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synced 2024-09-05 17:49:51 +00:00
![Rémi Verschelde](/assets/img/avatar_default.png)
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
150 lines
5.5 KiB
C++
150 lines
5.5 KiB
C++
/**************************************************************************/
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/* semver.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "semver.h"
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bool godotsharp::SemVer::parse_digit_only_field(const String &p_field, uint64_t &r_result) {
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if (p_field.is_empty()) {
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return false;
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}
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int64_t integer = 0;
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for (int i = 0; i < p_field.length(); i++) {
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char32_t c = p_field[i];
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if (is_digit(c)) {
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bool overflow = ((uint64_t)integer > UINT64_MAX / 10) || ((uint64_t)integer == UINT64_MAX / 10 && c > '5');
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ERR_FAIL_COND_V_MSG(overflow, false, "Cannot represent '" + p_field + "' as a 64-bit unsigned integer, since the value is too large.");
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integer *= 10;
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integer += c - '0';
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} else {
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return false;
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}
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}
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r_result = (uint64_t)integer;
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return true;
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}
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int godotsharp::SemVer::cmp(const godotsharp::SemVer &p_a, const godotsharp::SemVer &p_b) {
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if (p_a.major != p_b.major) {
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return p_a.major > p_b.major ? 1 : -1;
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}
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if (p_a.minor != p_b.minor) {
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return p_a.minor > p_b.minor ? 1 : -1;
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}
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if (p_a.patch != p_b.patch) {
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return p_a.patch > p_b.patch ? 1 : -1;
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}
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if (p_a.prerelease.is_empty() && p_b.prerelease.is_empty()) {
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return 0;
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}
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if (p_a.prerelease.is_empty() || p_b.prerelease.is_empty()) {
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return p_a.prerelease.is_empty() ? 1 : -1;
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}
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if (p_a.prerelease != p_b.prerelease) {
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// This could be optimized, but I'm too lazy
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Vector<String> a_field_set = p_a.prerelease.split(".");
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Vector<String> b_field_set = p_b.prerelease.split(".");
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int a_field_count = a_field_set.size();
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int b_field_count = b_field_set.size();
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int min_field_count = MIN(a_field_count, b_field_count);
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for (int i = 0; i < min_field_count; i++) {
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const String &a_field = a_field_set[i];
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const String &b_field = b_field_set[i];
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if (a_field == b_field) {
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continue;
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}
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uint64_t a_num;
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bool a_is_digit_only = parse_digit_only_field(a_field, a_num);
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uint64_t b_num;
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bool b_is_digit_only = parse_digit_only_field(b_field, b_num);
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if (a_is_digit_only && b_is_digit_only) {
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// Identifiers consisting of only digits are compared numerically.
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if (a_num == b_num) {
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continue;
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}
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return a_num > b_num ? 1 : -1;
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}
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if (a_is_digit_only || b_is_digit_only) {
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// Numeric identifiers always have lower precedence than non-numeric identifiers.
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return b_is_digit_only ? 1 : -1;
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}
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// Identifiers with letters or hyphens are compared lexically in ASCII sort order.
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return a_field > b_field ? 1 : -1;
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}
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if (a_field_count != b_field_count) {
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// A larger set of pre-release fields has a higher precedence than a smaller set, if all of the preceding identifiers are equal.
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return a_field_count > b_field_count ? 1 : -1;
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}
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}
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return 0;
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}
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bool godotsharp::SemVerParser::parse(const String &p_ver_text, godotsharp::SemVer &r_semver) {
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if (!regex.is_valid() && regex.get_pattern().is_empty()) {
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regex.compile("^(?P<major>0|[1-9]\\d*)\\.(?P<minor>0|[1-9]\\d*)\\.(?P<patch>0|[1-9]\\d*)(?:-(?P<prerelease>(?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\\.(?:0|[1-9]\\d*|\\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\\+(?P<buildmetadata>[0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?$");
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ERR_FAIL_COND_V(!regex.is_valid(), false);
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}
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Ref<RegExMatch> match = regex.search(p_ver_text);
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if (match.is_valid()) {
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r_semver = SemVer(
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match->get_string("major").to_int(),
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match->get_string("minor").to_int(),
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match->get_string("patch").to_int(),
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match->get_string("prerelease"),
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match->get_string("buildmetadata"));
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return true;
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}
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return false;
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}
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