author | truelight |
Sat, 19 Aug 2006 10:00:30 +0000 | |
changeset 4300 | c7e43c47a2b9 |
parent 4299 | 91f5d2bedcff |
child 4370 | 5beb8896ae3d |
permissions | -rw-r--r-- |
2186 | 1 |
/* $Id$ */ |
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#include "stdafx.h" |
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#include "string.h" |
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#include <stdarg.h> |
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#include <ctype.h> // required for tolower() |
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void ttd_strlcat(char *dst, const char *src, size_t size) |
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{ |
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assert(size > 0); |
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for (; size > 0 && *dst != '\0'; --size, ++dst) {} |
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assert(size > 0); |
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while (--size > 0 && *src != '\0') *dst++ = *src++; |
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*dst = '\0'; |
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} |
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|
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|
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void ttd_strlcpy(char *dst, const char *src, size_t size) |
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{ |
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assert(size > 0); |
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while (--size > 0 && *src != '\0') *dst++ = *src++; |
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*dst = '\0'; |
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} |
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|
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char* strecat(char* dst, const char* src, const char* last) |
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{ |
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assert(last == NULL || dst <= last); |
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for (; *dst != '\0'; ++dst) |
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if (dst == last) return dst; |
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for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src; |
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*dst = '\0'; |
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return strecpy(dst, src, last); |
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} |
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char* strecpy(char* dst, const char* src, const char* last) |
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{ |
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assert(last == NULL || dst <= last); |
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for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src; |
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*dst = '\0'; |
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return dst; |
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} |
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char* CDECL str_fmt(const char* str, ...) |
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{ |
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char buf[4096]; |
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va_list va; |
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int len; |
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char* p; |
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va_start(va, str); |
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len = vsprintf(buf, str, va); |
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va_end(va); |
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p = malloc(len + 1); |
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if (p != NULL) memcpy(p, buf, len + 1); |
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return p; |
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} |
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void str_validate(char *str) |
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{ |
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for (; *str != '\0'; str++) |
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if (!IsValidAsciiChar(*str, CS_ALPHANUMERAL)) *str = '?'; |
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} |
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/** |
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* Only allow certain keys. You can define the filter to be used. This makes |
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* sure no invalid keys can get into an editbox, like BELL. |
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* @param key character to be checked |
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* @param afilter the filter to use |
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* @return true or false depending if the character is printable/valid or not |
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*/ |
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bool IsValidAsciiChar(byte key, CharSetFilter afilter) |
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{ |
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bool firsttest = false; |
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switch (afilter) { |
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case CS_ALPHANUMERAL: |
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firsttest = (key >= ' ' && key < 127); |
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break; |
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/* We are very strict here */ |
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case CS_NUMERAL: |
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return (key >= '0' && key <= '9'); |
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case CS_ALPHA: |
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default: |
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firsttest = ((key >= 'A' && key <= 'Z') || (key >= 'a' && key <= 'z')); |
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break; |
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} |
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/* Allow some special chars too that are non-ASCII but still valid (like '^' above 'a') */ |
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return (firsttest || (key >= 160 && |
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key != 0xAA && key != 0xAC && key != 0xAD && key != 0xAF && |
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key != 0xB5 && key != 0xB6 && key != 0xB7 && key != 0xB9)); |
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} |
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void strtolower(char *str) |
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{ |
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for (; *str != '\0'; str++) *str = tolower(*str); |
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} |