319 lines
10 KiB
C
319 lines
10 KiB
C
/**
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* Copyright 2021 Johannes Marbach
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*
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* This file is part of unl0kr, hereafter referred to as the program.
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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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*/
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#include "config.h"
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#include "log.h"
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#include "lvgl/lvgl.h"
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#include <dirent.h>
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#include <ini.h>
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#include <stdlib.h>
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#include "squeek2lvgl/sq2lv.h"
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/**
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* Static prototypes
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*/
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/**
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* Compares two strings from opaque types.
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*
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* @param a first string as void pointer
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* @param b second string as void pointer
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* @return a positive integer if a > b, a negative integer if a < b and 0 otherwise
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*/
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static int compare_strings(const void* a, const void* b);
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/**
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* Checks whether a string ends with a suffix
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*
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* @param string string to check
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* @param suffix suffix to compare to
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* @return true if the suffix matches at the end of the string, false otherwise
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*/
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static bool string_ends_with(const char *string, const char *suffix);
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/**
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* Non-recursively searches a directory for configuration files.
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*
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* @param path folder to search in
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* @param found pointer to write found configuration file names into (to be freed by the caller)
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* @param num_found pointer to write number of found files into
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*/
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static void find_files(const char *path, char ***found, int *num_found);
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/**
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* Handle parsing events from INIH.
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*
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* @param user_data pointer to user data
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* @param section current section name
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* @param key option key
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* @param value option value
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* @return 0 on error, non-0 otherwise
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*/
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static int parsing_handler(void* user_data, const char* section, const char* key, const char* value);
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/**
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* Attempt to parse a boolean value.
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*
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* @param value string to parse
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* @param result pointer to write result into if parsing is successful
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* @return true on success, false otherwise
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*/
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static bool parse_bool(const char *value, bool *result);
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/**
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* Static functions
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*/
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static int compare_strings(const void* a, const void* b) {
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return strcmp(*(const char**)a, *(const char**)b);
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}
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static bool string_ends_with(const char *string, const char *suffix) {
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if (!string || !suffix || strlen(suffix) > strlen(string)) {
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return false;
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}
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return strncmp(string + strlen(string) - strlen(suffix), suffix, strlen(suffix)) == 0;
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}
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static void find_files(const char *path, char ***found, int *num_found) {
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/* Initialise output variables */
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*found = NULL;
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*num_found = 0;
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/* Count length of directory path */
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const int path_length = strlen(path);
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/* Open directory */
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DIR *d = opendir(path);
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if (!d) {
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ul_log(UL_LOG_LEVEL_WARNING, "Could not read contents of folder %s", path);
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return;
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}
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/* Loop over directory contents */
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struct dirent *dir;
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while ((dir = readdir(d)) != NULL) {
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/* Ignore anything except for .conf files */
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if (dir->d_type != DT_REG || !string_ends_with(dir->d_name, ".conf")) {
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continue;
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}
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/* Grow output array */
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char **tmp = realloc(*found, (*num_found + 1) * sizeof(char *));
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if (!tmp) {
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ul_log(UL_LOG_LEVEL_ERROR, "Could not reallocate memory for configuration file paths");
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break;
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}
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*found = tmp;
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/* Extract file name and length */
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char *name = dir->d_name;
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int name_length = strlen(name);
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/* Allocate memory for full path */
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char *found_path = malloc(path_length + name_length + 2); /* +1 for path separator and null terminator, respectively */
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if (!found_path) {
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ul_log(UL_LOG_LEVEL_ERROR, "Could not allocate memory for configuration file path");
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break;
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}
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/* Build full path */
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memcpy(found_path, path, path_length);
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found_path[path_length] = '/';
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memcpy(found_path + path_length + 1, dir->d_name, name_length + 1); /* +1 for path separator and null terminator, respectively */
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/* Store file path */
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(*found)[*num_found] = found_path;
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*num_found += 1;
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}
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/* Close directory */
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closedir(d);
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}
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static int parsing_handler(void* user_data, const char* section, const char* key, const char* value) {
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ul_config_opts *opts = (ul_config_opts *)user_data;
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if (strcmp(section, "general") == 0) {
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if (strcmp(key, "animations") == 0) {
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if (parse_bool(value, &(opts->general.animations))) {
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return 1;
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}
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} else if (strcmp(key, "backend") == 0) {
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ul_backends_backend_id_t id = ul_backends_find_backend_with_name(value);
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if (id != UL_BACKENDS_BACKEND_NONE) {
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opts->general.backend = id;
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return 1;
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}
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} else if (strcmp(key, "timeout") == 0) {
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/* Use a max ceiling of 60 minutes (3600 secs) */
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opts->general.timeout = (uint16_t)LV_MIN(strtoul(value, (char **)NULL, 10), 3600);
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return 1;
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}
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} else if (strcmp(section, "keyboard") == 0) {
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if (strcmp(key, "autohide") == 0) {
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if (parse_bool(value, &(opts->keyboard.autohide))) {
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return 1;
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}
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} else if (strcmp(key, "layout") == 0) {
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sq2lv_layout_id_t id = sq2lv_find_layout_with_short_name(value);
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if (id != SQ2LV_LAYOUT_NONE) {
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opts->keyboard.layout_id = id;
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return 1;
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}
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} else if (strcmp(key, "popovers") == 0) {
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if (parse_bool(value, &(opts->keyboard.popovers))) {
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return 1;
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}
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}
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} else if (strcmp(section, "textarea") == 0) {
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if (strcmp(key, "obscured") == 0) {
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if (parse_bool(value, &(opts->textarea.obscured))) {
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return 1;
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}
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} else if (strcmp(key, "bullet") == 0) {
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char *bullet = strdup(value);
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if (bullet) {
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opts->textarea.bullet = bullet;
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return 1;
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}
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}
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} else if (strcmp(section, "theme") == 0) {
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if (strcmp(key, "default") == 0) {
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ul_themes_theme_id_t id = ul_themes_find_theme_with_name(value);
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if (id != UL_THEMES_THEME_NONE) {
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opts->theme.default_id = id;
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return 1;
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}
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} else if (strcmp(key, "alternate") == 0) {
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ul_themes_theme_id_t id = ul_themes_find_theme_with_name(value);
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if (id != UL_THEMES_THEME_NONE) {
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opts->theme.alternate_id = id;
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return 1;
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}
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}
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} else if (strcmp(section, "input") == 0) {
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if (strcmp(key, "keyboard") == 0) {
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if (parse_bool(value, &(opts->input.keyboard))) {
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return 1;
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}
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} else if (strcmp(key, "pointer") == 0) {
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if (parse_bool(value, &(opts->input.pointer))) {
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return 1;
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}
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} else if (strcmp(key, "touchscreen") == 0) {
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if (parse_bool(value, &(opts->input.touchscreen))) {
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return 1;
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}
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}
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} else if (strcmp(section, "quirks") == 0) {
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if (strcmp(key, "fbdev_force_refresh") == 0) {
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if (parse_bool(value, &(opts->quirks.fbdev_force_refresh))) {
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return 1;
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}
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} else if (strcmp(key, "terminal_prevent_graphics_mode") == 0) {
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if (parse_bool(value, &(opts->quirks.terminal_prevent_graphics_mode))) {
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return 1;
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}
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} else if (strcmp(key, "terminal_allow_keyboard_input") == 0) {
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if (parse_bool(value, &(opts->quirks.terminal_allow_keyboard_input))) {
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return 1;
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}
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}
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}
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ul_log(UL_LOG_LEVEL_ERROR, "Ignoring invalid config value \"%s\" for key \"%s\" in section \"%s\"", value, key, section);
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return 1; /* Return 1 (true) so that we can use the return value of ini_parse exclusively for file-level errors (e.g. file not found) */
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}
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static bool parse_bool(const char *value, bool *result) {
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if (strcmp(value, "true") == 0) {
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*result = true;
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return true;
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}
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if (strcmp(value, "false") == 0) {
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*result = false;
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return true;
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}
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return false;
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}
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/**
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* Public functions
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*/
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void ul_config_init_opts(ul_config_opts *opts) {
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opts->general.animations = false;
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opts->general.backend = ul_backends_backends[0] == NULL ? UL_BACKENDS_BACKEND_NONE : 0;
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opts->general.timeout = 0;
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opts->keyboard.autohide = true;
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opts->keyboard.layout_id = SQ2LV_LAYOUT_US;
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opts->keyboard.popovers = true;
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opts->textarea.obscured = true;
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opts->textarea.bullet = LV_SYMBOL_BULLET;
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opts->theme.default_id = UL_THEMES_THEME_BREEZY_DARK;
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opts->theme.alternate_id = UL_THEMES_THEME_BREEZY_LIGHT;
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opts->input.keyboard = true;
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opts->input.pointer = true;
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opts->input.touchscreen = true;
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opts->quirks.fbdev_force_refresh = false;
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opts->quirks.terminal_prevent_graphics_mode = false;
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opts->quirks.terminal_allow_keyboard_input = false;
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}
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void ul_config_parse_directory(const char *path, ul_config_opts *opts) {
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/* Find files in directory */
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char **found = NULL;
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int num_found = 0;
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find_files(path, &found, &num_found);
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/* Sort and parse files */
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qsort(found, num_found, sizeof(char *), compare_strings);
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ul_config_parse_files((const char **)found, num_found, opts);
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/* Free memory */
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for (int i = 0; i < num_found; ++i) {
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free(found[i]);
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}
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free(found);
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}
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void ul_config_parse_files(const char **files, int num_files, ul_config_opts *opts) {
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for (int i = 0; i < num_files; ++i) {
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ul_config_parse_file(files[i], opts);
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}
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}
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void ul_config_parse_file(const char *path, ul_config_opts *opts) {
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ul_log(UL_LOG_LEVEL_VERBOSE, "Parsing config file %s", path);
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if (ini_parse(path, parsing_handler, opts) != 0) {
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ul_log(UL_LOG_LEVEL_ERROR, "Ignoring invalid config file %s", path);
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}
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}
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