1 /* Reading tcl/msgcat .msg files.
2 Copyright (C) 2002-2003, 2005-2006 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2002.
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
8 any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software Foundation,
17 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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 "pathname.h"
34 #include "sh-quote.h"
35 #include "pipe.h"
36 #include "wait-process.h"
37 #include "read-catalog.h"
38 #include "read-po.h"
39 #include "xallocsa.h"
40 #include "error.h"
41 #include "exit.h"
42 #include "gettext.h"
43
44 #define _(str) gettext (str)
45
46
47 /* A Tcl .msg file contains Tcl commands. It is best interpreted by Tcl
48 itself. But we redirect the msgcat::mcset function so that it passes
49 the msgid/msgstr pair to us, instead of storing it in the hash table. */
50
51 msgdomain_list_ty *
msgdomain_read_tcl(const char * locale_name,const char * directory)52 msgdomain_read_tcl (const char *locale_name, const char *directory)
53 {
54 const char *gettextdatadir;
55 char *tclscript;
56 size_t len;
57 char *frobbed_locale_name;
58 char *p;
59 char *file_name;
60 char *argv[4];
61 pid_t child;
62 int fd[1];
63 FILE *fp;
64 msgdomain_list_ty *mdlp;
65 int exitstatus;
66 size_t k;
67
68 /* Make it possible to override the msgunfmt.tcl location. This is
69 necessary for running the testsuite before "make install". */
70 gettextdatadir = getenv ("GETTEXTDATADIR");
71 if (gettextdatadir == NULL || gettextdatadir[0] == '\0')
72 gettextdatadir = relocate (GETTEXTDATADIR);
73
74 tclscript = concatenated_pathname (gettextdatadir, "msgunfmt.tcl", NULL);
75
76 /* Convert the locale name to lowercase and remove any encoding. */
77 len = strlen (locale_name);
78 frobbed_locale_name = (char *) xallocsa (len + 1);
79 memcpy (frobbed_locale_name, locale_name, len + 1);
80 for (p = frobbed_locale_name; *p != '\0'; p++)
81 if (*p >= 'A' && *p <= 'Z')
82 *p = *p - 'A' + 'a';
83 else if (*p == '.')
84 {
85 *p = '\0';
86 break;
87 }
88
89 file_name = concatenated_pathname (directory, frobbed_locale_name, ".msg");
90
91 freesa (frobbed_locale_name);
92
93 /* Prepare arguments. */
94 argv[0] = "tclsh";
95 argv[1] = tclscript;
96 argv[2] = file_name;
97 argv[3] = NULL;
98
99 if (verbose)
100 {
101 char *command = shell_quote_argv (argv);
102 printf ("%s\n", command);
103 free (command);
104 }
105
106 /* Open a pipe to the Tcl interpreter. */
107 child = create_pipe_in ("tclsh", "tclsh", argv, DEV_NULL, false, true, true,
108 fd);
109
110 fp = fdopen (fd[0], "r");
111 if (fp == NULL)
112 error (EXIT_FAILURE, errno, _("fdopen() failed"));
113
114 /* Read the message list. */
115 mdlp = read_catalog_stream (fp, "(pipe)", "(pipe)", &input_format_po);
116
117 fclose (fp);
118
119 /* Remove zombie process from process list, and retrieve exit status. */
120 exitstatus = wait_subprocess (child, "tclsh", false, false, true, true);
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