XEmacs 21.2-b1

[chise/xemacs-chise.git.1] / lib-src / hexl.c

diff --git a/lib-src/hexl.c b/lib-src/hexl.c
new file mode 100644 (file)
index 0000000..58855a0
--- /dev/null
+++ b/lib-src/hexl.c
@@ -0,0 +1,252 @@
+/* Synched up with: FSF 19.28. */
+
+#include <../src/config.h>
+
+#include <stdio.h>
+#include <ctype.h>
+#ifdef MSDOS
+#include <fcntl.h>
+#endif
+
+#if __STDC__ || defined(STDC_HEADERS)
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#endif
+
+#define DEFAULT_GROUPING       0x01
+#define DEFAULT_BASE           16
+
+#undef TRUE
+#undef FALSE
+#define TRUE  (1)
+#define FALSE (0)
+
+int base = DEFAULT_BASE, un_flag = FALSE, iso_flag = FALSE, endian = 1;
+int group_by = DEFAULT_GROUPING;
+char *progname;
+
+void usage (void);
+
+int
+main(argc, argv)
+     int argc;
+     char *argv[];
+{
+  register long address;
+  char string[18];
+  FILE *fp;
+  
+  progname = *argv++; --argc;
+  
+  /*
+  ** -hex              hex dump
+  ** -oct              Octal dump
+  ** -group-by-8-bits
+  ** -group-by-16-bits
+  ** -group-by-32-bits
+  ** -group-by-64-bits
+  ** -iso              iso character set.
+  ** -big-endian       Big Endian
+  ** -little-endian    Little Endian
+  ** -un || -de        from hexl format to binary.
+  ** --                End switch list.
+  ** <filename>        dump filename
+  ** -         (as filename == stdin)
+  */
+    
+  while (*argv && *argv[0] == '-' && (*argv)[1])
+    {
+      /* A switch! */
+      if (!strcmp (*argv, "--"))
+       {
+         --argc; argv++;
+         break;
+       }
+      else if (!strcmp (*argv, "-un") || !strcmp (*argv, "-de"))
+       {
+         un_flag = TRUE;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-hex"))
+       {
+         base = 16;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-iso"))
+       {
+         iso_flag = TRUE;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-oct"))
+       {
+         base = 8;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-big-endian"))
+       {
+         endian = 1;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-little-endian"))
+       {
+         endian = 0;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-group-by-8-bits"))
+       {
+         group_by = 0x00;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-group-by-16-bits"))
+       {
+         group_by = 0x01;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-group-by-32-bits"))
+       {
+         group_by = 0x03;
+         --argc; argv++;
+       }
+      else if (!strcmp (*argv, "-group-by-64-bits"))
+       {
+         group_by = 0x07;
+         endian = 0;
+         --argc; argv++;
+       }
+      else
+       {
+         (void) fprintf (stderr, "%s: invalid switch: \"%s\".\n", progname,
+                  *argv);
+         usage ();
+       }
+    }
+
+  do
+    {
+      if (*argv == NULL)
+       fp = stdin;
+      else
+       {
+         char *filename = *argv++;
+
+         if (!strcmp (filename, "-"))
+           fp = stdin;
+         else if ((fp = fopen (filename, "r")) == NULL)
+           {
+             perror (filename);
+             continue;
+           }
+       }
+
+      if (un_flag)
+       {
+         char buf[18];
+
+#ifdef MSDOS
+         (stdout)->_flag &= ~_IOTEXT; /* print binary */
+         _setmode (fileno (stdout), O_BINARY);
+#endif
+         for (;;)
+           {
+             register int i, c, d;
+
+#define hexchar(x) (isdigit (x) ? x - '0' : x - 'a' + 10)
+
+             fread (buf, 1, 10, fp); /* skip 10 bytes */
+
+             for (i=0; i < 16; ++i)
+               {
+                 if ((c = getc (fp)) == ' ' || c == EOF)
+                   break;
+
+                 d = getc (fp);
+                 c = hexchar (c) * 0x10 + hexchar (d);
+                 putchar (c);
+
+                 if ((i&group_by) == group_by)
+                   getc (fp);
+               }
+
+             if (c == ' ')
+               {
+                 while ((c = getc (fp)) != '\n' && c != EOF)
+                   ;
+
+                 if (c == EOF)
+                   break;
+               }
+             else
+               {
+                 if (i < 16)
+                   break;
+
+                 fread (buf, 1, 18, fp); /* skip 18 bytes */
+               }
+           }
+       }
+      else
+       {
+#ifdef MSDOS
+         (fp)->_flag &= ~_IOTEXT; /* read binary */
+         _setmode (fileno (fp), O_BINARY);
+#endif
+         address = 0;
+         string[0] = ' ';
+         string[17] = '\0';
+         for (;;)
+           {
+             register int i, c;
+
+             for (i=0; i < 16; ++i)
+               {
+                 if ((c = getc (fp)) == EOF)
+                   {
+                     if (!i)
+                       break;
+
+                     fputs ("  ", stdout);
+                     string[i+1] = '\0';
+                   }
+                 else
+                   {
+                     if (!i)
+                       (void) printf ("%08lx: ", address);
+
+                     if (iso_flag)
+                       string[i+1] =
+                         (c < 0x20 || (c >= 0x7F && c < 0xa0)) ? '.' :c;
+                     else
+                       string[i+1] = (c < 0x20 || c >= 0x7F) ? '.' : c;
+
+                     (void) printf ("%02x", c);
+                   }
+
+                 if ((i&group_by) == group_by)
+                   putchar (' ');
+               }
+
+             if (i)
+               puts (string);
+
+             if (c == EOF)
+               break;
+
+             address += 0x10;
+
+           }
+       }
+
+      if (fp != stdin)
+       (void) fclose (fp);
+
+    } while (*argv != NULL);
+  return 0;
+}
+
+void
+usage ()
+{
+  (void) fprintf (stderr, "usage: %s [-de] [-iso]\n", progname);
+  exit (1);
+}