// HC017: Non-ASCII Quotes detection
// Detects fancy quotes like " " ' ' and reports their locations.
static box RuleNonAsciiQuotesBox {
  apply(text, path, out) {
    if text == null { return 0 }
    local lines = me._split_lines(text)
    local i = 0
    while i < lines.size() {
      local ln = lines.get(i)
      if me._has_fancy_quote(ln) == 1 {
        out.push("[HC017] non-ASCII quotes detected: " + path + ":" + me._itoa(i+1))
      }
      i = i + 1
    }
    return 0
  }
  _has_fancy_quote(s) {
    if s == null { return 0 }
    // Check for common fancy quotes: U+201C/U+201D/U+2018/U+2019
    if s.indexOf(""") >= 0 { return 1 }
    if s.indexOf(""") >= 0 { return 1 }
    if s.indexOf("'") >= 0 { return 1 }
    if s.indexOf("'") >= 0 { return 1 }
    return 0
  }
  _split_lines(s) { local arr=new ArrayBox(); if s==null {return arr} local n=s.length(); local last=0; local i=0; loop(i<n){ local ch=s.substring(i,i+1); if ch=="\n" { arr.push(s.substring(last,i)); last=i+1 } i=i+1 } if last<=n { arr.push(s.substring(last)) } return arr }
  _itoa(n) { local v=0+n; if v==0 { return "0" } local out=""; local digits="0123456789"; local tmp=""; while v>0 { local d=v%10; tmp=digits.substring(d,d+1)+tmp; v=v/10 } out=tmp; return out }
}

static box RuleNonAsciiQuotesMain { method main(args) { return 0 } }