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    Annotation of /trunk/mkinitrd-magellan/busybox/util-linux/hexdump.c

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    Revision 984 - (hide annotations) (download)
    Sun May 30 11:32:42 2010 UTC (14 years ago) by niro
    File MIME type: text/plain
    File size: 3497 byte(s) 
    -updated to busybox-1.16.1 and enabled blkid/uuid support in default config
    1 niro 532 /* vi: set sw=4 ts=4: */
    2     /*
    3     * hexdump implementation for busybox
    4     * Based on code from util-linux v 2.11l
    5     *
    6     * Copyright (c) 1989
    7     * The Regents of the University of California. All rights reserved.
    8     *
    9     * Licensed under GPLv2 or later, see file License in this tarball for details.
    10     */
    11    
    12 niro 816 #include "libbb.h"
    13 niro 532 #include "dump.h"
    14    
    15 niro 816 /* This is a NOEXEC applet. Be very careful! */
    16    
    17     static void bb_dump_addfile(dumper_t *dumper, char *name)
    18 niro 532 {
    19     char *p;
    20     FILE *fp;
    21     char *buf;
    22    
    23 niro 816 fp = xfopen_for_read(name);
    24     while ((buf = xmalloc_fgetline(fp)) != NULL) {
    25 niro 532 p = skip_whitespace(buf);
    26     if (*p && (*p != '#')) {
    27 niro 816 bb_dump_add(dumper, p);
    28 niro 532 }
    29     free(buf);
    30     }
    31     fclose(fp);
    32     }
    33    
    34 niro 816 static const char *const add_strings[] = {
    35 niro 532 "\"%07.7_ax \" 16/1 \"%03o \" \"\\n\"", /* b */
    36     "\"%07.7_ax \" 16/1 \"%3_c \" \"\\n\"", /* c */
    37     "\"%07.7_ax \" 8/2 \" %05u \" \"\\n\"", /* d */
    38     "\"%07.7_ax \" 8/2 \" %06o \" \"\\n\"", /* o */
    39     "\"%07.7_ax \" 8/2 \" %04x \" \"\\n\"", /* x */
    40     };
    41    
    42 niro 816 static const char add_first[] ALIGN1 = "\"%07.7_Ax\n\"";
    43 niro 532
    44 niro 984 static const char hexdump_opts[] ALIGN1 = "bcdoxCe:f:n:s:v" IF_FEATURE_HEXDUMP_REVERSE("R");
    45 niro 532
    46     static const struct suffix_mult suffixes[] = {
    47 niro 816 { "b", 512 },
    48     { "k", 1024 },
    49     { "m", 1024*1024 },
    50 niro 984 { "", 0 }
    51 niro 532 };
    52    
    53 niro 816 int hexdump_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
    54 niro 532 int hexdump_main(int argc, char **argv)
    55     {
    56 niro 816 dumper_t *dumper = alloc_dumper();
    57 niro 532 const char *p;
    58     int ch;
    59 niro 816 #if ENABLE_FEATURE_HEXDUMP_REVERSE
    60     FILE *fp;
    61     smallint rdump = 0;
    62     #endif
    63 niro 532
    64 niro 816 if (ENABLE_HD && !applet_name[2]) { /* we are "hd" */
    65     ch = 'C';
    66     goto hd_applet;
    67     }
    68 niro 532
    69 niro 816 /* We cannot use getopt32: in hexdump options are cumulative.
    70     * E.g. "hexdump -C -C file" should dump each line twice */
    71 niro 532 while ((ch = getopt(argc, argv, hexdump_opts)) > 0) {
    72     p = strchr(hexdump_opts, ch);
    73     if (!p)
    74     bb_show_usage();
    75     if ((p - hexdump_opts) < 5) {
    76 niro 816 bb_dump_add(dumper, add_first);
    77     bb_dump_add(dumper, add_strings[(int)(p - hexdump_opts)]);
    78 niro 532 }
    79 niro 816 /* Save a little bit of space below by omitting the 'else's. */
    80     if (ch == 'C') {
    81     hd_applet:
    82     bb_dump_add(dumper, "\"%08.8_Ax\n\"");
    83     bb_dump_add(dumper, "\"%08.8_ax \" 8/1 \"%02x \" \" \" 8/1 \"%02x \" ");
    84     bb_dump_add(dumper, "\" |\" 16/1 \"%_p\" \"|\\n\"");
    85     }
    86     if (ch == 'e') {
    87     bb_dump_add(dumper, optarg);
    88     } /* else */
    89     if (ch == 'f') {
    90     bb_dump_addfile(dumper, optarg);
    91     } /* else */
    92     if (ch == 'n') {
    93     dumper->dump_length = xatoi_u(optarg);
    94     } /* else */
    95     if (ch == 's') {
    96     dumper->dump_skip = xatoul_range_sfx(optarg, 0, LONG_MAX, suffixes);
    97     } /* else */
    98     if (ch == 'v') {
    99     dumper->dump_vflag = ALL;
    100     }
    101     #if ENABLE_FEATURE_HEXDUMP_REVERSE
    102     if (ch == 'R') {
    103     rdump = 1;
    104     }
    105     #endif
    106 niro 532 }
    107    
    108 niro 816 if (!dumper->fshead) {
    109     bb_dump_add(dumper, add_first);
    110     bb_dump_add(dumper, "\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
    111 niro 532 }
    112    
    113     argv += optind;
    114    
    115 niro 816 #if !ENABLE_FEATURE_HEXDUMP_REVERSE
    116     return bb_dump_dump(dumper, argv);
    117     #else
    118     if (!rdump) {
    119     return bb_dump_dump(dumper, argv);
    120     }
    121    
    122     /* -R: reverse of 'hexdump -Cv' */
    123     fp = stdin;
    124     if (!*argv) {
    125     argv--;
    126     goto jump_in;
    127     }
    128    
    129     do {
    130     char *buf;
    131     fp = xfopen_for_read(*argv);
    132     jump_in:
    133     while ((buf = xmalloc_fgetline(fp)) != NULL) {
    134     p = buf;
    135     while (1) {
    136     /* skip address or previous byte */
    137     while (isxdigit(*p)) p++;
    138     while (*p == ' ') p++;
    139     /* '|' char will break the line */
    140     if (!isxdigit(*p) || sscanf(p, "%x ", &ch) != 1)
    141     break;
    142     putchar(ch);
    143     }
    144     free(buf);
    145     }
    146     fclose(fp);
    147     } while (*++argv);
    148    
    149     fflush_stdout_and_exit(EXIT_SUCCESS);
    150     #endif
    151 niro 532 }