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Center alignment for fmt

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Use '^' to specify center alignment in format strings.

fmt!( "[{:^5s}]", "Hi" ) -> "[ Hi  ]"
fmt!( "[{:^5s}]", "H" )  -> "[  H  ]"
fmt!( "[{:^5d}]", 1i )   -> "[  1  ]"
fmt!( "[{:^5d}]", -1i )  -> "[ -1  ]"
fmt!( "[{:^6d}]", 1i )   -> "[  1   ]"
fmt!( "[{:^6d}]", -1i )  -> "[  -1  ]"

If the padding is odd then the padding on the right will be one
character longer than the padding on the left.

Tuples squashed
This commit is contained in:
wickerwaka 2014-08-30 11:27:02 -07:00
parent 6d8b5c9f7d
commit 2bc4a5e92a
6 changed files with 33 additions and 9 deletions
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5
src/test/run-pass/ifmt.rs
View file

@ -90,11 +90,16 @@ pub fn main() {
t!(format!("{:4s}", "a"), "a ");
t!(format!("{:>4s}", "a"), " a");
t!(format!("{:<4s}", "a"), "a ");
t!(format!("{:^5s}", "a"), " a ");
t!(format!("{:^5s}", "aa"), " aa ");
t!(format!("{:^4s}", "a"), " a ");
t!(format!("{:^4s}", "aa"), " aa ");
t!(format!("{:.4s}", "a"), "a");
t!(format!("{:4.4s}", "a"), "a ");
t!(format!("{:4.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:<4.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:>4.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:^4.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:>10.4s}", "aaaaaaaaaaaaaaaaaa"), "aaaa");
t!(format!("{:2.4s}", "aaaaa"), "aaaa");
t!(format!("{:2.4s}", "aaaa"), "aaaa");