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Add function for creating hex string literals

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This commit is contained in:
Justine Tunney 2021-08-07 07:05:19 -07:00
parent aeeb851422
commit 1f766a332f
14 changed files with 250 additions and 112 deletions
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6
libc/stdio/vappendf.c
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@ -30,14 +30,16 @@
ssize_t(vappendf)(char **b, const char *f, va_list v) {
char *p;
int r, s;
size_t n;
va_list w;
struct appendz z;
z = appendz((p = *b));
va_copy(w, v);
if ((r = (vsnprintf)(p + z.i, z.n ? z.n - W - z.i : 0, f, v)) >= 0) {
if (ROUNDUP(z.i + r + 1, 8) + W > z.n) {
n = ROUNDUP(z.i + r + 1, 8) + W;
if (n > z.n) {
if (!z.n) z.n = W * 2;
while (ROUNDUP(z.i + r + 1, 8) + W > z.n) z.n += z.n >> 1;
while (n > z.n) z.n += z.n >> 1;
z.n = ROUNDUP(z.n, W);
if ((p = realloc(p, z.n))) {
z.n = malloc_usable_size(p);