static int unescape(gh_buf *ob, const uint8_t *src, size_t size, bool unescape_plus) { size_t i = 0, org; while (i < size) { org = i; while (i < size && src[i] != '%' && src[i] != '+') i++; if (likely(i > org)) { if (unlikely(org == 0)) { if (i >= size) return 0; gh_buf_grow(ob, HOUDINI_UNESCAPED_SIZE(size)); } gh_buf_put(ob, src + org, i - org); } /* escaping */ if (i >= size) break; if (src[i++] == '+') { gh_buf_putc(ob, unescape_plus ? ' ' : '+'); continue; } if (i + 1 < size && _isxdigit(src[i]) && _isxdigit(src[i + 1])) { unsigned char new_char = (hex2c(src[i]) << 4) + hex2c(src[i + 1]); gh_buf_putc(ob, new_char); i += 2; } else { gh_buf_putc(ob, '%'); } } return 1; }
int houdini_unescape_html(cmark_strbuf *ob, const uint8_t *src, size_t size) { size_t i = 0, org, ent; while (i < size) { org = i; while (i < size && src[i] != '&') i++; if (likely(i > org)) { if (unlikely(org == 0)) { if (i >= size) return 0; cmark_strbuf_grow(ob, HOUDINI_UNESCAPED_SIZE(size)); } cmark_strbuf_put(ob, src + org, i - org); } /* escaping */ if (i >= size) break; i++; ent = houdini_unescape_ent(ob, src + i, size - i); i += ent; /* not really an entity */ if (ent == 0) cmark_strbuf_putc(ob, '&'); } return 1; }