X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=misc.c;h=474bf0249dd3d235a730a0a56c4a70ecdf6b5b86;hb=ba470dec5e37ffbde05425f48e7e9a64219aec2e;hp=50c38d57b7a1cc4673285c22a89214ad5fc1cb23;hpb=e8b2b6a5dcb04239bc431decb4adfc2bc4a10f25;p=PuTTY.git

diff --git a/misc.c b/misc.c
index 50c38d57..474bf024 100644
--- a/misc.c
+++ b/misc.c
@@ -141,6 +141,29 @@ char *dupvprintf(const char *fmt, va_list ap)
     }
 }
 
+/*
+ * Read an entire line of text from a file. Return a buffer
+ * malloced to be as big as necessary (caller must free).
+ */
+char *fgetline(FILE *fp)
+{
+    char *ret = snewn(512, char);
+    int size = 512, len = 0;
+    while (fgets(ret + len, size - len, fp)) {
+	len += strlen(ret + len);
+	if (ret[len-1] == '\n')
+	    break;		       /* got a newline, we're done */
+	size = len + 512;
+	ret = sresize(ret, size, char);
+    }
+    if (len == 0) {		       /* first fgets returned NULL */
+	sfree(ret);
+	return NULL;
+    }
+    ret[len] = '\0';
+    return ret;
+}
+
 /* ----------------------------------------------------------------------
  * Base64 encoding routine. This is required in public-key writing
  * but also in HTTP proxy handling, so it's centralised here.