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- /* $Id: ngsrch.c,v 4.4.3.1 1992/02/01 03:09:32 sob PATCH_3 sob $
- *
- * $Log: ngsrch.c,v $
- * Revision 4.4.3.1 1992/02/01 03:09:32 sob
- * Release 4.4 Patchlevel 3
- *
- * Revision 4.4 1991/09/09 20:23:31 sob
- * release 4.4
- *
- *
- *
- */
- /* This software is Copyright 1991 by Stan Barber.
- *
- * Permission is hereby granted to copy, reproduce, redistribute or otherwise
- * use this software as long as: there is no monetary profit gained
- * specifically from the use or reproduction of this software, it is not
- * sold, rented, traded or otherwise marketed, and this copyright notice is
- * included prominently in any copy made.
- *
- * The author make no claims as to the fitness or correctness of this software
- * for any use whatsoever, and it is provided as is. Any use of this software
- * is at the user's own risk.
- */
-
- #include "EXTERN.h"
- #include "common.h"
- #include "rcstuff.h"
- #include "final.h"
- #include "search.h"
- #include "rn.h"
- #include "util.h"
- #include "term.h"
- #include "rcln.h"
- #include "INTERN.h"
- #include "ngsrch.h"
-
- #ifdef NGSORONLY
- COMPEX ngcompex;
- #endif
-
- void
- ngsrch_init()
- {
- #ifdef ZEROGLOB
- init_compex(&ngcompex);
- #endif /* ZEROGLOB */
- ;
- }
-
- #ifdef NGSEARCH
- int
- ng_search(patbuf,get_cmd)
- char *patbuf; /* if patbuf != buf, get_cmd must */
- int get_cmd; /* be set to FALSE!!! */
- {
- char *pattern; /* unparsed pattern */
- register char cmdchr = *patbuf; /* what kind of search? */
- register char *s;
- bool backward = cmdchr == '?'; /* direction of search */
-
- int_count = 0;
- if (get_cmd && buf == patbuf)
- if (!finish_command(FALSE)) /* get rest of command */
- return NGS_ABORT;
- for (pattern = patbuf+1; *pattern == ' '; pattern++) ;
- if (*pattern) {
- ng_doread = FALSE;
- }
- s = rindex(pattern,cmdchr);
- if (s != Nullch && *(s-1) != '\\') {
- *s++ = '\0';
- if (index(s,'r') != Nullch)
- ng_doread = TRUE;
- }
- if ((s = ng_comp(&ngcompex,pattern,TRUE,TRUE)) != Nullch) {
- /* compile regular expression */
- printf("\n%s\n",s) ; FLUSH;
- return NGS_ERROR;
- }
- fputs("\nSearching...",stdout) ; FLUSH; /* give them something to read */
- fflush(stdout);
- for (;;) {
- if (int_count) {
- int_count = 0;
- return NGS_INTR;
- }
- if (backward) {
- if (ng > 0)
- --ng;
- else
- ng = nextrcline;
- }
- else {
- if (ng >= nextrcline)
- ng = 0;
- else
- ++ng;
- }
- if (ng == current_ng)
- return NGS_NOTFOUND;
- if (ng == nextrcline || toread[ng] < TR_NONE || !ng_wanted())
- continue;
- if (toread[ng] == TR_NONE)
- set_toread(ng);
-
- if (toread[ng] > TR_NONE)
- return NGS_FOUND;
- else if (toread[ng] == TR_NONE)
- if (ng_doread)
- return NGS_FOUND;
- else
- printf("\n[0 unread in %s--skipping]",rcline[ng]) ; FLUSH;
- }
- }
-
- bool
- ng_wanted()
- {
- return execute(&ngcompex,rcline[ng]) != Nullch;
- }
- #endif
-
- #ifdef NGSORONLY
- char *
- ng_comp(compex,pattern,RE,fold)
- COMPEX *compex;
- char *pattern;
- bool_int RE;
- bool_int fold;
- {
- char ng_pattern[128];
- register char *s = pattern, *d = ng_pattern;
-
- if (!*s) {
- if(compex->expbuf)
- return Nullch; /* reuse old pattern */
- else
- return "No previous search pattern";
- }
- for (; *s; s++) {
- if (*s == '.') {
- *d++ = '\\';
- *d++ = *s;
- }
- else if (*s == '?') {
- *d++ = '.';
- }
- else if (*s == '*') {
- *d++ = '.';
- *d++ = *s;
- }
- else if (strnEQ(s,"all",3)) {
- *d++ = '.';
- *d++ = '*';
- s += 2;
- }
- else
- *d++ = *s;
- }
- *d = '\0';
- return compile(compex,ng_pattern,RE,fold);
- }
- #endif
-
-