104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
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#include <cstring>
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#include <unistd.h>
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#include "database.h"
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#include "utils.h"
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static std::filesystem::path normalize(std::filesystem::path path);
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static std::optional<std::filesystem::path> relative_path_from(const std::filesystem::path& from, const std::filesystem::path& path);
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void output_meme(const char* path, const char* source, const char* description, const char* miscinfo, int fd, bool edit) {
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auto output = [=](const char* header, const char* contents, bool end = false) {
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write(fd, "# ", 2);
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write(fd, header, strlen(header));
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write(fd, ":\n", 2);
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write(fd, contents, strlen(contents));
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write(fd, "\n", 1);
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if (!end) {
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write(fd, edit ? "\n\0\n" : "\n", edit ? 3 : 1);
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}
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};
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output(edit ? "Path (immutable)" : "Path", path);
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output("Source", source);
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output("Description", description);
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output("Miscellaneous information", miscinfo, true);
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}
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std::vector<std::filesystem::path> get_paths_relative_to_database(const blankie::cliparse::Parser& parser, const Database& db, int* rc, bool needs_exist) {
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std::vector<std::filesystem::path> paths;
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paths.reserve(parser.arguments.size() - 1);
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for (size_t i = 1; i < parser.arguments.size(); i++) {
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std::filesystem::path normalized_path = normalize(parser.arguments[i]);
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std::optional<std::filesystem::path> relative_path = relative_path_from(db.path.parent_path(), normalized_path);
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if (!relative_path) {
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fprintf(stderr, "%s is not in %s\n", normalized_path.c_str(), db.path.parent_path().c_str());
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*rc = 1;
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} else if (needs_exist && !std::filesystem::is_regular_file(normalized_path)) {
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fprintf(stderr, "%s is not a file\n", normalized_path.c_str());
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*rc = 1;
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} else {
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paths.push_back(*relative_path);
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}
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}
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return paths;
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}
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std::filesystem::path get_path_relative_to_database(const char* path, const Database& db) {
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std::filesystem::path normalized_path = normalize(path);
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std::optional<std::filesystem::path> relative_path = relative_path_from(db.path.parent_path(), normalized_path);
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if (!relative_path) {
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fprintf(stderr, "%s is not in %s\n", normalized_path.c_str(), db.path.parent_path().c_str());
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exit(1);
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}
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if (!std::filesystem::is_regular_file(normalized_path)) {
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fprintf(stderr, "%s is not a file\n", normalized_path.c_str());
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exit(1);
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}
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return *relative_path;
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}
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std::filesystem::path normalize(std::filesystem::path path) {
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if (path.is_relative()) {
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path = std::filesystem::current_path() / path;
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}
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std::filesystem::path normalized = path.root_path();
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for (auto it = path.begin(); it != path.end(); it++) {
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if (*it == ".") {
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// do nothing
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} else if (*it == "..") {
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normalized = normalized.parent_path();
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} else {
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normalized /= *it;
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}
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}
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return normalized;
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}
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std::optional<std::filesystem::path> relative_path_from(const std::filesystem::path& from, const std::filesystem::path& path) {
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auto from_it = from.begin();
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auto path_it = path.begin();
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for (; from_it != from.end() && path_it != path.end(); from_it++, path_it++) {
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if (*from_it != *path_it) {
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return std::nullopt;
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}
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}
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if (from_it != from.end()) {
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return std::nullopt;
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}
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std::filesystem::path name;
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for (; path_it != path.end(); path_it++) {
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name /= *path_it;
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}
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return name;
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}
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