2 * Copyright (c) 1993 david d zuhn
4 * Written by david d `zoo' zuhn while at Cygnus Support
6 * You may distribute under the terms of the GNU General Public License as
7 * specified in the README file that comes with the CVS source distribution.
15 /* this file is to be found in the user's home directory */
17 #ifndef CVSRC_FILENAME
18 #define CVSRC_FILENAME ".cvsrc"
20 char cvsrc[] = CVSRC_FILENAME;
24 /* Read cvsrc, processing options matching CMDNAME ("cvs" for global
25 options, and update *ARGC and *ARGV accordingly. */
28 read_cvsrc (int *argc, char ***argv, const char *cmdname)
36 size_t line_chars_allocated;
49 /* old_argc and old_argv hold the values returned from the
50 previous invocation of read_cvsrc and are used to free the
51 allocated memory. The first invocation of read_cvsrc gets argv
52 from the system, this memory must not be free'd. */
53 static int old_argc = 0;
54 static char **old_argv = NULL;
56 /* don't do anything if argc is -1, since that implies "help" mode */
60 /* determine filename for ~/.cvsrc */
62 homedir = get_homedir ();
63 /* If we can't find a home directory, ignore ~/.cvsrc. This may
64 make tracking down problems a bit of a pain, but on the other
65 hand it might be obnoxious to complain when CVS will function
66 just fine without .cvsrc (and many users won't even know what
71 homeinit = strcat_filename_onto_homedir (homedir, cvsrc);
73 /* if it can't be read, there's no point to continuing */
75 if (!isreadable (homeinit))
81 /* now scan the file until we find the line for the command in question */
84 line_chars_allocated = 0;
85 command_len = strlen (cmdname);
86 cvsrcfile = open_file (homeinit, "r");
87 while ((line_length = getline (&line, &line_chars_allocated, cvsrcfile))
90 /* skip over comment lines */
94 /* stop if we match the current command */
95 if (!strncmp (line, cmdname, command_len)
96 && isspace ((unsigned char) *(line + command_len)))
103 if (line_length < 0 && !feof (cvsrcfile))
104 error (0, errno, "cannot read %s", homeinit);
108 /* setup the new options list */
111 max_new_argv = (*argc) + GROW;
112 new_argv = (char **) xmalloc (max_new_argv * sizeof (char*));
113 new_argv[0] = xstrdup ((*argv)[0]);
117 /* skip over command in the options line */
118 for (optstart = strtok (line + command_len, "\t \n");
120 optstart = strtok (NULL, "\t \n"))
122 new_argv [new_argc++] = xstrdup (optstart);
124 if (new_argc >= max_new_argv)
126 max_new_argv += GROW;
127 new_argv = (char **) xrealloc (new_argv, max_new_argv * sizeof (char*));
135 /* now copy the remaining arguments */
137 if (new_argc + *argc > max_new_argv)
139 max_new_argv = new_argc + *argc;
140 new_argv = (char **) xrealloc (new_argv, max_new_argv * sizeof (char*));
142 for (i=1; i < *argc; i++)
144 new_argv [new_argc++] = xstrdup ((*argv)[i]);
147 if (old_argv != NULL)
149 /* Free the memory which was allocated in the previous
151 free_names (&old_argc, old_argv);
154 old_argc = *argc = new_argc;
155 old_argv = *argv = new_argv;