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[209] | 1 | // Copyright Benoit Blanchon 2014-2016
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| 2 | // MIT License
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| 3 | //
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| 4 | // Arduino JSON library
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| 5 | // https://github.com/bblanchon/ArduinoJson
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| 6 | // If you like this project, please add a star!
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| 7 |
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| 8 | #pragma once
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| 9 |
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| 10 | #include "../Arduino/Print.hpp"
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| 11 |
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| 12 | namespace ArduinoJson {
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| 13 | namespace Internals {
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| 14 |
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| 15 | // Decorator on top of Print to allow indented output.
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| 16 | // This class is used by JsonPrintable::prettyPrintTo() but can also be used
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| 17 | // for your own purpose, like logging.
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| 18 | class IndentedPrint : public Print {
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| 19 | public:
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| 20 | explicit IndentedPrint(Print &p) : sink(&p) {
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| 21 | level = 0;
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| 22 | tabSize = 2;
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| 23 | isNewLine = true;
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| 24 | }
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| 25 |
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| 26 | virtual size_t write(uint8_t);
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| 27 |
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| 28 | // Adds one level of indentation
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| 29 | void indent() {
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| 30 | if (level < MAX_LEVEL) level++;
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| 31 | }
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| 32 |
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| 33 | // Removes one level of indentation
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| 34 | void unindent() {
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| 35 | if (level > 0) level--;
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| 36 | }
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| 37 |
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| 38 | // Set the number of space printed for each level of indentation
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| 39 | void setTabSize(uint8_t n) {
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| 40 | if (n < MAX_TAB_SIZE) tabSize = n & MAX_TAB_SIZE;
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| 41 | }
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| 42 |
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| 43 | private:
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| 44 | Print *sink;
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| 45 | uint8_t level : 4;
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| 46 | uint8_t tabSize : 3;
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| 47 | bool isNewLine : 1;
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| 48 |
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| 49 | size_t writeTabs();
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| 50 |
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| 51 | static const int MAX_LEVEL = 15; // because it's only 4 bits
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| 52 | static const int MAX_TAB_SIZE = 7; // because it's only 3 bits
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| 53 | };
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| 54 | }
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| 55 | }
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