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Add support for \x hex escapes in backend strings. Octal was already

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supported.  This follows the C standard escapes.
This commit is contained in:
Bruce Momjian
2005-06-02 01:23:08 +00:00
parent 202e6e73e6
commit 65537ac1b4
2 changed files with 20 additions and 14 deletions
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9
src/backend/parser/scan.l
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@@ -24,7 +24,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/scan.l,v 1.122 2005/05/26 01:24:29 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/scan.l,v 1.123 2005/06/02 01:23:08 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@@ -193,8 +193,9 @@ xnstart [nN]{quote}
xqstart {quote}
xqdouble {quote}{quote}
xqinside [^\\']+
xqescape [\\][^0-7]
xqescape [\\][^0-7x]
xqoctesc [\\][0-7]{1,3}
xqhexesc [\\]x[0-9A-Fa-f]{1,2}
/* $foo$ style quotes ("dollar quoting")
* The quoted string starts with $foo$ where "foo" is an optional string
@@ -435,6 +436,10 @@ other .
unsigned char c = strtoul(yytext+1, NULL, 8);
addlitchar(c);
}
<xq>{xqhexesc} {
unsigned char c = strtoul(yytext+2, NULL, 16);
addlitchar(c);
}
<xq>{quotecontinue} {
/* ignore */
}