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60 lines
1.4 KiB
Groff
60 lines
1.4 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLOPT_PROGRESSDATA.md
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.TH CURLOPT_PROGRESSDATA 3 "2024-08-02" libcurl
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.SH NAME
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CURLOPT_PROGRESSDATA \- pointer passed to the progress callback
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROGRESSDATA, void *pointer);
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.fi
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.SH DESCRIPTION
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Pass a \fIpointer\fP that is untouched by libcurl and passed as the first
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argument in the progress callback set with \fICURLOPT_PROGRESSFUNCTION(3)\fP.
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.SH DEFAULT
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NULL
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.SH PROTOCOLS
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This functionality affects all supported protocols
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.SH EXAMPLE
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.nf
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struct progress {
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char *private;
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size_t size;
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};
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static size_t progress_callback(void *clientp,
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double dltotal,
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double dlnow,
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double ultotal,
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double ulnow)
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{
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struct progress *memory = clientp;
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printf("private: %p\\n", memory->private);
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/* use the values */
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return 0; /* all is good */
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}
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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struct progress data;
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/* pass struct to callback */
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curl_easy_setopt(curl, CURLOPT_PROGRESSDATA, &data);
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curl_easy_setopt(curl, CURLOPT_PROGRESSFUNCTION, progress_callback);
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curl_easy_perform(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in curl 7.1
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.SH RETURN VALUE
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Returns CURLE_OK
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.SH SEE ALSO
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.BR CURLOPT_PROGRESSFUNCTION (3),
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.BR CURLOPT_XFERINFOFUNCTION (3)
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