mirror of
https://github.com/slsdetectorgroup/slsDetectorPackage.git
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100 lines
3.3 KiB
C++
100 lines
3.3 KiB
C++
// SPDX-License-Identifier: LGPL-3.0-or-other
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// Copyright (C) 2021 Contributors to the SLS Detector Package
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#pragma once
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#include <cassert>
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#include <cstdint>
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#include <cstring>
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#include <stdexcept>
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#include <string>
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#include <utility>
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#include <vector>
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namespace sls {
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/* Implementation of a safe string copy function for setting fields in
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for example the multi sls detector. It tries to copy the size of the
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destination from the source, stopping on '\0'.
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Warning this will truncate the source string and should be used with care.
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Still this is better than strcpy and a buffer overflow...
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*/
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template <size_t array_size>
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void strcpy_safe(char (&destination)[array_size], const char *source) {
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assert(source != nullptr);
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assert(array_size > strlen(source));
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strncpy(destination, source, array_size - 1);
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destination[array_size - 1] = '\0';
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}
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template <size_t array_size>
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void strcpy_safe(char (&destination)[array_size], const std::string &source) {
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assert(array_size > source.size());
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strncpy(destination, source.c_str(), array_size - 1);
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destination[array_size - 1] = '\0';
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}
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// Runtime-checked variant — throws if it won't fit
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template <size_t array_size>
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void strcpy_checked(char (&destination)[array_size], const char *source) {
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if (!source)
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throw std::runtime_error("Null source pointer in strcpy_checked");
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size_t len = std::strlen(source);
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if (len >= (array_size - 1)) {
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throw std::runtime_error("String length (" + std::to_string(len) +
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") should be less than " +
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std::to_string(array_size - 1) + " chars");
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}
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std::strncpy(destination, source, array_size - 1);
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destination[array_size - 1] = '\0';
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}
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template <size_t array_size>
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void strcpy_checked(char (&destination)[array_size],
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const std::string &source) {
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if (source.size() >= (array_size - 1)) {
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throw std::runtime_error("String length (" +
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std::to_string(source.size()) +
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") should be less than " +
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std::to_string(array_size - 1) + " chars");
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}
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std::strncpy(destination, source.c_str(), array_size - 1);
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destination[array_size - 1] = '\0';
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}
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/*
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Removes all occurrences of the specified char from a c string
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Templated on array size to ensure no access after buffer limits.
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*/
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template <size_t array_size> void removeChar(char (&str)[array_size], char ch) {
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int count = 0;
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for (int i = 0; str[i]; i++) {
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if (str[i] != ch)
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str[count++] = str[i];
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if (i == array_size - 1)
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break;
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}
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str[count] = '\0';
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}
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/*
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Split a string using the specified delimeter and return a vector of strings.
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TODO! Look into switching to absl or a string_view based implementation. Current
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implementation should not be used in a performance critical place.
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*/
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std::vector<std::string> split(const std::string &strToSplit, char delimeter);
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std::string RemoveUnit(std::string &str);
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bool is_int(const std::string &s);
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/** '0x200' is also an int here */
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bool is_hex_or_dec_uint(const std::string &s);
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bool replace_first(std::string *s, const std::string &substr,
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const std::string &repl);
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std::pair<std::string, uint16_t> ParseHostPort(const std::string &s);
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} // namespace sls
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