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/**************************************************************************/
/* semver.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "semver.h"
bool godotsharp::SemVer::parse_digit_only_field(const String &p_field, uint64_t &r_result) {
if (p_field.is_empty()) {
return false;
}
int64_t integer = 0;
for (int i = 0; i < p_field.length(); i++) {
char32_t c = p_field[i];
if (is_digit(c)) {
bool overflow = ((uint64_t)integer > UINT64_MAX / 10) || ((uint64_t)integer == UINT64_MAX / 10 && c > '5');
ERR_FAIL_COND_V_MSG(overflow, false, "Cannot represent '" + p_field + "' as a 64-bit unsigned integer, since the value is too large.");
integer *= 10;
integer += c - '0';
} else {
return false;
}
}
r_result = (uint64_t)integer;
return true;
}
int godotsharp::SemVer::cmp(const godotsharp::SemVer &p_a, const godotsharp::SemVer &p_b) {
if (p_a.major != p_b.major) {
return p_a.major > p_b.major ? 1 : -1;
}
if (p_a.minor != p_b.minor) {
return p_a.minor > p_b.minor ? 1 : -1;
}
if (p_a.patch != p_b.patch) {
return p_a.patch > p_b.patch ? 1 : -1;
}
if (p_a.prerelease.is_empty() && p_b.prerelease.is_empty()) {
return 0;
}
if (p_a.prerelease.is_empty() || p_b.prerelease.is_empty()) {
return p_a.prerelease.is_empty() ? 1 : -1;
}
if (p_a.prerelease != p_b.prerelease) {
// This could be optimized, but I'm too lazy
Vector<String> a_field_set = p_a.prerelease.split(".");
Vector<String> b_field_set = p_b.prerelease.split(".");
int a_field_count = a_field_set.size();
int b_field_count = b_field_set.size();
int min_field_count = MIN(a_field_count, b_field_count);
for (int i = 0; i < min_field_count; i++) {
const String &a_field = a_field_set[i];
const String &b_field = b_field_set[i];
if (a_field == b_field) {
continue;
}
uint64_t a_num;
bool a_is_digit_only = parse_digit_only_field(a_field, a_num);
uint64_t b_num;
bool b_is_digit_only = parse_digit_only_field(b_field, b_num);
if (a_is_digit_only && b_is_digit_only) {
// Identifiers consisting of only digits are compared numerically.
if (a_num == b_num) {
continue;
}
return a_num > b_num ? 1 : -1;
}
if (a_is_digit_only || b_is_digit_only) {
// Numeric identifiers always have lower precedence than non-numeric identifiers.
return b_is_digit_only ? 1 : -1;
}
// Identifiers with letters or hyphens are compared lexically in ASCII sort order.
return a_field > b_field ? 1 : -1;
}
if (a_field_count != b_field_count) {
// A larger set of pre-release fields has a higher precedence than a smaller set, if all of the preceding identifiers are equal.
return a_field_count > b_field_count ? 1 : -1;
}
}
return 0;
}
bool godotsharp::SemVerParser::parse(const String &p_ver_text, godotsharp::SemVer &r_semver) {
if (!regex.is_valid() && regex.get_pattern().is_empty()) {
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-]+)*))?$");
ERR_FAIL_COND_V(!regex.is_valid(), false);
}
Ref<RegExMatch> match = regex.search(p_ver_text);
if (match.is_valid()) {
r_semver = SemVer(
match->get_string("major").to_int(),
match->get_string("minor").to_int(),
match->get_string("patch").to_int(),
match->get_string("prerelease"),
match->get_string("buildmetadata"));
return true;
}
return false;
}
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