1 /* $Id: res.c,v 1.41 2005-04-15 10:47:49 adam Exp $
2 Copyright (C) 1995-2005
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
33 #include <yaz/yaz-util.h>
34 #include <idzebra/res.h>
39 struct res_entry *next;
43 struct res_entry *first, *last;
50 static struct res_entry *add_entry (Res r)
52 struct res_entry *resp;
55 resp = r->last = r->first =
56 (struct res_entry *) xmalloc (sizeof(*resp));
59 resp = (struct res_entry *) xmalloc (sizeof(*resp));
67 static char *xstrdup_env(const char *src)
76 if (src[i] == '$' && src[i+1] == '{')
82 while (k < 127 && src[i] && !strchr(":}\n\r\f", src[i]))
83 envname[k++] = src[i++];
86 env_val = getenv(envname);
88 env_strlen += 1 + strlen(env_val);
91 while (src[i] && !strchr("}\n\r\f", src[i]))
99 dst = xmalloc(1 + env_strlen + i);
103 if (src[i] == '$' && src[i+1] == '{')
109 while(k < 127 && src[i] && !strchr(":}\n\r\f", src[i]))
110 envname[k++] = src[i++];
112 env_val = getenv(envname);
115 strcpy(dst+j, env_val);
116 j += strlen(env_val);
118 else if (src[i] == ':' && src[i+1] == '-')
121 while (src[i] && !strchr("}\n\r\f", src[i]))
124 while (src[i] && !strchr("}\n\r\f", src[i]))
136 static void reread (Res r)
138 struct res_entry *resp;
141 int val_size, val_max = 256;
151 fr = fopen (r->name, "r");
154 yaz_log (YLOG_WARN|YLOG_ERRNO, "Cannot open `%s'", r->name);
157 val_buf = (char*) xmalloc (val_max);
160 line = fgets (fr_buf, sizeof(fr_buf)-1, fr);
167 while (fr_buf[no] && fr_buf[no] != '\n')
171 resp = add_entry (r);
172 resp->name = (char*) xmalloc (no+1);
174 strcpy (resp->name, fr_buf);
181 if (fr_buf[no] == 0 || fr_buf[no] == '\n' )
186 if (strchr (": \t", fr_buf[no]))
193 resp = add_entry (r);
194 resp->name = (char*) xmalloc (no);
195 strcpy (resp->name, fr_buf);
197 while (strchr (" \t", fr_buf[no]))
202 if (fr_buf[no] == '\0' || strchr("\n\r\f", fr_buf[no]))
204 while (val_size > 0 &&
205 (val_buf[val_size-1] == ' ' ||
206 val_buf[val_size-1] == '\t'))
208 val_buf[val_size] = '\0';
209 resp->value = xstrdup_env(val_buf);
210 yaz_log (YLOG_DEBUG, "(name=%s,value=%s)",
211 resp->name, resp->value);
214 else if (fr_buf[no] == '\\' && strchr ("\n\r\f", fr_buf[no+1]))
216 line = fgets (fr_buf, sizeof(fr_buf)-1, fr);
219 val_buf[val_size] = '\0';
220 resp->value = xstrdup_env(val_buf);
227 val_buf[val_size++] = fr_buf[no++];
228 if (val_size+1 >= val_max)
232 nb = (char*) xmalloc (val_max+=1024);
233 memcpy (nb, val_buf, val_size);
245 Res res_open (const char *name, Res def_res, Res over_res)
252 if (access (name, 4))
254 if (access (name, R_OK))
257 yaz_log (YLOG_WARN|YLOG_ERRNO, "Cannot open `%s'", name);
261 r = (Res) xmalloc (sizeof(*r));
263 r->first = r->last = NULL;
265 r->name = xstrdup (name);
268 r->def_res = def_res;
269 r->over_res = over_res;
273 void res_close (Res r)
279 struct res_entry *re, *re1;
280 for (re = r->first; re; re=re1)
294 const char *res_get_prefix (Res r, const char *name, const char *prefix,
302 if (strlen(name) + strlen(prefix) >= (sizeof(rname)-2))
304 strcpy(rname, prefix);
307 v = res_get(r, rname);
310 v = res_get(r, name);
316 const char *res_get (Res r, const char *name)
318 struct res_entry *re;
324 v = res_get(r->over_res, name);
330 for (re = r->first; re; re=re->next)
331 if (re->value && !yaz_matchstr (re->name, name))
334 return res_get (r->def_res, name);
337 const char *res_get_def (Res r, const char *name, const char *def)
341 if (!(t = res_get (r, name)))
343 yaz_log (YLOG_DEBUG, "CAUTION: Using default resource %s:%s", name, def);
350 int res_get_match (Res r, const char *name, const char *value, const char *s)
352 const char *cn = res_get (r, name);
356 if (cn && !yaz_matchstr (cn, value))
361 void res_set (Res r, const char *name, const char *value)
363 struct res_entry *re;
368 for (re = r->first; re; re=re->next)
369 if (re->value && !yaz_matchstr (re->name, name))
372 re->value = xstrdup_env (value);
376 re->name = xstrdup (name);
377 re->value = xstrdup_env (value);
380 int res_trav (Res r, const char *prefix, void *p,
381 void (*f)(void *p, const char *name, const char *value))
383 struct res_entry *re;
393 for (re = r->first; re; re=re->next)
395 if (l==0 || !memcmp (re->name, prefix, l))
397 (*f)(p, re->name, re->value);
401 return res_trav (r->def_res, prefix, p, f);
406 int res_write (Res r)
408 struct res_entry *re;
415 return 0; /* ok, this was not from a file */
416 fr = fopen (r->name, "w");
419 yaz_log (YLOG_FATAL|YLOG_ERRNO, "Cannot create `%s'", r->name);
423 for (re = r->first; re; re=re->next)
426 int lefts = strlen(re->name)+2;
429 fprintf (fr, "%s\n", re->name);
432 fprintf (fr, "%s: ", re->name);
433 while (lefts + strlen(re->value+no) > 78)
436 int ind = no+ 78-lefts;
439 if (re->value[ind] == ' ')
444 ind = no + 78 - lefts;
445 for (i = no; i != ind; i++)
446 putc (re->value[i], fr);
447 fprintf (fr, "\\\n");
451 fprintf (fr, "%s\n", re->value+no);