ofindline() - finds a line with a matching field
ofindline() retrieves a line from an open file that has a matching character
string in the given field.
ofindline() fills in array with pointers to strings that make up
each field on the line. The strings are allocated new storage. The field
delimiter, delim, is used to break up each line of the file into fields.
string is the string to match. fieldno is the field number to match. Fields
are numbered 0..n. array is an array of pointers to fill in. arraysize is
the size of array.
- no match.
- arg error. Returned only if the condition findline_arg_err is handled and
the handler returns.
- not enough memory to allocate space for files. Returned only if the
condition findline_storage is handled and the handler returns.