X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Fclient%2Fio.c;h=45a1de7ae6fe17d5c4973c172a8c453b6319adf4;hb=258e57c1621533e206610453047d829cc8aa13fe;hp=39fd75e657526cc7ea4a45f1a53eac330f1c9a91;hpb=491e8bc8e7a9b1d312256817c0b8be7e05b127be;p=plomrogue diff --git a/src/client/io.c b/src/client/io.c index 39fd75e..45a1de7 100644 --- a/src/client/io.c +++ b/src/client/io.c @@ -1,11 +1,16 @@ -/* src/client/io.c */ +/* src/client/io.c + * + * This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3 + * or any later version. For details on its copyright, license, and warranties, + * see the file NOTICE in the root directory of the PlomRogue source package. + */ #define _POSIX_C_SOURCE 1 /* PIPE_BUF */ #include "io.h" #include /* PIPE_BUF */ #include /* halfdelay(), getch() */ #include /* NULL */ -#include /* uint8_t, uint16_t, uint32_t */ +#include /* uint8_t, uint16_t, uint32_t, UINT32_MAX */ #include /* FILE, sprintf(), fseek(), fflush() */ #include /* strcmp(), strlen(), memcpy() */ #include /* free(), atoi() */ @@ -16,7 +21,9 @@ #include "../common/try_malloc.h" /* try_malloc() */ #include "../common/rexit.h" /* exit_trouble(), exit_err() */ #include "../common/readwrite.h" /* try_fopen(), try_fclose(), try_fgets(), - * try_fgetc(), textfile_width(), try_fputc() + * try_fgetc(), textfile_width(), try_fputc(), + * read_file_into_queue(), + * get_message_from_queue(), */ #include "control.h" /* try_key() */ #include "map.h" /* map_center() */ @@ -36,18 +43,13 @@ static void read_inventory(char * read_buf, uint32_t linemax, FILE * file); */ static void read_map_cells(FILE * file, char ** map); -/* Repeatedly use try_fgets() with given arguments to read the remaining lines - * of "file" into the world.log string. - */ -static void read_log(char * read_buf, uint32_t linemax, FILE * file); - /* Return value seen by atoi() in next line of "file" when passed to try_fgets() * with the given arguments. */ static uint16_t read_value_from_line(char * read_buf, uint32_t linemax, FILE * file); -/* If the server's worldstate file has changed since the last read_world(), +/* If the server's worldstate file has changed since the last read_worldstate(), * return a pointer to its file descriptor; else, return NULL. * * Two tests are performed to check for a file change. The file's last data @@ -64,24 +66,25 @@ static uint16_t read_value_from_line(char * read_buf, uint32_t linemax, static FILE * changed_worldstate_file(char * path); /* Attempt to read the server's worldstate file as representation of the game - * world in a hard-coded serialization format. Returns 1 on success and 0 if the + * world in a hard-coded serialization format. Returns 1 on success, or 0 if the * out file wasn't read for supposedly not having changed since a last - * read_world() call. + * read_worldstate() call. * - * map_center() is triggered by either, the first successful read_world() (thus - * on client start), or on turn 1 (thus on world start). + * map_center() is triggered by either, the first successful read_worldstate() + * (thus on client start), or on turn 1 (thus on world start). */ -static uint8_t read_world(); +static uint8_t read_worldstate(); -/* If "last_server_answer_time" is too old, send a PING to the server; or, if a - * previous PING has not sparked any answer after a while, abort the client. +/* Poll server for queue input. If no new input, send ping, or, if ping already + * sent but unanswered for some time, abort. */ -static void test_ping_pong(time_t last_server_answer_time); +static void test_and_poll_server(); -/* Update "last_server_answer_time" if new stuff has been written to the - * server's out file. - */ -static void test_server_activity(time_t * last_server_answer_time); +/* If "string", append \n-prefixed "append", else write "append" as "string". */ +static void nl_append_string(char * append, char ** string); + +/* Read messages from queue, act on them. */ +static uint8_t read_queue(); @@ -139,29 +142,6 @@ static void read_map_cells(FILE * file, char ** map) -static void read_log(char * read_buf, uint32_t linemax, FILE * file) -{ - free(world.log); - world.log = NULL; - while (try_fgets(read_buf, linemax + 1, file, __func__)) - { - int old_size = 0; - if (world.log) - { - old_size = strlen(world.log); - } - int new_size = strlen(read_buf); - char * new_log = try_malloc(old_size + new_size + 1, __func__); - memcpy(new_log, world.log, old_size); - int test = sprintf(new_log + old_size, "%s", read_buf); - exit_trouble(test < 0, __func__, "sprintf"); - free(world.log); - world.log = new_log; - } -} - - - static uint16_t read_value_from_line(char * read_buf, uint32_t linemax, FILE * file) { @@ -194,7 +174,7 @@ static FILE * changed_worldstate_file(char * path) -static uint8_t read_world() +static uint8_t read_worldstate() { char * path = "server/worldstate"; char * quit_msg = "No worldstate file found to read. Server may be down."; @@ -220,7 +200,6 @@ static uint8_t read_world() world.map.length = read_value_from_line(read_buf, linemax, file); read_map_cells(file, &world.map.cells); read_map_cells(file, &world.mem_map); - read_log(read_buf, linemax, file); free(read_buf); try_fclose(file, __func__); return 1; @@ -228,13 +207,20 @@ static uint8_t read_world() -static void test_ping_pong(time_t last_server_answer_time) +static void test_and_poll_server() { + static time_t last_server_answer_time = 0; static uint8_t ping_sent = 0; - time_t now = time(0); - if (ping_sent && last_server_answer_time > now - 3) + if (read_file_into_queue(world.file_server_out, &world.queue)) { - ping_sent = 0; + last_server_answer_time = time(0); + return; + } + time_t now = time(0); + if (ping_sent && last_server_answer_time > now - 3) /* Re-set if last */ + { /* ping was answered */ + ping_sent = 0; /* with server */ + return; /* activity. */ } if (!ping_sent && last_server_answer_time < now - 3) { @@ -247,19 +233,76 @@ static void test_ping_pong(time_t last_server_answer_time) -static void test_server_activity(time_t * last_server_answer_time) +static void nl_append_string(char * append, char ** string) { - int test = try_fgetc(world.file_server_out, __func__); - if (EOF == test) + char * err = "too large sizes"; + exit_trouble(UINT32_MAX < strlen(append), __func__, err); + uint32_t new_size = strlen(append); + uint32_t old_size = 0; + uint8_t add_nl = 0; + if (*string) { - return; + exit_trouble(UINT32_MAX < new_size + strlen(*string), __func__, err); + old_size = strlen(*string); + add_nl = 1; } - do + char * new_string = try_malloc(old_size + add_nl + new_size + 1, __func__); + memcpy(new_string, *string, old_size); + char * pattern = add_nl ? "\n%s" : "%s"; + int test = sprintf(new_string + old_size, pattern, append); + exit_trouble(test < 0, __func__, "sprintf"); + free(*string); + *string = new_string; +} + + + +static uint8_t read_queue() +{ + static uint8_t things_here_parsing = 0; + uint8_t ret = 0; + char * msg; + while (NULL != (msg = get_message_from_queue(&world.queue))) { - ; + char * log_prefix = "LOG "; + if (!strcmp(msg, "THINGS_HERE START")) + { + ret = 1; + things_here_parsing = 1; + free(world.things_here); + world.things_here = NULL; + } + else if (!strcmp(msg, "THINGS_HERE END")) + { + things_here_parsing = 0; + if (!world.things_here) + { + nl_append_string("(none known)", &world.things_here); + } + } + else if (things_here_parsing) + { + ret = 1; + nl_append_string(msg, &world.things_here); + } + else if (!strncmp(msg, log_prefix, strlen(log_prefix))) + { + ret = 1; + nl_append_string(msg + strlen(log_prefix), &world.log); + } + else if (!strcmp(msg, "NEW_WORLD")) + { + ret = 1; + free(world.log); + world.log = NULL; + } + else if (!strcmp(msg, "WORLD_UPDATED")) + { + query_mapcell(); + } + free(msg); } - while (EOF != (test = try_fgetc(world.file_server_out, __func__))); - * last_server_answer_time = time(0); + return ret; } @@ -267,7 +310,7 @@ static void test_server_activity(time_t * last_server_answer_time) extern void send(char * msg) { uint32_t msg_size = strlen(msg) + 1; - char * err = "send() tries to send message larger than PIPE_BUF bytes."; + char * err = "send() tried to send message larger than PIPE_BUF bytes."; exit_err(msg_size > PIPE_BUF, err); try_fwrite(msg, strlen(msg), 1, world.file_server_in, __func__); try_fputc('\n', world.file_server_in, __func__); @@ -278,24 +321,22 @@ extern void send(char * msg) extern char * io_loop() { - world.halfdelay = 1; /* Ensures read_world() is only called 10 */ - halfdelay(world.halfdelay); /* times a second during user inactivity. */ + world.halfdelay = 1; /* Ensure server is polled only 10 times */ + halfdelay(world.halfdelay); /* a second during user inactivity. */ uint8_t change_in_client = 0; uint16_t last_focused_turn = world.turn; - time_t last_server_answer_time = time(0); while (1) { - test_server_activity(&last_server_answer_time); - test_ping_pong(last_server_answer_time); + test_and_poll_server(); if (world.winch) { reset_windows_on_winch(); world.winch = 0; change_in_client++; } - if (change_in_client || read_world()) + if (change_in_client || read_worldstate() || read_queue()) { - if (world.turn != last_focused_turn && world.focus_each_turn) + if (world.turn != last_focused_turn && world.autofocus) { last_focused_turn = world.turn; map_center();