/*
* __wt_raw_to_esc_hex --
* Convert a chunk of data to a nul-terminated printable string using
* escaped hex, as necessary.
*/
int
__wt_raw_to_esc_hex(
WT_SESSION_IMPL *session, const uint8_t *from, size_t size, WT_ITEM *to)
{
size_t i;
const uint8_t *p;
u_char *t;
/*
* In the worst case, every character takes up 3 spaces, plus a
* trailing nul byte.
*/
WT_RET(__wt_buf_init(session, to, size * 3 + 1));
for (p = from, t = to->mem, i = size; i > 0; --i, ++p)
if (__wt_isprint((u_char)*p)) {
if (*p == '\\')
*t++ = '\\';
*t++ = *p;
} else {
*t++ = '\\';
*t++ = __wt_hex((*p & 0xf0) >> 4);
*t++ = __wt_hex(*p & 0x0f);
}
*t++ = '\0';
to->size = WT_PTRDIFF(t, to->mem);
return (0);
}
/*
* __debug_bytes --
* Dump a single set of bytes.
*/
static int
__debug_bytes(WT_DBG *ds, const void *data_arg, size_t size)
{
size_t i;
const uint8_t *data;
u_char ch;
for (data = data_arg, i = 0; i < size; ++i, ++data) {
ch = data[0];
if (__wt_isprint(ch))
WT_RET(ds->f(ds, "%c", (int)ch));
else
WT_RET(__debug_hex_byte(ds, data[0]));
}
return (0);
}
/*
* __wt_json_unpack_char --
* Unpack a single character into JSON escaped format.
* Can be called with null buf for sizing.
*/
size_t
__wt_json_unpack_char(u_char ch, u_char *buf, size_t bufsz, bool force_unicode)
{
u_char abbrev;
if (!force_unicode) {
if (__wt_isprint(ch) && ch != '\\' && ch != '"') {
if (bufsz >= 1)
*buf = ch;
return (1);
} else {
abbrev = '\0';
switch (ch) {
case '\\':
case '"':
abbrev = ch;
break;
case '\f':
abbrev = 'f';
break;
case '\n':
abbrev = 'n';
break;
case '\r':
abbrev = 'r';
break;
case '\t':
abbrev = 't';
break;
}
if (abbrev != '\0') {
if (bufsz >= 2) {
*buf++ = '\\';
*buf = abbrev;
}
return (2);
}
}
}
if (bufsz >= 6) {
*buf++ = '\\';
*buf++ = 'u';
*buf++ = '0';
*buf++ = '0';
*buf++ = __wt_hex[(ch & 0xf0) >> 4];
*buf++ = __wt_hex[ch & 0x0f];
}
/*
* print_res --
* Write results file.
*/
void
print_res(int key, int value, int cnt)
{
static const char hex[] = "0123456789abcdef";
int ch;
for (; cnt > 0; ++key, ++value, --cnt) {
switch (page_type) { /* Print key */
case WT_PAGE_COL_FIX:
case WT_PAGE_COL_VAR:
break;
case WT_PAGE_ROW_LEAF:
fprintf(res_fp, "%010d KEY------\n", key);
break;
}
switch (page_type) { /* Print value */
case WT_PAGE_COL_FIX:
ch = value & 0x7f;
if (__wt_isprint((u_char)ch)) {
if (ch == '\\')
fputc('\\', res_fp);
fputc(ch, res_fp);
} else {
fputc('\\', res_fp);
fputc(hex[(ch & 0xf0) >> 4], res_fp);
fputc(hex[ch & 0x0f], res_fp);
}
fputc('\n', res_fp);
break;
case WT_PAGE_COL_VAR:
case WT_PAGE_ROW_LEAF:
fprintf(res_fp,
"%010d VALUE----\n", value_unique ? value : 37);
break;
}
}
}