ref: e72aa2d79aff1b39b24c98ad9d02c487a0014ad5
parent: a62bb92d35278237f1fdf268ad41d11af51e7fba
author: mkf <mkf@cloud9p.org>
date: Thu May 9 17:04:25 EDT 2024
unix.[ch]: add plan9-alike fmt functions main difference is printf and friends work on a FILE, while plan 9 and friends work on a fd, an fd can't be buffered and is a bit slower, but it's easier than making a socket to act like as a FILE. i also like their name. ☺
--- a/unix.c
+++ b/unix.c
@@ -1,6 +1,7 @@
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
+#include <unistd.h>
#include "unix.h"
Point
@@ -35,7 +36,7 @@
int
eqpt(Point p, Point q)
{- return p.x==q.x && p.y==q.y;
+ return p.x == q.x && p.y == q.y;
}
int
@@ -43,3 +44,54 @@
{return rand() % n;
}
+
+/*
+ * i'm well aware of printf and it's friends
+ * but i had to prefer one (Plan 9) interface over other one (POSIX/ANSI)
+ */
+int
+vsprint(char *out, char *fmt, va_list arg)
+{+ int n;
+ n = vsprintf(out, fmt, arg);
+ return n;
+}
+
+int
+sprint(char *out, char *fmt, ...)
+{+ int n;
+ va_list arg;
+ va_start(arg, fmt);
+
+ n = vsprint(out, fmt, arg);
+ va_end(arg);
+ return n;
+}
+
+int
+vfprint(int fd, char *fmt, va_list arg)
+{+ char *s = (char*)malloc(1024);
+ int n;
+
+ n = vsprint(s, fmt, arg);
+ if(write(fd, s, n) < n)
+ perror("couldn't write");+ free(s);
+ return n;
+}
+
+int
+fprint(int fd, char *fmt, ...)
+{+ int n;
+ va_list arg;
+ va_start(arg, fmt);
+
+ n = vfprint(fd, fmt, arg);
+ va_end(arg);
+ return n;
+}
+
+
--- a/unix.h
+++ b/unix.h
@@ -1,7 +1,10 @@
/* this code is uglier than what it should be */
#pragma once
#include <string.h>
-#include <stdio.h> /* replace with plan 9's print? */
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdarg.h>
/* uncomment if your compiler doesn't support it (ANSI, C99)
#define _Noreturn
@@ -21,3 +24,9 @@
_Noreturn void exits(char *s);
int eqpt(Point p, Point q);
int nrand(int n);
+
+/* fmt */
+int vsprint(char *out, char *fmt, va_list arg);
+int sprint(char *out, char *fmt, ...);
+int vfprint(int fd, char *fmt, va_list arg);
+int fprint(int fd, char *fmt, ...);