update

main.odin

@@ -24,10 +24,8 @@ main :: proc() {
 		print_usage()
 	}
 	filename := os.args[1]
-	success := load_ppm(&file, filename)
-
-	if !success {
-		fmt.eprintfln("Could not load file %s", filename)
+	if ok, err := load_ppm(&file, filename); !ok {
+		fmt.eprintfln("ERROR: Failed to load file '%s': %s ", filename, os.error_string(err))
 		os.exit(1)
 	}
 	ppm_parse(&file)

ppm.odin

@@ -1,9 +1,7 @@
 package main
 
-import "core:c"
 import "core:fmt"
 import "core:os"
-import "core:os/os2"
 import "core:strconv"
 import "core:strings"
 
@@ -19,8 +17,8 @@ Ppm_Pixel :: struct {
 }
 
 Ppm_file :: struct {
-	file:        os2.File, //TODO: use this instead perhaps?
-	data:        []byte,
+	file:        os.File, //TODO: use this instead perhaps?
+	data:        []u8,
 	magic_num:   PPM_MAGIC_NUMBER,
 	width:       int,
 	height:      int,
@@ -28,19 +26,21 @@ Ppm_file :: struct {
 	pixels:      []Ppm_Pixel,
 }
 
-load_ppm :: proc(ppm_file: ^Ppm_file, filename: string) -> (success: bool) {
+load_ppm :: proc(ppm_file: ^Ppm_file, filename: string) -> (bool, os.Error) {
+	if ppm_file == nil || len(filename) == 0 {
+		return false, .Not_Exist
+	}
 	if !strings.has_suffix(filename, ".ppm") {
-		fmt.eprintfln("ERROR: File %s does not have a valid ppm extention (.ppm)", filename)
-		return false
+		return false, .Invalid_File
 	}
 
-	succ: bool
-	ppm_file.data, succ = os.read_entire_file_from_filename(filename, context.temp_allocator)
-	if !succ {
-		fmt.eprintfln("ERROR: Failed to load file: %s ", filename)
-		return false
+	//if file is valid, opemn but check error too!
+	err: os.Error
+	ppm_file.data, err = os.read_entire_file_from_path(filename, context.temp_allocator)
+	if err != nil {
+		return false, err
 	}
-	return true
+	return true, err
 }
 
 //TODO: handle errors and err return type (success: bool?, err: ErrorType?)