suyiiyii/yq
1
0
Fork 0
mirror of https://github.com/mikefarah/yq.git synced 2026-06-29 08:38:48 +00:00
Code Issues Packages Projects Releases Wiki Activity

S2-S4: tighten lexer condition, fix doc header, add Unicode example

Browse Source 
Agent-Logs-Url: https://github.com/mikefarah/yq/sessions/ec06083e-e20a-45d2-bf7e-4e1fa7be1073

Co-authored-by: mikefarah <1151925+mikefarah@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2026-04-06 08:45:00 +00:00 committed by GitHub
parent 1afa3c73dc
commit adb150d1fb
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
3 changed files with 24 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
pkg/yqlib/doc/operators/headers/slice-array.md
View File

@ -1,4 +1,4 @@
# Slice/Splice Array or String
# Slice Array or String
The slice operator works on both arrays and strings. Like the `jq` equivalent, `.[10:15]` will return a subarray (or substring) of length 5, starting from index 10 inclusive, up to index 15 exclusive. Negative numbers count backwards from the end of the array or string.

18
pkg/yqlib/doc/operators/slice-array.md
View File

@ -1,4 +1,4 @@
# Slice/Splice Array or String
# Slice Array or String
The slice operator works on both arrays and strings. Like the `jq` equivalent, `.[10:15]` will return a subarray (or substring) of length 5, starting from index 10 inclusive, up to index 15 exclusive. Negative numbers count backwards from the end of the array or string.
@ -165,3 +165,19 @@ will output
ralia
```
## Slicing strings - Unicode
Indices are rune-based, so multibyte characters are handled correctly
Given a sample.yml file of:
```yaml
greeting: héllo
```
then
```bash
yq '.greeting[1:3]' sample.yml
```
will output
```yaml
él
```

7
pkg/yqlib/lexer.go
View File

@ -127,10 +127,15 @@ func handleToken(tokens []*token, index int, postProcessedTokens []*token) (toke
if tokenIsOpType(currentToken, createMapOpType) {
log.Debugf("tokenIsOpType: createMapOpType")
// check the previous token is '[', means we are slice, but dont have a first number
if index > 0 && (tokens[index-1].TokenType == traverseArrayCollect || tokens[index-1].TokenType == openCollect) {
if index > 0 && tokens[index-1].TokenType == traverseArrayCollect {
log.Debugf("previous token is : traverseArrayOpType")
// need to put the number 0 before this token, as that is implied
postProcessedTokens = append(postProcessedTokens, &token{TokenType: operationToken, Operation: createValueOperation(0, "0")})
} else if index >= 2 && tokens[index-1].TokenType == openCollect &&
(tokens[index-2].TokenType == operationToken || tokens[index-2].TokenType == closeCollect || tokens[index-2].TokenType == closeCollectObject) {
log.Debugf("previous token is : openCollect following a traversal, implying 0 start")
// need to put the number 0 before this token, as that is implied
postProcessedTokens = append(postProcessedTokens, &token{TokenType: operationToken, Operation: createValueOperation(0, "0")})
}
}