mirror of
https://github.com/mauiaaron/apple2.git
synced 2024-06-26 00:29:27 +00:00
db816ad502
- Eliminates a whole bunch of boilerplate setter/getter code in various places
- Accesses preferences directly from JSON data through custom json_parse.h API
- Improves code locality for Java menus/settings
493 lines
12 KiB
C
493 lines
12 KiB
C
/*
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* Apple // emulator for *ix
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*
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* This software package is subject to the GNU General Public License
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* version 3 or later (your choice) as published by the Free Software
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* Foundation.
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*
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* Copyright 1994 Alexander Jean-Claude Bottema
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* Copyright 1995 Stephen Lee
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* Copyright 1997, 1998 Aaron Culliney
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* Copyright 1998, 1999, 2000 Michael Deutschmann
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* Copyright 2013-2015 Aaron Culliney
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*
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*/
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#include "prefs.h"
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#include "json_parse_private.h"
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typedef struct prefs_listener_s {
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prefs_change_callback_f prefsChanged;
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struct prefs_listener_s *nextListener;
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} prefs_listener_s;
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typedef struct prefs_domain_s {
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char *domain;
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struct prefs_listener_s *listeners;
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struct prefs_domain_s *nextDomain;
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} prefs_domain_s;
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static JSON_ref jsonPrefs = NULL;
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static prefs_domain_s *domains = NULL;
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static char *prefsFile = NULL;
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static unsigned long listenerCount = 0;
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static pthread_mutex_t prefsLock = PTHREAD_MUTEX_INITIALIZER;
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// ----------------------------------------------------------------------------
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void prefs_load(void) {
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pthread_mutex_lock(&prefsLock);
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FREE(prefsFile);
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const char *apple2JSON = getenv("APPLE2IX_JSON");
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if (apple2JSON) {
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ASPRINTF(&prefsFile, "%s", apple2JSON);
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}
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if (!prefsFile) {
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#ifdef ANDROID
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ASPRINTF(&prefsFile, "%s/.apple2.json", data_dir);
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#else
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ASPRINTF(&prefsFile, "%s/.apple2.json", getenv("HOME"));
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#endif
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}
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assert(prefsFile);
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json_destroy(&jsonPrefs);
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int tokCount = json_createFromFile(prefsFile, &jsonPrefs);
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if (tokCount < 0) {
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tokCount = json_createFromString("{}", &jsonPrefs);
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assert(tokCount > 0);
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}
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pthread_mutex_unlock(&prefsLock);
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}
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void prefs_loadString(const char *jsonString) {
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pthread_mutex_lock(&prefsLock);
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json_destroy(&jsonPrefs);
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int tokCount = json_createFromString(jsonString, &jsonPrefs);
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if (tokCount < 0) {
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tokCount = json_createFromString("{}", &jsonPrefs);
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assert(tokCount > 0);
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}
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pthread_mutex_unlock(&prefsLock);
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}
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bool prefs_save(void) {
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pthread_mutex_lock(&prefsLock);
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int fd = -1;
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bool success = false;
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do {
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if (!prefsFile) {
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ERRLOG("Not saving preferences, no file loaded...");
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break;
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}
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if (!jsonPrefs) {
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ERRLOG("Not saving preferences, none loaded...");
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break;
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}
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if (((JSON_s *)jsonPrefs)->numTokens <= 0) {
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ERRLOG("Not saving preferences, no preferences loaded...");
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break;
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}
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assert(((JSON_s *)jsonPrefs)->jsonString && "string should be valid");
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#define PREFS_ERRPRINT() \
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ERRLOG( \
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"Cannot open the .apple2.json preferences file for writing.\n" \
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"Make sure it has R/W permission in your home directory.")
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#define ERROR_SUBMENU_H 8
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#define ERROR_SUBMENU_W 40
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#if defined(INTERFACE_CLASSIC) && !TESTING
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int ch = -1;
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char submenu[ERROR_SUBMENU_H][ERROR_SUBMENU_W+1] =
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//1. 5. 10. 15. 20. 25. 30. 35. 40.
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{ "||||||||||||||||||||||||||||||||||||||||",
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"| |",
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"| |",
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"| OOPS, could not open or write to the |",
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"| .apple2.json preferences file |",
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"| |",
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"| |",
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"||||||||||||||||||||||||||||||||||||||||" };
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#endif
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TEMP_FAILURE_RETRY(fd = open(prefsFile, O_WRONLY|O_CREAT|O_TRUNC, S_IRUSR|S_IWUSR));
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if (fd == -1) {
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PREFS_ERRPRINT();
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#if defined(INTERFACE_CLASSIC) && !TESTING
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c_interface_print_submenu_centered(submenu[0], ERROR_SUBMENU_W, ERROR_SUBMENU_H);
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while ((ch = c_mygetch(1)) == -1) {
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// ...
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}
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#endif
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break;
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}
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success = json_serialize(jsonPrefs, fd, /*pretty:*/true);
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} while (0);
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if (fd != -1) {
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TEMP_FAILURE_RETRY(fsync(fd));
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TEMP_FAILURE_RETRY(close(fd));
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}
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pthread_mutex_unlock(&prefsLock);
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return success;
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}
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bool prefs_copyJSONValue(const char * _NONNULL domain, const char * _NONNULL key, INOUT JSON_ref *jsonVal) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount < 0) {
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break;
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}
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ret = json_mapCopyJSON(jsonRef, key, jsonVal);
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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bool prefs_copyStringValue(const char *domain, const char *key, INOUT char **val) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount < 0) {
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break;
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}
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ret = json_mapCopyStringValue(jsonRef, key, val);
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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bool prefs_parseLongValue(const char *domain, const char *key, INOUT long *val, const long base) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount < 0) {
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break;
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}
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ret = json_mapParseLongValue(jsonRef, key, val, base);
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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bool prefs_parseBoolValue(const char *domain, const char *key, INOUT bool *val) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount < 0) {
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break;
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}
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ret = json_mapParseBoolValue(jsonRef, key, val);
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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bool prefs_parseFloatValue(const char *domain, const char *key, INOUT float *val) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount < 0) {
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break;
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}
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ret = json_mapParseFloatValue(jsonRef, key, val);
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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bool prefs_setStringValue(const char *domain, const char * _NONNULL key, const char * _NONNULL val) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount <= 0) {
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errCount = json_createFromString("{}", &jsonRef);
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assert(errCount > 0);
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assert(jsonRef);
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}
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ret = json_mapSetStringValue(jsonRef, key, val);
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if (!ret) {
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break;
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}
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ret = json_mapSetJSONValue(jsonPrefs, domain, jsonRef);
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if (!ret) {
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break;
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}
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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bool prefs_setLongValue(const char * _NONNULL domain, const char * _NONNULL key, long val) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount <= 0) {
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errCount = json_createFromString("{}", &jsonRef);
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assert(errCount > 0);
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assert(jsonRef);
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}
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ret = json_mapSetLongValue(jsonRef, key, val);
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if (!ret) {
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break;
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}
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ret = json_mapSetJSONValue(jsonPrefs, domain, jsonRef);
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if (!ret) {
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break;
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}
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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bool prefs_setBoolValue(const char * _NONNULL domain, const char * _NONNULL key, bool val) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount <= 0) {
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errCount = json_createFromString("{}", &jsonRef);
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assert(errCount > 0);
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assert(jsonRef);
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}
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ret = json_mapSetBoolValue(jsonRef, key, val);
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if (!ret) {
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break;
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}
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ret = json_mapSetJSONValue(jsonPrefs, domain, jsonRef);
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if (!ret) {
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break;
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}
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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bool prefs_setFloatValue(const char * _NONNULL domain, const char * _NONNULL key, float val) {
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pthread_mutex_lock(&prefsLock);
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bool ret = false;
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JSON_ref jsonRef = NULL;
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do {
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int errCount = json_mapCopyJSON(jsonPrefs, domain, &jsonRef);
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if (errCount <= 0) {
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errCount = json_createFromString("{}", &jsonRef);
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assert(errCount > 0);
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assert(jsonRef);
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}
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ret = json_mapSetFloatValue(jsonRef, key, val);
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if (!ret) {
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break;
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}
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ret = json_mapSetJSONValue(jsonPrefs, domain, jsonRef);
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if (!ret) {
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break;
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}
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} while (0);
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pthread_mutex_unlock(&prefsLock);
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json_destroy(&jsonRef);
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return ret;
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}
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void prefs_registerListener(const char *domain, prefs_change_callback_f callback) {
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pthread_mutex_lock(&prefsLock);
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assert(domain && "listener needs to specify non-NULL domain");
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prefs_domain_s *dom = domains;
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while (dom) {
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if (strcmp(domain, dom->domain) == 0) {
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break;
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}
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dom = dom->nextDomain;
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}
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if (!dom) {
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dom = MALLOC(sizeof(*dom));
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dom->domain = STRDUP(domain);
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dom->nextDomain = domains;
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dom->listeners = NULL;
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domains = dom;
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}
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prefs_listener_s *newL = MALLOC(sizeof(*newL));
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prefs_listener_s *oldL = dom->listeners;
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dom->listeners = newL;
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newL->nextListener = oldL;
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newL->prefsChanged = callback;
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++listenerCount;
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pthread_mutex_unlock(&prefsLock);
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}
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void prefs_sync(const char *domain) {
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static unsigned long syncCount = 0;
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pthread_mutex_lock(&prefsLock);
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++syncCount;
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if (syncCount > 1) {
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pthread_mutex_unlock(&prefsLock);
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return;
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}
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pthread_mutex_unlock(&prefsLock);
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void **alreadySynced = MALLOC(listenerCount * sizeof(void *));
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unsigned long idx = 0;
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prefs_domain_s *dom = domains;
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do {
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while (dom) {
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if (domain && (strcmp(domain, dom->domain) != 0)) {
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dom = dom->nextDomain;
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continue;
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}
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prefs_listener_s *listener = dom->listeners;
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while (listener) {
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bool foundAlready = false;
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for (unsigned long i = 0; i < idx; i++) {
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if (alreadySynced[i] == (void *)listener->prefsChanged) {
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LOG("ignoring already synced listener %p for domain %s", alreadySynced[i], dom->domain);
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foundAlready = true;
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break;
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}
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}
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if (!foundAlready) {
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alreadySynced[idx++] = (void *)listener->prefsChanged;
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assert(idx <= listenerCount);
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listener->prefsChanged(dom->domain);
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}
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listener = listener->nextListener;
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}
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if (domain) {
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break;
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}
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dom = dom->nextDomain;
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}
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pthread_mutex_lock(&prefsLock);
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--syncCount;
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if (syncCount == 0) {
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pthread_mutex_unlock(&prefsLock);
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break;
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}
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pthread_mutex_unlock(&prefsLock);
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} while (1);
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FREE(alreadySynced);
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}
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void prefs_shutdown(bool emulatorShuttingDown) {
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if (!emulatorShuttingDown) {
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return;
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}
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pthread_mutex_lock(&prefsLock);
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FREE(prefsFile);
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prefs_domain_s *dom = domains;
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domains = NULL;
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while (dom) {
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prefs_listener_s *listener = dom->listeners;
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while (listener) {
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prefs_listener_s *dead = listener;
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listener = listener->nextListener;
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FREE(dead);
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}
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prefs_domain_s *dead = dom;
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dom = dom->nextDomain;
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FREE(dead->domain);
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FREE(dead);
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}
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listenerCount = 0;
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pthread_mutex_unlock(&prefsLock);
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}
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