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Factor out an UpperMap for case-insensitive matching

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This commit is contained in:
Rangi42
2025-07-27 23:14:52 -04:00
parent d16751f56a
commit 75aed1afd5
8 changed files with 87 additions and 84 deletions
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37
src/gfx/pal_spec.cpp
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@@ -15,11 +15,12 @@
#include <string.h>
#include <string>
#include <string_view>
#include <tuple>
#include <utility>
#include "diagnostics.hpp"
#include "helpers.hpp"
#include "platform.hpp"
#include "util.hpp" // UpperMap
#include "gfx/main.hpp"
#include "gfx/png.hpp"
@@ -668,36 +669,30 @@ void parseExternalPalSpec(char const *arg) {
}
char const *path = ptr + 1;
static std::array parsers{
std::tuple{"PSP", &parsePSPFile, std::ios::in },
std::tuple{"GPL", &parseGPLFile, std::ios::in },
std::tuple{"HEX", &parseHEXFile, std::ios::in },
std::tuple{"ACT", &parseACTFile, std::ios::binary},
std::tuple{"ACO", &parseACOFile, std::ios::binary},
std::tuple{"GBC", &parseGBCFile, std::ios::binary},
std::tuple{"PNG", &parsePNGFile, std::ios::binary},
static UpperMap<std::pair<void (*)(char const *, std::filebuf &), bool>> const parsers{
{"PSP", std::pair{&parsePSPFile, false}},
{"GPL", std::pair{&parseGPLFile, false}},
{"HEX", std::pair{&parseHEXFile, false}},
{"ACT", std::pair{&parseACTFile, true} },
{"ACO", std::pair{&parseACOFile, true} },
{"GBC", std::pair{&parseGBCFile, true} },
{"PNG", std::pair{&parsePNGFile, true} },
};
auto iter = std::find_if(RANGE(parsers), [&arg, &ptr](auto const &parser) {
return strncasecmp(arg, std::get<0>(parser), ptr - arg) == 0;
});
if (iter == parsers.end()) {
error(
"Unknown external palette format \"%.*s\"",
static_cast<int>(std::min(ptr - arg, static_cast<decltype(ptr - arg)>(INT_MAX))),
arg
);
std::string format{arg, ptr};
auto search = parsers.find(format);
if (search == parsers.end()) {
error("Unknown external palette format \"%s\"", format.c_str());
return;
}
std::filebuf file;
// Some parsers read the file in text mode, others in binary mode
if (!file.open(path, std::ios::in | std::get<2>(*iter))) {
if (!file.open(path, search->second.second ? std::ios::in | std::ios::binary : std::ios::in)) {
fatal("Failed to open palette file \"%s\": %s", path, strerror(errno));
return;
}
std::get<1> (*iter)(path, file);
search->second.first(path, file);
}
void parseDmgPalSpec(char const * const rawArg) {