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‎ESP32_simpleDMX.ino

+2,695
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‎ParseCommand.cpp

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/**
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* ParseCommand - A Wiring/Arduino library to tokenize and parse commands
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* received over a serial port.
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*
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* Copyright (C) 2012 Stefan Rado
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* Copyright (C) 2011 Steven Cogswell <[email protected]>
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* http://husks.wordpress.com
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*
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* Version 20120522
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ParseCommand.h"
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/**
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* Constructor makes sure some things are set.
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*/
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ParseCommand::ParseCommand()
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: commandList(NULL),
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commandCount(0),
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defaultHandler(NULL),
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term('\n'), // default terminator for commands, newline character
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last(NULL)
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{
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strcpy(delim, " "); // strtok_r needs a null-terminated string
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clearBuffer();
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}
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/**
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* Adds a "command" and a handler function to the list of available commands.
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* This is used for matching a found token in the buffer, and gives the pointer
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* to the handler function to deal with it.
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*/
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void ParseCommand::addCommand(const char *command, void (*function)()) {
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#ifdef PARSECOMMAND_DEBUG
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Serial.print("Adding command (");
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Serial.print(commandCount);
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Serial.print("): ");
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Serial.println(command);
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#endif
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commandList = (ParseCommandCallback *) realloc(commandList, (commandCount + 1) * sizeof(ParseCommandCallback));
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strncpy(commandList[commandCount].command, command, PARSECOMMAND_MAXCOMMANDLENGTH);
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commandList[commandCount].function = function;
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commandCount++;
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}
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/**
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* This sets up a handler to be called in the event that the receveived command string
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* isn't in the list of commands.
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*/
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void ParseCommand::setDefaultHandler(void (*function)(const char *)) {
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defaultHandler = function;
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}
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/**
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* This checks the Serial stream for characters, and assembles them into a buffer.
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* When the terminator character (default '\n') is seen, it starts parsing the
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* buffer for a prefix command, and calls handlers setup by addCommand() member
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*/
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void ParseCommand::readCommand(const char * sbuffer) {
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snprintf(buffer,sizeof(buffer),"%s",sbuffer);
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#ifdef PARSECOMMAND_DEBUG
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Serial.print("Received: ");
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Serial.println(buffer);
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#endif
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char *command = strtok_r(buffer, delim, &last); // Search for command at start of buffer
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if (command != NULL) {
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boolean matched = false;
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for (int i = 0; i < commandCount; i++) {
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#ifdef PARSECOMMAND_DEBUG
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Serial.print("Comparing [");
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Serial.print(command);
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Serial.print("] to [");
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Serial.print(commandList[i].command);
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Serial.println("]");
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#endif
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// Compare the found command against the list of known commands for a match
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if (strncmp(command, commandList[i].command, PARSECOMMAND_MAXCOMMANDLENGTH) == 0) {
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#ifdef PARSECOMMAND_DEBUG
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Serial.print("Matched Command: ");
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Serial.println(command);
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#endif
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// Execute the stored handler function for the command
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(*commandList[i].function)();
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matched = true;
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break;
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}
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}
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if (!matched && (defaultHandler != NULL)) {
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(*defaultHandler)(command);
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}
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}
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clearBuffer();
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}
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/*
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* Clear the input buffer.
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*/
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void ParseCommand::clearBuffer() {
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buffer[0] = '\0';
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bufPos = 0;
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}
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/**
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* Retrieve the next token ("word" or "argument") from the command buffer.
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* Returns NULL if no more tokens exist.
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*/
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char *ParseCommand::next() {
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return strtok_r(NULL, delim, &last);
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}

‎ParseCommand.h

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/**
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* ParseCommand - A Wiring/Arduino library to tokenize and parse commands
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* received over a serial port.
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*
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* Copyright (C) 2012 Stefan Rado
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* Copyright (C) 2011 Steven Cogswell <[email protected]>
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* http://husks.wordpress.com
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*
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* Version 20120522
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ParseCommand_h
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#define ParseCommand_h
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#if defined(WIRING) && WIRING >= 100
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#include <Wiring.h>
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#elif defined(ARDUINO) && ARDUINO >= 100
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#include <Arduino.h>
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#else
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#include <WProgram.h>
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#endif
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#include <string.h>
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// Size of the input buffer in bytes (maximum length of one command plus arguments)
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#define PARSECOMMAND_BUFFER 64
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// Maximum length of a command excluding the terminating null
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#define PARSECOMMAND_MAXCOMMANDLENGTH 12
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// Uncomment the next line to run the library in debug mode (verbose messages)
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//#define PARSECOMMAND_DEBUG
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class ParseCommand {
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public:
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ParseCommand(); // Constructor
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void addCommand(const char *command, void(*function)()); // Add a command to the processing dictionary.
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void setDefaultHandler(void (*function)(const char *)); // A handler to call when no valid command received.
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void readCommand(const char * ); // Main entry point.
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void clearBuffer(); // Clears the input buffer.
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char *next(); // Returns pointer to next token found in command buffer (for getting arguments to commands).
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private:
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// Command/handler dictionary
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struct ParseCommandCallback {
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char command[PARSECOMMAND_MAXCOMMANDLENGTH + 1];
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void (*function)();
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}; // Data structure to hold Command/Handler function key-value pairs
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ParseCommandCallback *commandList; // Actual definition for command/handler array
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byte commandCount;
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// Pointer to the default handler function
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void (*defaultHandler)(const char *);
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char delim[2]; // null-terminated list of character to be used as delimeters for tokenizing (default " ")
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char term; // Character that signals end of command (default '\n')
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char buffer[PARSECOMMAND_BUFFER + 1]; // Buffer of stored characters while waiting for terminator character
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byte bufPos; // Current position in the buffer
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char *last; // State variable used by strtok_r during processing
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};
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#endif //ParseCommand_h

‎error_404.h

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const char *HTML_404 = R"=====(
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=0.8">
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<link rel="icon" href="data:,">
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<title>Page Not Found</title>
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<style>
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h1 {
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font-size: 80px;
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}
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</style>
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</head>
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<body>
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<h1>404</h1>
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<p>Error page not found</p>
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<p>Go back to the <a href="/">homepage</a>.</p>
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</body>
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</html>
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)=====";

‎error_405.h

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const char *HTML_405 = R"=====(
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=0.8">
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<link rel="icon" href="data:,">
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<title>Method Not Allowed</title>
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<style>
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h1 {
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font-size: 80px;
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}
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</style>
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</head>
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<body>
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<h1>405</h1>
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<p>Method Not Allowed</p>
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<p>Go back to the <a href="/">homepage</a>.</p>
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</body>
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</html>
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)=====";

‎failed_html.h

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/*
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* This ESP32 code is created by esp32io.com
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*
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* This ESP32 code is released in the public domain
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*
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* For more detail (instruction and wiring diagram), visit https://esp32io.com/tutorials/esp32-web-server-multiple-pages
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*/
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const char failed_html[] PROGMEM = R"rawliteral(
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<!DOCTYPE HTML>
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<html>
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<head>
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<title>Update unsuccessful</title>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<style>
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body {
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background-color: #f7f7f7;
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font-size: 16px;
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font-family: sans-serif;
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}
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#spacer_30 {
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height: 30px;
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}
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</style>
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</head>
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<body>
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<center>
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<h2>The update has failed.</h2>
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<div id="spacer_30"></div>
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<button onclick="window.location.href='/';">to homepage</button>
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</center>
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</body>
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</html> )rawliteral";

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