Magellan Linux

  • Back to homepage
    • /[magellan-source]/trunk/mkinitrd-magellan/busybox/util-linux/hexdump.c

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

    Parent Directory Parent Directory | Revision Log Revision Log

    Revision 984 - (show annotations) (download)
    Sun May 30 11:32:42 2010 UTC (13 years, 11 months 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 /* 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 #include "libbb.h"
    13 #include "dump.h"
    14
    15 /* This is a NOEXEC applet. Be very careful! */
    16
    17 static void bb_dump_addfile(dumper_t *dumper, char *name)
    18 {
    19 char *p;
    20 FILE *fp;
    21 char *buf;
    22
    23 fp = xfopen_for_read(name);
    24 while ((buf = xmalloc_fgetline(fp)) != NULL) {
    25 p = skip_whitespace(buf);
    26 if (*p && (*p != '#')) {
    27 bb_dump_add(dumper, p);
    28 }
    29 free(buf);
    30 }
    31 fclose(fp);
    32 }
    33
    34 static const char *const add_strings[] = {
    35 "\"%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 static const char add_first[] ALIGN1 = "\"%07.7_Ax\n\"";
    43
    44 static const char hexdump_opts[] ALIGN1 = "bcdoxCe:f:n:s:v" IF_FEATURE_HEXDUMP_REVERSE("R");
    45
    46 static const struct suffix_mult suffixes[] = {
    47 { "b", 512 },
    48 { "k", 1024 },
    49 { "m", 1024*1024 },
    50 { "", 0 }
    51 };
    52
    53 int hexdump_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
    54 int hexdump_main(int argc, char **argv)
    55 {
    56 dumper_t *dumper = alloc_dumper();
    57 const char *p;
    58 int ch;
    59 #if ENABLE_FEATURE_HEXDUMP_REVERSE
    60 FILE *fp;
    61 smallint rdump = 0;
    62 #endif
    63
    64 if (ENABLE_HD && !applet_name[2]) { /* we are "hd" */
    65 ch = 'C';
    66 goto hd_applet;
    67 }
    68
    69 /* We cannot use getopt32: in hexdump options are cumulative.
    70 * E.g. "hexdump -C -C file" should dump each line twice */
    71 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 bb_dump_add(dumper, add_first);
    77 bb_dump_add(dumper, add_strings[(int)(p - hexdump_opts)]);
    78 }
    79 /* 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 }
    107
    108 if (!dumper->fshead) {
    109 bb_dump_add(dumper, add_first);
    110 bb_dump_add(dumper, "\"%07.7_ax \" 8/2 \"%04x \" \"\\n\"");
    111 }
    112
    113 argv += optind;
    114
    115 #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 }