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-rw-r--r--strbuf.c52
1 files changed, 49 insertions, 3 deletions
diff --git a/strbuf.c b/strbuf.c
index 0346e74a47..0d4f4e54ec 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -229,7 +229,8 @@ static void add_lines(struct strbuf *out,
const char *next = memchr(buf, '\n', size);
next = next ? (next + 1) : (buf + size);
- prefix = (prefix2 && buf[0] == '\n') ? prefix2 : prefix1;
+ prefix = ((prefix2 && (buf[0] == '\n' || buf[0] == '\t'))
+ ? prefix2 : prefix1);
strbuf_addstr(out, prefix);
strbuf_add(out, buf, next - buf);
size -= next - buf;
@@ -434,6 +435,47 @@ int strbuf_getcwd(struct strbuf *sb)
return -1;
}
+#ifdef HAVE_GETDELIM
+int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
+{
+ ssize_t r;
+
+ if (feof(fp))
+ return EOF;
+
+ strbuf_reset(sb);
+
+ /* Translate slopbuf to NULL, as we cannot call realloc on it */
+ if (!sb->alloc)
+ sb->buf = NULL;
+ r = getdelim(&sb->buf, &sb->alloc, term, fp);
+
+ if (r > 0) {
+ sb->len = r;
+ return 0;
+ }
+ assert(r == -1);
+
+ /*
+ * Normally we would have called xrealloc, which will try to free
+ * memory and recover. But we have no way to tell getdelim() to do so.
+ * Worse, we cannot try to recover ENOMEM ourselves, because we have
+ * no idea how many bytes were read by getdelim.
+ *
+ * Dying here is reasonable. It mirrors what xrealloc would do on
+ * catastrophic memory failure. We skip the opportunity to free pack
+ * memory and retry, but that's unlikely to help for a malloc small
+ * enough to hold a single line of input, anyway.
+ */
+ if (errno == ENOMEM)
+ die("Out of memory, getdelim failed");
+
+ /* Restore slopbuf that we moved out of the way before */
+ if (!sb->buf)
+ strbuf_init(sb, 0);
+ return EOF;
+}
+#else
int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
{
int ch;
@@ -442,18 +484,22 @@ int strbuf_getwholeline(struct strbuf *sb, FILE *fp, int term)
return EOF;
strbuf_reset(sb);
- while ((ch = fgetc(fp)) != EOF) {
- strbuf_grow(sb, 1);
+ flockfile(fp);
+ while ((ch = getc_unlocked(fp)) != EOF) {
+ if (!strbuf_avail(sb))
+ strbuf_grow(sb, 1);
sb->buf[sb->len++] = ch;
if (ch == term)
break;
}
+ funlockfile(fp);
if (ch == EOF && sb->len == 0)
return EOF;
sb->buf[sb->len] = '\0';
return 0;
}
+#endif
int strbuf_getline(struct strbuf *sb, FILE *fp, int term)
{