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Use view for filelist instead of separate table

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This commit is contained in:
chme
2015-02-14 08:46:21 +01:00
parent aa0abc1664
commit df5b0f779a
4 changed files with 218 additions and 335 deletions
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124
sqlext/sqlext.c
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@@ -244,6 +244,112 @@ sqlext_daap_unicode_xcollation(void *notused, int llen, const void *left, int rl
return rpp;
}
static void
sqlext_daap_substring_xfunc(sqlite3_context *pv, int n, sqlite3_value **ppv)
{
const unsigned char *s1;
const unsigned char *s2;
int index;
char *start;
char *end;
char *result;
if (n < 2)
{
sqlite3_result_error(pv, "daap_substring() requires at least 2 parameters", -1);
return;
}
if (SQLITE_TEXT != sqlite3_value_type(ppv[0]) || SQLITE_TEXT != sqlite3_value_type(ppv[1]))
{
sqlite3_result_null(pv);
return;
}
s1 = sqlite3_value_text(ppv[0]);
s2 = sqlite3_value_text(ppv[1]);
if (n > 2)
index = sqlite3_value_int(ppv[2]);
else
index = 0;
if (strlen((char *) s1) < index)
{
sqlite3_result_null(pv);
return;
}
start = (char *) s1 + index;
end = strstr(start, (char *) s2);
if (!end)
{
sqlite3_result_null(pv);
return;
}
result = sqlite3_malloc(end - (char *) s1 + 1);
if (!result)
{
sqlite3_result_error_nomem(pv);
return;
}
strncpy((char*) result, (char*) s1, end - (char *) s1);
*(result + (end - (char *) s1)) = '\0';
sqlite3_result_text(pv, (char*) result, -1, SQLITE_TRANSIENT);
sqlite3_free(result);
}
static void
sqlext_daap_charindex_xfunc(sqlite3_context *pv, int n, sqlite3_value **ppv)
{
const unsigned char *s1;
const unsigned char *s2;
int index;
char *start;
char *end;
if (n < 2)
{
sqlite3_result_error(pv, "daap_charindex() requires at least 2 parameters", -1);
return;
}
if (SQLITE_TEXT != sqlite3_value_type(ppv[0]) || SQLITE_TEXT != sqlite3_value_type(ppv[1]))
{
sqlite3_result_int(pv, -1);
return;
}
s1 = sqlite3_value_text(ppv[0]);
s2 = sqlite3_value_text(ppv[1]);
if (n > 2)
index = sqlite3_value_int(ppv[2]);
else
index = 0;
if (strlen((char *) s1) < index)
{
sqlite3_result_int(pv, -1);
return;
}
start = (char *) s1 + index;
end = strstr(start, (char *) s2);
if (!end)
{
sqlite3_result_int(pv, -1);
return;
}
sqlite3_result_int(pv, end - (char *) s1);
}
int
sqlite3_extension_init(sqlite3 *db, char **pzErrMsg, const sqlite3_api_routines *pApi)
@@ -269,5 +375,23 @@ sqlite3_extension_init(sqlite3 *db, char **pzErrMsg, const sqlite3_api_routines
return -1;
}
ret = sqlite3_create_function(db, "daap_substring", 3, SQLITE_UTF8, NULL, sqlext_daap_substring_xfunc, NULL, NULL);
if (ret != SQLITE_OK)
{
if (pzErrMsg)
*pzErrMsg = sqlite3_mprintf("Could not create daap_substring function: %s\n", sqlite3_errmsg(db));
return -1;
}
ret = sqlite3_create_function(db, "daap_charindex", 3, SQLITE_UTF8, NULL, sqlext_daap_charindex_xfunc, NULL, NULL);
if (ret != SQLITE_OK)
{
if (pzErrMsg)
*pzErrMsg = sqlite3_mprintf("Could not create daap_charindex function: %s\n", sqlite3_errmsg(db));
return -1;
}
return 0;
}