drecord/drecord.c

/* */
This source file includes following definitions.
main
   1 /*
   2 ** Copyright (c) 2024 Amelia Campbell
   3 **
   4 ** Redistribution and use in source and binary forms, with or without
   5 ** modification, are permitted provided that the following conditions are
   6 ** met:
   7 **
   8 **  1. Redistributions of source code must retain the above copyright
   9 **     notice, this list of conditions and the following disclaimer.
  10 **  2. Redistributions in binary form must reproduce the above copyright
  11 **     notice, this list of conditions and the following disclaimer in the
  12 **     documentation and/or other materials provided with the
  13 **     distribution.
  14 **  3. Neither the name of the copyright holder nor the names of its
  15 **     contributors may be used to endorse or promote products derived
  16 **     from this software without specific prior written permission.
  17 **
  18 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  19 ** IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  20 ** TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  21 ** PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 ** HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29 */
  30 
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <stdlib.h>
  34 
  35 #include <shared/macro.h>
  36 #include <shared/term.h>
  37 
  38 #define LINESZ 4096
  39 
  40 #define NEED_QUERY "not enough arguments: need query\n"
  41 #define NEED_FORMAT "couldn't parse: format error at ln %d\n"
  42 #define FORMAT_ERROR fatal(NEED_FORMAT, ln)
  43 
  44 int main(int argc, char **argv)
  45     {
  46     char line[LINESZ];
  47     char *nl, *rname, *rvalue, *needle;
  48     int exact = 0, ln = 1;
  49 
  50     if (argc < 2) fatal(NEED_QUERY);
  51     needle = argv[1];
  52     if (strcmp(argv[1], "m") == 0 || strcmp(argv[1], "-m") == 0)
  53         {
  54         exact = 1;
  55         if (argc < 3) fatal(NEED_QUERY);
  56         needle = argv[2];
  57         }
  58 
  59     while (fgets(line, LINESZ, stdin) != NULL)
  60         {
  61         /* XXX: could really be improved, yuck... */
  62         rvalue = strchr(line, ':');
  63         if (!rvalue) FORMAT_ERROR;
  64         rvalue += strspn(rvalue + 1, "\n\t\r ") + 1;
  65         if (!strlen(rvalue)) FORMAT_ERROR;
  66         nl = strchr(rvalue, '\n');
  67         if (nl) *nl = '\0';
  68         if (!strlen(rvalue)) FORMAT_ERROR;
  69         rname = strtok(line, "\n\t\r :");
  70         if (!rname) FORMAT_ERROR;
  71 
  72         if (exact  && strcmp(rname, needle) == 0)
  73             printf("%s\n", rvalue);
  74         if (!exact && strstr(rname, needle))
  75             printf("%s: %s\n", rname, rvalue);
  76         ln++;
  77         }
  78     return 0;
  79     }
/* */
root/drecord/drecord.c

DEFINITIONS
