X-Git-Url: https://git.artsoft.org/?a=blobdiff_plain;f=src%2Fmisc.c;h=1ca457c90d8c68abafdced7011cc1cba291efd23;hb=1cacebfb41c20889c904155001a5b88ace962348;hp=c4c0352db9007474e321a03a14b7d68cb8ce1709;hpb=29014045f4de045f8452fdf7ab32622c94b37eef;p=rocksndiamonds.git diff --git a/src/misc.c b/src/misc.c index c4c0352d..1ca457c9 100644 --- a/src/misc.c +++ b/src/misc.c @@ -189,58 +189,196 @@ void MarkTileDirty(int x, int y) } } -void Error(BOOL fatal_error, char *format_str, ...) +void GetOptions(char *argv[]) { - FILE *output_stream = stderr; - va_list ap; - char *format_ptr; - char *s_value; - int i_value; - double d_value; + char **options_left = &argv[1]; - va_start(ap, format_str); /* ap points to first unnamed argument */ + while (*options_left) + { + char option_str[MAX_OPTION_LEN]; + char *option = options_left[0]; + char *next_option = options_left[1]; + char *option_arg = NULL; + int option_len = strlen(option); - fprintf(output_stream, "%s: ", program_name); + strcpy(option_str, option); /* copy argument into buffer */ + option = option_str; - for(format_ptr=format_str; *format_ptr; format_ptr++) - { - if (*format_ptr != '%') + if (strcmp(option, "--") == 0) /* stop scanning arguments */ + break; + + if (option_len >= MAX_OPTION_LEN) + Error(ERR_EXIT_HELP, "unrecognized option '%s'", option); + + if (strncmp(option, "--", 2) == 0) /* treat '--' like '-' */ + option++; + + option_arg = strchr(option, '='); + if (option_arg == NULL) /* no '=' in option */ + option_arg = next_option; + else + { + *option_arg++ = '\0'; /* cut argument from option */ + if (*option_arg == '\0') /* no argument after '=' */ + Error(ERR_EXIT_HELP, "option '%s' has invalid argument", option_str); + } + + option_len = strlen(option); + + if (strcmp(option, "-") == 0) + Error(ERR_EXIT_HELP, "unrecognized option '%s'", option); + else if (strncmp(option, "-help", option_len) == 0) + { + printf("Usage: %s [options] [server.name [port]]\n" + "Options:\n" + " -d, --display machine:0 X server display\n" + " -l, --levels directory alternative level directory\n" + " -s, --serveronly only start network server\n" + " -n, --network network multiplayer game\n" + " -v, --verbose verbose mode\n", + program_name); + exit(0); + } + else if (strncmp(option, "-display", option_len) == 0) { - fprintf(output_stream, "%c", *format_ptr); - continue; + if (option_arg == NULL) + Error(ERR_EXIT_HELP, "option '%s' requires an argument", option_str); + + display_name = option_arg; + if (option_arg == next_option) + options_left++; + + printf("--display == '%s'\n", display_name); } + else if (strncmp(option, "-levels", option_len) == 0) + { + if (option_arg == NULL) + Error(ERR_EXIT_HELP, "option '%s' requires an argument", option_str); - switch(*++format_ptr) + level_directory = option_arg; + if (option_arg == next_option) + options_left++; + + printf("--levels == '%s'\n", level_directory); + } + else if (strncmp(option, "-network", option_len) == 0) { - case 'd': - i_value = va_arg(ap, int); - fprintf(output_stream, "%d", i_value); - break; - - case 'f': - d_value = va_arg(ap, double); - fprintf(output_stream, "%f", d_value); - break; - - case 's': - s_value = va_arg(ap, char *); - fprintf(output_stream, "%s", s_value); - break; - - default: - fprintf(stderr, "\nfatal(): invalid format string: %s\n", format_str); - exit(-1); + printf("--network\n"); + + standalone = FALSE; + } + else if (strncmp(option, "-serveronly", option_len) == 0) + { + printf("--serveronly\n"); + + serveronly = TRUE; + } + else if (strncmp(option, "-verbose", option_len) == 0) + { + printf("--verbose\n"); + + verbose = TRUE; } + else if (*option == '-') + Error(ERR_EXIT_HELP, "unrecognized option '%s'", option_str); + else if (server_host == NULL) + { + server_host = *options_left; + + printf("server.name == '%s'\n", server_host); + } + else if (server_port == 0) + { + server_port = atoi(*options_left); + if (server_port < 1024) + Error(ERR_EXIT_HELP, "bad port number '%d'", server_port); + + printf("port == %d\n", server_port); + } + else + Error(ERR_EXIT_HELP, "too many arguments"); + + options_left++; } +} - va_end(ap); +void Error(int mode, char *format_str, ...) +{ + FILE *output_stream = stderr; + char *process_name = ""; - fprintf(output_stream, "\n"); + if (mode == ERR_EXIT_SOUNDSERVER) + process_name = " sound server"; - if (fatal_error) + if (format_str) { - fprintf(output_stream, "%s: aborting\n", program_name); - CloseAll(); - exit(1); + va_list ap; + char *format_ptr; + char *s_value; + int i_value; + double d_value; + + fprintf(output_stream, "%s%s: ", program_name, process_name); + + va_start(ap, format_str); /* ap points to first unnamed argument */ + + for(format_ptr=format_str; *format_ptr; format_ptr++) + { + if (*format_ptr != '%') + { + fprintf(output_stream, "%c", *format_ptr); + continue; + } + + switch(*++format_ptr) + { + case 'd': + i_value = va_arg(ap, int); + fprintf(output_stream, "%d", i_value); + break; + + case 'f': + d_value = va_arg(ap, double); + fprintf(output_stream, "%f", d_value); + break; + + case 's': + s_value = va_arg(ap, char *); + fprintf(output_stream, "%s", s_value); + break; + + default: + fprintf(stderr, "\n%s: Error(): invalid format string: %s\n", + program_name, format_str); + CloseAllAndExit(10); + } + } + + va_end(ap); + + fprintf(output_stream, "\n"); + } + + if (mode == ERR_EXIT_HELP) + fprintf(output_stream, "%s: Try option '--help' for more information.\n", + program_name); + + if (mode != ERR_RETURN) + { + fprintf(output_stream, "%s%s: aborting\n", program_name, process_name); + CloseAllAndExit(1); } } + +/* like memcpy, but guaranteed to handle overlap when s <= t */ +void copydown(char *s, char *t, int n) +{ + for (; n; n--) + *(s++) = *(t++); +} + +void fatal(char *s) +{ + fprintf(stderr, "%s.\n", s); + exit(1); +}