Sources/OrgSwift/Tables.swift

 1import Foundation
 2
 3func isTableLine(_ line: String) -> Bool {
 4    line.hasPrefix("|") && line.hasSuffix("|")
 5}
 6
 7func parseTableRow(_ line: String) -> [String] {
 8    line
 9        .split(separator: "|", omittingEmptySubsequences: false)
10        .dropFirst()
11        .dropLast()
12        .map { String($0).trimmingCharacters(in: .whitespaces) }
13}
14
15func parseOrgTableSeparatorRow(_ line: String) -> [String] {
16    var content = line.trimmingCharacters(in: .whitespaces)
17    if content.hasPrefix("|") {
18        content.removeFirst()
19    }
20    if content.hasSuffix("|") {
21        content.removeLast()
22    }
23    return content
24        .split(separator: "+", omittingEmptySubsequences: false)
25        .map { String($0).trimmingCharacters(in: .whitespaces) }
26}
27
28func isTableSeparatorCell(_ cell: String) -> Bool {
29    tableAlignment(for: cell) != nil
30}
31
32func tableAlignment(for cell: String) -> String? {
33    let trimmed = cell.trimmingCharacters(in: .whitespaces)
34    guard !trimmed.isEmpty else { return nil }
35
36    let core = trimmed.replacingOccurrences(of: ":", with: "")
37    guard !core.isEmpty, core.allSatisfy({ $0 == "-" || $0 == "+" }) else {
38        return nil
39    }
40
41    let isLeftAligned = trimmed.hasPrefix(":")
42    let isRightAligned = trimmed.hasSuffix(":")
43    switch (isLeftAligned, isRightAligned) {
44    case (true, true):
45        return "center"
46    case (true, false):
47        return "left"
48    case (false, true):
49        return "right"
50    case (false, false):
51        return ""
52    }
53}