Mercurial > repos > blastem
view util.c @ 2237:f82c090c1e89
Implement MMAP_ONLY_ODD/EVEN in combination with MMAP_PTR_IDX. Fixes games that have SRAM when a system with TMSS is selected
author | Michael Pavone <pavone@retrodev.com> |
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date | Sat, 17 Sep 2022 15:38:40 -0700 |
parents | a8af8d898a7c |
children | 1a3991ada927 |
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#include <string.h> #include <stdlib.h> #include <stdio.h> #include <ctype.h> #include <stdint.h> #include <stdarg.h> #include <sys/types.h> #include <sys/stat.h> #include <errno.h> #ifdef __ANDROID__ #include <android/log.h> #define info_puts(msg) __android_log_write(ANDROID_LOG_INFO, "BlastEm", msg) #define warning_puts(msg) __android_log_write(ANDROID_LOG_WARN, "BlastEm", msg) #define fatal_puts(msg) __android_log_write(ANDROID_LOG_FATAL, "BlastEm", msg) #define info_printf(msg, args) __android_log_vprint(ANDROID_LOG_INFO, "BlastEm", msg, args) #define warning_printf(msg, args) __android_log_vprint(ANDROID_LOG_WARN, "BlastEm", msg, args) #define fatal_printf(msg, args) __android_log_vprint(ANDROID_LOG_FATAL, "BlastEm", msg, args) #else #define info_puts(msg) fputs(msg, stdout); #define warning_puts(msg) fputs(msg, stderr); #define fatal_puts(msg) fputs(msg, stderr); #define info_printf(msg, args) vprintf(msg, args) #define warning_printf(msg, args) vfprintf(stderr, msg, args) #define fatal_printf(msg, args) vfprintf(stderr, msg, args) #endif #include "util.h" void render_errorbox(char *title, char *message); void render_warnbox(char *title, char *message); void render_infobox(char *title, char *message); extern int headless; char * alloc_concat(char const * first, char const * second) { int flen = strlen(first); int slen = strlen(second); char * ret = malloc(flen + slen + 1); memcpy(ret, first, flen); memcpy(ret+flen, second, slen+1); return ret; } char * alloc_concat_m(int num_parts, char const ** parts) { int total = 0; for (int i = 0; i < num_parts; i++) { total += strlen(parts[i]); } char * ret = malloc(total + 1); *ret = 0; for (int i = 0; i < num_parts; i++) { strcat(ret, parts[i]); } return ret; } char * alloc_join(int num_parts, char const **parts, char sep) { int total = num_parts ? num_parts - 1 : 0; for (int i = 0; i < num_parts; i++) { total += strlen(parts[i]); } char * ret = malloc(total + 1); char *cur = ret; for (int i = 0; i < num_parts; i++) { size_t s = strlen(parts[i]); if (i) { *(cur++) = sep; } memcpy(cur, parts[i], s); cur += s; } *cur = 0; return ret; } typedef struct { uint32_t start; uint32_t end; char *value; } var_pos; char *replace_vars(char *base, tern_node *vars, uint8_t allow_env) { uint32_t num_vars = 0; for (char *cur = base; *cur; ++cur) { //TODO: Support escaping $ and allow brace syntax if (*cur == '$') { num_vars++; } } var_pos *positions = calloc(num_vars, sizeof(var_pos)); num_vars = 0; uint8_t in_var = 0; uint32_t max_var_len = 0; for (char *cur = base; *cur; ++cur) { if (in_var) { if (!isalnum(*cur)) { positions[num_vars].end = cur-base; if (positions[num_vars].end - positions[num_vars].start > max_var_len) { max_var_len = positions[num_vars].end - positions[num_vars].start; } num_vars++; in_var = 0; } } else if (*cur == '$') { positions[num_vars].start = cur-base+1; in_var = 1; } } if (in_var) { positions[num_vars].end = strlen(base); if (positions[num_vars].end - positions[num_vars].start > max_var_len) { max_var_len = positions[num_vars].end - positions[num_vars].start; } num_vars++; } char *varname = malloc(max_var_len+1); uint32_t total_len = 0; uint32_t cur = 0; for (uint32_t i = 0; i < num_vars; i++) { total_len += (positions[i].start - 1) - cur; cur = positions[i].start; memcpy(varname, base + positions[i].start, positions[i].end-positions[i].start); varname[positions[i].end-positions[i].start] = 0; positions[i].value = tern_find_ptr(vars, varname); if (!positions[i].value && allow_env) { positions[i].value = getenv(varname); } if (positions[i].value) { total_len += strlen(positions[i].value); } } total_len += strlen(base+cur); free(varname); char *output = malloc(total_len+1); cur = 0; char *curout = output; for (uint32_t i = 0; i < num_vars; i++) { if (positions[i].start-1 > cur) { memcpy(curout, base + cur, (positions[i].start-1) - cur); curout += (positions[i].start-1) - cur; } if (positions[i].value) { strcpy(curout, positions[i].value); curout += strlen(curout); } cur = positions[i].end; }; if (base[cur]) { strcpy(curout, base+cur); } else { *curout = 0; } free(positions); return output; } void byteswap_rom(int filesize, uint16_t *cart) { for(uint16_t *cur = cart; cur - cart < filesize/2; ++cur) { *cur = (*cur >> 8) | (*cur << 8); } } long file_size(FILE * f) { fseek(f, 0, SEEK_END); long fsize = ftell(f); fseek(f, 0, SEEK_SET); return fsize; } char * strip_ws(char * text) { while (*text && (!isprint(*text) || isblank(*text))) { text++; } char * ret = text; text = ret + strlen(ret) - 1; while (text > ret && (!isprint(*text) || isblank(*text))) { *text = 0; text--; } return ret; } char * split_keyval(char * text) { while (*text && !isblank(*text)) { text++; } if (!*text) { return text; } *text = 0; return text+1; } uint8_t startswith(const char *haystack, const char *prefix) { return !strncmp(haystack, prefix, strlen(prefix)); } void bin_to_hex(uint8_t *output, uint8_t *input, uint64_t size) { while (size) { uint8_t digit = *input >> 4; digit += digit > 9 ? 'a' - 0xa : '0'; *(output++) = digit; digit = *(input++) & 0xF; digit += digit > 9 ? 'a' - 0xa : '0'; *(output++) = digit; size--; } *(output++) = 0; } char *utf16be_to_utf8(uint8_t *buf, uint32_t max_size) { uint8_t *cur = buf; uint32_t converted_size = 0; for (uint32_t i = 0; i < max_size; i++, cur+=2) { uint16_t code = *cur << 16 | cur[1]; if (!code) { break; } if (code < 0x80) { converted_size++; } else if (code < 0x800) { converted_size += 2; } else { //TODO: Deal with surrogate pairs converted_size += 3; } } char *out = malloc(converted_size + 1); char *cur_out = out; cur = buf; for (uint32_t i = 0; i < max_size; i++, cur+=2) { uint16_t code = *cur << 16 | cur[1]; if (!code) { break; } if (code < 0x80) { *(cur_out++) = code; } else if (code < 0x800) { *(cur_out++) = 0xC0 | code >> 6; *(cur_out++) = 0x80 | (code & 0x3F); } else { //TODO: Deal with surrogate pairs *(cur_out++) = 0xF0 | code >> 12; *(cur_out++) = 0x80 | (code >> 6 & 0x3F); *(cur_out++) = 0x80 | (code & 0x3F); } } *cur_out = 0; return out; } int utf8_codepoint(const char **text) { uint8_t initial = **text; (*text)++; if (initial < 0x80) { return initial; } int base = 0; uint8_t extended_bytes = 0; if ((initial & 0xE0) == 0xC0) { base = 0x80; initial &= 0x1F; extended_bytes = 1; } else if ((initial & 0xF0) == 0xE0) { base = 0x800; initial &= 0xF; extended_bytes = 2; } else if ((initial & 0xF8) == 0xF0) { base = 0x10000; initial &= 0x7; extended_bytes = 3; } int value = initial; for (uint8_t i = 0; i < extended_bytes; i++) { if ((**text & 0xC0) != 0x80) { return -1; } value = value << 6; value |= (**text) & 0x3F; (*text)++; } return value + base; } char is_path_sep(char c) { #ifdef _WIN32 if (c == '\\') { return 1; } #endif return c == '/'; } char is_absolute_path(char *path) { #ifdef _WIN32 if (path[1] == ':' && is_path_sep(path[2]) && isalpha(path[0])) { return 1; } #endif return is_path_sep(path[0]); } char * basename_no_extension(const char *path) { const char *lastdot = NULL; const char *lastslash = NULL; const char *cur; for (cur = path; *cur; cur++) { if (*cur == '.') { lastdot = cur; } else if (is_path_sep(*cur)) { lastslash = cur + 1; } } if (!lastdot) { lastdot = cur; } if (!lastslash) { lastslash = path; } char *barename = malloc(lastdot-lastslash+1); memcpy(barename, lastslash, lastdot-lastslash); barename[lastdot-lastslash] = 0; return barename; } char *path_extension(char const *path) { char const *lastdot = NULL; char const *lastslash = NULL; char const *cur; for (cur = path; *cur; cur++) { if (*cur == '.') { lastdot = cur; } else if (is_path_sep(*cur)) { lastslash = cur + 1; } } if (!lastdot || (lastslash && lastslash > lastdot)) { //no extension return NULL; } return strdup(lastdot+1); } uint8_t path_matches_extensions(char *path, const char **ext_list, uint32_t num_exts) { char *ext = path_extension(path); if (!ext) { return 0; } uint32_t extidx; for (extidx = 0; extidx < num_exts; extidx++) { if (!strcasecmp(ext, ext_list[extidx])) { free(ext); return 1; } } free(ext); return 0; } char * path_dirname(const char *path) { const char *lastslash = NULL; const char *cur; for (cur = path; *cur; cur++) { if (is_path_sep(*cur)) { lastslash = cur; } } if (!lastslash) { return NULL; } char *dir = malloc(lastslash-path+1); memcpy(dir, path, lastslash-path); dir[lastslash-path] = 0; return dir; } uint32_t nearest_pow2(uint32_t val) { uint32_t ret = 1; while (ret < val) { ret = ret << 1; } return ret; } static char * exe_str; void set_exe_str(char * str) { exe_str = str; } void fatal_error(char *format, ...) { va_list args; va_start(args, format); if (!headless) { //take a guess at the final size int32_t size = strlen(format) * 2; char *buf = malloc(size); int32_t actual = vsnprintf(buf, size, format, args); if (actual >= size || actual < 0) { if (actual < 0) { //seems on windows, vsnprintf is returning -1 when the buffer is too small //since we don't know the proper size, a generous multiplier will hopefully suffice actual = size * 4; } else { actual++; } free(buf); buf = malloc(actual); va_end(args); va_start(args, format); vsnprintf(buf, actual, format, args); } fatal_puts(buf); render_errorbox("Fatal Error", buf); free(buf); } else { fatal_printf(format, args); } va_end(args); exit(1); } #ifndef _WIN32 #include <unistd.h> #endif void warning(char *format, ...) { va_list args; va_start(args, format); #ifndef _WIN32 if (headless || (isatty(STDERR_FILENO) && isatty(STDIN_FILENO))) { warning_printf(format, args); } else { #endif int32_t size = strlen(format) * 2; char *buf = malloc(size); int32_t actual = vsnprintf(buf, size, format, args); if (actual >= size || actual < 0) { if (actual < 0) { //seems on windows, vsnprintf is returning -1 when the buffer is too small //since we don't know the proper size, a generous multiplier will hopefully suffice actual = size * 4; } else { actual++; } free(buf); buf = malloc(actual); va_end(args); va_start(args, format); vsnprintf(buf, actual, format, args); } warning_puts(buf); render_infobox("BlastEm Info", buf); free(buf); #ifndef _WIN32 } #endif va_end(args); } static uint8_t output_enabled = 1; void info_message(char *format, ...) { va_list args; va_start(args, format); #ifndef _WIN32 if (headless || (isatty(STDOUT_FILENO) && isatty(STDIN_FILENO))) { if (output_enabled) { info_printf(format, args); } } else { #endif int32_t size = strlen(format) * 2; char *buf = malloc(size); int32_t actual = vsnprintf(buf, size, format, args); if (actual >= size || actual < 0) { if (actual < 0) { //seems on windows, vsnprintf is returning -1 when the buffer is too small //since we don't know the proper size, a generous multiplier will hopefully suffice actual = size * 4; } else { actual++; } free(buf); buf = malloc(actual); va_end(args); va_start(args, format); vsnprintf(buf, actual, format, args); } if (output_enabled) { info_puts(buf); } render_infobox("BlastEm Info", buf); free(buf); #ifndef _WIN32 } #endif va_end(args); } void debug_message(char *format, ...) { va_list args; va_start(args, format); if (output_enabled) { info_printf(format, args); } } void disable_stdout_messages(void) { output_enabled = 0; } uint8_t is_stdout_enabled(void) { return output_enabled; } #ifdef _WIN32 #define WINVER 0x501 #include <winsock2.h> #include <windows.h> #include <shlobj.h> char * get_home_dir() { static char path[MAX_PATH]; SHGetFolderPathA(NULL, CSIDL_PROFILE, NULL, 0, path); return path; } char * get_exe_dir() { static char path[MAX_PATH]; HMODULE module = GetModuleHandleA(NULL); GetModuleFileNameA(module, path, MAX_PATH); int pathsize = strlen(path); for(char * cur = path + pathsize - 1; cur != path; cur--) { if (*cur == '\\') { *cur = 0; break; } } return path; } dir_entry *get_dir_list(char *path, size_t *numret) { dir_entry *ret; if (path[0] == PATH_SEP[0] && !path[1]) { int drives = GetLogicalDrives(); size_t count = 0; for (int i = 0; i < 26; i++) { if (drives & (1 << i)) { count++; } } ret = calloc(count, sizeof(dir_entry)); dir_entry *cur = ret; for (int i = 0; i < 26; i++) { if (drives & (1 << i)) { cur->name = malloc(4); cur->name[0] = 'A' + i; cur->name[1] = ':'; cur->name[2] = PATH_SEP[0]; cur->name[3] = 0; cur->is_dir = 1; cur++; } } if (numret) { *numret = count; } } else { HANDLE dir; WIN32_FIND_DATA file; char *pattern = alloc_concat(path, "/*.*"); dir = FindFirstFile(pattern, &file); free(pattern); if (dir == INVALID_HANDLE_VALUE) { if (numret) { *numret = 0; } return NULL; } size_t storage = 64; ret = malloc(sizeof(dir_entry) * storage); size_t pos = 0; if (path[1] == ':' && (!path[2] || (path[2] == PATH_SEP[0] && !path[3]))) { //we are in the root of a drive, add a virtual .. entry //for navigating to the virtual root directory ret[pos].name = strdup(".."); ret[pos++].is_dir = 1; } do { if (pos == storage) { storage = storage * 2; ret = realloc(ret, sizeof(dir_entry) * storage); } ret[pos].name = strdup(file.cFileName); ret[pos++].is_dir = (file.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) != 0; } while (FindNextFile(dir, &file)); FindClose(dir); if (numret) { *numret = pos; } } return ret; } time_t get_modification_time(char *path) { HANDLE results; WIN32_FIND_DATA file; results = FindFirstFile(path, &file); if (results == INVALID_HANDLE_VALUE) { return 0; } FindClose(results); uint64_t wintime = ((uint64_t)file.ftLastWriteTime.dwHighDateTime) << 32 | file.ftLastWriteTime.dwLowDateTime; //convert to seconds wintime /= 10000000; //adjust for difference between Windows and Unix Epoch wintime -= 11644473600LL; return (time_t)wintime; } int ensure_dir_exists(const char *path) { if (CreateDirectory(path, NULL)) { return 1; } if (GetLastError() == ERROR_ALREADY_EXISTS) { return 1; } if (GetLastError() != ERROR_PATH_NOT_FOUND) { warning("CreateDirectory failed with unexpected error code %X\n", GetLastError()); return 0; } char *parent = strdup(path); //Windows technically supports both native and Unix-style path separators //so search for both char *sep = strrchr(parent, '\\'); char *osep = strrchr(parent, '/'); if (osep && (!sep || osep > sep)) { sep = osep; } if (!sep || sep == parent) { //relative path, but for some reason we failed return 0; } *sep = 0; if (!ensure_dir_exists(parent)) { free(parent); return 0; } free(parent); return CreateDirectory(path, NULL); } static WSADATA wsa_data; static void socket_cleanup(void) { WSACleanup(); } void socket_init(void) { static uint8_t started; if (!started) { started = 1; WSAStartup(MAKEWORD(2,2), &wsa_data); atexit(socket_cleanup); } } int socket_blocking(int sock, int should_block) { u_long param = !should_block; if (ioctlsocket(sock, FIONBIO, ¶m)) { return WSAGetLastError(); } return 0; } void socket_close(int sock) { closesocket(sock); } int socket_last_error(void) { return WSAGetLastError(); } int socket_error_is_wouldblock(void) { return WSAGetLastError() == WSAEWOULDBLOCK; } #else #include <fcntl.h> #include <signal.h> void socket_init(void) { //SIGPIPE on network sockets is not desired //would be better to do this in a more limited way, //but the alternatives are not portable signal(SIGPIPE, SIG_IGN); } int socket_blocking(int sock, int should_block) { if (fcntl(sock, F_SETFL, should_block ? 0 : O_NONBLOCK)) { return errno; } return 0; } void socket_close(int sock) { close(sock); } int socket_last_error(void) { return errno; } int socket_error_is_wouldblock(void) { return errno == EAGAIN || errno == EWOULDBLOCK; } char * get_home_dir() { return getenv("HOME"); } char * readlink_alloc(char * path) { char * linktext = NULL; ssize_t linksize = 512; ssize_t cursize = 0; do { if (linksize > cursize) { cursize = linksize; if (linktext) { free(linktext); } } linktext = malloc(cursize); linksize = readlink(path, linktext, cursize-1); if (linksize == -1) { perror("readlink"); free(linktext); return NULL; } } while ((linksize+1) > cursize); linktext[linksize] = 0; return linktext; } char * get_exe_dir() { static char * exe_dir; if (!exe_dir) { char * cur; #ifdef HAS_PROC char * linktext = readlink_alloc("/proc/self/exe"); if (!linktext) { goto fallback; } int linksize = strlen(linktext); for(cur = linktext + linksize - 1; cur != linktext; cur--) { if (is_path_sep(*cur)) { *cur = 0; break; } } if (cur == linktext) { free(linktext); fallback: #endif if (!exe_str) { fputs("/proc/self/exe is not available and set_exe_str was not called!", stderr); } int pathsize = strlen(exe_str); for(cur = exe_str + pathsize - 1; cur != exe_str; cur--) { if (is_path_sep(*cur)) { exe_dir = malloc(cur-exe_str+1); memcpy(exe_dir, exe_str, cur-exe_str); exe_dir[cur-exe_str] = 0; break; } } #ifdef HAS_PROC } else { exe_dir = linktext; } #endif } return exe_dir; } #include <dirent.h> dir_entry *get_dir_list(char *path, size_t *numret) { DIR *d = opendir(path); if (!d) { if (numret) { *numret = 0; } return NULL; } size_t storage = 64; dir_entry *ret = malloc(sizeof(dir_entry) * storage); size_t pos = 0; struct dirent* entry; while (entry = readdir(d)) { if (entry->d_type != DT_REG && entry->d_type != DT_LNK && entry->d_type != DT_DIR) { continue; } if (pos == storage) { storage = storage * 2; ret = realloc(ret, sizeof(dir_entry) * storage); } ret[pos].name = strdup(entry->d_name); ret[pos++].is_dir = entry->d_type == DT_DIR; } if (numret) { *numret = pos; } closedir(d); return ret; } time_t get_modification_time(char *path) { struct stat st; if (stat(path, &st)) { return 0; } #ifdef __APPLE__ return st.st_mtimespec.tv_sec; #else //Android's Bionic doesn't support the new style so we'll use the old one instead return st.st_mtime; #endif } int ensure_dir_exists(const char *path) { struct stat st; if (stat(path, &st)) { if (errno == ENOENT) { char *parent = strdup(path); char *sep = strrchr(parent, '/'); if (sep && sep != parent) { *sep = 0; if (!ensure_dir_exists(parent)) { free(parent); return 0; } free(parent); } return mkdir(path, 0777) == 0; } else { char buf[80]; strerror_r(errno, buf, sizeof(buf)); warning("stat failed with error: %s", buf); return 0; } } return S_ISDIR(st.st_mode); } #endif void free_dir_list(dir_entry *list, size_t numentries) { for (size_t i = 0; i < numentries; i++) { free(list[i].name); } free(list); } static int sort_dir_alpha(const void *a, const void *b) { const dir_entry *da, *db; da = a; db = b; if (da->is_dir != db->is_dir) { return db->is_dir - da->is_dir; } return strcasecmp(((dir_entry *)a)->name, ((dir_entry *)b)->name); } void sort_dir_list(dir_entry *list, size_t num_entries) { qsort(list, num_entries, sizeof(dir_entry), sort_dir_alpha); } uint8_t delete_file(char *path) { #ifdef _WIN32 //TODO: Call Unicode version and prepend special string to remove max path limitation return 0 != DeleteFileA(path); #else return 0 == unlink(path); #endif } #ifdef __ANDROID__ #include <SDL.h> #ifndef IS_LIB char *read_bundled_file(char *name, uint32_t *sizeret) { SDL_RWops *rw = SDL_RWFromFile(name, "rb"); if (!rw) { if (sizeret) { *sizeret = -1; } return NULL; } long fsize = rw->size(rw); if (sizeret) { *sizeret = fsize; } char *ret; if (fsize) { ret = malloc(fsize); if (SDL_RWread(rw, ret, 1, fsize) != fsize) { free(ret); ret = NULL; } } else { ret = NULL; } SDL_RWclose(rw); return ret; } #endif char const *get_config_dir() { return SDL_AndroidGetInternalStoragePath(); } char const *get_userdata_dir() { return SDL_AndroidGetInternalStoragePath(); } #else #ifndef IS_LIB char *read_bundled_file(char *name, uint32_t *sizeret) { #ifdef DATA_PATH char *data_dir = DATA_PATH; #else char *data_dir = get_exe_dir(); if (!data_dir) { if (sizeret) { *sizeret = -1; } return NULL; } #endif char const *pieces[] = {data_dir, PATH_SEP, name}; char *path = alloc_concat_m(3, pieces); FILE *f = fopen(path, "rb"); free(path); if (!f) { if (sizeret) { *sizeret = -1; } return NULL; } long fsize = file_size(f); if (sizeret) { *sizeret = fsize; } char *ret; if (fsize) { //reserve an extra byte in case caller wants //to null terminate the data ret = malloc(fsize+1); if (fread(ret, 1, fsize, f) != fsize) { free(ret); ret = NULL; } } else { ret = NULL; } fclose(f); return ret; } #endif //ISLIB #ifdef _WIN32 char const *get_userdata_dir() { static char path[MAX_PATH]; if (S_OK == SHGetFolderPath(NULL, CSIDL_LOCAL_APPDATA | CSIDL_FLAG_CREATE, NULL, 0, path)) { return path; } return NULL; } char const *get_config_dir() { static char* confdir; if (!confdir) { char const *base = get_userdata_dir(); if (base) { confdir = alloc_concat(base, PATH_SEP "blastem"); } } return confdir; } #define CONFIG_PREFIX "" #define SAVE_PREFIX "" #else #define CONFIG_PREFIX "/.config" #define USERDATA_SUFFIX "/.local/share" char const *get_config_dir() { static char* confdir; if (!confdir) { char const *base = get_home_dir(); if (base) { confdir = alloc_concat(base, CONFIG_PREFIX PATH_SEP "blastem"); } } return confdir; } char const *get_userdata_dir() { static char* savedir; if (!savedir) { char const *base = get_home_dir(); if (base) { savedir = alloc_concat(base, USERDATA_SUFFIX); } } return savedir; } #endif //_WIN32 #endif //__ANDROID__