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5a17353c DD |
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 |