src/command.c

   1 /*
   2  * Copyright 1993, 1995 Christopher Seiwald.
   3  *
   4  * This file is part of Jam - see jam.c for Copyright information.
   5  */
   6
   7 /*
   8  * command.c - maintain lists of commands
   9  *
  10  * 01/20/00 (seiwald) - Upgraded from K&R to ANSI C
  11  * 09/08/00 (seiwald) - bulletproof PIECEMEAL size computation
  12  */
  13
  14 #include "jam.h"
  15
  16 #include "lists.h"
  17 #include "parse.h"
  18 #include "variable.h"
  19 #include "rules.h"
  20
  21 #include "command.h"
  22
  23
  24 /*
  25  * cmd_new() - return a new CMD or 0 if too many args
  26  */
  27 CMD *cmd_new (RULE *rule, LIST *targets, LIST *sources, LIST *shell, int maxline) {
  28   CMD *cmd = (CMD *)malloc(sizeof(CMD));
  29
  30   cmd->rule = rule;
  31   cmd->shell = shell;
  32   cmd->next = 0;
  33
  34   lol_init(&cmd->args);
  35   lol_add(&cmd->args, targets);
  36   lol_add(&cmd->args, sources);
  37
  38   /* Bail if the result won't fit in maxline */
  39   /* We don't free targets/sources/shell if bailing. */
  40   if (var_string(rule->actions, cmd->buf, maxline, &cmd->args) < 0) {
  41     cmd_free(cmd);
  42     return 0;
  43   }
  44
  45   return cmd;
  46 }
  47
  48
  49 /*
  50  * cmd_free() - free a CMD
  51  */
  52 void cmd_free (CMD *cmd) {
  53   lol_free(&cmd->args);
  54   list_free(cmd->shell);
  55   free((char *)cmd);
  56 }