347 lines
9.6 KiB
C++
347 lines
9.6 KiB
C++
#include "wled.h"
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#include "fcn_declare.h"
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#include "const.h"
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//helper to get int value at a position in string
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int getNumVal(const String* req, uint16_t pos)
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{
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return req->substring(pos+3).toInt();
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}
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//helper to get int value with in/decrementing support via ~ syntax
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void parseNumber(const char* str, byte* val, byte minv, byte maxv)
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{
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if (str == nullptr || str[0] == '\0') return;
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if (str[0] == 'r') {*val = random8(minv,maxv); return;}
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bool wrap = false;
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if (str[0] == 'w' && strlen(str) > 1) {str++; wrap = true;}
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if (str[0] == '~') {
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int out = atoi(str +1);
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if (out == 0)
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{
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if (str[1] == '0') return;
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if (str[1] == '-')
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{
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*val = (int)(*val -1) < (int)minv ? maxv : min((int)maxv,(*val -1)); //-1, wrap around
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} else {
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*val = (int)(*val +1) > (int)maxv ? minv : max((int)minv,(*val +1)); //+1, wrap around
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}
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} else {
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if (wrap && *val == maxv && out > 0) out = minv;
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else if (wrap && *val == minv && out < 0) out = maxv;
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else {
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out += *val;
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if (out > maxv) out = maxv;
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if (out < minv) out = minv;
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}
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*val = out;
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}
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} else
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{
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byte p1 = atoi(str);
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const char* str2 = strchr(str,'~'); //min/max range (for preset cycle, e.g. "1~5~")
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if (str2) {
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byte p2 = atoi(str2+1);
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presetCycMin = p1; presetCycMax = p2;
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while (isdigit((str2+1)[0])) str2++;
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parseNumber(str2+1, val, p1, p2);
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} else {
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*val = p1;
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}
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}
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}
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bool getVal(JsonVariant elem, byte* val, byte vmin, byte vmax) {
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if (elem.is<int>()) {
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if (elem < 0) return false; //ignore e.g. {"ps":-1}
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*val = elem;
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return true;
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} else if (elem.is<const char*>()) {
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const char* str = elem;
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size_t len = strnlen(str, 12);
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if (len == 0 || len > 10) return false;
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parseNumber(str, val, vmin, vmax);
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return true;
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}
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return false; //key does not exist
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}
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bool updateVal(const String* req, const char* key, byte* val, byte minv, byte maxv)
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{
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int pos = req->indexOf(key);
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if (pos < 1) return false;
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if (req->length() < (unsigned int)(pos + 4)) return false;
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parseNumber(req->c_str() + pos +3, val, minv, maxv);
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return true;
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}
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//append a numeric setting to string buffer
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void sappend(char stype, const char* key, int val)
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{
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char ds[] = "d.Sf.";
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switch(stype)
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{
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case 'c': //checkbox
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oappend(ds);
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oappend(key);
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oappend(".checked=");
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oappendi(val);
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oappend(";");
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break;
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case 'v': //numeric
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oappend(ds);
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oappend(key);
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oappend(".value=");
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oappendi(val);
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oappend(";");
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break;
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case 'i': //selectedIndex
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oappend(ds);
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oappend(key);
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oappend(SET_F(".selectedIndex="));
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oappendi(val);
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oappend(";");
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break;
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}
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}
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//append a string setting to buffer
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void sappends(char stype, const char* key, char* val)
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{
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switch(stype)
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{
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case 's': {//string (we can interpret val as char*)
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String buf = val;
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//convert "%" to "%%" to make EspAsyncWebServer happy
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//buf.replace("%","%%");
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oappend("d.Sf.");
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oappend(key);
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oappend(".value=\"");
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oappend(buf.c_str());
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oappend("\";");
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break;}
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case 'm': //message
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oappend(SET_F("d.getElementsByClassName"));
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oappend(key);
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oappend(SET_F(".innerHTML=\""));
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oappend(val);
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oappend("\";");
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break;
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}
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}
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bool oappendi(int i)
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{
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char s[11];
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sprintf(s, "%d", i);
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return oappend(s);
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}
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bool oappend(const char* txt)
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{
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uint16_t len = strlen(txt);
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if (olen + len >= SETTINGS_STACK_BUF_SIZE)
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return false; // buffer full
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strcpy(obuf + olen, txt);
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olen += len;
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return true;
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}
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void prepareHostname(char* hostname)
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{
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const char *pC = serverDescription;
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uint8_t pos = 5;
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while (*pC && pos < 24) { // while !null and not over length
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if (isalnum(*pC)) { // if the current char is alpha-numeric append it to the hostname
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hostname[pos] = *pC;
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pos++;
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} else if (*pC == ' ' || *pC == '_' || *pC == '-' || *pC == '+' || *pC == '!' || *pC == '?' || *pC == '*') {
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hostname[pos] = '-';
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pos++;
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}
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// else do nothing - no leading hyphens and do not include hyphens for all other characters.
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pC++;
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}
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// if the hostname is left blank, use the mac address/default mdns name
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if (pos < 6) {
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sprintf(hostname + 5, "%*s", 6, escapedMac.c_str() + 6);
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} else { //last character must not be hyphen
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while (pos > 0 && hostname[pos -1] == '-') {
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hostname[pos -1] = 0;
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pos--;
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}
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}
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}
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bool isAsterisksOnly(const char* str, byte maxLen)
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{
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for (byte i = 0; i < maxLen; i++) {
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if (str[i] == 0) break;
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if (str[i] != '*') return false;
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}
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//at this point the password contains asterisks only
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return (str[0] != 0); //false on empty string
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}
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//threading/network callback details: https://github.com/Aircoookie/WLED/pull/2336#discussion_r762276994
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bool requestJSONBufferLock(uint8_t module)
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{
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unsigned long now = millis();
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while (jsonBufferLock && millis()-now < 1000) delay(1); // wait for a second for buffer lock
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if (millis()-now >= 1000) {
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DEBUG_PRINT(F("ERROR: Locking JSON buffer failed! ("));
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DEBUG_PRINT(jsonBufferLock);
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DEBUG_PRINTLN(")");
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return false; // waiting time-outed
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}
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jsonBufferLock = module ? module : 255;
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DEBUG_PRINT(F("JSON buffer locked. ("));
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DEBUG_PRINT(jsonBufferLock);
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DEBUG_PRINTLN(")");
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fileDoc = &doc; // used for applying presets (presets.cpp)
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doc.clear();
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return true;
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}
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void releaseJSONBufferLock()
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{
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DEBUG_PRINT(F("JSON buffer released. ("));
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DEBUG_PRINT(jsonBufferLock);
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DEBUG_PRINTLN(")");
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fileDoc = nullptr;
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jsonBufferLock = 0;
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}
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// extracts effect mode (or palette) name from names serialized string
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// caller must provide large enough buffer for name (incluing SR extensions)!
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uint8_t extractModeName(uint8_t mode, const char *src, char *dest, uint8_t maxLen)
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{
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if (src == JSON_mode_names || src == nullptr) {
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if (mode < MODE_COUNT) {
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char lineBuffer[256];
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//strcpy_P(lineBuffer, (const char*)pgm_read_dword(&(WS2812FX::_modeData[mode])));
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strcpy_P(lineBuffer, WS2812FX::_modeData[mode]);
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if (strlen(lineBuffer) > 0) {
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size_t j = 0;
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for (; j < maxLen; j++) {
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if (lineBuffer[j] == '\0' || lineBuffer[j] == '@') break;
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dest[j] = lineBuffer[j];
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}
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dest[j] = 0; // terminate string
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}
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return strlen(dest);
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} else return 0;
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}
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uint8_t qComma = 0;
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bool insideQuotes = false;
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uint8_t printedChars = 0;
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char singleJsonSymbol;
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size_t len = strlen_P(src);
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// Find the mode name in JSON
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for (size_t i = 0; i < len; i++) {
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singleJsonSymbol = pgm_read_byte_near(src + i);
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if (singleJsonSymbol == '\0') break;
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if (singleJsonSymbol == '@' && insideQuotes && qComma == mode) break; //stop when SR extension encountered
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switch (singleJsonSymbol) {
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case '"':
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insideQuotes = !insideQuotes;
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break;
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case '[':
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case ']':
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break;
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case ',':
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if (!insideQuotes) qComma++;
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default:
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if (!insideQuotes || (qComma != mode)) break;
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dest[printedChars++] = singleJsonSymbol;
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}
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if ((qComma > mode) || (printedChars >= maxLen)) break;
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}
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dest[printedChars] = '\0';
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return strlen(dest);
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}
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// extracts effect slider data (1st group after @)
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uint8_t extractModeSlider(uint8_t mode, uint8_t slider, char *dest, uint8_t maxLen)
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{
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dest[0] = '\0'; // start by clearing buffer
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if (mode < MODE_COUNT) {
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String lineBuffer = WS2812FX::_modeData[mode];
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if (lineBuffer.length() > 0) {
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int16_t start = lineBuffer.indexOf('@');
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int16_t stop = lineBuffer.indexOf(';', start);
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if (start>0 && stop>0) {
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String names = lineBuffer.substring(start+1, stop);
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int16_t nameBegin = 0, nameEnd;
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for (size_t i=0; i<=slider; i++) {
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const char *tmpstr;
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dest[0] = '\0'; //clear dest buffer
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if (i > 0 && nameBegin == 0) break; // there are no more names
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nameEnd = names.indexOf(',', nameBegin);
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if (names.charAt(nameBegin) == '!') {
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switch (i) {
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case 0: tmpstr = PSTR("FX Speed"); break;
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case 1: tmpstr = PSTR("FX Intensity"); break;
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case 2: tmpstr = PSTR("FX Custom 1"); break;
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case 3: tmpstr = PSTR("FX Custom 2"); break;
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case 4: tmpstr = PSTR("FX Custom 3"); break;
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default: tmpstr = PSTR("FX Custom"); break;
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}
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} else {
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if (nameEnd<0) tmpstr = names.substring(nameBegin).c_str(); // did not find ",", last name?
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else tmpstr = names.substring(nameBegin, nameEnd).c_str();
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}
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strncpy(dest, tmpstr, maxLen); // copy the name into buffer (replacing previous)
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nameBegin = nameEnd+1; // next name (if "," is not found it will be 0)
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} // next slider
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// we have slider name (including default value) in the dest buffer
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for (size_t i=0; i<strlen(dest); i++) if (dest[i]=='=') { dest[i]='\0'; break; } // truncate default value
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} else {
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// defaults to just speed and intensity since there is no slider data
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switch (slider) {
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case 0: strncpy_P(dest, PSTR("FX Speed"), maxLen); break;
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case 1: strncpy_P(dest, PSTR("FX Intensity"), maxLen); break;
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}
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}
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}
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return strlen(dest);
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}
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return 0;
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}
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uint16_t crc16(const unsigned char* data_p, size_t length) {
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uint8_t x;
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uint16_t crc = 0xFFFF;
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if (!length) return 0x1D0F;
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while (length--) {
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x = crc >> 8 ^ *data_p++;
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x ^= x>>4;
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crc = (crc << 8) ^ ((uint16_t)(x << 12)) ^ ((uint16_t)(x <<5)) ^ ((uint16_t)x);
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}
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return crc;
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} |