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/* Distributed Checksum Clearinghouse
*
* Copyright (c) 2005 by Rhyolite Software
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND RHYOLITE SOFTWARE DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL RHYOLITE SOFTWARE
* BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*
* Rhyolite Software DCC 1.2.74-1.16 $Revision$
*/
#include "dcc_defs.h"
/* Get a "word", while honoring backslashes
* on exit the remainder of the line is trimmed of leading whitespace */
const char * /* 0 or remainder of line */
dcc_parse_word(DCC_EMSG emsg,
char *tgt, /* copy word to here if not null */
int tgt_len, /* includes trailing '\0' */
const char *line, /* line of words */
const char *fieldname,
const char *fnm, int lineno)
{
const char *p;
char c;
if (!tgt_len && tgt)
dcc_logbad(EX_SOFTWARE, "bad tgt_len for dcc_get_word(%s)%s",
fieldname, fnm_lineno(fnm, lineno));
if (!line) {
if (tgt)
*tgt = '\0';
if (fieldname)
dcc_pemsg(EX_USAGE, emsg, "%s missing%s",
fieldname, fnm_lineno(fnm, lineno));
return 0;
}
line = line+strspn(line, DCC_WHITESPACE); /* skip leading blanks */
p = line;
do {
c = *p;
if (c != '\0') {
++p;
if (c == '\\' && *p != '\0') {
/* recognize and convert escape sequences to
* their real equivalents */
if ((c = *p++) == 'n') {
c = '\n';
} else if (c == 'r') {
c = '\r';
} else if (c == 't') {
c = '\t';
} else if (c == 'b') {
c = '\b';
} else if (c >= '0' && c <= '7') {
c -= '0';
if (*p >= '0' && *p <= '7') {
c = (c<<3)+(*p++ - '0');
if (*p >= '0' && *p <= '7')
c = (c<<3)+(*p++ - '0');
}
}
} else if (strchr(DCC_WHITESPACE, c)) {
/* Stop on the first whitespace or delimiter */
c = '\0';
/* Skip trailing whitespace */
p += strspn(p, DCC_WHITESPACE);
}
}
if (tgt) {
if (!tgt_len) {
if (fieldname)
dcc_pemsg(EX_USAGE, emsg,
"%s \"%.*s...\" too long%s",
fieldname,
min(16, (int)(p-line)), line,
fnm_lineno(fnm, lineno));
return 0;
}
*tgt++ = c;
--tgt_len;
}
} while (c != '\0');
return p;
}
/* see if a string starts with a word possibly followed by a comma */
u_char /* 1=yes */
dcc_ck_word_comma(char **parg, const char *word)
{
u_int word_len = strlen(word);
char *arg = *parg;
if (strncasecmp(arg, word, word_len))
return 0;
arg += word_len;
if (*arg == '\0') {
*parg = arg;
return 1;
}
if (*arg == ',') {
*parg = arg+1;
return 1;
}
return 0;
}
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