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examples: consistent variable naming across examples

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- 'CURL *' handles are called 'curl'
- 'CURLM *' handles are called 'multi'
- write callbacks are called 'write_cb'
- read callbacs are called 'read_cb'
- CURLcode variables are called 'res'

It makes the examples look and feel more consistent. It allows for
easier copy and pasting between examples.

Closes #19299
This commit is contained in:
Daniel Stenberg 2025-10-31 14:42:30 +01:00
parent 0313223853
commit 928363f28c
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GPG key ID: 5CC908FDB71E12C2
59 changed files with 715 additions and 725 deletions
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44
docs/examples/htmltitle.cpp
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@ -86,43 +86,43 @@ static size_t writer(char *data, size_t size, size_t nmemb,
// libcurl connection initialization
//
static bool init(CURL *&conn, const char *url)
static bool init(CURL *&curl, const char *url)
{
CURLcode code;
CURLcode res;
conn = curl_easy_init();
curl = curl_easy_init();
if(conn == NULL) {
fprintf(stderr, "Failed to create CURL connection\n");
if(!curl) {
fprintf(stderr, "Failed to create CURL handle\n");
return false;
}
code = curl_easy_setopt(conn, CURLOPT_ERRORBUFFER, errorBuffer);
if(code != CURLE_OK) {
fprintf(stderr, "Failed to set error buffer [%d]\n", code);
res = curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errorBuffer);
if(res != CURLE_OK) {
fprintf(stderr, "Failed to set error buffer [%d]\n", res);
return false;
}
code = curl_easy_setopt(conn, CURLOPT_URL, url);
if(code != CURLE_OK) {
res = curl_easy_setopt(curl, CURLOPT_URL, url);
if(res != CURLE_OK) {
fprintf(stderr, "Failed to set URL [%s]\n", errorBuffer);
return false;
}
code = curl_easy_setopt(conn, CURLOPT_FOLLOWLOCATION, 1L);
if(code != CURLE_OK) {
res = curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
if(res != CURLE_OK) {
fprintf(stderr, "Failed to set redirect option [%s]\n", errorBuffer);
return false;
}
code = curl_easy_setopt(conn, CURLOPT_WRITEFUNCTION, writer);
if(code != CURLE_OK) {
res = curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, writer);
if(res != CURLE_OK) {
fprintf(stderr, "Failed to set writer [%s]\n", errorBuffer);
return false;
}
code = curl_easy_setopt(conn, CURLOPT_WRITEDATA, &buffer);
if(code != CURLE_OK) {
res = curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
if(res != CURLE_OK) {
fprintf(stderr, "Failed to set write data [%s]\n", errorBuffer);
return false;
}
@ -262,7 +262,7 @@ static void parseHtml(const std::string &html,
int main(int argc, char *argv[])
{
CURL *conn = NULL;
CURL *curl = NULL;
CURLcode res;
std::string title;
@ -277,18 +277,18 @@ int main(int argc, char *argv[])
if(res)
return (int)res;
// Initialize CURL connection
// Initialize CURL handle
if(!init(conn, argv[1])) {
fprintf(stderr, "Connection initialization failed\n");
if(!init(curl, argv[1])) {
fprintf(stderr, "Handle initialization failed\n");
curl_global_cleanup();
return EXIT_FAILURE;
}
// Retrieve content for the URL
res = curl_easy_perform(conn);
curl_easy_cleanup(conn);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
if(res != CURLE_OK) {
fprintf(stderr, "Failed to get '%s' [%s]\n", argv[1], errorBuffer);