mirror of
https://github.com/libretro/RetroArch.git
synced 2024-10-09 07:33:36 +00:00
793 lines
17 KiB
C
793 lines
17 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the 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 along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config_file.h"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <errno.h>
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#include "../compat/strl.h"
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#include "../compat/posix_string.h"
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#include "../msvc/msvc_compat.h"
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#include "../file.h"
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#if !defined(_WIN32) && !defined(__CELLOS_LV2__) && !defined(_XBOX)
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#include <sys/param.h> // PATH_MAX
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#elif defined(_WIN32) && !defined(_XBOX)
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#elif defined(_XBOX)
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#include <xtl.h>
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#endif
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#ifndef PATH_MAX
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#ifdef PATH_MAX
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#define PATH_MAX PATH_MAX
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#else
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#define PATH_MAX 512
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#endif
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#endif
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#define MAX_INCLUDE_DEPTH 16
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struct config_entry_list
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{
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bool readonly; // If we got this from an #include, do not allow write.
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char *key;
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char *value;
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struct config_entry_list *next;
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};
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struct include_list
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{
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char *path;
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struct include_list *next;
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};
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struct config_file
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{
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char *path;
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struct config_entry_list *entries;
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struct config_entry_list *tail;
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unsigned include_depth;
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struct include_list *includes;
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};
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static config_file_t *config_file_new_internal(const char *path, unsigned depth);
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static char *getaline(FILE *file)
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{
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char *newline = (char*)malloc(9);
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size_t cur_size = 8;
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size_t index = 0;
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int in = getc(file);
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while (in != EOF && in != '\n')
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{
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if (index == cur_size)
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{
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cur_size *= 2;
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newline = (char*)realloc(newline, cur_size + 1);
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}
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newline[index++] = in;
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in = getc(file);
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}
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newline[index] = '\0';
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return newline;
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}
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static char *extract_value(char *line, bool is_value)
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{
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if (is_value)
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{
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while (isspace(*line))
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line++;
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// If we don't have an equal sign here, we've got an invalid string...
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if (*line != '=')
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return NULL;
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line++;
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}
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while (isspace(*line))
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line++;
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char *save;
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// We have a full string. Read until next ".
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if (*line == '"')
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{
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line++;
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char *tok = strtok_r(line, "\"", &save);
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if (!tok)
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return NULL;
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return strdup(tok);
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}
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else if (*line == '\0') // Nothing :(
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return NULL;
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else // We don't have that... Read till next space.
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{
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char *tok = strtok_r(line, " \n\t\f\r\v", &save);
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if (tok)
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return strdup(tok);
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else
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return NULL;
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}
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}
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static void set_list_readonly(struct config_entry_list *list)
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{
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while (list)
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{
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list->readonly = true;
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list = list->next;
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}
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}
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// Move semantics? :)
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static void add_child_list(config_file_t *parent, config_file_t *child)
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{
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if (parent->entries)
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{
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struct config_entry_list *head = parent->entries;
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while (head->next)
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head = head->next;
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set_list_readonly(child->entries);
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head->next = child->entries;
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}
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else
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{
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set_list_readonly(child->entries);
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parent->entries = child->entries;
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}
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child->entries = NULL;
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// Rebase tail.
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if (parent->entries)
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{
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struct config_entry_list *head = parent->entries;
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while (head->next)
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head = head->next;
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parent->tail = head;
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}
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else
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parent->tail = NULL;
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}
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static void add_include_list(config_file_t *conf, const char *path)
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{
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struct include_list *head = conf->includes;
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struct include_list *node = (struct include_list*)calloc(1, sizeof(*node));
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node->path = strdup(path);
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if (head)
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{
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while (head->next)
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head = head->next;
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head->next = node;
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}
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else
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conf->includes = node;
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}
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static void add_sub_conf(config_file_t *conf, char *line)
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{
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char *path = extract_value(line, false);
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if (!path)
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return;
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add_include_list(conf, path);
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char real_path[PATH_MAX];
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#ifdef _WIN32
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fill_pathname_resolve_relative(real_path, conf->path, path, sizeof(real_path));
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#else
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#ifndef __CELLOS_LV2__
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if (*path == '~')
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{
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const char *home = getenv("HOME");
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strlcpy(real_path, home ? home : "", sizeof(real_path));
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strlcat(real_path, path + 1, sizeof(real_path));
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}
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else
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#endif
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fill_pathname_resolve_relative(real_path, conf->path, path, sizeof(real_path));
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#endif
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config_file_t *sub_conf = config_file_new_internal(real_path, conf->include_depth + 1);
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if (!sub_conf)
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{
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free(path);
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return;
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}
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// Pilfer internal list. :D
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add_child_list(conf, sub_conf);
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config_file_free(sub_conf);
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free(path);
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}
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static bool parse_line(config_file_t *conf, struct config_entry_list *list, char *line)
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{
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// Remove everything after comment.
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char *comment = strchr(line, '#');
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if (comment)
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*comment = '\0';
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// Starting line with # and include includes config files. :)
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if ((comment == line) && (conf->include_depth < MAX_INCLUDE_DEPTH))
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{
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comment++;
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if (strstr(comment, "include ") == comment)
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{
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add_sub_conf(conf, comment + strlen("include "));
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return false;
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}
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}
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else if (conf->include_depth >= MAX_INCLUDE_DEPTH)
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fprintf(stderr, "!!! #include depth exceeded for config. Might be a cycle.\n");
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// Skips to first character.
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while (isspace(*line))
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line++;
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char *key = (char*)malloc(9);
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size_t cur_size = 8;
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size_t index = 0;
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while (isgraph(*line))
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{
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if (index == cur_size)
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{
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cur_size *= 2;
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key = (char*)realloc(key, cur_size + 1);
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}
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key[index++] = *line++;
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}
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key[index] = '\0';
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list->key = key;
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list->value = extract_value(line, true);
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if (!list->value)
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{
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list->key = NULL;
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free(key);
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return false;
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}
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return true;
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}
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bool config_append_file(config_file_t *conf, const char *path)
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{
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config_file_t *new_conf = config_file_new(path);
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if (!new_conf)
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return false;
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if (new_conf->tail)
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{
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new_conf->tail->next = conf->entries;
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conf->entries = new_conf->entries; // Pilfer.
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new_conf->entries = NULL;
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}
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config_file_free(new_conf);
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return true;
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}
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static config_file_t *config_file_new_internal(const char *path, unsigned depth)
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{
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struct config_file *conf = (struct config_file*)calloc(1, sizeof(*conf));
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if (!conf)
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return NULL;
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if (!path)
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return conf;
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conf->path = strdup(path);
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if (!conf->path)
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{
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free(conf);
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return NULL;
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}
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conf->include_depth = depth;
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FILE *file = fopen(path, "r");
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if (!file)
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{
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free(conf->path);
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free(conf);
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return NULL;
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}
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while (!feof(file))
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{
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struct config_entry_list *list = (struct config_entry_list*)calloc(1, sizeof(*list));
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char *line = getaline(file);
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if (line)
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{
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if (parse_line(conf, list, line))
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{
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if (conf->entries)
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{
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conf->tail->next = list;
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conf->tail = list;
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}
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else
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{
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conf->entries = list;
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conf->tail = list;
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}
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}
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free(line);
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}
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if (list != conf->tail)
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free(list);
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}
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fclose(file);
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return conf;
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}
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config_file_t *config_file_new(const char *path)
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{
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return config_file_new_internal(path, 0);
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}
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void config_file_free(config_file_t *conf)
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{
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if (!conf)
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return;
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struct config_entry_list *tmp = conf->entries;
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while (tmp)
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{
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free(tmp->key);
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free(tmp->value);
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struct config_entry_list *hold = tmp;
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tmp = tmp->next;
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free(hold);
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}
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struct include_list *inc_tmp = conf->includes;
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while (inc_tmp)
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{
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free(inc_tmp->path);
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struct include_list *hold = inc_tmp;
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inc_tmp = inc_tmp->next;
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free(hold);
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}
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free(conf->path);
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free(conf);
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}
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bool config_get_double(config_file_t *conf, const char *key, double *in)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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*in = strtod(list->value, NULL);
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return true;
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}
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list = list->next;
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}
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return false;
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}
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bool config_get_float(config_file_t *conf, const char *key, float *in)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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// strtof() is C99/POSIX. Just use the more portable kind.
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*in = (float)strtod(list->value, NULL);
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return true;
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}
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list = list->next;
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}
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return false;
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}
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bool config_get_int(config_file_t *conf, const char *key, int *in)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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errno = 0;
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int val = strtol(list->value, NULL, 0);
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if (errno == 0)
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{
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*in = val;
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return true;
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}
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else
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return false;
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}
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list = list->next;
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}
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return false;
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}
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bool config_get_uint64(config_file_t *conf, const char *key, uint64_t *in)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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errno = 0;
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uint64_t val = strtoull(list->value, NULL, 0);
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if (errno == 0)
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{
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*in = val;
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return true;
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}
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else
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return false;
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}
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list = list->next;
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}
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return false;
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}
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bool config_get_uint(config_file_t *conf, const char *key, unsigned *in)
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{
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struct config_entry_list *list = conf->entries;
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while (list != NULL)
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{
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if (strcmp(key, list->key) == 0)
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{
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errno = 0;
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unsigned val = strtoul(list->value, NULL, 0);
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if (errno == 0)
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{
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*in = val;
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return true;
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}
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else
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return false;
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}
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list = list->next;
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}
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return false;
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}
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bool config_get_hex(config_file_t *conf, const char *key, unsigned *in)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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errno = 0;
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unsigned val = strtoul(list->value, NULL, 16);
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if (errno == 0)
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{
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*in = val;
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return true;
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}
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else
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return false;
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}
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list = list->next;
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}
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return false;
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}
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bool config_get_char(config_file_t *conf, const char *key, char *in)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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if (list->value[0] && list->value[1])
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return false;
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*in = *list->value;
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return true;
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}
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list = list->next;
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}
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return false;
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}
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bool config_get_string(config_file_t *conf, const char *key, char **str)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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*str = strdup(list->value);
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return true;
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}
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list = list->next;
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}
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return false;
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}
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bool config_get_array(config_file_t *conf, const char *key, char *buf, size_t size)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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return strlcpy(buf, list->value, size) < size;
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list = list->next;
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}
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return false;
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}
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bool config_get_path(config_file_t *conf, const char *key, char *buf, size_t size)
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{
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#if defined(_WIN32) || defined(RARCH_CONSOLE)
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return config_get_array(conf, key, buf, size);
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#else
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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const char *value = list->value;
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if (*value == '~')
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{
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const char *home = getenv("HOME");
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if (home)
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{
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size_t src_size = strlcpy(buf, home, size);
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if (src_size >= size)
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return false;
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buf += src_size;
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size -= src_size;
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value++;
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}
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}
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return strlcpy(buf, value, size) < size;
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}
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list = list->next;
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}
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return false;
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#endif
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}
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bool config_get_bool(config_file_t *conf, const char *key, bool *in)
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{
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struct config_entry_list *list = conf->entries;
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while (list)
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{
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if (strcmp(key, list->key) == 0)
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{
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if (strcasecmp(list->value, "true") == 0)
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*in = true;
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else if (strcasecmp(list->value, "1") == 0)
|
|
*in = true;
|
|
else if (strcasecmp(list->value, "false") == 0)
|
|
*in = false;
|
|
else if (strcasecmp(list->value, "0") == 0)
|
|
*in = false;
|
|
else
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
list = list->next;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void config_set_string(config_file_t *conf, const char *key, const char *val)
|
|
{
|
|
struct config_entry_list *list = conf->entries;
|
|
struct config_entry_list *last = list;
|
|
while (list)
|
|
{
|
|
if (!list->readonly && (strcmp(key, list->key) == 0))
|
|
{
|
|
free(list->value);
|
|
list->value = strdup(val);
|
|
return;
|
|
}
|
|
|
|
last = list;
|
|
list = list->next;
|
|
}
|
|
|
|
struct config_entry_list *elem = (struct config_entry_list*)calloc(1, sizeof(*elem));
|
|
elem->key = strdup(key);
|
|
elem->value = strdup(val);
|
|
|
|
if (last)
|
|
last->next = elem;
|
|
else
|
|
conf->entries = elem;
|
|
}
|
|
|
|
void config_set_double(config_file_t *conf, const char *key, double val)
|
|
{
|
|
char buf[128];
|
|
#ifdef __cplusplus
|
|
snprintf(buf, sizeof(buf), "%f", (float)val);
|
|
#else
|
|
snprintf(buf, sizeof(buf), "%lf", val);
|
|
#endif
|
|
config_set_string(conf, key, buf);
|
|
}
|
|
|
|
void config_set_float(config_file_t *conf, const char *key, float val)
|
|
{
|
|
char buf[128];
|
|
snprintf(buf, sizeof(buf), "%f", val);
|
|
config_set_string(conf, key, buf);
|
|
}
|
|
|
|
void config_set_int(config_file_t *conf, const char *key, int val)
|
|
{
|
|
char buf[128];
|
|
snprintf(buf, sizeof(buf), "%d", val);
|
|
config_set_string(conf, key, buf);
|
|
}
|
|
|
|
void config_set_uint64(config_file_t *conf, const char *key, uint64_t val)
|
|
{
|
|
char buf[128];
|
|
#ifdef _WIN32
|
|
snprintf(buf, sizeof(buf), "%I64u", val);
|
|
#else
|
|
snprintf(buf, sizeof(buf), "%llu", (long long unsigned)val);
|
|
#endif
|
|
config_set_string(conf, key, buf);
|
|
}
|
|
|
|
void config_set_char(config_file_t *conf, const char *key, char val)
|
|
{
|
|
char buf[2];
|
|
snprintf(buf, sizeof(buf), "%c", val);
|
|
config_set_string(conf, key, buf);
|
|
}
|
|
|
|
void config_set_bool(config_file_t *conf, const char *key, bool val)
|
|
{
|
|
config_set_string(conf, key, val ? "true" : "false");
|
|
}
|
|
|
|
bool config_file_write(config_file_t *conf, const char *path)
|
|
{
|
|
FILE *file;
|
|
|
|
if (path)
|
|
{
|
|
file = fopen(path, "w");
|
|
if (!file)
|
|
return false;
|
|
}
|
|
else
|
|
file = stdout;
|
|
|
|
config_file_dump(conf, file);
|
|
|
|
if (path)
|
|
fclose(file);
|
|
|
|
return true;
|
|
}
|
|
|
|
void config_file_dump(config_file_t *conf, FILE *file)
|
|
{
|
|
struct include_list *includes = conf->includes;
|
|
while (includes)
|
|
{
|
|
fprintf(file, "#include \"%s\"\n", includes->path);
|
|
includes = includes->next;
|
|
}
|
|
|
|
struct config_entry_list *list = conf->entries;
|
|
while (list)
|
|
{
|
|
if (!list->readonly)
|
|
fprintf(file, "%s = \"%s\"\n", list->key, list->value);
|
|
list = list->next;
|
|
}
|
|
}
|
|
|
|
void config_file_dump_all(config_file_t *conf, FILE *file)
|
|
{
|
|
struct include_list *includes = conf->includes;
|
|
while (includes)
|
|
{
|
|
fprintf(file, "#include \"%s\"\n", includes->path);
|
|
includes = includes->next;
|
|
}
|
|
|
|
struct config_entry_list *list = conf->entries;
|
|
while (list)
|
|
{
|
|
fprintf(file, "%s = \"%s\" %s\n", list->key, list->value, list->readonly ? "(included)" : "");
|
|
list = list->next;
|
|
}
|
|
}
|
|
|
|
bool config_entry_exists(config_file_t *conf, const char *entry)
|
|
{
|
|
struct config_entry_list *list = conf->entries;
|
|
|
|
while (list)
|
|
{
|
|
if (strcmp(entry, list->key) == 0)
|
|
return true;
|
|
list = list->next;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool config_get_entry_list_head(config_file_t *conf, struct config_file_entry *entry)
|
|
{
|
|
const struct config_entry_list *head = conf->entries;
|
|
if (!head)
|
|
return false;
|
|
|
|
entry->key = head->key;
|
|
entry->value = head->value;
|
|
entry->next = head->next;
|
|
return true;
|
|
}
|
|
|
|
bool config_get_entry_list_next(struct config_file_entry *entry)
|
|
{
|
|
const struct config_entry_list *next = entry->next;
|
|
if (!next)
|
|
return false;
|
|
|
|
entry->key = next->key;
|
|
entry->value = next->value;
|
|
entry->next = next->next;
|
|
return true;
|
|
}
|
|
|