ojcmp

online judge comparer

Status

Maintaining 0.4.0

Install

cargo install ojcmp

Build

cargo build --release

Install by cargo

cargo install --path .

Install manually

cp target/release/ojcmp /usr/bin

Usage

ojcmp 0.4.0
Nugine <nugine@foxmail.com>
USAGE:
ojcmp <SUBCOMMAND>
FLAGS:
-h, --help Prints help information
-V, --version Prints version information
SUBCOMMANDS:
float Float compare
help Prints this message or the help of the given subcommand(s)
normal Normal compare
strict Strict compare

ojcmp-normal 0.4.0
Normal compare
USAGE:
ojcmp normal [FLAGS] [OPTIONS] <--std <path>|--std-fd <fd>> <--user <path>|--user-fd <fd>>
FLAGS:
-h, --help Prints help information
-q, --quiet No output printed to stdout or stderr
-a, --read-all Reads all bytes of user file even if it's already WA
-V, --version Prints version information
OPTIONS:
-b, --buffer-size <bytes> Buffer size (in bytes) for both std and user file [default: 65536]
-s, --std <path> Std file path
--std-fd <fd> Std file descriptor
-u, --user <path> User file path
--user-fd <fd> User file descriptor

Return Value

type	value
exit_code (AC)	0
exit_code (WA)	1
exit_code (PE)	2
exit_code (error)	101
stdout	"AC" / "WA" / "PE"
stderr	error message

Current Implementation

Mode: Normal

trim_end(file)

judge!(AC,b"1\r\n\r\n\r\n",b"1 ");

for each line, trim_end(line)

judge!(AC,b"1 \n",b"1");

for each line, check spaces between non-space chars

judge!(PE,b"1 3\n",b"1 3\n");

Mode: Strict

User file must have the same bytes with std file.

The two byte streams must be exactly the same.

There is no "PE" in this mode.

Mode: Float

Compare two streams of float numbers which are splitted by ascii whitespaces.

Parse any float number as f64 (aka double in C language).

Ascii whitespaces between two float numbers are considered as a single separator symbol.

Use CLI option --eps to specify eps value, for example --eps 1e-3.

There is no "PE" in this mode.

Change Log

• v0.4.0 Allow passing file fd. Change return value to indicate comparison result.

• v0.3.2 Fix unsoundness in ByteReader.
• v0.3.1 Fix performance regression since v0.2.0. Allow unsafe code.
• v0.3.0 Forbid unsafe code. Use subcommands for different modes.

• v0.2.2 Fix bug in nan handling. (yank v0.2.1)
• v0.2.1 Add spj_float mode. (yanked)
• v0.2.0 Add strict mode. No break changes.

• v0.1.3 No functional changes
• v0.1.2 Fix algorithm bug
• v0.1.1 Use unsafe static buffer