escape_connection_string()

char* escape_connection_string

(

char *

str

)

Escape strings that are to be used as part of a PostgreSQL connection string.

If no characters require escaping, simply return the input pointer. Otherwise return a new allocated string.

Definition at line 113 of file shpcommon.c.

{
        /*
         * Escape apostrophes and backslashes:
         *   ' -> \'
         *   \ -> \\
         *
         * 1. find # of characters
         * 2. make new string
         */
 
        char *result;
        char *ptr, *optr;
        int toescape = 0;
        size_t size;
 
        ptr = str;
 
        /* Count how many characters we need to escape so we know the size of the string we need to return */
        while (*ptr)
        {
                if (*ptr == '\'' || *ptr == '\\')
                        toescape++;
 
                ptr++;
        }
 
        /* If we don't have to escape anything, simply return the input pointer */
        if (toescape == 0)
                return str;
 
        size = ptr - str + toescape + 1;
        result = calloc(1, size);
        optr = result;
        ptr = str;
 
        while (*ptr)
        {
                if (*ptr == '\'' || *ptr == '\\')
                        *optr++ = '\\';
 
                *optr++ = *ptr++;
        }
 
        *optr = '\0';
 
        return result;
}

References result, and str.