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OS/2 Shareware BBS: 5 Edit
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thesrc251.zip
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manext.c
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1997-11-04
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/***********************************************************************/
/* MANEXT - Extract manual pages from C source code. */
/***********************************************************************/
/*
* MANEXT - A program to extract manual pages from C source code.
* Copyright (C) 1991-1997 Mark Hessling
*
* 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 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.
*
*
* If you make modifications to this software that you feel increases
* it usefulness for the rest of the community, please email the
* changes, enhancements, bug fixes as well as any and all ideas to me.
* This software is going to be maintained and enhanced as deemed
* necessary by the community.
*
* Mark Hessling Email: M.Hessling@qut.edu.au
* PO Box 203 Phone: +617 3802 0800
* Bellara http://www.gu.edu.au/gext/the/markh.html
* QLD 4507 **** Maintainer PDCurses & REXX/SQL ****
* Australia ************* Author of THE ************
*/
/*
$Id: manext.c 2.1 1995/06/24 16:30:24 MH Rel MH $
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#ifdef HAVE_PROTO
void display_info(void);
#else
void display_info();
#endif
typedef unsigned char bool;
typedef char CHARTYPE;
#define TRUE 1
#define FALSE 0
#define MAX_LINE 255
#define FORMAT_MANUAL 0
#define FORMAT_QUICK_REF 1
#define STATE_IGNORE 0
#define STATE_SYNTAX 1
#define STATE_COMMAND 2
#define STATE_DEFAULT 3
/***********************************************************************/
#ifdef HAVE_PROTO
short strzne(CHARTYPE *str,CHARTYPE ch)
#else
short strzne(str,ch)
CHARTYPE *str;
CHARTYPE ch;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
register short len=0;
register short i = 0;
/*--------------------------- processing ------------------------------*/
len = strlen(str);
for (; i<len && str[i]==ch; i++);
if (i>=len)
i = (-1);
return(i);
}
/***********************************************************************/
#ifdef HAVE_PROTO
short strzrevne(CHARTYPE *str,CHARTYPE ch)
#else
short strzrevne(str,ch)
CHARTYPE *str;
CHARTYPE ch;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
register short len=0;
/*--------------------------- processing ------------------------------*/
len = strlen(str);
for (--len; len>=0 && str[len]==ch; len--);
return(len);
}
/***********************************************************************/
#ifdef HAVE_PROTO
bool blank_field(CHARTYPE *field)
#else
bool blank_field(field)
CHARTYPE *field;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
/*--------------------------- processing ------------------------------*/
if (strzne(field,' ') == (-1))
return(TRUE); /* field is NULL or just contains spaces */
return(FALSE);
}
/***********************************************************************/
#ifdef HAVE_PROTO
CHARTYPE *strtrunc(CHARTYPE *string)
#else
CHARTYPE *strtrunc(string)
CHARTYPE *string;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
register short i=0;
short pos=0;
/*--------------------------- processing ------------------------------*/
pos = strzrevne(string,' ');
if (pos == (-1))
strcpy(string,"");
else
*(string+pos+1) = '\0';
pos = strzne(string,' ');
if (pos != (-1))
{
for (i=0;*(string+i)!='\0';i++)
*(string+i) = *(string+i+pos);
*(string+i) = '\0';
}
return(string);
}
/***********************************************************************/
#ifdef HAVE_PROTO
CHARTYPE *strtrim(CHARTYPE *string,char ch)
#else
CHARTYPE *strtrim(string,ch)
CHARTYPE *string,ch;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
register short i=0;
short pos=0;
/*--------------------------- processing ------------------------------*/
for (i=0;i<strlen(string);i++)
{
if (*(string+i) == ch)
return(string+i+1);
}
return(string);
}
/***********************************************************************/
#ifdef HAVE_PROTO
int main(int argc,char *argv[])
#else
int main(argc,argv)
int argc;
char *argv[];
#endif
/***********************************************************************/
{
char s[MAX_LINE + 1]; /* input line */
char save_line[MAX_LINE + 1];
register int i = 0;
FILE *fp;
char c;
char append=0;
int format=FORMAT_MANUAL;
int state=STATE_IGNORE;
int file_start=1;
#ifdef __EMX__
_wildcard(&argc,&argv);
#endif
if (strcmp(argv[1],"-h") == 0)
{
display_info();
exit(1);
}
if (strcmp(argv[1],"-q") == 0) /* generate quick reference */
{
format = FORMAT_QUICK_REF;
file_start = 2;
}
for(i=file_start;i<argc;i++)
{
if ((fp = fopen(argv[i],"r")) == NULL)
{
fprintf(stderr,"\nCould not open %s\n",argv[i]);
continue;
}
while(1)
{
if (fgets(s, (int)sizeof(s), fp) == NULL)
{
if (ferror(fp) != 0)
{
fprintf(stderr, "*** Error reading %s. Exiting.\n",argv[i]);
exit(1);
}
break;
}
/* check for manual entry marker at beginning of line */
if (strncmp(s, "/*man-start*", 12) != 0)
continue;
state = STATE_IGNORE;
/* inner loop */
for (;;)
{
/* read next line of manual entry */
if (fgets(s, (int)sizeof(s), fp) == NULL)
{
if (ferror(fp) != 0)
{
fprintf(stderr, "*** Error reading %s. Exiting.\n",argv[i]);
exit(1);
}
break;
}
/* check for end of entry marker */
if (strncmp(s, "**man-end", 9) == 0)
break;
switch(format)
{
case FORMAT_MANUAL:
printf(" %s",s);
break;
case FORMAT_QUICK_REF:
s[strlen(s)-1] = '\0';
switch(state)
{
case STATE_IGNORE:
if (strncmp(s, "COMMAND", 7) == 0)
{
state = STATE_COMMAND;
break;
}
if (strncmp(s, "SYNTAX", 6) == 0)
{
state = STATE_SYNTAX;
break;
}
if (strncmp(s, "DEFAULT", 7) == 0)
{
state = STATE_DEFAULT;
break;
}
break;
case STATE_COMMAND:
strcpy(save_line,s);
state = STATE_IGNORE;
break;
case STATE_DEFAULT:
if (blank_field(s))
{
state = STATE_IGNORE;
break;
}
printf(" Default: %s\n",strtrunc(s));
break;
case STATE_SYNTAX:
if (blank_field(s))
{
printf(" %s\n",strtrunc(strtrim(save_line,'-')));
state = STATE_IGNORE;
break;
}
printf(" %s\n",strtrunc(s));
break;
default:
break;
}
break;
default:
break;
}
}
if (format == FORMAT_MANUAL)
printf("\n\n\n --------------------------------------------------------------------------\n");
/* check if end of file */
if (feof(fp) != 0)
break;
}
fclose(fp);
}
if (format == FORMAT_MANUAL)
printf("\n\n\n\n\n");
return(0);
}
/***********************************************************************/
#ifdef HAVE_PROTO
void display_info(void)
#else
void display_info()
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
/*--------------------------- processing ------------------------------*/
fprintf(stderr,"\nMANEXT 1.00 Copyright (C) 1991-1997 Mark Hessling\n");
fprintf(stderr,"All rights reserved.\n");
fprintf(stderr,"MANEXT is distributed under the terms of the GNU\n");
fprintf(stderr,"General Public License and comes with NO WARRANTY.\n");
fprintf(stderr,"See the file COPYING for details.\n");
fprintf(stderr,"\nUsage: MANEXT sourcefile [...]\n\n");
fflush(stderr);
return;
}