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Merge pull request #123 from abidbodal/add-readonly-flag-sqlite3

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Add an option to env:connect in sqlite3
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Tomás Guisasola 2020-09-08 08:52:31 -03:00 committed by GitHub
commit 14762f35c3
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4 changed files with 30 additions and 9 deletions
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5
doc/br/manual.html
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@ -382,9 +382,10 @@ o driver Oracle ainda oferece uma funcionalidade adicional:</p>
<p>Al&eacute;m das funcionalidades b&aacute;sicas oferecidas por todos os drivers,
o driver para SQLite3 ainda oferece uma funcionalidade adicional:</p>
<dt><strong><code>env:connect(sourcename[,locktimeout])</code></strong></dt>
<dt><strong><code>env:connect(sourcename[,locktimeout,readOnlyMode])</code></strong></dt>
<dd>No driver para SQLite3, este método tem mais um parâmetro opcional que indica
a quantidade de milissegundos para esperar por uma trava de escrita no banco de dados, se ela não for obtida de imediato.<br/>
a quantidade de milissegundos para esperar por uma trava de escrita no banco de dados, se ela não for obtida de imediato.
TODO: translate me : To connect in readOnlyMode, set readOnlyMode to true<br/>
Veja tamb&eacute;m: <a href="#environment_object">ambiente</a><br/>
Retorna: uma <a href="#connection_object">conex&atilde;o</a></dd>

5
doc/fr/manual.html
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@ -404,9 +404,10 @@ the Oracle driver also offers this extra feature:</p>
<p>Besides the basic functionality provided by all drivers,
the SQLite3 driver also offers this extra feature:</p>
<dt><strong><code>env:connect(sourcename[,locktimeout])</code></strong></dt>
<dt><strong><code>env:connect(sourcename[,locktimeout, readOnlyMode])</code></strong></dt>
<dd>In the SQLite3 driver, this method adds an optional parameter
that indicate the amount of milisseconds to wait for a write lock if one cannot be obtained immediately.<br/>
that indicate the amount of milisseconds to wait for a write lock if one cannot be obtained immediately.
To connect in readOnlyMode, set readOnlyMode to true<br/>
See also: <a href="#environment_object">environment objects</a><br/>
Returns: a <a href="#connection_object">connection object</a></dd>

5
doc/us/manual.html
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@ -413,9 +413,10 @@ the Oracle driver also offers this extra feature:</p>
<p>Besides the basic functionality provided by all drivers,
the SQLite3 driver also offers this extra feature:</p>
<dt><strong><code>env:connect(sourcename[,locktimeout])</code></strong></dt>
<dt><strong><code>env:connect(sourcename[,locktimeout,readOnlyMode])</code></strong></dt>
<dd>In the SQLite3 driver, this method adds an optional parameter
that indicate the amount of milliseconds to wait for a write lock if one cannot be obtained immediately.<br/>
that indicate the amount of milliseconds to wait for a write lock if one cannot be obtained immediately.
To connect in readOnlyMode, set readOnlyMode to true.<br/>
See also: <a href="#environment_object">environment objects</a><br/>
Returns: a <a href="#connection_object">connection object</a></dd>

24
src/ls_sqlite3.c
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@ -7,6 +7,7 @@
*/
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
@ -549,19 +550,36 @@ static int env_connect(lua_State *L)
sqlite3 *conn;
const char *errmsg;
int res;
bool readOnlyMode = false;
int mode;
getenvironment(L); /* validate environment */
sourcename = luaL_checkstring(L, 2);
if (lua_isboolean(L, 4)) {
if (lua_toboolean(L, 4)) {
readOnlyMode = true;
}
}
sourcename = luaL_checkstring(L, 2);
#if SQLITE_VERSION_NUMBER > 3006013
if (strstr(sourcename, ":memory:")) /* TODO: rework this and get/add param 'flag' for sqlite3_open_v2 - see TODO below */
{
res = sqlite3_open_v2(sourcename, &conn, SQLITE_OPEN_READWRITE | SQLITE_OPEN_MEMORY, NULL);
if (readOnlyMode) {
mode = SQLITE_OPEN_READONLY | SQLITE_OPEN_MEMORY;
} else {
mode = SQLITE_OPEN_READWRITE | SQLITE_OPEN_MEMORY;
}
}
else
{
res = sqlite3_open_v2(sourcename, &conn, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL);
if (readOnlyMode) {
mode = SQLITE_OPEN_READONLY;
} else {
mode = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE;
}
}
res = sqlite3_open_v2(sourcename, &conn, mode, NULL);
#else
res = sqlite3_open(sourcename, &conn);
#endif