Initial import

tool/viz/bing.c

@@ -0,0 +1,93 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ This program is free software; you can redistribute it and/or modify         │
+│ it under the terms of the GNU General Public License as published by         │
+│ the Free Software Foundation; version 2 of the License.                      │
+│                                                                              │
+│ This program is distributed in the hope that it will be useful, but          │
+│ WITHOUT ANY WARRANTY; without even the implied warranty of                   │
+│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU             │
+│ General Public License for more details.                                     │
+│                                                                              │
+│ You should have received a copy of the GNU General Public License            │
+│ along with this program; if not, write to the Free Software                  │
+│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
+│ 02110-1301 USA                                                               │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/calls/calls.h"
+#include "libc/log/log.h"
+#include "libc/runtime/runtime.h"
+#include "libc/stdio/stdio.h"
+#include "libc/str/str.h"
+#include "libc/sysv/consts/ex.h"
+#include "libc/sysv/consts/exit.h"
+#include "libc/sysv/consts/fileno.h"
+#include "third_party/getopt/getopt.h"
+
+/**
+ * @fileoverview Bing: Binary → Glyphs.
+ * Intended for oldskool data science.
+ */
+
+int ispipe_;
+int newlines_;
+
+noreturn void ShowUsage(FILE *f, int rc) {
+  fputs(program_invocation_name, f);
+  fputs(": [-p] [-n] [FILE...]\n", f);
+  exit(rc);
+}
+
+void GetOpts(int argc, char *argv[]) {
+  int opt;
+  while ((opt = getopt(argc, argv, "hpn")) != -1) {
+    switch (opt) {
+      case 'p':
+        ispipe_ = true;
+        break;
+      case 'n':
+        newlines_ = true;
+        break;
+      case 'h':
+        ShowUsage(stdout, EXIT_SUCCESS);
+      default:
+        ShowUsage(stderr, EX_USAGE);
+    }
+  }
+}
+
+void bing(FILE *f) {
+  int c, c2;
+  while ((c = fgetc(f)) != -1) {
+    c2 = c == '\n' && newlines_ ? '\n' : kCp437[c & 0xff];
+    if (ispipe_) {
+      fputc(c, stdout);
+      fputwc(c2, stderr);
+    } else {
+      fputwc(c2, stdout);
+    }
+  }
+  fputc('\n', ispipe_ ? stderr : stdout);
+}
+
+int main(int argc, char *argv[]) {
+  FILE *f;
+  size_t i;
+  GetOpts(argc, argv);
+  if (optind < argc) {
+    for (i = optind; i < argc; ++i) {
+      if (!(f = fopen(argv[i], "rb"))) {
+        perror(argv[i]);
+        exit(EXIT_FAILURE);
+      }
+      bing(f);
+      fclose(f);
+    }
+  } else {
+    bing(stdin);
+  }
+  return 0;
+}