313 lines
6.2 KiB
C++
313 lines
6.2 KiB
C++
/*
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This file is part of Warzone 2100.
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Copyright (C) 1999-2004 Eidos Interactive
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Copyright (C) 2005-2011 Warzone 2100 Project
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Warzone 2100 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 2 of the License, or
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(at your option) any later version.
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Warzone 2100 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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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// Config.c saves your favourite options to the Registry.
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#include "frame.h"
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#include "configfile.h"
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#include <string>
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#include <string.h>
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#include "string_ext.h"
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#include "file.h"
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#define REGISTRY_HASH_SIZE 32
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struct regkey_t
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{
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char *key;
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char *value;
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regkey_t * next;
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};
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static regkey_t* registry[REGISTRY_HASH_SIZE] = { NULL };
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static char RegFilePath[PATH_MAX];
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void registry_clear()
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(registry); ++i)
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{
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regkey_t* j = registry[i];
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while (j)
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{
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regkey_t* const toDelete = j;
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j = j->next;
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free(toDelete->key);
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free(toDelete->value);
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free(toDelete);
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}
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registry[i] = NULL;
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}
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}
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static unsigned int registry_hash(const char* s)
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{
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unsigned int h = 0;
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while (s && *s)
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h += *s++;
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return h % ARRAY_SIZE(registry);
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}
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static regkey_t* registry_find_key(const char* key)
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{
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regkey_t* i;
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for (i = registry[registry_hash(key)]; i != NULL; i = i->next)
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{
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if (!strcmp(key, i->key))
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{
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return i;
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}
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}
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return NULL;
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}
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static char* registry_get_by_key(const char* key)
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{
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regkey_t* regkey = registry_find_key(key);
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if (regkey == NULL)
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{
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#if 0
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debug(LOG_NEVER, "Key \"%s\" not found", key);
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#endif
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return NULL;
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}
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else
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{
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#if 0
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debug(LOG_NEVER, "Key \"%s\" has value \"%s\"", key, regkey->value);
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#endif
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return regkey->value;
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}
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}
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static void registry_set_key(const char* key, const char* value)
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{
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regkey_t* regkey = registry_find_key(key);
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#if 0
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debug(LOG_NEVER, "Set key \"%s\" to value \"%s\"", key, value);
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#endif
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if (regkey == NULL)
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{
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// Add a new bucked to the hashtable for the given key
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const unsigned int h = registry_hash(key);
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regkey = (regkey_t *)malloc(sizeof(*regkey));
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regkey->key = strdup(key);
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regkey->next = registry[h];
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registry[h] = regkey;
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}
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else
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{
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free(regkey->value);
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}
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regkey->value = strdup(value);
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}
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static void configUnescape(std::string &w, char *begin, char *end)
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{
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w.clear();
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while (begin != end)
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{
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uint8_t ch = *begin++;
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if (ch == '\\')
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{
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int n;
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ch = 0;
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for (n = 0; n < 3 && begin != end; ++n)
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{
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ch *= 8;
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ch += *begin++ - '0';
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}
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}
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w += char(ch);
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}
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}
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static void configEscape(std::string &w, char *begin, char *end)
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{
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w.clear();
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while (begin != end)
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{
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uint8_t ch = *begin++;
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if (ch == '\\' || ch == '=' || ch < ' ')
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{
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w += '\\';
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w += char('0' + ch/64);
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w += char('0' + ch/8%8);
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w += char('0' + ch%8);
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continue;
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}
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w += char(ch);
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}
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}
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static bool registry_load(const char* filename)
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{
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char *bufBegin = NULL, *bufEnd;
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char *lineEnd;
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UDWORD filesize;
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debug(LOG_WZ, "Loading the registry from [directory: %s] %s", PHYSFS_getRealDir(filename), filename);
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if (PHYSFS_exists(filename)) {
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if (!loadFile(filename, &bufBegin, &filesize))
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{
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return false; // happens only in NDEBUG case
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}
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} else {
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// Registry does not exist. Caller will write a new one.
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return false;
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}
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debug(LOG_WZ, "Parsing the registry from [directory: %s] %s", PHYSFS_getRealDir(filename) , filename);
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if (filesize == 0)
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{
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debug(LOG_WARNING, "Registry file %s is empty!", filename);
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free(bufBegin);
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return false;
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}
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std::string key, value;
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bufEnd = bufBegin + filesize;
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lineEnd = bufBegin;
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while (lineEnd != bufEnd)
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{
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char *lineBegin = lineEnd, *split;
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for (lineEnd = lineBegin; lineEnd != bufEnd && (uint8_t)*lineEnd != '\n'; ++lineEnd)
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{}
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for (split = lineBegin; split != lineEnd && (uint8_t)*split != '='; ++split)
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{}
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if (lineBegin != split && split != lineEnd) // Key may not be empty, but value may be.
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{
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configUnescape(key, lineBegin, split);
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configUnescape(value, split + 1, lineEnd);
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registry_set_key(key.c_str(), value.c_str());
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}
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if (lineEnd != bufEnd)
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{
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++lineEnd;
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}
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}
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free(bufBegin);
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return true;
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}
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static bool registry_save(const char* filename)
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{
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std::string buffer;
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unsigned int i;
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std::string key, value;
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debug(LOG_WZ, "Saving the registry to [directory: %s] %s", PHYSFS_getRealDir(filename), filename);
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for (i = 0; i < ARRAY_SIZE(registry); ++i)
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{
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regkey_t *j;
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for (j = registry[i]; j != NULL; j = j->next)
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{
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configEscape(key, j->key, j->key + strlen(j->key));
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configEscape(value, j->value, j->value + strlen(j->value));
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buffer += key;
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buffer += '=';
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buffer += value;
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buffer += '\n';
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}
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}
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return saveFile(filename, buffer.c_str(), buffer.size());
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}
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void setRegistryFilePath(const char* fileName)
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{
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sstrcpy(RegFilePath, fileName);
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}
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bool openWarzoneKey()
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{
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static bool done = false;
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if (done == false)
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{
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done = registry_load(RegFilePath);
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}
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return true;
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}
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bool closeWarzoneKey()
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{
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return registry_save(RegFilePath);
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}
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/**
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* Read config setting \c key into val
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* \param *key Config setting
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* \param *val Place where to store the setting
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* \return Whether we succeed to find the setting
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*/
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bool getWarzoneKeyNumeric(const char* key, int* val)
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{
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const char* const value = registry_get_by_key(key);
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return (value != NULL
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&& sscanf(value, "%i", val) == 1);
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}
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bool getWarzoneKeyString(const char* key, char* val)
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{
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const char* const value = registry_get_by_key(key);
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if (value == NULL)
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{
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return false;
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}
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strcpy(val, value);
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return true;
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}
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bool setWarzoneKeyNumeric(const char* key, int val)
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{
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char* numBuf;
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sasprintf(&numBuf, "%i", val);
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registry_set_key(key, numBuf);
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return true;
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}
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bool setWarzoneKeyString(const char* key, const char* val)
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{
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registry_set_key(key, val);
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return true;
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}
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