1 /* Writing tcl/msgcat .msg files.
2 Copyright (C) 2002-2003, 2005 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 "write-tcl.h"
26
27 #include <errno.h>
28 #include <stdbool.h>
29 #include <stdio.h>
30 #include <string.h>
31
32 #include "error.h"
33 #include "xerror.h"
34 #include "message.h"
35 #include "msgl-iconv.h"
36 #include "po-charset.h"
37 #include "xalloc.h"
38 #include "xallocsa.h"
39 #include "pathname.h"
40 #include "fwriteerror.h"
41 #include "exit.h"
42 #include "utf8-ucs4.h"
43 #include "gettext.h"
44
45 #define _(str) gettext (str)
46
47
48 /* Write a string in Tcl Unicode notation to the given stream.
49 Tcl 8 uses Unicode for its internal string representation.
50 In tcl-8.3.3, the .msg files are read in using the locale dependent
51 encoding. The only way to specify strings in an encoding independent
52 form is the \unnnn notation. Newer tcl versions have this fixed:
53 they read the .msg files in UTF-8 encoding. */
54 static void
write_tcl_string(FILE * stream,const char * str)55 write_tcl_string (FILE *stream, const char *str)
56 {
57 static const char hexdigit[] = "0123456789abcdef";
58 const char *str_limit = str + strlen (str);
59
60 fprintf (stream, "\"");
61 while (str < str_limit)
62 {
63 unsigned int uc;
64 unsigned int count;
65 count = u8_mbtouc (&uc, (const unsigned char *) str, str_limit - str);
66 if (uc < 0x10000)
67 {
68 /* Single UCS-2 'char'. */
69 if (uc == 0x000a)
70 fprintf (stream, "\\n");
71 else if (uc == 0x000d)
72 fprintf (stream, "\\r");
73 else if (uc == 0x0022)
74 fprintf (stream, "\\\"");
75 else if (uc == 0x0024)
76 fprintf (stream, "\\$");
77 else if (uc == 0x005b)
78 fprintf (stream, "\\[");
79 else if (uc == 0x005c)
80 fprintf (stream, "\\\\");
81 else if (uc == 0x005d)
82 fprintf (stream, "\\]");
83 /* No need to escape '{' and '}' because we don't have opening
84 braces outside the strings. */
85 #if 0
86 else if (uc == 0x007b)
87 fprintf (stream, "\\{");
88 else if (uc == 0x007d)
89 fprintf (stream, "\\}");
90 #endif
91 else if (uc >= 0x0020 && uc < 0x007f)
92 fprintf (stream, "%c", uc);
93 else
94 fprintf (stream, "\\u%c%c%c%c",
95 hexdigit[(uc >> 12) & 0x0f], hexdigit[(uc >> 8) & 0x0f],
96 hexdigit[(uc >> 4) & 0x0f], hexdigit[uc & 0x0f]);
97 }
98 else
99 /* The \unnnn notation doesn't support characters >= 0x10000.
100 We output them as UTF-8 byte sequences and hope that either
101 the Tcl version reading them will be new enough or that the
102 user is using an UTF-8 locale. */
103 fwrite (str, 1, count, stream);
104 str += count;
105 }
106 fprintf (stream, "\"");
107 }
108
109
110 static void
write_msg(FILE * output_file,message_list_ty * mlp,const char * locale_name)111 write_msg (FILE *output_file, message_list_ty *mlp, const char *locale_name)
112 {
113 size_t j;
114
115 /* We don't care about esthetic formattic of the output (like respecting
116 a maximum line width, or including the translator comments) because
117 the \unnnn notation is unesthetic anyway. Translators shall edit
118 the PO file. */
119 for (j = 0; j < mlp->nitems; j++)
120 {
121 message_ty *mp = mlp->item[j];
122
123 if (is_header (mp))
124 /* Tcl's msgcat unit ignores this, but msgunfmt needs it. */
125 fprintf (output_file, "set ::msgcat::header ");
126 else
127 {
128 fprintf (output_file, "::msgcat::mcset %s ", locale_name);
129 write_tcl_string (output_file, mp->msgid);
130 fprintf (output_file, " ");
131 }
132 write_tcl_string (output_file, mp->msgstr);
133 fprintf (output_file, "\n");
134 }
135 }
136
137 int
msgdomain_write_tcl(message_list_ty * mlp,const char * canon_encoding,const char * locale_name,const char * directory)138 msgdomain_write_tcl (message_list_ty *mlp, const char *canon_encoding,
139 const char *locale_name,
140 const char *directory)
141 {
142 /* If no entry for this domain don't even create the file. */
143 if (mlp->nitems == 0)
144 return 0;
145
146 /* Determine whether mlp has entries with context. */
147 {
148 bool has_context;
149 size_t j;
150
151 has_context = false;
152 for (j = 0; j < mlp->nitems; j++)
153 if (mlp->item[j]->msgctxt != NULL)
154 has_context = true;
155 if (has_context)
156 {
157 multiline_error (xstrdup (""),
158 xstrdup (_("\
159 message catalog has context dependent translations\n\
160 but the Tcl message catalog format doesn't support contexts\n")));
161 return 1;
162 }
163 }
164
165 /* Determine whether mlp has plural entries. */
166 {
167 bool has_plural;
168 size_t j;
169
170 has_plural = false;
171 for (j = 0; j < mlp->nitems; j++)
172 if (mlp->item[j]->msgid_plural != NULL)
173 has_plural = true;
174 if (has_plural)
175 {
176 multiline_error (xstrdup (""),
177 xstrdup (_("\
178 message catalog has plural form translations\n\
179 but the Tcl message catalog format doesn't support plural handling\n")));
180 return 1;
181 }
182 }
183
184 /* Convert the messages to Unicode. */
185 iconv_message_list (mlp, canon_encoding, po_charset_utf8, NULL);
186
187 /* Now create the file. */
188 {
189 size_t len;
190 char *frobbed_locale_name;
191 char *p;
192 char *file_name;
193 FILE *output_file;
194
195 /* Convert the locale name to lowercase and remove any encoding. */
196 len = strlen (locale_name);
197 frobbed_locale_name = (char *) xallocsa (len + 1);
198 memcpy (frobbed_locale_name, locale_name, len + 1);
199 for (p = frobbed_locale_name; *p != '\0'; p++)
200 if (*p >= 'A' && *p <= 'Z')
201 *p = *p - 'A' + 'a';
202 else if (*p == '.')
203 {
204 *p = '\0';
205 break;
206 }
207
208 file_name = concatenated_pathname (directory, frobbed_locale_name, ".msg");
209
210 output_file = fopen (file_name, "w");
211 if (output_file == NULL)
212 {
213 error (0, errno, _("error while opening \"%s\" for writing"),
214 file_name);
215 freesa (frobbed_locale_name);
216 return 1;
217 }
218
219 write_msg (output_file, mlp, frobbed_locale_name);
220
221 /* Make sure nothing went wrong. */
222 if (fwriteerror (output_file))
223 error (EXIT_FAILURE, errno, _("error while writing \"%s\" file"),
224 file_name);
225
226 freesa (frobbed_locale_name);
227 }
228
229 return 0;
230 }
231