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Add E'' syntax so eventually normal strings can treat backslashes

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literally.

Add GUC variables:

        "escape_string_warning" - warn about backslashes in non-E strings
        "escape_string_syntax" - supports E'' syntax?
        "standard_compliant_strings" - treats backslashes literally in ''

Update code to use E'' when escapes are used.
This commit is contained in:
Bruce Momjian
2005-06-26 03:04:37 +00:00
parent c96375a39b
commit bb3cce4ec9
30 changed files with 242 additions and 90 deletions
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35
src/backend/utils/misc/guc.c
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@ -10,7 +10,7 @@
* Written by Peter Eisentraut <peter_e@gmx.net>.
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.268 2005/06/17 22:32:47 tgl Exp $
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.269 2005/06/26 03:03:41 momjian Exp $
*
*--------------------------------------------------------------------
*/
@ -189,7 +189,9 @@ static int max_function_args;
static int max_index_keys;
static int max_identifier_length;
static int block_size;
static bool integer_datetimes;
static bool integer_datetimes;
static bool escape_string_syntax;
static bool standard_compliant_strings;
/* should be static, but commands/variable.c needs to get at it */
char *session_authorization_string;
@ -873,6 +875,35 @@ static struct config_bool ConfigureNamesBool[] =
false, NULL, NULL
},
{
{"escape_string_warning", PGC_USERSET, COMPAT_OPTIONS_PREVIOUS,
gettext_noop("Warn about backslash escapes in ordinary, non-escape-syntax strings."),
NULL
},
&escape_string_warning,
false, NULL, NULL
},
{
{"escape_string_syntax", PGC_INTERNAL, PRESET_OPTIONS,
gettext_noop("Escape string syntax (E'') is supported."),
NULL,
GUC_REPORT | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
},
&escape_string_syntax,
true, NULL, NULL
},
{
{"standard_compliant_strings", PGC_INTERNAL, PRESET_OPTIONS,
gettext_noop("'' strings treat backslashes literally."),
NULL,
GUC_REPORT | GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
},
&standard_compliant_strings,
false, NULL, NULL
},
/* End-of-list marker */
{
{NULL, 0, 0, NULL, NULL}, NULL, false, NULL, NULL