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// Copyright (C) 2024 Simon Quigley <tsimonq2@ubuntu.com>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include "update-maintainer-lib.h"
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#include "update-maintainer.h"
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#include <filesystem>
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#include <fstream>
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#include <iostream>
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#include <regex>
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#include <stdexcept>
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#include <string>
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#include <optional>
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namespace fs = std::filesystem;
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// Definitions from update-maintainer.cpp moved here
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static const char* PREVIOUS_UBUNTU_MAINTAINERS[] = {
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"ubuntu core developers <ubuntu-devel@lists.ubuntu.com>",
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"ubuntu core developers <ubuntu-devel-discuss@lists.ubuntu.com>",
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"ubuntu motu developers <ubuntu-motu@lists.ubuntu.com>"
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};
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static const char* UBUNTU_MAINTAINER = "Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>";
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class MaintainerUpdateException : public std::runtime_error {
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public:
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using std::runtime_error::runtime_error;
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};
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static std::optional<fs::path> find_control_file(const fs::path &debian_dir) {
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fs::path control_in = debian_dir / "control.in";
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fs::path control = debian_dir / "control";
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if (fs::exists(control_in)) return control_in;
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if (fs::exists(control)) return control;
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return std::nullopt;
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}
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static fs::path find_changelog_file(const fs::path &debian_dir) {
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fs::path changelog = debian_dir / "changelog";
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if (!fs::exists(changelog)) {
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throw MaintainerUpdateException("No changelog file found");
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}
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return changelog;
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}
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static bool xsbc_managed_by_rules(const fs::path &debian_dir) {
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fs::path rules = debian_dir / "rules";
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if (!fs::exists(rules)) return false;
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std::ifstream rf(rules);
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std::string line;
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while (std::getline(rf, line)) {
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if (line.find("XSBC-Original-") != std::string::npos) {
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return true;
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}
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}
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return false;
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}
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static std::string get_distribution(const fs::path &changelog_file) {
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// parse first line of changelog: "package (version) dist; urgency=..."
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// dist is the token after ')'
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std::ifstream f(changelog_file);
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if(!f) throw MaintainerUpdateException("Unable to open changelog.");
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std::string first_line;
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std::getline(f, first_line);
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size_t pos = first_line.find(')');
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if(pos == std::string::npos) throw MaintainerUpdateException("Invalid changelog format");
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pos++;
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while(pos < first_line.size() && std::isspace((unsigned char)first_line[pos])) pos++;
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size_t start = pos;
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while(pos < first_line.size() && !std::isspace((unsigned char)first_line[pos]) && first_line[pos] != ';') pos++;
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std::string dist = first_line.substr(start, pos - start);
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size_t dashpos = dist.find('-');
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if (dashpos != std::string::npos) {
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dist = dist.substr(0, dashpos);
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}
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return dist;
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}
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static std::string read_file(const fs::path &p) {
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std::ifstream f(p);
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if(!f) throw MaintainerUpdateException("Cannot read file: " + p.string());
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std::stringstream ss;
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ss << f.rdbuf();
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return ss.str();
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}
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static void write_file(const fs::path &p, const std::string &content) {
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std::ofstream f(p);
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if(!f) throw MaintainerUpdateException("Cannot write file: " + p.string());
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f << content;
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}
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static std::optional<std::string> get_field(const std::string &content, const std::string &field_regex) {
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std::regex r(field_regex, std::regex_constants::multiline);
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std::smatch m;
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if(std::regex_search(content, m, r)) {
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return m[1].str();
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}
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return std::nullopt;
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}
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static std::string set_field(const std::string &content, const std::string &field_regex, const std::string &new_line) {
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std::regex r(field_regex, std::regex_constants::multiline);
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return std::regex_replace(content, r, new_line);
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}
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static void update_maintainer_file(const fs::path &control_file, const std::string &distribution, bool verbose) {
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std::string c = read_file(control_file);
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auto original_maintainer = get_field(c, "^Maintainer:\\s?(.*)$");
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if(!original_maintainer) {
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throw MaintainerUpdateException("No Maintainer field found");
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}
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std::string om = *original_maintainer;
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std::string om_lower = om;
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for (auto &ch : om_lower) ch = (char)std::tolower((unsigned char)ch);
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// Check previous ubuntu maintainers
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for (auto &pm : PREVIOUS_UBUNTU_MAINTAINERS) {
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std::string pm_lower = pm;
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for (auto &ch: pm_lower) ch=(char)std::tolower((unsigned char)ch);
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if(pm_lower == om_lower) {
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if(verbose) {
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std::cout<<"The old maintainer was: "<<om<<"\n";
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std::cout<<"Resetting as: "<<UBUNTU_MAINTAINER<<"\n";
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}
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// just set maintainer
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std::regex maint_re("^Maintainer:\\s?.*$", std::regex_constants::multiline);
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c = std::regex_replace(c, maint_re, "Maintainer: " + std::string(UBUNTU_MAINTAINER));
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write_file(control_file, c);
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return;
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}
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}
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// If ends with ubuntu.com, do nothing
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{
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std::string lower_om = om_lower;
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if (lower_om.rfind("ubuntu.com>", lower_om.size()-11) != std::string::npos) {
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if(verbose) {
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std::cout<<"The Maintainer email is ubuntu.com address. Doing nothing.\n";
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}
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return;
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}
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}
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// Debian distributions: stable, testing, unstable, experimental
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if(distribution=="stable"||distribution=="testing"||distribution=="unstable"||distribution=="experimental") {
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if(verbose) {
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std::cout<<"The package targets Debian. Doing nothing.\n";
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}
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return;
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}
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// set XSBC-Original-Maintainer if needed
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auto orig_field = get_field(c, "^(?:[XSBC]*-)?Original-Maintainer:\\s?(.*)$");
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if(orig_field && verbose) {
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std::cout<<"Overwriting original maintainer: "<< *orig_field <<"\n";
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}
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if(verbose) {
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std::cout<<"The original maintainer is: "<< om <<"\n";
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std::cout<<"Resetting as: "<<UBUNTU_MAINTAINER<<"\n";
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}
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// set original maint
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if(orig_field) {
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// pattern to replace original maint
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std::regex orig_re("^(?:[XSBC]*-)?Original-Maintainer:.*$", std::regex_constants::multiline);
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c = std::regex_replace(c, orig_re, "XSBC-Original-Maintainer: " + om);
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} else {
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// insert after Maintainer line
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std::regex maint_re("^(Maintainer:.*)$", std::regex_constants::multiline);
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c = std::regex_replace(c, maint_re, "$1\nXSBC-Original-Maintainer: " + om);
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}
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// now set maint
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{
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std::regex maint_re("^Maintainer:\\s?.*$", std::regex_constants::multiline);
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c = std::regex_replace(c, maint_re, "Maintainer: " + std::string(UBUNTU_MAINTAINER));
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}
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write_file(control_file, c);
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}
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void update_maintainer(const std::string &debian_directory, bool verbose) {
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fs::path debian_dir(debian_directory);
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auto control_file = find_control_file(debian_dir);
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if(!control_file) {
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throw MaintainerUpdateException("No control file found");
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}
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fs::path changelog = find_changelog_file(debian_dir);
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if(xsbc_managed_by_rules(debian_dir)) {
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if(verbose) {
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std::cout<<"XSBC-Original is managed by rules. Doing nothing.\n";
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}
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return;
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}
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std::string distribution = get_distribution(changelog);
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update_maintainer_file(*control_file, distribution, verbose);
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}
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@ -0,0 +1,19 @@
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// Copyright (C) 2024 Simon Quigley <tsimonq2@ubuntu.com>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#pragma once
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#include <string>
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void update_maintainer(const std::string &debian_directory, bool verbose = false);
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Loading…
Reference in new issue