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(define cpu-type '(("name" . "cpu")
("label" . "CPU Usage")
("fields" . (("unsigned long" ("total" "Total CPU Usage")
("user") ("nice") ("sys") ("idle"))
("const char" ("name"))
)
)
)
)
;; computes constant for struct field (eg. GLIBTOP_CPU_TOTAL)
(define field-name-constant
(lambda (name field)
(string "GLIBTOP_"
(string-upcase! (string name))
"_"
(string-upcase! (string field)))
)
)
;; computes structure name (eg. glibtop_cpu)
(define make-struct-name
(lambda (type)
(string "glibtop_" (assoc-ref type "name"))
)
)
(define tab-pad-string
(lambda (string tabs)
(string-append string (make-string (- (* tabs 8) (string-length string)) #\space))
)
)
(define make-field-list
(lambda (name type fields)
(let* ((output (string)) (pos 1))
(map
(lambda (x)
(let* ((sep (if (= pos (length fields)) ";" ","))
(start (if (= pos 1)
(string "\t"
(tab-pad-string (string type) 2))
(string "\t\t"))
)
(comment (string (if (= pos 1) "" "\t") "/* "
(tab-pad-string (field-name-constant name (car x)) 3)
" */"))
(field (tab-pad-string (string-append (string (car x)) sep) 2))
)
(set! pos (+ pos 1))
(string-append start field comment "\n")
)
)
fields)
)
)
)
(define make-struct-body
(lambda (type)
(let* ((name (assoc-ref type "name"))
(data (assoc-ref type "fields"))
(output (string))
)
(for-each
(lambda (y)
(for-each
(lambda (z)
(set! output (string-append output z))
)
y)
)
(map
(lambda (x) (make-field-list name (car x) (cdr x)))
data)
)
output)
)
)
(define make-struct
(lambda (type)
(let* ((name (assoc-ref type "name"))
(data (assoc-ref type "fields"))
(output (string-append
(tab-pad-string
(string "typedef struct _glibtop_" name)
5)
(string "glibtop_" name ";\n\n"
"struct glibtop_" name "\n{\n\t"
"unsigned long\tflags;\n")
)
)
)
(string-append output (make-struct-body type) "};\n")
)
)
)
(define make-field-name-list
(lambda (type)
(let* ((name (assoc-ref type "name"))
(data (assoc-ref type "fields"))
(return (list))
)
(map
(lambda (x)
(map
(lambda (y) (set! return (append return (list (car y)))))
(cdr x)
)
)
data)
return)
)
)
(define make-field-constants
(lambda (type)
(let* ((name (assoc-ref type "name"))
(data (make-field-name-list type))
(output (string
(tab-pad-string
(string "#define GLIBTOP_MAX_"
(string-upcase! (string name))
) 5)
(number->string (length data))
"\n\n"
)
)
(pos 0)
)
(for-each
(lambda (x)
(set! output (string-append output (string
(tab-pad-string
(string "#define GLIBTOP_"
(string-upcase! (string name))
"_"
(string-upcase! (string x))
) 5)
(number->string pos)
"\n"
)
)
)
(set! pos (+ pos 1))
)
data)
output)
)
)
(define make-extern-defs
(lambda (type)
(let* ((name (assoc-ref type "name"))
)
(string
(tab-pad-string (string "extern void glibtop_get_" name) 6)
"__P(glibtop *, glibtop_" name " *);\n\n"
"#ifdef HAVE_GUILE\n\n"
"/* You need to link with -lgtop_guile to get this stuff here. */\n\n"
(tab-pad-string (string "extern SCM glibtop_get_" name) 6)
"__P(void);\n\n"
"#endif /* HAVE_GUILE */\n\n"
"#ifdef GLIBTOP_GUILE_NAMES\n\n"
"/* You need to link with -lgtop_guile_names to get this stuff here. */\n\n"
(tab-pad-string (string "extern SCM glibtop_guile_names_" name) 6)
"__P(void);\n"
(tab-pad-string (string "extern SCM glibtop_guile_labels_" name) 6)
"__P(void);\n"
(tab-pad-string (string "extern SCM glibtop_guile_descriptions_" name) 6)
"__P(void);\n\n"
"#endif /* GLIBTOP_GUILE_NAMES */\n\n"
"#ifdef GLIBTOP_NAMES\n\n"
"/* You need to link with -lgtop_names to get this stuff here. */\n\n"
(tab-pad-string (string "extern const char *glibtop_names_" name) 6)
"[];\n"
(tab-pad-string (string "extern const char *glibtop_labels_" name) 6)
"[];\n"
(tab-pad-string (string "extern const char *glibtop_descriptions_" name) 6)
"[];\n\n"
"#endif /* GLIBTOP_NAMES */\n\n")
)
)
)
(begin
(display (make-field-constants cpu-type)) (newline)
(display (make-struct cpu-type)) (newline)
(display (make-extern-defs cpu-type)) (newline)
)
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