From ee5792ed8874c65850bd53569089fb85183309ac Mon Sep 17 00:00:00 2001
From: Steve Howes <github@geekinter.net>
Date: Fri, 10 Feb 2023 20:12:32 +0000
Subject: [PATCH] Initial commit

---
 Makefile       | 11 +++++++++
 aseprite2ani.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)
 create mode 100644 Makefile
 create mode 100644 aseprite2ani.c

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..d77d4ae
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,11 @@
+CC = gcc
+CFLAGS = -Wall -Wextra -O2
+LDFLAGS = -ljansson
+
+aseprite2ani: aseprite2ani.c
+	$(CC) $(CFLAGS) -o $@ $< $(LDFLAGS)
+
+clean:
+	rm -f aseprite2ani
+
+.PHONY: clean
diff --git a/aseprite2ani.c b/aseprite2ani.c
new file mode 100644
index 0000000..d67772b
--- /dev/null
+++ b/aseprite2ani.c
@@ -0,0 +1,66 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <jansson.h>
+
+#define BUFFER_SIZE 1024
+
+int main(int argc, char *argv[]) {
+    if (argc < 3) {
+        printf("Usage: %s <aseprite_json_export> <output_file>\n", argv[0]);
+        return 1;
+    }
+
+    // Open the input file
+    FILE *input_file = fopen(argv[1], "r");
+    if (!input_file) {
+        printf("Error: Could not open input file %s\n", argv[1]);
+        return 1;
+    }
+
+    // Read the entire contents of the input file into a buffer
+    char buffer[BUFFER_SIZE];
+    size_t bytes_read = fread(buffer, 1, BUFFER_SIZE, input_file);
+    if (bytes_read == 0) {
+        printf("Error: Could not read any data from input file %s\n", argv[1]);
+        return 1;
+    }
+    buffer[bytes_read] = '\0';
+
+    // Parse the JSON data
+    json_error_t error;
+    json_t *root = json_loads(buffer, 0, &error);
+    if (!root) {
+        printf("Error: Could not parse JSON data: %s (line %d, column %d)\n", error.text, error.line, error.column);
+        return 1;
+    }
+
+    // Extract the frames object
+    json_t *frames = json_object_get(root, "frames");
+    if (!frames || !json_is_object(frames)) {
+        printf("Error: Could not find frames object in JSON data\n");
+        return 1;
+    }
+
+    // Open the output file
+    FILE *output_file = fopen(argv[2], "wb");
+    if (!output_file) {
+        printf("Error: Could not open output file %s\n", argv[2]);
+        return 1;
+    }
+
+    // Write the frame durations to the output file
+    const char *key;
+    json_t *value;
+    json_object_foreach(frames, key, value) {
+        int duration = json_integer_value(json_object_get(value, "duration"));
+        fwrite(&duration, sizeof(int), 1, output_file);
+    }
+
+    // Clean up
+    fclose(input_file);
+    fclose(output_file);
+    json_decref(root);
+
+    return 0;
+}