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Commitb376906

Browse files
committed
In ecpg, automatically double single quotes in $$ strings because
internally $$ strings are converted to single-quote strings.In ecpg, output newlines in commands using standard C escapes, ratherthan using literal newlines, which is not portable.
1 parent9190b4d commitb376906

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2 files changed

+30
-29
lines changed

2 files changed

+30
-29
lines changed

‎src/interfaces/ecpg/preproc/output.c‎

Lines changed: 24 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -2,6 +2,8 @@
22

33
#include"extern.h"
44

5+
staticvoidouput_escaped_str(char*cmd);
6+
57
void
68
output_line_number(void)
79
{
@@ -10,21 +12,11 @@ output_line_number(void)
1012
}
1113

1214
void
13-
output_simple_statement(char*cmd)
15+
output_simple_statement(char*stmt)
1416
{
15-
inti,
16-
j=strlen(cmd);;
17-
18-
/* output this char by char as we have to filter '\"' */
19-
for (i=0;i<j;i++)
20-
{
21-
if (cmd[i]!='"')
22-
fputc(cmd[i],yyout);
23-
else
24-
fputs("\\\"",yyout);
25-
}
17+
ouput_escaped_str(stmt);
2618
output_line_number();
27-
free(cmd);
19+
free(stmt);
2820
}
2921

3022
/*
@@ -106,20 +98,8 @@ hashline_number(void)
10698
void
10799
output_statement(char*stmt,intmode,char*con)
108100
{
109-
inti,
110-
j=strlen(stmt);
111-
112101
fprintf(yyout,"{ ECPGdo(__LINE__, %d, %d, %s, \"",compat,force_indicator,con ?con :"NULL");
113-
114-
/* output this char by char as we have to filter '\"' */
115-
for (i=0;i<j;i++)
116-
{
117-
if (stmt[i]!='"')
118-
fputc(stmt[i],yyout);
119-
else
120-
fputs("\\\"",yyout);
121-
}
122-
102+
ouput_escaped_str(stmt);
123103
fputs("\", ",yyout);
124104

125105
/* dump variables to C file */
@@ -135,3 +115,21 @@ output_statement(char *stmt, int mode, char *con)
135115
if (connection!=NULL)
136116
free(connection);
137117
}
118+
119+
120+
staticvoid
121+
ouput_escaped_str(char*str)
122+
{
123+
inti,len=strlen(str);
124+
125+
/* output this char by char as we have to filter " and \n */
126+
for (i=0;i<len;i++)
127+
{
128+
if (str[i]=='"')
129+
fputs("\\\"",yyout);
130+
elseif (str[i]=='\n')
131+
fputs("\\n\\\n",yyout);
132+
else
133+
fputc(str[i],yyout);
134+
}
135+
}

‎src/interfaces/ecpg/preproc/pgc.l‎

Lines changed: 6 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -12,7 +12,7 @@
1212
*
1313
*
1414
* IDENTIFICATION
15-
* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/pgc.l,v 1.140 2006/02/02 03:51:41 momjian Exp $
15+
* $PostgreSQL: pgsql/src/interfaces/ecpg/preproc/pgc.l,v 1.141 2006/02/04 02:32:38 momjian Exp $
1616
*
1717
*-------------------------------------------------------------------------
1818
*/
@@ -152,7 +152,7 @@ dolq_start[A-Za-z\200-\377_]
152152
dolq_cont[A-Za-z\200-\377_0-9]
153153
dolqdelim\$({dolq_start}{dolq_cont}*)?\$
154154
dolqfailed\${dolq_start}{dolq_cont}*
155-
dolqinside[^$]+
155+
dolqinside[^$']+
156156

157157
/* Double quote
158158
* Allows embedded spaces and other special characters into identifiers.
@@ -476,7 +476,10 @@ cppline{space}*#(.*\\{space})*.*{newline}
476476
<xdolq>{dolqinside} {addlit(yytext, yyleng); }
477477
<xdolq>{dolqfailed}{addlit(yytext, yyleng); }
478478
<xdolq>.{
479-
/* This is only needed for $ inside the quoted text */
479+
/* $$ is implemented as a single-quoted string, so double it? */
480+
if (yytext[0] =='\'')
481+
addlitchar(yytext[0]);
482+
/* single quote or dollar sign */
480483
addlitchar(yytext[0]);
481484
}
482485
<xdolq><<EOF>> {yyerror("unterminated dollar-quoted string"); }

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