src/gmxlib/symtab.c

   1 /*
   2  *
   3  *                This source code is part of
   4  *
   5  *                 G   R   O   M   A   C   S
   6  *
   7  *          GROningen MAchine for Chemical Simulations
   8  *
   9  *                        VERSION 3.2.0
  10  * Written by David van der Spoel, Erik Lindahl, Berk Hess, and others.
  11  * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
  12  * Copyright (c) 2001-2004, The GROMACS development team,
  13  * check out http://www.gromacs.org for more information.
  14
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * If you want to redistribute modifications, please consider that
  21  * scientific software is very special. Version control is crucial -
  22  * bugs must be traceable. We will be happy to consider code for
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  26  *
  27  * To help us fund GROMACS development, we humbly ask that you cite
  28  * the papers on the package - you can find them in the top README file.
  29  *
  30  * For more info, check our website at http://www.gromacs.org
  31  *
  32  * And Hey:
  33  * GROningen Mixture of Alchemy and Childrens' Stories
  34  */
  35 #ifdef HAVE_CONFIG_H
  36 #include <config.h>
  37 #endif
  38
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include "sysstuff.h"
  42 #include "string2.h"
  43 #include "typedefs.h"
  44 #include "gmx_fatal.h"
  45 #include "smalloc.h"
  46 #include "txtdump.h"
  47 #include "symtab.h"
  48 #include "macros.h"
  49
  50 #define BUFSIZE                 1024
  51 #define TABLESIZE               5
  52
  53 static char *trim_string(const char *s,char *out, int maxlen)
  54      /*
  55       * Returns a pointer to a static area which contains a copy
  56       * of s without leading or trailing spaces. Strings are
  57       * truncated to BUFSIZE positions.
  58       */
  59 {
  60   int len,i;
  61
  62   if(strlen(s)>(size_t)(maxlen-1))
  63     gmx_fatal(FARGS,"Character buffer size too small\n");
  64
  65   for (; (*s)&&((*s)==' '); s++);
  66   for (len=strlen(s); (len>0); len--) if (s[len-1]!=' ') break;
  67   if (len>=BUFSIZE) len=BUFSIZE-1;
  68   for (i=0; i<len; i++) out[i]=*(s++);
  69   out[i]=0;
  70   return out;
  71 }
  72
  73 int lookup_symtab(t_symtab *symtab,char **name)
  74 {
  75   int base,index;
  76   t_symbuf *symbuf;
  77
  78   base=0;
  79   index=0;
  80   symbuf=symtab->symbuf;
  81   while (symbuf!=NULL) {
  82     index=name-symbuf->buf;
  83     if ( ( index >= 0 ) && ( index < symbuf->bufsize ) )
  84       return index+base;
  85     else {
  86       base+=symbuf->bufsize;
  87       symbuf=symbuf->next;
  88     }
  89   }
  90   gmx_fatal(FARGS,"symtab lookup \"%s\" not found",*name);
  91   return -1;
  92 }
  93
  94 char **get_symtab_handle(t_symtab *symtab,int name)
  95 {
  96   t_symbuf *symbuf;
  97
  98   symbuf=symtab->symbuf;
  99   while (symbuf!=NULL) {
 100     if (name<symbuf->bufsize)
 101       return &(symbuf->buf[name]);
 102     else {
 103       name-=symbuf->bufsize;
 104       symbuf=symbuf->next;
 105     }
 106   }
 107   gmx_fatal(FARGS,"symtab get_symtab_handle %d not found",name);
 108   return NULL;
 109 }
 110
 111 static t_symbuf *new_symbuf(void)
 112 {
 113   t_symbuf *symbuf;
 114
 115   snew(symbuf,1);
 116   symbuf->bufsize=TABLESIZE;
 117   snew(symbuf->buf,symbuf->bufsize);
 118   symbuf->next=NULL;
 119
 120   return symbuf;
 121 }
 122
 123 static char **enter_buf(t_symtab *symtab,char *name)
 124 {
 125   int      i;
 126   t_symbuf *symbuf;
 127   gmx_bool     bCont;
 128
 129   if (symtab->symbuf == NULL)
 130     symtab->symbuf=new_symbuf();
 131
 132   symbuf=symtab->symbuf;
 133   do {
 134     for(i=0; (i < symbuf->bufsize); i++) {
 135       if (symbuf->buf[i]==NULL) {
 136         symtab->nr++;
 137         symbuf->buf[i]=strdup(name);
 138         return &(symbuf->buf[i]);
 139       } else if (strcmp(symbuf->buf[i],name)==0)
 140         return &(symbuf->buf[i]);
 141     }
 142     if (symbuf->next != NULL) {
 143       symbuf=symbuf->next;
 144       bCont = TRUE;
 145     }
 146     else
 147       bCont = FALSE;
 148   } while (bCont);
 149
 150   symbuf->next=new_symbuf();
 151   symbuf=symbuf->next;
 152
 153   symtab->nr++;
 154   symbuf->buf[0]=strdup(name);
 155   return &(symbuf->buf[0]);
 156 }
 157
 158 char **put_symtab(t_symtab *symtab,const char *name)
 159 {
 160   char buf[256];
 161
 162   return enter_buf(symtab,trim_string(name,buf,255));
 163 }
 164
 165 void open_symtab(t_symtab *symtab)
 166 {
 167   symtab->nr=0;
 168   symtab->symbuf=NULL;
 169 }
 170
 171 void close_symtab(t_symtab *symtab)
 172 {
 173 }
 174
 175 void done_symtab(t_symtab *symtab)
 176 {
 177   int i;
 178   t_symbuf *symbuf,*freeptr;
 179
 180   close_symtab(symtab);
 181   symbuf=symtab->symbuf;
 182   while (symbuf!=NULL) {
 183     for (i=0; (i < symbuf->bufsize) && (i < symtab->nr); i++)
 184       sfree(symbuf->buf[i]);
 185     symtab->nr-=i;
 186     sfree(symbuf->buf);
 187     freeptr=symbuf;
 188     symbuf=symbuf->next;
 189     sfree(freeptr);
 190   }
 191   symtab->symbuf=NULL;
 192   if (symtab->nr != 0)
 193     gmx_incons("Freeing symbol table (symtab) structure");
 194 }
 195
 196 void free_symtab(t_symtab *symtab)
 197 {
 198   t_symbuf *symbuf,*freeptr;
 199
 200   close_symtab(symtab);
 201   symbuf=symtab->symbuf;
 202   while (symbuf!=NULL) {
 203     symtab->nr-=min(symbuf->bufsize,symtab->nr);
 204     freeptr=symbuf;
 205     symbuf=symbuf->next;
 206     sfree(freeptr);
 207   }
 208   symtab->symbuf=NULL;
 209   if (symtab->nr != 0)
 210     gmx_incons("Freeing symbol table (symtab) structure");
 211 }
 212
 213 void pr_symtab(FILE *fp,int indent,const char *title,t_symtab *symtab)
 214 {
 215   int i,j,nr;
 216   t_symbuf *symbuf;
 217
 218   if (available(fp,symtab,indent,title))
 219     {
 220       indent=pr_title_n(fp,indent,title,symtab->nr);
 221       i=0;
 222       nr=symtab->nr;
 223       symbuf=symtab->symbuf;
 224       while (symbuf!=NULL)
 225         {
 226           for (j=0; (j < symbuf->bufsize) && (j < nr); j++)
 227             {
 228               pr_indent(fp,indent);
 229               (void) fprintf(fp,"%s[%d]=\"%s\"\n",title,i++,symbuf->buf[j]);
 230             }
 231           nr-=j;
 232           symbuf=symbuf->next;
 233         }
 234       if (nr != 0)
 235         gmx_incons("Printing symbol table (symtab) structure");
 236     }
 237 }