使用 REGEX 忽略特定单词后需要文本

Question

I would like to extract words after ignoring certain key words.

I want to ignore supplied by or supplied by M/S until the end of line.

Input Text

Remittance Advice

This section includes details as supplied by M/S MOBIS INDIA LIMITED

This section includes details as supplied by MANDO AUTOMOTIVE INDIA LIMITED

This section includes details as supplied by MAHINDRA AND MAHINDRA AUTO SECTOR

Expected Output

MOBIS INDIA LIMITED

MANDO AUTOMOTIVE INDIA LIMITED

MAHINDRA AND MAHINDRA AUTO SECTOR

I have given something like this

(?<=(supplied by.)|(supplied by M/S.)).*

Appreciate help here.

Answer 1

If you want a match only, you can use lookarounds, and optionally match M/S in the lookbehind and asserting that when starting the match it is not going to be M/S

(?<=supplied by\s+(?:M/S\s+)?)\S(?<!\s+M(?=/S\s)).+

The pattern matches:

• (?<= Positive lookbehind
  • supplied by\\s+ Match literally followed by 1+ whitespace chars
  • (?:M/S\\s+)? Optionally match M/S and 1+ whitespace chars
• ) Close lookbehind
• \\S Match a non whitespace character
• (?<! Negative lookbehind
  • \\s+M(?=/S\\s) Match 1+ whitespace chars, M and assert S followed by a whitespace char
• ) Close lookbehind
• .+ Match 1+ times any character

.NET regex demo

Another way to write it could be matching 1+ non whitespace chars followed by asserting a whitespace boundary to the right, and then assert that directly to the left is not M/S

(?<=supplied by\s+(?:M/S\s+)?)\S+(?!\S)(?<!M/S).+

See another .NET regex demo

Another option is to use a capture group instead:

\bsupplied by(?:\s+M\/S)?\s+(.+)

Regex demo