Mercurial > hg > toybox
annotate toys/posix/od.c @ 1070:16167a7c1b5a draft
Fix -t c0 and -J as reported by heehooman at gmail on the list.
Also fix up help text, and hook up -c.
author | Rob Landley <rob@landley.net> |
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date | Mon, 16 Sep 2013 23:41:51 -0500 |
parents | 786841fdb1e0 |
children | 44ca17a8c83e |
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1 /* od.c - Provide octal/hex dumps of data |
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2 * |
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3 * Copyright 2012 Andre Renaud <andre@bluewatersys.com> |
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4 * Copyright 2012 Rob Landley <rob@landley.net> |
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5 * |
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6 * See http://opengroup.org/onlinepubs/9699919799/utilities/od.html |
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7 |
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8 USE_OD(NEWTOY(od, "j#vN#xsodcbA:t*", TOYFLAG_USR|TOYFLAG_BIN)) |
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9 |
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10 config OD |
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11 bool "od" |
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12 default y |
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13 help |
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14 usage: od [-bcdosxv] [-j #] [-N #] [-A doxn] [-t acdfoux[#]] |
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15 |
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16 -A Address base (decimal, octal, hexdecimal, none) |
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17 -j Skip this many bytes of input |
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18 -N Stop dumping after this many bytes |
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19 -t output type a(scii) c(har) d(ecimal) f(loat) o(ctal) u(nsigned) (he)x |
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20 plus optional size in bytes |
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21 aliases: -b=-t o1, -c=-t c, -d=-t u2, -o=-t o2, -s=-t d2, -x=-t x2 |
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22 -v Don't collapse repeated lines together |
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23 */ |
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24 |
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25 #define FOR_od |
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26 #include "toys.h" |
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27 |
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28 GLOBALS( |
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29 struct arg_list *output_base; |
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30 char *address_base; |
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31 long max_count; |
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32 long jump_bytes; |
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33 |
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34 unsigned types, leftover, star, address_idx; |
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35 char *buf; |
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36 uint64_t bufs[4]; // force 64-bit alignment |
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37 off_t pos; |
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38 ) |
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39 |
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40 static char *ascii = "nulsohstxetxeotenqackbel bs ht nl vt ff cr so si" |
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41 "dledc1dc2dc3dc4naksynetbcan emsubesc fs gs rs us sp"; |
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42 |
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43 struct odtype { |
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44 int type; |
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45 int size; |
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46 }; |
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47 |
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48 static void od_outline(void) |
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49 { |
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50 unsigned flags = toys.optflags; |
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51 char *abases[] = {"", "%07d", "%07o", "%06x"}; |
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52 struct odtype *types = (struct odtype *)toybuf, *t; |
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53 int i, len; |
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54 |
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55 if (TT.leftover<16) memset(TT.buf+TT.leftover, 0, 16-TT.leftover); |
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56 |
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57 // Handle duplciate lines as * |
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58 if (!(flags&FLAG_v) && TT.jump_bytes != TT.pos && TT.leftover |
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59 && !memcmp(TT.bufs, TT.bufs + 2, 16)) |
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60 { |
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61 if (!TT.star) { |
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62 xputs("*"); |
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63 TT.star++; |
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64 } |
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65 |
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66 // Print line position |
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67 } else { |
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68 TT.star = 0; |
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69 |
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70 xprintf(abases[TT.address_idx], TT.pos); |
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71 if (!TT.leftover) { |
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72 if (TT.address_idx) xputc('\n'); |
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73 return; |
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74 } |
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75 } |
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76 |
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77 TT.pos += len = TT.leftover; |
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78 TT.leftover = 0; |
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79 if (TT.star) return; |
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80 |
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81 // For each output type, print one line |
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82 |
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83 for (i=0; i<TT.types; i++) { |
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84 int j = 0, pad = i ? 8 : 0; |
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85 char buf[128]; |
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86 |
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87 t = types+i; |
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88 while (j<len) { |
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89 unsigned k; |
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90 int throw = 0; |
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91 |
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92 // Handle ascii |
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93 if (t->type < 2) { |
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94 char c = TT.buf[j++]; |
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95 pad += 4; |
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96 |
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97 if (!t->type) { |
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98 c &= 127; |
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99 if (c<=32) sprintf(buf, "%.3s", ascii+(3*c)); |
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100 else if (c==127) strcpy(buf, "del"); |
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101 else sprintf(buf, "%c", c); |
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102 } else { |
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103 char *bfnrtav = "\b\f\n\r\t\a\v", *s = strchr(bfnrtav, c); |
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104 if (s) sprintf(buf, "\\%c", "bfnrtav0"[s-bfnrtav]); |
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105 else if (c < 32 || c >= 127) sprintf(buf, "%03o", c); |
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106 else { |
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107 // TODO: this should be UTF8 aware. |
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108 sprintf(buf, "%c", c); |
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109 } |
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110 } |
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111 } else if (CFG_TOYBOX_FLOAT && t->type == 6) { |
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112 long double ld; |
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113 union {float f; double d; long double ld;} fdl; |
622 | 114 |
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115 memcpy(&fdl, TT.buf+j, t->size); |
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116 j += t->size; |
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117 if (sizeof(float) == t->size) { |
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118 ld = fdl.f; |
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119 pad += (throw = 8)+7; |
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120 } else if (sizeof(double) == t->size) { |
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121 ld = fdl.d; |
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122 pad += (throw = 17)+8; |
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123 } else if (sizeof(long double) == t->size) { |
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124 ld = fdl.ld; |
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125 pad += (throw = 21)+9; |
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126 } else error_exit("bad -tf '%d'", t->size); |
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128 sprintf(buf, "%.*Le", throw, ld); |
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129 // Integer types |
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130 } else { |
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131 unsigned long long ll = 0, or; |
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132 char *c[] = {"%*lld", "%*llu", "%0*llo", "%0*llx"}, |
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133 *class = c[t->type-2]; |
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134 |
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135 // Work out width of field |
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136 if (t->size == 8) { |
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137 or = -1LL; |
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138 if (t->type == 2) or >>= 1; |
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139 } else or = (1LL<<(8*t->size))-1; |
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140 throw = sprintf(buf, class, 0, or); |
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141 |
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142 // Accumulate integer based on size argument |
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143 for (k=0; k < t->size; k++) { |
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144 or = TT.buf[j++]; |
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145 ll |= or << (8*(IS_BIG_ENDIAN ? t->size-k-1 : k)); |
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146 } |
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147 |
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148 // Handle negative values |
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149 if (t->type == 2) { |
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150 or = sizeof(or) - t->size; |
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151 throw++; |
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152 if (or && (ll & (1l<<((8*t->size)-1)))) |
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153 ll |= ((or<<(8*or))-1) << (8*t->size); |
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154 } |
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155 |
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156 sprintf(buf, class, throw, ll); |
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157 pad += throw+1; |
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158 } |
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159 xprintf("%*s", pad, buf); |
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160 pad = 0; |
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161 } |
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162 xputc('\n'); |
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163 } |
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164 |
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165 // buffer toggle for "same as last time" check. |
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166 TT.buf = (char *)((TT.buf == (char *)TT.bufs) ? TT.bufs+2 : TT.bufs); |
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167 } |
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168 |
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169 static void do_od(int fd, char *name) |
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170 { |
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171 // Skip input, possibly more than one entire file. |
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172 if (TT.jump_bytes > TT.pos) { |
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173 off_t pos = TT.jump_bytes-TT.pos, off = lskip(fd, pos); |
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174 |
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175 if (off >= 0) TT.pos += pos-off; |
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176 if (TT.jump_bytes > TT.pos) return; |
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177 } |
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178 |
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179 for(;;) { |
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180 char *buf = TT.buf + TT.leftover; |
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181 int len = 16 - TT.leftover; |
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182 |
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183 if (toys.optflags & FLAG_N) { |
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184 if (!TT.max_count) break; |
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185 if (TT.max_count < len) len = TT.max_count; |
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186 } |
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187 |
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188 len = readall(fd, buf, len); |
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189 if (len < 0) { |
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190 perror_msg("%s", name); |
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191 break; |
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192 } |
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193 if (TT.max_count) TT.max_count -= len; |
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194 TT.leftover += len; |
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195 if (TT.leftover < 16) break; |
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196 |
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197 od_outline(); |
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198 } |
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199 } |
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200 |
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201 static void append_base(char *base) |
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202 { |
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203 char *s = base; |
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204 struct odtype *types = (struct odtype *)toybuf; |
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205 int type; |
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206 |
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207 for (;;) { |
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208 int size = 1; |
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209 |
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210 if (!*s) return; |
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211 if (TT.types >= sizeof(toybuf)/sizeof(struct odtype)) break; |
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212 if (-1 == (type = stridx("acduox"USE_TOYBOX_FLOAT("f"), *(s++)))) break; |
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213 |
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214 if (isdigit(*s)) { |
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215 size = strtol(s, &s, 10); |
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216 if (type < 2 && size != 1) break; |
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217 if (CFG_TOYBOX_FLOAT && type == 6 && size == sizeof(long double)); |
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218 else if (size < 1 || size > 8) break; |
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219 } else if (CFG_TOYBOX_FLOAT && type == 6) { |
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220 int sizes[] = {sizeof(float), sizeof(double), sizeof(long double)}; |
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221 if (-1 == (size = stridx("FDL", *s))) size = sizeof(double); |
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222 else { |
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223 s++; |
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224 size = sizes[size]; |
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225 } |
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226 } else if (type > 1) { |
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227 if (-1 == (size = stridx("CSIL", *s))) size = 4; |
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228 else { |
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229 s++; |
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230 size = 1 << size; |
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231 } |
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232 } |
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233 |
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234 types[TT.types].type = type; |
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235 types[TT.types].size = size; |
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236 TT.types++; |
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237 } |
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238 |
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239 error_exit("bad -t %s", base); |
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240 } |
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241 |
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242 void od_main(void) |
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243 { |
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244 struct arg_list *arg; |
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245 |
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246 TT.buf = (char *)TT.bufs; |
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247 |
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248 if (!TT.address_base) TT.address_idx = 2; |
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249 else if (0>(TT.address_idx = stridx("ndox", *TT.address_base))) |
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250 error_exit("bad -A '%c'", *TT.address_base); |
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251 |
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252 // Collect -t entries |
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253 |
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254 for (arg = TT.output_base; arg; arg = arg->next) append_base(arg->arg); |
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255 if (toys.optflags & FLAG_b) append_base("o1"); |
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Fix -t c0 and -J as reported by heehooman at gmail on the list.
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parents:
694
diff
changeset
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256 if (toys.optflags & FLAG_c) append_base("c"); |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
674
diff
changeset
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257 if (toys.optflags & FLAG_d) append_base("u2"); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
674
diff
changeset
|
258 if (toys.optflags & FLAG_o) append_base("o2"); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
674
diff
changeset
|
259 if (toys.optflags & FLAG_s) append_base("d2"); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
674
diff
changeset
|
260 if (toys.optflags & FLAG_x) append_base("x2"); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
674
diff
changeset
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261 if (!TT.output_base) append_base("o2"); |
621
488032f4394a
Complete rewrite of od, mostly working. (Need to finish -c and -f.)
Rob Landley <rob@landley.net>
parents:
613
diff
changeset
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262 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
674
diff
changeset
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263 loopfiles(toys.optargs, do_od); |
621
488032f4394a
Complete rewrite of od, mostly working. (Need to finish -c and -f.)
Rob Landley <rob@landley.net>
parents:
613
diff
changeset
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264 |
694
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
674
diff
changeset
|
265 if (TT.leftover) od_outline(); |
786841fdb1e0
Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents:
674
diff
changeset
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266 od_outline(); |
611
c9865aadb9fc
First drop of od, from Andre Renaud.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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267 } |