Fix panic bug in handling multiple references in commit (#13486)
* Fix panic bug in handling multiple references in commit The issue lay in determining the position of matches on a second run round a commit message in FindAllIssueReferences. Fix #13483 Signed-off-by: Andrew Thornton <art27@cantab.net> * Extract function and make testable Signed-off-by: Andrew Thornton <art27@cantab.net> * Fix the comment Signed-off-by: Andrew Thornton <art27@cantab.net> * cleaning up the comments a bit more Signed-off-by: Andrew Thornton <art27@cantab.net>
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2 changed files with 95 additions and 29 deletions
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@ -235,40 +235,78 @@ func findAllIssueReferencesMarkdown(content string) []*rawReference {
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return findAllIssueReferencesBytes(bcontent, links)
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}
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func convertFullHTMLReferencesToShortRefs(re *regexp.Regexp, contentBytes *[]byte) {
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// We will iterate through the content, rewrite and simplify full references.
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//
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// We want to transform something like:
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//
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// this is a https://ourgitea.com/git/owner/repo/issues/123456789, foo
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// https://ourgitea.com/git/owner/repo/pulls/123456789
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//
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// Into something like:
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//
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// this is a #123456789, foo
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// !123456789
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pos := 0
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for {
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// re looks for something like: (\s|^|\(|\[)https://ourgitea.com/git/(owner/repo)/(issues)/(123456789)(?:\s|$|\)|\]|[:;,.?!]\s|[:;,.?!]$)
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match := re.FindSubmatchIndex((*contentBytes)[pos:])
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if match == nil {
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break
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}
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// match is a bunch of indices into the content from pos onwards so
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// to simplify things let's just add pos to all of the indices in match
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for i := range match {
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match[i] += pos
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}
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// match[0]-match[1] is whole string
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// match[2]-match[3] is preamble
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// move the position to the end of the preamble
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pos = match[3]
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// match[4]-match[5] is owner/repo
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// now copy the owner/repo to end of the preamble
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endPos := pos + match[5] - match[4]
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copy((*contentBytes)[pos:endPos], (*contentBytes)[match[4]:match[5]])
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// move the current position to the end of the newly copied owner/repo
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pos = endPos
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// Now set the issue/pull marker:
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//
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// match[6]-match[7] == 'issues'
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(*contentBytes)[pos] = '#'
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if string((*contentBytes)[match[6]:match[7]]) == "pulls" {
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(*contentBytes)[pos] = '!'
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}
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pos++
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// Then add the issue/pull number
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//
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// match[8]-match[9] is the number
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endPos = pos + match[9] - match[8]
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copy((*contentBytes)[pos:endPos], (*contentBytes)[match[8]:match[9]])
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// Now copy what's left at the end of the string to the new end position
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copy((*contentBytes)[endPos:], (*contentBytes)[match[9]:])
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// now we reset the length
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// our new section has length endPos - match[3]
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// our old section has length match[9] - match[3]
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(*contentBytes) = (*contentBytes)[:len((*contentBytes))-match[9]+endPos]
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pos = endPos
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}
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}
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// FindAllIssueReferences returns a list of unvalidated references found in a string.
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func FindAllIssueReferences(content string) []IssueReference {
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// Need to convert fully qualified html references to local system to #/! short codes
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contentBytes := []byte(content)
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if re := getGiteaIssuePullPattern(); re != nil {
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pos := 0
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for {
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match := re.FindSubmatchIndex(contentBytes[pos:])
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if match == nil {
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break
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}
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// match[0]-match[1] is whole string
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// match[2]-match[3] is preamble
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pos += match[3]
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// match[4]-match[5] is owner/repo
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endPos := pos + match[5] - match[4]
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copy(contentBytes[pos:endPos], contentBytes[match[4]:match[5]])
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pos = endPos
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// match[6]-match[7] == 'issues'
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contentBytes[pos] = '#'
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if string(contentBytes[match[6]:match[7]]) == "pulls" {
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contentBytes[pos] = '!'
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}
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pos++
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// match[8]-match[9] is the number
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endPos = pos + match[9] - match[8]
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copy(contentBytes[pos:endPos], contentBytes[match[8]:match[9]])
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copy(contentBytes[endPos:], contentBytes[match[9]:])
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// now we reset the length
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// our new section has length endPos - match[3]
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// our old section has length match[9] - match[3]
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contentBytes = contentBytes[:len(contentBytes)-match[9]+endPos]
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pos = endPos
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}
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convertFullHTMLReferencesToShortRefs(re, &contentBytes)
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} else {
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log.Debug("No GiteaIssuePullPattern pattern")
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}
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@ -5,6 +5,7 @@
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package references
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import (
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"regexp"
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"testing"
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"code.gitea.io/gitea/modules/setting"
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@ -29,6 +30,26 @@ type testResult struct {
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TimeLog string
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}
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func TestConvertFullHTMLReferencesToShortRefs(t *testing.T) {
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re := regexp.MustCompile(`(\s|^|\(|\[)` +
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regexp.QuoteMeta("https://ourgitea.com/git/") +
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`([0-9a-zA-Z-_\.]+/[0-9a-zA-Z-_\.]+)/` +
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`((?:issues)|(?:pulls))/([0-9]+)(?:\s|$|\)|\]|[:;,.?!]\s|[:;,.?!]$)`)
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test := `this is a https://ourgitea.com/git/owner/repo/issues/123456789, foo
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https://ourgitea.com/git/owner/repo/pulls/123456789
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And https://ourgitea.com/git/owner/repo/pulls/123
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`
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expect := `this is a owner/repo#123456789, foo
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owner/repo!123456789
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And owner/repo!123
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`
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contentBytes := []byte(test)
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convertFullHTMLReferencesToShortRefs(re, &contentBytes)
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result := string(contentBytes)
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assert.EqualValues(t, expect, result)
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}
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func TestFindAllIssueReferences(t *testing.T) {
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fixtures := []testFixture{
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@ -106,6 +127,13 @@ func TestFindAllIssueReferences(t *testing.T) {
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{202, "user4", "repo5", "202", true, XRefActionNone, nil, nil, ""},
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},
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},
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{
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"This http://gitea.com:3000/user4/repo5/pulls/202 yes. http://gitea.com:3000/user4/repo5/pulls/203 no",
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[]testResult{
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{202, "user4", "repo5", "202", true, XRefActionNone, nil, nil, ""},
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{203, "user4", "repo5", "203", true, XRefActionNone, nil, nil, ""},
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},
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},
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{
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"This http://GiTeA.COM:3000/user4/repo6/pulls/205 yes.",
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[]testResult{
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