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refactor(mkdwarfs_main): avoid potentially throwing globals

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This commit is contained in:
Marcus Holland-Moritz 2025-03-15 12:00:49 +01:00
parent 437f81a4b8
commit 830bed5d39
1 changed files with 71 additions and 67 deletions
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58
tools/src/mkdwarfs_main.cpp
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@ -241,15 +241,21 @@ constexpr std::array<level_defaults, 10> levels{{
// clang-format on
}};
const std::unordered_map<std::string, std::vector<std::string>>
categorize_defaults_common{
using categorize_defaults_type =
std::unordered_map<std::string, std::vector<std::string>>;
categorize_defaults_type const& categorize_defaults_common() {
static categorize_defaults_type const defaults{
// clang-format off
{"--compression", {"incompressible::null"}},
// clang-format on
};
const std::unordered_map<std::string, std::vector<std::string>>
categorize_defaults_fast{
return defaults;
}
categorize_defaults_type const& categorize_defaults_level(unsigned level) {
static categorize_defaults_type const defaults_fast{
// clang-format off
{"--order", {"pcmaudio/waveform::revpath", "fits/image::revpath"}},
{"--window-size", {"pcmaudio/waveform::0", "fits/image::0"}},
@ -268,8 +274,7 @@ const std::unordered_map<std::string, std::vector<std::string>>
// clang-format on
};
const std::unordered_map<std::string, std::vector<std::string>>
categorize_defaults_medium{
static categorize_defaults_type const defaults_medium{
// clang-format off
{"--order", {"pcmaudio/waveform::revpath", "fits/image::revpath"}},
{"--window-size", {"pcmaudio/waveform::20", "fits/image::0"}},
@ -288,8 +293,7 @@ const std::unordered_map<std::string, std::vector<std::string>>
// clang-format on
};
const std::unordered_map<std::string, std::vector<std::string>>
categorize_defaults_slow{
static categorize_defaults_type const defaults_slow{
// clang-format off
{"--order", {"fits/image::revpath"}},
{"--window-size", {"pcmaudio/waveform::16", "fits/image::0"}},
@ -308,23 +312,25 @@ const std::unordered_map<std::string, std::vector<std::string>>
// clang-format on
};
constexpr std::array<
std::unordered_map<std::string, std::vector<std::string>> const*, 10>
categorize_defaults_level{{
static constexpr std::array<categorize_defaults_type const*, 10>
defaults_level{{
// clang-format off
/* 0 */ &categorize_defaults_fast,
/* 1 */ &categorize_defaults_fast,
/* 2 */ &categorize_defaults_fast,
/* 3 */ &categorize_defaults_fast,
/* 4 */ &categorize_defaults_fast,
/* 5 */ &categorize_defaults_medium,
/* 6 */ &categorize_defaults_medium,
/* 7 */ &categorize_defaults_medium,
/* 8 */ &categorize_defaults_slow,
/* 9 */ &categorize_defaults_slow,
/* 0 */ &defaults_fast,
/* 1 */ &defaults_fast,
/* 2 */ &defaults_fast,
/* 3 */ &defaults_fast,
/* 4 */ &defaults_fast,
/* 5 */ &defaults_medium,
/* 6 */ &defaults_medium,
/* 7 */ &defaults_medium,
/* 8 */ &defaults_slow,
/* 9 */ &defaults_slow,
// clang-format on
}};
return *defaults_level.at(level);
}
constexpr unsigned default_level = 7;
class categorize_optval {
@ -350,9 +356,7 @@ class categorize_optval {
}
}
void
add_defaults(std::unordered_map<std::string, std::vector<std::string>> const&
defaults) {
void add_defaults(categorize_defaults_type const& defaults) {
for (auto const& [key, values] : defaults) {
auto& vs = defaults_[key];
vs.insert(vs.end(), values.begin(), values.end());
@ -360,7 +364,7 @@ class categorize_optval {
}
private:
std::unordered_map<std::string, std::vector<std::string>> defaults_;
categorize_defaults_type defaults_;
};
std::ostream& operator<<(std::ostream& os, categorize_optval const& optval) {
@ -777,8 +781,8 @@ int mkdwarfs_main(int argc, sys_char** argv, iolayer const& iol) {
auto const& defaults = levels[level];
categorizer_list.add_defaults(categorize_defaults_common);
categorizer_list.add_defaults(*categorize_defaults_level[level]);
categorizer_list.add_defaults(categorize_defaults_common());
categorizer_list.add_defaults(categorize_defaults_level(level));
if (!vm.count("block-size-bits")) {
sf_config.block_size_bits = defaults.block_size_bits;