Function EscapeStrForCSV

be/src/gutil/strings/escaping.cc:41–58

---------------------------------------------------------------------- EscapeStrForCSV() Escapes the quotes in 'src' by doubling them. This is necessary for generating CSV files (see SplitCSVLine). Returns the number of characters written into dest (not counting the \0) or -1 if there was insufficient space. Dest could end up twice as long as src. Example: [some "string" to test] --> [some ""stri

//    Example: [some "string" to test] --> [some ""string"" to test]
// ----------------------------------------------------------------------
int EscapeStrForCSV(const char* src, char* dest, int dest_len) {
  int used = 0;

  while (true) {
    if (*src == '\0' && used < dest_len) {
      dest[used] = '\0';
      return used;
    }

    if (used + 1 >= dest_len)  // +1 because we might require two characters
      return -1;

    if (*src == '"')
      dest[used++] = '"';

    dest[used++] = *src++;
  }
}

// ----------------------------------------------------------------------
// UnescapeCEscapeSequences()