/* $Id$ */ #include "stdafx.h" #include "openttd.h" #include "functions.h" #include "string.h" #include <stdarg.h> #include <ctype.h> // required for tolower() void ttd_strlcat(char *dst, const char *src, size_t size) { assert(size > 0); for (; size > 0 && *dst != '\0'; --size, ++dst) {} assert(size > 0); while (--size > 0 && *src != '\0') *dst++ = *src++; *dst = '\0'; } void ttd_strlcpy(char *dst, const char *src, size_t size) { assert(size > 0); while (--size > 0 && *src != '\0') *dst++ = *src++; *dst = '\0'; } char* strecat(char* dst, const char* src, const char* last) { assert(dst <= last); for (; *dst != '\0'; ++dst) if (dst == last) return dst; for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src; *dst = '\0'; return strecpy(dst, src, last); } char* strecpy(char* dst, const char* src, const char* last) { assert(dst <= last); for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src; *dst = '\0'; #if 1 if (dst == last && *src != '\0') { error("String too long for destination buffer"); } #endif return dst; } char* CDECL str_fmt(const char* str, ...) { char buf[4096]; va_list va; int len; char* p; va_start(va, str); len = vsnprintf(buf, lengthof(buf), str, va); va_end(va); p = malloc(len + 1); if (p != NULL) memcpy(p, buf, len + 1); return p; } void str_validate(char *str) { for (; *str != '\0'; str++) if (!IsValidAsciiChar(*str, CS_ALPHANUMERAL)) *str = '?'; } void str_strip_colours(char *str) { char *dst = str; for (; *str != '\0';) { if (*str >= 15 && *str <= 31) { // magic colour codes str++; } else { *dst++ = *str++; } } *dst = '\0'; } /** * Only allow certain keys. You can define the filter to be used. This makes * sure no invalid keys can get into an editbox, like BELL. * @param key character to be checked * @param afilter the filter to use * @return true or false depending if the character is printable/valid or not */ bool IsValidAsciiChar(byte key, CharSetFilter afilter) { bool firsttest = false; switch (afilter) { case CS_ALPHANUMERAL: firsttest = (key >= ' ' && key < 127); break; /* We are very strict here */ case CS_NUMERAL: return (key >= '0' && key <= '9'); case CS_ALPHA: default: firsttest = ((key >= 'A' && key <= 'Z') || (key >= 'a' && key <= 'z')); break; } /* Allow some special chars too that are non-ASCII but still valid (like '^' above 'a') */ return (firsttest || (key >= 160 && key != 0xAA && key != 0xAC && key != 0xAD && key != 0xAF && key != 0xB5 && key != 0xB6 && key != 0xB7 && key != 0xB9)); } void strtolower(char *str) { for (; *str != '\0'; str++) *str = tolower(*str); } #ifdef WIN32 int CDECL snprintf(char *str, size_t size, const char *format, ...) { va_list ap; int ret; va_start(ap, format); ret = vsnprintf(str, size, format, ap); va_end(ap); return ret; } #ifdef _MSC_VER int CDECL vsnprintf(char *str, size_t size, const char *format, va_list ap) { int ret; ret = _vsnprintf(str, size, format, ap); if (ret < 0) str[size - 1] = '\0'; return ret; } #endif /* _MSC_VER */ #endif /* WIN32 */