Change example to use broken memory loader

svn path=/import/jshaw/libsprite/; revision=10015

1 files changed, 33 insertions, 6 deletions

diff --git a/trunk/example.c b/trunk/example.c
index 7325c4a..c42756d 100644
--- a/trunk/example.c
+++ b/trunk/example.c
@@ -32,6 +32,29 @@ void sdl_blank(SDL_Surface* surface)
 	}
 }
 
+int load_file_to_memory(const char *filename, uint8_t **result)
+{
+	int size = 0;
+	FILE *f = fopen(filename, "rb");
+	if (f == NULL) 
+	{
+		*result = NULL;
+		return -1; // -1 means file opening fail
+	}
+	fseek(f, 0, SEEK_END);
+	size = ftell(f);
+	fseek(f, 0, SEEK_SET);
+	*result = (uint8_t *)malloc(size+1);
+	if ((unsigned int) size != fread(*result, sizeof(char), size, f))
+	{
+		free(*result);
+		return -2; // -2 means file reading fail
+	}
+	fclose(f);
+	(*result)[size] = 0;
+	return size;
+}
+
 int main(int argc, char *argv[])
 {
 	if (argc < 2) {
@@ -46,18 +69,21 @@ int main(int argc, char *argv[])
 	atexit(SDL_Quit);
 
 	char* filename = argv[1];
+	uint8_t* content;
 
-	FILE* f = fopen(filename, "rb");
-	if (f == NULL) {
+	int size = load_file_to_memory(filename, &content);
+	if (size < 0) {
 		printf("Can't load spritefile %s\n", filename);
 		exit(EXIT_FAILURE);
+	} else {
+		printf("Loaded file of size %d into memory", size);
 	}
 
-	struct rosprite_file_context* ctx = rosprite_create_file_context(f);
+	struct rosprite_mem_context* ctx = rosprite_create_mem_context(content, size);
 
 	printf("Loading %s\n", filename);
 
-	struct rosprite_area* sprite_area = rosprite_load(rosprite_file_reader, ctx);
+	struct rosprite_area* sprite_area = rosprite_load(rosprite_mem_reader, ctx);
 	printf("sprite_count %u\n", sprite_area->sprite_count);
 	printf("extension_size %u\n", sprite_area->extension_size);
 
@@ -94,9 +120,10 @@ int main(int argc, char *argv[])
 		fgetc(stdin);
 	}
 
-	fclose(f);
-	rosprite_destroy_file_context(ctx);
+	rosprite_destroy_mem_context(ctx);
 	rosprite_destroy_sprite_area(sprite_area);
 
 	return EXIT_SUCCESS;
 }
+
+