108,6 → 108,7 |
#include <arch.h> |
#include <errno.h> |
#include <align.h> |
#include <debug.h> |
|
/** Byte mask consisting of lowest @n bits (out of 8) */ |
#define LO_MASK_8(n) ((uint8_t) ((1 << (n)) - 1)) |
528,38 → 529,70 |
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} |
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/** Copy NULL-terminated string. |
/** Copy string. |
* |
* Copy source string @a src to destination buffer @a dst. |
* No more than @a size bytes are written. NULL-terminator is always |
* written after the last succesfully copied character (i.e. if the |
* destination buffer is has at least 1 byte, it will be always |
* NULL-terminated). |
* Copy source string @a src to destination buffer @a dest. |
* No more than @a size bytes are written. If the size of the output buffer |
* is at least one byte, the output string will always be well-formed, i.e. |
* null-terminated and containing only complete characters. |
* |
* @param dst Destination buffer. |
* @param count Size of the destination buffer (must be > 0). |
* @param src Source string. |
*/ |
void str_cpy(char *dest, size_t size, const char *src) |
{ |
wchar_t ch; |
size_t src_off; |
size_t dest_off; |
|
/* There must be space for a null terminator in the buffer. */ |
ASSERT(size > 0); |
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src_off = 0; |
dest_off = 0; |
|
while ((ch = str_decode(src, &src_off, STR_NO_LIMIT)) != 0) { |
if (chr_encode(ch, dest, &dest_off, size - 1) != EOK) |
break; |
} |
|
dest[dest_off] = '\0'; |
} |
|
/** Copy size-limited substring. |
* |
* Copy prefix of string @a src of max. size @a size to destination buffer |
* @a dest. No more than @a size bytes are written. The output string will |
* always be well-formed, i.e. null-terminated and containing only complete |
* characters. |
* |
* No more than @a n bytes are read from the input string, so it does not |
* have to be null-terminated. |
* |
* @param dst Destination buffer. |
* @param count Size of the destination buffer. |
* |
* @param count Size of the destination buffer (must be > 0). |
* @param src Source string. |
* @param n Maximum number of bytes to read from @a src. |
*/ |
void str_ncpy(char *dst, const char *src, size_t size) |
void str_ncpy(char *dest, size_t size, const char *src, size_t n) |
{ |
/* No space for the NULL-terminator in the buffer */ |
if (size == 0) |
return; |
|
wchar_t ch; |
size_t str_off = 0; |
size_t dst_off = 0; |
size_t src_off; |
size_t dest_off; |
|
/* There must be space for a null terminator in the buffer. */ |
ASSERT(size > 0); |
|
while ((ch = str_decode(src, &str_off, STR_NO_LIMIT)) != 0) { |
if (chr_encode(ch, dst, &dst_off, size) != EOK) |
src_off = 0; |
dest_off = 0; |
|
while ((ch = str_decode(src, &src_off, n)) != 0) { |
if (chr_encode(ch, dest, &dest_off, size - 1) != EOK) |
break; |
} |
|
if (dst_off >= size) |
dst[size - 1] = 0; |
else |
dst[dst_off] = 0; |
|
dest[dest_off] = '\0'; |
} |
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/** Copy NULL-terminated wide string to string |
608,10 → 641,12 |
{ |
wchar_t acc; |
size_t off = 0; |
size_t last = 0; |
|
while ((acc = str_decode(str, &off, STR_NO_LIMIT)) != 0) { |
if (acc == ch) |
return (str + off); |
return (str + last); |
last = off; |
} |
|
return NULL; |