3 * fmt_addr.c -- format an address field (from fmt_scan)
7 * This code is Copyright (c) 2002, by the authors of nmh. See the
8 * COPYRIGHT file in the root directory of the nmh distribution for
9 * complete copyright information.
13 #include <h/addrsbr.h>
14 #include <h/fmt_scan.h>
16 static char *buf; /* our current working buffer */
17 static char *bufend; /* end of working buffer */
18 static char *last_dst; /* buf ptr at end of last call */
19 static unsigned int bufsiz; /* current size of buf */
21 #define BUFINCR 512 /* how much to expand buf when if fills */
23 #define CPY(s) { cp = (s); while ((*dst++ = *cp++)) ; --dst; }
25 /* check if there's enough room in buf for str. add more mem if needed */
26 #define CHECKMEM(str) \
27 if ((len = strlen (str)) >= bufend - dst) {\
29 int n = last_dst - buf;\
30 bufsiz += ((dst + len - bufend) / BUFINCR + 1) * BUFINCR;\
31 buf = realloc (buf, bufsiz);\
35 adios (NULL, "formataddr: couldn't get buffer space");\
36 bufend = buf + bufsiz;\
40 /* fmt_scan will call this routine if the user includes the function
41 * "(formataddr {component})" in a format string. "orig" is the
42 * original contents of the string register. "str" is the address
43 * string to be formatted and concatenated onto orig. This routine
44 * returns a pointer to the concatenated address string.
46 * We try to not do a lot of malloc/copy/free's (which is why we
47 * don't call "getcpy") but still place no upper limit on the
48 * length of the result string.
50 * This routine is placed in a separate library so it can be
51 * overridden by particular programs (e.g., "replsbr").
55 formataddr (char *orig, char *str)
62 register struct mailname *mp = NULL;
64 /* if we don't have a buffer yet, get one */
66 buf = malloc (BUFINCR);
68 adios (NULL, "formataddr: couldn't allocate buffer space");
69 last_dst = buf; /* XXX */
70 bufsiz = BUFINCR - 6; /* leave some slop */
71 bufend = buf + bufsiz;
74 * If "orig" points to our buffer we can just pick up where we
75 * left off. Otherwise we have to copy orig into our buffer.
79 else if (!orig || !*orig) {
83 dst = last_dst; /* XXX */
88 /* concatenate all the new addresses onto 'buf' */
89 for (isgroup = 0; (cp = getname (str)); ) {
90 if ((mp = getm (cp, NULL, 0, fmt_norm, NULL)) == NULL)
93 if (isgroup && (mp->m_gname || !mp->m_ingrp)) {
97 /* if we get here we're going to add an address */
103 CHECKMEM (mp->m_gname);