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PROGMEM footprint cleanup for responseCodeToString (#6950)
* PROGMEM footprint cleanup for responseCodeToString Doing returns with String/FlashStringHelper conversion for every case means that the code for doing that is duplicated, which is wasteful. doing it only once saves about 250 bytes (50%) of code size. * Remove "I'm a teapot" error code * Add inline code comment to explain rationale
This commit is contained in:
Dirk Mueller
Develo
parent
698ffc3498
commit
bea9cfc3a0
@ -695,49 +695,136 @@ void ESP8266WebServerTemplate<ServerType>::_finalizeResponse() {
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}
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template <typename ServerType>
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const String ESP8266WebServerTemplate<ServerType>::responseCodeToString(const int code) {
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switch (code) {
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case 100: return F("Continue");
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case 101: return F("Switching Protocols");
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case 200: return F("OK");
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case 201: return F("Created");
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case 202: return F("Accepted");
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case 203: return F("Non-Authoritative Information");
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case 204: return F("No Content");
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case 205: return F("Reset Content");
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case 206: return F("Partial Content");
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case 300: return F("Multiple Choices");
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case 301: return F("Moved Permanently");
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case 302: return F("Found");
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case 303: return F("See Other");
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case 304: return F("Not Modified");
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case 305: return F("Use Proxy");
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case 307: return F("Temporary Redirect");
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case 400: return F("Bad Request");
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case 401: return F("Unauthorized");
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case 402: return F("Payment Required");
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case 403: return F("Forbidden");
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case 404: return F("Not Found");
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case 405: return F("Method Not Allowed");
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case 406: return F("Not Acceptable");
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case 407: return F("Proxy Authentication Required");
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case 408: return F("Request Time-out");
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case 409: return F("Conflict");
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case 410: return F("Gone");
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case 411: return F("Length Required");
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case 412: return F("Precondition Failed");
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case 413: return F("Request Entity Too Large");
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case 414: return F("Request-URI Too Large");
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case 415: return F("Unsupported Media Type");
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case 416: return F("Requested range not satisfiable");
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case 417: return F("Expectation Failed");
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case 418: return F("I'm a teapot");
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case 500: return F("Internal Server Error");
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case 501: return F("Not Implemented");
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case 502: return F("Bad Gateway");
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case 503: return F("Service Unavailable");
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case 504: return F("Gateway Time-out");
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case 505: return F("HTTP Version not supported");
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default: return F("");
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String ESP8266WebServerTemplate<ServerType>::responseCodeToString(const int code) {
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// By first determining the pointer to the flash stored string in the switch
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// statement and then doing String(FlashStringHelper) return reduces the total code
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// size of this function by over 50%.
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const __FlashStringHelper *r;
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switch (code)
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{
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case 100:
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r = F("Continue");
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break;
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case 101:
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r = F("Switching Protocols");
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break;
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case 200:
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r = F("OK");
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break;
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case 201:
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r = F("Created");
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break;
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case 202:
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r = F("Accepted");
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break;
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case 203:
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r = F("Non-Authoritative Information");
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break;
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case 204:
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r = F("No Content");
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break;
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case 205:
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r = F("Reset Content");
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break;
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case 206:
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r = F("Partial Content");
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break;
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case 300:
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r = F("Multiple Choices");
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break;
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case 301:
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r = F("Moved Permanently");
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break;
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case 302:
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r = F("Found");
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break;
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case 303:
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r = F("See Other");
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break;
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case 304:
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r = F("Not Modified");
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break;
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case 305:
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r = F("Use Proxy");
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break;
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case 307:
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r = F("Temporary Redirect");
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break;
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case 400:
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r = F("Bad Request");
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break;
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case 401:
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r = F("Unauthorized");
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break;
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case 402:
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r = F("Payment Required");
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break;
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case 403:
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r = F("Forbidden");
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break;
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case 404:
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r = F("Not Found");
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break;
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case 405:
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r = F("Method Not Allowed");
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break;
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case 406:
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r = F("Not Acceptable");
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break;
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case 407:
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r = F("Proxy Authentication Required");
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break;
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case 408:
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r = F("Request Timeout");
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break;
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case 409:
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r = F("Conflict");
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break;
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case 410:
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r = F("Gone");
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break;
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case 411:
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r = F("Length Required");
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break;
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case 412:
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r = F("Precondition Failed");
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break;
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case 413:
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r = F("Request Entity Too Large");
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break;
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case 414:
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r = F("URI Too Long");
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break;
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case 415:
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r = F("Unsupported Media Type");
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break;
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case 416:
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r = F("Range not satisfiable");
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break;
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case 417:
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r = F("Expectation Failed");
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break;
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case 500:
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r = F("Internal Server Error");
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break;
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case 501:
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r = F("Not Implemented");
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break;
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case 502:
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r = F("Bad Gateway");
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break;
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case 503:
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r = F("Service Unavailable");
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break;
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case 504:
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r = F("Gateway Timeout");
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break;
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case 505:
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r = F("HTTP Version not supported");
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break;
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default:
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r = F("");
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break;
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}
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return String(r);
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}
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@ -169,7 +169,7 @@ public:
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return contentLength;
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}
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static const String responseCodeToString(const int code);
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static String responseCodeToString(const int code);
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protected:
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void _addRequestHandler(RequestHandlerType* handler);
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