Hi, hacker
I found in function ECPGconnect, the connect string in comment is written as:
/*------
* new style:
* <tcp|unix>:postgresql://server[:port|:/unixsocket/path:]
* [/db-name][?options]
*------
*/
But, the parse logical seems wrong, like:
tmp = strrchr(dbname + offset, ':');
tmp2 = strchr(tmp + 1, ':')
the value tmp2 will always be NULL, the unix-socket path will be ignored.
I have fixed this problem, the patch attached.
However, since this usage is not recorded in manual[1](maybe this is why this problem is not found for a long time), so
howabout delete this source directly instead?
Thoughts?
This patch only fix the problem when using a character variable to store the connect string like:
EXEC SQL BEGIN DECLARE SECTION;
char constr[] = "unix:postgresql://localhost:/tmp/a:?port=5435&dbname=postgres";
EXEC SQL END DECLARE SECTION;
If I write a source like:
EXEC SQL CONNECT TO unix:postgresql://localhost:/tmp/a:/postgres?port=5435
EXEC SQL CONNECT TO unix:postgresql://localhost/postgres?host=/tmp/a&port=5435
The program ecpg will report some error when parse .pgc file
I will try to fix this problem later, but it seems a little difficult to add some lex/bison file rules
[1] https://www.postgresql.org/docs/13/ecpg-connect.html#ECPG-CONNECTING
Best regards
Shenhao Wang
