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implement catdup4()

This commit is contained in:
Nedko Arnaudov 2009-12-12 15:10:06 +02:00
parent 4a2c32b36e
commit 20492b6b44
2 changed files with 29 additions and 0 deletions
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28
catdup.c
View File

@ -76,3 +76,31 @@ char * catdup3(const char * s1, const char * s2, const char * s3)
return buffer;
}
char * catdup4(const char * s1, const char * s2, const char * s3, const char * s4)
{
char * buffer;
size_t s1_len, s2_len, s3_len, s4_len;
ASSERT(s1 != NULL && s2 != NULL && s3 != NULL && s4 != NULL);
s1_len = strlen(s1);
s2_len = strlen(s2);
s3_len = strlen(s3);
s4_len = strlen(s4);
buffer = malloc(s1_len + s2_len + s3_len + s4_len + 1);
if (buffer == NULL)
{
log_error("malloc() failed.");
return NULL;
}
memcpy(buffer, s1, s1_len);
memcpy(buffer + s1_len, s2, s2_len);
memcpy(buffer + s1_len + s2_len, s3, s3_len);
memcpy(buffer + s1_len + s2_len + s3_len, s4, s4_len);
buffer[s1_len + s2_len + s3_len + s4_len] = 0;
return buffer;
}

1
catdup.h
View File

@ -29,5 +29,6 @@
char * catdup(const char * s1, const char * s2);
char * catdup3(const char * s1, const char * s2, const char * s3);
char * catdup4(const char * s1, const char * s2, const char * s3, const char * s4);
#endif /* #ifndef CATDUP_H__D42302F1_4D96_4EE4_AC09_E97ED5748277__INCLUDED */