API client to develop tools for competitive programming
Project description
online-judge-tools/api-client
What is this?
This is an API client for various online judges, used as the backend library of oj
command.
You can use the Python library (onlinejudge
module) and the command-line interface (oj-api
command) which talks JSON compatible with jmerle/competitive-companion.
How to install
$ pip3 install online-judge-api-client
Supported websites
website | get sample cases | get system cases | get metadata | get contest data | login service | submit code |
---|---|---|---|---|---|---|
Aizu Online Judge | :heavy_check_mark: | :heavy_check_mark: | ||||
Anarchy Golf | :heavy_check_mark: | :grey_question: (same to samples) | ||||
AtCoder | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
AtCoder Problems (virtual contests) | :heavy_check_mark: | |||||
CodeChef | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :grey_question: | ||
Codeforces | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :x: issue | |
CS Academy | :heavy_check_mark: | |||||
Facebook Hacker Cup | :heavy_check_mark: | |||||
Google Code Jam | :heavy_check_mark: | |||||
Google Kick Start | :heavy_check_mark: | |||||
HackerRank | :heavy_check_mark: | :heavy_check_mark: | :grey_question: | :heavy_check_mark: | ||
Kagamiz Contest System | :x: | :grey_question: | :heavy_check_mark: | |||
Kattis | :heavy_check_mark: | |||||
Library Checker | :heavy_check_mark: | :heavy_check_mark: | ||||
PKU JudgeOnline | :heavy_check_mark: | |||||
Sphere Online Judge | :heavy_check_mark: | |||||
Topcoder | :heavy_check_mark: (archived problems only) | :grey_question: | ||||
Toph | :heavy_check_mark: | :grey_question: | :heavy_check_mark: | |||
yukicoder | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :grey_question: | :heavy_check_mark: |
Instead of login-service
, you can use oj
command with Selenium as oj login https://...
. This can login almost all services.
Supported subcommands of oj-api
command
get-problem
oj-api get-problem PROBLEM_URL
parses the given problem and prints the results as JSON compatible with jmerle/competitive-companion.
options
--system
: get system cases, instead of sample cases--full
: dump all additional data
format
url
: the URL of the problemname
: the name of the problem. This doesn't include alphabets (e.g. just "Xor Sum" is used instead of "D. Xor Sum") because such alphabets are attributes belonging to the relation between problems and contests rather than belonging to only problems. (not compatible to jmerle/competitive-companion)context
:contest
(optional): -url
: the URL of the contest -name
: the name of the contestalphabet
(optional): the alphabet of the problem in the contest
memoryLimit
: the memory limit in megabytes (MB); not mebibytes (MiB). They sometimes become non-integers, but be rounded down for the compatibility reason with jmerle/competitive-companion.timeLimit
: the time limit in milliseconds (msec)tests
:input
: the input of the test caseoutput
: the output of the test case
format (additional)
tests
:name
(optional, when--system
): the name of the system case (e.g.random-004.in
,fft_killer_01
,99_hand.txt
)
availableLanguages
(optional, when--full
):id
: the ID of language to submit the server (e.g.3003
)description
: the description of the language to show to users (e.g.C++14 (GCC 5.4.1)
)
raw
(optional, when--full
):html
(optional): the raw HTML used internally. This might contain sensitive info like CSRF tokens.json
(optional): the raw JSON used internally. This might contain sensitive info like access tokens.- etc.
example
$ oj-api get-problem https://atcoder.jp/contests/arc100/tasks/arc100_b | jq .result
{
"url": "https://atcoder.jp/contests/arc100/tasks/arc100_b",
"name": "Equal Cut",
"context": {
"contest": {
"url": "https://atcoder.jp/contests/arc100",
"name": "AtCoder Regular Contest 100"
},
"alphabet": "D"
},
"memoryLimit": 1024,
"timeLimit": 2000,
"tests": [
{
"input": "5\n3 2 4 1 2\n",
"output": "2\n"
},
{
"input": "10\n10 71 84 33 6 47 23 25 52 64\n",
"output": "36\n"
},
{
"input": "7\n1 2 3 1000000000 4 5 6\n",
"output": "999999994\n"
}
]
}
get-problem --compatibility
oj-api get-problem --compatibility PROBLEM_URL
is the variant of get-problem
strictly compatible with jmerle/competitive-companion.
format
See the document of jmerle/competitive-companion.
example
{
"name": "D. Equal Cut",
"group": "AtCoder Regular Contest 100",
"url": "https://atcoder.jp/contests/arc100/tasks/arc100_b",
"interactive": false,
"memoryLimit": 1024,
"timeLimit": 2000,
"tests": [
{
"input": "5\n3 2 4 1 2\n",
"output": "2\n"
},
{
"input": "10\n10 71 84 33 6 47 23 25 52 64\n",
"output": "36\n"
},
{
"input": "7\n1 2 3 1000000000 4 5 6\n",
"output": "999999994\n"
}
],
"testType": "single",
"input": {
"type": "stdin"
},
"output": {
"type": "stdout"
},
"languages": {
"java": {
"mainClass": "Main",
"taskClass": "Task"
}
}
}
get-contest
oj-api get-contest CONTEST_URL
parses the given contest and prints the results as JSON.
format
url
: the URL of the contestname
: the name of the contestproblems
: problems. For details, see the description ofget-problem
.
example
$ oj-api get-contest https://atcoder.jp/contests/arc100 | jq .result
{
"url": "https://atcoder.jp/contests/arc100",
"name": "AtCoder Regular Contest 100",
"problems": [
{
"url": "https://atcoder.jp/contests/arc100/tasks/arc100_a",
"name": "Linear Approximation",
"context": {
"contest": {
"url": "https://atcoder.jp/contests/arc100",
"name": "AtCoder Regular Contest 100"
},
"alphabet": "C"
}
},
{
"url": "https://atcoder.jp/contests/arc100/tasks/arc100_b",
"name": "Equal Cut",
"context": {
"contest": {
"url": "https://atcoder.jp/contests/arc100",
"name": "AtCoder Regular Contest 100"
},
"alphabet": "D"
}
},
{
"url": "https://atcoder.jp/contests/arc100/tasks/arc100_c",
"name": "Or Plus Max",
"context": {
"contest": {
"url": "https://atcoder.jp/contests/arc100",
"name": "AtCoder Regular Contest 100"
},
"alphabet": "E"
}
},
{
"url": "https://atcoder.jp/contests/arc100/tasks/arc100_d",
"name": "Colorful Sequences",
"context": {
"contest": {
"url": "https://atcoder.jp/contests/arc100",
"name": "AtCoder Regular Contest 100"
},
"alphabet": "F"
}
}
]
}
get-service
oj-api get-service SERVICE_URL
prints the data of the service.
options
--list-contests
: list all contests in the service
format
url
: the URL of the servicename
: the name of the servicecontests
(when--list-contests
): contests. For details, see the description ofget-problem
.
example
$ oj-api get-service https://atcoder.jp/ --list-contests | jq .result
{
"url": "https://atcoder.jp/",
"name": "AtCoder",
"contests": [
{
"url": "https://atcoder.jp/contests/abc162",
"name": "AtCoder Beginner Contest 162"
},
{
"url": "https://atcoder.jp/contests/judge-update-202004",
"name": "Judge System Update Test Contest 202004"
},
{
"url": "https://atcoder.jp/contests/abc161",
"name": "AtCoder Beginner Contest 161"
},
{
"url": "https://atcoder.jp/contests/abc160",
"name": "AtCoder Beginner Contest 160"
},
...
]
}
login-service
USERNAME=USERNAME PASSWORD=PASSWORD oj-api login-service SERVICE_URL
logs in the given service.
options
--check
: only check whether you are already logged in, without trying to log in
format
loggedIn
: the result
example
$ USERNAME=kimiyuki PASSWORD='????????????????' oj-api login-service https://atcoder.jp/ | jq .result
{
"loggedIn": true
}
submit-code
oj-api submit-code PROBLEM_URL --file FILE --language LANGUAGE_ID
submits the file to the given problem.
You can obtrain the LANGUAGE_ID
from the list availableLanguages
of oj-api get-problem --full PROBLEM_URL
or the guess-language-id
subcommand.
format
url
: the URL of the submission result
example
$ oj-api submit-code https://atcoder.jp/contests/abc160/tasks/abc160_a --file main.py --language 3023 | jq .result
{
"url": "https://atcoder.jp/contests/abc160/submissions/11991846"
}
guess-language-id
oj-api guess-language-id PROBLEM_URL --file FILE
guesses the language id to submit the file to the given problem.
format
id
: the language iddescription
: the description of the language id
example
$ oj-api guess-language-id http://codeforces.com/contest/1373/problem/A --file=main.py | jq .result
{
"id": "31",
"description": "Python 3.7.2",
}
JSON API responses
format
status
: the status. This containsok
if the subcommand succeeded.messages
: error messagesresult
: the result
example
$ USERNAME=chokudai PASSWORD=hoge oj-api login-service https://atcoder.jp/ | jq .
{
"status": "error",
"messages": [
"onlinejudge.type.LoginError: failed to login"
],
"result": null
}
Tips
For end-users who don't develop any programs:
- Please use the
oj
command instead of thisoj-api
command.- The
oj-api
command is intended to be used as a backend of other programs. It's not a frontend which humans use directly.
- The
For developers of programs which use oj-api
:
- Please be polite to judge servers.
- We are accessing the web pages using the unintended way, i.e. without GUI browsers. We should not forget that this is basically not welcomed.
- Please be aware that this package uses Semantic Versioning.
- The "public API" of this package is the documented features of
oj-api
command and the documented modules ofonlinejudge
module.
- The "public API" of this package is the documented features of
- You can also use the
oj login
command to login servers with GUI browsers.- The implementation around authentication is very complicated and fragile. For example, Codeforces has four methods to login: password, Gmail, Facebook, and ICPC. So we need to use GUI browsers for the development cost and stability.
- This feature of
oj login
might be imported tooj-api
command in the future.
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