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Location: cpp/openttd-patchpack/source/string.c
r4603:3b159d0db197
2.7 KiB
text/x-c
(svn r6455) - Feature: Add 2cc (two company colours) livery schemes. This replaces the original colour selection window and bumps the saveload version. Liveries are supported for all vehicles, not just those with 2cc support. Thanks to lakie for GUI inspiration.
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#include "stdafx.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(last == NULL || 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(last == NULL || dst <= last);
for (; *src != '\0' && dst != last; ++dst, ++src) *dst = *src;
*dst = '\0';
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 = '?';
}
/**
* 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 */
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