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52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*-------------------------------------------------------------------------
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*
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* quotes.c
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* string quoting and escaping functions
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*
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* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* src/port/quotes.c
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*
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*-------------------------------------------------------------------------
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*/
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#include "c.h"
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/*
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* Escape (by doubling) any single quotes or backslashes in given string
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*
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* Note: this is used to process postgresql.conf entries and to quote
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* string literals in pg_basebackup for creating recovery.conf.
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* Since postgresql.conf strings are defined to treat backslashes as escapes,
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* we have to double backslashes here.
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*
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* Since this function is only used for parsing or creating configuration
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* files, we do not care about encoding considerations.
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*
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* Returns a malloced() string that it's the responsibility of the caller
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* to free.
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*/
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char *
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escape_single_quotes_ascii(const char *src)
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{
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int len = strlen(src),
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i,
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j;
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char *result = malloc(len * 2 + 1);
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if (!result)
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return NULL;
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for (i = 0, j = 0; i < len; i++)
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{
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if (SQL_STR_DOUBLE(src[i], true))
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result[j++] = src[i];
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result[j++] = src[i];
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}
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result[j] = '\0';
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return result;
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}
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