GopherProxy

	xscreenshot: descriptive error message on invalid winid - xscreenshot - screen …
	git clone git://git.codemadness.org/xscreenshot
	Log
	Files
	Refs
	README
	LICENSE
	---
	commit bcf725e82616a2ff64e4cc70c529c185440df14d
	parent c776bb923767e4ca1fa1e6179cfc37e3d0babc0a
	Author: Hiltjo Posthuma <[email protected]>
	Date: Mon, 16 Nov 2015 22:04:24 +0100

	xscreenshot: descriptive error message on invalid winid

	Diffstat:
	M xscreenshot.c \| 12 +++++++++---

	1 file changed, 9 insertions(+), 3 deletions(-)
	---
	diff --git a/xscreenshot.c b/xscreenshot.c
	@@ -35,6 +35,7 @@ main(int argc, char *argv[])
	XWindowAttributes attr;
	uint32_t tmp, w, h;
	uint16_t rgba[4];
	+ char *ep;

	if (!(dpy = XOpenDisplay(NULL)))
	die("Can't XOpenDisplay");
	@@ -44,9 +45,14 @@ main(int argc, char *argv[])
	if (strcmp(argv[1], "-h") == 0 \|\| strcmp(argv[1], "-v") == 0)
	usage(argv);
	errno = 0;
	- win = (Window)strtol(argv[1], NULL, 0);
	- if (errno)
	- usage(argv);
	+ win = (Window)strtol(argv[1], &ep, 0);
	+ if (errno \|\| argv[1] == ep \|\| *ep != '\0') {
	+ fprintf(stderr, "strtol: invalid number: \"%s\"%s%s\n",
	+ argv[1],
	+ errno ? ": " : "",
	+ errno ? strerror(errno) : "");
	+ exit(1);
	+ }
	} else {
	win = RootWindow(dpy, 0);
	}