The OGM reader uses a memory file as temporary storage for the chapters and not a file on disc.

src/common/chapters.cpp

@@ -264,18 +264,38 @@ parse_chapters(const string &file_name,
                bool *is_simple_format,
                KaxTags **tags) {
   mm_text_io_c *in;
+  KaxChapters *result;
 
   in = NULL;
+  result = NULL;
   try {
+
     in = new mm_text_io_c(new mm_file_io_c(file_name));
+    result = parse_chapters(in, min_tc, max_tc, offset, language, charset,
+                            exception_on_error, is_simple_format, tags);
+    delete in;
   } catch (...) {
+    if (in != NULL)
+      delete in;
     if (exception_on_error)
       throw error_c(mxsprintf("Could not open '%s' for reading.\n",
                               file_name.c_str()));
     else
       mxerror("Could not open '%s' for reading.\n", file_name.c_str());
   }
+  return result;
+}
 
+KaxChapters *
+parse_chapters(mm_text_io_c *in,
+               int64_t min_tc,
+               int64_t max_tc,
+               int64_t offset,
+               const string &language,
+               const string &charset,
+               bool exception_on_error,
+               bool *is_simple_format,
+               KaxTags **tags) {
   try {
     if (probe_simple_chapters(in)) {
       if (is_simple_format != NULL)
@@ -294,11 +314,9 @@ parse_chapters(const string &file_name,
       return parse_xml_chapters(in, min_tc, max_tc, offset,
                                 exception_on_error);
 
-    delete in;
-
     throw error_c(mxsprintf("Unknown file format for '%s'. It does not "
                             "contain a support chapter format.\n",
-                            file_name.c_str()));
+                            in->get_file_name().c_str()));
   } catch (error_c e) {
     if (exception_on_error)
       throw e;

src/common/chapters.h

@@ -42,6 +42,15 @@ parse_chapters(const string &file_name, int64_t min_tc = 0,
                bool *is_simple_format = NULL,
                KaxTags **tags = NULL);
 
+KaxChapters *MTX_DLL_API
+parse_chapters(mm_text_io_c *io, int64_t min_tc = 0,
+               int64_t max_tc = -1, int64_t offset = 0,
+               const string &language = "",
+               const string &charset = "",
+               bool exception_on_error = false,
+               bool *is_simple_format = NULL,
+               KaxTags **tags = NULL);
+
 bool MTX_DLL_API probe_xml_chapters(mm_text_io_c *in);
 KaxChapters *MTX_DLL_API parse_xml_chapters(mm_text_io_c *in, int64_t min_tc,
                                             int64_t max_tc, int64_t offset,

src/input/r_ogm.cpp

@@ -1088,11 +1088,11 @@ void
 ogm_reader_c::handle_stream_comments() {
   int i, j;
   ogm_demuxer_t *dmx;
-  char **comments, name[100];
+  char **comments;
   const char *iso639_2;
   vector<string> comment;
   vector<char *> chapters;
-  mm_io_c *out;
+  mm_mem_io_c *out;
   bool comments_in_utf8;
 
   for (i = 0; i < sdemuxers.size(); i++) {
@@ -1176,25 +1176,20 @@ ogm_reader_c::handle_stream_comments() {
       }
     }
     if ((chapters.size() > 0) && !ti->no_chapters && (kax_chapters == NULL)) {
-#if defined(SYS_WINDOWS)
-      sprintf(name, "mkvmerge-ogm-reader-chapters-%d-%d",
-              (int)GetCurrentProcessId(), (int)time(NULL));
-#else
-      sprintf(name, "mkvmerge-ogm-reader-chapters-%d-%d", getpid(),
-              (int)time(NULL));
-#endif
+      out = NULL;
       try {
-        out = new mm_file_io_c(name, MODE_WRITE);
+        out = new mm_mem_io_c(NULL, 0, 1000);
         out->write_bom("UTF-8");
         for (j = 0; j < chapters.size(); j++) {
           out->puts_unl(chapters[j]);
           out->puts_unl("\n");
         }
-        delete out;
-        kax_chapters = parse_chapters(name);
+        out->set_file_name(ti->fname);
+        kax_chapters = parse_chapters(new mm_text_io_c(out));
       } catch (...) {
+        if (out != NULL)
+          delete out;
       }
-      unlink(name);
     }
     for (j = 0; j < chapters.size(); j++)
       safefree(chapters[j]);

tests/results.txt

@@ -13,8 +13,8 @@ T_012ssa:9ecbc6bdfa5dec6495f99c7a97342844:passed:20040825-175700
 T_013vobsubs:8983288ea21b811fbb85d2ea272ccfe5:passed:20040825-175700
 T_014splitting_by_size:feeb1aba481b5a51d7142599359f2eac-5c639e8a08cf526d051fdf64f856c0d2:passed:20040825-175700
 T_015splitting_by_time:d0e769a906ec4eacc9c9af929add6474-c32e2d8c31e21e71f68875f2d9735565:passed:20040825-175700
-T_016cuesheet:01f54d36479c8ae4b4d357607a42a967:passed:20040825-175700
-T_017chapters:990b4b6b0931b7d52e589f715c919e10-4fff45a76f54708f881312aca04fd887:passed:20040825-175700
+T_016cuesheet:01f54d36479c8ae4b4d357607a42a967:failed:20040825-175700
+T_017chapters:990b4b6b0931b7d52e589f715c919e10-4fff45a76f54708f881312aca04fd887:failed:20040825-175700
 T_018attachments:bac27359516bab4984df3021aa295213-7e8e1f17615f157db0e98fba9ad88bad:passed:20040825-175700
 T_019attachments2:8d9ba46c4edbf3daf50175f9de2f87b4-94349d68c9b7d493ec0d5a49f7291e40-8d9ba46c4edbf3daf50175f9de2f87b4-5c639e8a08cf526d051fdf64f856c0d2:passed:20040825-175700
 T_020languages:7d853f21fe2d3e73b3ca0d29801e8d39:passed:20040825-234208