config

commit 904ce83c3b73e531989d753a2fb3473266441dc3
parent 9c1071896127f15aea5df251ae35907b37404600
Author: Jacob R. Edwards <n/a>
Date:   Mon,  7 Feb 2022 18:20:53 -0800

Add interactive confirmation to module program

Diffstat:
M
lib/module.c
 | 
28
+++++++++++++++++++++++++---

1 file changed, 25 insertions(+), 3 deletions(-)
diff --git a/lib/module.c b/lib/module.c
@@ -21,6 +21,7 @@
 static int argtoo;	/* Install given directories too, not just their contents. */
 static int force;	/* Install even if the target exists. */
 static int (*action)(char *, char *);	/* Install function (link, copy, or none). */
+static int check;	/* Ask for confirmation instead of exiting. */
 
 void
 die(char *s)
@@ -98,6 +99,24 @@ none(char *a, char *b)
 }
 
 int
+confirm(char *a, char *b)
+{
+	char c, answer;
+
+	if (force)
+		return 1;
+	if (!check)
+		return 0;
+
+	fprintf(stderr, "%s -> %s? ", a, b);
+	answer = fgetc(stdin);
+	do
+		c = fgetc(stdin);
+	while (c != '\n' && c != EOF);
+	return answer == 'y' || answer == 'Y';	
+}
+
+int
 main(int argc, char *argv[])
 {
 	FTS *fts;
@@ -112,7 +131,7 @@ main(int argc, char *argv[])
 	progname = *argv;
 	if (argc < 4) {
 usage:
-		fprintf(stderr, "usage: %s [force] action source ... target\n", progname);
+		fprintf(stderr, "usage: %s [force | check] action source ... target\n", progname);
 		return 1;
 	}
 
@@ -120,6 +139,9 @@ usage:
 	if (strcmp(*argv, "force") == 0) {
 		force = 1;
 		SHIFT(1);
+	} else if (strcmp(*argv, "check") == 0) {
+		check = 1;
+		SHIFT(1);
 	}
 
 	if (strcmp(argv[0], "copy") == 0)
@@ -181,9 +203,9 @@ usage:
 			else {
 				if (errno == ENOENT)
 					status = action(ent->fts_accpath, new);
-				else if (force)
+				else if (confirm(ent->fts_accpath, new))
 					status = (unlink(new) || action(ent->fts_accpath, new));
-				else if (action != none) {
+				else if (!check && action != none) {
 					errno = EEXIST;
 					status = 1;
 				}