diff options
| author | Tatsuo Ishii <ishii@postgresql.org> | 2002-04-08 06:21:31 +0000 |
|---|---|---|
| committer | Tatsuo Ishii <ishii@postgresql.org> | 2002-04-08 06:21:31 +0000 |
| commit | 891ce19bcc1e2f9deba4a1c0eb22e6ee8dad5e04 (patch) | |
| tree | 70762793b53530b738a4c793ba8e523e60c7e47c /src/interfaces/libpq/fe-exec.c | |
| parent | af997458ebe32f1f9a10492bbe3aef549ada4806 (diff) | |
A backport patch.
Fix PQescapeBytea/PQunescapeBytea so that they handle bytes > 0x7f.
This is necessary for mulibyte character sequences.
See "[HACKERS] PQescapeBytea is not multibyte aware" thread posted around
2002/04/05 for more details.
Diffstat (limited to 'src/interfaces/libpq/fe-exec.c')
| -rw-r--r-- | src/interfaces/libpq/fe-exec.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/src/interfaces/libpq/fe-exec.c b/src/interfaces/libpq/fe-exec.c index 123d7abd129..581288d1499 100644 --- a/src/interfaces/libpq/fe-exec.c +++ b/src/interfaces/libpq/fe-exec.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.113 2001/10/25 05:50:13 momjian Exp $ + * $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-exec.c,v 1.113.2.1 2002/04/08 06:21:31 ishii Exp $ * *------------------------------------------------------------------------- */ @@ -115,6 +115,7 @@ PQescapeString(char *to, const char *from, size_t length) * '\0' == ASCII 0 == \\000 * '\'' == ASCII 39 == \' * '\\' == ASCII 92 == \\\\ + * anything >= 0x80 ---> \\ooo (where ooo is an octal expression) */ unsigned char * PQescapeBytea(unsigned char *bintext, size_t binlen, size_t *bytealen) @@ -131,40 +132,39 @@ PQescapeBytea(unsigned char *bintext, size_t binlen, size_t *bytealen) len = 1; vp = bintext; - for (i = binlen; i != 0; i--, vp++) + for (i = binlen; i > 0; i--, vp++) { - if (*vp == 0) - len += 5; - else if (*vp == 39) + if (*vp == 0 || *vp >= 0x80) + len += 5; /* '5' is for '\\ooo' */ + else if (*vp == '\'') len += 2; - else if (*vp == 92) + else if (*vp == '\\') len += 4; else len++; } rp = result = (unsigned char *) malloc(len); + if (rp == NULL) + return NULL; + vp = bintext; *bytealen = len; - for (i = binlen; i != 0; i--, vp++) + for (i = binlen; i > 0; i--, vp++) { - if (*vp == 0) + if (*vp == 0 || *vp >= 0x80) { - rp[0] = '\\'; - rp[1] = '\\'; - rp[2] = '0'; - rp[3] = '0'; - rp[4] = '0'; + (void)sprintf(rp,"\\\\%03o",*vp); rp += 5; } - else if (*vp == 39) + else if (*vp == '\'') { rp[0] = '\\'; rp[1] = '\''; rp += 2; } - else if (*vp == 92) + else if (*vp == '\\') { rp[0] = '\\'; rp[1] = '\\'; |