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#include "internal.h"
// append will append the given null terminated c string to the string data
// structure. this variant can append a substring of length len of the given
// string to our buffer. the result is reallocated if not enough room is present
// in the buffer.
int
string·appendlen(string *s, vlong n, byte* b)
{
/*
bl = strlen(b);
if (n > bl) panicf("attempted to make a substring longer than string");
*/
string·grow(s, n);
if(*s == nil)
return 0;
Hdr* h = (Hdr*)(*s - sizeof(Hdr));
mem·copy(*s + string·len(*s), n, b);
h->len += n;
(*s)[h->len] = '\0';
return n;
}
// append will append the given null terminated c string to the string data
// structure. this variant will append the entire string.
int
string·append(string *s, byte* b)
{
return string·appendlen(s, str·len(b), b);
}
// appendbyte will append the given byte to our string.
// NOTE: as the byte is on the stack, it is not null-terminated.
// can not pass to the above functions.
int
string·appendbyte(string *s, byte b)
{
string·grow(s, 1);
if(*s == nil)
return 0;
Hdr* h = (Hdr*)(*s - sizeof(Hdr));
*(*s + string·len(*s)) = b;
h->len++;
(*s)[h->len] = '\0'; // NOTE: I don't think an explicit zero is required..?
return 1;
}
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