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ed: add init()

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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.
This commit is contained in:
Roberto E. Vargas Caballero 2016-01-01 11:17:02 +01:00 committed by sin
parent 03d27b7806
commit b19d708923
1 changed files with 18 additions and 14 deletions
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32
ed.c
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@ -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 */