1 /*
2 * Convert Apple .strings file (UTF-16 BE text file) to GNU gettext .po files.
3 *
4 * Copyright 2007-2014 by Apple Inc.
5 *
6 * Licensed under Apache License v2.0. See the file "LICENSE" for more information.
7 *
8 * Usage:
9 *
10 * strings2po filename.strings filename.po
11 *
12 * Compile with:
13 *
14 * gcc -o strings2po strings2po.c
15 */
16
17 #include <stdio.h>
18 #include <stdlib.h>
19
20
21 /*
22 * The .strings file format is simple:
23 *
24 * // comment
25 * "id" = "str";
26 *
27 * Both the id and str strings use standard C quoting for special characters
28 * like newline and the double quote character.
29 */
30
31 /*
32 * Local functions...
33 */
34
35 static int read_strings(FILE *strings, char *buffer, size_t bufsize,
36 char **id, char **str);
37 static void write_po(FILE *po, const char *what, const char *s);
38
39
40 /*
41 * main() - Convert .strings file to .po.
42 */
43
44 int /* O - Exit code */
main(int argc,char * argv[])45 main(int argc, /* I - Number of command-line args */
46 char *argv[]) /* I - Command-line arguments */
47 {
48 FILE *strings, /* .strings file */
49 *po; /* .po file */
50 char iconv[1024], /* iconv command */
51 buffer[8192], /* Line buffer */
52 *id, /* ID string */
53 *str; /* Translation string */
54 int count; /* Number of messages converted */
55
56
57 if (argc != 3)
58 {
59 puts("Usage: strings2po filename.strings filename.po");
60 return (1);
61 }
62
63 /*
64 * Cheat by using iconv to convert the .strings file from UTF-16 to UTF-8
65 * which is what we need for the .po file (and it makes things a lot
66 * simpler...)
67 */
68
69 snprintf(iconv, sizeof(iconv), "iconv -f utf-16 -t utf-8 '%s'", argv[1]);
70 if ((strings = popen(iconv, "r")) == NULL)
71 {
72 perror(argv[1]);
73 return (1);
74 }
75
76 if ((po = fopen(argv[2], "w")) == NULL)
77 {
78 perror(argv[2]);
79 pclose(strings);
80 return (1);
81 }
82
83 count = 0;
84
85 while (read_strings(strings, buffer, sizeof(buffer), &id, &str))
86 {
87 count ++;
88 write_po(po, "msgid", id);
89 write_po(po, "msgstr", str);
90 }
91
92 pclose(strings);
93 fclose(po);
94
95 printf("%s: %d messages.\n", argv[2], count);
96
97 return (0);
98 }
99
100
101 /*
102 * 'read_strings()' - Read a line from a .strings file.
103 */
104
105 static int /* O - 1 on success, 0 on failure */
read_strings(FILE * strings,char * buffer,size_t bufsize,char ** id,char ** str)106 read_strings(FILE *strings, /* I - .strings file */
107 char *buffer, /* I - Line buffer */
108 size_t bufsize, /* I - Size of line buffer */
109 char **id, /* O - Pointer to ID string */
110 char **str) /* O - Pointer to translation string */
111 {
112 char *bufptr; /* Pointer into buffer */
113
114
115 while (fgets(buffer, (int)bufsize, strings))
116 {
117 if (buffer[0] != '\"')
118 continue;
119
120 *id = buffer + 1;
121
122 for (bufptr = buffer + 1; *bufptr && *bufptr != '\"'; bufptr ++)
123 if (*bufptr == '\\')
124 bufptr ++;
125
126 if (*bufptr != '\"')
127 continue;
128
129 *bufptr++ = '\0';
130
131 while (*bufptr && *bufptr != '\"')
132 bufptr ++;
133
134 if (!*bufptr)
135 continue;
136
137 bufptr ++;
138 *str = bufptr;
139
140 for (; *bufptr && *bufptr != '\"'; bufptr ++)
141 if (*bufptr == '\\')
142 bufptr ++;
143
144 if (*bufptr != '\"')
145 continue;
146
147 *bufptr = '\0';
148
149 return (1);
150 }
151
152 return (0);
153 }
154
155
156 /*
157 * 'write_po()' - Write a line to the .po file.
158 */
159
160 static void
write_po(FILE * po,const char * what,const char * s)161 write_po(FILE *po, /* I - .po file */
162 const char *what, /* I - Type of string */
163 const char *s) /* I - String to write */
164 {
165 fprintf(po, "%s \"%s\"\n", what, s);
166 }
167