X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Fmisc.c;h=50fee6407854469819a691ccb8826943f55fd08a;hb=550d22ec0c3f530f5d317746f3f7e75251a1de4b;hp=4632a0bccadefd2e2b45b2010643f4241f05b164;hpb=0e6c855b67e0cd3def7196396f3d1f45ff85b692;p=plomrogue diff --git a/src/misc.c b/src/misc.c index 4632a0b..50fee64 100644 --- a/src/misc.c +++ b/src/misc.c @@ -1,12 +1,14 @@ /* misc.c */ #include "misc.h" -#include /* for rename() */ +#include /* for errno */ #include /* for unlink(), acess() */ -#include /* for calloc(), free() */ +#include /* for size_t, calloc(), free() */ #include /* for strlen(), strcmp(), memcpy() */ #include /* for uint8_t, uint16_t */ -#include "readwrite.h" /* for [read/write]_uint[8/16/32][_bigendian]() */ +#include "readwrite.h" /* for [read/write]_uint[8/16/32][_bigendian](), + * try_fopen(), try_fclose() + */ #include "map_objects.h" /* for struct Monster, write_map_objects(), */ #include "map_object_actions.h" /* for is_passable(), move_monster() */ #include "map.h" /* for Map struct */ @@ -17,19 +19,96 @@ +extern char * trouble_msg(struct World * w, char * parent, char * child) +{ + char * p1 = "Trouble in "; + char * p2 = " with "; + char * p3 = "."; + uint16_t size = strlen(p1) + strlen(parent) + strlen(p2) + strlen(child) + + strlen(p3) + 1; + char * msg = malloc(size); + exit_err(NULL == msg, w, "malloc() in trouble_msg() failed."); + sprintf(msg, "%s%s%s%s%s", p1, parent, p2, child, p3); + return msg; +} + + + +extern void * try_malloc(size_t size, struct World * w, char * f) +{ + char * msg = trouble_msg(w, f, "malloc()"); + void * p = malloc(size); + exit_err(NULL == p, w, msg); + free(msg); + return p; +} + + + +extern void * try_calloc(size_t size1, size_t size2, struct World * w, char * f) +{ + char * msg = trouble_msg(w, f, "calloc()"); + void * p = calloc(size1, size2); + exit_err(NULL == p, w, msg); + free(msg); + return p; +} + + + +extern void check_files_xor(char * p1, char * p2, struct World * w) +{ + char * msg1 = "A file '"; + char * msg2 = "' exists, but no file '"; + char * msg3 = "'. If everything was in order, both or noe would exist. " + "The game won't start until this is corrected."; + uint16_t size = strlen(msg1) + strlen(p1) + strlen(msg2) + strlen(p2) + + strlen(msg3); + char msg[size]; + if (!access(p1, F_OK) && access(p2, F_OK)) + { + sprintf(msg, "%s%s%s%s%s", msg1, p1, msg2, p2, msg3); + errno = 0; + exit_err(1, w, msg); + } + else if (access(p1, F_OK) && !access(p2, F_OK)) + { + sprintf(msg, "%s%s%s%s%s", msg1, p2, msg2, p1, msg3); + errno = 0; + exit_err(1, w, msg); + } +} + + + +extern void check_tempfile(char * path, struct World * w) +{ + char * msg1 = "A file '"; + char * msg2 = "' exists, probably from a corrupted previous file saving " + "process. To avoid corruption of game files, the game won't " + "start until it is removed or renamed."; + uint16_t size = strlen(msg1) + strlen(path) + strlen(msg2); + char msg[size]; + sprintf(msg, "%s%s%s", msg1, path, msg2); + exit_err(!access(path, F_OK), w, msg); +} + + + extern void update_log(struct World * world, char * text) { + char * f_name = "update_log()"; static char * last_msg; /* TODO: valgrind is dissatisfied */ - if (0 == last_msg) /* with this calloc'd pointer */ - { /* never being freed. */ - last_msg = calloc(1, sizeof(char)); /* Rectify this ? */ + if (0 == last_msg) /* with this calloc'd pointer not */ + { /* being freed. Rectify this? */ + last_msg = try_calloc(1, sizeof(char), world, f_name); } char * new_text; uint16_t len_old = strlen(world->log); if (0 == strcmp(last_msg, text)) { uint16_t len_whole = len_old + 1; - new_text = calloc(len_whole + 1, sizeof(char)); + new_text = try_calloc(len_whole + 1, sizeof(char), world, f_name); memcpy(new_text, world->log, len_old); memcpy(new_text + len_old, ".", 1); } @@ -37,10 +116,10 @@ extern void update_log(struct World * world, char * text) { uint16_t len_new = strlen(text); uint16_t len_whole = len_old + len_new + 1; - new_text = calloc(len_whole, sizeof(char)); + new_text = try_calloc(len_whole, sizeof(char), world, f_name); memcpy(new_text, world->log, len_old); memcpy(new_text + len_old, text, len_new); - last_msg = calloc(len_new + 1, sizeof(char)); + last_msg = try_calloc(len_new + 1, sizeof(char), world, f_name); memcpy(last_msg, text, len_new); } free(world->log); @@ -74,36 +153,26 @@ extern uint16_t center_offset(uint16_t pos, uint16_t mapsize, extern void turn_over(struct World * world, char action) { - char * err_open = "Trouble in turn_over() with fopen() " - "opening file 'record_tmp' for appending."; + char * f_name = "turn_over()"; char * err_write = "Trouble in turn_over() with write_uint8() " "writing to opened file 'record_tmp'."; - char * err_close = "Trouble in turn_over() with fclose() " - "closing opened file 'record'."; - char * err_unl = "Trouble in turn_over() with unlink() " - "unlinking old file 'record'."; - char * err_move = "Trouble in turn_over() with rename() " - "renaming file 'record_tmp' to 'record'."; + char * recordfile_tmp = "record_tmp"; char * recordfile = "record"; if (1 == world->interactive) { - FILE * file_old = fopen(recordfile, "r"); - FILE * file_new = fopen(recordfile_tmp, "w"); - exit_err(0 == file_old, world, err_open); + FILE * file_old = try_fopen(recordfile, "r", world, f_name); + FILE * file_new = try_fopen(recordfile_tmp, "w", world, f_name); char c = fgetc(file_old); while (EOF != c) { exit_err(write_uint8(c, file_new), world, err_write); c = fgetc(file_old); } - exit_err(fclose(file_old), world, err_close); + try_fclose(file_old, world, f_name); exit_err(write_uint8(action, file_new), world, err_write); - err_close = "Trouble in turn_over() with fclose() " - "closing opened file 'record_tmp'."; - exit_err(fclose(file_new), world, err_close); - exit_err(unlink(recordfile), world, err_unl); - exit_err(rename(recordfile_tmp, recordfile), world, err_move); + try_fclose_unlink_rename(file_new, recordfile_tmp, recordfile, + world, f_name); } world->turn++; rrand_seed(world->seed * world->turn); @@ -120,20 +189,13 @@ extern void turn_over(struct World * world, char action) extern void save_game(struct World * world) { - char * err_open = "Trouble in save_game() with fopen() " - "opening file 'savefile_tmp' for writing."; + char * f_name = "save_game()"; char * err_write = "Trouble in save_game() " "writing to opened file 'savefile_tmp'."; - char * err_close = "Trouble in save_game() with fclose() " - "closing opened file 'savefile_tmp'."; - char * err_unl = "Trouble in save_game() with unlink() " - "unlinking old 'savefile' file."; - char * err_move = "Trouble in save_game() with rename() " - "renaming 'file savefile_tmp' to 'savefile'."; + char * savefile_tmp = "savefile_tmp"; char * savefile = "savefile"; - FILE * file = fopen(savefile_tmp, "w"); - exit_err(0 == file, world, err_open); + FILE * file = try_fopen(savefile_tmp, "w", world, f_name); if ( write_uint32_bigendian(world->seed, file) || write_uint32_bigendian(world->turn, file) || write_uint16_bigendian(world->score, file) @@ -145,12 +207,7 @@ extern void save_game(struct World * world) { exit_err(1, world, err_write); } - exit_err(fclose(file), world, err_close); - if (!access(savefile, F_OK)) - { - exit_err(unlink(savefile), world, err_unl); - } - exit_err(rename(savefile_tmp, savefile), world, err_move); + try_fclose_unlink_rename(file, savefile_tmp, savefile, world, f_name); }