/*
* __wt_struct_reformat --
* Given a table and a list of columns (which could be values in a column
* group or index keys), calculate the resulting new format string.
* The result will be appended to the format buffer.
*/
int
__wt_struct_reformat(WT_SESSION_IMPL *session, WT_TABLE *table,
const char *columns, size_t len, const char *extra_cols, int value_only,
WT_ITEM *format)
{
WT_CONFIG config;
WT_CONFIG_ITEM k, next_k, next_v;
WT_DECL_RET;
WT_PACK_VALUE pv;
int have_next;
WT_CLEAR(pv); /* -Wuninitialized */
WT_RET(__wt_config_initn(session, &config, columns, len));
WT_RET(__wt_config_next(&config, &next_k, &next_v));
do {
k = next_k;
ret = __wt_config_next(&config, &next_k, &next_v);
if (ret != 0 && ret != WT_NOTFOUND)
return (ret);
have_next = (ret == 0);
if (!have_next && extra_cols != NULL) {
WT_RET(__wt_config_init(session, &config, extra_cols));
WT_RET(__wt_config_next(&config, &next_k, &next_v));
have_next = 1;
extra_cols = NULL;
}
if ((ret = __find_column_format(session,
table, &k, value_only, &pv)) != 0) {
if (value_only && ret == EINVAL)
WT_RET_MSG(session, EINVAL,
"A column group cannot store key column "
"'%.*s' in its value", (int)k.len, k.str);
WT_RET_MSG(session, EINVAL,
"Column '%.*s' not found", (int)k.len, k.str);
}
/*
* Check whether we're moving an unsized WT_ITEM from the end
* to the middle, or vice-versa. This determines whether the
* size needs to be prepended. This is the only case where the
* destination size can be larger than the source size.
*/
if (pv.type == 'u' && !pv.havesize && have_next)
pv.type = 'U';
else if (pv.type == 'U' && !have_next)
pv.type = 'u';
if (pv.havesize)
WT_RET(__wt_buf_catfmt(
session, format, "%d%c", (int)pv.size, pv.type));
else
WT_RET(__wt_buf_catfmt(session, format, "%c", pv.type));
} while (have_next);
return (0);
}
/*
* __wt_struct_reformat --
* Given a table and a list of columns (which could be values in a column
* group or index keys), calculate the resulting new format string.
* The result will be appended to the format buffer.
*/
int
__wt_struct_reformat(WT_SESSION_IMPL *session, WT_TABLE *table,
const char *columns, size_t len, const char *extra_cols, bool value_only,
WT_ITEM *format)
{
WT_CONFIG config;
WT_CONFIG_ITEM k, next_k, next_v;
WT_DECL_PACK_VALUE(pv);
WT_DECL_RET;
bool have_next;
__wt_config_initn(session, &config, columns, len);
/*
* If an empty column list is specified, this will fail with
* WT_NOTFOUND, that's okay.
*/
WT_RET_NOTFOUND_OK(ret = __wt_config_next(&config, &next_k, &next_v));
if (ret == WT_NOTFOUND) {
if (extra_cols != NULL) {
__wt_config_init(session, &config, extra_cols);
WT_RET(__wt_config_next(&config, &next_k, &next_v));
extra_cols = NULL;
} else if (format->size == 0) {
WT_RET(__wt_buf_set(session, format, "", 1));
return (0);
}
}
do {
k = next_k;
ret = __wt_config_next(&config, &next_k, &next_v);
if (ret != 0 && ret != WT_NOTFOUND)
return (ret);
have_next = ret == 0;
if (!have_next && extra_cols != NULL) {
__wt_config_init(session, &config, extra_cols);
WT_RET(__wt_config_next(&config, &next_k, &next_v));
have_next = true;
extra_cols = NULL;
}
if ((ret = __find_column_format(session,
table, &k, value_only, &pv)) != 0) {
if (value_only && ret == EINVAL)
WT_RET_MSG(session, EINVAL,
"A column group cannot store key column "
"'%.*s' in its value", (int)k.len, k.str);
WT_RET_MSG(session, EINVAL,
"Column '%.*s' not found", (int)k.len, k.str);
}
/*
* Check whether we're moving an unsized WT_ITEM from the end
* to the middle, or vice-versa. This determines whether the
* size needs to be prepended. This is the only case where the
* destination size can be larger than the source size.
*/
if (pv.type == 'u' && !pv.havesize && have_next)
pv.type = 'U';
else if (pv.type == 'U' && !have_next)
pv.type = 'u';
if (pv.havesize)
WT_RET(__wt_buf_catfmt(session,
format, "%" PRIu32 "%c", pv.size, pv.type));
else
WT_RET(__wt_buf_catfmt(session, format, "%c", pv.type));
} while (have_next);
return (0);
}
