74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
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package utils
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import (
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"errors"
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"regexp"
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)
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// HandleRegexp handles a regex with named capture groups.
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// If the given regexp does not have any named capture group, or if no match is found, an error is returned
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// Matches are returned as a map which keys are the capture groups names
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func HandleRegexp(dat string, pattern regexp.Regexp) (res []map[string]string, err error) {
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namedGroups := 0
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for _, n := range pattern.SubexpNames() {
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if n != "" {
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namedGroups++
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}
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}
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if namedGroups == 0 {
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return nil, errors.New("no named subgroup in pattern")
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}
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matches := pattern.FindAllStringSubmatch(dat, -1)
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if matches == nil {
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return nil, errors.New("no match found")
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}
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res = make([]map[string]string, 0)
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for _, line := range matches {
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subMatchMap := make(map[string]string)
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for i, name := range pattern.SubexpNames() {
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if i != 0 {
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subMatchMap[name] = string(line[i])
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}
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}
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res = append(res, subMatchMap)
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}
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return
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}
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// HandleKeyValRegexRes merges a list of maps containing result as a key/value format
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//
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// Input maps all have the following format:
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//
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// {
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// "key": "some_key",
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// "value": "some_val",
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// }
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//
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// Final result will have the format
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//
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// {
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// "some_key": "some_val",
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// }
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func HandleKeyValRegexRes(rawMatches []map[string]string) map[string]string {
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matchedMap := make(map[string]string)
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for _, m := range rawMatches {
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currKey := ""
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currVal := ""
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for k, v := range m {
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if k == "key" {
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currKey = v
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} else if k == "value" {
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currVal = v
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}
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// All other keys are ignored
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// Should not happen given the given regexp
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}
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if currKey != "" && currVal != "" {
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matchedMap[currKey] = currVal
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}
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}
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return matchedMap
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}
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