commit c5a12e1e994b7b7f039be42585b4780930d84bf1
author Radek Krejci <rkrejci@cesnet.cz> Wed May 27 17:09:59 2020 +0200
committer Radek Krejci <rkrejci@cesnet.cz> Fri Jun 12 15:05:46 2020 +0200
tree 247b16a0799d471faed3c10e4a61f7a694346945
parent baeb8384cec641ec8b6eb072d9ea6c9884cfe563

printers CHANGE reset (clean) output content by ly_out_reset()

src/printer.c

diff --git a/src/printer.c b/src/printer.c
index 4eb6b74..1fd8047 100644
--- a/src/printer.c
+++ b/src/printer.c
@@ -374,6 +374,10 @@
             LOGERR(NULL, LY_ESYS, "Seeking output file descriptor failed (%s).", strerror(errno));
             return LY_ESYS;
         }
+        if (errno != ESPIPE && ftruncate(out->method.fd, 0) == -1) {
+            LOGERR(NULL, LY_ESYS, "Truncating output file failed (%s).", strerror(errno));
+            return LY_ESYS;
+        }
         break;
     case LY_OUT_FDSTREAM:
     case LY_OUT_FILE:
@@ -382,8 +386,15 @@
             LOGERR(NULL, LY_ESYS, "Seeking output file stream failed (%s).", strerror(errno));
             return LY_ESYS;
         }
+        if (errno != ESPIPE && ftruncate(fileno(out->method.f), 0) == -1) {
+            LOGERR(NULL, LY_ESYS, "Truncating output file failed (%s).", strerror(errno));
+            return LY_ESYS;
+        }
         break;
     case LY_OUT_MEMORY:
+        if (out->method.mem.buf && *out->method.mem.buf) {
+            memset(*out->method.mem.buf, 0, out->method.mem.len);
+        }
         out->printed = 0;
         out->method.mem.len = 0;
         break;