修改JSON以兼容APP配置

sane/gb_json.cpp

@@ -30,6 +30,29 @@ namespace gb
 
         return ret;
     }
+    static int load_mini_file(const char* file, std::string& cont)
+    {
+        FILE* src = fopen(file, "rb");
+        if (src)
+        {
+            size_t	size = 0;
+            char    *buf = NULL;
+
+            fseek(src, 0, SEEK_END);
+            size = ftell(src);
+            fseek(src, 0, SEEK_SET);
+            buf = new char[size + 4];
+            memset(buf, 0, size + 4);
+            fread(buf, 1, size, src);
+            fclose(src);
+            cont = std::string(buf, size);
+            delete[] buf;
+
+            return 0;
+        }
+        else
+            return errno;
+    }
 
     refer::refer() : ref_(1)
     {}
@@ -856,19 +879,209 @@ namespace gb
     }
 }
 
+namespace updater
+{
+    static std::string hg_model_from_pid(const char* pid)
+    {
+        if (strcmp(pid, "7823") == 0)
+            return "G200";
 
+        char    m[] = { 'G', pid[0], '0', '0', 0};
+
+        return std::string(m) + " - " + pid;
+    }
+    static std::string hv_model_from_pid(const char* pid)
+    {
+        std::string m("");
+        if (strcmp(pid, "1000") == 0)
+            m = "HW-1000NS";
+        else if (strcmp(pid, "1002") == 0)
+            m = "HW-1000";
+        else if (strcmp(pid, "7000") == 0)
+            m = "HW-7000NS";
+        else if (strcmp(pid, "7002") == 0)
+            m = "HW-7000";
+        else if (strcmp(pid, "7039") == 0)
+            m = "HW-7000NS";
+        else 
+            m = std::string("HW-") + pid;
+
+        return m + " - " + pid;
+    }
+    static std::string lsc_model_from_pid(const char* pid)
+    {
+        if (strcmp(pid, "8200") == 0)
+            return "G42S - 8200";
+        else
+        {
+            char    m[] = {'G', pid[1], pid[2], 'S', 0};
+
+            return std::string(m) + " - " + pid;
+        }
+    }
+    static std::string scanner_chinese_name_2_model(const char* cn)
+    {
+        static const char* hg = "\345\215\216\351\253\230",
+                        * hw = "\346\261\211\347\216\213",
+                        * lsc = "\347\253\213\346\200\235\350\276\260",
+                        * smy = "\346\211\253\346\217\217\344\273\252\342\200\224G",
+                        * f = strstr(cn, hg);
+        std::string     model("");
+        std::string(* model_from_pid)(const char* pid) = nullptr;
+
+        if (f == cn)
+        {
+            model = "HUAGOSCAN ";
+            model_from_pid = hg_model_from_pid;;
+        }
+        else if (strstr(cn, hw) == cn)
+        {
+            model = "Hanvon ";
+            model_from_pid = hv_model_from_pid;;
+        }
+        else if (strstr(cn, lsc) == cn)
+        {
+            model = "LANXUMSCAN ";
+            model_from_pid = lsc_model_from_pid;;
+        }
+        else
+            return "";
+
+        f = strstr(cn, smy);
+        if (!f)
+            return "";
+
+        f += strlen(smy);
+        model += model_from_pid(f);
+
+        return model;
+    }
+    static int update_app_config(const char* scanner_name, const char* jsn_txt, const char* path, gb::scanner_cfg::LPUDF lpfunc)
+    {
+        std::string scanner(""), jsn_str(jsn_txt);
+        std::vector<std::string>    efiles;
+
+        if ((unsigned char)scanner_name[0] > 0x7f)
+            scanner = scanner_chinese_name_2_model(scanner_name);
+        else
+            scanner = scanner_name;
+
+        gb::json* jsn = new gb::json();
+        int       cur_sel = -1, ret = 0;
+        gb::scanner_cfg* cfg = nullptr;
+        if (!jsn->attach_text(&jsn_str[0]))
+        {
+            jsn->release();
+            return EINVAL;
+        }
+
+        if (jsn->first_child(jsn_str))
+        {
+            gb::json* child = new gb::json();
+            if (child->attach_text(&jsn_str[0]))
+            {
+                if (!child->get_value("cur_sel", cur_sel))
+                    ret = EINVAL;
+            }
+            if (ret == 0)
+            {
+                cfg = new gb::scanner_cfg();
+                int ind = 0;
+                while (jsn->next_child(jsn_str))
+                {
+                    if (!child->attach_text(&jsn_str[0]))
+                    {
+                        ret = EINVAL;
+                        break;
+                    }
+
+                    std::string schm_name("");
+                    if (!child->get_value("scheme", schm_name))
+                    {
+                        ret = EINVAL;
+                        break;
+                    }
+
+                    gb::json* items = nullptr;
+                    if (!child->get_value("opts", items) || !items)
+                    {
+                        ret = EINVAL;
+                        break;
+                    }
+
+                    gb::sane_config_schm* schm = new gb::sane_config_schm();
+                    if (items->first_child(jsn_str))
+                    {
+                        do
+                        {
+                            std::string name(""), val("");
+                            gb::json* item = new gb::json();
+                            if (item->attach_text(&jsn_str[0]))
+                            {
+                                if (item->get_value("name", name) && item->get_value("value", val))
+                                {
+                                    name = lpfunc->title2name(name.c_str(), lpfunc->func_param);
+                                    lpfunc->trans_number(name.c_str(), val, lpfunc->func_param);
+                                    schm->set_value(name.c_str(), val.c_str(), val.length());
+                                    
+                                    val = "";
+                                    item->get_value("extra", val);
+                                    if (val.length() && gb::load_mini_file(val.c_str(), val) == 0)
+                                    {
+                                        schm->set_value(name.c_str(), val.c_str(), val.length(), true);
+                                        item->get_value("extra", val);
+                                        efiles.push_back(val);
+                                    }
+                                }
+                            }
+                            item->release();
+                        } while (items->next_child(jsn_str));
+                    }
+                    items->release();
+
+                    cfg->add_scheme(schm, schm_name.c_str());
+                    schm->release();
+                    if (ind++ == cur_sel)
+                        cfg->select_scheme(schm_name.c_str());
+                }
+            }
+            child->release();
+        }
+        jsn->release();
+        if (cfg)
+        {
+            if (ret == 0)
+            {
+                cfg->save((path + scanner + ".cfg").c_str());
+                for (auto& v : efiles)
+                    rename(v.c_str(), (v + "_bk").c_str());
+            }
+            cfg->release();
+        }
+
+        return ret;
+    }
+}
 namespace gb
 {
     std::string sane_config_schm::opt_data_appendix_("_data");
 
-    sane_config_schm::sane_config_schm() : jsn_(NULL), bkp_(NULL), in_setting_(false), scheme_name_("")
+    sane_config_schm::sane_config_schm(scanner_cfg* scanner) : jsn_(NULL), bkp_(NULL), in_setting_(false), scheme_name_("")
+        , scanner_(scanner)
     {
+        char    empty[8] = { "{}" };
+        jsn_ = new gb::json();
+        jsn_->attach_text(empty);
         def_val_ = new gb::json();
+        if (scanner_)
+            scanner_->add_ref();
     }
     sane_config_schm::~sane_config_schm()
     {
         clear();
         def_val_->release();
+        if (scanner_)
+            scanner_->release();
     }
 
     bool sane_config_schm::hex(unsigned char ch, unsigned char* val)
@@ -936,7 +1149,7 @@ namespace gb
         if (bkp_)
             bkp_->release();
         bkp_ = NULL;
-        file_ = L"";
+    //    file_ = "";
     }
     std::string sane_config_schm::to_hex_letter(const char* data, size_t bytes)
     {
@@ -977,36 +1190,22 @@ namespace gb
         return val;
     }
 
-    bool sane_config_schm::load_from_file(const wchar_t* file)
+    bool sane_config_schm::load_from_file(const char* file)
     {
         clear();
 
-        bool    ret = false;
+        std::string cont("");
-        FILE*   src = _wfopen(file, L"rb");
-        if (src)
-        {
-            size_t		size = 0;
-            char* buf = NULL;
-            gb::base64	b64;
 
-            fseek(src, 0, SEEK_END);
-            size = ftell(src);
-            fseek(src, 0, SEEK_SET);
-            buf = new char[size + 4];
-            memset(buf, 0, size + 4);
-            fread(buf, 1, size, src);
-            fclose(src);
-            ret = load_from_mem(buf);
-            delete[] buf;
-        }
         file_ = file;
+        if (gb::load_mini_file(file, cont))
+            return false;
 
-        return ret;
+        return load_from_mem(cont.c_str());
     }
-    bool sane_config_schm::load_from_mem(const char* mem)
+    bool sane_config_schm::load_from_mem(const char* mem, bool in_b64)
     {
         gb::base64	b64;
-        std::string stream(b64.decode(mem, lstrlenA(mem)));
+        std::string stream(in_b64 ? b64.decode(mem, lstrlenA(mem)) : mem);
 
         clear();
         jsn_ = new gb::json();
@@ -1020,7 +1219,7 @@ namespace gb
         
         return true;
     }
-    bool sane_config_schm::save_to(const wchar_t* file)
+    bool sane_config_schm::save_to(const char* file)
     {
         bool ret = false;
         std::string encode(to_text_stream());
@@ -1030,7 +1229,7 @@ namespace gb
 
         if (encode.length())
         {
-            FILE* dst = _wfopen(file, L"wb");
+            FILE* dst = fopen(file, "wb");
 
             if (dst)
             {
@@ -1091,13 +1290,7 @@ namespace gb
     }
     void sane_config_schm::config_changed(const char* name, const char* val, size_t bytes, bool extra)
     {
-        std::string hex_v(to_hex_letter(val, bytes)),
+        std::string hex_v(to_hex_letter(val, bytes));
-                    def(default_value(name));
-
-        if (hex_v == def)
-            jsn_->remove(name);
-        else
-            jsn_->set_value(name, hex_v.c_str());
 
         if (extra)
         {
@@ -1105,7 +1298,7 @@ namespace gb
         }
         else
         {
-            def = default_value(name);
+            std::string def = default_value(name);
             if (hex_v == def)
             {
                 jsn_->remove(name);
@@ -1130,6 +1323,15 @@ namespace gb
         if (jsn_)
             jsn_->remove(name);
     }
+    void sane_config_schm::set_value(const char* name, const char* val, size_t bytes, bool extra)
+    {
+        std::string hex_v(to_hex_letter(val, bytes));
+
+        if (extra)
+            jsn_->set_value((name + sane_config_schm::opt_data_appendix_).c_str(), hex_v.c_str());
+        else
+            jsn_->set_value(name, hex_v.c_str());
+    }
     void sane_config_schm::end_setting(bool cancel)
     {
         if (in_setting_)
@@ -1158,22 +1360,26 @@ namespace gb
 
         return -1;
     }
-    std::string sane_config_schm::to_text_stream(void)
+    std::string sane_config_schm::to_text_stream(bool b64, bool with_ver)
     {
         if (jsn_)
         {
+            if(with_ver)
             {
                 char    ver[40] = { 0 };
                 sprintf_s(ver, "%u.%u", VERSION_MAIN, VERSION_SUB);
                 jsn_->set_value("ver", ver);
             }
 
-            std::string cont(jsn_->to_string(false)), encode("");
+            std::string cont(jsn_->to_string(false));
+            if (b64)
+            {
                 gb::base64	b64;
 
-            encode = b64.encode(cont.c_str(), cont.length());
+                cont = b64.encode(cont.c_str(), cont.length());
+            }
 
-            return encode;
+            return cont;
         }
         else
             return "";
@@ -1254,4 +1460,284 @@ namespace gb
 
     ///////////////////////////////////////////////////////////////////////////////////
     // scanner_cfg
+    std::string scanner_cfg::global_name_ = "global";
+    std::string scanner_cfg::cur_sel_ = "cur";
+    std::string scanner_cfg::default_setting_name_ = "\351\273\230\350\256\244\350\256\276\347\275\256";  // utf-8: 默认设置
+
+    scanner_cfg::scanner_cfg() : path_(""), scanner_name_(""), global_(new json())
+    {
+        init_version();
+        init_select();
+    }
+    scanner_cfg::~scanner_cfg()
+    {
+        clear();
+        global_->release();
+    }
+
+    bool scanner_cfg::update(const char* file, LPUDF func)
+    {
+        std::string cont(""), name(""), path(file);
+        int         ret = gb::load_mini_file(file, cont);
+        base64      b64;
+        json        *jsn = nullptr;
+        bool        ok = true;
+
+        if (ret)
+            return false;
+        else if (cont.empty())
+            return true;
+
+        cont = b64.decode(cont.c_str(), cont.length());
+        jsn = new json();
+        if (!jsn->attach_text(&cont[0]))
+        {
+            jsn->release();
+            return false;
+        }
+
+        cont = "";
+        ret = path.rfind(PATH_SYMBOL[0]);
+        if (ret++ != std::string::npos)
+            path.erase(ret);
+        if (jsn->first_child(cont, &name))
+        {
+            do
+            {
+                ok &= updater::update_app_config(name.c_str(), cont.c_str(), path.c_str(), func) == 0;
+            } while (jsn->next_child(cont, &name));
+        }
+        jsn->release();
+        if (ok)
+            rename(file, (std::string(file) + "_bk").c_str());
+
+        return true;
+    }
+
+    void scanner_cfg::clear(void)
+    {
+        global_->set_value("ver", "");
+        global_->set_value(scanner_cfg::cur_sel_.c_str(), -1);
+
+        for (size_t i = 0; i < schemes_.size(); ++i)
+            schemes_[i].schm->release();
+        schemes_.clear();
+        scanner_name_ = "";
+    }
+    void scanner_cfg::init_version(void)
+    {
+        char    vstr[40] = { 0 };
+
+        sprintf(vstr, "%u.%u", VERSION_MAIN, VERSION_SUB);
+        global_->set_value("ver", vstr);
+    }
+    void scanner_cfg::init_select(void)
+    {
+        global_->set_value(scanner_cfg::cur_sel_.c_str(), -1);
+    }
+    void scanner_cfg::walk_sibling_schemes(cJSON* first)
+    {
+        if (!first)
+            return;
+
+        cJSON* next = first->next;
+        std::string name(first->string ? "" : first->string),
+                    cont("");
+        CFGSCHM     sch;
+
+        first->next = nullptr;
+        cont = json::to_string(first, false);
+        if (name == scanner_cfg::global_name_)
+        {
+            global_->attach_text(&cont[0]);
+        }
+        else
+        {
+            sch.schm = new sane_config_schm();
+            if (sch.schm->load_from_mem(cont.c_str(), false))
+            {
+                sch.name = sane_config_schm::from_hex_letter(name.c_str(), name.length());
+                sch.schm->set_scheme_name(sch.name.c_str());
+                schemes_.push_back(sch);
+            }
+            else
+                sch.schm->release();
+        }
+
+        first->next = next;
+        walk_sibling_schemes(next);
+    }
+
+    int scanner_cfg::load_file(const char* file)
+    {
+        std::string cont("");
+        int ret = gb::load_mini_file(file, cont);
+
+        if (ret == 0)
+            ret = load_mem(cont.c_str());
+
+        if (ret == 0 && scanner_name_.empty())
+        {
+            const char* name = strrchr(file, PATH_SYMBOL[0]);
+            if (name++ == nullptr)
+                name = file;
+
+            scanner_name_ = name;
+            ret = scanner_name_.rfind('.');
+            if (ret != std::string::npos)
+                scanner_name_.erase(ret);
+            ret = 0;
+        }
+
+        return ret;
+    }
+    int scanner_cfg::load_mem(const char* mem)
+    {
+        cJSON* root = cJSON_Parse(mem);
+
+        if (!root)
+            return EINVAL;
+
+        clear();
+        walk_sibling_schemes(root->child);
+        cJSON_Delete(root);
+
+        return 0;
+    }
+    int scanner_cfg::save(const char* file)
+    {
+        if (!file && path_.empty() && scanner_name_.empty())
+            return EINVAL;
+
+        std::string cont("{\"" + scanner_cfg::global_name_ + "\":"),
+                    f(file ? file : path_ + scanner_name_),
+                    v("");
+        int         sel = -1;
+
+        if (!global_->get_value("ver", v) || v.empty())
+            init_version();
+        if (!global_->get_value(scanner_cfg::cur_sel_.c_str(), sel) || sel >= schemes_.size())
+            init_select();
+
+        cont += global_->to_string(false);
+        for (auto& v: schemes_)
+        {
+            cont += ",\"" + sane_config_schm::to_hex_letter(v.name.c_str(), v.name.length()) + "\":";
+            cont += v.schm->to_text_stream(false, false);
+        }
+        cont += "}";
+
+        base64  b64;
+        FILE* dst = fopen(f.c_str(), "wb");
+
+        if (!dst)
+            return errno;
+
+        f = b64.encode(cont.c_str(), cont.length());
+        fwrite(f.c_str(), 1, f.length(), dst);
+        fclose(dst);
+
+        return 0;
+    }
+
+    void scanner_cfg::get_all_schemes(std::vector<std::string>& schemes)
+    {
+        schemes.push_back(scanner_cfg::default_setting_name_);
+        for (auto& v : schemes_)
+            schemes.push_back(v.name);
+    }
+    sane_config_schm* scanner_cfg::get_scheme(const char* scheme_name)
+    {
+        sane_config_schm* found = nullptr;
+
+        if (scheme_name)
+        {
+            std::vector<CFGSCHM>::iterator it = std::find(schemes_.begin(), schemes_.end(), scheme_name);
+            if (it != schemes_.end())
+                found = it->schm;
+        }
+        else
+        {
+            int ind = -1;
+
+            global_->get_value(scanner_cfg::cur_sel_.c_str(), ind);
+            if (ind >= 0 && ind < schemes_.size())
+                found = schemes_[ind].schm;
+        }
+
+        if (found)
+            found->add_ref();
+
+        return found;
+    }
+    bool scanner_cfg::remove_scheme(const char* scheme_name)
+    {
+        std::vector<CFGSCHM>::iterator it = std::find(schemes_.begin(), schemes_.end(), scheme_name);
+
+        if (it != schemes_.end())
+        {
+            int id = it - schemes_.begin(),
+                ind = -1;
+
+            it->schm->release();
+            schemes_.erase(it);
+            global_->get_value(scanner_cfg::cur_sel_.c_str(), ind);
+            if (ind == id)
+                global_->set_value(scanner_cfg::cur_sel_.c_str(), -1);
+            else if (ind > id)
+                global_->set_value(scanner_cfg::cur_sel_.c_str(), ind - 1);
+
+            return true;
+        }
+
+        return false;
+    }
+    bool scanner_cfg::select_scheme(const char* scheme_name)
+    {
+        std::vector<CFGSCHM>::iterator it = std::find(schemes_.begin(), schemes_.end(), scheme_name);
+
+        if (it == schemes_.end())
+            global_->set_value(scanner_cfg::cur_sel_.c_str(), -1);
+        else
+            global_->set_value(scanner_cfg::cur_sel_.c_str(), it - schemes_.begin());
+
+        return true;
+    }
+
+    sane_config_schm* scanner_cfg::copy_scheme(const char* cp_from_name)    // for UI setting, call release() if not use anymore
+    {
+        if (!cp_from_name)
+            return nullptr;
+        else if (scanner_cfg::default_setting_name_ == cp_from_name)
+            return new sane_config_schm();
+        else
+        {
+            std::vector<CFGSCHM>::iterator it = std::find(schemes_.begin(), schemes_.end(), cp_from_name);
+            if (it == schemes_.end())
+                return nullptr;
+
+            std::string cont(it->schm->to_text_stream());
+            sane_config_schm* schm = new sane_config_schm();
+            schm->load_from_mem(cont.c_str());
+
+            return schm;
+        }
+    }
+    bool scanner_cfg::add_scheme(sane_config_schm* schm, const char* name)
+    {
+        if (name && std::find(schemes_.begin(), schemes_.end(), name) != schemes_.end())
+            return false;
+
+        CFGSCHM cs;
+        cs.name = name ? name : schm->get_scheme_name();
+        cs.schm = schm;
+        if (cs.name == scanner_cfg::global_name_)
+            return false;
+
+        schemes_.push_back(cs);
+        schm->set_scheme_name(cs.name.c_str());
+        schm->add_ref();
+
+        return true;
+    }
 }

sane/gb_json.h

@@ -2,6 +2,9 @@
 
 #if defined(WIN32) || defined(_WIN64)
 #include <Windows.h>
+#define PATH_SYMBOL "\\"
+#else
+#define PATH_SYMBOL "/"
 #endif
 
 // #include "cJSON.h"
@@ -12,6 +15,7 @@
 
 namespace gb
 {
+    class scanner_cfg;
     class refer
     {
         volatile long ref_;
@@ -101,7 +105,8 @@ namespace gb
     class sane_config_schm : public refer
     {
         std::string     scheme_name_;
-        std::wstring    file_;
+        scanner_cfg     *scanner_;
+        std::string     file_;
         json* jsn_;
         json* bkp_;
         json* def_val_;
@@ -109,25 +114,25 @@ namespace gb
         std::map<int, std::string>  id_name_;       // (id, default-val)
 
         void clear();
-        std::string to_hex_letter(const char* data, size_t bytes);
-        std::string from_hex_letter(const char* data, size_t bytes);
         std::string default_value(const char* name);
 
     protected:
         ~sane_config_schm();
 
     public:
-        sane_config_schm();
+        sane_config_schm(scanner_cfg* scanner = nullptr);
 
         static std::string opt_data_appendix_;
         static bool hex(unsigned char ch, unsigned char* val);
         static bool hex_char(const char* data, unsigned char* val);
+        static std::string to_hex_letter(const char* data, size_t bytes);
+        static std::string from_hex_letter(const char* data, size_t bytes);
         static bool is_option_data(std::string& name);  // reset baase option name into 'name' if name was option data, and return true
 
     public:
-        bool load_from_file(const wchar_t* file);
+        bool load_from_file(const char* file);
-        bool load_from_mem(const char* mem);
+        bool load_from_mem(const char* mem, bool in_b64 = true);
-        bool save_to(const wchar_t* file);
+        bool save_to(const char* file);
         void set_default_value(int sn, const char* name, const char* val, size_t bytes);
         bool first_config(std::string& name, std::string& val);
         bool next_config(std::string& name, std::string& val);
@@ -135,12 +140,82 @@ namespace gb
         void config_changed(const char* name, const char* val, size_t bytes, bool extra = false);
         void config_changed(int sn, const char* val, size_t bytes, bool extra = false);
         void remove_config(const char* name);
+        void set_value(const char* name, const char* val, size_t bytes, bool extra = false);
         void end_setting(bool cancel);
         int id_from_name(const char* name);
-        std::string to_text_stream(void);
+        std::string to_text_stream(bool b64 = true, bool with_ver = true);
         std::string get_version(void);
         std::string get_scheme_name(void);
         void set_scheme_name(const char* name);
         void update(bool(__stdcall* is_float)(int, void*), void* param, const char*(__stdcall* t2n)(const char*), std::string* discard = NULL);
     };
+
+    class scanner_cfg : public refer
+    {
+        // format: in base64
+        // 
+        // {
+        //      "global": {
+        //          "ver": "4.33",
+        //          "cur": -1
+        //      },
+        //      "scheme_1": sane_config_schm*,
+        //      "scheme_2": sane_config_schm*,
+        //      "scheme_3": sane_config_schm*,
+        //      ...
+        // }
+        //
+        std::string     path_;
+        std::string     scanner_name_;  // scanner type: HUAGOSCAN G100 - 0100
+        json            *global_;       // version, current scheme, ...
+        
+        typedef struct _cfg_schm
+        {
+            std::string     name;
+            sane_config_schm* schm;
+
+            bool operator==(const char* n)
+            {
+                return name == n;
+            }
+        }CFGSCHM;
+        std::vector<CFGSCHM>    schemes_;
+
+        static std::string global_name_;
+        static std::string cur_sel_;
+        static std::string default_setting_name_;
+
+        void clear(void);
+        void init_version(void);
+        void init_select(void);
+        void walk_sibling_schemes(cJSON* first);
+
+    protected:
+        ~scanner_cfg();
+
+    public:
+        scanner_cfg();
+
+        typedef struct _update_func
+        {
+            void(__stdcall* trans_number)(const char* name, std::string& val, void* param);
+            const char* (__stdcall* title2name)(const char* title, void* param);
+            std::string discard_msg;    // update failed items ...
+            void* func_param;
+        }UDF, *LPUDF;
+        static bool update(const char* file, LPUDF func);
+
+    public:
+        int load_file(const char* file);
+        int load_mem(const char* mem);
+        int save(const char* file = nullptr);
+
+        void get_all_schemes(std::vector<std::string>& schemes);    // return all schemes name queue, the first is always be 'Default settings'
+        sane_config_schm* get_scheme(const char* scheme_name = nullptr/*return current scheme if was null*/);   // call sane_config_schm::release() if not use anymore
+        bool remove_scheme(const char* scheme_name);
+        bool select_scheme(const char* scheme_name);
+
+        sane_config_schm* copy_scheme(const char* cp_from_name);    // for UI setting, call release() if not use anymore
+        bool add_scheme(sane_config_schm* schm, const char* name = nullptr);
+    };
 }

sane/scanner.cpp

@@ -559,12 +559,12 @@ void scanner::update_config(void)
 }
 void scanner::load_config(const wchar_t* file)
 {
-	cfg_->load_from_file(file);
+	cfg_->load_from_file(local_trans::u2a(file).c_str());
 	update_config();
 }
 void scanner::save_config(const wchar_t* file)
 {
-	cfg_->save_to(file);
+	cfg_->save_to(local_trans::u2a(file).c_str());
 }
 void scanner::apply_config(void)
 {