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Fixed SSA/ASS detection for files produced by Aegis Sub which does not include a line with "[script info]" in the file.

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This commit is contained in:
Moritz Bunkus 2007-07-19 11:20:45 +00:00
parent e38963c37e
commit 42a1924934
2 changed files with 17 additions and 13 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2007-07-19 Moritz Bunkus <moritz@bunkus.org>
* mkvmerge: enhancement: Fixed SSA/ASS detection for files
produced by Aegis Sub which doesn't include a line with '[script
info]' in the file.
2007-07-07 Moritz Bunkus <moritz@bunkus.org>
* mmg: enhancement: Added another option how mmg choses the

24
src/input/r_ssa.cpp
View File

@ -38,7 +38,12 @@ ssa_reader_c::probe_file(mm_text_io_c *io,
int64_t size) {
string line;
int line_number;
pcrecpp::RE_Options opt_caseless;
opt_caseless.set_caseless(true);
pcrecpp::RE comment_re("^\\s*;");
pcrecpp::RE script_info_re("^\\s*\\[script\\s+info\\]", opt_caseless);
pcrecpp::RE styles_re("^\\s*\\[V4\\+?\\s+Styles\\]", opt_caseless);
try {
line_number = 0;
@ -46,26 +51,19 @@ ssa_reader_c::probe_file(mm_text_io_c *io,
while (io->getline2(line)) {
++line_number;
strip(line, true);
// Read at most 100 lines.
if (100 < line_number)
return 0;
// This is the line mkvmerge is looking for: positive match.
if (!strcasecmp(line.c_str(), "[script info]")) {
if (script_info_re.PartialMatch(line) || styles_re.PartialMatch(line)) {
io->setFilePointer(0, seek_beginning);
return 1;
}
// Read at most 500 lines.
if (line_number > 500)
return 0;
// Allow for empty lines and comments.
if (comment_re.PartialMatch(line) || (line == ""))
continue;
// It's something else: negative match.
return 0;
}
} catch (...) {
}
return 0;
}