83 lines
3.4 KiB
C++
Executable File
83 lines
3.4 KiB
C++
Executable File
#include <HTTPClient.h>
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String textBeginString = "@";
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String textEndString = "@";
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String lehrTextBeginString = "@@";
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String sourceBeginString = "@";
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String sourceEndString = "@";
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String url = "https://www.losungen.de/fileadmin/media-losungen/kalender/kalender_daten.php";
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String getHTML(String url, String post_params) {
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String result = "";
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if(WiFi.status() == WL_CONNECTED) {
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HTTPClient http;
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http.begin(url); // initialize the http instance
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http.addHeader("Content-Type", "application/x-www-form-urlencoded"); // add the header; needed for the POST request
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Serial.printf("[HTTP] POST %s | DATA: %s\n", url.c_str(), post_params.c_str());
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int httpCode = http.POST(post_params); // get the page; httpCode will be negative on error
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if(httpCode > 0) {
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// HTTP header has been send and Server response header has been handled
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Serial.printf("[HTTP] POST %d: %s\n", httpCode, url.c_str());
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// file found at server
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if(httpCode == HTTP_CODE_OK) {
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result = http.getString();
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}
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} else {
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Serial.printf("[HTTP] POST: %s\n", http.errorToString(httpCode).c_str());
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}
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http.end();
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}
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return result;
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}
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String getHTML() { // gets the date and year from time.h library
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struct tm timeinfo;
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char dayInMonth[3];
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char month[3];
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char year[5];
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if(!getLocalTime(&timeinfo)){
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Serial.println("Failed to obtain time");
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return "";
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}
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strftime(dayInMonth,3, "%d", &timeinfo);
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sprintf(month,"%d",timeinfo.tm_mon); // the month number has to be in range 0-11!
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strftime(year,5, "%Y", &timeinfo);
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String post_params = "jahr=" + String(year) + "&monat=" + String(month) + "&tag=" + String(dayInMonth); // create post parameters of the form "jahr=2023&monat=2&tag=2"
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return getHTML(url, post_params);
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}
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String getLosungFromHTML(String html) {
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int losungBeginIndex = html.indexOf(textBeginString)+textBeginString.length();
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int losungEndIndex = html.indexOf(textEndString,losungBeginIndex);
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return html.substring(losungBeginIndex, losungEndIndex);
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}
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String getLosungSourceFromHTML(String html) { // get the source of losung in given html
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String losung = getLosungFromHTML(html);
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int losungIndex = html.indexOf(losung);
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int losungSourceBeginIndex = html.indexOf(sourceBeginString, losungIndex)+sourceBeginString.length();
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int losungSourceEndIndex = html.indexOf(sourceEndString, losungIndex+losung.length()+sourceBeginString.length());
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return html.substring(losungSourceBeginIndex, losungSourceEndIndex);
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}
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String getLehrtextFromHTML(String html) {
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int lehrtextBeginIndex = html.indexOf(lehrTextBeginString)+lehrTextBeginString.length();
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int lehrtextEndIndex = html.indexOf(textEndString, lehrtextBeginIndex); // calculating is needed for better performance and to get the next index, not the current/previous
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return html.substring(lehrtextBeginIndex, lehrtextEndIndex);
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}
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String getLehrtextSourceFromHTML(String html) { // get the source of losung in given html
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String lehrtext = getLehrtextFromHTML(html);
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int lehrtextIndex = html.indexOf(lehrtext);
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int lehrtextSourceBeginIndex = html.indexOf(sourceBeginString, lehrtextIndex)+sourceBeginString.length();
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int lehrtextSourceEndIndex = html.indexOf(sourceEndString, lehrtextSourceBeginIndex); // calculating is needed for better performance and to get the next index, not the current/previous
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return html.substring(lehrtextSourceBeginIndex, lehrtextSourceEndIndex);
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} |