Question

我使用Swiftcsv库来解析CSV文件。如何忽略DoubleQuotes中字符串的逗号分隔符，例如“Abcd，去了Apple”？这里解析器将 Abcd 作为一个值，作为另一个值转到Apple 。

代码：

func parseRows(fromLines lines: [String]) -> [Dictionary<String, String>] { var rows: [Dictionary<String, String>] = [] for (lineNumber, line) in enumerate(lines) { if lineNumber == 0 { continue } var row = Dictionary<String, String>() let values = line.componentsSeparatedByCharactersInSet(self.delimiter) for (index, header) in enumerate(self.headers) { let value = values[index] row[header] = value } rows.append(row) } return rows }

如何更改 line.componentsSeparatedByCharactersInSet（self.delimiter）以忽略Doublequotes中的逗号？

Answer 1

使用此代替https://github.com/Daniel1of1/CSwiftV

有同样的问题。我花了一个小时左右的时间来弄清楚问题是SwiftCSV没有，呃，工作。

CSV文件中的文字在引号内，因此CSV中的逗号和换行符不会搞砸解析器。我查看了SwiftCSV源代码并且没有支持 - 这意味着任何逗号或换行符都会破坏解析。

您可以修补SwiftCSV，或者只使用上面链接的 CSwiftV 。

Answer 2

我不知道您是否仍在寻找解决方案，但我想出了一个快速的方法来解决这个问题，因为这是我遇到的问题。

代码不是完全证明，因为我只是将它用于辅助项目，所以如果你想处理更多的情况，你可能需要做一些改变。

    func parseRows(fromLines lines: [String]) -> [Dictionary<String, String>] {
    var rows: [Dictionary<String, String>] = []

    for (lineNumber, line) in enumerate(lines) {
        if lineNumber == 0 {
            continue
        }

        var row = Dictionary<String, String>()

        // escape commas in the string when it is surrounded by quotes 

        let convertedLine = NSString(string: line) // have to convert string to NSString because string does not have all NSString API

        var escapedLine = line

        var searchRange = NSMakeRange(1,convertedLine.length)
        var foundRange:NSRange

        if NSString(string: line).containsString("\"")
        {
            while (searchRange.location < convertedLine.length) {
                searchRange.length = convertedLine.length-searchRange.location
                foundRange = convertedLine.rangeOfString("\"", options: nil, range: searchRange)
                if (foundRange.location != NSNotFound) {
                    // found a quotation mark
                    searchRange.location = foundRange.location+foundRange.length
                    let movieTitle = convertedLine.substringToIndex(foundRange.location)

                    escapedLine = convertedLine.stringByReplacingOccurrencesOfString(",", withString: "&c", options: nil, range: NSMakeRange(0,foundRange.location))
                } else {
                    // no more substring to find
                    break
                }
            }
        }

        var values = escapedLine.componentsSeparatedByCharactersInSet(self.delimiter)

        for (index, header) in enumerate(self.headers) {
            var value = values[index]

            //reinsert commas if they were escaped and get rid of quotation marks
            value = value.stringByReplacingOccurrencesOfString("\"", withString: "")
            value = value.stringByReplacingOccurrencesOfString("&c", withString: ",")

            row[header] = value
        }
        rows.append(row)
    }

    return rows
}

Swift Csv Parser支持Double Quotes

2 个答案: