diff options
Diffstat (limited to 'src/common/utils.c')
| -rw-r--r-- | src/common/utils.c | 53 |
1 files changed, 46 insertions, 7 deletions
diff --git a/src/common/utils.c b/src/common/utils.c index 73df3aae1..0d76a885e 100644 --- a/src/common/utils.c +++ b/src/common/utils.c @@ -2,7 +2,7 @@ * This file is part of Hercules. * http://herc.ws - http://github.com/HerculesWS/Hercules * - * Copyright (C) 2012-2015 Hercules Dev Team + * Copyright (C) 2012-2016 Hercules Dev Team * Copyright (C) Athena Dev Teams * * Hercules is free software: you can redistribute it and/or modify @@ -54,6 +54,9 @@ void WriteDump(FILE* fp, const void* buffer, size_t length) size_t i; char hex[48+1], ascii[16+1]; + nullpo_retv(fp); + nullpo_retv(buffer); + fprintf(fp, "--- 00-01-02-03-04-05-06-07-08-09-0A-0B-0C-0D-0E-0F 0123456789ABCDEF\n"); ascii[16] = 0; @@ -78,10 +81,12 @@ void WriteDump(FILE* fp, const void* buffer, size_t length) } /// Dumps given buffer on the console. -void ShowDump(const void *buffer, size_t length) { +void ShowDump(const void *buffer, size_t length) +{ size_t i; char hex[48+1], ascii[16+1]; + nullpo_retv(buffer); ShowDebug("--- 00-01-02-03-04-05-06-07-08-09-0A-0B-0C-0D-0E-0F 0123456789ABCDEF\n"); ascii[16] = 0; @@ -108,6 +113,7 @@ static char* checkpath(char *path, const char *srcpath) { // just make sure the char*path is not const char *p = path; + if (NULL == path || NULL == srcpath) return path; while(*srcpath) { @@ -353,6 +359,28 @@ unsigned int get_percentage(const unsigned int A, const unsigned int B) return (unsigned int)floor(result); } +/// calculates the value of A / B, in percent (rounded down) +uint64 get_percentage64(const uint64 A, const uint64 B) +{ + double result; + + if( B == 0 ) + { + ShowError("get_percentage(): division by zero! (A=%"PRIu64",B=%"PRIu64")\n", A, B); + return ~0U; + } + + result = 100 * ((double)A / (double)B); + + if( result > UINT_MAX ) + { + ShowError("get_percentage(): result percentage too high! (A=%"PRIu64",B=%"PRIu64",result=%g)\n", A, B, result); + return UINT_MAX; + } + + return (uint64)floor(result); +} + /** * Applies a percentual rate modifier. * @@ -400,7 +428,9 @@ int apply_percentrate(int value, int rate, int maxrate) //----------------------------------------------------- const char* timestamp2string(char* str, size_t size, time_t timestamp, const char* format) { - size_t len = strftime(str, size, format, localtime(×tamp)); + size_t len; + nullpo_retr(NULL, str); + len = strftime(str, size, format, localtime(×tamp)); memset(str + len, '\0', size - len); return str; } @@ -413,6 +443,7 @@ bool HCache_check(const char *file) char s_path[255], dT[1]; time_t rtime; + nullpo_retr(false, file); if (!(first = fopen(file,"rb"))) return false; @@ -456,10 +487,14 @@ bool HCache_check(const char *file) return true; } -FILE *HCache_open(const char *file, const char *opt) { +FILE *HCache_open(const char *file, const char *opt) +{ FILE *first; char s_path[255]; + nullpo_retr(NULL, file); + nullpo_retr(NULL, opt); + if( file[0] == '.' && file[1] == '/' ) file += 2; else if( file[0] == '.' ) @@ -498,15 +533,19 @@ void HCache_init(void) } /* transit to fread, shields vs warn_unused_result */ -size_t hread(void * ptr, size_t size, size_t count, FILE * stream) { +size_t hread(void *ptr, size_t size, size_t count, FILE *stream) +{ return fread(ptr, size, count, stream); } + /* transit to fwrite, shields vs warn_unused_result */ -size_t hwrite(const void * ptr, size_t size, size_t count, FILE * stream) { +size_t hwrite(const void *ptr, size_t size, size_t count, FILE *stream) +{ return fwrite(ptr, size, count, stream); } -void HCache_defaults(void) { +void HCache_defaults(void) +{ HCache = &HCache_s; HCache->init = HCache_init; |