struct archive_string *
__archive_string_append(struct archive_string *as, const char *p, size_t s)
{
if (__archive_string_ensure(as, as->length + s + 1) == NULL)
__archive_errx(1, "Out of memory");
memcpy(as->s + as->length, p, s);
as->s[as->length + s] = 0;
as->length += s;
return (as);
}
void
__archive_string_concat(struct archive_string *dest, struct archive_string *src)
{
if (src->length > 0) {
if (__archive_string_ensure(dest, dest->length + src->length + 1) == NULL)
__archive_errx(1, "Out of memory");
memcpy(dest->s + dest->length, src->s, src->length);
dest->length += src->length;
dest->s[dest->length] = 0;
}
}
void
__archive_string_copy(struct archive_string *dest, struct archive_string *src)
{
if (src->length == 0)
dest->length = 0;
else {
if (__archive_string_ensure(dest, src->length + 1) == NULL)
__archive_errx(1, "Out of memory");
memcpy(dest->s, src->s, src->length);
dest->length = src->length;
dest->s[dest->length] = 0;
}
}
/*
* Like 'vsprintf', but ensures the target is big enough, resizing if
* necessary.
*/
void
__archive_string_vsprintf(struct archive_string *as, const char *fmt,
va_list ap)
{
char long_flag;
intmax_t s; /* Signed integer temp. */
uintmax_t u; /* Unsigned integer temp. */
const char *p, *p2;
if (__archive_string_ensure(as, 64) == NULL)
__archive_errx(1, "Out of memory");
if (fmt == NULL) {
as->s[0] = 0;
return;
}
for (p = fmt; *p != '\0'; p++) {
const char *saved_p = p;
if (*p != '%') {
archive_strappend_char(as, *p);
continue;
}
p++;
long_flag = '\0';
switch(*p) {
case 'j':
long_flag = 'j';
p++;
break;
case 'l':
long_flag = 'l';
p++;
break;
}
switch (*p) {
case '%':
__archive_strappend_char(as, '%');
break;
case 'c':
s = va_arg(ap, int);
__archive_strappend_char(as, s);
break;
case 'd':
switch(long_flag) {
case 'j': s = va_arg(ap, intmax_t); break;
case 'l': s = va_arg(ap, long); break;
default: s = va_arg(ap, int); break;
}
append_int(as, s, 10);
break;
case 's':
p2 = va_arg(ap, char *);
archive_strcat(as, p2);
break;
case 'o': case 'u': case 'x': case 'X':
/* Common handling for unsigned integer formats. */
switch(long_flag) {
case 'j': u = va_arg(ap, uintmax_t); break;
case 'l': u = va_arg(ap, unsigned long); break;
default: u = va_arg(ap, unsigned int); break;
}
/* Format it in the correct base. */
switch (*p) {
case 'o': append_uint(as, u, 8); break;
case 'u': append_uint(as, u, 10); break;
default: append_uint(as, u, 16); break;
}
break;
default:
/* Rewind and print the initial '%' literally. */
p = saved_p;
archive_strappend_char(as, *p);
}
}
}
