GopherProxy

	tRead up to len and terminate at the first non-printable - spoon - dwm status u…
	git clone git://src.adamsgaard.dk/spoon
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	---
	commit cbac9231f348a7b018dfc6ac175cf6c3c78ae872
	parent 053ab46b88574588dcbaff5db0757414d453b446
	Author: lostd <[email protected]>
	Date: Sun, 2 Apr 2017 18:30:37 +0300

	Read up to len and terminate at the first non-printable

	Diffstat:
	M file.c \| 26 +++++++++++++++++++++++++-

	1 file changed, 25 insertions(+), 1 deletion(-)
	---
	diff --git a/file.c b/file.c
	t@@ -1,24 +1,48 @@
	+#include <ctype.h>
	#include <err.h>
	#include <fcntl.h>
	#include <unistd.h>

	+ssize_t
	+readn(int fd, void *buf, size_t nbytes)
	+{
	+ size_t nleft = nbytes;
	+ ssize_t n;
	+
	+ do {
	+ n = read(fd, buf, nleft);
	+ if (n == 0)
	+ break;
	+ else if (n == -1)
	+ return -1;
	+ nleft -= n;
	+ buf += n;
	+ } while (nleft > 0);
	+ return (nbytes - nleft);
	+}
	+
	int
	fileread(void arg, char buf, size_t len)
	{
	char *path = arg;
	ssize_t n;
	int fd;
	+ int i;

	fd = open(path, O_RDONLY);
	if (fd == -1) {
	warn("open %s", path);
	return -1;
	}
	- n = read(fd, buf, len);
	+ n = readn(fd, buf, len);
	close(fd);
	if (n == -1 \|\| n == 0)
	return -1;
	else
	buf[n - 1] = '\0';
	+ /* stop at the first non-printable character */
	+ for (i = 0; i < len; i++)
	+ if (!isprint(buf[i]))
	+ buf[i] = '\0';
	return 0;
	}