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TextHelpers.h
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TextHelpers.h
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#pragma once
#include <sstream>
class TextHelpers {
public:
static void tokenize(std::string const &str, std::string delim, std::vector<std::string> &out) {
size_t start;
size_t end = 0;
while ((start = str.find_first_not_of(delim, end)) != std::string::npos) {
end = str.find(delim, start);
out.push_back(str.substr(start, end - start));
}
}
static std::string filter(std::string str) {
std::string output;
output.reserve(str.size()); // optional, avoids buffer reallocations in the loop
for (size_t i = 0; i < str.size(); ++i) {
if (i == 0 && str[i] == ' ')
continue;
if (i < str.size() - 3 && str[i] == '\\' && str[i + 1] == 'x' && str[i + 2] == 'a') {
// replace \xa with space
output += ' ';
i += 3;
continue;
}
if (i == str.size() - 1 && str[i] == '}')
return output;
if (str[i] != '[' && str[i] != ']' && str[i] != '\'' && str[i] != '"')
output += str[i];
}
return output;
}
static std::vector<std::shared_ptr<MenuTitleSource>> parseJsonArray(std::string state, std::string entityId) {
StaticJsonDocument<3072> doc;
DeserializationError err = deserializeJson(doc, state);
std::vector<std::shared_ptr<MenuTitleSource>> sources;
if (err) {
ESP_LOGE("JSON", "deserializeJson() failed: ");
ESP_LOGE("JSON", err.c_str());
return sources;
}
JsonArray array = doc.as<JsonArray>();
for (JsonVariant v : array) {
std::string sourceName = v.as<std::string>();
ESP_LOGD("JSON", "new JSON array value %s %s", sourceName.c_str(), entityId.c_str());
auto newsource =
std::make_shared<MenuTitleSource>(sourceName, entityId, NoMenuTitleRightIcon, SourceRemotePlayerSourceType);
sources.push_back(newsource);
}
return sources;
}
static std::string replaceAll(std::string str, const std::string &from, const std::string &to) {
size_t start_pos = 0;
while ((start_pos = str.find(from, start_pos)) != std::string::npos) {
str.replace(start_pos, from.length(), to);
start_pos += to.length(); // Handles case where 'to' is a substring of 'from'
}
return str;
}
static std::vector<std::shared_ptr<MenuTitleSource>> parseJsonSource(std::string state, std::string nameKey,
std::string valueKey) {
StaticJsonDocument<3072> doc;
DeserializationError err = deserializeJson(doc, state);
std::vector<std::shared_ptr<MenuTitleSource>> sources;
if (err) {
ESP_LOGE("JSON", "deserializeJson() failed: ");
ESP_LOGE("JSON", err.c_str());
return sources;
}
JsonArray array = doc.as<JsonArray>();
for (JsonVariant v : array) {
std::string playlistName = v[nameKey].as<std::string>();
std::string playlistId = v[valueKey].as<std::string>();
ESP_LOGD("JSON", "new JSON object value %s %s", playlistId.c_str(), playlistName.c_str());
auto newsource = std::make_shared<MenuTitleSource>(playlistName, playlistId, NoMenuTitleRightIcon,
MusicRemotePlayerSourceType);
sources.push_back(newsource);
}
return sources;
}
static std::vector<std::shared_ptr<MenuTitleSource>> parseJsonKeyValue(std::string state) {
StaticJsonDocument<3072> doc;
DeserializationError err = deserializeJson(doc, state);
std::vector<std::shared_ptr<MenuTitleSource>> sources;
if (err) {
ESP_LOGE("JSON", "deserializeJson() failed: ");
ESP_LOGE("JSON", err.c_str());
return sources;
}
JsonObject array = doc.as<JsonObject>();
for (JsonPair v : array) {
std::string playlistName(v.value().as<std::string>());
std::string playlistId(v.key().c_str());
ESP_LOGD("group", "new JSON key value %s %s", playlistId.c_str(), playlistName.c_str());
auto newsource = std::make_shared<MenuTitleSource>(playlistName, playlistId, NoMenuTitleRightIcon,
FavoriteItemIDRemotePlayerSourceType);
sources.push_back(newsource);
}
return sources;
}
static int extractFirstNumber(std::string input) {
// Remove the opening and closing parentheses
input = input.substr(1, input.size() - 2);
// Split the string on the comma
std::istringstream iss(input);
std::string first, second;
std::getline(iss, first, ',');
// Convert the first part to a int
int num = std::stod(first);
return num;
}
static Color hsvToRGB(double hue, double saturation, double value) {
double r = 0, g = 0, b = 0;
if (saturation == 0) {
r = value;
g = value;
b = value;
} else {
int i;
double f, p, q, t;
if (hue == 360)
hue = 0;
else
hue = hue / 60;
i = (int) trunc(hue);
f = hue - i;
p = value * (1.0 - saturation);
q = value * (1.0 - (saturation * f));
t = value * (1.0 - (saturation * (1.0 - f)));
switch (i) {
case 0:
r = value;
g = t;
b = p;
break;
case 1:
r = q;
g = value;
b = p;
break;
case 2:
r = p;
g = value;
b = t;
break;
case 3:
r = p;
g = q;
b = value;
break;
case 4:
r = t;
g = p;
b = value;
break;
default:
r = value;
g = p;
b = q;
break;
}
}
return Color((unsigned char) (r * 255), (unsigned char) (g * 255), (unsigned char) (b * 255));
}
private:
TextHelpers() {}
};