1 /* $Id: res.c,v 1.36 2004-06-15 08:05:54 adam Exp $
2 Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
5 This file is part of the Zebra server.
7 Zebra is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with Zebra; see the file LICENSE.zebra. If not, write to the
19 Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
35 #include <yaz/yaz-util.h>
40 struct res_entry *next;
44 struct res_entry *first, *last;
51 static struct res_entry *add_entry (Res r)
53 struct res_entry *resp;
56 resp = r->last = r->first =
57 (struct res_entry *) xmalloc (sizeof(*resp));
60 resp = (struct res_entry *) xmalloc (sizeof(*resp));
68 static char *xstrdup_env(const char *src)
77 if (src[i] == '$' && src[i+1] == '{')
83 while (k < 127 && src[i] && !strchr(":}\n\r\f", src[i]))
84 envname[k++] = src[i++];
87 env_val = getenv(envname);
89 env_strlen += 1 + strlen(env_val);
92 while (src[i] && !strchr("}\n\r\f", src[i]))
100 dst = xmalloc(1 + env_strlen + i);
104 if (src[i] == '$' && src[i+1] == '{')
110 while(k < 127 && src[i] && !strchr(":}\n\r\f", src[i]))
111 envname[k++] = src[i++];
113 env_val = getenv(envname);
116 strcpy(dst+j, env_val);
117 j += strlen(env_val);
119 else if (src[i] == ':' && src[i+1] == '-')
122 while (src[i] && !strchr("}\n\r\f", src[i]))
125 while (src[i] && !strchr("}\n\r\f", src[i]))
137 static void reread (Res r)
139 struct res_entry *resp;
142 int val_size, val_max = 256;
149 val_buf = (char*) xmalloc (val_max);
154 fr = fopen (r->name, "r");
157 logf (LOG_WARN|LOG_ERRNO, "Cannot open `%s'", r->name);
162 line = fgets (fr_buf, sizeof(fr_buf)-1, fr);
169 while (fr_buf[no] && fr_buf[no] != '\n')
173 resp = add_entry (r);
174 resp->name = (char*) xmalloc (no+1);
176 strcpy (resp->name, fr_buf);
183 if (fr_buf[no] == 0 || fr_buf[no] == '\n' )
188 if (strchr (": \t", fr_buf[no]))
195 resp = add_entry (r);
196 resp->name = (char*) xmalloc (no);
197 strcpy (resp->name, fr_buf);
199 while (strchr (" \t", fr_buf[no]))
204 if (fr_buf[no] == '\0' || strchr("\n\r\f", fr_buf[no]))
206 while (val_size > 0 &&
207 (val_buf[val_size-1] == ' ' ||
208 val_buf[val_size-1] == '\t'))
210 val_buf[val_size] = '\0';
211 resp->value = xstrdup_env(val_buf);
212 logf (LOG_DEBUG, "(name=%s,value=%s)",
213 resp->name, resp->value);
216 else if (fr_buf[no] == '\\' && strchr ("\n\r\f", fr_buf[no+1]))
218 line = fgets (fr_buf, sizeof(fr_buf)-1, fr);
221 val_buf[val_size] = '\0';
222 resp->value = xstrdup_env(val_buf);
229 val_buf[val_size++] = fr_buf[no++];
230 if (val_size+1 >= val_max)
234 nb = (char*) xmalloc (val_max+=1024);
235 memcpy (nb, val_buf, val_size);
247 Res res_open (const char *name, Res def_res, Res over_res)
254 if (access (name, 4))
256 if (access (name, R_OK))
259 logf (LOG_WARN|LOG_ERRNO, "Cannot open `%s'", name);
263 r = (Res) xmalloc (sizeof(*r));
265 r->first = r->last = NULL;
267 r->name = xstrdup (name);
270 r->def_res = def_res;
271 r->over_res = over_res;
275 void res_close (Res r)
281 struct res_entry *re, *re1;
282 for (re = r->first; re; re=re1)
296 const char *res_get_prefix (Res r, const char *name, const char *prefix,
304 if (strlen(name) + strlen(prefix) >= (sizeof(rname)-2))
306 strcpy(rname, prefix);
309 v = res_get(r, rname);
312 v = res_get(r, name);
318 const char *res_get (Res r, const char *name)
320 struct res_entry *re;
326 v = res_get(r->over_res, name);
332 for (re = r->first; re; re=re->next)
333 if (re->value && !yaz_matchstr (re->name, name))
336 return res_get (r->def_res, name);
339 const char *res_get_def (Res r, const char *name, const char *def)
343 if (!(t = res_get (r, name)))
345 logf (LOG_DEBUG, "CAUTION: Using default resource %s:%s", name, def);
352 int res_get_match (Res r, const char *name, const char *value, const char *s)
354 const char *cn = res_get (r, name);
358 if (cn && !yaz_matchstr (cn, value))
363 void res_set (Res r, const char *name, const char *value)
365 struct res_entry *re;
370 for (re = r->first; re; re=re->next)
371 if (re->value && !yaz_matchstr (re->name, name))
374 re->value = xstrdup_env (value);
378 re->name = xstrdup (name);
379 re->value = xstrdup_env (value);
382 int res_trav (Res r, const char *prefix, void *p,
383 void (*f)(void *p, const char *name, const char *value))
385 struct res_entry *re;
395 for (re = r->first; re; re=re->next)
397 if (l==0 || !memcmp (re->name, prefix, l))
399 (*f)(p, re->name, re->value);
403 return res_trav (r->def_res, prefix, p, f);
408 int res_write (Res r)
410 struct res_entry *re;
417 return 0; /* ok, this was not from a file */
418 fr = fopen (r->name, "w");
421 logf (LOG_FATAL|LOG_ERRNO, "Cannot create `%s'", r->name);
425 for (re = r->first; re; re=re->next)
428 int lefts = strlen(re->name)+2;
431 fprintf (fr, "%s\n", re->name);
434 fprintf (fr, "%s: ", re->name);
435 while (lefts + strlen(re->value+no) > 78)
438 int ind = no+ 78-lefts;
441 if (re->value[ind] == ' ')
446 ind = no + 78 - lefts;
447 for (i = no; i != ind; i++)
448 putc (re->value[i], fr);
449 fprintf (fr, "\\\n");
453 fprintf (fr, "%s\n", re->value+no);