4.3BSD - /usr/src/new/notes/src/expand.c

   1: #include "parms.h"
   2: #include "structs.h"
   3: #include <ctype.h>
   4: #include <signal.h>
   5: 
   6: #ifdef  RCSIDENT
   7: static char *rcsident = "$Header: expand.c,v 1.7 85/01/18 15:40:08 notes Rel $";
   8: #endif
   9: 
  10: /*
  11:  *	Routines to expand notesgroups specifications
  12:  *
  13:  *	Rick L Spickelmier, UC Berkeley
  14:  *	Lou Salkind, NYU
  15:  */
  16: 
  17: #define     MAXGROUP    400         /* lots of them */
  18: 
  19: 
  20: static int  seqtyp = NOSEQ;             /* sequencer mode */
  21: static int  last_group = 0;             /* active in list */
  22: static int  this_group = 0;             /* next one to show */
  23: static struct nflist_f  groups[MAXGROUP];       /* and the groups */
  24: 
  25: /*
  26:  * set the sequencer type (external interface)
  27:  */
  28: 
  29: setseq (i)
  30: {
  31:     seqtyp = i;
  32: }
  33: 
  34: /*
  35:  * add a notesfile to the active list
  36:  */
  37: 
  38: addgrp (string)
  39: char   *string;
  40: {
  41:     int     i;
  42: 
  43:     /* see if it already exists */
  44:     for (i = 0; i < last_group; i++)
  45:     {
  46:     if (strcmp (groups[i].nf_name, string) == 0)
  47:     {                       /* already in table */
  48:         groups[i].nf_active = TRUE;         /* deleted earlier? */
  49:         groups[i].nf_seqmode = seqtyp;
  50:         return;
  51:     }
  52:     }
  53:     if (last_group >= MAXGROUP)
  54:     {
  55:     printf ("addgrp: array overflow, ignoring %s\n", string);
  56:     return;
  57:     }
  58:     groups[last_group].nf_active = TRUE;
  59:     groups[last_group].nf_seqmode = seqtyp;
  60:     groups[last_group++].nf_name = strsave (string);
  61: }
  62: 
  63: /*
  64:  * delete the notesfile from the active list
  65:  */
  66: 
  67: delgroup (string)
  68: char   *string;
  69: {
  70:     register int    i;                  /* might as well be fast */
  71: 
  72:     for (i = 0; i < last_group; i++)
  73:     {
  74:     if (strcmp (groups[i].nf_name, string) == 0)
  75:     {
  76:         groups[i].nf_active = FALSE;
  77:         return;
  78:     }
  79:     }
  80: }
  81: 
  82: /*
  83:  * given a command line argument, expand it into
  84:  * the appropriate sequence command or notesfile
  85:  * specification
  86:  */
  87: 
  88: expand (argp)
  89: char   *argp;
  90: {
  91:     char   *endp;
  92: 
  93:     while (1)                       /* do entire string */
  94:     {
  95:     while (isspace (*argp))             /* skip trash chars */
  96:         argp++;
  97:     if (*argp == '\0')              /* fell off end */
  98:         return;
  99:     endp = argp;
 100:     while (*endp)
 101:     {
 102:         if (isspace (*endp) || *endp == ',')
 103:         {
 104:         *endp++ = '\0';
 105:         break;
 106:         }
 107:         endp++;                 /* now points at next (or NULL) */
 108:     }
 109: 
 110:     switch (argp[0])                /* on first character */
 111:     {
 112: /*
 113:  *	Parse options that make sense at this point.
 114:  */
 115:         case '-':                   /* options */
 116:         {
 117:             switch (argp[1])
 118:             {
 119:             case 's':           /* -S-equencer */
 120:                 seqtyp = NORMSEQ;
 121:                 break;
 122:             case 'x':           /* e-X-tended sequencer */
 123:                 seqtyp = EXTSEQ;
 124:                 break;
 125:             case 'i':           /* indexing sequencer */
 126:                 seqtyp = INDXSEQ;
 127:                 break;
 128:             case 'n':           /* -N-o sequencer */
 129:                 seqtyp = NOSEQ;
 130:                 break;
 131: 
 132:             default:
 133:                 break;          /* ignore it */
 134:             }
 135:             break;
 136:         }
 137: 
 138: /*
 139:  *	specified a file  the hard way (via colon).  This usually
 140:  *	happens in the NFSEQ definition
 141:  */
 142: 
 143:         case ':':                   /* include a file */
 144:         readrc (&argp[1]);          /* do it */
 145:         break;
 146: 
 147: /*
 148:  *	Eliminate notesfles.  If the arg is "! pattern", we remove the
 149:  *	notesfiles that "pattern" matches from the list of notesfiles
 150:  *	to read.
 151:  *
 152:  */
 153:         case '!':                   /* eliminate notesfiles */
 154:         {
 155:             if (patcheck (&argp[1]))        /* wildcard */
 156:             dopat (&argp[1], delgroup);
 157:             else
 158:             delgroup (&argp[1]);
 159:             break;
 160:         }
 161: /*
 162:  *	Anything else is just a "pattern" and specifies some notesfiles
 163:  *	to be added to the list.
 164:  */
 165:         default:                    /* add notesfiles */
 166:         {
 167:             if (patcheck (argp))        /* wildcard check */
 168:             dopat (argp, addgrp);
 169:             else
 170:             addgrp (argp);
 171:             break;
 172:         }
 173:     }
 174:     argp = endp;
 175:     }
 176:                             /* NOT REACHED */
 177: }
 178: 
 179: /*
 180:  * read a file which contains the command line arguments
 181:  */
 182: 
 183: readrc (s)
 184: char   *s;
 185: {
 186:     FILE * f;
 187:     char    buf[BUFSIZ];
 188: 
 189:     if ((f = fopen (s, "r")) == NULL)
 190:     {
 191:     fprintf (stderr, "%s: unable to read file ", Invokedas);
 192:     perror (s);                 /* and the error */
 193:     return (-1);
 194:     }
 195:     while (fgets (buf, sizeof buf - 1, f))
 196:     expand (buf);
 197:     fclose (f);
 198:     return (0);
 199: }
 200: 
 201: /*
 202:  *	return the next active notesfile in the list
 203:  */
 204: 
 205: struct nflist_f *nextgroup ()
 206: {
 207:     while           (this_group < last_group)
 208:     {
 209:     if              (groups[this_group].nf_active)
 210:                         return (&groups[this_group++]);/* give it */
 211:     else
 212:         this_group++;               /* try another */
 213:     }
 214:     return ((struct nflist_f *) NULL);          /* no more */
 215: }

Defined functions

Defined variables

Defined macros