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Can handle arrays
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17
README.md
17
README.md
@ -13,3 +13,20 @@ E.g.:
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yaml sample.yaml b.c
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yaml sample.yaml b.c
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```
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```
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will output the value of '2'.
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will output the value of '2'.
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Arrays:
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Just use the index to access a specific element:
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e.g.: given
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```
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b:
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e:
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- name: fred
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value: 3
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- name: sam
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value: 4
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```
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then
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```
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yaml sample.yaml b.e.1.name
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```
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will output 'sam'
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@ -2,3 +2,8 @@ a: Easy! as one two three
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b:
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b:
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c: 2
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c: 2
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d: [3, 4]
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d: [3, 4]
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e:
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- name: fred
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value: 3
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- name: sam
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value: 4
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30
yaml.go
30
yaml.go
@ -8,6 +8,7 @@ import (
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"os"
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"os"
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"github.com/codegangsta/cli"
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"github.com/codegangsta/cli"
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"strings"
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"strings"
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"strconv"
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)
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)
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func main() {
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func main() {
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@ -33,7 +34,7 @@ func read_property(c *cli.Context) {
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var path = c.Args()[1]
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var path = c.Args()[1]
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var paths = strings.Split(path, ".")
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var paths = strings.Split(path, ".")
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fmt.Println(read(parsed_data, paths[0], paths[1:len(paths)]))
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fmt.Println(read_map(parsed_data, paths[0], paths[1:len(paths)]))
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}
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}
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func read_yaml(c *cli.Context, parsed_data *map[interface{}]interface{}) {
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func read_yaml(c *cli.Context, parsed_data *map[interface{}]interface{}) {
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@ -61,11 +62,34 @@ func read_file(filename string) []byte {
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return raw_data
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return raw_data
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}
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}
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func read(context map[interface{}]interface{}, head string, tail []string) interface{} {
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func read_map(context map[interface{}]interface{}, head string, tail []string) interface{} {
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value := context[head]
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value := context[head]
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if (len(tail) > 0) {
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if (len(tail) > 0) {
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return read(value.(map[interface{}]interface{}), tail[0], tail[1:len(tail)])
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return recurse(value, tail[0], tail[1:len(tail)])
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} else {
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} else {
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return value
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return value
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}
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}
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}
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}
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func recurse(value interface{}, head string, tail []string) interface{} {
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switch value.(type) {
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case []interface {}:
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index, err := strconv.ParseInt(head, 10, 64)
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if err != nil {
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log.Fatalf("Error accessing array: %v", err)
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}
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return read_array(value.([]interface {}), index, tail)
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default:
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return read_map(value.(map[interface{}]interface{}), head, tail)
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}
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}
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func read_array(array []interface {}, head int64, tail[]string) interface{} {
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value := array[head]
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if (len(tail) > 0) {
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return recurse(value, tail[0], tail[1:len(tail)])
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} else {
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return value
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}
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}
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