commit b19d708923b28cfc84a963b6eb59427b3c09907c
parent 03d27b7806278ed1e723203346288e3ba84a0b4d
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date: Fri, 1 Jan 2016 11:17:02 +0100
ed: add init()
These funcction initializes the scratch buffer, and in case of
having a file name parameter it loads the file in the scratch.
It also fixes a problem before this version, where the saved
filename was not set when the file didn't exist.
Diffstat:
| M | ed.c | | | 32 | ++++++++++++++++++-------------- |
1 file changed, 18 insertions(+), 14 deletions(-)
diff --git a/ed.c b/ed.c
@@ -629,12 +629,6 @@ doread(char *fname)
fp = NULL;
if (fclose(aux))
error("input/output error");
-
- if (savfname[0] == '\0') {
- modflag = 0;
- clearundo();
- strcpy(savfname, fname);
- }
}
static void
@@ -1359,6 +1353,23 @@ edit(void)
}
}
+static void
+init(char *fname)
+{
+ size_t len;
+
+ if (setjmp(savesp))
+ return;
+ setscratch();
+ if (!fname)
+ return;
+ if ((len = strlen(fname)) >= FILENAME_MAX || len == 0)
+ error("incorrect filename");
+ memcpy(savfname, fname, len);
+ doread(fname);
+ clearundo();
+}
+
int
main(int argc, char *argv[])
{
@@ -1380,15 +1391,8 @@ main(int argc, char *argv[])
signal(SIGINT, sigintr);
signal(SIGHUP, sighup);
signal(SIGQUIT, SIG_IGN);
- if (!setjmp(savesp)) {
- setscratch();
- if (*argv) {
- if (strlen(*argv) >= FILENAME_MAX)
- error("file name too long");
- doread(*argv);
- }
- }
+ init(*argv);
edit();
/* not reached */
