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3 | <!-- This HTML file has been created by texi2html 1.54 | |
4 | from gettext.texi on 25 January 1999 --> | |
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6 | <TITLE>GNU gettext utilities - Making the Initial PO File</TITLE> | |
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13 | <p>Go to the <A HREF="gettext_1.html">first</A>, <A HREF="gettext_3.html">previous</A>, <A HREF="gettext_5.html">next</A>, <A HREF="gettext_12.html">last</A> section, <A HREF="gettext_toc.html">table of contents</A>. | |
14 | <P><HR><P> | |
15 | ||
16 | ||
17 | <H1><A NAME="SEC19" HREF="gettext_toc.html#TOC19">Making the Initial PO File</A></H1> | |
18 | ||
19 | ||
20 | ||
21 | <H2><A NAME="SEC20" HREF="gettext_toc.html#TOC20">Invoking the <CODE>xgettext</CODE> Program</A></H2> | |
22 | ||
23 | ||
24 | <PRE> | |
25 | xgettext [<VAR>option</VAR>] <VAR>inputfile</VAR> ... | |
26 | </PRE> | |
27 | ||
28 | <DL COMPACT> | |
29 | ||
30 | <DT><SAMP>`-a'</SAMP> | |
31 | <DD> | |
32 | <DT><SAMP>`--extract-all'</SAMP> | |
33 | <DD> | |
34 | Extract all strings. | |
35 | ||
36 | <DT><SAMP>`-c [<VAR>tag</VAR>]'</SAMP> | |
37 | <DD> | |
38 | <DT><SAMP>`--add-comments[=<VAR>tag</VAR>]'</SAMP> | |
39 | <DD> | |
40 | Place comment block with <VAR>tag</VAR> (or those preceding keyword lines) | |
41 | in output file. | |
42 | ||
43 | <DT><SAMP>`-C'</SAMP> | |
44 | <DD> | |
45 | <DT><SAMP>`--c++'</SAMP> | |
46 | <DD> | |
47 | Recognize C++ style comments. | |
48 | ||
49 | <DT><SAMP>`--debug'</SAMP> | |
50 | <DD> | |
51 | Use the flags <KBD>c-format</KBD> and <KBD>possible-c-format</KBD> to show who was | |
52 | responsible for marking a message as a format string. The later form is | |
53 | used if the <CODE>xgettext</CODE> program decided, the format form is used if | |
54 | the programmer prescribed it. | |
55 | ||
56 | By default only the <KBD>c-format</KBD> form is used. The translator should | |
57 | not have to care about these details. | |
58 | ||
59 | <DT><SAMP>`-d <VAR>name</VAR>'</SAMP> | |
60 | <DD> | |
61 | <DT><SAMP>`--default-domain=<VAR>name</VAR>'</SAMP> | |
62 | <DD> | |
63 | Use <TT>`<VAR>name</VAR>.po'</TT> for output (instead of <TT>`messages.po'</TT>). | |
64 | ||
65 | The special domain name <TT>`-'</TT> or <TT>`/dev/stdout'</TT> means to write | |
66 | the output to <TT>`stdout'</TT>. | |
67 | ||
68 | <DT><SAMP>`-D <VAR>directory</VAR>'</SAMP> | |
69 | <DD> | |
70 | <DT><SAMP>`--directory=<VAR>directory</VAR>'</SAMP> | |
71 | <DD> | |
72 | Change to <VAR>directory</VAR> before beginning to search and scan source | |
73 | files. The resulting <TT>`.po'</TT> file will be written relative to the | |
74 | original directory, though. | |
75 | ||
76 | <DT><SAMP>`-f <VAR>file</VAR>'</SAMP> | |
77 | <DD> | |
78 | <DT><SAMP>`--files-from=<VAR>file</VAR>'</SAMP> | |
79 | <DD> | |
80 | Read the names of the input files from <VAR>file</VAR> instead of getting | |
81 | them from the command line. | |
82 | ||
83 | <DT><SAMP>`--force'</SAMP> | |
84 | <DD> | |
85 | Always write output file even if no message is defined. | |
86 | ||
87 | <DT><SAMP>`-h'</SAMP> | |
88 | <DD> | |
89 | <DT><SAMP>`--help'</SAMP> | |
90 | <DD> | |
91 | Display this help and exit. | |
92 | ||
93 | <DT><SAMP>`-I <VAR>list</VAR>'</SAMP> | |
94 | <DD> | |
95 | <DT><SAMP>`--input-path=<VAR>list</VAR>'</SAMP> | |
96 | <DD> | |
97 | List of directories searched for input files. | |
98 | ||
99 | <DT><SAMP>`-j'</SAMP> | |
100 | <DD> | |
101 | <DT><SAMP>`--join-existing'</SAMP> | |
102 | <DD> | |
103 | Join messages with existing file. | |
104 | ||
105 | <DT><SAMP>`-k <VAR>word</VAR>'</SAMP> | |
106 | <DD> | |
107 | <DT><SAMP>`--keyword[=<VAR>word</VAR>]'</SAMP> | |
108 | <DD> | |
109 | Additonal keyword to be looked for (without <VAR>word</VAR> means not to | |
110 | use default keywords). | |
111 | ||
112 | The default keywords, which are always looked for if not explicitly | |
113 | disabled, are <CODE>gettext</CODE>, <CODE>dgettext</CODE>, <CODE>dcgettext</CODE> and | |
114 | <CODE>gettext_noop</CODE>. | |
115 | ||
116 | <DT><SAMP>`-m [<VAR>string</VAR>]'</SAMP> | |
117 | <DD> | |
118 | <DT><SAMP>`--msgstr-prefix[=<VAR>string</VAR>]'</SAMP> | |
119 | <DD> | |
120 | Use <VAR>string</VAR> or "" as prefix for msgstr entries. | |
121 | ||
122 | <DT><SAMP>`-M [<VAR>string</VAR>]'</SAMP> | |
123 | <DD> | |
124 | <DT><SAMP>`--msgstr-suffix[=<VAR>string</VAR>]'</SAMP> | |
125 | <DD> | |
126 | Use <VAR>string</VAR> or "" as suffix for msgstr entries. | |
127 | ||
128 | <DT><SAMP>`--no-location'</SAMP> | |
129 | <DD> | |
130 | Do not write <SAMP>`#: <VAR>filename</VAR>:<VAR>line</VAR>'</SAMP> lines. | |
131 | ||
132 | <DT><SAMP>`-n'</SAMP> | |
133 | <DD> | |
134 | <DT><SAMP>`--add-location'</SAMP> | |
135 | <DD> | |
136 | Generate <SAMP>`#: <VAR>filename</VAR>:<VAR>line</VAR>'</SAMP> lines (default). | |
137 | ||
138 | <DT><SAMP>`--omit-header'</SAMP> | |
139 | <DD> | |
140 | Don't write header with <SAMP>`msgid ""'</SAMP> entry. | |
141 | ||
142 | This is useful for testing purposes because it eliminates a source | |
143 | of variance for generated <CODE>.gmo</CODE> files. We can ship some of | |
144 | these files in the GNU <CODE>gettext</CODE> package, and the result of | |
145 | regenerating them through <CODE>msgfmt</CODE> should yield the same values. | |
146 | ||
147 | <DT><SAMP>`-p <VAR>dir</VAR>'</SAMP> | |
148 | <DD> | |
149 | <DT><SAMP>`--output-dir=<VAR>dir</VAR>'</SAMP> | |
150 | <DD> | |
151 | Output files will be placed in directory <VAR>dir</VAR>. | |
152 | ||
153 | <DT><SAMP>`-s'</SAMP> | |
154 | <DD> | |
155 | <DT><SAMP>`--sort-output'</SAMP> | |
156 | <DD> | |
157 | Generate sorted output and remove duplicates. | |
158 | ||
159 | <DT><SAMP>`--strict'</SAMP> | |
160 | <DD> | |
161 | Write out strict Uniforum conforming PO file. | |
162 | ||
163 | <DT><SAMP>`-v'</SAMP> | |
164 | <DD> | |
165 | <DT><SAMP>`--version'</SAMP> | |
166 | <DD> | |
167 | Output version information and exit. | |
168 | ||
169 | <DT><SAMP>`-x <VAR>file</VAR>'</SAMP> | |
170 | <DD> | |
171 | <DT><SAMP>`--exclude-file=<VAR>file</VAR>'</SAMP> | |
172 | <DD> | |
173 | Entries from <VAR>file</VAR> are not extracted. | |
174 | ||
175 | </DL> | |
176 | ||
177 | <P> | |
178 | Search path for supplementary PO files is: | |
179 | <TT>`/usr/local/share/nls/src/'</TT>. | |
180 | ||
181 | </P> | |
182 | <P> | |
183 | If <VAR>inputfile</VAR> is <SAMP>`-'</SAMP>, standard input is read. | |
184 | ||
185 | </P> | |
186 | <P> | |
187 | This implementation of <CODE>xgettext</CODE> is able to process a few awkward | |
188 | cases, like strings in preprocessor macros, ANSI concatenation of | |
189 | adjacent strings, and escaped end of lines for continued strings. | |
190 | ||
191 | </P> | |
192 | ||
193 | ||
194 | <H2><A NAME="SEC21" HREF="gettext_toc.html#TOC21">C Sources Context</A></H2> | |
195 | ||
196 | <P> | |
197 | PO mode is particularily powerful when used with PO files | |
198 | created through GNU <CODE>gettext</CODE> utilities, as those utilities | |
199 | insert special comments in the PO files they generate. | |
200 | Some of these special comments relate the PO file entry to | |
201 | exactly where the untranslated string appears in the program sources. | |
202 | ||
203 | </P> | |
204 | <P> | |
205 | When the translator gets to an untranslated entry, she is fairly | |
206 | often faced with an original string which is not as informative as | |
207 | it normally should be, being succinct, cryptic, or otherwise ambiguous. | |
208 | Before chosing how to translate the string, she needs to understand | |
209 | better what the string really means and how tight the translation has | |
210 | to be. Most of times, when problems arise, the only way left to make | |
211 | her judgment is looking at the true program sources from where this | |
212 | string originated, searching for surrounding comments the programmer | |
213 | might have put in there, and looking around for helping clues of | |
214 | <EM>any</EM> kind. | |
215 | ||
216 | </P> | |
217 | <P> | |
218 | Surely, when looking at program sources, the translator will receive | |
219 | more help if she is a fluent programmer. However, even if she is | |
220 | not versed in programming and feels a little lost in C code, the | |
221 | translator should not be shy at taking a look, once in a while. | |
222 | It is most probable that she will still be able to find some of the | |
223 | hints she needs. She will learn quickly to not feel uncomfortable | |
224 | in program code, paying more attention to programmer's comments, | |
225 | variable and function names (if he dared chosing them well), and | |
226 | overall organization, than to programmation itself. | |
227 | ||
228 | </P> | |
229 | <P> | |
230 | The following commands are meant to help the translator at getting | |
231 | program source context for a PO file entry. | |
232 | ||
233 | </P> | |
234 | <DL COMPACT> | |
235 | ||
236 | <DT><KBD>s</KBD> | |
237 | <DD> | |
238 | Resume the display of a program source context, or cycle through them. | |
239 | ||
240 | <DT><KBD>M-s</KBD> | |
241 | <DD> | |
242 | Display of a program source context selected by menu. | |
243 | ||
244 | <DT><KBD>S</KBD> | |
245 | <DD> | |
246 | Add a directory to the search path for source files. | |
247 | ||
248 | <DT><KBD>M-S</KBD> | |
249 | <DD> | |
250 | Delete a directory from the search path for source files. | |
251 | ||
252 | </DL> | |
253 | ||
254 | <P> | |
255 | The commands <KBD>s</KBD> (<CODE>po-cycle-reference</CODE>) and <KBD>M-s</KBD> | |
256 | (<CODE>po-select-source-reference</CODE>) both open another window displaying | |
257 | some source program file, and already positioned in such a way that | |
258 | it shows an actual use of the string to be translated. By doing | |
259 | so, the command gives source program context for the string. But if | |
260 | the entry has no source context references, or if all references | |
261 | are unresolved along the search path for program sources, then the | |
262 | command diagnoses this as an error. | |
263 | ||
264 | </P> | |
265 | <P> | |
266 | Even if <KBD>s</KBD> (or <KBD>M-s</KBD>) opens a new window, the cursor stays | |
267 | in the PO file window. If the translator really wants to | |
268 | get into the program source window, she ought to do it explicitly, | |
269 | maybe by using command <KBD>O</KBD>. | |
270 | ||
271 | </P> | |
272 | <P> | |
273 | When <KBD>s</KBD> is typed for the first time, or for a PO file entry which | |
274 | is different of the last one used for getting source context, then the | |
275 | command reacts by giving the first context available for this entry, | |
276 | if any. If some context has already been recently displayed for the | |
277 | current PO file entry, and the translator wandered off to do other | |
278 | things, typing <KBD>s</KBD> again will merely resume, in another window, | |
279 | the context last displayed. In particular, if the translator moved | |
280 | the cursor away from the context in the source file, the command will | |
281 | bring the cursor back to the context. By using <KBD>s</KBD> many times | |
282 | in a row, with no other commands intervening, PO mode will cycle to | |
283 | the next available contexts for this particular entry, getting back | |
284 | to the first context once the last has been shown. | |
285 | ||
286 | </P> | |
287 | <P> | |
288 | The command <KBD>M-s</KBD> behaves differently. Instead of cycling through | |
289 | references, it lets the translator choose of particular reference among | |
290 | many, and displays that reference. It is best used with completion, | |
291 | if the translator types <KBD>TAB</KBD> immediately after <KBD>M-s</KBD>, in | |
292 | response to the question, she will be offered a menu of all possible | |
293 | references, as a reminder of which are the acceptable answers. | |
294 | This command is useful only where there are really many contexts | |
295 | available for a single string to translate. | |
296 | ||
297 | </P> | |
298 | <P> | |
299 | Program source files are usually found relative to where the PO | |
300 | file stands. As a special provision, when this fails, the file is | |
301 | also looked for, but relative to the directory immediately above it. | |
302 | Those two cases take proper care of most PO files. However, it might | |
303 | happen that a PO file has been moved, or is edited in a different | |
304 | place than its normal location. When this happens, the translator | |
305 | should tell PO mode in which directory normally sits the genuine PO | |
306 | file. Many such directories may be specified, and all together, they | |
307 | constitute what is called the <STRONG>search path</STRONG> for program sources. | |
308 | The command <KBD>S</KBD> (<CODE>po-consider-source-path</CODE>) is used to interactively | |
309 | enter a new directory at the front of the search path, and the command | |
310 | <KBD>M-S</KBD> (<CODE>po-ignore-source-path</CODE>) is used to select, with completion, | |
311 | one of the directories she does not want anymore on the search path. | |
312 | ||
313 | </P> | |
314 | ||
315 | ||
316 | <H2><A NAME="SEC22" HREF="gettext_toc.html#TOC22">Using Translation Compendiums</A></H2> | |
317 | ||
318 | <P> | |
319 | Compendiums are yet to be implemented. | |
320 | ||
321 | </P> | |
322 | <P> | |
323 | An incoming PO mode feature will let the translator maintain a | |
324 | compendium of already achieved translations. A <STRONG>compendium</STRONG> | |
325 | is a special PO file containing a set of translations recurring in | |
326 | many different packages. The translator will be given commands for | |
327 | adding entries to her compendium, and later initializing untranslated | |
328 | entries, or updating already translated entries, from translations | |
329 | kept in the compendium. For this to work, however, the compendium | |
330 | would have to be normalized. See section <A HREF="gettext_2.html#SEC12">Normalizing Strings in Entries</A>. | |
331 | ||
332 | </P> | |
333 | ||
334 | <P><HR><P> | |
335 | <p>Go to the <A HREF="gettext_1.html">first</A>, <A HREF="gettext_3.html">previous</A>, <A HREF="gettext_5.html">next</A>, <A HREF="gettext_12.html">last</A> section, <A HREF="gettext_toc.html">table of contents</A>. | |
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