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Change next-file naming functions to work on filename stems.

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This paves the way for writing metadata files with similar prefixes, and avoids confusing numbering of capture files with different extensions (e.g. BAD_0000.S16 and BBD_0000.S8).
This commit is contained in:
Jared Boone
2016-04-29 11:27:12 -07:00
parent dc8c34487f
commit 12b8a1b2a9
7 changed files with 29 additions and 34 deletions
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35
firmware/application/file.cpp
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@@ -94,22 +94,16 @@ static std::string find_last_file_matching_pattern(const std::string& pattern) {
return last_match;
}
static std::string increment_filename_ordinal(const std::string& filename) {
std::string result { filename };
static std::string remove_filename_extension(const std::string& filename) {
const auto extension_index = filename.find_last_of('.');
return filename.substr(0, extension_index);
}
static std::string increment_filename_stem_ordinal(const std::string& filename_stem) {
std::string result { filename_stem };
auto it = result.rbegin();
// Back up past extension.
for(; it != result.rend(); ++it) {
if( *it == '.' ) {
++it;
break;
}
}
if( it == result.rend() ) {
return { };
}
// Increment decimal number before the extension.
for(; it != result.rend(); ++it) {
const auto c = *it;
@@ -128,15 +122,16 @@ static std::string increment_filename_ordinal(const std::string& filename) {
return result;
}
std::string next_filename_matching_pattern(const std::string& filename_pattern) {
auto filename = find_last_file_matching_pattern(filename_pattern);
if( filename.empty() ) {
filename = filename_pattern;
std::replace(std::begin(filename), std::end(filename), '?', '0');
std::string next_filename_stem_matching_pattern(const std::string& filename_stem_pattern) {
const auto filename = find_last_file_matching_pattern(filename_stem_pattern + ".*");
auto filename_stem = remove_filename_extension(filename);
if( filename_stem.empty() ) {
filename_stem = filename_stem_pattern;
std::replace(std::begin(filename_stem), std::end(filename_stem), '?', '0');
} else {
filename = increment_filename_ordinal(filename);
filename_stem = increment_filename_stem_ordinal(filename_stem);
}
return filename;
return filename_stem;
}
namespace std {