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// SPDX-License-Identifier: GPL-2.0-or-later
#include "global-palettes.h"
#include <iomanip>
// Using Glib::regex because
// - std::regex is too slow in debug mode.
// - boost::regex requires a library not present in the CI image.
#include <glibmm/i18n.h>
#include <glibmm/miscutils.h>
#include <glibmm/regex.h>
#include "io/resource.h"
#include "io/sys.h"
Inkscape::UI::Dialog::PaletteFileData::PaletteFileData(Glib::ustring const &path)
{
name = Glib::path_get_basename(path);
columns = 1;
user = Inkscape::IO::file_is_writable(path.c_str());
auto f = std::unique_ptr<FILE, void(*)(FILE*)>(Inkscape::IO::fopen_utf8name(path.c_str(), "r"), [] (FILE *f) {if (f) std::fclose(f);});
if (!f) throw std::runtime_error("Failed to open file");
char buf[1024];
if (!std::fgets(buf, sizeof(buf), f.get())) throw std::runtime_error("File is empty");
if (std::strncmp("GIMP Palette", buf, 12) != 0) throw std::runtime_error("First line is wrong");
static auto const regex_rgb = Glib::Regex::create("\\s*(\\d+)\\s+(\\d+)\\s+(\\d+)\\s*(?:\\s(.*\\S)\\s*)?$", Glib::REGEX_OPTIMIZE | Glib::REGEX_ANCHORED);
static auto const regex_name = Glib::Regex::create("\\s*Name:\\s*(.*\\S)", Glib::REGEX_OPTIMIZE | Glib::REGEX_ANCHORED);
static auto const regex_cols = Glib::Regex::create("\\s*Columns:\\s*(.*\\S)", Glib::REGEX_OPTIMIZE | Glib::REGEX_ANCHORED);
static auto const regex_blank = Glib::Regex::create("\\s*(?:$|#)", Glib::REGEX_OPTIMIZE | Glib::REGEX_ANCHORED);
while (std::fgets(buf, sizeof(buf), f.get())) {
auto line = Glib::ustring(buf); // Unnecessary copy required until using a glibmm with support for string views. TODO: Fix when possible.
Glib::MatchInfo match;
if (regex_rgb->match(line, match)) { // ::regex_match(line, match, boost::regex(), boost::regex_constants::match_continuous)) {
// RGB color, followed by an optional name.
Color color;
for (int i = 0; i < 3; i++) {
color.rgb[i] = std::clamp(std::stoi(match.fetch(i + 1)), 0, 255);
}
color.name = match.fetch(4);
if (!color.name.empty()) {
// Translate the name if present.
color.name = g_dpgettext2(nullptr, "Palette", color.name.c_str());
} else {
// Otherwise, set the name to be the hex value.
color.name = Glib::ustring::compose("#%1%2%3",
Glib::ustring::format(std::hex, std::setw(2), std::setfill(L'0'), color.rgb[0]),
Glib::ustring::format(std::hex, std::setw(2), std::setfill(L'0'), color.rgb[1]),
Glib::ustring::format(std::hex, std::setw(2), std::setfill(L'0'), color.rgb[2])
).uppercase();
}
colors.emplace_back(std::move(color));
} else if (regex_name->match(line, match)) {
// Header entry for name.
name = match.fetch(1);
} else if (regex_cols->match(line, match)) {
// Header entry for columns.
columns = std::clamp(std::stoi(match.fetch(1)), 1, 1000);
} else if (regex_blank->match(line, match)) {
// Comment or blank line.
} else {
// Unrecognised.
throw std::runtime_error("Invalid line " + std::string(line));
}
}
}
Inkscape::UI::Dialog::GlobalPalettes::GlobalPalettes()
{
// Load the palettes.
for (auto &path : Inkscape::IO::Resource::get_filenames(Inkscape::IO::Resource::PALETTES, {".gpl"})) {
try {
palettes.emplace_back(path);
} catch (std::runtime_error const &e) {
g_warning("Error loading palette %s: %s", path.c_str(), e.what());
} catch (std::logic_error const &e) {
g_warning("Error loading palette %s: %s", path.c_str(), e.what());
}
}
std::sort(palettes.begin(), palettes.end(), [] (decltype(palettes)::const_reference a, decltype(palettes)::const_reference b) {
// Sort by user/system first...
if (a.user > b.user) return true;
if (b.user > a.user) return false;
// ... then by name.
return a.name.compare(b.name) < 0;
});
}
Inkscape::UI::Dialog::GlobalPalettes const &Inkscape::UI::Dialog::GlobalPalettes::get()
{
static GlobalPalettes instance;
return instance;
}
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