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Add scouts honor escape hatch for source embedding

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This commit is contained in:
Justine Tunney 2020-06-15 19:01:28 -07:00
parent c91b3c5006
commit b4269930f7
547 changed files with 1516 additions and 944 deletions
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33
libc/str/tpencode.ncabi.c
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@ -18,7 +18,8 @@
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/str/internal.h"
#include "libc/str/str.h"
#include "libc/str/tpenc.h"
#include "libc/str/tpencode.h"
/**
* Thompson-Pike Varint Encoder.
@ -27,29 +28,27 @@
* is only called for non-ASCII, or DCE'd entirely. In addition to that
* this function makes a promise to not clobber any registers but %rax.
*
* @param buf is what ch gets encoded to
* @param p is what ch gets encoded to
* @param size is the number of bytes available in buf
* @param ch is a 32-bit integer
* @param awesome mode enables numbers the IETF unilaterally banned
* @return number of bytes written
* @note this encoding was designed on a napkin in a new jersey diner
*/
unsigned(tpencode)(char *buf, size_t size, wint_t ch, bool32 awesome) {
unsigned char *p = (unsigned char *)buf;
if ((0 <= ch && ch < 32) && awesome && size >= 2) {
unsigned(tpencode)(char *p, size_t size, wint_t wc, bool32 awesome) {
int i, j;
unsigned long w;
if ((0 <= wc && wc < 32) && awesome && size >= 2) {
p[0] = 0xc0;
p[1] = 0x80 | (unsigned char)ch;
p[1] = 0x80;
p[1] |= wc;
return 2;
}
struct TpEncode op = UseTpDecoderRing(ch);
size_t i = op.len;
if (op.len <= size) {
for (;;) {
p[--i] = (unsigned char)(0b10000000 | (ch & 0b00111111));
if (!i) break;
ch >>= 6;
}
p[0] = op.mark | (unsigned char)ch;
}
return op.len;
i = 0;
w = tpenc(wc);
do {
if (!size--) break;
p[i++] = w & 0xff;
} while (w >>= 8);
return i;
}