95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
#pragma once
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#include "weaseljson.h"
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#include <cstdint>
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#include <string>
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#include <vector>
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struct MinifyState {
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bool isKey = false;
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struct Cursor {
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int64_t index;
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bool isObject;
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};
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std::string result;
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void on_begin_value() {
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if (!stack.empty()) {
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auto &back = stack.back();
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if (back.isObject && back.index % 2 == 0 && back.index > 0) {
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result.append(",");
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}
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if (back.isObject && back.index % 2 == 1 && back.index > 0) {
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result.append(":");
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}
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if (!back.isObject && back.index > 0) {
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result.append(",");
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}
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++back.index;
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}
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}
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std::vector<Cursor> stack;
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};
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Callbacks minifyCallbacks() {
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Callbacks result;
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result.on_begin_object = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->on_begin_value();
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state->stack.push_back({0, true});
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state->result.append("{");
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};
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result.on_end_object = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->stack.pop_back();
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state->result.append("}");
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};
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result.on_begin_string = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->on_begin_value();
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state->result.append("\"");
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};
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result.on_string_data = +[](void *p, const char *buf, int len) {
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auto *state = (MinifyState *)p;
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state->result.append(std::string(buf, len));
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};
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result.on_end_string = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->result.append("\"");
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};
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result.on_begin_array = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->on_begin_value();
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state->stack.push_back({0, false});
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state->result.append("[");
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};
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result.on_end_array = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->stack.pop_back();
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state->result.append("]");
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};
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result.on_begin_number = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->on_begin_value();
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};
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result.on_number_data = +[](void *p, const char *buf, int len) {
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auto *state = (MinifyState *)p;
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state->result.append(std::string(buf, len));
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};
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result.on_end_number = +[](void *) {};
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result.on_true_literal = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->on_begin_value();
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state->result.append("true");
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};
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result.on_false_literal = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->on_begin_value();
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state->result.append("false");
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};
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result.on_null_literal = +[](void *p) {
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auto *state = (MinifyState *)p;
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state->on_begin_value();
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state->result.append("null");
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};
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return result;
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}
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