#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(), 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 78 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 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 get_publications_str(), and quote_nullable().

◆ quote_literal_cstr()

char* quote_literal_cstr ( const char * rawstr )

Definition at line 103 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 + 3 + 1);
  
     newlen = quote_literal_internal(result, rawstr, len);
     result[newlen] = '\0';
  
     return result;
 }

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

Referenced by build_tuplestore_recursively(), fetch_remote_table_info(), get_publications_str(), get_sql_delete(), get_sql_insert(), get_sql_update(), get_tuple_of_interest(), 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 47 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, len, and SQL_STR_DOUBLE.

Referenced by quote_literal(), and quote_literal_cstr().

◆ quote_nullable()

Datum quote_nullable ( PG_FUNCTION_ARGS )

Definition at line 125 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)));
 }