1 /* This program is free software; you can redistribute it and/or modify
2 it under the terms of the GNU General Public License as published by
3 the Free Software Foundation; either version 2, or (at your option)
6 This program is distributed in the hope that it will be useful,
7 but WITHOUT ANY WARRANTY; without even the implied warranty of
8 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 GNU General Public License for more details. */
15 Original Author: athan@morgan.com <Andrew C. Athan> 2/1/94
16 Modified By: vdemarco@bou.shl.com
18 This package was written to support the NEXTSTEP concept of
19 "wrappers." These are essentially directories that are to be
20 treated as "files." This package allows such wrappers to be
21 "processed" on the way in and out of CVS. The intended use is to
22 wrap up a wrapper into a single tar, such that that tar can be
23 treated as a single binary file in CVS. To solve the problem
24 effectively, it was also necessary to be able to prevent rcsmerge
25 application at appropriate times.
28 Format of wrapper file ($CVSROOT/CVSROOT/cvswrappers or .cvswrappers)
30 wildcard [option value][option value]...
32 where option is one of
33 -m update methodology value: MERGE or COPY
34 -k default -k rcs option to use on import or add
36 and value is a single-quote delimited value.
39 *.nib -f 'gunzipuntar' -t 'targzip' -m 'COPY'
48 WrapMergeMethod mergeMethod;
51 static WrapperEntry **wrap_list=NULL;
52 static WrapperEntry **wrap_saved_list=NULL;
54 static int wrap_size=0;
55 static int wrap_count=0;
56 static int wrap_tempcount=0;
58 /* FIXME: the relationship between wrap_count, wrap_tempcount,
59 * wrap_saved_count, and wrap_saved_tempcount is not entirely clear;
60 * it is certainly suspicious that wrap_saved_count is never set to a
61 * value other than zero! If the variable isn't being used, it should
62 * be removed. And in general, we should describe how temporary
63 * vs. permanent wrappers are implemented, and then make sure the
64 * implementation is actually doing that.
66 * Right now things seem to be working, but that's no guarantee there
67 * isn't a bug lurking somewhere in the murk.
70 static int wrap_saved_count=0;
72 static int wrap_saved_tempcount=0;
74 #define WRAPPER_GROW 8
76 void wrap_add_entry PROTO((WrapperEntry *e,int temp));
77 void wrap_kill PROTO((void));
78 void wrap_kill_temp PROTO((void));
79 void wrap_free_entry PROTO((WrapperEntry *e));
80 void wrap_free_entry_internal PROTO((WrapperEntry *e));
81 void wrap_restore_saved PROTO((void));
85 /* FIXME-reentrancy: if we do a multithreaded server, will need to
86 move this to a per-connection data structure, or better yet
87 think about a cleaner solution. */
88 static int wrap_setup_already_done = 0;
91 if (wrap_setup_already_done != 0)
94 wrap_setup_already_done = 1;
97 if (!current_parsed_root->isremote)
102 file = xmalloc (strlen (current_parsed_root->directory)
103 + sizeof (CVSROOTADM)
104 + sizeof (CVSROOTADM_WRAPPER)
106 /* Then add entries found in repository, if it exists. */
107 (void) sprintf (file, "%s/%s/%s", current_parsed_root->directory, CVSROOTADM,
111 wrap_add_file(file,0);
116 /* Then add entries found in home dir, (if user has one) and file
118 homedir = get_homedir ();
119 /* If we can't find a home directory, ignore ~/.cvswrappers. This may
120 make tracking down problems a bit of a pain, but on the other
121 hand it might be obnoxious to complain when CVS will function
122 just fine without .cvswrappers (and many users won't even know what
126 char *file = strcat_filename_onto_homedir (homedir, CVSDOTWRAPPER);
129 wrap_add_file (file, 0);
134 /* FIXME: calling wrap_add() below implies that the CVSWRAPPERS
135 * environment variable contains exactly one "wrapper" -- a line
138 * FILENAME_PATTERN FLAG OPTS [ FLAG OPTS ...]
140 * This may disagree with the documentation, which states:
143 * A whitespace-separated list of file name patterns that CVS
144 * should treat as wrappers. *Note Wrappers::.
146 * Does this mean the environment variable can hold multiple
147 * wrappers lines? If so, a single call to wrap_add() is
151 /* Then add entries found in CVSWRAPPERS environment variable. */
152 wrap_add (getenv (WRAPPER_ENV), 0);
155 #ifdef CLIENT_SUPPORT
156 /* Send -W arguments for the wrappers to the server. The command must
157 be one that accepts them (e.g. update, import). */
163 for (i = 0; i < wrap_count + wrap_tempcount; ++i)
165 if (wrap_list[i]->tocvsFilter != NULL
166 || wrap_list[i]->fromcvsFilter != NULL)
167 /* For greater studliness we would print the offending option
168 and (more importantly) where we found it. */
170 -t and -f wrapper options are not supported remotely; ignored");
171 if (wrap_list[i]->mergeMethod == WRAP_COPY)
172 /* For greater studliness we would print the offending option
173 and (more importantly) where we found it. */
175 -m wrapper option is not supported remotely; ignored");
176 send_to_server ("Argument -W\012Argument ", 0);
177 send_to_server (wrap_list[i]->wildCard, 0);
178 send_to_server (" -k '", 0);
179 if (wrap_list[i]->rcsOption != NULL)
180 send_to_server (wrap_list[i]->rcsOption, 0);
182 send_to_server ("kv", 0);
183 send_to_server ("'\012", 0);
186 #endif /* CLIENT_SUPPORT */
188 #if defined(SERVER_SUPPORT) || defined(CLIENT_SUPPORT)
189 /* Output wrapper entries in the format of cvswrappers lines.
191 * This is useful when one side of a client/server connection wants to
192 * send its wrappers to the other; since the receiving side would like
193 * to use wrap_add() to incorporate the wrapper, it's best if the
194 * entry arrives in this format.
196 * The entries are stored in `line', which is allocated here. Caller
199 * If first_call_p is nonzero, then start afresh. */
201 wrap_unparse_rcs_options (line, first_call_p)
205 /* FIXME-reentrancy: we should design a reentrant interface, like
206 a callback which gets handed each wrapper (a multithreaded
207 server being the most concrete reason for this, but the
208 non-reentrant interface is fairly unnecessary/ugly). */
214 if (i >= wrap_count + wrap_tempcount) {
219 *line = xmalloc (strlen (wrap_list[i]->wildCard)
222 + (wrap_list[i]->rcsOption != NULL ?
223 strlen (wrap_list[i]->rcsOption) : 2)
225 + 1); /* leave room for '\0' */
227 strcpy (*line, wrap_list[i]->wildCard);
228 strcat (*line, " -k '");
229 if (wrap_list[i]->rcsOption != NULL)
230 strcat (*line, wrap_list[i]->rcsOption);
232 strcat (*line, "kv");
237 #endif /* SERVER_SUPPORT || CLIENT_SUPPORT */
240 * Remove fmt str specifier other than %% or %s. And allow
241 * only max_s %s specifiers
243 wrap_clean_fmt_str(char *fmt, int max_s)
246 if (fmt[0] == '%' && fmt[1])
251 if (fmt[1] == 's' && max_s > 0)
264 * Open a file and read lines, feeding each line to a line parser. Arrange
265 * for keeping a temporary list of wrappers at the end, if the "temp"
269 wrap_add_file (file, temp)
275 size_t line_allocated = 0;
277 wrap_restore_saved ();
281 fp = CVS_FOPEN (file, "r");
284 if (!existence_error (errno))
285 error (0, errno, "cannot open %s", file);
288 while (getline (&line, &line_allocated, fp) >= 0)
289 wrap_add (line, temp);
293 error (0, errno, "cannot read %s", file);
294 if (fclose (fp) == EOF)
295 error (0, errno, "cannot close %s", file);
303 wrap_free_entry(wrap_list[--wrap_count]);
309 WrapperEntry **temps=wrap_list+wrap_count;
311 while(wrap_tempcount)
312 wrap_free_entry(temps[--wrap_tempcount]);
319 wrap_free_entry_internal(e);
324 wrap_free_entry_internal(e)
329 free (e->tocvsFilter);
330 if (e->fromcvsFilter)
331 free (e->fromcvsFilter);
346 wrap_list=wrap_saved_list;
347 wrap_count=wrap_saved_count;
348 wrap_tempcount=wrap_saved_tempcount;
350 wrap_saved_list=NULL;
352 wrap_saved_tempcount=0;
356 wrap_add (line, isTemp)
365 if (!line || line[0] == '#')
368 memset (&e, 0, sizeof(e));
370 /* Search for the wild card */
371 while (*line && isspace ((unsigned char) *line))
374 *line && !isspace ((unsigned char) *line);
383 e.wildCard=xstrdup(temp);
387 /* Search for the option */
388 while(*line && *line!='-')
397 /* Search for the filter commandline */
398 for(++line;*line && *line!='\'';++line);
402 for(temp=++line;*line && (*line!='\'' || line[-1]=='\\');++line)
405 /* This used to "break;" (ignore the option) if there was a
406 single character between the single quotes (I'm guessing
407 that was accidental). Now it "break;"s if there are no
408 characters. I'm not sure either behavior is particularly
409 necessary--the current options might not require ''
410 arguments, but surely some future option legitimately
411 might. Also I'm not sure that ignoring the option is a
412 swift way to handle syntax errors in general. */
420 /* Before this is reenabled, need to address the problem in
421 commit.c (see http://www.cvshome.org/docs/infowrapper.html). */
423 "-t/-f wrappers not supported by this version of CVS");
426 free(e.fromcvsFilter);
427 /* FIXME: error message should say where the bad value
429 e.fromcvsFilter=expand_path (temp, "<wrapper>", 0);
430 if (!e.fromcvsFilter)
431 error (1, 0, "Correct above errors first");
434 /* Before this is reenabled, need to address the problem in
435 commit.c (see http://www.cvshome.org/docs/infowrapper.html). */
437 "-t/-f wrappers not supported by this version of CVS");
441 /* FIXME: error message should say where the bad value
443 e.tocvsFilter=expand_path (temp, "<wrapper>", 0);
445 error (1, 0, "Correct above errors first");
448 if(*temp=='C' || *temp=='c')
449 e.mergeMethod=WRAP_COPY;
451 e.mergeMethod=WRAP_MERGE;
456 e.rcsOption = strcmp (temp, "kv") ? xstrdup (temp) : NULL;
466 wrap_add_entry(&e, isTemp);
470 wrap_add_entry(e, temp)
475 if(wrap_count+wrap_tempcount>=wrap_size){
476 wrap_size += WRAPPER_GROW;
477 wrap_list = (WrapperEntry **) xrealloc ((char *) wrap_list,
479 sizeof (WrapperEntry *));
482 if(!temp && wrap_tempcount){
483 for(x=wrap_count+wrap_tempcount-1;x>=wrap_count;--x)
484 wrap_list[x+1]=wrap_list[x];
487 x=(temp ? wrap_count+(wrap_tempcount++):(wrap_count++));
488 wrap_list[x]=(WrapperEntry *)xmalloc(sizeof(WrapperEntry));
492 /* Return 1 if the given filename is a wrapper filename */
494 wrap_name_has (name,has)
498 int x,count=wrap_count+wrap_tempcount;
502 if (CVS_FNMATCH (wrap_list[x]->wildCard, name, 0) == 0){
505 temp=wrap_list[x]->tocvsFilter;
508 temp=wrap_list[x]->fromcvsFilter;
511 temp = wrap_list[x]->rcsOption;
524 static WrapperEntry *wrap_matching_entry PROTO ((const char *));
526 static WrapperEntry *
527 wrap_matching_entry (name)
530 int x,count=wrap_count+wrap_tempcount;
533 if (CVS_FNMATCH (wrap_list[x]->wildCard, name, 0) == 0)
535 return (WrapperEntry *)NULL;
538 /* Return the RCS options for FILENAME in a newly malloc'd string. If
539 ASFLAG, then include "-k" at the beginning (e.g. "-kb"), otherwise
540 just give the option itself (e.g. "b"). */
542 wrap_rcsoption (filename, asflag)
543 const char *filename;
546 WrapperEntry *e = wrap_matching_entry (filename);
549 if (e == NULL || e->rcsOption == NULL || (*e->rcsOption == '\0'))
552 buf = xmalloc (strlen (e->rcsOption) + 3);
556 strcat (buf, e->rcsOption);
560 strcpy (buf, e->rcsOption);
566 wrap_tocvs_process_file(fileName)
567 const char *fileName;
569 WrapperEntry *e=wrap_matching_entry(fileName);
570 static char *buf = NULL;
573 if(e==NULL || e->tocvsFilter==NULL)
578 buf = cvs_temp_name ();
580 args = xmalloc (strlen (e->tocvsFilter)
584 wrap_clean_fmt_str(e->tocvsFilter, 2);
585 sprintf (args, e->tocvsFilter, fileName, buf);
587 run_exec(RUN_TTY, RUN_TTY, RUN_TTY, RUN_NORMAL|RUN_REALLY );
594 wrap_merge_is_copy (fileName)
595 const char *fileName;
597 WrapperEntry *e=wrap_matching_entry(fileName);
598 if(e==NULL || e->mergeMethod==WRAP_MERGE)
605 wrap_fromcvs_process_file(fileName)
606 const char *fileName;
609 WrapperEntry *e=wrap_matching_entry(fileName);
611 if(e==NULL || e->fromcvsFilter==NULL)
614 args = xmalloc (strlen (e->fromcvsFilter)
615 + strlen (fileName));
617 wrap_clean_fmt_str(e->fromcvsFilter, 1);
618 sprintf (args, e->fromcvsFilter, fileName);
620 run_exec(RUN_TTY, RUN_TTY, RUN_TTY, RUN_NORMAL );