1 | /*- |
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2 | * Copyright (c) 1993 |
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3 | * The Regents of the University of California. All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * 1. Redistributions of source code must retain the above copyright |
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9 | * notice, this list of conditions and the following disclaimer. |
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10 | * 2. Redistributions in binary form must reproduce the above copyright |
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11 | * notice, this list of conditions and the following disclaimer in the |
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12 | * documentation and/or other materials provided with the distribution. |
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13 | * 4. Neither the name of the University nor the names of its contributors |
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14 | * may be used to endorse or promote products derived from this software |
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15 | * without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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27 | * SUCH DAMAGE. |
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28 | */ |
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29 | |
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30 | #ifndef lint |
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31 | static const char copyright[] = |
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32 | "@(#) Copyright (c) 1993\n\ |
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33 | The Regents of the University of California. All rights reserved.\n"; |
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34 | #endif /* not lint */ |
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35 | |
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36 | #ifndef lint |
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37 | #if 0 |
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38 | static char sccsid[] = "@(#)lam.c 8.1 (Berkeley) 6/6/93"; |
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39 | #endif |
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40 | #endif /* not lint */ |
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41 | #include <sys/cdefs.h> |
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42 | __FBSDID("$FreeBSD$"); |
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43 | |
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44 | /* |
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45 | * lam - laminate files |
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46 | * Author: John Kunze, UCB |
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47 | */ |
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48 | |
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49 | #include <ctype.h> |
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50 | #include <err.h> |
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51 | #include <stdio.h> |
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52 | #include <stdlib.h> |
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53 | #include <string.h> |
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54 | |
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55 | #define MAXOFILES 20 |
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56 | #define BIGBUFSIZ 5 * BUFSIZ |
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57 | |
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58 | static struct openfile { /* open file structure */ |
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59 | FILE *fp; /* file pointer */ |
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60 | short eof; /* eof flag */ |
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61 | short pad; /* pad flag for missing columns */ |
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62 | char eol; /* end of line character */ |
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63 | const char *sepstring; /* string to print before each line */ |
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64 | const char *format; /* printf(3) style string spec. */ |
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65 | } input[MAXOFILES]; |
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66 | |
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67 | static int morefiles; /* set by getargs(), changed by gatherline() */ |
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68 | static int nofinalnl; /* normally append \n to each output line */ |
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69 | static char line[BIGBUFSIZ]; |
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70 | static char *linep; |
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71 | |
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72 | static char *gatherline(struct openfile *); |
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73 | static void getargs(char *[]); |
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74 | static char *pad(struct openfile *); |
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75 | static void usage(void); |
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76 | |
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77 | int |
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78 | main(int argc, char *argv[]) |
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79 | { |
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80 | struct openfile *ip; |
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81 | |
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82 | if (argc == 1) |
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83 | usage(); |
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84 | getargs(argv); |
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85 | if (!morefiles) |
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86 | usage(); |
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87 | for (;;) { |
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88 | linep = line; |
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89 | for (ip = input; ip->fp != NULL; ip++) |
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90 | linep = gatherline(ip); |
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91 | if (!morefiles) |
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92 | exit(0); |
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93 | fputs(line, stdout); |
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94 | fputs(ip->sepstring, stdout); |
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95 | if (!nofinalnl) |
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96 | putchar('\n'); |
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97 | } |
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98 | } |
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99 | |
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100 | static void |
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101 | getargs(char *av[]) |
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102 | { |
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103 | struct openfile *ip = input; |
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104 | char *p, *c; |
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105 | static char fmtbuf[BUFSIZ]; |
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106 | char *fmtp = fmtbuf; |
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107 | int P, S, F, T; |
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108 | |
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109 | P = S = F = T = 0; /* capitalized options */ |
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110 | while ((p = *++av) != NULL) { |
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111 | if (*p != '-' || !p[1]) { |
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112 | if (++morefiles >= MAXOFILES) |
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113 | errx(1, "too many input files"); |
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114 | if (*p == '-') |
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115 | ip->fp = stdin; |
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116 | else if ((ip->fp = fopen(p, "r")) == NULL) { |
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117 | err(1, "%s", p); |
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118 | } |
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119 | ip->pad = P; |
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120 | if (!ip->sepstring) |
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121 | ip->sepstring = (S ? (ip-1)->sepstring : ""); |
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122 | if (!ip->format) |
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123 | ip->format = ((P || F) ? (ip-1)->format : "%s"); |
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124 | if (!ip->eol) |
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125 | ip->eol = (T ? (ip-1)->eol : '\n'); |
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126 | ip++; |
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127 | continue; |
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128 | } |
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129 | c = ++p; |
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130 | switch (tolower((unsigned char)*c)) { |
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131 | case 's': |
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132 | if (*++p || (p = *++av)) |
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133 | ip->sepstring = p; |
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134 | else |
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135 | usage(); |
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136 | S = (*c == 'S' ? 1 : 0); |
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137 | break; |
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138 | case 't': |
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139 | if (*++p || (p = *++av)) |
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140 | ip->eol = *p; |
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141 | else |
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142 | usage(); |
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143 | T = (*c == 'T' ? 1 : 0); |
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144 | nofinalnl = 1; |
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145 | break; |
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146 | case 'p': |
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147 | ip->pad = 1; |
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148 | P = (*c == 'P' ? 1 : 0); |
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149 | /* FALLTHROUGH */ |
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150 | case 'f': |
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151 | F = (*c == 'F' ? 1 : 0); |
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152 | if (*++p || (p = *++av)) { |
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153 | fmtp += strlen(fmtp) + 1; |
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154 | if (fmtp >= fmtbuf + sizeof(fmtbuf)) |
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155 | errx(1, "no more format space"); |
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156 | /* restrict format string to only valid width formatters */ |
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157 | if (strspn(p, "-.0123456789") != strlen(p)) |
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158 | errx(1, "invalid format string `%s'", p); |
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159 | if (snprintf(fmtp, fmtbuf + sizeof(fmtbuf) - fmtp, "%%%ss", p) |
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160 | >= fmtbuf + sizeof(fmtbuf) - fmtp) |
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161 | errx(1, "no more format space"); |
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162 | ip->format = fmtp; |
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163 | } |
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164 | else |
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165 | usage(); |
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166 | break; |
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167 | default: |
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168 | usage(); |
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169 | } |
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170 | } |
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171 | ip->fp = NULL; |
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172 | if (!ip->sepstring) |
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173 | ip->sepstring = ""; |
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174 | } |
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175 | |
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176 | static char * |
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177 | pad(struct openfile *ip) |
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178 | { |
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179 | char *lp = linep; |
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180 | |
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181 | strlcpy(lp, ip->sepstring, line + sizeof(line) - lp); |
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182 | lp += strlen(lp); |
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183 | if (ip->pad) { |
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184 | snprintf(lp, line + sizeof(line) - lp, ip->format, ""); |
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185 | lp += strlen(lp); |
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186 | } |
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187 | return (lp); |
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188 | } |
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189 | |
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190 | static char * |
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191 | gatherline(struct openfile *ip) |
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192 | { |
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193 | char s[BUFSIZ]; |
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194 | int c; |
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195 | char *p; |
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196 | char *lp = linep; |
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197 | char *end = s + sizeof(s) - 1; |
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198 | |
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199 | if (ip->eof) |
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200 | return (pad(ip)); |
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201 | for (p = s; (c = fgetc(ip->fp)) != EOF && p < end; p++) |
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202 | if ((*p = c) == ip->eol) |
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203 | break; |
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204 | *p = '\0'; |
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205 | if (c == EOF) { |
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206 | ip->eof = 1; |
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207 | if (ip->fp == stdin) |
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208 | fclose(stdin); |
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209 | morefiles--; |
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210 | return (pad(ip)); |
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211 | } |
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212 | strlcpy(lp, ip->sepstring, line + sizeof(line) - lp); |
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213 | lp += strlen(lp); |
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214 | snprintf(lp, line + sizeof(line) - lp, ip->format, s); |
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215 | lp += strlen(lp); |
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216 | return (lp); |
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217 | } |
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218 | |
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219 | static void |
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220 | usage(void) |
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221 | { |
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222 | fprintf(stderr, "%s\n%s\n", |
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223 | "usage: lam [ -f min.max ] [ -s sepstring ] [ -t c ] file ...", |
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224 | " lam [ -p min.max ] [ -s sepstring ] [ -t c ] file ..."); |
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225 | exit(1); |
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226 | } |
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