| 1 | package changelog |
| 2 | |
| 3 | import ( |
| 4 | "regexp" |
| 5 | "sort" |
| 6 | "strconv" |
| 7 | "strings" |
| 8 | ) |
| 9 | |
| 10 | var branchRes = []*regexp.Regexp{ |
| 11 | regexp.MustCompile(`(?m)Squashed from (\S+) into`), |
| 12 | regexp.MustCompile(`(?m)^Merge branch '([^']+)'(?: into \S+)?$`), |
| 13 | regexp.MustCompile(`(?m)^Merge pull request #\d+ from [^/\s]+/(\S+)`), |
| 14 | } |
| 15 | |
| 16 | // BranchName is the branch a first-parent commit landed, read from the |
| 17 | // message Amadan's squash, Amadan's merge or GitHub's merge button wrote, |
| 18 | // or "" for a commit made on main directly. |
| 19 | func BranchName(message string) string { |
| 20 | for _, re := range branchRes { |
| 21 | if m := re.FindStringSubmatch(message); m != nil { |
| 22 | return m[1] |
| 23 | } |
| 24 | } |
| 25 | return "" |
| 26 | } |
| 27 | |
| 28 | var refRes = []*regexp.Regexp{ |
| 29 | regexp.MustCompile(`#(\d+)\b`), |
| 30 | regexp.MustCompile(`(?i)\bdiscussion (\d+)\b`), |
| 31 | } |
| 32 | |
| 33 | // DiscussionRefs is every number a message points at as a discussion. |
| 34 | // Some are GitHub issue or PR numbers from before Amadan; Build keeps |
| 35 | // only those Amadan knows and created before the commit. |
| 36 | func DiscussionRefs(message string) []int { |
| 37 | seen := map[int]bool{} |
| 38 | for _, re := range refRes { |
| 39 | for _, m := range re.FindAllStringSubmatch(message, -1) { |
| 40 | if n, err := strconv.Atoi(m[1]); err == nil && n > 0 { |
| 41 | seen[n] = true |
| 42 | } |
| 43 | } |
| 44 | } |
| 45 | out := make([]int, 0, len(seen)) |
| 46 | for n := range seen { |
| 47 | out = append(out, n) |
| 48 | } |
| 49 | sort.Ints(out) |
| 50 | return out |
| 51 | } |
| 52 | |
| 53 | // Notes is a release's published notes, in one of two shapes. |
| 54 | type Notes struct { |
| 55 | // Form is "bullets" for the v0.19.0-on shape, which the page renders |
| 56 | // as lists with links per bullet, or "markdown" for older free-form |
| 57 | // notes, rendered whole. |
| 58 | Form string `json:"form"` |
| 59 | Sections []NoteSection `json:"sections,omitempty"` |
| 60 | MD string `json:"md,omitempty"` |
| 61 | } |
| 62 | |
| 63 | type NoteSection struct { |
| 64 | Title string `json:"title"` |
| 65 | Bullets []Bullet `json:"bullets"` |
| 66 | } |
| 67 | |
| 68 | type Bullet struct { |
| 69 | MD string `json:"md"` |
| 70 | // Items is the bullet's nested list, one markdown string per item, in |
| 71 | // order. It is optional: a reader that predates it renders MD alone. |
| 72 | Items []string `json:"items,omitempty"` |
| 73 | Lead string `json:"-"` |
| 74 | Branches []string `json:"branches,omitempty"` |
| 75 | Docs []string `json:"docs,omitempty"` |
| 76 | } |
| 77 | |
| 78 | var ( |
| 79 | headerLineRe = regexp.MustCompile(`^carlos v\d+\.\d+\.\d+ \(platform `) |
| 80 | sectionRe = regexp.MustCompile(`^\*\*([^*]+)\*\*\s*$`) |
| 81 | leadRe = regexp.MustCompile(`^\*\*(.+?)\*\*`) |
| 82 | headingRe = regexp.MustCompile(`^(#{1,6})(\s)`) |
| 83 | nestedItemRe = regexp.MustCompile(`^(?: +|\t+)[-*+]\s+(.*)$`) |
| 84 | ) |
| 85 | |
| 86 | // ParseNotes reads a release body. The boilerplate every release repeats |
| 87 | // (the header line, the download-verification line, an Install section, |
| 88 | // a "Generated with Claude Code" footer) is dropped; the page links the |
| 89 | // published release for those. |
| 90 | func ParseNotes(body string) *Notes { |
| 91 | body = strings.ReplaceAll(body, "\r\n", "\n") |
| 92 | lines := strings.Split(body, "\n") |
| 93 | first := "" |
| 94 | for _, l := range lines { |
| 95 | if strings.TrimSpace(l) != "" { |
| 96 | first = strings.TrimSpace(l) |
| 97 | break |
| 98 | } |
| 99 | } |
| 100 | if headerLineRe.MatchString(first) && strings.Contains(body, "\n- **") { |
| 101 | return parseBullets(lines) |
| 102 | } |
| 103 | return &Notes{Form: "markdown", MD: parseMarkdown(lines)} |
| 104 | } |
| 105 | |
| 106 | func boilerplate(l string) bool { |
| 107 | t := strings.TrimSpace(l) |
| 108 | return headerLineRe.MatchString(t) || |
| 109 | strings.HasPrefix(t, "Verify a download against") || |
| 110 | strings.HasPrefix(t, "đŸ¤– Generated with") |
| 111 | } |
| 112 | |
| 113 | func parseBullets(lines []string) *Notes { |
| 114 | n := &Notes{Form: "bullets"} |
| 115 | cur := &NoteSection{} |
| 116 | var b *Bullet |
| 117 | // gap is a blank line since b's last line. The bullet stays open |
| 118 | // across it, so an indented list after the blank still nests under it; |
| 119 | // any other line after a gap closes the bullet, as a blank line always |
| 120 | // did. inItem is whether b's last line belongs to its last nested item. |
| 121 | gap, inItem := false, false |
| 122 | flush := func() { |
| 123 | if b != nil { |
| 124 | b.MD = strings.TrimSpace(b.MD) |
| 125 | for i := range b.Items { |
| 126 | b.Items[i] = strings.TrimSpace(b.Items[i]) |
| 127 | } |
| 128 | cur.Bullets = append(cur.Bullets, *b) |
| 129 | b = nil |
| 130 | } |
| 131 | gap, inItem = false, false |
| 132 | } |
| 133 | for _, l := range lines { |
| 134 | t := strings.TrimSpace(l) |
| 135 | switch { |
| 136 | case boilerplate(l): |
| 137 | flush() |
| 138 | case strings.HasPrefix(l, "- "): |
| 139 | flush() |
| 140 | md := strings.TrimSpace(l[2:]) |
| 141 | b = &Bullet{MD: md} |
| 142 | if m := leadRe.FindStringSubmatch(md); m != nil { |
| 143 | b.Lead = m[1] |
| 144 | } |
| 145 | case b != nil && nestedItemRe.MatchString(l): |
| 146 | b.Items = append(b.Items, nestedItemRe.FindStringSubmatch(l)[1]) |
| 147 | gap, inItem = false, true |
| 148 | case sectionRe.MatchString(t): |
| 149 | flush() |
| 150 | if len(cur.Bullets) > 0 || cur.Title != "" { |
| 151 | n.Sections = append(n.Sections, *cur) |
| 152 | } |
| 153 | cur = &NoteSection{Title: sectionRe.FindStringSubmatch(t)[1]} |
| 154 | case t == "": |
| 155 | if b != nil { |
| 156 | gap = true |
| 157 | } |
| 158 | case b != nil && gap: |
| 159 | flush() |
| 160 | case b != nil && inItem: |
| 161 | b.Items[len(b.Items)-1] += "\n" + t |
| 162 | case b != nil: |
| 163 | b.MD += "\n" + t |
| 164 | } |
| 165 | } |
| 166 | flush() |
| 167 | if len(cur.Bullets) > 0 || cur.Title != "" { |
| 168 | n.Sections = append(n.Sections, *cur) |
| 169 | } |
| 170 | return n |
| 171 | } |
| 172 | |
| 173 | // parseMarkdown keeps an older body whole, minus the boilerplate, with |
| 174 | // its headings demoted two levels: on the page the release itself is the |
| 175 | // h2, so the notes' own "##" becomes an h4. Headings inside fences are |
| 176 | // left alone. |
| 177 | func parseMarkdown(lines []string) string { |
| 178 | var out []string |
| 179 | inFence, skipping := "", false |
| 180 | for _, l := range lines { |
| 181 | t := strings.TrimSpace(l) |
| 182 | if inFence == "" && (strings.HasPrefix(t, "```") || strings.HasPrefix(t, "~~~")) { |
| 183 | inFence = t[:3] |
| 184 | } else if inFence != "" && strings.HasPrefix(t, inFence) { |
| 185 | inFence = "" |
| 186 | if !skipping { |
| 187 | out = append(out, l) |
| 188 | } |
| 189 | continue |
| 190 | } |
| 191 | if inFence == "" { |
| 192 | if m := headingRe.FindStringSubmatch(l); m != nil { |
| 193 | skipping = strings.EqualFold(strings.TrimSpace(l[len(m[1]):]), "Install") |
| 194 | if !skipping { |
| 195 | level := len(m[1]) + 2 |
| 196 | if level > 6 { |
| 197 | level = 6 |
| 198 | } |
| 199 | l = strings.Repeat("#", level) + l[len(m[1]):] |
| 200 | } |
| 201 | } |
| 202 | if !skipping && boilerplate(l) { |
| 203 | continue |
| 204 | } |
| 205 | } |
| 206 | if !skipping { |
| 207 | out = append(out, l) |
| 208 | } |
| 209 | } |
| 210 | return strings.TrimSpace(strings.Join(out, "\n")) |
| 211 | } |
| 212 | |
| 213 | var codeSpanRe = regexp.MustCompile("`(carlos [^`]+)`") |
| 214 | |
| 215 | // CLIDocLinks links each `carlos …` code span in md to the CLI page's |
| 216 | // most specific heading that prefixes it, word by word. cliHeadings maps |
| 217 | // heading text ("carlos store scan") to its anchor. |
| 218 | func CLIDocLinks(md string, cliHeadings map[string]string) []string { |
| 219 | var out []string |
| 220 | seen := map[string]bool{} |
| 221 | for _, m := range codeSpanRe.FindAllStringSubmatch(md, -1) { |
| 222 | words := strings.Fields(m[1]) |
| 223 | for n := len(words); n >= 2; n-- { |
| 224 | if a, ok := cliHeadings[strings.Join(words[:n], " ")]; ok { |
| 225 | link := "/docs/cli#" + a |
| 226 | if !seen[link] { |
| 227 | seen[link] = true |
| 228 | out = append(out, link) |
| 229 | } |
| 230 | break |
| 231 | } |
| 232 | } |
| 233 | } |
| 234 | return out |
| 235 | } |
| 236 | |
amadan