52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
|
|
*
|
|
* quotes.c
|
|
* string quoting and escaping functions
|
|
*
|
|
* Portions Copyright (c) 1996-2024, PostgreSQL Global Development Group
|
|
* Portions Copyright (c) 1994, Regents of the University of California
|
|
*
|
|
*
|
|
* IDENTIFICATION
|
|
* src/port/quotes.c
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
#include "c.h"
|
|
|
|
/*
|
|
* Escape (by doubling) any single quotes or backslashes in given string
|
|
*
|
|
* Note: this is used to process postgresql.conf entries and to quote
|
|
* string literals in pg_basebackup for writing the recovery configuration.
|
|
* Since postgresql.conf strings are defined to treat backslashes as escapes,
|
|
* we have to double backslashes here.
|
|
*
|
|
* Since this function is only used for parsing or creating configuration
|
|
* files, we do not care about encoding considerations.
|
|
*
|
|
* Returns a malloced() string that it's the responsibility of the caller
|
|
* to free.
|
|
*/
|
|
char *
|
|
escape_single_quotes_ascii(const char *src)
|
|
{
|
|
int len = strlen(src),
|
|
i,
|
|
j;
|
|
char *result = malloc(len * 2 + 1);
|
|
|
|
if (!result)
|
|
return NULL;
|
|
|
|
for (i = 0, j = 0; i < len; i++)
|
|
{
|
|
if (SQL_STR_DOUBLE(src[i], true))
|
|
result[j++] = src[i];
|
|
result[j++] = src[i];
|
|
}
|
|
result[j] = '\0';
|
|
return result;
|
|
}
|