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expr: implement regular expressions

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Arcterus 2016-12-02 14:06:21 -08:00 • committed by Alex Lyon
parent eb75085595
commit 9abc3208d3
10 changed files with 318 additions and 221 deletions
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5
src/expr/expr.rs
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@ -11,6 +11,7 @@
#[macro_use]
extern crate uucore;
extern crate onig;
mod tokens;
mod syntax_tree;
@ -95,9 +96,9 @@ separates increasing precedence groups. EXPRESSION may be:
ARG1 / ARG2 arithmetic quotient of ARG1 divided by ARG2
ARG1 % ARG2 arithmetic remainder of ARG1 divided by ARG2
STRING : REGEXP [NOT IMPLEMENTED] anchored pattern match of REGEXP in STRING
STRING : REGEXP anchored pattern match of REGEXP in STRING
match STRING REGEXP [NOT IMPLEMENTED] same as STRING : REGEXP
match STRING REGEXP same as STRING : REGEXP
substr STRING POS LENGTH substring of STRING, POS counted from 1
index STRING CHARS index in STRING where any CHARS is found, or 0
length STRING length of STRING