Function pj_open_lib_internal

src/filemanager.cpp:1544–1712

}

static void *pj_open_lib_internal(
    PJ_CONTEXT *ctx, const char *name, const char *mode,
    void *(*open_file)(PJ_CONTEXT *, const char *, const char *),
    char *out_full_filename, size_t out_full_filename_size) {
    try {
        std::string fname;
        void *fid = nullptr;
        const char *tmpname = nullptr;
        std::string projLib;

        if (ctx == nullptr) {
            ctx = pj_get_default_ctx();
        }

        if (out_full_filename != nullptr && out_full_filename_size > 0)
            out_full_filename[0] = '\0';

        auto open_lib_from_paths = [&ctx, open_file, &name, &fname,
                                    &mode](const std::string &projLibPaths) {
            void *lib_fid = nullptr;
            auto paths = NS_PROJ::internal::split(projLibPaths, dirSeparator);
            for (const auto &path : paths) {
                fname = NS_PROJ::internal::stripQuotes(path);
                fname += DIR_CHAR;
                fname += name;
                lib_fid = open_file(ctx, fname.c_str(), mode);
                if (lib_fid)
                    break;
            }
            return lib_fid;
        };

        /* check if ~/name */
        if (is_tilde_slash(name))
            if (const char *home = getenv("HOME")) {
                fname = home;
                fname += DIR_CHAR;
                fname += name;
            } else
                return nullptr;

        /* or fixed path: /name, ./name or ../name  */
        else if (is_rel_or_absolute_filename(name)) {
            fname = name;
#ifdef _WIN32
            try {
                NS_PROJ::UTF8ToWString(name);
            } catch (const std::exception &) {
                fname = NS_PROJ::Win32Recode(name, CP_ACP, CP_UTF8);
            }
#endif
        }

        else if (starts_with(name, "http://") || starts_with(name, "https://"))
            fname = name;

        /* or try to use application provided file finder */
        else if (ctx->file_finder != nullptr &&