initial public release

internal/docx/style.go

@@ -0,0 +1,141 @@
+package docx
+
+import (
+	"regexp"
+	"sort"
+	"strings"
+)
+
+// StyleProfile represents the writing style characteristics of a resume.
+type StyleProfile struct {
+	ActionVerbs    []string // top 20 most frequent action verbs from bullet starts
+	SummaryStyle   string   // first 2 sentences from any "Summary" or "Profile" section
+	BulletPatterns []string // first 5 words of each bullet (up to 30 bullets)
+}
+
+// StyleExtractor analyzes parsed resume markdown text.
+type StyleExtractor struct {
+	markdown string
+}
+
+// NewStyleExtractor creates a new style extractor for the given markdown.
+func NewStyleExtractor(markdown string) *StyleExtractor {
+	return &StyleExtractor{markdown: markdown}
+}
+
+// Extract analyzes the markdown and returns a StyleProfile.
+func (s *StyleExtractor) Extract() StyleProfile {
+	return StyleProfile{
+		ActionVerbs:    s.extractActionVerbs(),
+		SummaryStyle:   s.extractSummary(),
+		BulletPatterns: s.extractBulletPatterns(),
+	}
+}
+
+// extractActionVerbs finds lines starting with bullet points, extracts the first word
+// (action verb), deduplicates, and returns the top 20 by frequency.
+func (s *StyleExtractor) extractActionVerbs() []string {
+	lines := strings.Split(s.markdown, "\n")
+	verbCount := make(map[string]int)
+
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		// Match lines starting with "- " or "* "
+		if strings.HasPrefix(line, "- ") {
+			line = strings.TrimPrefix(line, "- ")
+		} else if strings.HasPrefix(line, "* ") {
+			line = strings.TrimPrefix(line, "* ")
+		} else {
+			continue
+		}
+
+		// Extract first word
+		fields := strings.Fields(line)
+		if len(fields) > 0 {
+			verb := strings.ToLower(fields[0])
+			verbCount[verb]++
+		}
+	}
+
+	// Sort by frequency (descending) and then alphabetically for stability
+	type verbFreq struct {
+		verb  string
+		count int
+	}
+	var sorted []verbFreq
+	for verb, count := range verbCount {
+		sorted = append(sorted, verbFreq{verb, count})
+	}
+
+	sort.Slice(sorted, func(i, j int) bool {
+		if sorted[i].count != sorted[j].count {
+			return sorted[i].count > sorted[j].count
+		}
+		return sorted[i].verb < sorted[j].verb
+	})
+
+	var result []string
+	for i, vf := range sorted {
+		if i >= 20 {
+			break
+		}
+		result = append(result, vf.verb)
+	}
+	return result
+}
+
+// extractSummary finds a heading matching Summary|Profile|About|Objective and
+// returns the next 2 non-empty lines.
+func (s *StyleExtractor) extractSummary() string {
+	lines := strings.Split(s.markdown, "\n")
+	headingRegex := regexp.MustCompile(`(?i)^\s*#+\s+(summary|profile|about|objective)\s*$`)
+
+	for i, line := range lines {
+		if headingRegex.MatchString(line) {
+			// Collect next 2 non-empty lines
+			var summaryLines []string
+			for j := i + 1; j < len(lines) && len(summaryLines) < 2; j++ {
+				trimmed := strings.TrimSpace(lines[j])
+				if trimmed != "" && !strings.HasPrefix(trimmed, "#") {
+					summaryLines = append(summaryLines, trimmed)
+				}
+			}
+			if len(summaryLines) > 0 {
+				return strings.Join(summaryLines, " ")
+			}
+		}
+	}
+	return ""
+}
+
+// extractBulletPatterns extracts the first 5 words of each bullet line (up to 30 bullets).
+func (s *StyleExtractor) extractBulletPatterns() []string {
+	lines := strings.Split(s.markdown, "\n")
+	var patterns []string
+
+	for _, line := range lines {
+		if len(patterns) >= 30 {
+			break
+		}
+		line = strings.TrimSpace(line)
+		// Match lines starting with "- " or "* "
+		if strings.HasPrefix(line, "- ") {
+			line = strings.TrimPrefix(line, "- ")
+		} else if strings.HasPrefix(line, "* ") {
+			line = strings.TrimPrefix(line, "* ")
+		} else {
+			continue
+		}
+
+		// Extract first 5 words
+		fields := strings.Fields(line)
+		if len(fields) > 5 {
+			fields = fields[:5]
+		}
+		if len(fields) > 0 {
+			pattern := strings.Join(fields, " ")
+			patterns = append(patterns, pattern)
+		}
+	}
+	return patterns
+}