253 lines
7.2 KiB
C
253 lines
7.2 KiB
C
/*
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* Bind helper struct and functions
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*/
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struct Bind_Helper{
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Binding_Unit *cursor, *start, *end;
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Binding_Unit *header, *group;
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int write_total;
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int error;
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};
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#define BH_ERR_NONE 0
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#define BH_ERR_MISSING_END 1
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#define BH_ERR_MISSING_BEGIN 2
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#define BH_ERR_OUT_OF_MEMORY 3
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inline void
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copy(char *dest, const char *src, int len){
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for (int i = 0; i < len; ++i){
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*dest++ = *src++;
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}
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}
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inline Binding_Unit*
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write_unit(Bind_Helper *helper, Binding_Unit unit){
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Binding_Unit *p = 0;
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helper->write_total += sizeof(*p);
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if (helper->error == 0 && helper->cursor != helper->end){
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p = helper->cursor++;
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*p = unit;
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}
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return p;
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}
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inline char*
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write_inline_string(Bind_Helper *helper, char *value, int len){
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char *dest = 0;
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helper->write_total += len;
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if (helper->error == 0){
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dest = (char*)helper->cursor;
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int cursor_advance = len + sizeof(*helper->cursor) - 1;
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cursor_advance /= sizeof(*helper->cursor);
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cursor_advance *= sizeof(*helper->cursor);
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helper->cursor += cursor_advance;
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if (helper->cursor < helper->end){
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copy(dest, value, len);
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}
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else{
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helper->error = BH_ERR_OUT_OF_MEMORY;
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}
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}
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return dest;
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}
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inline Bind_Helper
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begin_bind_helper(void *data, int size){
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Bind_Helper result;
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result.header = 0;
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result.group = 0;
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result.write_total = 0;
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result.error = 0;
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result.cursor = (Binding_Unit*)data;
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result.start = result.cursor;
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result.end = result.start + size / sizeof(*result.cursor);
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Binding_Unit unit;
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unit.type = unit_header;
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unit.header.total_size = sizeof(*result.header);
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result.header = write_unit(&result, unit);
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result.header->header.user_map_count = 0;
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return result;
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}
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inline void
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begin_map(Bind_Helper *helper, int mapid){
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if (helper->group != 0 && helper->error == 0) helper->error = BH_ERR_MISSING_END;
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if (!helper->error && mapid < mapid_global) ++helper->header->header.user_map_count;
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Binding_Unit unit;
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unit.type = unit_map_begin;
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unit.map_begin.mapid = mapid;
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helper->group = write_unit(helper, unit);
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helper->group->map_begin.bind_count = 0;
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}
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inline void
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end_map(Bind_Helper *helper){
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if (helper->group == 0 && helper->error == 0) helper->error = BH_ERR_MISSING_BEGIN;
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helper->group = 0;
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}
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struct Bind_Target{
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short code;
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unsigned char modifiers;
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};
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inline Bind_Target
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tkey(short code, unsigned char modifiers){
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Bind_Target target;
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target.code = code;
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target.modifiers = modifiers;
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return target;
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}
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inline void
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bind(Bind_Helper *helper, Bind_Target target, int cmdid){
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if (helper->group == 0 && helper->error == 0) helper->error = BH_ERR_MISSING_BEGIN;
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if (!helper->error) ++helper->group->map_begin.bind_count;
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Binding_Unit unit;
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unit.type = unit_binding;
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unit.binding.command_id = cmdid;
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unit.binding.code = target.code;
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unit.binding.modifiers = target.modifiers;
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write_unit(helper, unit);
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}
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inline void
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bind_me(Bind_Helper *helper, Bind_Target target, Custom_Command_Function *func){
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if (helper->group == 0 && helper->error == 0) helper->error = BH_ERR_MISSING_BEGIN;
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if (!helper->error) ++helper->group->map_begin.bind_count;
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Binding_Unit unit;
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unit.type = unit_callback;
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unit.callback.func = func;
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unit.callback.code = target.code;
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unit.callback.modifiers = target.modifiers;
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write_unit(helper, unit);
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}
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inline void
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bind(Bind_Helper *helper, short code, unsigned char modifiers, int cmdid){
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Bind_Target target;
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target = tkey(code, modifiers);
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bind(helper, target, cmdid);
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}
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inline void
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bind_me(Bind_Helper *helper, short code, unsigned char modifiers, Custom_Command_Function *func){
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Bind_Target target;
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target = tkey(code, modifiers);
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bind_me(helper, target, func);
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}
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inline void
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bind_vanilla_keys(Bind_Helper *helper, int cmdid){
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bind(helper, 0, 0, cmdid);
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}
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inline void
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bind_me_vanilla_keys(Bind_Helper *helper, Custom_Command_Function *func){
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bind_me(helper, 0, 0, func);
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}
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inline void
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bind_vanilla_keys(Bind_Helper *helper, unsigned char modifiers, int cmdid){
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bind(helper, 0, modifiers, cmdid);
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}
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inline void
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bind_me_vanilla_keys(Bind_Helper *helper, unsigned char modifiers, Custom_Command_Function *func){
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bind_me(helper, 0, modifiers, func);
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}
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inline void
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inherit_map(Bind_Helper *helper, int mapid){
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if (helper->group == 0 && helper->error == 0) helper->error = BH_ERR_MISSING_BEGIN;
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if (!helper->error && mapid < mapid_global) ++helper->header->header.user_map_count;
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Binding_Unit unit;
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unit.type = unit_inherit;
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unit.map_inherit.mapid = mapid;
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write_unit(helper, unit);
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}
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inline void
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set_hook(Bind_Helper *helper, int hook_id, Custom_Command_Function *func){
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Binding_Unit unit;
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unit.type = unit_hook;
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unit.hook.hook_id = hook_id;
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unit.hook.func = func;
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write_unit(helper, unit);
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}
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inline void
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end_bind_helper(Bind_Helper *helper){
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if (helper->header){
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helper->header->header.total_size = (int)(helper->cursor - helper->start);
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helper->header->header.error = helper->error;
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}
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}
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// NOTE(allen): Useful functions and overloads on app links
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inline void
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push_parameter(Application_Links *app, void *cmd_context, int param, int value){
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app->push_parameter(cmd_context, dynamic_int(param), dynamic_int(value));
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}
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inline void
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push_parameter(Application_Links *app, void *cmd_context, int param, const char *value, int value_len){
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char *value_copy = app->push_memory(cmd_context, value_len+1);
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copy(value_copy, value, value_len);
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value_copy[value_len] = 0;
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app->push_parameter(cmd_context, dynamic_int(param), dynamic_string(value_copy, value_len));
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}
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inline void
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push_parameter(Application_Links *app, void *cmd_context, const char *param, int param_len, int value){
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char *param_copy = app->push_memory(cmd_context, param_len+1);
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copy(param_copy, param, param_len);
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param_copy[param_len] = 0;
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app->push_parameter(cmd_context, dynamic_string(param_copy, param_len), dynamic_int(value));
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}
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inline void
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push_parameter(Application_Links *app, void *cmd_context, const char *param, int param_len, const char *value, int value_len){
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char *param_copy = app->push_memory(cmd_context, param_len+1);
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char *value_copy = app->push_memory(cmd_context, value_len+1);
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copy(param_copy, param, param_len);
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copy(value_copy, value, value_len);
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value_copy[value_len] = 0;
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param_copy[param_len] = 0;
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app->push_parameter(cmd_context, dynamic_string(param_copy, param_len), dynamic_string(value_copy, value_len));
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}
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inline String
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push_directory(Application_Links *app, void *cmd_context){
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String result;
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result.memory_size = 512;
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result.str = app->push_memory(cmd_context, result.memory_size);
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result.size = app->directory_get_hot(cmd_context, result.str, result.memory_size);
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return(result);
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}
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#define dir_string(d) ((d).str), ((d).size)
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#define exec_command_keep_stack app->exec_command_keep_stack
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#define clear_parameters app->clear_parameters
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#define get_active_buffer app->get_active_buffer
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#define exec_command(cmd_context, id) \
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exec_command_keep_stack(cmd_context, id); \
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clear_parameters(cmd_context)
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