buffer seek delimiter api

4coder_custom.h

@@ -219,7 +219,7 @@ struct Extra_Font{
 struct Buffer_Summary{
     // NOTE(allen): None of these members nor any of the data pointed to
     // by these members should be modified, I would have made them const...
-    // but that actually causes problems for C++ reasons.
+    // but that causes a lot problems for C++ reasons.
     int exists;
     int ready;
     int file_id;
@@ -257,32 +257,46 @@ extern "C"{
     typedef HOOK_SIG(Hook_Function);
 }
 
+// Command exectuion
 #define PUSH_PARAMETER_SIG(name) void name(void *cmd_context, Dynamic param, Dynamic value)
 #define PUSH_MEMORY_SIG(name) char* name(void *cmd_context, int len)
 #define EXECUTE_COMMAND_SIG(name) void name(void *cmd_context, int command_id)
 #define CLEAR_PARAMETERS_SIG(name) void name(void *cmd_context)
+
+// File system navigation
 #define DIRECTORY_GET_HOT_SIG(name) int name(void *cmd_context, char *buffer, int max)
 #define DIRECTORY_HAS_FILE_SIG(name) int name(String dir, char *filename)
 #define DIRECTORY_CD_SIG(name) int name(String *dir, char *rel_path)
 
+// Buffer manipulation
 #define GET_BUFFER_MAX_INDEX_SIG(name) int name(void *cmd_context)
 #define GET_BUFFER_SIG(name) Buffer_Summary name(void *cmd_context, int index)
 #define GET_ACTIVE_BUFFER_SIG(name) Buffer_Summary name(void *cmd_context)
 #define GET_BUFFER_BY_NAME(name) Buffer_Summary name(void *cmd_context, String filename)
 
+#define BUFFER_SEEK_DELIMITER_SIG(name) int name(void *cmd_context, Buffer_Summary *buffer, int start, char delim, int *out)
+#define BUFFER_READ_RANGE_SIG(name) int name(void *cmd_context, Buffer_Summary *buffer, int start, int end, char *out)
+
 extern "C"{
+    // Command exectuion
     typedef EXECUTE_COMMAND_SIG(Exec_Command_Function);
     typedef PUSH_PARAMETER_SIG(Push_Parameter_Function);
     typedef PUSH_MEMORY_SIG(Push_Memory_Function);
     typedef CLEAR_PARAMETERS_SIG(Clear_Parameters_Function);
+    
+    // File system navigation
     typedef DIRECTORY_GET_HOT_SIG(Directory_Get_Hot);
     typedef DIRECTORY_HAS_FILE_SIG(Directory_Has_File);
     typedef DIRECTORY_CD_SIG(Directory_CD);
     
+    // Buffer manipulation
     typedef GET_BUFFER_MAX_INDEX_SIG(Get_Buffer_Max_Index_Function);
     typedef GET_BUFFER_SIG(Get_Buffer_Function);
     typedef GET_ACTIVE_BUFFER_SIG(Get_Active_Buffer_Function);
     typedef GET_BUFFER_BY_NAME(Get_Buffer_By_Name_Function);
+    
+    typedef BUFFER_SEEK_DELIMITER_SIG(Buffer_Seek_Delimiter_Function);
+    typedef BUFFER_READ_RANGE_SIG(Buffer_Read_Range_Function);
 }
 
 struct Application_Links{
@@ -302,6 +316,9 @@ struct Application_Links{
     Get_Buffer_Function *get_buffer;
     Get_Active_Buffer_Function *get_active_buffer;
     Get_Buffer_By_Name_Function *get_buffer_by_name;
+    
+    Buffer_Seek_Delimiter_Function *buffer_seek_delimiter;
+    Buffer_Read_Range_Function *buffer_read_range;
 };
 
 struct Custom_API{

4ed.cpp

@@ -2138,6 +2138,31 @@ extern "C"{
         return(buffer);
     }
     
+    BUFFER_SEEK_DELIMITER_SIG(external_buffer_seek_delimiter){
+        Command_Data *cmd = (Command_Data*)cmd_context;
+        Editing_File *file;
+        Working_Set *working_set;
+        int result = 0;
+        int size;
+
+        if (buffer->exists){
+            working_set = cmd->working_set;
+            file = working_set->files + buffer->file_id;
+            if (!file->state.is_dummy && file_is_ready(file)){
+                size = buffer_size(&file->state.buffer);
+                result = 1;
+                if (start < size){
+                    *out = buffer_seek_delimiter(&file->state.buffer, start, delim);
+                    if (*out < 0) *out = 0;
+                    if (*out > size) *out = size;
+                }
+                fill_buffer_summary(buffer, file, working_set);
+            }
+        }
+
+        return(result);
+    }
+    
     DIRECTORY_GET_HOT_SIG(external_directory_get_hot){
         Command_Data *cmd = (Command_Data*)cmd_context;
         Hot_Directory *hot = &cmd->vars->hot_directory;

buffer/4coder_buffer_abstract.cpp

@@ -89,6 +89,26 @@ buffer_count_newlines(Buffer_Type *buffer, int start, int end){
     return(count);
 }
 
+internal_4tech int
+buffer_seek_delimiter(Buffer_Type *buffer, int pos, char delim){
+    Buffer_Stringify_Type loop;
+    char *data;
+    int end, size;
+    
+    size = buffer_size(buffer);
+    for(loop = buffer_stringify_loop(buffer, pos, size);
+        buffer_stringify_good(&loop);
+        buffer_stringify_next(&loop)){
+        end = loop.size + loop.absolute_pos;
+        data = loop.data - loop.absolute_pos;
+        for (; pos < end; ++pos){
+            if (data[pos] == delim) goto double_break;
+        }
+    }
+    double_break:
+    return(pos);
+}
+
 internal_4tech int
 buffer_seek_whitespace_down(Buffer_Type *buffer, int pos){
     Buffer_Stringify_Type loop;