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-rw-r--r--src/backend/regex/utils.c404
1 files changed, 0 insertions, 404 deletions
diff --git a/src/backend/regex/utils.c b/src/backend/regex/utils.c
deleted file mode 100644
index 0f8844f41e3..00000000000
--- a/src/backend/regex/utils.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- * misc conversion functions between pg_wchar and other encodings.
- * Tatsuo Ishii
- * $Id: utils.c,v 1.4 1998/07/18 18:34:08 momjian Exp $
- */
-#include <regex/pg_wchar.h>
-
-/*
- * conversion to pg_wchar is done by "table driven."
- * to add an encoding support, define mb2wchar_with_len(), mblen()
- * for the particular encoding. Note that if the encoding is only
- * supported in the client, you don't need to define
- * mb2wchar_with_len() function (SJIS is the case).
- */
-typedef struct {
- void (*mb2wchar_with_len)(); /* convert a multi-byte string to a wchar */
- int (*mblen)(); /* returns the length of a multi-byte word */
-} pg_wchar_tbl;
-
-static void pg_euc2wchar_with_len
-(const unsigned char *from, pg_wchar *to, int len)
-{
- while (*from && len > 0) {
- if (*from == SS2) {
- from++;
- len--;
- *to = 0xff & *from++;
- len--;
- } else if (*from == SS3) {
- from++;
- *to = *from++ << 8;
- *to |= 0x3f & *from++;
- len -= 3;
- } else if (*from & 0x80) {
- *to = *from++ << 8;
- *to |= *from++;
- len -= 2;
- } else {
- *to = *from++;
- len--;
- }
- to++;
- }
- *to = 0;
-}
-
-static int pg_euc_mblen(const unsigned char *s)
-{
- int len;
-
- if (*s == SS2) {
- len = 2;
- } else if (*s == SS3) {
- len = 3;
- } else if (*s & 0x80) {
- len = 2;
- } else {
- len = 1;
- }
- return(len);
-}
-
-/*
- * EUC_JP
- */
-static void pg_eucjp2wchar_with_len
-(const unsigned char *from, pg_wchar *to, int len)
-{
- pg_euc2wchar_with_len(from,to,len);
-}
-
-static int pg_eucjp_mblen(const unsigned char *s)
-{
- return(pg_euc_mblen(s));
-}
-
-/*
- * EUC_KR
- */
-static void pg_euckr2wchar_with_len
-(const unsigned char *from, pg_wchar *to, int len)
-{
- pg_euc2wchar_with_len(from,to,len);
-}
-
-static int pg_euckr_mblen(const unsigned char *s)
-{
- return(pg_euc_mblen(s));
-}
-
-/*
- * EUC_CN
- */
-static void pg_euccn2wchar_with_len
-(const unsigned char *from, pg_wchar *to, int len)
-{
- while (*from && len > 0) {
- if (*from == SS2) {
- from++;
- len--;
- *to = 0x3f00 & (*from++ << 8);
- *to = *from++;
- len -= 2;
- } else if (*from == SS3) {
- from++;
- *to = *from++ << 8;
- *to |= 0x3f & *from++;
- len -= 3;
- } else if (*from & 0x80) {
- *to = *from++ << 8;
- *to |= *from++;
- len -= 2;
- } else {
- *to = *from++;
- len--;
- }
- to++;
- }
- *to = 0;
-}
-
-static int pg_euccn_mblen(const unsigned char *s)
-{
- int len;
-
- if (*s == SS2) {
- len = 3;
- } else if (*s == SS3) {
- len = 3;
- } else if (*s & 0x80) {
- len = 2;
- } else {
- len = 1;
- }
- return(len);
-}
-
-/*
- * EUC_TW
- */
-static void pg_euctw2wchar_with_len
-(const unsigned char *from, pg_wchar *to, int len)
-{
- while (*from && len > 0) {
- if (*from == SS2) {
- from++;
- len--;
- *to = *from++ << 16;
- *to |= *from++ << 8;
- *to |= *from++;
- len -= 3;
- } else if (*from == SS3) {
- from++;
- *to = *from++ << 8;
- *to |= 0x3f & *from++;
- len -= 3;
- } else if (*from & 0x80) {
- *to = *from++ << 8;
- *to |= *from++;
- len -= 2;
- } else {
- *to = *from++;
- len--;
- }
- to++;
- }
- *to = 0;
-}
-
-static int pg_euctw_mblen(const unsigned char *s)
-{
- int len;
-
- if (*s == SS2) {
- len = 4;
- } else if (*s == SS3) {
- len = 3;
- } else if (*s & 0x80) {
- len = 2;
- } else {
- len = 1;
- }
- return(len);
-}
-
-/*
- * convert UTF-8 to pg_wchar (UCS-2)
- * caller should allocate enough space for "to"
- * len: length of from.
- * "from" not necessarily null terminated.
- */
-static void pg_utf2wchar_with_len(const unsigned char *from, pg_wchar *to, int len)
-{
- unsigned char c1,c2,c3;
- while (*from && len > 0) {
- if ((*from & 0x80) == 0) {
- *to = *from++;
- len--;
- } else if ((*from & 0xe0) == 0xc0) {
- c1 = *from++ & 0x1f;
- c2 = *from++ & 0x3f;
- len -= 2;
- *to = c1 << 6;
- *to |= c2;
- } else if ((*from & 0xe0) == 0xe0) {
- c1 = *from++ & 0x0f;
- c2 = *from++ & 0x3f;
- c3 = *from++ & 0x3f;
- len -= 3;
- *to = c1 << 12;
- *to |= c2 << 6;
- *to |= c3;
- }
- to++;
- }
- *to = 0;
-}
-
-static int pg_utf_mblen(const unsigned char *s)
-{
- int len = 1;
-
- if ((*s & 0x80) == 0) {
- len = 1;
- } else if ((*s & 0xe0) == 0xc0) {
- len = 2;
- } else if ((*s & 0xe0) == 0xe0) {
- len = 3;
- }
- return(len);
-}
-
-/*
- * convert mule internal code to pg_wchar
- * caller should allocate enough space for "to"
- * len: length of from.
- * "from" not necessarily null terminated.
- */
-static void pg_mule2wchar_with_len(const unsigned char *from, pg_wchar *to, int len)
-{
- while (*from && len > 0) {
- if (IS_LC1(*from)) {
- *to = *from++ << 16;
- *to |= *from++;
- len -= 2;
- } else if (IS_LCPRV1(*from)) {
- from++;
- *to = *from++ << 16;
- *to |= *from++;
- len -= 3;
- } else if (IS_LC2(*from)) {
- *to = *from++ << 16;
- *to |= *from++ << 8;
- *to |= *from++;
- len -= 3;
- } else if (IS_LCPRV2(*from)) {
- from++;
- *to = *from++ << 16;
- *to |= *from++ << 8;
- *to |= *from++;
- len -= 4;
- } else { /* assume ASCII */
- *to = (unsigned char)*from++;
- len--;
- }
- to++;
- }
- *to = 0;
-}
-
-static int pg_mule_mblen(const unsigned char *s)
-{
- int len;
-
- if (IS_LC1(*s)) {
- len = 2;
- } else if (IS_LCPRV1(*s)) {
- len = 3;
- } else if (IS_LC2(*s)) {
- len = 3;
- } else if (IS_LCPRV2(*s)) {
- len = 4;
- } else { /* assume ASCII */
- len = 1;
- }
- return(len);
-}
-
-/*
- * ISO8859-1
- */
-static void pg_latin12wchar_with_len(const unsigned char *from, pg_wchar *to, int len)
-{
- while (*from && len-- > 0) {
- *to++ = *from++;
- }
- *to = 0;
-}
-
-static int pg_latin1_mblen(const unsigned char *s)
-{
- return(1);
-}
-
-/*
- * SJIS
- */
-static int pg_sjis_mblen(const unsigned char *s)
-{
- int len;
-
- if (*s >= 0xa1 && *s <= 0xdf) { /* 1 byte kana? */
- len = 1;
- } else if (*s > 0x7f) { /* kanji? */
- len = 2;
- } else { /* should be ASCII */
- len = 1;
- }
- return(len);
-}
-
-static pg_wchar_tbl pg_wchar_table[] = {
- {pg_eucjp2wchar_with_len, pg_eucjp_mblen},
- {pg_euccn2wchar_with_len, pg_euccn_mblen},
- {pg_euckr2wchar_with_len, pg_euckr_mblen},
- {pg_euctw2wchar_with_len, pg_euctw_mblen},
- {pg_utf2wchar_with_len, pg_utf_mblen},
- {pg_mule2wchar_with_len, pg_mule_mblen},
- {pg_latin12wchar_with_len, pg_latin1_mblen},
- {0, 0},
- {0, 0},
- {0, 0},
- {0, 0},
- {0, 0},
- {0, 0},
- {0, 0},
- {0, 0},
- {0, 0},
- {0, pg_sjis_mblen}
-};
-
-/*
- *########################################################################
- *
- * Public functions
- *
- *########################################################################
- */
-
-/* convert a multi-byte string to a wchar */
-void pg_mb2wchar(const unsigned char *from, pg_wchar *to)
-{
- (*pg_wchar_table[MULTIBYTE].mb2wchar_with_len)(from,to,strlen(from));
-}
-
-/* convert a multi-byte string to a wchar with a limited length */
-void pg_mb2wchar_with_len(const unsigned char *from, pg_wchar *to, int len)
-{
- (*pg_wchar_table[MULTIBYTE].mb2wchar_with_len)(from,to,len);
-}
-
-/* returns the byte length of a multi-byte word */
-int pg_mblen(const unsigned char *mbstr)
-{
- return((*pg_wchar_table[MULTIBYTE].mblen)(mbstr));
-}
-
-/* returns the byte length of a multi-byte word for an encoding */
-int pg_encoding_mblen(int encoding, const unsigned char *mbstr)
-{
- return((*pg_wchar_table[encoding].mblen)(mbstr));
-}
-
-/* returns the byte length of a word for mule internal code */
-int pg_mic_mblen(const unsigned char *mbstr)
-{
- return(pg_mule_mblen(mbstr));
-}
-
-/* returns the length (counted as a wchar) of a multi-byte string */
-int pg_mbstrlen(const unsigned char *mbstr)
-{
- int len = 0;
- while (*mbstr) {
- mbstr += pg_mblen(mbstr);
- len++;
- }
- return(len);
-}
-
-/* returns the length (counted as a wchar) of a multi-byte string
- (not necessarily NULL terminated) */
-int pg_mbstrlen_with_len(const unsigned char *mbstr, int limit)
-{
- int len = 0;
- int l;
- while (*mbstr && limit > 0) {
- l = pg_mblen(mbstr);
- limit -= l;
- mbstr += l;
- len++;
- }
- return(len);
-}
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