pica/utils/helpers.cpp

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// SPDX-FileCopyrightText: 2023 Yury Gubich <blue@macaw.me>
// SPDX-License-Identifier: GPL-3.0-or-later
#include "helpers.h"
#include "iostream"
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#include <algorithm>
#include <functional>
#include "config.h"
static bool installed = false;
static std::filesystem::path sPath;
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bool isSpace(char ch){
return std::isspace(static_cast<unsigned char>(ch));
}
void setAbsoluteSharedPath () {
installed = true;
sPath = FULL_DATA_DIR "/" PROJECT_NAME; // should be something like /usr/share/pica or /local/usr/share/pica
}
void initPaths(const char* programPath) {
std::filesystem::path pp(programPath);
if (pp.filename() == programPath)
return setAbsoluteSharedPath();
std::filesystem::path cp;
try {
cp = std::filesystem::canonical(pp);
} catch (const std::filesystem::filesystem_error& e) {
setAbsoluteSharedPath();
return;
}
if (cp.parent_path() == FULL_BIN_DIR)
return setAbsoluteSharedPath();
std::cout << cp << std::endl;
std::filesystem::path parent = cp.parent_path();
if (endsWith(parent.string(), BIN_DIR)) { //this is the case when the program is installed somewhere but not system root
std::filesystem::path bin(BIN_DIR); //so it will read from something like ../share/pica/ relative to the binary
for (const auto& hop : bin) {
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UNUSED(hop); //I do this just to make as many ups as many members are in bin
parent = parent.parent_path();
}
sPath = parent / DATA_DIR / PROJECT_NAME;
} else {
sPath = parent / DATA_DIR; //this should read something like ./share relative to the binary
}
}
const std::filesystem::path& sharedPath() {
return sPath;
}
bool endsWith(const std::string& string, const std::string& query) {
std::string::size_type sl = string.length();
std::string::size_type ql = query.length();
if (sl >= ql) {
unsigned int result = string.compare(sl - ql, ql, query);
return result == 0;
} else {
return false;
}
}
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void ltrim(std::string& string) {
string.erase(
string.begin(),
std::find_if(
string.begin(),
string.end(),
std::not_fn(isSpace)
)
);
}
void rtrim(std::string& string) {
string.erase(
std::find_if(
string.rbegin(),
string.rend(),
std::not_fn(isSpace)
).base(),
string.end()
);
}
void trim(std::string& string) {
ltrim(string);
rtrim(string);
}
std::string extract(std::string& string, std::string::size_type begin, std::string::size_type end) {
std::string result = string.substr(begin, end);
if (end == std::string::npos)
string.erase(begin, end);
else
string.erase(begin, result.length() + 1);
return result;
}