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author Paper <paper@tflc.us>
date Thu, 06 Nov 2025 01:12:39 -0500
parents 1faa72660932
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343
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Paper <paper@paper.us.eu.org>
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1 // Formatting library for C++ - formatting library tests
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2 //
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3 // Copyright (c) 2012 - present, Victor Zverovich
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4 // All rights reserved.
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5 //
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6 // For the license information refer to format.h.
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7
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8 #include <iterator>
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9 #include <vector>
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10
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11 #define I 42 // simulate https://en.cppreference.com/w/c/numeric/complex/I
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12 #include "fmt/chrono.h"
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13 #include "fmt/color.h"
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14 #include "fmt/format.h"
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15 #include "fmt/ostream.h"
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16 #include "fmt/ranges.h"
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17 #include "fmt/xchar.h"
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18 #undef I
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19
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20 // Exercise the API to verify that everything we expect to can compile.
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21 void test_format_api() {
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22 (void)fmt::format(FMT_STRING("{}"), 42);
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23 (void)fmt::format(FMT_STRING(L"{}"), 42);
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24 (void)fmt::format(FMT_STRING("noop"));
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25
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26 (void)fmt::to_string(42);
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27 (void)fmt::to_wstring(42);
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28
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29 std::vector<char> out;
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30 fmt::format_to(std::back_inserter(out), FMT_STRING("{}"), 42);
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31
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32 char buffer[4];
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33 fmt::format_to_n(buffer, 3, FMT_STRING("{}"), 12345);
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34
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35 wchar_t wbuffer[4];
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36 fmt::format_to_n(wbuffer, 3, FMT_STRING(L"{}"), 12345);
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37 }
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38
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39 void test_chrono() {
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40 (void)fmt::format(FMT_STRING("{}"), std::chrono::seconds(42));
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41 (void)fmt::format(FMT_STRING(L"{}"), std::chrono::seconds(42));
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42 }
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43
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44 void test_text_style() {
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45 fmt::print(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"), "rgb(255,20,30)");
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46 (void)fmt::format(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"),
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47 "rgb(255,20,30)");
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48
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49 fmt::text_style ts = fg(fmt::rgb(255, 20, 30));
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50 std::string out;
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51 fmt::format_to(std::back_inserter(out), ts,
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52 FMT_STRING("rgb(255,20,30){}{}{}"), 1, 2, 3);
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53 }
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54
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55 void test_range() {
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56 std::vector<char> hello = {'h', 'e', 'l', 'l', 'o'};
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57 (void)fmt::format(FMT_STRING("{}"), hello);
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58 }
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59
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60 int main() {
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61 test_format_api();
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62 test_chrono();
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63 test_text_style();
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64 test_range();
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65 }