forked from bblanchon/ArduinoJson
55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
// Copyright Benoit Blanchon 2014
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// MIT License
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//
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// Arduino JSON library
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// https://github.com/bblanchon/ArduinoJson
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#pragma once
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#include "../Arduino/Print.hpp"
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namespace ArduinoJson {
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namespace Internals {
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// Decorator on top of Print to allow indented output.
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// This class is used by JsonPrintable::prettyPrintTo() but can also be used
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// for your own purpose, like logging.
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class IndentedPrint : public Print {
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public:
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explicit IndentedPrint(Print &p) : sink(&p) {
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level = 0;
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tabSize = 2;
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isNewLine = true;
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}
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virtual size_t write(uint8_t);
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// Adds one level of indentation
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void indent() {
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if (level < MAX_LEVEL) level++;
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}
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// Removes one level of indentation
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void unindent() {
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if (level > 0) level--;
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}
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// Set the number of space printed for each level of indentation
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void setTabSize(uint8_t n) {
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if (n < MAX_TAB_SIZE) tabSize = n & MAX_TAB_SIZE;
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}
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private:
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Print *sink;
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uint8_t level : 4;
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uint8_t tabSize : 3;
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bool isNewLine : 1;
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size_t writeTabs();
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static const int MAX_LEVEL = 15; // because it's only 4 bits
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static const int MAX_TAB_SIZE = 7; // because it's only 3 bits
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};
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}
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}
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