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Location: cpp/openttd-patchpack/source/src/string.h - annotation
r6111:f19227e298a8
3.0 KiB
text/x-c
(svn r8847) -Fix
There is not much point in hiding a normal 64bit multiplication in a function, so do not do it
There is not much point in hiding a normal 64bit multiplication in a function, so do not do it
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#ifndef STRING_H
#define STRING_H
#include "macros.h"
/*
* dst: destination buffer
* src: string to copy/concatenate
* size: size of the destination buffer
* usage: ttd_strlcpy(dst, src, lengthof(dst));
*/
void ttd_strlcat(char *dst, const char *src, size_t size);
void ttd_strlcpy(char *dst, const char *src, size_t size);
/*
* dst: destination buffer
* src: string to copy
* last: pointer to the last element in the dst array
* if NULL no boundary check is performed
* returns a pointer to the terminating \0 in the destination buffer
* usage: strecpy(dst, src, lastof(dst));
*/
char* strecat(char* dst, const char* src, const char* last);
char* strecpy(char* dst, const char* src, const char* last);
char* CDECL str_fmt(const char* str, ...);
/** Scans the string for valid characters and if it finds invalid ones,
* replaces them with a question mark '?' */
void str_validate(char *str);
/** Scans the string for colour codes and strips them */
void str_strip_colours(char *str);
/**
* Valid filter types for IsValidChar.
*/
typedef enum CharSetFilter {
CS_ALPHANUMERAL, //! Both numeric and alphabetic and spaces and stuff
CS_NUMERAL, //! Only numeric ones
CS_ALPHA, //! Only alphabetic values
} CharSetFilter;
/** Convert the given string to lowercase, only works with ASCII! */
void strtolower(char *str);
static inline bool StrEmpty(const char* s) { return s[0] == '\0'; }
/** Get the length of a string, within a limited buffer */
static inline int ttd_strnlen(const char *str, int maxlen)
{
const char *t;
for (t = str; *t != '\0' && t - str < maxlen; t++);
return t - str;
}
/** Convert the md5sum number to a 'hexadecimal' string, return next pos in buffer */
char *md5sumToString(char *buf, const char *last, const uint8 md5sum[16]);
typedef uint32 WChar;
/**
* 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 IsValidChar(WChar key, CharSetFilter afilter);
size_t Utf8Decode(WChar *c, const char *s);
size_t Utf8Encode(char *buf, WChar c);
static inline WChar Utf8Consume(const char **s)
{
WChar c;
*s += Utf8Decode(&c, *s);
return c;
}
/** Return the length of a UTF-8 encoded character.
* @param c Unicode character.
* @return Length of UTF-8 encoding for character.
*/
static inline size_t Utf8CharLen(WChar c)
{
if (c < 0x80) return 1;
if (c < 0x800) return 2;
if (c < 0x10000) return 3;
if (c < 0x110000) return 4;
/* Invalid valid, we encode as a '?' */
return 1;
}
/* Check if the given character is part of a UTF8 sequence */
static inline bool IsUtf8Part(char c)
{
return GB(c, 6, 2) == 2;
}
static inline bool IsPrintable(WChar c)
{
if (c < 0x20) return false;
if (c < 0xE000) return true;
if (c < 0xE200) return false;
return true;
}
#endif /* STRING_H */
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