some libs done

lib/e.h

@@ -0,0 +1,9 @@
+#ifndef ERROR_H
+#define ERROR_H
+
+typedef struct {
+  int stat;
+  const char *src;
+} error_t;
+
+#endif

lib/file.c

@@ -0,0 +1,22 @@
+#include "file.h"
+#include "e.h"
+#include <errno.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <string.h>
+
+error_t write(char *path, char *format, ...) {
+  error_t err;
+  va_list args;
+  va_start(args, format);
+  FILE *fp;
+  fp = fopen(path, "w");
+  if (!fp) {
+    err.stat = errno;
+    err.src = strerror(errno);
+  }
+  vfprintf(fp, format, args);
+  fclose(fp);
+  va_end(args);
+  return err;
+}

lib/file.h

@@ -0,0 +1,9 @@
+#ifndef FILE_H
+#define FILE_H
+
+#include "e.h"
+
+error_t write(char *, char *, ...);
+void printfn(char *, ...);
+
+#endif

lib/print.c

@@ -0,0 +1,14 @@
+#include "print.h"
+#include <stdarg.h>
+#include <stdio.h>
+
+int printfn(char *format, ...) {
+  int len;
+  va_list args;
+  va_start(args, format);
+  printf("yait: ");
+  len = vfprintf(stderr, format, args);
+  putchar('\n');
+  va_end(args);
+  return len;
+}

lib/print.h

@@ -0,0 +1,9 @@
+#ifndef PRINT_H
+#define PRINT_H
+
+#include <stdarg.h>
+#include <stdio.h>
+
+int printfn(char *, ...);
+
+#endif