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// Copyright (c) 2026 Progmasoft.
// SPDX-License-Identifier: MPL-2.0 WITH AdditionRef-Progmasoft-Exception-2.0
#include <algorithm>
#include <cctype>
#include <charconv>
#include <utility>
#include <vector>
#include "tools/Versions.hpp"
namespace Progmasoft::Catch3::Tools
{
namespace
{
constexpr std::string_view kVersionHeader
= "src/Progmasoft/Catch3/Version.hpp";
} // namespace
std::optional<Version>
ParseVersion(std::string_view text)
{
Version version{};
std::size_t count = 0;
while (true)
{
const auto dot = text.find('.');
const auto number = text.substr(0, dot);
if (count == version.size() || number.empty()
|| (number.size() > 1 && number.front() == '0'))
{
return std::nullopt;
}
const auto *end = number.data() + number.size();
const auto parsed
= std::from_chars(number.data(), end, version[count]);
if (parsed.ec != std::errc{} || parsed.ptr != end)
{
return std::nullopt;
}
++count;
if (dot == std::string_view::npos)
{
break;
}
text.remove_prefix(dot + 1);
}
if (count < 3)
{
return std::nullopt;
}
return version;
}
std::string
FormatVersion(const Version &version)
{
return std::to_string(version[0]) + "." + std::to_string(version[1])
+ "." + std::to_string(version[2]) + "."
+ std::to_string(version[3]);
}
Version
NextVersion(Version version)
{
if (version[3] < 9)
{
++version[3];
return version;
}
version[3] = 0;
if (version[2] < 9)
{
++version[2];
return version;
}
version[2] = 0;
if (version[1] < 19)
{
++version[1];
return version;
}
version[1] = 0;
++version[0];
return version;
}
const std::array<VersionSite, 5> &
VersionSites()
{
static constexpr std::array<VersionSite, 5> kSites{ {
{ "CMakeLists.txt", "\n VERSION ", "\n" },
{ "MODULE.bazel", "module(name = \"catch3\", version = \"", "\"" },
{ "meson.build", "\n version: '", "'" },
{ "xmake.lua", "\nset_version(\"", "\"" },
{ kVersionHeader, "kVersion = \"", "\"" },
} };
return kSites;
}
std::optional<std::string>
ReadVersionSite(std::string_view text, const VersionSite &site)
{
const auto before = text.find(site.Before);
if (before == std::string_view::npos)
{
return std::nullopt;
}
const auto first = before + site.Before.size();
const auto end = text.find(site.After, first);
if (end == std::string_view::npos)
{
return std::nullopt;
}
return std::string{ text.substr(first, end - first) };
}
std::optional<std::string>
WriteVersionSite(std::string_view text,
const VersionSite &site,
std::string_view version)
{
const auto current = ReadVersionSite(text, site);
if (!current)
{
return std::nullopt;
}
const auto first = text.find(site.Before) + site.Before.size();
std::string result{ text.substr(0, first) };
result += version;
result += text.substr(first + current->size());
return result;
}
std::optional<std::string>
CurrentVersion(const std::filesystem::path &root, Problems &problems)
{
const auto &sites = VersionSites();
const auto &site
= *std::find_if(sites.begin(),
sites.end(),
[](const VersionSite &candidate) {
return candidate.File == kVersionHeader;
});
auto version
= ReadVersionSite(ReadOrReport(root / site.File, problems), site);
if (!version)
{
problems.emplace_back("no version in Version.hpp");
}
return version;
}
void
CheckVersions(const std::filesystem::path &root, Problems &problems)
{
const auto current = CurrentVersion(root, problems);
if (!current)
{
return;
}
for (const auto &site : VersionSites())
{
const auto version
= ReadVersionSite(ReadOrReport(root / site.File, problems),
site);
if (version != current)
{
problems.push_back(std::string{ site.File } + " states "
+ version.value_or("no version")
+ ", Version.hpp states " + *current);
}
}
}
void
SetVersion(const std::filesystem::path &root,
const std::string &version,
Problems &problems)
{
std::vector<std::pair<std::filesystem::path, std::string>> writes;
for (const auto &site : VersionSites())
{
const auto path = root / site.File;
auto text
= WriteVersionSite(ReadOrReport(path, problems), site, version);
if (text)
{
writes.emplace_back(path, *std::move(text));
}
else
{
problems.push_back("cannot set the version in "
+ std::string{ site.File });
}
}
// All of them or none, so that the places never disagree.
if (!problems.empty())
{
return;
}
for (const auto &[path, text] : writes)
{
if (!WriteText(path, text))
{
problems.push_back("cannot write " + path.generic_string());
}
}
}
std::optional<std::string>
ReleaseNotesOf(std::string_view notes, std::string_view version)
{
auto heading = "\n## " + std::string{ version } + "\n";
auto found = notes.find(heading);
// A release with D = 0 may be headed by its three numbers.
const auto parsed = ParseVersion(version);
if (found == std::string_view::npos && parsed && (*parsed)[3] == 0)
{
heading = "\n## " + std::to_string((*parsed)[0]) + "."
+ std::to_string((*parsed)[1]) + "."
+ std::to_string((*parsed)[2]) + "\n";
found = notes.find(heading);
}
if (found == std::string_view::npos)
{
return std::nullopt;
}
auto section = notes.substr(found + heading.size());
section = section.substr(0, section.find("\n## "));
return std::string{ Trimmed(section) } + "\n";
}
} // namespace Progmasoft::Catch3::Tools
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