entered into RCS

lib-src/hexl.c

@@ -0,0 +1,219 @@
+#include <stdio.h>
+#include <ctype.h>
+
+#define DEFAULT_GROUPING	0x01
+#define DEFAULT_BASE		16
+
+#undef TRUE
+#undef FALSE
+#define TRUE  (1)
+#define FALSE (0)
+
+extern void exit(), perror();
+
+int base = DEFAULT_BASE, un_flag = FALSE, iso_flag = FALSE, endian = 1;
+int group_by = DEFAULT_GROUPING;
+char *progname;
+
+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];
+
+	    for (;;)
+	    {
+		register int i, c, d;
+
+#define hexchar(x) (isdigit(x) ? x - '0' : x - 'a' + 10)
+
+		(void) 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);
+		    (void) putchar(c);
+
+		    if ((i&group_by) == group_by)
+			(void) getc(fp);
+		}
+
+		if (c == ' ')
+		{
+		    while ((c = getc(fp)) != '\n' && c != EOF)
+			;
+
+		    if (c == EOF)
+			break;
+		}
+		else
+		{
+		    if (i < 16)
+			break;
+
+		    (void) fread(buf, 1, 18, fp); /* skip 18 bytes */
+		}
+	    }
+	}
+	else
+	{
+	    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;
+
+			(void) fputs("  ", stdout);
+			string[i+1] = '\0';
+		    }
+		    else
+		    {
+			if (!i)
+			    (void) printf("%08x: ", 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)
+			(void) putchar(' ');
+		}
+
+		if (i)
+		    (void) puts(string);
+
+		if (c == EOF)
+		    break;
+
+		address += 0x10;
+
+	    }
+	}
+
+	if (fp != stdin)
+	    (void) close(fp);
+
+    } while (*argv != NULL);
+    return 0;
+}
+
+usage()
+{
+    (void) fprintf(stderr, "usage: %s [-de] [-iso]\n", progname);
+    exit(1);
+}