1 | /* $NetBSD: lam.c,v 1.2 1994/11/14 20:27:42 jtc Exp $ */ |
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2 | |
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3 | /*- |
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4 | * Copyright (c) 1993 |
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5 | * The Regents of the University of California. All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * 1. Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * 3. All advertising materials mentioning features or use of this software |
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16 | * must display the following acknowledgement: |
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17 | * This product includes software developed by the University of |
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18 | * California, Berkeley and its contributors. |
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19 | * 4. Neither the name of the University nor the names of its contributors |
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20 | * may be used to endorse or promote products derived from this software |
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21 | * without specific prior written permission. |
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22 | * |
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23 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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24 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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25 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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26 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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28 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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29 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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30 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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31 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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32 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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33 | * SUCH DAMAGE. |
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34 | */ |
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35 | |
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36 | #ifndef lint |
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37 | static char copyright[] = |
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38 | "@(#) Copyright (c) 1993\n\ |
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39 | The Regents of the University of California. All rights reserved.\n"; |
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40 | #endif /* not lint */ |
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41 | |
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42 | #ifndef lint |
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43 | #if 0 |
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44 | static char sccsid[] = "@(#)lam.c 8.1 (Berkeley) 6/6/93"; |
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45 | #endif |
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46 | static char rcsid[] = "$NetBSD: lam.c,v 1.2 1994/11/14 20:27:42 jtc Exp $"; |
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47 | #endif /* not lint */ |
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48 | |
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49 | /* |
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50 | * lam - laminate files |
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51 | * Author: John Kunze, UCB |
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52 | */ |
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53 | |
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54 | #include <stdio.h> |
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55 | #include <stdlib.h> |
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56 | #include <string.h> |
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57 | |
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58 | #define MAXOFILES 20 |
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59 | #define BIGBUFSIZ 5 * BUFSIZ |
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60 | |
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61 | struct openfile { /* open file structure */ |
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62 | FILE *fp; /* file pointer */ |
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63 | short eof; /* eof flag */ |
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64 | short pad; /* pad flag for missing columns */ |
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65 | char eol; /* end of line character */ |
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66 | char *sepstring; /* string to print before each line */ |
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67 | char *format; /* printf(3) style string spec. */ |
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68 | } input[MAXOFILES]; |
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69 | |
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70 | int morefiles; /* set by getargs(), changed by gatherline() */ |
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71 | int nofinalnl; /* normally append \n to each output line */ |
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72 | char line[BIGBUFSIZ]; |
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73 | char *linep; |
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74 | |
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75 | void error(char *, char *); |
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76 | char *gatherline(struct openfile *); |
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77 | void getargs(char *[]); |
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78 | char *pad(struct openfile *); |
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79 | |
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80 | int |
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81 | main(argc, argv) |
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82 | int argc; |
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83 | char *argv[]; |
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84 | { |
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85 | register struct openfile *ip; |
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86 | |
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87 | getargs(argv); |
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88 | if (!morefiles) |
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89 | error("lam - laminate files", ""); |
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90 | for (;;) { |
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91 | linep = line; |
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92 | for (ip = input; ip->fp != NULL; ip++) |
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93 | linep = gatherline(ip); |
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94 | if (!morefiles) |
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95 | exit(0); |
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96 | fputs(line, stdout); |
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97 | fputs(ip->sepstring, stdout); |
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98 | if (!nofinalnl) |
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99 | putchar('\n'); |
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100 | } |
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101 | } |
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102 | |
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103 | void |
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104 | getargs(av) |
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105 | char *av[]; |
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106 | { |
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107 | register struct openfile *ip = input; |
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108 | register char *p; |
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109 | register char *c; |
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110 | static char fmtbuf[BUFSIZ]; |
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111 | char *fmtp = fmtbuf; |
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112 | int P, S, F, T; |
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113 | |
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114 | P = S = F = T = 0; /* capitalized options */ |
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115 | while ((p = *++av) != NULL) { |
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116 | if (*p != '-' || !p[1]) { |
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117 | morefiles++; |
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118 | if (*p == '-') |
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119 | ip->fp = stdin; |
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120 | else if ((ip->fp = fopen(p, "r")) == NULL) { |
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121 | perror(p); |
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122 | exit(1); |
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123 | } |
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124 | ip->pad = P; |
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125 | if (!ip->sepstring) |
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126 | ip->sepstring = (S ? (ip-1)->sepstring : ""); |
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127 | if (!ip->format) |
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128 | ip->format = ((P || F) ? (ip-1)->format : "%s"); |
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129 | if (!ip->eol) |
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130 | ip->eol = (T ? (ip-1)->eol : '\n'); |
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131 | ip++; |
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132 | continue; |
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133 | } |
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134 | switch (*(c = ++p) | 040) { |
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135 | case 's': |
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136 | if (*++p || (p = *++av)) |
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137 | ip->sepstring = p; |
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138 | else |
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139 | error("Need string after -%s", c); |
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140 | S = (*c == 'S' ? 1 : 0); |
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141 | break; |
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142 | case 't': |
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143 | if (*++p || (p = *++av)) |
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144 | ip->eol = *p; |
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145 | else |
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146 | error("Need character after -%s", c); |
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147 | T = (*c == 'T' ? 1 : 0); |
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148 | nofinalnl = 1; |
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149 | break; |
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150 | case 'p': |
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151 | ip->pad = 1; |
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152 | P = (*c == 'P' ? 1 : 0); |
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153 | case 'f': |
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154 | F = (*c == 'F' ? 1 : 0); |
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155 | if (*++p || (p = *++av)) { |
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156 | fmtp += strlen(fmtp) + 1; |
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157 | if (fmtp > fmtbuf + BUFSIZ) |
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158 | error("No more format space", ""); |
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159 | sprintf(fmtp, "%%%ss", p); |
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160 | ip->format = fmtp; |
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161 | } |
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162 | else |
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163 | error("Need string after -%s", c); |
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164 | break; |
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165 | default: |
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166 | error("What do you mean by -%s?", c); |
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167 | break; |
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168 | } |
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169 | } |
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170 | ip->fp = NULL; |
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171 | if (!ip->sepstring) |
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172 | ip->sepstring = ""; |
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173 | } |
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174 | |
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175 | char * |
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176 | pad(ip) |
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177 | struct openfile *ip; |
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178 | { |
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179 | register char *p = ip->sepstring; |
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180 | register char *lp = linep; |
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181 | |
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182 | while (*p) |
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183 | *lp++ = *p++; |
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184 | if (ip->pad) { |
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185 | sprintf(lp, ip->format, ""); |
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186 | lp += strlen(lp); |
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187 | } |
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188 | return (lp); |
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189 | } |
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190 | |
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191 | char * |
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192 | gatherline(ip) |
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193 | struct openfile *ip; |
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194 | { |
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195 | char s[BUFSIZ]; |
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196 | register int c; |
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197 | register char *p; |
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198 | register char *lp = linep; |
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199 | char *end = s + BUFSIZ; |
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200 | |
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201 | if (ip->eof) |
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202 | return (pad(ip)); |
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203 | for (p = s; (c = fgetc(ip->fp)) != EOF && p < end; p++) |
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204 | if ((*p = c) == ip->eol) |
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205 | break; |
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206 | *p = '\0'; |
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207 | if (c == EOF) { |
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208 | ip->eof = 1; |
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209 | if (ip->fp == stdin) |
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210 | fclose(stdin); |
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211 | morefiles--; |
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212 | return (pad(ip)); |
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213 | } |
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214 | p = ip->sepstring; |
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215 | while (*p) |
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216 | *lp++ = *p++; |
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217 | sprintf(lp, ip->format, s); |
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218 | lp += strlen(lp); |
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219 | return (lp); |
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220 | } |
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221 | |
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222 | void |
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223 | error(msg, s) |
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224 | char *msg, *s; |
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225 | { |
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226 | fprintf(stderr, "lam: "); |
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227 | fprintf(stderr, msg, s); |
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228 | fprintf(stderr, |
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229 | "\nUsage: lam [ -[fp] min.max ] [ -s sepstring ] [ -t c ] file ...\n"); |
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230 | if (strncmp("lam - ", msg, 6) == 0) |
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231 | fprintf(stderr, "Options:\n\t%s\t%s\t%s\t%s\t%s", |
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232 | "-f min.max field widths for file fragments\n", |
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233 | "-p min.max like -f, but pad missing fragments\n", |
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234 | "-s sepstring fragment separator\n", |
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235 | "-t c input line terminator is c, no \\n after output lines\n", |
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236 | "Capitalized options affect more than one file.\n"); |
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237 | exit(1); |
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238 | } |
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