usr/src/cmd/print/conv_fix/conv_fix.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <locale.h>
  33 #include <sys/file.h>
  34 #include <fcntl.h>
  35 #include <errno.h>
  36
  37 extern char *optarg;
  38
  39 /*
  40  * FUNCTION:
  41  *      static char *_file_getline(FILE *fp)
  42  * INPUT:
  43  *      FILE *fp - file pointer to read from
  44  * OUTPUT:
  45  *      char *(return) - an entry from the stream
  46  * DESCRIPTION:
  47  *      This routine will read in a line at a time.  If the line ends in a
  48  *      newline, it returns.  If the line ends in a backslash newline, it
  49  *      continues reading more.  It will ignore lines that start in # or
  50  *      blank lines.
  51  */
  52 static char *
  53 _file_getline(FILE *fp)
  54 {
  55         char entry[BUFSIZ], *tmp;
  56         int size;
  57
  58         size = sizeof (entry);
  59         tmp  = entry;
  60
  61         /* find an entry */
  62         while (fgets(tmp, size, fp)) {
  63                 if ((tmp == entry) && ((*tmp == '#') || (*tmp == '\n'))) {
  64                         continue;
  65                 } else {
  66                         if ((*tmp == '#') || (*tmp == '\n')) {
  67                                 *tmp = NULL;
  68                                 break;
  69                         }
  70
  71                         size -= strlen(tmp);
  72                         tmp += strlen(tmp);
  73
  74                         if (*(tmp-2) != '\\')
  75                                 break;
  76
  77                         size -= 2;
  78                         tmp -= 2;
  79                 }
  80         }
  81
  82         if (tmp == entry)
  83                 return (NULL);
  84         else
  85                 return (strdup(entry));
  86 }
  87
  88 int
  89 main(int ac, char *av[])
  90 {
  91         int   c;
  92         char  file[80], ofile[80];
  93         char *cp;
  94         FILE *fp, *fp2;
  95
  96         (void) setlocale(LC_ALL, "");
  97
  98 #if     !defined(TEXT_DOMAIN)
  99 #define TEXT_DOMAIN "SYS_TEST"
 100 #endif
 101         (void) textdomain(TEXT_DOMAIN);
 102
 103         while ((c = getopt(ac, av, "f:o:")) != EOF)
 104
 105                 switch (c) {
 106                 case 'f':
 107                         (void) strlcpy(file, optarg, sizeof (file));
 108                         break;
 109                 case 'o':
 110                         (void) strlcpy(ofile, optarg, sizeof (ofile));
 111                         break;
 112                 default:
 113                         (void) fprintf(stderr, gettext(
 114                                 "Usage: %s [-f file] [-o output file]\n"),
 115                                 av[0]);
 116                         return (1);
 117                 }
 118
 119         if ((fp = fopen(file, "r")) != NULL) {
 120                 int fd;
 121
 122                 fd = open(ofile, O_RDWR|O_APPEND);
 123                 if ((fd < 0) && (errno == ENOENT))
 124                         fd = open(ofile, O_RDWR|O_CREAT|O_EXCL, 0644);
 125
 126                 if (fd < 0) {
 127                         (void) fprintf(stderr,
 128                             gettext("Error trying to open file.\n"));
 129                         return (1);
 130                 }
 131
 132                 lseek(fd, 0, SEEK_END);
 133
 134                 if ((fp2 = fdopen(fd, "a")) != NULL) {
 135                         while ((cp = _file_getline(fp)) != NULL) {
 136                                 (void) fprintf(fp2, "%s", cp);
 137                         }
 138                         return (0);
 139                 } else {
 140                         (void) fprintf(stderr,
 141                             gettext("Error trying to open file.\n"));
 142                         return (1);
 143                 }
 144         } else {
 145                 (void) fprintf(stderr,
 146                     gettext("Error trying to open file.\n"));
 147                 return (1);
 148         }
 149 }