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Commit16adaf1

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committed
Swap the order of testing for control characters and for column delimiter in
CopyAttributeOutText(), so that control characters are converted to theC-style escape sequences even if they happen to be equal to the columndelimiter (as is true by default for tab, for example). Oversight in myprevious patch to restore pre-8.3 behavior of COPY OUT escaping. Per reportfrom Tomas Szepe.
1 parentf5f1355 commit16adaf1

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1 file changed

+21
-15
lines changed

1 file changed

+21
-15
lines changed

‎src/backend/commands/copy.c‎

Lines changed: 21 additions & 15 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $PostgreSQL: pgsql/src/backend/commands/copy.c,v 1.290 2007/12/03 00:03:05 tgl Exp $
11+
* $PostgreSQL: pgsql/src/backend/commands/copy.c,v 1.291 2007/12/27 16:45:22 tgl Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -3094,13 +3094,7 @@ CopyAttributeOutText(CopyState cstate, char *string)
30943094
start=ptr;
30953095
while ((c=*ptr)!='\0')
30963096
{
3097-
if (c=='\\'||c==delimc)
3098-
{
3099-
DUMPSOFAR();
3100-
CopySendChar(cstate,'\\');
3101-
start=ptr++;/* we include char in next run */
3102-
}
3103-
elseif ((unsignedchar)c< (unsignedchar)0x20)
3097+
if ((unsignedchar)c< (unsignedchar)0x20)
31043098
{
31053099
/*
31063100
* \r and \n must be escaped, the others are traditional.
@@ -3130,6 +3124,9 @@ CopyAttributeOutText(CopyState cstate, char *string)
31303124
c='v';
31313125
break;
31323126
default:
3127+
/* If it's the delimiter, must backslash it */
3128+
if (c==delimc)
3129+
break;
31333130
/* All ASCII control chars are length 1 */
31343131
ptr++;
31353132
continue;/* fall to end of loop */
@@ -3140,6 +3137,12 @@ CopyAttributeOutText(CopyState cstate, char *string)
31403137
CopySendChar(cstate,c);
31413138
start=++ptr;/* do not include char in next run */
31423139
}
3140+
elseif (c=='\\'||c==delimc)
3141+
{
3142+
DUMPSOFAR();
3143+
CopySendChar(cstate,'\\');
3144+
start=ptr++;/* we include char in next run */
3145+
}
31433146
elseif (IS_HIGHBIT_SET(c))
31443147
ptr+=pg_encoding_mblen(cstate->client_encoding,ptr);
31453148
else
@@ -3151,13 +3154,7 @@ CopyAttributeOutText(CopyState cstate, char *string)
31513154
start=ptr;
31523155
while ((c=*ptr)!='\0')
31533156
{
3154-
if (c=='\\'||c==delimc)
3155-
{
3156-
DUMPSOFAR();
3157-
CopySendChar(cstate,'\\');
3158-
start=ptr++;/* we include char in next run */
3159-
}
3160-
elseif ((unsignedchar)c< (unsignedchar)0x20)
3157+
if ((unsignedchar)c< (unsignedchar)0x20)
31613158
{
31623159
/*
31633160
* \r and \n must be escaped, the others are traditional.
@@ -3187,6 +3184,9 @@ CopyAttributeOutText(CopyState cstate, char *string)
31873184
c='v';
31883185
break;
31893186
default:
3187+
/* If it's the delimiter, must backslash it */
3188+
if (c==delimc)
3189+
break;
31903190
/* All ASCII control chars are length 1 */
31913191
ptr++;
31923192
continue;/* fall to end of loop */
@@ -3197,6 +3197,12 @@ CopyAttributeOutText(CopyState cstate, char *string)
31973197
CopySendChar(cstate,c);
31983198
start=++ptr;/* do not include char in next run */
31993199
}
3200+
elseif (c=='\\'||c==delimc)
3201+
{
3202+
DUMPSOFAR();
3203+
CopySendChar(cstate,'\\');
3204+
start=ptr++;/* we include char in next run */
3205+
}
32003206
else
32013207
ptr++;
32023208
}

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