1 /* Reading tcl/msgcat .msg files.
2 Copyright (C) 2002-2003, 2005-2008, 2010-2011, 2018 Free Software
3 Foundation, Inc.
4 Written by Bruno Haible <bruno@clisp.org>, 2002.
5
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <https://www.gnu.org/licenses/>. */
18
19 #ifdef HAVE_CONFIG_H
20 # include <config.h>
21 #endif
22 #include <alloca.h>
23
24 /* Specification. */
25 #include "read-tcl.h"
26
27 #include <errno.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30
31 #include "msgunfmt.h"
32 #include "relocatable.h"
33 #include "concat-filename.h"
34 #include "sh-quote.h"
35 #include "spawn-pipe.h"
36 #include "wait-process.h"
37 #include "read-catalog.h"
38 #include "read-po.h"
39 #include "xmalloca.h"
40 #include "error.h"
41 #include "gettext.h"
42
43 #define _(str) gettext (str)
44
45
46 /* A Tcl .msg file contains Tcl commands. It is best interpreted by Tcl
47 itself. But we redirect the msgcat::mcset function so that it passes
48 the msgid/msgstr pair to us, instead of storing it in the hash table. */
49
50 msgdomain_list_ty *
msgdomain_read_tcl(const char * locale_name,const char * directory)51 msgdomain_read_tcl (const char *locale_name, const char *directory)
52 {
53 const char *gettextdatadir;
54 char *tclscript;
55 size_t len;
56 char *frobbed_locale_name;
57 char *p;
58 char *file_name;
59 char *argv[4];
60 pid_t child;
61 int fd[1];
62 FILE *fp;
63 msgdomain_list_ty *mdlp;
64 int exitstatus;
65 size_t k;
66
67 /* Make it possible to override the msgunfmt.tcl location. This is
68 necessary for running the testsuite before "make install". */
69 gettextdatadir = getenv ("GETTEXTTCLDIR");
70 if (gettextdatadir == NULL || gettextdatadir[0] == '\0')
71 gettextdatadir = relocate (GETTEXTDATADIR);
72
73 tclscript = xconcatenated_filename (gettextdatadir, "msgunfmt.tcl", NULL);
74
75 /* Convert the locale name to lowercase and remove any encoding. */
76 len = strlen (locale_name);
77 frobbed_locale_name = (char *) xmalloca (len + 1);
78 memcpy (frobbed_locale_name, locale_name, len + 1);
79 for (p = frobbed_locale_name; *p != '\0'; p++)
80 if (*p >= 'A' && *p <= 'Z')
81 *p = *p - 'A' + 'a';
82 else if (*p == '.')
83 {
84 *p = '\0';
85 break;
86 }
87
88 file_name = xconcatenated_filename (directory, frobbed_locale_name, ".msg");
89
90 freea (frobbed_locale_name);
91
92 /* Prepare arguments. */
93 argv[0] = "tclsh";
94 argv[1] = tclscript;
95 argv[2] = file_name;
96 argv[3] = NULL;
97
98 if (verbose)
99 {
100 char *command = shell_quote_argv (argv);
101 printf ("%s\n", command);
102 free (command);
103 }
104
105 /* Open a pipe to the Tcl interpreter. */
106 child = create_pipe_in ("tclsh", "tclsh", argv, DEV_NULL, false, true, true,
107 fd);
108
109 fp = fdopen (fd[0], "r");
110 if (fp == NULL)
111 error (EXIT_FAILURE, errno, _("fdopen() failed"));
112
113 /* Read the message list. */
114 mdlp = read_catalog_stream (fp, "(pipe)", "(pipe)", &input_format_po);
115
116 fclose (fp);
117
118 /* Remove zombie process from process list, and retrieve exit status. */
119 exitstatus =
120 wait_subprocess (child, "tclsh", false, false, true, true, NULL);
121 if (exitstatus != 0)
122 {
123 if (exitstatus == 2)
124 /* Special exitcode provided by msgunfmt.tcl. */
125 error (EXIT_FAILURE, ENOENT,
126 _("error while opening \"%s\" for reading"), file_name);
127 else
128 error (EXIT_FAILURE, 0, _("%s subprocess failed with exit code %d"),
129 "tclsh", exitstatus);
130 }
131
132 free (tclscript);
133
134 /* Move the header entry to the beginning. */
135 for (k = 0; k < mdlp->nitems; k++)
136 {
137 message_list_ty *mlp = mdlp->item[k]->messages;
138 size_t j;
139
140 for (j = 0; j < mlp->nitems; j++)
141 if (is_header (mlp->item[j]))
142 {
143 /* Found the header entry. */
144 if (j > 0)
145 {
146 message_ty *header = mlp->item[j];
147 size_t i;
148
149 for (i = j; i > 0; i--)
150 mlp->item[i] = mlp->item[i - 1];
151 mlp->item[0] = header;
152 }
153 break;
154 }
155 }
156
157 return mdlp;
158 }
159