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Print combining characters (those reported as having zero width by

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PQdsplen()) normally, instead of replacing them by \uXXXX sequences.
Assume that they in fact occupy zero screen space for formatting purposes.
Per gripe from Michael Fuhr and ensuing discussion.
This commit is contained in:
Tom Lane 2006-12-27 19:45:51 +00:00
parent 094ccd1ca3
commit 38b72135c9
1 changed files with 15 additions and 20 deletions
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35
src/bin/psql/mbprint.c
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@ -3,7 +3,7 @@
* *
* Copyright (c) 2000-2006, PostgreSQL Global Development Group * Copyright (c) 2000-2006, PostgreSQL Global Development Group
* *
* $PostgreSQL: pgsql/src/bin/psql/mbprint.c,v 1.23 2006/10/04 00:30:06 momjian Exp $ * $PostgreSQL: pgsql/src/bin/psql/mbprint.c,v 1.23.2.1 2006/12/27 19:45:51 tgl Exp $
*/ */
#include "postgres_fe.h" #include "postgres_fe.h"
@ -196,7 +196,7 @@ pg_wcssize(unsigned char *pwcs, size_t len, int encoding, int *result_width,
break; break;
w = PQdsplen((char *) pwcs, encoding); w = PQdsplen((char *) pwcs, encoding);
if (chlen == 1) /* ASCII char */ if (chlen == 1) /* single-byte char */
{ {
if (*pwcs == '\n') /* Newline */ if (*pwcs == '\n') /* Newline */
{ {
@ -211,25 +211,23 @@ pg_wcssize(unsigned char *pwcs, size_t len, int encoding, int *result_width,
linewidth += 2; linewidth += 2;
format_size += 2; format_size += 2;
} }
else if (w <= 0) /* Other control char */ else if (w < 0) /* Other control char */
{ {
linewidth += 4; linewidth += 4;
format_size += 4; format_size += 4;
} }
else else /* Output it as-is */
/* Output itself */
{ {
linewidth++; linewidth += w;
format_size += 1; format_size += 1;
} }
} }
else if (w <= 0) /* Non-ascii control char */ else if (w < 0) /* Non-ascii control char */
{ {
linewidth += 6; /* \u0000 */ linewidth += 6; /* \u0000 */
format_size += 6; format_size += 6;
} }
else else /* All other chars */
/* All other chars */
{ {
linewidth += w; linewidth += w;
format_size += chlen; format_size += chlen;
@ -267,11 +265,11 @@ pg_wcsformat(unsigned char *pwcs, size_t len, int encoding,
break; break;
w = PQdsplen((char *) pwcs, encoding); w = PQdsplen((char *) pwcs, encoding);
if (chlen == 1) /* single byte char char */ if (chlen == 1) /* single-byte char */
{ {
if (*pwcs == '\n') /* Newline */ if (*pwcs == '\n') /* Newline */
{ {
*ptr++ = 0; /* NULL char */ *ptr++ = '\0';
lines->width = linewidth; lines->width = linewidth;
linewidth = 0; linewidth = 0;
lines++; lines++;
@ -287,20 +285,19 @@ pg_wcsformat(unsigned char *pwcs, size_t len, int encoding,
linewidth += 2; linewidth += 2;
ptr += 2; ptr += 2;
} }
else if (w <= 0) /* Other control char */ else if (w < 0) /* Other control char */
{ {
sprintf((char *) ptr, "\\x%02X", *pwcs); sprintf((char *) ptr, "\\x%02X", *pwcs);
linewidth += 4; linewidth += 4;
ptr += 4; ptr += 4;
} }
else else /* Output it as-is */
/* Output itself */
{ {
linewidth++; linewidth += w;
*ptr++ = *pwcs; *ptr++ = *pwcs;
} }
} }
else if (w <= 0) /* Non-ascii control char */ else if (w < 0) /* Non-ascii control char */
{ {
if (encoding == PG_UTF8) if (encoding == PG_UTF8)
sprintf((char *) ptr, "\\u%04X", utf2ucs(pwcs)); sprintf((char *) ptr, "\\u%04X", utf2ucs(pwcs));
@ -316,8 +313,7 @@ pg_wcsformat(unsigned char *pwcs, size_t len, int encoding,
ptr += 6; ptr += 6;
linewidth += 6; linewidth += 6;
} }
else else /* All other chars */
/* All other chars */
{ {
int i; int i;
@ -327,13 +323,12 @@ pg_wcsformat(unsigned char *pwcs, size_t len, int encoding,
} }
len -= chlen; len -= chlen;
} }
*ptr++ = 0; *ptr++ = '\0';
lines->width = linewidth; lines->width = linewidth;
lines++; lines++;
count--; count--;
if (count > 0) if (count > 0)
lines->ptr = NULL; lines->ptr = NULL;
return;
} }
unsigned char * unsigned char *