1 | /*
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2 | * Support code for the hexdump and od applets,
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3 | * based on code from util-linux v 2.11l
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4 | *
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5 | * Copyright (c) 1989
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6 | * The Regents of the University of California. All rights reserved.
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7 | *
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8 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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9 | *
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10 | * Original copyright notice is retained at the end of this file.
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11 | */
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12 |
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13 | #include "libbb.h"
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14 | #include <string.h>
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15 | #include <unistd.h>
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16 | #include <ctype.h> /* for isdigit() */
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17 | #include "dump.h"
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18 |
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19 | enum _vflag bb_dump_vflag = FIRST;
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20 | FS *bb_dump_fshead; /* head of format strings */
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21 | static FU *endfu;
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22 | static char **_argv;
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23 | static off_t savaddress; /* saved address/offset in stream */
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24 | static off_t eaddress; /* end address */
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25 | static off_t address; /* address/offset in stream */
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26 | off_t bb_dump_skip; /* bytes to skip */
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27 | static int exitval; /* final exit value */
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28 | int bb_dump_blocksize; /* data block size */
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29 | int bb_dump_length = -1; /* max bytes to read */
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30 |
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31 | static const char index_str[] = ".#-+ 0123456789";
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32 |
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33 | static const char size_conv_str[] =
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34 | "\x1\x4\x4\x4\x4\x4\x4\x8\x8\x8\x8\010cdiouxXeEfgG";
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35 |
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36 | static const char lcc[] = "diouxX";
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37 |
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38 | int bb_dump_size(FS * fs)
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39 | {
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40 | register FU *fu;
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41 | register int bcnt, cur_size;
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42 | register char *fmt;
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43 | const char *p;
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44 | int prec;
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45 |
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46 | /* figure out the data block bb_dump_size needed for each format unit */
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47 | for (cur_size = 0, fu = fs->nextfu; fu; fu = fu->nextfu) {
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48 | if (fu->bcnt) {
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49 | cur_size += fu->bcnt * fu->reps;
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50 | continue;
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51 | }
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52 | for (bcnt = prec = 0, fmt = fu->fmt; *fmt; ++fmt) {
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53 | if (*fmt != '%')
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54 | continue;
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55 | /*
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56 | * bb_dump_skip any special chars -- save precision in
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57 | * case it's a %s format.
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58 | */
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59 | while (strchr(index_str + 1, *++fmt));
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60 | if (*fmt == '.' && isdigit(*++fmt)) {
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61 | prec = atoi(fmt);
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62 | while (isdigit(*++fmt));
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63 | }
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64 | if (!(p = strchr(size_conv_str + 12, *fmt))) {
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65 | if (*fmt == 's') {
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66 | bcnt += prec;
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67 | } else if (*fmt == '_') {
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68 | ++fmt;
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69 | if ((*fmt == 'c') || (*fmt == 'p') || (*fmt == 'u')) {
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70 | bcnt += 1;
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71 | }
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72 | }
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73 | } else {
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74 | bcnt += size_conv_str[p - (size_conv_str + 12)];
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75 | }
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76 | }
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77 | cur_size += bcnt * fu->reps;
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78 | }
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79 | return (cur_size);
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80 | }
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81 |
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82 | static void rewrite(FS * fs)
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83 | {
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84 | enum { NOTOKAY, USEBCNT, USEPREC } sokay;
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85 | PR *pr, **nextpr = NULL;
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86 | FU *fu;
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87 | char *p1, *p2, *p3;
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88 | char savech, *fmtp;
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89 | const char *byte_count_str;
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90 | int nconv, prec = 0;
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91 |
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92 | for (fu = fs->nextfu; fu; fu = fu->nextfu) {
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93 | /*
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94 | * break each format unit into print units; each
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95 | * conversion character gets its own.
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96 | */
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97 | for (nconv = 0, fmtp = fu->fmt; *fmtp; nextpr = &pr->nextpr) {
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98 | /* NOSTRICT */
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99 | /* DBU:[dvae@cray.com] calloc so that forward ptrs start out NULL*/
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100 | pr = xzalloc(sizeof(PR));
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101 | if (!fu->nextpr)
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102 | fu->nextpr = pr;
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103 | /* ignore nextpr -- its unused inside the loop and is
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104 | * uninitialized 1st time thru.
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105 | */
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106 |
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107 | /* bb_dump_skip preceding text and up to the next % sign */
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108 | for (p1 = fmtp; *p1 && *p1 != '%'; ++p1);
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109 |
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110 | /* only text in the string */
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111 | if (!*p1) {
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112 | pr->fmt = fmtp;
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113 | pr->flags = F_TEXT;
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114 | break;
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115 | }
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116 |
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117 | /*
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118 | * get precision for %s -- if have a byte count, don't
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119 | * need it.
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120 | */
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121 | if (fu->bcnt) {
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122 | sokay = USEBCNT;
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123 | /* bb_dump_skip to conversion character */
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124 | for (++p1; strchr(index_str, *p1); ++p1);
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125 | } else {
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126 | /* bb_dump_skip any special chars, field width */
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127 | while (strchr(index_str + 1, *++p1));
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128 | if (*p1 == '.' && isdigit(*++p1)) {
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129 | sokay = USEPREC;
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130 | prec = atoi(p1);
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131 | while (isdigit(*++p1));
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132 | } else
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133 | sokay = NOTOKAY;
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134 | }
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135 |
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136 | p2 = p1 + 1; /* set end pointer */
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137 |
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138 | /*
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139 | * figure out the byte count for each conversion;
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140 | * rewrite the format as necessary, set up blank-
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141 | * pbb_dump_adding for end of data.
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142 | */
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143 |
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144 | if (*p1 == 'c') {
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145 | pr->flags = F_CHAR;
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146 | DO_BYTE_COUNT_1:
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147 | byte_count_str = "\001";
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148 | DO_BYTE_COUNT:
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149 | if (fu->bcnt) {
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150 | do {
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151 | if (fu->bcnt == *byte_count_str) {
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152 | break;
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153 | }
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154 | } while (*++byte_count_str);
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155 | }
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156 | /* Unlike the original, output the remainder of the format string. */
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157 | if (!*byte_count_str) {
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158 | bb_error_msg_and_die("bad byte count for conversion character %s.", p1);
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159 | }
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160 | pr->bcnt = *byte_count_str;
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161 | } else if (*p1 == 'l') {
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162 | ++p2;
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163 | ++p1;
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164 | DO_INT_CONV:
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165 | {
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166 | const char *e;
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167 | if (!(e = strchr(lcc, *p1))) {
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168 | goto DO_BAD_CONV_CHAR;
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169 | }
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170 | pr->flags = F_INT;
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171 | if (e > lcc + 1) {
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172 | pr->flags = F_UINT;
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173 | }
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174 | byte_count_str = "\004\002\001";
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175 | goto DO_BYTE_COUNT;
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176 | }
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177 | /* NOTREACHED */
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178 | } else if (strchr(lcc, *p1)) {
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179 | goto DO_INT_CONV;
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180 | } else if (strchr("eEfgG", *p1)) {
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181 | pr->flags = F_DBL;
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182 | byte_count_str = "\010\004";
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183 | goto DO_BYTE_COUNT;
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184 | } else if (*p1 == 's') {
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185 | pr->flags = F_STR;
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186 | if (sokay == USEBCNT) {
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187 | pr->bcnt = fu->bcnt;
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188 | } else if (sokay == USEPREC) {
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189 | pr->bcnt = prec;
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190 | } else { /* NOTOKAY */
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191 | bb_error_msg_and_die("%%s requires a precision or a byte count.");
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192 | }
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193 | } else if (*p1 == '_') {
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194 | ++p2;
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195 | switch (p1[1]) {
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196 | case 'A':
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197 | endfu = fu;
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198 | fu->flags |= F_IGNORE;
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199 | /* FALLTHROUGH */
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200 | case 'a':
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201 | pr->flags = F_ADDRESS;
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202 | ++p2;
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203 | if ((p1[2] != 'd') && (p1[2] != 'o') && (p1[2] != 'x')) {
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204 | goto DO_BAD_CONV_CHAR;
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205 | }
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206 | *p1 = p1[2];
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207 | break;
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208 | case 'c':
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209 | pr->flags = F_C;
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210 | /* *p1 = 'c'; set in conv_c */
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211 | goto DO_BYTE_COUNT_1;
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212 | case 'p':
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213 | pr->flags = F_P;
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214 | *p1 = 'c';
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215 | goto DO_BYTE_COUNT_1;
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216 | case 'u':
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217 | pr->flags = F_U;
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218 | /* *p1 = 'c'; set in conv_u */
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219 | goto DO_BYTE_COUNT_1;
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220 | default:
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221 | goto DO_BAD_CONV_CHAR;
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222 | }
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223 | } else {
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224 | DO_BAD_CONV_CHAR:
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225 | bb_error_msg_and_die("bad conversion character %%%s.\n", p1);
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226 | }
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227 |
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228 | /*
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229 | * copy to PR format string, set conversion character
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230 | * pointer, update original.
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231 | */
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232 | savech = *p2;
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233 | p1[1] = '\0';
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234 | pr->fmt = bb_xstrdup(fmtp);
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235 | *p2 = savech;
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236 | pr->cchar = pr->fmt + (p1 - fmtp);
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237 |
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238 | /* DBU:[dave@cray.com] w/o this, trailing fmt text, space is lost.
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239 | * Skip subsequent text and up to the next % sign and tack the
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240 | * additional text onto fmt: eg. if fmt is "%x is a HEX number",
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241 | * we lose the " is a HEX number" part of fmt.
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242 | */
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243 | for (p3 = p2; *p3 && *p3 != '%'; p3++);
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244 | if (p3 > p2)
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245 | {
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246 | savech = *p3;
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247 | *p3 = '\0';
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248 | pr->fmt = xrealloc(pr->fmt, strlen(pr->fmt)+(p3-p2)+1);
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249 | strcat(pr->fmt, p2);
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250 | *p3 = savech;
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251 | p2 = p3;
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252 | }
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253 |
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254 | fmtp = p2;
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255 |
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256 | /* only one conversion character if byte count */
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257 | if (!(pr->flags & F_ADDRESS) && fu->bcnt && nconv++) {
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258 | bb_error_msg_and_die("byte count with multiple conversion characters.\n");
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259 | }
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260 | }
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261 | /*
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262 | * if format unit byte count not specified, figure it out
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263 | * so can adjust rep count later.
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264 | */
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265 | if (!fu->bcnt)
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266 | for (pr = fu->nextpr; pr; pr = pr->nextpr)
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267 | fu->bcnt += pr->bcnt;
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268 | }
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269 | /*
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270 | * if the format string interprets any data at all, and it's
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271 | * not the same as the bb_dump_blocksize, and its last format unit
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272 | * interprets any data at all, and has no iteration count,
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273 | * repeat it as necessary.
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274 | *
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275 | * if, rep count is greater than 1, no trailing whitespace
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276 | * gets output from the last iteration of the format unit.
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277 | */
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278 | for (fu = fs->nextfu;; fu = fu->nextfu) {
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279 | if (!fu->nextfu && fs->bcnt < bb_dump_blocksize &&
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280 | !(fu->flags & F_SETREP) && fu->bcnt)
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281 | fu->reps += (bb_dump_blocksize - fs->bcnt) / fu->bcnt;
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282 | if (fu->reps > 1) {
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283 | for (pr = fu->nextpr;; pr = pr->nextpr)
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284 | if (!pr->nextpr)
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285 | break;
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286 | for (p1 = pr->fmt, p2 = NULL; *p1; ++p1)
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287 | p2 = isspace(*p1) ? p1 : NULL;
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288 | if (p2)
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289 | pr->nospace = p2;
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290 | }
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291 | if (!fu->nextfu)
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292 | break;
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293 | }
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294 | }
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295 |
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296 | static void do_skip(char *fname, int statok)
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297 | {
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298 | struct stat sbuf;
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299 |
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300 | if (statok) {
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301 | if (fstat(STDIN_FILENO, &sbuf)) {
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302 | bb_perror_msg_and_die("%s", fname);
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303 | }
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304 | if ((!(S_ISCHR(sbuf.st_mode) ||
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305 | S_ISBLK(sbuf.st_mode) ||
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306 | S_ISFIFO(sbuf.st_mode))) && bb_dump_skip >= sbuf.st_size) {
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307 | /* If bb_dump_size valid and bb_dump_skip >= size */
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308 | bb_dump_skip -= sbuf.st_size;
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309 | address += sbuf.st_size;
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310 | return;
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311 | }
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312 | }
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313 | if (fseek(stdin, bb_dump_skip, SEEK_SET)) {
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314 | bb_perror_msg_and_die("%s", fname);
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315 | }
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316 | savaddress = address += bb_dump_skip;
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317 | bb_dump_skip = 0;
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318 | }
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319 |
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320 | static int next(char **argv)
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321 | {
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322 | static int done;
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323 | int statok;
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324 |
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325 | if (argv) {
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326 | _argv = argv;
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327 | return (1);
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328 | }
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329 | for (;;) {
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330 | if (*_argv) {
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331 | if (!(freopen(*_argv, "r", stdin))) {
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332 | bb_perror_msg("%s", *_argv);
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333 | exitval = 1;
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334 | ++_argv;
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335 | continue;
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336 | }
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337 | statok = done = 1;
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338 | } else {
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339 | if (done++)
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340 | return (0);
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341 | statok = 0;
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342 | }
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343 | if (bb_dump_skip)
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344 | do_skip(statok ? *_argv : "stdin", statok);
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345 | if (*_argv)
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346 | ++_argv;
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347 | if (!bb_dump_skip)
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348 | return (1);
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349 | }
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350 | /* NOTREACHED */
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351 | }
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352 |
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353 | static unsigned char *get(void)
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354 | {
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355 | static int ateof = 1;
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356 | static unsigned char *curp=NULL, *savp; /*DBU:[dave@cray.com]initialize curp */
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357 | register int n;
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358 | int need, nread;
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359 | unsigned char *tmpp;
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360 |
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361 | if (!curp) {
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362 | address = (off_t)0; /*DBU:[dave@cray.com] initialize,initialize..*/
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363 | curp = (unsigned char *) xmalloc(bb_dump_blocksize);
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364 | savp = (unsigned char *) xmalloc(bb_dump_blocksize);
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365 | } else {
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366 | tmpp = curp;
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367 | curp = savp;
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368 | savp = tmpp;
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369 | address = savaddress += bb_dump_blocksize;
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370 | }
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371 | for (need = bb_dump_blocksize, nread = 0;;) {
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372 | /*
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373 | * if read the right number of bytes, or at EOF for one file,
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374 | * and no other files are available, zero-pad the rest of the
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375 | * block and set the end flag.
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376 | */
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377 | if (!bb_dump_length || (ateof && !next((char **) NULL))) {
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378 | if (need == bb_dump_blocksize) {
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379 | return ((unsigned char *) NULL);
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380 | }
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381 | if (bb_dump_vflag != ALL && !memcmp(curp, savp, nread)) {
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382 | if (bb_dump_vflag != DUP) {
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383 | printf("*\n");
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384 | }
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385 | return ((unsigned char *) NULL);
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386 | }
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387 | memset((char *) curp + nread, 0, need);
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388 | eaddress = address + nread;
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389 | return (curp);
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390 | }
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391 | n = fread((char *) curp + nread, sizeof(unsigned char),
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392 | bb_dump_length == -1 ? need : MIN(bb_dump_length, need), stdin);
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393 | if (!n) {
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394 | if (ferror(stdin)) {
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395 | bb_perror_msg("%s", _argv[-1]);
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396 | }
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397 | ateof = 1;
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398 | continue;
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399 | }
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400 | ateof = 0;
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401 | if (bb_dump_length != -1) {
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402 | bb_dump_length -= n;
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403 | }
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404 | if (!(need -= n)) {
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405 | if (bb_dump_vflag == ALL || bb_dump_vflag == FIRST
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406 | || memcmp(curp, savp, bb_dump_blocksize)) {
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407 | if (bb_dump_vflag == DUP || bb_dump_vflag == FIRST) {
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408 | bb_dump_vflag = WAIT;
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409 | }
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410 | return (curp);
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411 | }
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412 | if (bb_dump_vflag == WAIT) {
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413 | printf("*\n");
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414 | }
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415 | bb_dump_vflag = DUP;
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416 | address = savaddress += bb_dump_blocksize;
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417 | need = bb_dump_blocksize;
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418 | nread = 0;
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419 | } else {
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420 | nread += n;
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421 | }
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422 | }
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423 | }
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424 |
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425 | static void bpad(PR * pr)
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426 | {
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427 | char *p1, *p2;
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428 |
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429 | /*
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430 | * remove all conversion flags; '-' is the only one valid
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431 | * with %s, and it's not useful here.
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432 | */
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433 | pr->flags = F_BPAD;
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434 | *pr->cchar = 's';
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435 | for (p1 = pr->fmt; *p1 != '%'; ++p1);
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436 | for (p2 = ++p1; *p1 && strchr(" -0+#", *p1); ++p1)
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437 | if (pr->nospace) pr->nospace--;
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438 | while ((*p2++ = *p1++) != 0);
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439 | }
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440 |
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441 | static const char conv_str[] =
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442 | "\0\\0\0"
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443 | "\007\\a\0" /* \a */
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444 | "\b\\b\0"
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445 | "\f\\b\0"
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446 | "\n\\n\0"
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447 | "\r\\r\0"
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448 | "\t\\t\0"
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449 | "\v\\v\0"
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450 | "\0";
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451 |
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452 |
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453 | static void conv_c(PR * pr, unsigned char * p)
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454 | {
|
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455 | const char *str = conv_str;
|
---|
456 | char buf[10];
|
---|
457 |
|
---|
458 | do {
|
---|
459 | if (*p == *str) {
|
---|
460 | ++str;
|
---|
461 | goto strpr;
|
---|
462 | }
|
---|
463 | str += 4;
|
---|
464 | } while (*str);
|
---|
465 |
|
---|
466 | if (isprint(*p)) {
|
---|
467 | *pr->cchar = 'c';
|
---|
468 | (void) printf(pr->fmt, *p);
|
---|
469 | } else {
|
---|
470 | sprintf(buf, "%03o", (int) *p);
|
---|
471 | str = buf;
|
---|
472 | strpr:
|
---|
473 | *pr->cchar = 's';
|
---|
474 | printf(pr->fmt, str);
|
---|
475 | }
|
---|
476 | }
|
---|
477 |
|
---|
478 | static void conv_u(PR * pr, unsigned char * p)
|
---|
479 | {
|
---|
480 | static const char list[] =
|
---|
481 | "nul\0soh\0stx\0etx\0eot\0enq\0ack\0bel\0"
|
---|
482 | "bs\0_ht\0_lf\0_vt\0_ff\0_cr\0_so\0_si\0_"
|
---|
483 | "dle\0dcl\0dc2\0dc3\0dc4\0nak\0syn\0etb\0"
|
---|
484 | "can\0em\0_sub\0esc\0fs\0_gs\0_rs\0_us";
|
---|
485 |
|
---|
486 | /* od used nl, not lf */
|
---|
487 | if (*p <= 0x1f) {
|
---|
488 | *pr->cchar = 's';
|
---|
489 | printf(pr->fmt, list + (4 * (int)*p));
|
---|
490 | } else if (*p == 0x7f) {
|
---|
491 | *pr->cchar = 's';
|
---|
492 | printf(pr->fmt, "del");
|
---|
493 | } else if (isprint(*p)) {
|
---|
494 | *pr->cchar = 'c';
|
---|
495 | printf(pr->fmt, *p);
|
---|
496 | } else {
|
---|
497 | *pr->cchar = 'x';
|
---|
498 | printf(pr->fmt, (int) *p);
|
---|
499 | }
|
---|
500 | }
|
---|
501 |
|
---|
502 | static void display(void)
|
---|
503 | {
|
---|
504 | /* extern FU *endfu; */
|
---|
505 | register FS *fs;
|
---|
506 | register FU *fu;
|
---|
507 | register PR *pr;
|
---|
508 | register int cnt;
|
---|
509 | register unsigned char *bp;
|
---|
510 |
|
---|
511 | off_t saveaddress;
|
---|
512 | unsigned char savech = 0, *savebp;
|
---|
513 |
|
---|
514 | while ((bp = get()) != NULL) {
|
---|
515 | for (fs = bb_dump_fshead, savebp = bp, saveaddress = address; fs;
|
---|
516 | fs = fs->nextfs, bp = savebp, address = saveaddress) {
|
---|
517 | for (fu = fs->nextfu; fu; fu = fu->nextfu) {
|
---|
518 | if (fu->flags & F_IGNORE) {
|
---|
519 | break;
|
---|
520 | }
|
---|
521 | for (cnt = fu->reps; cnt; --cnt) {
|
---|
522 | for (pr = fu->nextpr; pr; address += pr->bcnt,
|
---|
523 | bp += pr->bcnt, pr = pr->nextpr) {
|
---|
524 | if (eaddress && address >= eaddress &&
|
---|
525 | !(pr->flags & (F_TEXT | F_BPAD))) {
|
---|
526 | bpad(pr);
|
---|
527 | }
|
---|
528 | if (cnt == 1 && pr->nospace) {
|
---|
529 | savech = *pr->nospace;
|
---|
530 | *pr->nospace = '\0';
|
---|
531 | }
|
---|
532 | /* PRINT; */
|
---|
533 | switch (pr->flags) {
|
---|
534 | case F_ADDRESS:
|
---|
535 | printf(pr->fmt, (unsigned int) address);
|
---|
536 | break;
|
---|
537 | case F_BPAD:
|
---|
538 | printf(pr->fmt, "");
|
---|
539 | break;
|
---|
540 | case F_C:
|
---|
541 | conv_c(pr, bp);
|
---|
542 | break;
|
---|
543 | case F_CHAR:
|
---|
544 | printf(pr->fmt, *bp);
|
---|
545 | break;
|
---|
546 | case F_DBL:{
|
---|
547 | double dval;
|
---|
548 | float fval;
|
---|
549 |
|
---|
550 | switch (pr->bcnt) {
|
---|
551 | case 4:
|
---|
552 | memmove((char *) &fval, (char *) bp,
|
---|
553 | sizeof(fval));
|
---|
554 | printf(pr->fmt, fval);
|
---|
555 | break;
|
---|
556 | case 8:
|
---|
557 | memmove((char *) &dval, (char *) bp,
|
---|
558 | sizeof(dval));
|
---|
559 | printf(pr->fmt, dval);
|
---|
560 | break;
|
---|
561 | }
|
---|
562 | break;
|
---|
563 | }
|
---|
564 | case F_INT:{
|
---|
565 | int ival;
|
---|
566 | short sval;
|
---|
567 |
|
---|
568 | switch (pr->bcnt) {
|
---|
569 | case 1:
|
---|
570 | printf(pr->fmt, (int) *bp);
|
---|
571 | break;
|
---|
572 | case 2:
|
---|
573 | memmove((char *) &sval, (char *) bp,
|
---|
574 | sizeof(sval));
|
---|
575 | printf(pr->fmt, (int) sval);
|
---|
576 | break;
|
---|
577 | case 4:
|
---|
578 | memmove((char *) &ival, (char *) bp,
|
---|
579 | sizeof(ival));
|
---|
580 | printf(pr->fmt, ival);
|
---|
581 | break;
|
---|
582 | }
|
---|
583 | break;
|
---|
584 | }
|
---|
585 | case F_P:
|
---|
586 | printf(pr->fmt, isprint(*bp) ? *bp : '.');
|
---|
587 | break;
|
---|
588 | case F_STR:
|
---|
589 | printf(pr->fmt, (char *) bp);
|
---|
590 | break;
|
---|
591 | case F_TEXT:
|
---|
592 | printf(pr->fmt);
|
---|
593 | break;
|
---|
594 | case F_U:
|
---|
595 | conv_u(pr, bp);
|
---|
596 | break;
|
---|
597 | case F_UINT:{
|
---|
598 | unsigned int ival;
|
---|
599 | unsigned short sval;
|
---|
600 |
|
---|
601 | switch (pr->bcnt) {
|
---|
602 | case 1:
|
---|
603 | printf(pr->fmt, (unsigned int) * bp);
|
---|
604 | break;
|
---|
605 | case 2:
|
---|
606 | memmove((char *) &sval, (char *) bp,
|
---|
607 | sizeof(sval));
|
---|
608 | printf(pr->fmt, (unsigned int) sval);
|
---|
609 | break;
|
---|
610 | case 4:
|
---|
611 | memmove((char *) &ival, (char *) bp,
|
---|
612 | sizeof(ival));
|
---|
613 | printf(pr->fmt, ival);
|
---|
614 | break;
|
---|
615 | }
|
---|
616 | break;
|
---|
617 | }
|
---|
618 | }
|
---|
619 | if (cnt == 1 && pr->nospace) {
|
---|
620 | *pr->nospace = savech;
|
---|
621 | }
|
---|
622 | }
|
---|
623 | }
|
---|
624 | }
|
---|
625 | }
|
---|
626 | }
|
---|
627 | if (endfu) {
|
---|
628 | /*
|
---|
629 | * if eaddress not set, error or file bb_dump_size was multiple of
|
---|
630 | * bb_dump_blocksize, and no partial block ever found.
|
---|
631 | */
|
---|
632 | if (!eaddress) {
|
---|
633 | if (!address) {
|
---|
634 | return;
|
---|
635 | }
|
---|
636 | eaddress = address;
|
---|
637 | }
|
---|
638 | for (pr = endfu->nextpr; pr; pr = pr->nextpr) {
|
---|
639 | switch (pr->flags) {
|
---|
640 | case F_ADDRESS:
|
---|
641 | (void) printf(pr->fmt, (unsigned int) eaddress);
|
---|
642 | break;
|
---|
643 | case F_TEXT:
|
---|
644 | (void) printf(pr->fmt);
|
---|
645 | break;
|
---|
646 | }
|
---|
647 | }
|
---|
648 | }
|
---|
649 | }
|
---|
650 |
|
---|
651 | int bb_dump_dump(char **argv)
|
---|
652 | {
|
---|
653 | register FS *tfs;
|
---|
654 |
|
---|
655 | /* figure out the data block bb_dump_size */
|
---|
656 | for (bb_dump_blocksize = 0, tfs = bb_dump_fshead; tfs; tfs = tfs->nextfs) {
|
---|
657 | tfs->bcnt = bb_dump_size(tfs);
|
---|
658 | if (bb_dump_blocksize < tfs->bcnt) {
|
---|
659 | bb_dump_blocksize = tfs->bcnt;
|
---|
660 | }
|
---|
661 | }
|
---|
662 | /* rewrite the rules, do syntax checking */
|
---|
663 | for (tfs = bb_dump_fshead; tfs; tfs = tfs->nextfs) {
|
---|
664 | rewrite(tfs);
|
---|
665 | }
|
---|
666 |
|
---|
667 | next(argv);
|
---|
668 | display();
|
---|
669 |
|
---|
670 | return (exitval);
|
---|
671 | }
|
---|
672 |
|
---|
673 | void bb_dump_add(const char *fmt)
|
---|
674 | {
|
---|
675 | const char *p;
|
---|
676 | char *p1;
|
---|
677 | char *p2;
|
---|
678 | static FS **nextfs;
|
---|
679 | FS *tfs;
|
---|
680 | FU *tfu, **nextfu;
|
---|
681 | const char *savep;
|
---|
682 |
|
---|
683 | /* start new linked list of format units */
|
---|
684 | tfs = xzalloc(sizeof(FS)); /*DBU:[dave@cray.com] start out NULL */
|
---|
685 | if (!bb_dump_fshead) {
|
---|
686 | bb_dump_fshead = tfs;
|
---|
687 | } else {
|
---|
688 | *nextfs = tfs;
|
---|
689 | }
|
---|
690 | nextfs = &tfs->nextfs;
|
---|
691 | nextfu = &tfs->nextfu;
|
---|
692 |
|
---|
693 | /* take the format string and break it up into format units */
|
---|
694 | for (p = fmt;;) {
|
---|
695 | /* bb_dump_skip leading white space */
|
---|
696 | p = skip_whitespace(p);
|
---|
697 | if (!*p) {
|
---|
698 | break;
|
---|
699 | }
|
---|
700 |
|
---|
701 | /* allocate a new format unit and link it in */
|
---|
702 | /* NOSTRICT */
|
---|
703 | /* DBU:[dave@cray.com] calloc so that forward pointers start out NULL */
|
---|
704 | tfu = xzalloc(sizeof(FU));
|
---|
705 | *nextfu = tfu;
|
---|
706 | nextfu = &tfu->nextfu;
|
---|
707 | tfu->reps = 1;
|
---|
708 |
|
---|
709 | /* if leading digit, repetition count */
|
---|
710 | if (isdigit(*p)) {
|
---|
711 | for (savep = p; isdigit(*p); ++p);
|
---|
712 | if (!isspace(*p) && *p != '/') {
|
---|
713 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
714 | }
|
---|
715 | /* may overwrite either white space or slash */
|
---|
716 | tfu->reps = atoi(savep);
|
---|
717 | tfu->flags = F_SETREP;
|
---|
718 | /* bb_dump_skip trailing white space */
|
---|
719 | p = skip_whitespace(++p);
|
---|
720 | }
|
---|
721 |
|
---|
722 | /* bb_dump_skip slash and trailing white space */
|
---|
723 | if (*p == '/') {
|
---|
724 | p = skip_whitespace(++p);
|
---|
725 | }
|
---|
726 |
|
---|
727 | /* byte count */
|
---|
728 | if (isdigit(*p)) {
|
---|
729 | for (savep = p; isdigit(*p); ++p);
|
---|
730 | if (!isspace(*p)) {
|
---|
731 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
732 | }
|
---|
733 | tfu->bcnt = atoi(savep);
|
---|
734 | /* bb_dump_skip trailing white space */
|
---|
735 | p = skip_whitespace(++p);
|
---|
736 | }
|
---|
737 |
|
---|
738 | /* format */
|
---|
739 | if (*p != '"') {
|
---|
740 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
741 | }
|
---|
742 | for (savep = ++p; *p != '"';) {
|
---|
743 | if (*p++ == 0) {
|
---|
744 | bb_error_msg_and_die("bad format {%s}", fmt);
|
---|
745 | }
|
---|
746 | }
|
---|
747 | tfu->fmt = xmalloc(p - savep + 1);
|
---|
748 | strncpy(tfu->fmt, savep, p - savep);
|
---|
749 | tfu->fmt[p - savep] = '\0';
|
---|
750 | /* escape(tfu->fmt); */
|
---|
751 |
|
---|
752 | p1 = tfu->fmt;
|
---|
753 |
|
---|
754 | /* alphabetic escape sequences have to be done in place */
|
---|
755 | for (p2 = p1;; ++p1, ++p2) {
|
---|
756 | if (!*p1) {
|
---|
757 | *p2 = *p1;
|
---|
758 | break;
|
---|
759 | }
|
---|
760 | if (*p1 == '\\') {
|
---|
761 | const char *cs = conv_str + 4;
|
---|
762 | ++p1;
|
---|
763 | *p2 = *p1;
|
---|
764 | do {
|
---|
765 | if (*p1 == cs[2]) {
|
---|
766 | *p2 = cs[0];
|
---|
767 | break;
|
---|
768 | }
|
---|
769 | cs += 4;
|
---|
770 | } while (*cs);
|
---|
771 | }
|
---|
772 | }
|
---|
773 |
|
---|
774 | p++;
|
---|
775 | }
|
---|
776 | }
|
---|
777 |
|
---|
778 | /*
|
---|
779 | * Copyright (c) 1989 The Regents of the University of California.
|
---|
780 | * All rights reserved.
|
---|
781 | *
|
---|
782 | * Redistribution and use in source and binary forms, with or without
|
---|
783 | * modification, are permitted provided that the following conditions
|
---|
784 | * are met:
|
---|
785 | * 1. Redistributions of source code must retain the above copyright
|
---|
786 | * notice, this list of conditions and the following disclaimer.
|
---|
787 | * 2. Redistributions in binary form must reproduce the above copyright
|
---|
788 | * notice, this list of conditions and the following disclaimer in the
|
---|
789 | * documentation and/or other materials provided with the distribution.
|
---|
790 | * 3. Neither the name of the University nor the names of its contributors
|
---|
791 | * may be used to endorse or promote products derived from this software
|
---|
792 | * without specific prior written permission.
|
---|
793 | *
|
---|
794 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
---|
795 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
---|
796 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
---|
797 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
---|
798 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
---|
799 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
---|
800 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
---|
801 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
---|
802 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
---|
803 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
---|
804 | * SUCH DAMAGE.
|
---|
805 | */
|
---|