read_revision_from_stdin(): use strbuf

It is so 2005 (and Linus ;-) to have a fixed 1000-byte buffer that
reads from the user.  Let's use strbuf to unlimit the input length.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/revision.c b/revision.c
index 9fc4e8d3818f29261b1963f4995bc36f8af31179..d56387fe65ea55d48c7eef1dda23f789e334397a 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -955,19 +955,21 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
 
 void read_revisions_from_stdin(struct rev_info *revs)
 {
-       char line[1000];
+       struct strbuf sb;
 
-       while (fgets(line, sizeof(line), stdin) != NULL) {
-               int len = strlen(line);
-               if (len && line[len - 1] == '\n')
-                       line[--len] = '\0';
+       strbuf_init(&sb, 1000);
+       while (strbuf_getwholeline(&sb, stdin, '\n') != EOF) {
+               int len = sb.len;
+               if (len && sb.buf[len - 1] == '\n')
+                       sb.buf[--len] = '\0';
                if (!len)
                        break;
-               if (line[0] == '-')
+               if (sb.buf[0] == '-')
                        die("options not supported in --stdin mode");
-               if (handle_revision_arg(line, revs, 0, 1))
-                       die("bad revision '%s'", line);
+               if (handle_revision_arg(sb.buf, revs, 0, 1))
+                       die("bad revision '%s'", sb.buf);
        }
+       strbuf_release(&sb);
 }
 
 static void add_grep(struct rev_info *revs, const char *ptn, enum grep_pat_token what)