Split logger.h into 3 files

This commit is contained in:
Andreas Tsouchlos 2021-11-18 20:56:02 +01:00
parent 9fe2659ba9
commit e028e43b6a
3 changed files with 233 additions and 259 deletions

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@ -1,267 +1,13 @@
#ifndef CPP_SANDBOX_LOGGER_H
#define CPP_SANDBOX_LOGGER_H
#ifndef LOGGER_LOGGER_H
#define LOGGER_LOGGER_H
#include <array>
#include <iostream>
#include <tuple>
/*
*
* Const string
*
*/
template <std::size_t N>
class ConstString {
public:
constexpr ConstString(const char (&content)[N]) noexcept {
std::copy(std::begin(content), std::end(content),
std::begin(m_content));
}
constexpr char operator[](std::size_t index) const noexcept {
return m_content[index];
}
constexpr std::size_t size() const noexcept {
return N-1;
}
std::array<char, N> m_content;
};
template <std::size_t N>
ConstString(const char (&)[N]) -> ConstString<N>;
/*
*
* Parsing
*
*/
//template <ConstString s, char c>
//constexpr bool has_char() {
// bool result = false;
//
// for (unsigned i = 0; i < s.size(); ++i) {
// if (s[i] == c)
// result = true;
// }
//
// return result;
//}
//
//template <ConstString s, char c>
//constexpr std::size_t get_char_index() {
// static_assert(has_char<s, c>(),
// "ConstString does not contain the specified character");
//
// std::size_t result = s.size() + 1;
//
// for (unsigned i = 0; i < s.size(); ++i) {
// if (s[i] == c) {
// result = i;
// break;
// }
// }
//
// return result;
//}
template<std::size_t N>
constexpr bool is_digit(ConstString<N> s, unsigned i) {
return (s[i] > 47) && (s[i] < 58);
}
template<std::size_t N>
constexpr std::pair<unsigned, int> parse_number(ConstString<N> s, unsigned i) {
while ((i < s.size()) && is_digit(s, i)) {
++i;
}
return {i, 0};
}
template<std::size_t N>
constexpr std::pair<unsigned, int> parse_type(ConstString<N> s, unsigned i) {
if (s[i] == 's') { // string
++i;
return {i, 0};
} else if (s[i] == 'c') { // char
++i;
return {i, 0};
} else if (s[i] == 'b') { // int
++i;
return {i, 0};
} else if (s[i] == 'B') {
++i;
return {i, 0};
} else if (s[i] == 'c') {
++i;
return {i, 0};
} else if (s[i] == 'd') {
++i;
return {i, 0};
} else if (s[i] == '0') {
++i;
return {i, 0};
} else if (s[i] == 'x') {
++i;
return {i, 0};
} else if (s[i] == 'X') {
++i;
return {i, 0};
} else if (s[i] == 'a') { // float
++i;
return {i, 0};
} else if (s[i] == 'A') {
++i;
return {i, 0};
} else if (s[i] == 'e') {
++i;
return {i, 0};
} else if (s[i] == 'E') {
++i;
return {i, 0};
} else if (s[i] == 'f') {
++i;
return {i, 0};
} else if (s[i] == 'F') {
++i;
return {i, 0};
} else if (s[i] == 'g') {
++i;
return {i, 0};
} else if (s[i] == 'G') {
++i;
return {i, 0};
} else if (s[i] == 'p') { // pointer
++i;
return {i, 0};
}
return {i, -1};
}
template<std::size_t N>
constexpr std::pair<unsigned, int> parse_fmt_string(ConstString<N> s, unsigned i) {
int result_extra_len = 0;
if (s[i] == '0')
++i;
if (is_digit(s, i)) {
auto [new_i, extra_len] = parse_number(s, i);
if (extra_len < 0)
return {i, -1};
i = new_i;
result_extra_len += extra_len;
}
if (s[i] == '.') {
++i;
auto [new_i, extra_len] = parse_number(s, i);
if (extra_len < 0)
return {i, -1};
i = new_i;
result_extra_len += extra_len;
}
if (s[i] != '}') {
auto [new_i, extra_len] = parse_type(s, i);
if (extra_len < 0)
return {i, -1};
i = new_i;
result_extra_len += extra_len;
}
return {i, result_extra_len};
}
template<std::size_t N>
constexpr std::pair<unsigned, int> parse_braces(ConstString<N> s, unsigned i) {
int result_extra_len = 0;
if (s[i] == '}') {
++i;
return {i, result_extra_len};
} else if (s[i] == ':') {
++i;
auto [new_i, extra_len] = parse_fmt_string(s, i);
if (extra_len < 0)
return {i, -1};
i = new_i;
result_extra_len += extra_len;
if (s[i] == '}') {
++i;
return {i, result_extra_len};
}
}
return {i, -1};
}
template<std::size_t N>
constexpr int get_output_len(ConstString<N> s) {
int result_extra_len = 0;
for (unsigned i = 0; i < s.size(); ++i) {
if (s[i] == '{') {
++i;
auto [new_i, extra_len] = parse_braces(s, i);
if (extra_len < 0)
return -1;
i = new_i;
result_extra_len += extra_len;
} else if (s[i] == '}') {
return -1;
}
}
return (result_extra_len + s.size());
}
// clang-format off
/*
*
* fmtlib grammar:
* replacement_field ::= "{" [arg_id] [":" (format_spec | chrono_format_spec)] "}"
* arg_id ::= integer | identifier
* integer ::= digit+
* digit ::= "0"..."9"
* identifier ::= id_start id_continue*
* id_start ::= "a"..."z" | "A"..."Z" | "_"
* id_continue ::= id_start | digit
*
* format_spec ::= [[fill]align][sign]["#"]["0"][width]["." precision]["L"][type]
* fill ::= <a character other than '{' or '}'>
* align ::= "<" | ">" | "^"
* sign ::= "+" | "-" | " "
* width ::= integer | "{" [arg_id] "}"
* precision ::= integer | "{" [arg_id] "}"
* type ::= "a" | "A" | "b" | "B" | "c" | "d" | "e" | "E" | "f" | "F" | "g" | "G" |
* "o" | "p" | "s" | "x" | "X"
*
* grammar:
* string ::= { braces | <a character other than '{' or '}'> }
* braces ::= "{" [":" fmt_string] "}"
* fmt_string ::= ["0"][width]["." precision][type]
*
*/
// clang-format on
#include <utility.h>
#include <parsing.h>
/*
@ -299,4 +45,4 @@ private:
};
#endif // CPP_SANDBOX_LOGGER_H
#endif // LOGGER_LOGGER_H

200
inc/parsing.h Normal file
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@ -0,0 +1,200 @@
//
// Created by andreas on 11/18/21.
//
#ifndef LOGGER_PARSING_H
#define LOGGER_PARSING_H
// clang-format off
/*
*
* fmtlib grammar:
* replacement_field ::= "{" [arg_id] [":" (format_spec | chrono_format_spec)] "}"
* arg_id ::= integer | identifier
* integer ::= digit+
* digit ::= "0"..."9"
* identifier ::= id_start id_continue*
* id_start ::= "a"..."z" | "A"..."Z" | "_"
* id_continue ::= id_start | digit
*
* format_spec ::= [[fill]align][sign]["#"]["0"][width]["." precision]["L"][type]
* fill ::= <a character other than '{' or '}'>
* align ::= "<" | ">" | "^"
* sign ::= "+" | "-" | " "
* width ::= integer | "{" [arg_id] "}"
* precision ::= integer | "{" [arg_id] "}"
* type ::= "a" | "A" | "b" | "B" | "c" | "d" | "e" | "E" | "f" | "F" | "g" | "G" |
* "o" | "p" | "s" | "x" | "X"
*
* grammar:
* string ::= { braces | <a character other than '{' or '}'> }
* braces ::= "{" [":" fmt_string] "}"
* fmt_string ::= ["0"][width]["." precision][type]
*
*/
// clang-format on
template<std::size_t N>
constexpr bool is_digit(ConstString<N> s, unsigned i) {
return (s[i] > 47) && (s[i] < 58);
}
template<std::size_t N>
constexpr std::pair<unsigned, int> parse_number(ConstString<N> s, unsigned i) {
while ((i < s.size()) && is_digit(s, i)) {
++i;
}
return {i, 0};
}
template<std::size_t N>
constexpr std::pair<unsigned, int> parse_type(ConstString<N> s, unsigned i) {
if (s[i] == 's') { // string
++i;
return {i, 0};
} else if (s[i] == 'c') { // char
++i;
return {i, 0};
} else if (s[i] == 'b') { // int
++i;
return {i, 0};
} else if (s[i] == 'B') {
++i;
return {i, 0};
} else if (s[i] == 'c') {
++i;
return {i, 0};
} else if (s[i] == 'd') {
++i;
return {i, 0};
} else if (s[i] == '0') {
++i;
return {i, 0};
} else if (s[i] == 'x') {
++i;
return {i, 0};
} else if (s[i] == 'X') {
++i;
return {i, 0};
} else if (s[i] == 'a') { // float
++i;
return {i, 0};
} else if (s[i] == 'A') {
++i;
return {i, 0};
} else if (s[i] == 'e') {
++i;
return {i, 0};
} else if (s[i] == 'E') {
++i;
return {i, 0};
} else if (s[i] == 'f') {
++i;
return {i, 0};
} else if (s[i] == 'F') {
++i;
return {i, 0};
} else if (s[i] == 'g') {
++i;
return {i, 0};
} else if (s[i] == 'G') {
++i;
return {i, 0};
} else if (s[i] == 'p') { // pointer
++i;
return {i, 0};
}
return {i, -1};
}
template<std::size_t N>
constexpr std::pair<unsigned, int> parse_fmt_string(ConstString<N> s, unsigned i) {
int result_extra_len = 0;
if (s[i] == '0')
++i;
if (is_digit(s, i)) {
auto [new_i, extra_len] = parse_number(s, i);
if (extra_len < 0)
return {i, -1};
i = new_i;
result_extra_len += extra_len;
}
if (s[i] == '.') {
++i;
auto [new_i, extra_len] = parse_number(s, i);
if (extra_len < 0)
return {i, -1};
i = new_i;
result_extra_len += extra_len;
}
if (s[i] != '}') {
auto [new_i, extra_len] = parse_type(s, i);
if (extra_len < 0)
return {i, -1};
i = new_i;
result_extra_len += extra_len;
}
return {i, result_extra_len};
}
template<std::size_t N>
constexpr std::pair<unsigned, int> parse_braces(ConstString<N> s, unsigned i) {
int result_extra_len = 0;
if (s[i] == '}') {
++i;
return {i, result_extra_len};
} else if (s[i] == ':') {
++i;
auto [new_i, extra_len] = parse_fmt_string(s, i);
if (extra_len < 0)
return {i, -1};
i = new_i;
result_extra_len += extra_len;
if (s[i] == '}') {
++i;
return {i, result_extra_len};
}
}
return {i, -1};
}
template<std::size_t N>
constexpr int get_output_len(ConstString<N> s) {
int result_extra_len = 0;
for (unsigned i = 0; i < s.size(); ++i) {
if (s[i] == '{') {
++i;
auto [new_i, extra_len] = parse_braces(s, i);
if (extra_len < 0)
return -1;
i = new_i;
result_extra_len += extra_len;
} else if (s[i] == '}') {
return -1;
}
}
return (result_extra_len + s.size());
}
#endif //LOGGER_PARSING_H

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inc/utility.h Normal file
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@ -0,0 +1,28 @@
#ifndef LOGGER_UTILITY_H
#define LOGGER_UTILITY_H
template <std::size_t N>
class ConstString {
public:
constexpr ConstString(const char (&content)[N]) noexcept {
std::copy(std::begin(content), std::end(content),
std::begin(m_content));
}
constexpr char operator[](std::size_t index) const noexcept {
return m_content[index];
}
constexpr std::size_t size() const noexcept {
return N-1;
}
std::array<char, N> m_content;
};
template <std::size_t N>
ConstString(const char (&)[N]) -> ConstString<N>;
#endif //LOGGER_UTILITY_H