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/* chew
   Copyright (C) 1990-1992 Free Software Foundation, Inc.
   Contributed by steve chamberlain @cygnus
 
 
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
/*
 Yet another way of extracting documentation from source.
 No, I haven't finished it yet, but I hope you people like it better
 that the old way
 
 sac
 
Basically, this is a sort of string forth, maybe we should call it
struth?
 
You define new words thus:
: <newword> <oldwords> ;
There is  no
 
*/
 
 
 
#include "ansidecl.h"
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
 
#define DEF_SIZE 5000
#define STACK 50
#define MIN_CMDLEN      4       /* Minimum length of a command */
 
int internal_wanted;
int internal_mode;
int Verbose=0;
 
 
 
/* Here is a string type ... */
 
typedef struct buffer
{
    char *ptr;
    unsigned int write_idx;
    unsigned int size;
} string_type;
 
 
 
 
 
 
 
static void DEFUN(init_string_with_size,(buffer, size),
           string_type *buffer AND
           unsigned int size )
{
  buffer->write_idx = 0;
  buffer->size = size;
  buffer->ptr = malloc(size);
}
 
static void DEFUN(init_string,(buffer),
           string_type *buffer)
{
    init_string_with_size(buffer, DEF_SIZE);
 
}
 
static int DEFUN(find, (str, what),
          string_type *str AND
          char *what)
{
    unsigned int i;
    char *p;
    p = what;
    for (i = 0; i < str->write_idx && *p; i++)
    {
        if (*p == str->ptr[i])
         p++;
        else
         p = what;
    }
    return (*p == 0);
 
}
 
static void DEFUN(write_buffer,(buffer),
           string_type *buffer)
{
    fwrite(buffer->ptr, buffer->write_idx, 1, stdout);
}
 
 
static void DEFUN(delete_string,(buffer),
           string_type *buffer)
{
    free(buffer->ptr);
}
 
 
static char *DEFUN(addr, (buffer, idx),
            string_type *buffer AND
            unsigned int idx)
{
    return buffer->ptr + idx;
}
 
static char DEFUN(at,(buffer, pos),
           string_type *buffer AND
           unsigned int pos)
{
    if ( pos >= buffer->write_idx)
    {
        return 0;
    }
    return buffer->ptr[pos];
}
 
static void DEFUN(catchar,(buffer, ch),
           string_type *buffer AND
           char ch)
{
  if (buffer->write_idx == buffer->size)
  {
    buffer->size *=2;
    buffer->ptr = realloc(buffer->ptr, buffer->size);
  }
 
  buffer->ptr[buffer->write_idx ++ ] = ch;
}
 
 
static void DEFUN(overwrite_string,(dst,   src),
           string_type *dst AND
           string_type *src)
{
    free(dst->ptr);
    dst->size = src->size;
    dst->write_idx = src->write_idx;
    dst->ptr = src->ptr;
}
 
static void DEFUN(catstr,(dst, src),
           string_type *dst AND
           string_type *src)
{
    unsigned int i;
    for (i = 0; i < src->write_idx; i++)
    {
        catchar(dst, src->ptr[i]);
    }
}
 
 
static void DEFUN(cattext,(buffer, string),
           string_type *buffer AND
           char *string)
{
 
    while (*string)
    {
        catchar(buffer, *string);
        string++;
    }
}
 
static void DEFUN(catbuf,(buffer, buf, len),
           string_type *buffer AND
           char *buf AND
           unsigned int len)
{
 
    while (len--)
    {
        catchar(buffer, *buf);
        buf++;
    }
}
 
 
 
static unsigned int
DEFUN(skip_white_and_stars,(src, idx),
      string_type *src AND
      unsigned int idx)
{
    while (isspace(at(src,idx))
           || (at(src,idx) == '*' && at(src,idx +1) !='/'))
     idx++;
    return idx;
 
 
}
/***********************************************************************/
 
 
string_type stack[STACK];
string_type *tos;
 
unsigned int idx = 0; /* Pos in input buffer */
string_type *ptr; /* and the buffer */
typedef void (*stinst_type)(NOARGS);
stinst_type *pc;
stinst_type sstack[STACK];
stinst_type *ssp = &sstack[0];
int istack[STACK];
int *isp = &istack[0];
 
typedef int *word_type;
 
 
 
struct dict_struct
{
    char *word;
    struct dict_struct *next;
   stinst_type *code;
    int code_length;
    int code_end;
    int var;
 
};
typedef struct dict_struct dict_type;
#define WORD(x) static void x(NOARGS)
 
static void DEFUN(exec,(word),
                  dict_type *word)
{
    pc = word->code;
    while (*pc)
    {
        (*pc)();
    }
 
}
WORD(call)
{
stinst_type *oldpc = pc;
    dict_type *e;
    e =  (dict_type *)(pc [1]);
    exec(e);
    pc = oldpc + 2;
 
}
 
WORD(remchar)
{
    tos->write_idx--;
    pc++;
 
}
 
WORD(push_number)
{
    isp++;
    pc++;
    *isp = (int)(*pc);
    pc++;
 
}
 
 
 
 
WORD(push_text)
{
 
    tos++;
    init_string(tos);
    pc++;
    cattext(tos,*((char **)pc));
    pc++;
 
}
 
 
 
/* This function removes everything not inside comments starting on
   the first char of the line from the  string, also when copying
   comments, removes blank space and leading *'s
   Blank lines are turned into one blank line
 */
 
static void
DEFUN(remove_noncomments,(src,dst),
           string_type *src AND
           string_type *dst)
{
    unsigned int idx = 0;
 
    while (at(src,idx))
    {
        /* Now see if we have a comment at the start of the line */
        if (at(src,idx) == '\n'
            && at(src,idx+1) ==  '/'
            && at(src,idx+2) == '*')
        {
            idx+=3;
 
            idx = skip_white_and_stars(src,idx);
 
            /* Remove leading dot */
            if (at(src, idx) == '.')
             idx++;
 
            /* Copy to the end of the line, or till the end of the
               comment */
            while (at(src, idx))
            {
                if (at(src, idx) == '\n')
                {
                    /* end of line, echo and scrape of leading blanks  */
                    if (at(src,idx +1) == '\n')
                     catchar(dst,'\n');
                    catchar(dst,'\n');
                    idx++;
                    idx =   skip_white_and_stars(src, idx);
                }
                else if (at(src, idx) == '*' && at(src,idx+1) == '/')
                {
                    idx +=2 ;
                    cattext(dst,"\nENDDD\n");
                    break;
                }
                else
                {
                    catchar(dst, at(src, idx));
                    idx++;
                }
            }
        }
        else idx++;
    }
}
/* turn foobar name(stuff); into foobar EXFUN(name,(stuff));
 
 */
 
static void
DEFUN_VOID(exfunstuff)
{
    unsigned int openp;
    unsigned int fname;
    unsigned int idx;
    string_type out;
    init_string(&out);
 
 
    /* make sure that it's not already exfuned */
    if(find(tos,"EXFUN") || find(tos,"PROTO") || !find(tos,"(")) {
            catstr(&out,tos);
        }
    else
    {
 
        /*Find the open paren*/
        for (openp = 0; at(tos, openp) != '('  && at(tos,openp); openp++)
         ;
 
        fname = openp;
        /* Step back to the fname */
        fname--;
        while (fname && isspace(at(tos, fname)))
         fname --;
        while (fname && !isspace(at(tos,fname)) && at(tos,fname) != '*')
         fname--;
 
        fname++;
 
        for (idx = 0; idx < fname; idx++)
        {
            catchar(&out, at(tos,idx));
        }
 
        cattext(&out,"EXFUN(");
        for (idx = fname; idx < openp; idx++)
        {
            catchar(&out, at(tos,idx));
        }
        cattext(&out,", ");
        while (at(tos,idx) && at(tos,idx) !=';')
        {
            catchar(&out, at(tos, idx));
            idx++;
        }
        cattext(&out,");\n");
    }
    overwrite_string(tos, &out);
    pc++;
 
}
 
 
 
/* turn {*
   and *} into comments */
 
WORD(translatecomments)
{
    unsigned int idx = 0;
    string_type out;
    init_string(&out);
 
    while (at(tos, idx))
    {
        if (at(tos,idx) == '{' && at(tos,idx+1) =='*')
        {
            cattext(&out,"      /*");
            idx+=2;
        }
        else if (at(tos,idx) == '*' && at(tos,idx+1) =='}')
        {
            cattext(&out,"*/");
            idx+=2;
        }
        else
        {
            catchar(&out, at(tos, idx));
            idx++;
        }
    }
 
 
    overwrite_string(tos, &out);
 
    pc++;
 
}
 
/* find something like
   QUICKREF
     memchar ansi  pure
 
     into
     merge with words on tos and output them to stderror
 
*/
WORD(quickref)
{
  string_type *nos = tos-1;
  unsigned int nosscan = 0;
  unsigned int idx = 0;
 
  while (at(tos, idx))
  {
    if (at(tos,idx) == '~')
    {
      /* Skip the whitespace */
      while (at(nos, nosscan) == ' ')
       nosscan++;
 
      /* Sub the next word from the nos*/
      while (at(nos, nosscan) != ' ' &&
             at(nos, nosscan) != 0)
      {
        fprintf(stderr, "%c", at(nos, nosscan));
        nosscan++;
      }
    }
 
    else
    {
      fprintf(stderr,"%c", at(tos, idx));
 
    }
    idx++;
  }
 
  delete_string(tos);
  delete_string(nos);
  tos-=2;
  pc++;
 
}
 
#if 0
/* turn everything not starting with a . into a comment */
 
WORD(manglecomments)
{
    unsigned int idx = 0;
    string_type out;
    init_string(&out);
 
    while (at(tos, idx))
    {
        if (at(tos,idx) == '\n' && at(tos,idx+1) =='*')
        {
            cattext(&out,"      /*");
            idx+=2;
        }
        else if (at(tos,idx) == '*' && at(tos,idx+1) =='}')
        {
            cattext(&out,"*/");
            idx+=2;
        }
        else
        {
            catchar(&out, at(tos, idx));
            idx++;
        }
    }
 
 
    overwrite_string(tos, &out);
 
    pc++;
 
}
#endif
 
/* Mod tos so that only lines with leading dots remain */
static void
DEFUN_VOID(outputdots)
{
    unsigned int idx = 0;
    string_type out;
    init_string(&out);
 
    while (at(tos, idx))
    {
        if (at(tos, idx) == '\n' && at(tos, idx+1) == '.')
        {
            idx += 2;
 
            while (at(tos, idx) && at(tos, idx)!='\n')
            {
                if (at(tos,idx) == '{' && at(tos,idx+1) =='*')
                {
                    cattext(&out," /*");
                    idx+=2;
                }
                else if (at(tos,idx) == '*' && at(tos,idx+1) =='}')
                {
                    cattext(&out,"*/");
                    idx+=2;
                }
                else
                {
                    catchar(&out, at(tos, idx));
                    idx++;
                }
            }
            catchar(&out,'\n');
        }
        else
        {
            idx++;
        }
    }
 
    overwrite_string(tos, &out);
    pc++;
 
}
 
/* Find lines starting with . and | and put example around them on tos
   turn
   {*  into open comment and *} into close comment
   escape curlies
 
*/
WORD(courierize)
{
    string_type out;
    unsigned int idx = 0;
 
    init_string(&out);
 
    while (at(tos, idx))
    {
        if (at(tos, idx) == '\n'
            && (at(tos, idx +1 ) == '.'
                || at(tos,idx+1) == '|'))
        {
            cattext(&out,"\n@smallexample\n");
            do
            {
                idx += 2;
 
                while (at(tos, idx) && at(tos, idx)!='\n')
                {
                    if (at(tos,idx)=='{' && at(tos,idx+1) =='*')
                    {
                        cattext(&out," /*");
                        idx+=2;
                    }
                    else if (at(tos,idx)=='*' && at(tos,idx+1) =='}')
                    {
                        cattext(&out,"*/");
                        idx+=2;
                    }
                    else if (at(tos,idx) == '{')
                    {
                        cattext(&out,"@{");
                        idx++;
                    }
                    else if (at(tos,idx) == '}')
                    {
                        cattext(&out,"@}");
                        idx++;
                    }
                    else
                    {
                        catchar(&out, at(tos, idx));
                        idx++;
                    }
 
                }
                catchar(&out,'\n');
            }
            while (at(tos, idx) == '\n'
                   && (at(tos, idx+1) == '.')
                   || (at(tos,idx+1) == '|'));
            cattext(&out,"@end smallexample");
        }
        else
        {
            catchar(&out, at(tos, idx));
            idx++;
        }
    }
 
    overwrite_string(tos, &out);
    pc++;
 
 
}
 
/*
bulletize:  look for bullet item commands at start of line
 Bullet list:
   O+  emit @itemize @bullet
   o   emit @item       [note lowercase]
   O-  emit @end itemize
 
 Variable label list:
   o+  emit @table @code
   o   emit @item
   o-  emit @end table
*/
 
 
WORD(bulletize)
{
  unsigned int idx = 0;
  string_type out;
  init_string(&out);
 
  while (at(tos, idx)) {
       if (at(tos, idx) == '\n' &&  at(tos, idx+1) == 'o')
       {
         if (at(tos,idx+2) == '+') {
             cattext(&out,"\n@table @code\n");
             idx+=3;
           }
         else if (at(tos,idx+2) == '-') {
             cattext(&out,"\n@end table\n");
             idx+=3;
           }
         else if (isspace(at(tos,idx+2))) {
             cattext(&out,"\n@item ");
             idx+=3;
           }
         else {
             catchar(&out, at(tos, idx));
             idx++;
           }
       }
 
       else
        if (at(tos, idx) == '\n' &&  at(tos, idx+1) == 'O')
        {
          if (at(tos,idx+2) == '+') {
              cattext(&out,"\n@itemize @bullet\n");
              idx+=3;
            }
 
          else if (at(tos,idx+2) == '-') {
              cattext(&out,"\n@end itemize\n");
              idx+=3;
            }
          else {
              catchar(&out, at(tos, idx));
              idx++;
            }
        }
        else
        {
          catchar(&out, at(tos, idx));
          idx++;
        }
    }
 
  delete_string(tos);
  *tos = out;
  pc++;
 
}
 
/* Turn <<foo>> into @code{foo} in place at TOS
   Turn <[foo]> into @var{foo} in place at TOS
   nest them too !
 
*/
 
 
WORD(do_fancy_stuff)
 {
    unsigned int idx = 0;
    string_type out;
    init_string(&out);
    while (at(tos, idx))
    {
        if (at(tos, idx) == '<'
            && at(tos, idx+1) == '<'
            && (!isspace(at(tos,idx + 2)) || at(tos,idx+3) == '>'))
        {
            /* This qualifies as a << startup */
            idx +=2;
            cattext(&out,"@code{");
          }
 
        else    if (at(tos, idx) == '<'
            && at(tos, idx+1) == '['
            && !isspace(at(tos,idx + 2)))
        {
            /* This qualifies as a <[ startup */
            idx +=2;
            cattext(&out,"@var{");
          }
        else if (at(tos, idx) == '>'
                 && at(tos,idx+1) =='>')
        {
 
            cattext(&out,"}");
            idx+=2;
        }
        else if (at(tos, idx) == ']'
                 && at(tos,idx+1) =='>')
        {
            cattext(&out,"}");
            idx+=2;
        }
        else
        {
            catchar(&out, at(tos, idx));
            idx++;
        }
    }
    delete_string(tos);
    *tos = out;
    pc++;
 
}
/* A command is all upper case,and alone on a line */
static int
DEFUN( iscommand,(ptr, idx),
      string_type *ptr AND
      unsigned int idx)
{
    unsigned int len = 0;
    while (at(ptr,idx)) {
            if (isupper(at(ptr,idx)) || at(ptr,idx) == ' ' ||
                at(ptr,idx) == '_')
            {
             len++;
             idx++;
         }
            else if(at(ptr,idx) == '\n')
            {
                /* The length check will never fail on a real command
                 * because the commands are screened as the definitions file
                 * is read.  */
                if (len >= MIN_CMDLEN) return 1;
                return 0;
            }
            else return 0;
        }
    return 0;
 
}
 
 
unsigned int
DEFUN(copy_past_newline,(ptr, idx, dst),
      string_type *ptr AND
      unsigned int idx AND
      string_type *dst)
{
    while (at(ptr, idx) && at(ptr, idx) != '\n')
    {
        catchar(dst, at(ptr, idx));
        idx++;
 
    }
    catchar(dst, at(ptr, idx));
    idx++;
    return idx;
 
}
 
WORD(icopy_past_newline)
{
    tos++;
    init_string(tos);
    idx = copy_past_newline(ptr, idx, tos);
    pc++;
}
 
 
/* indent
   Take the string at the top of the stack, do some prettying */
 
 
 
 
WORD(kill_bogus_lines)
{
    int sl ;
 
    int idx = 0;
    int c;
    int dot = 0    ;
 
    string_type out;
    init_string(&out);
    /* Drop leading nl */
    while (at(tos,idx) == '\n')
    {
        idx++;
    }
    c = idx;
 
    /* Find the last char */
    while (at(tos,idx))
    {
        idx++;
    }
 
    /* find the last non white before the nl */
    idx--;
 
    while (idx && isspace(at(tos,idx)))
     idx--;
    idx++;
 
    /* Copy buffer upto last char, but blank lines before and after
       dots don't count */
    sl = 1;
 
    while (c < idx)
    {
        if (at(tos,c) == '\n'
            && at(tos,c+1) == '\n'
            && at(tos,c+2) == '.')
        {
            /* Ignore two linelines before  a dot*/
            c++;
        }
        else if (at(tos,c) == '.' && sl)
        {
            /* remember that this line started with a dot */
            dot=2;
        }
        else if (at(tos,c) == '\n'
                 && at(tos,c+1) == '\n'
                 && dot)
        {
            c++;
            /* Ignore two newlines when last line was dot */
        }
 
        catchar(&out, at(tos,c));
        if (at(tos,c) == '\n')
        {
            sl = 1;
 
            if (dot == 2)dot=1;else dot = 0;
        }
 
        c++;
 
    }
 
    /* Append nl*/
    catchar(&out, '\n');
    pc++;
    delete_string(tos);
    *tos = out;
 
 
}
 
WORD(indent)
{
    string_type out;
    int tab = 0;
    int idx = 0;
    int ol =0;
    init_string(&out);
    while (at(tos,idx)) {
            switch (at(tos,idx))
            {
              case '\n':
                cattext(&out,"\n");
                idx++;
                if (tab)
                {
                    cattext(&out,"    ");
                }
                ol = 0;
                break;
              case '(':
                tab++;
                if (ol == 0)
                    cattext(&out,"   ");
                idx++;
                cattext(&out,"(");
                ol = 1;
                break;
              case ')':
                tab--;
                cattext(&out,")");
                idx++;
                ol=1;
 
                break;
              default:
                catchar(&out,at(tos,idx));
                ol=1;
 
                idx++;
                break;
            }
        }
 
    pc++;
    delete_string(tos);
    *tos = out;
 
}
 
/* Change the TOS so that all that is left is the stuff inside the
 first <<foo>> .
*/
 
WORD(get_stuff_in_angle)
{
  unsigned int idx = 0;
  string_type out;
  init_string(&out);
 
  while (at(tos, idx))
    {
      if (at(tos,idx) == '<' && at(tos,idx+1) =='<')
        {
          idx+=2;
 
          while (!(at(tos,idx) == '>' && at(tos,idx+1) == '>'))
            {
              catchar(&out, at(tos, idx));
              idx++;
            }
          break;
        }
      idx++;
    }
  catchar(&out,'\n');
 
  overwrite_string(tos, &out);
  pc++;
}
 
 
WORD(get_stuff_in_command)
{
  tos++;
  init_string(tos);
 
  while (at(ptr, idx)) {
    if (iscommand(ptr, idx))  break;
    idx =   copy_past_newline(ptr, idx, tos);
  }
  pc++;
}
 
WORD(swap)
{
    string_type t;
 
    t = tos[0];
    tos[0] = tos[-1];
    tos[-1] =t;
    pc++;
 
}
 
WORD(dup)
{
    tos++;
    init_string(tos);
    catstr(tos, tos-1);
    pc++;
 
}
 
 
 
WORD(icatstr)
{
    catstr(tos-1, tos);
    delete_string(tos);
    tos--;
    pc++;
 
}
 
WORD(skip_past_newline)
{
    while (at(ptr,idx)
           && at(ptr,idx) != '\n')
     idx++;
    idx++;
    pc++;
}
 
 
WORD(internalmode)
{
    internal_mode = *(isp);
    isp--;
    pc++;
}
 
WORD(maybecatstr)
{
    if (internal_wanted == internal_mode)
    {
        catstr(tos-1, tos);
    }
    delete_string(tos);
    tos--;
    pc++;
 
}
 
char *
DEFUN(nextword,(string, word),
      char *string AND
      char **word)
{
  char *word_start;
  int idx;
  char *dst;
  char *src;
 
  int length = 0;
 
  while (isspace(*string) || *string == '-') {
      if (*string == '-')
      {
        while (*string && *string != '\n')
         string++;
 
      }
      else {
          string++;
        }
    }
  if (!*string) return 0;
 
  word_start = string;
  if (*string == '"')
  {
    string++;
    length++;
 
    while (*string != '"')
    {
      string++;
      length++;
    }
  }
  else
  {
 
 
    while (!isspace(*string))
    {
      string++;
      length++;
    }
  }
 
  *word = malloc(length + 1);
 
  dst = *word;
  src = word_start;
 
 
  for (idx= 0; idx < length; idx++)
  {
 
    if (src[idx] == '\\' && src[idx+1] == 'n')
    {
      *dst++ = '\n';
      idx++;
 
    }
    else *dst++ = src[idx];
  }
  *dst++ = 0;
 
 
 
 
 
  if(*string)
   return string + 1;
  else
   return 0;
 
}
dict_type *root;
dict_type *
DEFUN(lookup_word,(word),
      char *word)
{
    dict_type *ptr = root;
    while (ptr) {
            if (strcmp(ptr->word, word) == 0) return ptr;
            ptr = ptr->next;
 
         }
    fprintf(stderr,"Can't find %s\n",word);
    return 0;
 
 
}
 
static void DEFUN_VOID(perform)
{
    tos = stack;
 
    while (at(ptr, idx)) {
            /* It's worth looking through the command list */
            if (iscommand(ptr, idx))
            {
                char *next;
                dict_type *word ;
 
                (void)          nextword(addr(ptr, idx), &next);
 
 
                word = lookup_word(next);
 
 
 
 
                if (word)
                {
                    if(Verbose)  fprintf(stderr, "CMD '%s'\n", word->word);
                    exec(word);
                }
                else
                {
                    fprintf(stderr,"warning, %s is not recognised\n",  next);
                    skip_past_newline();
                }
 
            }
            else skip_past_newline();
 
        }
}
 
dict_type *
DEFUN(newentry,(word),
      char *word)
{
    dict_type *new = (dict_type *)malloc(sizeof(dict_type));
    new->word = word;
    new->next = root;
    root = new;
    new->code = (stinst_type *)malloc(sizeof(stinst_type ));
    new->code_length = 1;
    new->code_end = 0;
    return new;
 
}
 
 
unsigned int
DEFUN(add_to_definition,(entry, word),
      dict_type *entry AND
      stinst_type word)
{
    if (entry->code_end == entry->code_length)
    {
        entry->code_length += 2;
        entry->code =
         (stinst_type *) realloc((char *)(entry->code),
                               entry->code_length *sizeof(word_type));
    }
    entry->code[entry->code_end] = word;
 
return     entry->code_end++;
}
 
 
 
 
 
 
 
void
DEFUN(add_intrinsic,(name, func),
      char *name AND
      void (*func)(NOARGS))
{
    dict_type *new = newentry(name);
    add_to_definition(new, func);
    add_to_definition(new, 0);
}
 
void
DEFUN(add_var,(name),
      char *name)
{
    dict_type *new = newentry(name);
    add_to_definition(new, push_number);
    add_to_definition(new, (stinst_type)(&(new->var)));
    add_to_definition(new,0);
 
}
 
 
 
 
int
DEFUN(compile, (string),
      char *string)
 
{
    int  ret=0;
    /* add words to the dictionary */
    char *word;
    string = nextword(string, &word);
    while (string && *string && word[0])
    {
        if (strcmp(word,"var")==0)
        {
          string=nextword(string, &word);
 
          add_var(word);
          string=nextword(string, &word);
        }
        else
 
        if (word[0] == ':')
        {
            dict_type *ptr;
            /* Compile a word and add to dictionary */
            string = nextword(string, &word);
            if(Verbose)  fprintf(stderr, "Found command '%s'\n", word);
            if(strlen(word) < MIN_CMDLEN)  {
                fprintf(stderr, "ERROR:  Command '%s' is too short ", word);
                fprintf(stderr, "(MIN_CMDLEN is %d)\n", MIN_CMDLEN);
                ret++;
            }
 
            ptr = newentry(word);
            string = nextword(string, &word);
            while (word[0] != ';' )
            {
                 switch (word[0])
                 {
 
 
                   case '"':
                     /* got a string, embed magic push string
                        function */
                     add_to_definition(ptr, push_text);
                     add_to_definition(ptr, (stinst_type)(word+1));
                     break;
                   case '0':
                   case '1':
                   case '2':
                   case '3':
                   case '4':
                   case '5':
                   case '6':
                   case '7':
                   case '8':
                   case '9':
                     /* Got a number, embedd the magic push number
                        function */
                     add_to_definition(ptr, push_number);
                     add_to_definition(ptr, atol(word));
                     break;
                   default:
                     add_to_definition(ptr, call);
                     add_to_definition(ptr, lookup_word(word));
                 }
 
                string = nextword(string, &word);
            }
            add_to_definition(ptr,0);
            string = nextword(string, &word);
        }
        else
        {
            fprintf(stderr,"syntax error at %s\n",string-1);
            ret++;
        }
    }
 
return(ret);
}
 
 
static void DEFUN_VOID(bang)
{
*(int *)((isp[0])) = isp[-1];
isp-=2;
pc++;
 
}
 
WORD(atsign)
{
    isp[0] = *(int *)(isp[0]);
    pc++;
}
 
WORD(hello)
{
 
    printf("hello\n");
    pc++;
}
 
 
 
static void DEFUN(read_in, (str, file),
           string_type *str AND
                  FILE *file)
{
    char buff[10000];
    unsigned int r;
    do
    {
        r = fread(buff, 1, sizeof(buff), file);
        catbuf(str, buff, r);
    }
    while (r);
    buff[0] = 0;
 
    catbuf(str, buff,1);
 
}
 
 
#if 0
static void DEFUN_VOID(usage)
{
    fprintf(stderr,"usage: -[i|v] -f macrofile <file >file\n");
    exit(33);
}
#endif
 
int DEFUN(main,(ac,av),
int ac AND
char *av[])
{
    unsigned int i;
 
 
    string_type buffer;
    string_type pptr;
 
 
    init_string(&buffer);
    init_string(&pptr);
    init_string(stack+0);
    tos=stack+1;
    ptr = &pptr;
 
    add_intrinsic("push_text", push_text);
    add_intrinsic("!", bang);
    add_intrinsic("@", atsign);
    add_intrinsic("hello",hello);
    add_intrinsic("skip_past_newline", skip_past_newline );
    add_intrinsic("catstr", icatstr );
    add_intrinsic("copy_past_newline", icopy_past_newline );
    add_intrinsic("dup", dup );
    add_intrinsic("remchar", remchar );
    add_intrinsic("get_stuff_in_command", get_stuff_in_command );
    add_intrinsic("get_stuff_in_angle", get_stuff_in_angle );
    add_intrinsic("do_fancy_stuff", do_fancy_stuff );
    add_intrinsic("bulletize", bulletize );
    add_intrinsic("courierize", courierize );
    add_intrinsic("swap", swap );
    add_intrinsic("outputdots", outputdots );
    add_intrinsic("exfunstuff", exfunstuff );
    add_intrinsic("maybecatstr", maybecatstr );
    add_intrinsic("translatecomments", translatecomments );
    add_intrinsic("kill_bogus_lines", kill_bogus_lines);
    add_intrinsic("indent", indent);
    add_intrinsic("quickref", quickref);
    add_intrinsic("internalmode", internalmode);
 
    /* Put a nl at the start */
    catchar(&buffer,'\n');
 
    read_in(&buffer, stdin);
    remove_noncomments(&buffer, ptr);
    for (i= 1; i < ac; i++)
    {
        if (av[i][0] == '-')
        {
            if (av[i][1] == 'f')
            {
                string_type b;
                FILE *f;
                init_string(&b);
 
                f  = fopen(av[i+1],"r");
                if (!f)
                {
                  fprintf(stderr,"Can't open the input file %s\n",av[i+1]);
                  return 33;
                }
                if(Verbose)  fprintf(stderr, "Reading -f '%s'\n", av[i+1]);
 
 
                read_in(&b, f);
                if( compile(b.ptr) )  { fclose(f); exit(1); }
                perform();
                fclose(f);
            }
            else    if (av[i][1] == 'i')
            {
                internal_wanted = 1;
            }
            else    if (av[i][1] == 'v')
            {
                Verbose++;
            }
        }
 
    }
    write_buffer(stack+0);
    return 0;
}
 
 
 
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[/] [openrisc/] [trunk/] [gnu-stable/] [newlib-1.18.0/] [newlib/] [doc/] [makedoc.c] - Blame information for rev 847

Line No.	Rev	Author	Line
1	207	jeremybenn	`/* chew`
2			`Copyright (C) 1990-1992 Free Software Foundation, Inc.`
3			`Contributed by steve chamberlain @cygnus`
4
5
6			`This program is free software; you can redistribute it and/or modify`
7			`it under the terms of the GNU General Public License as published by`
8			`the Free Software Foundation; either version 2 of the License, or`
9			`(at your option) any later version.`
10
11			`This program is distributed in the hope that it will be useful,`
12			`but WITHOUT ANY WARRANTY; without even the implied warranty of`
13			`MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`
14			`GNU General Public License for more details.`
15
16			`You should have received a copy of the GNU General Public License`
17			`along with this program; if not, write to the Free Software`
18			`Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */`
19
20			`/*`
21			`Yet another way of extracting documentation from source.`
22			`No, I haven't finished it yet, but I hope you people like it better`
23			`that the old way`
24
25			`sac`
26
27			`Basically, this is a sort of string forth, maybe we should call it`
28			`struth?`
29
30			`You define new words thus:`
31			`: <newword> <oldwords> ;`
32			`There is no`
33
34			`*/`
35
36
37
38			`#include "ansidecl.h"`
39			`#include <stdio.h>`
40			`#include <stdlib.h>`