1 files changed, 31 insertions, 0 deletions
diff --git a/io.c b/io.c
new file mode 100644
index 0000000..6c92b20
--- /dev/null
+++ b/io.c
@@ -0,0 +1,31 @@
+struct InFile {
+    const char* filename;
+    char* buf;
+};
+typedef struct InFile InFile;
+
+InFile* read_all(const char* filename) {
+    FILE* in;
+    if (strcmp(filename, "-") == 0) {
+        in = stdin;
+    } else {
+        in = fopen(filename, "rb");
+    }
+    if (!in) {
+        return NULL;
+    }
+    char* buf = calloc(1024 * 1024, sizeof(char));
+    char* cur = buf;
+    char* tmp = calloc(1024, sizeof(char));
+    while (fgets(tmp, 1024, in)) {
+        size_t len = strlen(tmp);
+        memcpy(cur, tmp, len);
+        cur += len;
+    }
+    fclose(in);
+
+    InFile* in_file = calloc(1, sizeof(InFile));
+    in_file->filename = filename;
+    in_file->buf = buf;
+    return in_file;
+}