Dan,
I think I figured out how to add the ability to do a curl_easy_getinfo
and get a file's Content-Length value. The relevant code changes are
as follows:

Change the definition of this enum in curl/curl.h
to the following:

typedef enum {
  CURLINFO_NONE, /* first, never use this */
  CURLINFO_EFFECTIVE_URL = CURLINFO_STRING + 1,
  CURLINFO_HTTP_CODE = CURLINFO_LONG + 2,
  CURLINFO_TOTAL_TIME = CURLINFO_DOUBLE + 3,
  CURLINFO_NAMELOOKUP_TIME = CURLINFO_DOUBLE + 4,
  CURLINFO_CONNECT_TIME = CURLINFO_DOUBLE + 5,
  CURLINFO_PRETRANSFER_TIME = CURLINFO_DOUBLE + 6,
  CURLINFO_SIZE_UPLOAD = CURLINFO_DOUBLE + 7,
  CURLINFO_SIZE_DOWNLOAD = CURLINFO_DOUBLE + 8,
  CURLINFO_SPEED_DOWNLOAD = CURLINFO_DOUBLE + 9,
  CURLINFO_SPEED_UPLOAD = CURLINFO_DOUBLE + 10,
  CURLINFO_HEADER_SIZE = CURLINFO_LONG + 11,
  CURLINFO_REQUEST_SIZE = CURLINFO_LONG + 12,
  CURLINFO_SSL_VERIFYRESULT = CURLINFO_LONG + 13,
  CURLINFO_FILETIME = CURLINFO_LONG + 14,
  CURLINFO_CONTENT_LENGTH = CURLINFO_LONG + 15,
  CURLINFO_LASTONE = 16
} CURLINFO;

Add the following case statement to curl_getinfo() in
lib/getinfo.c's switch(info) statement:

case CURLINFO_CONTENT_LENGTH:
  *param_longp = (long)(data->progress.size_dl +
data->progress.size_ul);
  break;

That's it. It seems to work for me. I had to dig into progress.c to
find these values, although the syntax may vary a bit from the
calculation of total_expected_transfer in progress.c.
I tried to implement this properly as a *param_doublep like
I thought it should be, but it would crash on me even when I
would statically set it's value to something like "1.0", so I
tried casting it to long and it worked. Should be OK since we
don't have to deal with fractional bytes yet! I am only using
this after a GET on headers only, can't tell how it would
function for other uses, but it eases the ability to automatically
test if a file PUT needs to be resumed.

Don't know if you ever got my request about adding this
feature as I still haven't received my copy from the list,
that's why I am emailing you directly in addition to the
list. I see 7.6.1-pre2 has been released, but this
functionality isn't included in it yet that I can see.

Bob Schader

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Received on 2001-02-02