| /* vi: set sw=4 ts=4: */ |
| /* |
| * od implementation for busybox |
| * Based on code from util-linux v 2.11l |
| * |
| * Copyright (c) 1990 |
| * The Regents of the University of California. All rights reserved. |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| * |
| * Original copyright notice is retained at the end of this file. |
| */ |
| |
| //usage:#if !ENABLE_DESKTOP |
| //usage:#define od_trivial_usage |
| //usage: "[-aBbcDdeFfHhIiLlOovXx] [FILE]" |
| //usage:#define od_full_usage "\n\n" |
| //usage: "Print FILE (or stdin) unambiguously, as octal bytes by default" |
| //usage:#endif |
| |
| #include "libbb.h" |
| #if ENABLE_DESKTOP |
| /* This one provides -t (busybox's own build script needs it) */ |
| #include "od_bloaty.c" |
| #else |
| |
| #include "dump.h" |
| |
| static void |
| odoffset(dumper_t *dumper, int argc, char ***argvp) |
| { |
| char *num, *p; |
| int base; |
| char *end; |
| |
| /* |
| * The offset syntax of od(1) was genuinely bizarre. First, if |
| * it started with a plus it had to be an offset. Otherwise, if |
| * there were at least two arguments, a number or lower-case 'x' |
| * followed by a number makes it an offset. By default it was |
| * octal; if it started with 'x' or '0x' it was hex. If it ended |
| * in a '.', it was decimal. If a 'b' or 'B' was appended, it |
| * multiplied the number by 512 or 1024 byte units. There was |
| * no way to assign a block count to a hex offset. |
| * |
| * We assumes it's a file if the offset is bad. |
| */ |
| p = **argvp; |
| |
| if (!p) { |
| /* hey someone is probably piping to us ... */ |
| return; |
| } |
| |
| if ((*p != '+') |
| && (argc < 2 |
| || (!isdigit(p[0]) |
| && ((p[0] != 'x') || !isxdigit(p[1]))))) |
| return; |
| |
| base = 0; |
| /* |
| * skip over leading '+', 'x[0-9a-fA-f]' or '0x', and |
| * set base. |
| */ |
| if (p[0] == '+') |
| ++p; |
| if (p[0] == 'x' && isxdigit(p[1])) { |
| ++p; |
| base = 16; |
| } else if (p[0] == '0' && p[1] == 'x') { |
| p += 2; |
| base = 16; |
| } |
| |
| /* skip over the number */ |
| if (base == 16) |
| for (num = p; isxdigit(*p); ++p) |
| continue; |
| else |
| for (num = p; isdigit(*p); ++p) |
| continue; |
| |
| /* check for no number */ |
| if (num == p) |
| return; |
| |
| /* if terminates with a '.', base is decimal */ |
| if (*p == '.') { |
| if (base) |
| return; |
| base = 10; |
| } |
| |
| dumper->dump_skip = strtol(num, &end, base ? base : 8); |
| |
| /* if end isn't the same as p, we got a non-octal digit */ |
| if (end != p) |
| dumper->dump_skip = 0; |
| else { |
| if (*p) { |
| if (*p == 'b') { |
| dumper->dump_skip *= 512; |
| ++p; |
| } else if (*p == 'B') { |
| dumper->dump_skip *= 1024; |
| ++p; |
| } |
| } |
| if (*p) |
| dumper->dump_skip = 0; |
| else { |
| ++*argvp; |
| /* |
| * If the offset uses a non-octal base, the base of |
| * the offset is changed as well. This isn't pretty, |
| * but it's easy. |
| */ |
| #define TYPE_OFFSET 7 |
| { |
| char x_or_d; |
| if (base == 16) { |
| x_or_d = 'x'; |
| goto DO_X_OR_D; |
| } |
| if (base == 10) { |
| x_or_d = 'd'; |
| DO_X_OR_D: |
| dumper->fshead->nextfu->fmt[TYPE_OFFSET] |
| = dumper->fshead->nextfs->nextfu->fmt[TYPE_OFFSET] |
| = x_or_d; |
| } |
| } |
| } |
| } |
| } |
| |
| static const char *const add_strings[] = { |
| "16/1 \"%3_u \" \"\\n\"", /* a */ |
| "8/2 \" %06o \" \"\\n\"", /* B, o */ |
| "16/1 \"%03o \" \"\\n\"", /* b */ |
| "16/1 \"%3_c \" \"\\n\"", /* c */ |
| "8/2 \" %05u \" \"\\n\"", /* d */ |
| "4/4 \" %010u \" \"\\n\"", /* D */ |
| "2/8 \" %21.14e \" \"\\n\"", /* e (undocumented in od), F */ |
| "4/4 \" %14.7e \" \"\\n\"", /* f */ |
| "4/4 \" %08x \" \"\\n\"", /* H, X */ |
| "8/2 \" %04x \" \"\\n\"", /* h, x */ |
| "4/4 \" %11d \" \"\\n\"", /* I, L, l */ |
| "8/2 \" %6d \" \"\\n\"", /* i */ |
| "4/4 \" %011o \" \"\\n\"", /* O */ |
| }; |
| |
| static const char od_opts[] ALIGN1 = "aBbcDdeFfHhIiLlOoXxv"; |
| |
| static const char od_o2si[] ALIGN1 = { |
| 0, 1, 2, 3, 5, |
| 4, 6, 6, 7, 8, |
| 9, 0xa, 0xb, 0xa, 0xa, |
| 0xb, 1, 8, 9, |
| }; |
| |
| int od_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int od_main(int argc, char **argv) |
| { |
| int ch; |
| int first = 1; |
| char *p; |
| dumper_t *dumper = alloc_dumper(); |
| |
| while ((ch = getopt(argc, argv, od_opts)) > 0) { |
| if (ch == 'v') { |
| dumper->dump_vflag = ALL; |
| } else if (((p = strchr(od_opts, ch)) != NULL) && (*p != '\0')) { |
| if (first) { |
| first = 0; |
| bb_dump_add(dumper, "\"%07.7_Ao\n\""); |
| bb_dump_add(dumper, "\"%07.7_ao \""); |
| } else { |
| bb_dump_add(dumper, "\" \""); |
| } |
| bb_dump_add(dumper, add_strings[(int)od_o2si[(p - od_opts)]]); |
| } else { /* P, p, s, w, or other unhandled */ |
| bb_show_usage(); |
| } |
| } |
| if (!dumper->fshead) { |
| bb_dump_add(dumper, "\"%07.7_Ao\n\""); |
| bb_dump_add(dumper, "\"%07.7_ao \" 8/2 \"%06o \" \"\\n\""); |
| } |
| |
| argc -= optind; |
| argv += optind; |
| |
| odoffset(dumper, argc, &argv); |
| |
| return bb_dump_dump(dumper, argv); |
| } |
| #endif /* ENABLE_DESKTOP */ |
| |
| /*- |
| * Copyright (c) 1990 The Regents of the University of California. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the University nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
