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Code Issues Packages Projects Releases Wiki Activity

Improving reg ex doc

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This commit is contained in:
Mike Farah
2021-07-16 10:18:25 +10:00
parent 2f0fe8aa13
commit 171ca2e053
2 changed files with 58 additions and 62 deletions
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pkg/yqlib/doc/String Operators.md
+50 -50
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@@ -45,18 +45,18 @@ foo bar FOO
```
then
```bash
yq eval 'match("(?i)foo"; "g")' sample.yml
yq eval '[match("(?i)foo"; "g")]' sample.yml
```
will output
```yaml
string: foo
offset: 0
length: 3
captures: []
string: FOO
offset: 8
length: 3
captures: []
- string: foo
offset: 0
length: 3
captures: []
- string: FOO
offset: 8
length: 3
captures: []
```
## Match with capture groups
@@ -66,24 +66,24 @@ abc abc
```
then
```bash
yq eval 'match("(abc)+"; "g")' sample.yml
yq eval '[match("(abc)+"; "g")]' sample.yml
```
will output
```yaml
string: abc
offset: 0
length: 3
captures:
- string: abc
offset: 0
length: 3
string: abc
offset: 4
length: 3
captures:
- string: abc
offset: 4
length: 3
- string: abc
offset: 0
length: 3
captures:
- string: abc
offset: 0
length: 3
- string: abc
offset: 4
length: 3
captures:
- string: abc
offset: 4
length: 3
```
## Match with named capture groups
@@ -93,26 +93,26 @@ foo bar foo foo foo
```
then
```bash
yq eval 'match("foo (?P<bar123>bar)? foo"; "g")' sample.yml
yq eval '[match("foo (?P<bar123>bar)? foo"; "g")]' sample.yml
```
will output
```yaml
string: foo bar foo
offset: 0
length: 11
captures:
- string: bar
offset: 4
length: 3
name: bar123
string: foo foo
offset: 12
length: 8
captures:
- string: null
offset: -1
length: 0
name: bar123
- string: foo bar foo
offset: 0
length: 11
captures:
- string: bar
offset: 4
length: 3
name: bar123
- string: foo foo
offset: 12
length: 8
captures:
- string: null
offset: -1
length: 0
name: bar123
```
## Capture named groups into a map
@@ -154,18 +154,18 @@ cat cat
```
then
```bash
yq eval 'match("cat"; "g")' sample.yml
yq eval '[match("cat"; "g")]' sample.yml
```
will output
```yaml
string: cat
offset: 0
length: 3
captures: []
string: cat
offset: 4
length: 3
captures: []
- string: cat
offset: 0
length: 3
captures: []
- string: cat
offset: 4
length: 3
captures: []
```
## Test using regex