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.TH curl_easy_option_next 3 "November 04, 2020" "libcurl 7.77.0" "libcurl Manual"

.SH NAME
curl_easy_option_next - iterate over easy setopt options
.SH SYNOPSIS
.nf
#include <curl/curl.h>

typedef enum {
  CURLOT_LONG,    /* long (a range of values) */
  CURLOT_VALUES,  /*      (a defined set or bitmask) */
  CURLOT_OFF_T,   /* curl_off_t (a range of values) */
  CURLOT_OBJECT,  /* pointer (void *) */
  CURLOT_STRING,  /*         (char * to zero terminated buffer) */
  CURLOT_SLIST,   /*         (struct curl_slist *) */
  CURLOT_CBPTR,   /*         (void * passed as-is to a callback) */
  CURLOT_BLOB,    /* blob (struct curl_blob *) */
  CURLOT_FUNCTION /* function pointer */
} curl_easytype;

/* The CURLOPTTYPE_* id ranges can still be used to figure out what type/size
   to use for curl_easy_setopt() for the given id */
struct curl_easyoption {
  const char *name;
  CURLoption id;
  curl_easytype type;
  unsigned int flags;
};

const struct curl_easyoption *
curl_easy_option_next(const struct curl_easyoption *prev);
.fi
.SH DESCRIPTION
This function returns a pointer to the first or the next curl_easyoption
struct, providing an ability to iterate over all known options for
\fIcurl_easy_setopt(3)\fP in this instance of libcurl.

Pass a \fBNULL\fP argument as \fBprev\fP to get the first option returned, or
pass in the current option to get the next one returned. If there is no more
option to return, \fIcurl_easy_option_next(3)\fP returns NULL.

The options returned by this functions are the ones known to this libcurl and
information about what argument type they want.

If the \fBCURLOT_FLAG_ALIAS\fP bit is set in the flags field, it means the
name is provided for backwards compatibility as an alias.
.SH AVAILABILITY
This function was added in libcurl 7.73.0
.SH RETURN VALUE
A pointer to the curl_easyoption struct for the next option or NULL if no more
options.
.SH "SEE ALSO"
.BR curl_easy_option_by_name "(3)," curl_easy_option_by_id "(3),"
.BR curl_easy_setopt "(3),"
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