diff options
Diffstat (limited to 'minui')
| -rw-r--r-- | minui/include/minui/minui.h | 4 | ||||
| -rw-r--r-- | minui/resources.cpp | 35 |
2 files changed, 39 insertions, 0 deletions
diff --git a/minui/include/minui/minui.h b/minui/include/minui/minui.h index 017ddde75..27e603136 100644 --- a/minui/include/minui/minui.h +++ b/minui/include/minui/minui.h @@ -21,6 +21,7 @@ #include <functional> #include <string> +#include <vector> // // Graphics. @@ -129,6 +130,9 @@ int res_create_alpha_surface(const char* name, GRSurface** pSurface); int res_create_localized_alpha_surface(const char* name, const char* locale, GRSurface** pSurface); +// Return a list of locale strings embedded in |png_name|. Return a empty list in case of failure. +std::vector<std::string> get_locales_in_png(const std::string& png_name); + // Free a surface allocated by any of the res_create_*_surface() // functions. void res_free_surface(GRSurface* surface); diff --git a/minui/resources.cpp b/minui/resources.cpp index 8f8d36d27..756f29d21 100644 --- a/minui/resources.cpp +++ b/minui/resources.cpp @@ -396,6 +396,41 @@ bool matches_locale(const std::string& prefix, const std::string& locale) { return std::regex_match(locale, loc_regex); } +std::vector<std::string> get_locales_in_png(const std::string& png_name) { + png_structp png_ptr = nullptr; + png_infop info_ptr = nullptr; + png_uint_32 width, height; + png_byte channels; + + int status = open_png(png_name.c_str(), &png_ptr, &info_ptr, &width, &height, &channels); + if (status < 0) { + printf("Failed to open %s\n", png_name.c_str()); + return {}; + } + if (channels != 1) { + printf("Expect input png to have 1 data channel, this file has %d\n", channels); + png_destroy_read_struct(&png_ptr, &info_ptr, nullptr); + return {}; + } + + std::vector<std::string> result; + std::vector<unsigned char> row(width); + for (png_uint_32 y = 0; y < height; ++y) { + png_read_row(png_ptr, row.data(), nullptr); + int h = (row[3] << 8) | row[2]; + std::string loc(reinterpret_cast<char*>(&row[5])); + if (!loc.empty()) { + result.push_back(loc); + } + for (int i = 0; i < h; ++i, ++y) { + png_read_row(png_ptr, row.data(), NULL); + } + } + + png_destroy_read_struct(&png_ptr, &info_ptr, nullptr); + return result; +} + int res_create_localized_alpha_surface(const char* name, const char* locale, GRSurface** pSurface) { |