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Diffstat (limited to 'src/backend/utils/adt/quote.c')
| -rw-r--r-- | src/backend/utils/adt/quote.c | 289 |
1 files changed, 0 insertions, 289 deletions
diff --git a/src/backend/utils/adt/quote.c b/src/backend/utils/adt/quote.c deleted file mode 100644 index 537e97a50ee..00000000000 --- a/src/backend/utils/adt/quote.c +++ /dev/null @@ -1,289 +0,0 @@ -/*------------------------------------------------------------------------- - * - * quote.c - * Functions for quoting identifiers and literals - * - * Portions Copyright (c) 2000, PostgreSQL Global Development Group - * - * - * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/quote.c,v 1.7 2002/04/04 04:25:49 momjian Exp $ - * - *------------------------------------------------------------------------- - */ -#include <ctype.h> - -#include "postgres.h" - -#include "mb/pg_wchar.h" -#include "utils/builtins.h" - - -static bool quote_ident_required(text *iptr); -static text *do_quote_ident(text *iptr); -static text *do_quote_literal(text *iptr); - - -/* - * quote_ident - - * returns a properly quoted identifier - */ -Datum -quote_ident(PG_FUNCTION_ARGS) -{ - text *t = PG_GETARG_TEXT_P(0); - text *result; - - if (quote_ident_required(t)) - result = do_quote_ident(t); - else - { - result = (text *) palloc(VARSIZE(t)); - memcpy(result, t, VARSIZE(t)); - } - - PG_FREE_IF_COPY(t, 0); - - PG_RETURN_TEXT_P(result); -} - -/* - * quote_literal - - * returns a properly quoted literal - */ -Datum -quote_literal(PG_FUNCTION_ARGS) -{ - text *t = PG_GETARG_TEXT_P(0); - text *result; - - result = do_quote_literal(t); - - PG_FREE_IF_COPY(t, 0); - - PG_RETURN_TEXT_P(result); -} - - -/* - * MULTIBYTE dependant internal functions follow - * - */ - - -#ifndef MULTIBYTE - -/* Check if a given identifier needs quoting */ -static bool -quote_ident_required(text *iptr) -{ - char *cp; - char *ep; - - cp = VARDATA(iptr); - ep = VARDATA(iptr) + VARSIZE(iptr) - VARHDRSZ; - - if (cp >= ep) - return true; - - if (!(*cp == '_' || (*cp >= 'a' && *cp <= 'z'))) - return true; - - while ((++cp) < ep) - { - if (*cp >= 'a' && *cp <= 'z') - continue; - if (*cp >= '0' && *cp <= '9') - continue; - if (*cp == '_') - continue; - - return true; - } - - return false; -} - -/* Return a properly quoted identifier */ -static text * -do_quote_ident(text *iptr) -{ - text *result; - char *cp1; - char *cp2; - int len; - - len = VARSIZE(iptr) - VARHDRSZ; - result = (text *) palloc(len * 2 + VARHDRSZ + 2); - - cp1 = VARDATA(iptr); - cp2 = VARDATA(result); - - *cp2++ = '"'; - while (len-- > 0) - { - if (*cp1 == '"') - *cp2++ = '"'; - *cp2++ = *cp1++; - } - *cp2++ = '"'; - - VARATT_SIZEP(result) = cp2 - ((char *) result); - - return result; -} - -/* Return a properly quoted literal value */ -static text * -do_quote_literal(text *lptr) -{ - text *result; - char *cp1; - char *cp2; - int len; - - len = VARSIZE(lptr) - VARHDRSZ; - result = (text *) palloc(len * 2 + VARHDRSZ + 2); - - cp1 = VARDATA(lptr); - cp2 = VARDATA(result); - - *cp2++ = '\''; - while (len-- > 0) - { - if (*cp1 == '\'') - *cp2++ = '\''; - if (*cp1 == '\\') - *cp2++ = '\\'; - *cp2++ = *cp1++; - } - *cp2++ = '\''; - - VARATT_SIZEP(result) = cp2 - ((char *) result); - - return result; -} - -#else - -/* Check if a given identifier needs quoting (MULTIBYTE version) */ -static bool -quote_ident_required(text *iptr) -{ - char *cp; - char *ep; - - cp = VARDATA(iptr); - ep = VARDATA(iptr) + VARSIZE(iptr) - VARHDRSZ; - - if (cp >= ep) - return true; - - if (pg_mblen(cp) != 1) - return true; - if (!(*cp == '_' || (*cp >= 'a' && *cp <= 'z'))) - return true; - - while ((++cp) < ep) - { - if (pg_mblen(cp) != 1) - return true; - - if (*cp >= 'a' && *cp <= 'z') - continue; - if (*cp >= '0' && *cp <= '9') - continue; - if (*cp == '_') - continue; - - return true; - } - - return false; -} - -/* Return a properly quoted identifier (MULTIBYTE version) */ -static text * -do_quote_ident(text *iptr) -{ - text *result; - char *cp1; - char *cp2; - int len; - int wl; - - len = VARSIZE(iptr) - VARHDRSZ; - result = (text *) palloc(len * 2 + VARHDRSZ + 2); - - cp1 = VARDATA(iptr); - cp2 = VARDATA(result); - - *cp2++ = '"'; - while (len > 0) - { - if ((wl = pg_mblen(cp1)) != 1) - { - len -= wl; - - while (wl-- > 0) - *cp2++ = *cp1++; - continue; - } - - if (*cp1 == '"') - *cp2++ = '"'; - *cp2++ = *cp1++; - - len--; - } - *cp2++ = '"'; - - VARATT_SIZEP(result) = cp2 - ((char *) result); - - return result; -} - -/* Return a properly quoted literal value (MULTIBYTE version) */ -static text * -do_quote_literal(text *lptr) -{ - text *result; - char *cp1; - char *cp2; - int len; - int wl; - - len = VARSIZE(lptr) - VARHDRSZ; - result = (text *) palloc(len * 2 + VARHDRSZ + 2); - - cp1 = VARDATA(lptr); - cp2 = VARDATA(result); - - *cp2++ = '\''; - while (len > 0) - { - if ((wl = pg_mblen(cp1)) != 1) - { - len -= wl; - - while (wl-- > 0) - *cp2++ = *cp1++; - continue; - } - - if (*cp1 == '\'') - *cp2++ = '\''; - if (*cp1 == '\\') - *cp2++ = '\\'; - *cp2++ = *cp1++; - - len--; - } - *cp2++ = '\''; - - VARATT_SIZEP(result) = cp2 - ((char *) result); - - return result; -} - -#endif |