#include "postgres.h"
#include "utils/builtins.h"
#include "varatt.h"

Include dependency graph for quote.c:

Functions
Datum	quote_ident (PG_FUNCTION_ARGS)

static size_t	quote_literal_internal (char dst, const char src, size_t len)

Datum	quote_literal (PG_FUNCTION_ARGS)

char *	quote_literal_cstr (const char *rawstr)

Datum	quote_nullable (PG_FUNCTION_ARGS)

Function Documentation

◆ quote_ident()

Datum quote_ident ( PG_FUNCTION_ARGS )

Definition at line 25 of file quote.c.

{
    text       *t = PG_GETARG_TEXT_PP(0);
    const char *qstr;
    char       *str;
 
    str = text_to_cstring(t);
    qstr = quote_identifier(str);
    PG_RETURN_TEXT_P(cstring_to_text(qstr));
}

References cstring_to_text(), fb(), PG_GETARG_TEXT_PP, PG_RETURN_TEXT_P, quote_identifier(), str, and text_to_cstring().

Referenced by quote_ident_cstr().

◆ quote_literal()

Datum quote_literal ( PG_FUNCTION_ARGS )

Definition at line 76 of file quote.c.

{
    text       *t = PG_GETARG_TEXT_PP(0);
    text       *result;
    char       *cp1;
    char       *cp2;
    int         len;
 
    len = VARSIZE_ANY_EXHDR(t);
    /* We make a worst-case result area; wasting a little space is OK */
    result = (text *) palloc(len * 2 + 3 + VARHDRSZ);
 
    cp1 = VARDATA_ANY(t);
    cp2 = VARDATA(result);
 
    SET_VARSIZE(result, VARHDRSZ + quote_literal_internal(cp2, cp1, len));
 
    PG_RETURN_TEXT_P(result);
}

References fb(), len, palloc(), PG_GETARG_TEXT_PP, PG_RETURN_TEXT_P, quote_literal_internal(), SET_VARSIZE(), VARDATA(), VARDATA_ANY(), VARHDRSZ, and VARSIZE_ANY_EXHDR().

Referenced by GetPublicationsStr(), and quote_nullable().

◆ quote_literal_cstr()

char * quote_literal_cstr ( const char * rawstr )

Definition at line 101 of file quote.c.

{
    char       *result;
    int         len;
    int         newlen;
 
    len = strlen(rawstr);
    /* We make a worst-case result area; wasting a little space is OK */
    result = palloc(
                    (len * 2)   /* doubling for every character if each one is
                                 * a quote */
                    + 3         /* two outer quotes + possibly 'E' if needed */
                    + 1         /* null terminator */
        );
 
    newlen = quote_literal_internal(result, rawstr, len);
    result[newlen] = '\0';
 
    return result;
}

References fb(), len, palloc(), and quote_literal_internal().

Referenced by build_tuplestore_recursively(), copy_sequences(), fetch_remote_slots(), fetch_remote_table_info(), get_sql_delete(), get_sql_insert(), get_sql_update(), get_tuple_of_interest(), GetPublicationsStr(), pg_decode_commit_prepared_txn(), pg_decode_prepare_txn(), pg_decode_rollback_prepared_txn(), pg_decode_stream_prepare(), PLy_quote_literal(), PLy_quote_nullable(), text_format_string_conversion(), and validate_remote_info().

◆ quote_literal_internal()

static size_t quote_literal_internal	(	char *	dst,
		const char *	src,
		size_t	len
	)

static

Definition at line 45 of file quote.c.

{
    const char *s;
    char       *savedst = dst;
 
    for (s = src; s < src + len; s++)
    {
        if (*s == '\\')
        {
            *dst++ = ESCAPE_STRING_SYNTAX;
            break;
        }
    }
 
    *dst++ = '\'';
    while (len-- > 0)
    {
        if (SQL_STR_DOUBLE(*src, true))
            *dst++ = *src;
        *dst++ = *src++;
    }
    *dst++ = '\'';
 
    return dst - savedst;
}

References ESCAPE_STRING_SYNTAX, fb(), len, and SQL_STR_DOUBLE.

Referenced by quote_literal(), and quote_literal_cstr().

◆ quote_nullable()

Datum quote_nullable ( PG_FUNCTION_ARGS )

Definition at line 128 of file quote.c.

{
    if (PG_ARGISNULL(0))
        PG_RETURN_TEXT_P(cstring_to_text("NULL"));
    else
        PG_RETURN_DATUM(DirectFunctionCall1(quote_literal,
                                            PG_GETARG_DATUM(0)));
}