '\n')
       highlights = parsed.highlights
@@ -134,7 +130,7 @@ local function run_single_test_case(contest_config, cp_config, test_case)
     end
   end
 
-  local max_lines = cp_config.run_panel.max_output_lines
+  local max_lines = config.run_panel.max_output_lines
   local lines = vim.split(out, '\n')
   if #lines > max_lines then
     local trimmed = {}
@@ -180,9 +176,8 @@ local function run_single_test_case(contest_config, cp_config, test_case)
   }
 end
 
----@param state table
 ---@return boolean
-function M.load_test_cases(state)
+function M.load_test_cases()
   local tcs = cache.get_test_cases(
     state.get_platform() or '',
     state.get_contest_id() or '',
@@ -201,18 +196,16 @@ function M.load_test_cases(state)
   return #tcs > 0
 end
 
----@param contest_config ContestConfig
----@param cp_config cp.Config
 ---@param index number
 ---@return boolean
-function M.run_test_case(contest_config, cp_config, index)
+function M.run_test_case(index)
   local tc = run_panel_state.test_cases[index]
   if not tc then
     return false
   end
 
   tc.status = 'running'
-  local r = run_single_test_case(contest_config, cp_config, tc)
+  local r = run_single_test_case(tc)
 
   tc.status = r.status
   tc.actual = r.actual
@@ -230,13 +223,11 @@ function M.run_test_case(contest_config, cp_config, index)
   return true
 end
 
----@param contest_config ContestConfig
----@param cp_config cp.Config
 ---@return RanTestCase[]
-function M.run_all_test_cases(contest_config, cp_config)
+function M.run_all_test_cases()
   local results = {}
   for i = 1, #run_panel_state.test_cases do
-    M.run_test_case(contest_config, cp_config, i)
+    M.run_test_case(i)
     results[i] = run_panel_state.test_cases[i]
   end
   return results

lua/cp/scraper.lua

@@ -4,7 +4,6 @@ local utils = require('cp.utils')
 
 local function syshandle(result)
   if result.code ~= 0 then
-    vim.print(('<%s>'):format(result.stderr))
     local msg = 'Scraper failed: ' .. (result.stderr or 'Unknown error')
     return { success = false, error = msg }
   end

lua/cp/setup.lua

@@ -42,19 +42,13 @@ end
 ---@param contest_id string
 ---@param problem_id string|nil
 function M.setup_contest(platform, contest_id, problem_id)
-  local config = config_module.get_config()
-  if not vim.tbl_contains(config.scrapers, platform) then
-    logger.log(('Scraping disabled for %s.'):format(platform), vim.log.levels.WARN)
-    return
-  end
-
   state.set_contest_id(contest_id)
   cache.load()
 
   local function proceed(contest_data)
     local problems = contest_data.problems
     local pid = problems[(problem_id and contest_data.index_map[problem_id] or 1)].id
-    M.setup_problem(pid, language)
+    M.setup_problem(pid)
 
     local cached_len = #vim.tbl_filter(function(p)
       return not vim.tbl_isempty(cache.get_test_cases(platform, contest_id, p.id))
@@ -96,8 +90,7 @@ function M.setup_contest(platform, contest_id, problem_id)
 end
 
 ---@param problem_id string
----@param language? string
+function M.setup_problem(problem_id)
-function M.setup_problem(problem_id, language)
   local platform = state.get_platform()
   if not platform then
     logger.log('No platform set.', vim.log.levels.ERROR)
@@ -111,10 +104,8 @@ function M.setup_problem(problem_id, language)
   vim.schedule(function()
     vim.cmd.only({ mods = { silent = true } })
 
+    local language = config.platforms[platform].default_language
     local source_file = state.get_source_file(language)
-    if not source_file then
-      return
-    end
     vim.cmd.e(source_file)
     local source_buf = vim.api.nvim_get_current_buf()
 

lua/cp/ui/panel.lua

@@ -90,10 +90,8 @@ function M.toggle_interactive()
   vim.cmd(('mksession! %s'):format(state.saved_interactive_session))
   vim.cmd('silent only')
 
-  local config = config_module.get_config()
-  local contest_config = config.platforms[state.get_platform() or '']
   local execute = require('cp.runner.execute')
-  local compile_result = execute.compile_problem(contest_config, false)
+  local compile_result = execute.compile_problem()
   if not compile_result.success then
     require('cp.runner.run').handle_compilation_failure(compile_result.output)
     return
@@ -120,7 +118,8 @@ function M.toggle_interactive()
   state.set_active_panel('interactive')
 end
 
-function M.toggle_run_panel(is_debug)
+---@param debug? boolean
+function M.toggle_run_panel(debug)
   if state.get_active_panel() == 'run' then
     if current_diff_layout then
       current_diff_layout.cleanup()
@@ -191,7 +190,7 @@ function M.toggle_run_panel(is_debug)
   if config.hooks and config.hooks.before_run then
     config.hooks.before_run(state)
   end
-  if is_debug and config.hooks and config.hooks.before_debug then
+  if debug and config.hooks and config.hooks.before_debug then
     config.hooks.before_debug(state)
   end
 
@@ -199,7 +198,7 @@ function M.toggle_run_panel(is_debug)
   local input_file = state.get_input_file()
   logger.log(('run panel: checking test cases for %s'):format(input_file or 'none'))
 
-  if not run.load_test_cases(state) then
+  if not run.load_test_cases() then
     logger.log('no test cases found', vim.log.levels.WARN)
     return
   end
@@ -284,10 +283,9 @@ function M.toggle_run_panel(is_debug)
   setup_keybindings_for_buffer(test_buffers.tab_buf)
 
   local execute = require('cp.runner.execute')
-  local contest_config = config.platforms[state.get_platform() or '']
+  local compile_result = execute.compile_problem()
-  local compile_result = execute.compile_problem(contest_config, is_debug)
   if compile_result.success then
-    run.run_all_test_cases(contest_config, config)
+    run.run_all_test_cases()
   else
     run.handle_compilation_failure(compile_result.output)
   end