const char* lodepng_error_text(unsigned code)
{
  switch(code)
  {
    case 0: return "no error, everything went ok";
    case 1: return "nothing done yet"; /*the Encoder/Decoder has done nothing yet, error checking makes no sense yet*/
    case 10: return "end of input memory reached without huffman end code"; /*while huffman decoding*/
    case 11: return "error in code tree made it jump outside of huffman tree"; /*while huffman decoding*/
    case 13: return "problem while processing dynamic deflate block";
    case 14: return "problem while processing dynamic deflate block";
    case 15: return "problem while processing dynamic deflate block";
    case 16: return "unexisting code while processing dynamic deflate block";
    case 17: return "end of out buffer memory reached while inflating";
    case 18: return "invalid distance code while inflating";
    case 19: return "end of out buffer memory reached while inflating";
    case 20: return "invalid deflate block BTYPE encountered while decoding";
    case 21: return "NLEN is not ones complement of LEN in a deflate block";
     /*end of out buffer memory reached while inflating:
     This can happen if the inflated deflate data is longer than the amount of bytes required to fill up
     all the pixels of the image, given the color depth and image dimensions. Something that doesn't
     happen in a normal, well encoded, PNG image.*/
    case 22: return "end of out buffer memory reached while inflating";
    case 23: return "end of in buffer memory reached while inflating";
    case 24: return "invalid FCHECK in zlib header";
    case 25: return "invalid compression method in zlib header";
    case 26: return "FDICT encountered in zlib header while it's not used for PNG";
    case 27: return "PNG file is smaller than a PNG header";
    /*Checks the magic file header, the first 8 bytes of the PNG file*/
    case 28: return "incorrect PNG signature, it's no PNG or corrupted";
    case 29: return "first chunk is not the header chunk";
    case 30: return "chunk length too large, chunk broken off at end of file";
    case 31: return "illegal PNG color type or bpp";
    case 32: return "illegal PNG compression method";
    case 33: return "illegal PNG filter method";
    case 34: return "illegal PNG interlace method";
    case 35: return "chunk length of a chunk is too large or the chunk too small";
    case 36: return "illegal PNG filter type encountered";
    case 37: return "illegal bit depth for this color type given";
    case 38: return "the palette is too big"; /*more than 256 colors*/
    case 39: return "more palette alpha values given in tRNS chunk than there are colors in the palette";
    case 40: return "tRNS chunk has wrong size for greyscale image";
    case 41: return "tRNS chunk has wrong size for RGB image";
    case 42: return "tRNS chunk appeared while it was not allowed for this color type";
    case 43: return "bKGD chunk has wrong size for palette image";
    case 44: return "bKGD chunk has wrong size for greyscale image";
    case 45: return "bKGD chunk has wrong size for RGB image";
    /*the input data is empty, maybe a PNG file doesn't exist or is in the wrong path*/
    case 48: return "empty input or file doesn't exist";
    case 49: return "jumped past memory while generating dynamic huffman tree";
    case 50: return "jumped past memory while generating dynamic huffman tree";
    case 51: return "jumped past memory while inflating huffman block";
    case 52: return "jumped past memory while inflating";
    case 53: return "size of zlib data too small";
    case 54: return "repeat symbol in tree while there was no value symbol yet";
    /*jumped past tree while generating huffman tree, this could be when the
    tree will have more leaves than symbols after generating it out of the
    given lenghts. They call this an oversubscribed dynamic bit lengths tree in zlib.*/
    case 55: return "jumped past tree while generating huffman tree";
    case 56: return "given output image colortype or bitdepth not supported for color conversion";
    case 57: return "invalid CRC encountered (checking CRC can be disabled)";
    case 58: return "invalid ADLER32 encountered (checking ADLER32 can be disabled)";
    case 59: return "requested color conversion not supported";
    case 60: return "invalid window size given in the settings of the encoder (must be 0-32768)";
    case 61: return "invalid BTYPE given in the settings of the encoder (only 0, 1 and 2 are allowed)";
    /*LodePNG leaves the choice of RGB to greyscale conversion formula to the user.*/
    case 62: return "conversion from color to greyscale not supported";
    case 63: return "length of a chunk too long, max allowed for PNG is 2147483647 bytes per chunk"; /*(2^31-1)*/
    /*this would result in the inability of a deflated block to ever contain an end code. It must be at least 1.*/
    case 64: return "the length of the END symbol 256 in the Huffman tree is 0";
    case 66: return "the length of a text chunk keyword given to the encoder is longer than the maximum of 79 bytes";
    case 67: return "the length of a text chunk keyword given to the encoder is smaller than the minimum of 1 byte";
    case 68: return "tried to encode a PLTE chunk with a palette that has less than 1 or more than 256 colors";
    case 69: return "unknown chunk type with 'critical' flag encountered by the decoder";
    case 71: return "unexisting interlace mode given to encoder (must be 0 or 1)";
    case 72: return "while decoding, unexisting compression method encountering in zTXt or iTXt chunk (it must be 0)";
    case 73: return "invalid tIME chunk size";
    case 74: return "invalid pHYs chunk size";
    /*length could be wrong, or data chopped off*/
    case 75: return "no null termination char found while decoding text chunk";
    case 76: return "iTXt chunk too short to contain required bytes";
    case 77: return "integer overflow in buffer size";
    case 78: return "failed to open file for reading"; /*file doesn't exist or couldn't be opened for reading*/
    case 79: return "failed to open file for writing";
    case 80: return "tried creating a tree of 0 symbols";
    case 81: return "lazy matching at pos 0 is impossible";
    case 82: return "color conversion to palette requested while a color isn't in palette";
    case 83: return "memory allocation failed";
    case 84: return "given image too small to contain all pixels to be encoded";
    case 86: return "impossible offset in lz77 encoding (internal bug)";
    case 87: return "must provide custom zlib function pointer if LODEPNG_COMPILE_ZLIB is not defined";
    case 88: return "invalid filter strategy given for LodePNGEncoderSettings.filter_strategy";
    case 89: return "text chunk keyword too short or long: must have size 1-79";
    /*the windowsize in the LodePNGCompressSettings. Requiring POT(==> & instead of %) makes encoding 12% faster.*/
    case 90: return "windowsize must be a power of two";
    case 91: return "fwrite failed";
  }
  return "unknown error code";
}
Unknown