| 1 | /* Utilities to execute a program in a subprocess (possibly linked by pipes |
| 2 | with other subprocesses), and wait for it. MPW specialization. |
| 3 | Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003 |
| 4 | Free Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of the libiberty library. |
| 7 | Libiberty is free software; you can redistribute it and/or |
| 8 | modify it under the terms of the GNU Library General Public |
| 9 | License as published by the Free Software Foundation; either |
| 10 | version 2 of the License, or (at your option) any later version. |
| 11 | |
| 12 | Libiberty is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | Library General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU Library General Public |
| 18 | License along with libiberty; see the file COPYING.LIB. If not, |
| 19 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "pex-common.h" |
| 23 | |
| 24 | #include <stdio.h> |
| 25 | #ifdef HAVE_STRING_H |
| 26 | #include <string.h> |
| 27 | #endif |
| 28 | |
| 29 | /* MPW pexecute doesn't actually run anything; instead, it writes out |
| 30 | script commands that, when run, will do the actual executing. |
| 31 | |
| 32 | For example, in GCC's case, GCC will write out several script commands: |
| 33 | |
| 34 | cpp ... |
| 35 | cc1 ... |
| 36 | as ... |
| 37 | ld ... |
| 38 | |
| 39 | and then exit. None of the above programs will have run yet. The task |
| 40 | that called GCC will then execute the script and cause cpp,etc. to run. |
| 41 | The caller must invoke pfinish before calling exit. This adds |
| 42 | the finishing touches to the generated script. */ |
| 43 | |
| 44 | static int first_time = 1; |
| 45 | |
| 46 | extern void mpwify_filename PARAMS ((const char *, char *)); |
| 47 | |
| 48 | int |
| 49 | pexecute (program, argv, this_pname, temp_base, errmsg_fmt, errmsg_arg, flags) |
| 50 | const char *program; |
| 51 | char * const *argv; |
| 52 | const char *this_pname; |
| 53 | const char *temp_base; |
| 54 | char **errmsg_fmt, **errmsg_arg; |
| 55 | int flags; |
| 56 | { |
| 57 | char tmpprogram[255]; |
| 58 | char *cp, *tmpname; |
| 59 | int i; |
| 60 | |
| 61 | mpwify_filename (program, tmpprogram); |
| 62 | if (first_time) |
| 63 | { |
| 64 | printf ("Set Failed 0\n"); |
| 65 | first_time = 0; |
| 66 | } |
| 67 | |
| 68 | fputs ("If {Failed} == 0\n", stdout); |
| 69 | /* If being verbose, output a copy of the command. It should be |
| 70 | accurate enough and escaped enough to be "clickable". */ |
| 71 | if (flags & PEXECUTE_VERBOSE) |
| 72 | { |
| 73 | fputs ("\tEcho ", stdout); |
| 74 | fputc ('\'', stdout); |
| 75 | fputs (tmpprogram, stdout); |
| 76 | fputc ('\'', stdout); |
| 77 | fputc (' ', stdout); |
| 78 | for (i=1; argv[i]; i++) |
| 79 | { |
| 80 | fputc ('\'', stdout); |
| 81 | /* See if we have an argument that needs fixing. */ |
| 82 | if (strchr(argv[i], '/')) |
| 83 | { |
| 84 | tmpname = (char *) xmalloc (256); |
| 85 | mpwify_filename (argv[i], tmpname); |
| 86 | argv[i] = tmpname; |
| 87 | } |
| 88 | for (cp = argv[i]; *cp; cp++) |
| 89 | { |
| 90 | /* Write an Option-d escape char in front of special chars. */ |
| 91 | if (strchr("'+", *cp)) |
| 92 | fputc ('\266', stdout); |
| 93 | fputc (*cp, stdout); |
| 94 | } |
| 95 | fputc ('\'', stdout); |
| 96 | fputc (' ', stdout); |
| 97 | } |
| 98 | fputs ("\n", stdout); |
| 99 | } |
| 100 | fputs ("\t", stdout); |
| 101 | fputs (tmpprogram, stdout); |
| 102 | fputc (' ', stdout); |
| 103 | |
| 104 | for (i=1; argv[i]; i++) |
| 105 | { |
| 106 | /* See if we have an argument that needs fixing. */ |
| 107 | if (strchr(argv[i], '/')) |
| 108 | { |
| 109 | tmpname = (char *) xmalloc (256); |
| 110 | mpwify_filename (argv[i], tmpname); |
| 111 | argv[i] = tmpname; |
| 112 | } |
| 113 | if (strchr (argv[i], ' ')) |
| 114 | fputc ('\'', stdout); |
| 115 | for (cp = argv[i]; *cp; cp++) |
| 116 | { |
| 117 | /* Write an Option-d escape char in front of special chars. */ |
| 118 | if (strchr("'+", *cp)) |
| 119 | fputc ('\266', stdout); |
| 120 | fputc (*cp, stdout); |
| 121 | } |
| 122 | if (strchr (argv[i], ' ')) |
| 123 | fputc ('\'', stdout); |
| 124 | fputc (' ', stdout); |
| 125 | } |
| 126 | |
| 127 | fputs ("\n", stdout); |
| 128 | |
| 129 | /* Output commands that arrange to clean up and exit if a failure occurs. |
| 130 | We have to be careful to collect the status from the program that was |
| 131 | run, rather than some other script command. Also, we don't exit |
| 132 | immediately, since necessary cleanups are at the end of the script. */ |
| 133 | fputs ("\tSet TmpStatus {Status}\n", stdout); |
| 134 | fputs ("\tIf {TmpStatus} != 0\n", stdout); |
| 135 | fputs ("\t\tSet Failed {TmpStatus}\n", stdout); |
| 136 | fputs ("\tEnd\n", stdout); |
| 137 | fputs ("End\n", stdout); |
| 138 | |
| 139 | /* We're just composing a script, can't fail here. */ |
| 140 | return 0; |
| 141 | } |
| 142 | |
| 143 | int |
| 144 | pwait (pid, status, flags) |
| 145 | int pid; |
| 146 | int *status; |
| 147 | int flags; |
| 148 | { |
| 149 | *status = 0; |
| 150 | return 0; |
| 151 | } |
| 152 | |
| 153 | /* Write out commands that will exit with the correct error code |
| 154 | if something in the script failed. */ |
| 155 | |
| 156 | void |
| 157 | pfinish () |
| 158 | { |
| 159 | printf ("\tExit \"{Failed}\"\n"); |
| 160 | } |
| 161 | |