README.text

Author: Lahcen EL HADDATI (elhaddati@hotmail.com)

This is text_driver, the same thing as mysql_driver but it gets
information from a text file. The text file must be like this :

{name}|{email}|{adress}|{phone}|
Marry|marry@mail.com|Paris|00-11-22-33-44|
Jean|jean@mail.com|London|00-33-33-33-33|
Paul|paul@mail.com|Washington|00-77-66-55-44|
Lahcen|lahcen@mail.com|Tokyo|00-88-22-77-44|
Nicolas|nicolas@mail.com|Caen|00-44-88-00-44|



We use a single function, text_driver:

static int text_driver(void *pdb, char *d, char *q,
	int (*callback)(int, char **, void *), void *closure)

*- d is the directory where the text file is.

*- q is a query like an SQL string , such as

        select * from file where name='lahcen'

but it does not support queries like : 
        select count(*) from ...
or      select * from file where name='lehcen' and phone='....'
 

text_driver calls the callback once for each row returned. No rows does
not necessarily indicate an error condition; 

 text_driver returns the number of rows or -1 for error.

*- The callback takes three arguments, an integer indicating the number
of columns in the reply, an array of pointers to the fields and a
pointer to some arbitrary data that the callback might need.
Values are always returned as strings. Synopsis:

        int callback(int n, char **p, void *closure)




N.B. I did that text_driver very very quickly, because I have to use it.
So it is not well done but it works. And I think that there is some bugs
that I'll try to resolve when I'll have time.