scansup.c File Reference

#include "postgres.h"
#include <ctype.h>
#include "mb/pg_wchar.h"
#include "parser/scansup.h"
#include "utils/pg_locale.h"

Include dependency graph for scansup.c:

Go to the source code of this file.

Functions
char *	downcase_truncate_identifier (const char *ident, int len, bool warn)
char *	downcase_identifier (const char *ident, int len, bool warn, bool truncate)
void	truncate_identifier (char *ident, int len, bool warn)
bool	scanner_isspace (char ch)

Function Documentation

downcase_identifier()

char * downcase_identifier	(	const char *	ident,
		int	len,
		bool	warn,
		bool	truncate
	)

Definition at line 47 of file scansup.c.

{
    char       *result;
    size_t      needed pg_attribute_unused();
 
    /*
     * Preserves string length.
     *
     * NB: if we decide to support Unicode-aware identifier case folding, then
     * we need to account for a change in string length.
     */
    result = palloc(len + 1);
 
    needed = pg_downcase_ident(result, len + 1, ident, len);
    Assert(needed == len);
    Assert(result[len] == '\0');
 
    if (len >= NAMEDATALEN && truncate)
        truncate_identifier(result, len, warn);
 
    return result;
}

References Assert(), ident, len, NAMEDATALEN, palloc(), pg_attribute_unused, pg_downcase_ident(), and truncate_identifier().

Referenced by downcase_truncate_identifier(), and parse_ident().

downcase_truncate_identifier()

char * downcase_truncate_identifier	(	const char *	ident,
		int	len,
		bool	warn
	)

Definition at line 38 of file scansup.c.

{
    return downcase_identifier(ident, len, warn, true);
}

References downcase_identifier(), ident, and len.

Referenced by DecodeTimezoneName(), extract_date(), find_provider(), interval_part_common(), interval_trunc(), SplitIdentifierString(), time_part_common(), timestamp_part_common(), timestamp_trunc(), timestamptz_part_common(), timestamptz_trunc_internal(), and timetz_part_common().

scanner_isspace()

bool scanner_isspace

(

char

ch

)

Definition at line 105 of file scansup.c.

{
    /* This must match scan.l's list of {space} characters */
    if (ch == ' ' ||
        ch == '\t' ||
        ch == '\n' ||
        ch == '\r' ||
        ch == '\v' ||
        ch == '\f')
        return true;
    return false;
}

Referenced by array_in(), array_out(), check_uescapechar(), CleanQuerytext(), CreateSchemaCommand(), from_char_seq_search(), get_val(), parse_hstore(), parse_ident(), parseNameAndArgTypes(), ReadArrayDimensions(), ReadArrayToken(), SplitDirectoriesString(), SplitGUCList(), and SplitIdentifierString().

truncate_identifier()

void truncate_identifier	(	char *	ident,
		int	len,
		bool	warn
	)

Definition at line 81 of file scansup.c.

{
    if (len >= NAMEDATALEN)
    {
        len = pg_mbcliplen(ident, len, NAMEDATALEN - 1);
        if (warn)
            ereport(NOTICE,
                    (errcode(ERRCODE_NAME_TOO_LONG),
                     errmsg("identifier \"%s\" will be truncated to \"%.*s\"",
                            ident, len, ident)));
        ident[len] = '\0';
    }
}

References ereport, errcode(), errmsg(), ident, len, NAMEDATALEN, NOTICE, and pg_mbcliplen().

Referenced by base_yylex(), createNewConnection(), deleteConnection(), downcase_identifier(), get_connect_string(), getConnectionByName(), parse_and_validate_value(), and SplitIdentifierString().