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/* basic toolkit
*/
// === code ===================================================================
#include "toolkit.h"
#include <stdarg.h>
/* types for count/size & position/index
Nat is unsigned to allow for negative index à la Python,
and for tricks such as 'not-found' = -1
*/
typedef unsigned int Uint ;
typedef int Nat ;
/* common output funcs
*/
void line (void) {
putchar (EOL) ;
}
void write (char * str) {
printf ("%s", str) ;
}
void end_test () {
puts ("=================================================================") ;
line() ;
}
/* string funcs
* format: sprintf returning a new string
see also:
int asprintf (char **strp, const char *fmt, ...) ;
int vasprintf (char **strp, const char *fmt, va_list ap) ;
*/
char * format (char * form, ...) {
va_list args ; va_start (args, form) ;
char *s, *s0 ;
Uint weight ;
// Determine weight (count of bytes) in output (NUL excluded):
s0 = malloc (1 * sizeof(char)) ;
assert (s0 != NULL) ;
weight = vsnprintf (s0, 1, form, args) ;
printf ("weight:%i\n", weight) ;
assert (weight > 0) ;
weight ++ ; // for NUL terminator
free (s0) ; s0 = NULL ;
// Write into new string of that weight:
s = malloc (weight * sizeof(char)) ;
assert (s != NULL) ;
weight = vsprintf (s, form, args) ;
//~ printf ("weight:%i\n", weight) ;
va_end (args) ;
return s ;
}
/* debug tool func
*/
int stop (void) { exit (EXIT_SUCCESS) ;}
// === test ===================================================================
void test () {
char * s = format ("int:%05i float:%+9.3f string:'%9s'",
123, 1.23, "123") ;
puts (s) ;
}
int main (void) {
test () ;
return EXIT_SUCCESS ;
} |
compilation de programme multi-modules
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Envoyé par bpy1401
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