Vim plugin for CodeForces

What allows to do

• Watch standings of contests (Unofficial, Friends, Official, Room)
• Submit source code (thanks to CountZero)
• Watch result of last user's submissions (Results)
• Load text of problems (Russian | English)
• Download last submission of user to problem (qwerty787788's solution to F)

UPD (28.05.2015)

After fixing bug of csrf-token contest list(with count of solved problems) and getting friends doesn't work. I wish I can fix it, but help me if you can. Also standings-with-friends can fail if you have many friends(cauze of get-request length restriction). Before contest I advice you to refresh all data, related to you, some values can expire(except for user-agent, ofc) suddenly. Read about these variables below I didn't test it in trains, but it shouldn't work in not public contests at all except for submit, but after update I'm not sure

What I'm planning to do

• Full coloring of standings (I tested it on 10k users, it runs veryveryvery slow. So, I leave it as it is or, please, say how to do it in other way)
• Room standings Done
• Parsing sapmles and automatic testing like (C|J)Helper does. In progress...
• Deleting unused code, local uncludes (C++) (You can watch here, script, which 'links' your code in specific format)
• Change tabnew to user-defined command Done.
• ...

Using and configuring

Installation

• Use your favourite plugin manager, for example Bundle 'Igorjan94/codeforces.vim', then :PluginInstall
• Just clone rep to your .vim/ directory

all variables and functions have name with prefix 'CodeForces'

Dependencies

• Python
  • requests (all network)
  • HTMLparser (loadProblem, loadSubmission, loadFriends)
• EasyAlign for beautiful standings

Variables

set count of users on one page to 40(default 30):

• let g:CodeForcesCount = 40

set current round to 518(default doesn't exists):

• let g:CodeForcesContestId = 518

set interval results are updating after submit to 1 second(default 2):

• let g:CodeForcesUpdateInterval = 1

set count of displayed submissions to 10(default 5):

• let g:CodeForcesCountOfSubmits = 10

set domain to 'com'(default 'ru'):

• let g:CodeForcesDomain = 'com'

show unofficial(default false):

• let g:CodeForcesShowUnofficial = 1

show only friends(default false):

• let g:CodeForcesFriends = 1

set values to submit:

Cookies in opera
You should copy X-User value(92 hex digits) and JSession(32 hex digits and '-n1'), csrf-token(C^U in browser and look at first lines on source code of any cf-page) and cookie with name 39ce7(may work without it) and userAgent string (C-S-I in browser, console, navigator.useragent)

• let g:CodeForcesJSessionId = [x] * 32 -n1
• let g:CodeForcesUserAgent = "Opera/9.80 (X11; Linux x86_64) Presto/2.12.388 Version/12.16"
• let g:CodeForces39ce7 = CF [x] * 6
• let g:CodeForcesXUser = [x] * 92
• let g:CodeForcesToken = [x] * 32

set command to open standings/problem/submission (default 'tabnew'):

• let g:CodeForcesCommandStandings = 'badd'
• let g:CodeForcesCommandLoadTask = 'badd'
• let g:CodeForcesCommandSubmission= 'badd'

set your handle:

• let g:CodeForcesUsername = 'Igorjan94'

there is (now) two formats of parsing contest:

• /index (default) format: directory/{index}/{{index}.{ext}, {index}.problem, input{index}.in, output{index}.out}, where {index} = A, B ...
• smthng else format: all files in one directory

set contest format to second one:

• let g:CodeForcesContestFormat = 'smthngelse'

set filename to sample-input (default 'input'):

• let g:CodeForcesInput = 'sampleInput'

set filename to sample-output (default 'output'):

• let g:CodeForcesOutput = 'sampleOutput'

set filename to user-output (default 'my_output'):

• let g:CodeForcesUserOutput = 'myCorrectOutput'

template file to copy in directory with samples/problem statement:

• let g:CodeForcesTemplate = '/some/long/path/to/template.cpp

change language to russian:

• let g:CodeForcesLang = 'ru'

Functions

Next standings page:

• :CodeForcesNextStandings

Prev standings page:

• :CodeForcesPrevStandings

Get 10 standings page:

• :CodeForcesPageStandings 10

Get standings 518 (if contestId is not set, then g:CodeForcesContestId):

• :CodeForcesStandings 518

Get friends (needs XUser and JSession): !!!DOESN'T WORK NOW!!!

• :CodeForcesLoadFriends

Show friends if not shown and vice versa:

• :CodeForcesFriendsSet

Show unofficial if not shown and vice versa:

• :CodeForcesUnofficial

Set g:CodeForcesContestId to contestId:

• :CodeForcesSetRound 518

Just beautiful standings:

• :CodeForcesColor

Load last submission under cursor(like ctrl-click in browser):

• :CodeForcesSubmission

Get last submissions:

• :CodeForcesUserSubmissions

Submit opened file as problem B1 to 513 round (needs XUser and JSession):

• :CodeForcesSubmitIndexed 513 B1

Submit opened file to g:CodeForcesContestId round (needs XUser and JSession):

• :CodeForcesSubmit

Load problem B from g:CodeForcesContestId:

• :CodeForcesLoadTask B

Load problem B from g:CodeForcesContestId with parsing tests:

• :CodeForcesLoadTaskWithTests B

Load problem B from contest 510 with/without tests:

• :CodeForcesLoadTaskContestId 510 B True/False

Parse contest:

• :CodeForcesParseContest

Test program on samples:

• :CodeForcesTest

Get list of contests: (count of solved problems doesn't work!!!)

• :CodeForcesContestList
• :CodeForcesContestListNext
• :CodeForcesContestListPrev

Bindings

Of course, bind it like you want, I just suggest this:

• nmap <leader>cfr <ESC>:CodeForcesSet_R_ound
• nmap <leader>cfS <ESC>:CodeForces_S_ubmission<CR>
• nmap <leader>cfp <ESC>:CodeForces_P_revStandings<CR>
• nmap <leader>cfn <ESC>:CodeForces_N_extStandings<CR>
• nmap <leader>cfs <ESC>:CodeForces_S_tandings<CR>
• nmap <leader>cff <ESC>:CodeForces_F_riendsSet<CR>
• nmap <leader>cfu <ESC>:CodeForces_U_nofficial<CR>
• nmap <leader>cfl <ESC>:CodeForces_L_oadTask
• nmap <leader>cfP <ESC>:CodeForces_P_ageStandings
• nmap <leader>cfR <ESC>:CodeForces_R_oomStandings
• nmap <leader>cfA <ESC>:CodeForcesP_a_rseContest
• nmap <leader>cft <ESC>:CodeForces_T_est
• nmap <leader>cfcl <ESC>:CodeForces_C_ontest_L_ist<CR>
• nmap <leader>cfcn <ESC>:CodeForces_C_ontestList_N_ext<CR>
• nmap <leader>cfcp <ESC>:CodeForces_C_ontestList_P_rev<CR>
• nmap <leader>cfF <ESC>:CodeForcesLoad_F_riends<CR>

I think <S-F5> very difficult to press ocasionally, so:

• noremap <S-F5> <ESC>:w<CR><ESC>:CodeForcesSubmit<CR>
• noremap <S-F6> <ESC>:w<CR><ESC>:CodeForcesUserSubmissions<CR>

Other

Folder CF:
codeforces.standings -- file to store standings

codeforces.users -- file with colors. In next versions will be command-generated, now by hand. Let's color users how you want! Format: handle Color

codeforces.friends -- file with friends. Simple list Color = { Red, Yellow, Purple, Blue, Green, Gray, Unrated }

Known bugs features

• It doesn't check any information entered by user
• Submission for teams doesn't work
• THEY MUST BE, I just haven't found'em

Authors

Igor Kolobov, aka Igorjan94

cf: Igorjan94
mail: Igorjan94@{mail.ru, gmail.com}
github: Igorjan94

Trung Nguyen

cf: I_love_Hoang_Yen
github: ngthanhtrung23