72 lines
2.1 KiB
C++
72 lines
2.1 KiB
C++
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <string>
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#include <fstream>
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#include "config.h"
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std::string get_config_path() {
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const char* path;
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path = getenv("XDG_CONFIG_HOME");
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if (path) {
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return std::string(path) + "/logmeow/config";
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}
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path = getenv("HOME");
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if (path) {
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return std::string(path) + "/.config/logmeow/config";
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}
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throw std::runtime_error("cannot find suitable config folder, please set XDG_CONFIG_HOME or HOME");
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}
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Config parse_config(FILE* file) {
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size_t line_capacity_size = 128 * sizeof(char);
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char* line = static_cast<char*>(malloc(line_capacity_size));
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if (line == nullptr) {
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throw std::bad_alloc();
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}
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Config config;
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while (true) {
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errno = 0;
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if (getline(&line, &line_capacity_size, file) < 0) {
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int errsv = errno;
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free(line);
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if (errsv == ENOMEM) {
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throw std::bad_alloc();
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} else if (errsv != 0) {
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throw std::system_error(errsv, std::generic_category(), "getline()");
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} else {
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break;
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}
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}
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if (line_capacity_size == 0 || line[0] == '\0' || line[0] == '#') {
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continue;
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}
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if (char* newline = strchr(line, '\n')) {
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*newline = '\0';
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}
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if (strncmp(line, "logcat_command=", 15 * sizeof(char)) == 0) {
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config.logcat_command = &line[16];
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} else {
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std::invalid_argument e = std::invalid_argument(std::string("unknown config line: ") + line);
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free(line);
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throw e;
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}
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}
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return config;
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}
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void write_config(std::ofstream& file, const Config& config) {
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file << "# This is an auto-generated file, comments made will be lost\n"
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<< "# This is a poor man's config file \"format\", there are only three legal lines:\n"
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<< "# # a comment, only available at the start of a line\n"
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<< "# (an empty line, no whitespace)\n"
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<< "# key=value pairs, no spaces around the delimiter, and no unknown keys\n\n"
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<< "logcat_command=" << config.logcat_command;
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}
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