alias.c

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/* 
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 */

#include "extern.h"

struct ALIAS aliases[MAX_ALIAS];

char alias_tok[MAX_TOKENS][MAX_TOKENS];
char aliastbuf[4096];

int alias_get_tok(edit)
char *edit;
{
  int c = 0;
  char *token;

  bzero((char *)&alias_tok, sizeof(alias_tok));

  token = strtok(edit, "\n\t\r\n ");
  while(token != (char *)NULL)
  {
    sprintf(alias_tok[c++], "%s", token);
    token = strtok((char *)NULL, "\n\t\r\n ");
  }

  return(c);
}


int doAlias()
{
  int i, j, ndx, first = 1;
  char buf[512], tbuf[256];

  if(verboseLevel & VERBOSE_ALIAS)
  {
    st_report("Alias(): ntokens = %d", args->ntokens);
  }

  if(isSet(PF_L_FLAG)) /* Show listing */
  {
    j = 0;
    for(i=0;i<MAX_ALIAS;i++)
    {
      if(aliases[i].used)
      {
        if(first)
        {
          st_print(" Alias      :  Substitute\n\n");
          first = 0;
        }

        st_print("%-12.12s:  %s\n", aliases[i].keyword, aliases[i].alias);

        j++;
      }
    }

    st_report("%d aliases defines out of %d", j, MAX_ALIAS);

    return(0);
  }

  if(args->ntokens > 2)
  {
    bzero(tbuf, sizeof(tbuf));

    for(i=0;i<MAX_ALIAS;i++) /* Find an empty alias slot */
    {
      if(!aliases[i].used)
      {
        ndx = i;
        break;
      }
    }

    if(i == MAX_ALIAS)
    {
      st_fail("Too many aliases defined");
      return(1);
    }
    
    strcpy(aliases[ndx].keyword, args->secondArg);

    for(i=2;i<args->ntokens;i++)
    {

      if(strstr(args->tok[i], "\\/")) /* Look for excaped flags in alias; need to gig it \\ to stop compiler warns */
      {
        sprintf(buf, "%s ", args->tok[i]+1);
      }
      else
      {
        sprintf(buf, "%s ", args->tok[i]);
      }

      strcat(tbuf, buf);
    }

    strcpy(aliases[ndx].alias, tbuf);
    aliases[ndx].used = 1;
  }
  else
  {
    printH_FlagHelp("alias");
    return(1);
  }

  return(0);
}


int doUnalias()
{
  int i;

  if(args->ntokens > 1)
  {
    for(i=0;i<MAX_ALIAS;i++)
    {
      if(aliases[i].used)
      {
        if(!strcmp(args->secondArg, aliases[i].keyword))
        {
          st_report("Alias(): Zapping alias %s", args->secondArg);

          aliases[i].used = 0;
          aliases[i].keyword[0] = '\0';
          aliases[i].alias[0] = '\0';
        }
      }
    }
  }

  return(0);
}


struct ALIAS *isAlias(buf)
char *buf;
{
  int i;

  for(i=0;i<MAX_ALIAS;i++)
  {
    if(aliases[i].used)
    {
      if(!strcmp(aliases[i].keyword, buf))
      {
        return(&aliases[i]);
      }
    }
  }

  return((struct ALIAS *)0);
}


int substituteAliases(buf)
char *buf;
{
  int i, n;
  char tbuf[512];
  struct ALIAS *a;

  if(verboseLevel & VERBOSE_ALIAS)
  {
    st_report("Alias(): Starting command: %s", buf);
  }

  strcpy(aliastbuf, buf); /* Make a local copy */

  n = alias_get_tok(aliastbuf);

  if(!n)
  {
    if(verboseLevel & VERBOSE_ALIAS)
    {
      st_report("Alias(): No args");
    }
    return(1);
  }

  /* substitute aliases here */
  for(i=0;i<n;i++)
  {
    if((a = isAlias(alias_tok[i])))
    {
      strcpy(alias_tok[i], a->alias);
    }
    else
    {
      if(verboseLevel & VERBOSE_ALIAS)
      {
        st_report("Alias(): Skipping %s", alias_tok[i]);
      }
    }
  }

  /* reconsitute original buffer here */
  buf[0] = '\0';

  for(i=0;i<n;i++)
  {
    sprintf(tbuf, "%s ", alias_tok[i]);

    strcat(buf, tbuf);
  }

  strcmprs(buf);

  if(verboseLevel & VERBOSE_ALIAS)
  {
    st_report("Alias(): Final command: %s", buf);
  }

  return(0);
}