page@swan.ulowell.edu (Bob Page) (01/11/89)
Submitted-by: oscvax!jan@uunet.UU.NET (Jan Sven Trabandt)
Posting-number: Volume 89, Issue 1
Archive-name: langauges/exdoc.1
[uuencoded binary included. ..Bob]
# This is a shell archive.
# Remove everything above and including the cut line.
# Then run the rest of the file through sh.
#----cut here-----cut here-----cut here-----cut here----#
#!/bin/sh
# shar: Shell Archiver
# Run the following text with /bin/sh to create:
# exdoc.c
# exdoc.uu
# This archive created: Tue Jan 10 18:15:17 1989
cat << \SHAR_EOF > exdoc.c
/*
* exdoc.c V1.0 (C)Copyright 1988, Jan Sven Trabandt. All Rights Reserved.
* This software may not be distributed for profit; in other words, it is
* freely redistributable except that it may not be incorporated as part of any
* commercial software package without my express written consent.
* Portions of this code are (C)Copyright 1988, Matthew Dillon.
*
* extract documentation that is in the canonical form from a [.c] file,
* putting it to stdout.
* it requires about 1K stack to run.
* can someone tell me exactly why it isn't pure (1.3 pure bit/resident)???
* uucp: {utgpu,utzoo,lsuc}!oscvax!jan
*
* look at this comment as an example;
* note that the start of the comment block has 2 characters followed by a '\n'
* (the start-C-comment)
* and the last line has 3 characters followed by a '\n'
* (a space and the end-C-comment)
* what comes inbetween these 2 lines can be in any form
*/
#include <stdio.h>
#include <ctype.h>
#ifdef MCH_AMIGA
#include <libraries/dos.h>
#include <libraries/dosextens.h>
#include <functions.h>
#endif MCH_AMIGA
#ifndef MCH_AMIGA
#ifndef NODATE
#define NODATE
#endif
#endif !MCH_AMIGA
#define VERSION "1.0"
/* flags */
#define IN_COMMENT ((char)(1 << 0)) /* inside a "valid" comment */
#define REVERSE ((char)(1 << 1))
#define PRINTIT ((char)(1 << 7))
#define MAX_LINESIZE 514
/* flags for copystuff */
#define COPY_DATE ((char)(1 << 0))
#define COPY_COMM ((char)(1 << 1))
#define COPY_PROT ((char)(1 << 2))
#ifdef MCH_AMIGA
typedef struct FileInfoBlock FIB;
FIB *getFileInfo();
extern void *malloc();
#ifdef AZTEC_C
#define strcpy _BUILTIN_strcpy
#define strcmp _BUILTIN_strcmp
#define strlen _BUILTIN_strlen
#endif AZTEC_C
#endif MCH_AMIGA
help( argc, argv )
int argc;
char **argv;
{
fprintf(stderr,
"Usage: %s [infile] [-o outfile]"
#ifndef NODATE
" [-cdp]"
#endif !NODATE
" [-i<n>] [-r] [-qh?]\n"
" V%s ... file and flags can appear in any order:\n"
" infile : input file (default: stdin)\n"
" -o outfile : output file (default: stdout)\n"
#ifndef NODATE
" -c : copy file comment (must give in/out files)\n"
" -d : copy datestamp (must give infile & outfile)\n"
" -p : copy protection bits (must give in/out files)\n"
#endif !NODATE
" -i<n> : ignore <n> comment blocks\n"
" -r : reverse (everything but comment blocks)\n"
" in this case ignore# is how many to keep\n"
" -q : quiet (suppress warning messages)\n"
" -h, -? : help (this information)\n\n",
argv[0], VERSION);
exit( (int) 0 );
} /* help */
main( argc, argv )
int argc;
char **argv;
{
FILE *fpin, *fpout;
char *infname = NULL, *outfname = NULL;
char *temp;
register short i;
short state = 0;
char copystuff = 0, quiet = 0;
char s[MAX_LINESIZE];
register char flags = 0;
char dummy = '\0';
for( i = 1; i < argc; ++i ) {
temp = argv[i];
if( *temp++ == '-' ) { /* parse flags */
while( *temp ) {
switch( tolower(*temp++) ) {
case 'i':
/* this way allows while loop to stop properly */
if( !*temp ) { /* if "-i <nnn>" */
state = atoi( argv[++i] ); /* use next arg */
} else {
state = atoi( temp ); /* #comments to skip/keep */
temp = &dummy;
}
break;
case 'r':
flags |= REVERSE | PRINTIT;
break;
case 'o':
/* this way allows while loop to stop properly */
if( !*temp ) { /* if "-o outfile" */
outfname = argv[++i]; /* use next arg */
} else {
outfname = temp; /* outfile name */
temp = &dummy;
}
break;
#ifndef NODATE
case 'c':
copystuff |= COPY_COMM;
break;
case 'd':
copystuff |= COPY_DATE;
break;
case 'p':
copystuff |= COPY_PROT;
break;
#endif !NODATE
case 'q':
quiet = 1;
break;
case 'h':
case '?':
help( argc, argv );
break;
default:
fprintf(stderr, "unknown flag '%c' ignored\n", *(temp - 1));
break;
} /* switch */
} /* while */
} else {
if( infname ) { /* error: too many filenames */
help( argc, argv );
} else {
infname = argv[i];
}
}
} /* for */
#ifndef NODATE
if( !infname || !outfname ) { /* need both i/o filenames to copy stuff */
copystuff = 0;
}
#endif !NODATE
if( !infname ) {
fpin = stdin;
if( !outfname && !quiet ) {
fprintf(stderr, "%s from stdin to stdout (c-\\ is EOF)\n", argv[0]);
}
} else {
if( !(fpin = fopen(infname, "r")) ) {
if( !quiet ) {
fprintf(stderr, "Error, can't open file '%s' for input\n",
infname);
}
exit( (int) 1000 );
}
}
if( !outfname ) {
fpout = stdout;
} else if( !(fpout = fopen(outfname, "w")) ) {
if( !quiet ) {
fprintf(stderr, "Error, can't open file '%s' for output\n",
outfname);
}
exit( (int) 1000 );
}
if( flags & REVERSE ) {
state = -state; /* negative #ignore meanse #keep */
}
/* print comment block if state is negative
* state is initialized to the number of comment blocks to skip
*/
while( fgets(s, MAX_LINESIZE, fpin) ) {
/* if start of valid comment (and not nested) */
if( !strcmp(s, "/*\n") && !(flags & IN_COMMENT) ) {
flags |= IN_COMMENT;
if( !(flags & REVERSE) ) { /* if not reverse, ie. state is #skip */
--state; /* one less to skip */
}
if( state < 0 ) {
flags |= PRINTIT;
} else {
flags &= ~PRINTIT;
}
/* if end of valid comment (and we had start of comment) */
} else if( !strcmp(s, " */\n") && (flags & IN_COMMENT) ) {
if( state < 0 ) {
++state;
}
if( flags & PRINTIT ) {
fprintf(fpout, "%s\n", s);
}
if( flags & REVERSE ) {
flags |= PRINTIT;
} else {
flags &= ~PRINTIT;
}
flags &= ~IN_COMMENT;
continue;
}
if( flags & PRINTIT ) {
fprintf(fpout, "%s", s);
}
} /* while */
if( fpout != stdout ) {
fclose( fpout );
}
#ifndef NODATE
if( copystuff ) { /* need to copy file datestamp/comm/prot */
FIB *fib;
long lock;
if( !(fib = getFileInfo(infname, &lock)) ) {
if( !quiet ) {
fprintf(stderr, "couldn't get file info for input file '%s'\n",
infname);
}
} else {
if( copystuff & COPY_DATE ) {
setfiledate( outfname, &fib->fib_Date );
}
if( copystuff & COPY_PROT ) {
SetProtection( outfname, fib->fib_Protection );
}
if( copystuff & COPY_COMM ) {
SetComment( outfname, fib->fib_Comment );
}
freeFileInfo( fib, lock );
}
}
#endif !NODATE
if( fpin != stdin ) {
fclose( fpin );
}
} /* main */
#ifdef MCH_AMIGA
#ifndef NODATE
/* The following routines (C)Copyright 1988, Matt Dillon,
* from his backup program and support library (sup32.lib).
* Permission was granted to use them in this program.
*/
FIB *
getFileInfo(path, plock)
char *path;
long *plock;
{
register long lock;
register FIB *fib;
*plock = NULL;
if (lock = (long) Lock(path, SHARED_LOCK)) {
if (fib = malloc(sizeof(FIB))) { /* longword align FIB */
if (Examine(lock, fib)) {
*plock = lock;
return(fib);
}
free(fib);
}
UnLock(lock);
}
return(NULL);
}
freeFileInfo(fib, lock)
FIB *fib;
long lock;
{
if (fib)
free(fib);
if (lock)
UnLock(lock);
}
/*
* SETFILEDATE.C
*
* BOOL = setfiledate(filename, date)
*/
#define BTOC(bptr) ((long)(bptr) << 2)
#define CTOB(cptr) ((long)(cptr) >> 2)
#ifndef ACTION_SET_DATE
#define ACTION_SET_DATE 34
#endif
typedef struct Task TASK;
typedef struct Process PROC;
typedef struct StandardPacket STDPKT;
typedef struct MsgPort MSGPORT;
typedef struct FileLock LOCK;
typedef struct DateStamp DATESTAMP;
extern TASK *FindTask();
extern void *AllocMem();
setfiledate(file, date)
char *file;
DATESTAMP *date;
{
register STDPKT *packet;
register char *buf;
register PROC *proc;
long result;
long lock;
{
register long flock = (long) Lock(file, SHARED_LOCK);
register short i;
register char *ptr = file;
if (flock == NULL)
return(NULL);
lock = (long) ParentDir(flock);
UnLock(flock);
if (!lock)
return(NULL);
for (i = strlen(ptr) - 1; i >= 0; --i) {
if (ptr[i] == '/' || ptr[i] == ':')
break;
}
file += i + 1;
}
proc = (PROC *)FindTask(NULL);
packet = (STDPKT *)AllocMem((long)sizeof(STDPKT), MEMF_CLEAR|MEMF_PUBLIC);
buf = AllocMem((long)strlen(file)+2, MEMF_PUBLIC);
strcpy(buf+1,file);
buf[0] = strlen(file);
packet->sp_Msg.mn_Node.ln_Name = (char *)&(packet->sp_Pkt);
packet->sp_Pkt.dp_Link = &packet->sp_Msg;
packet->sp_Pkt.dp_Port = &proc->pr_MsgPort;
packet->sp_Pkt.dp_Type = ACTION_SET_DATE;
packet->sp_Pkt.dp_Arg1 = NULL;
packet->sp_Pkt.dp_Arg2 = (long)lock; /* lock on parent dir of file */
packet->sp_Pkt.dp_Arg3 = (long)CTOB(buf); /* BPTR to BSTR of file name */
packet->sp_Pkt.dp_Arg4 = (long)date; /* APTR to datestamp structure */
PutMsg(((LOCK *)BTOC(lock))->fl_Task, packet);
WaitPort(&proc->pr_MsgPort);
GetMsg(&proc->pr_MsgPort);
result = packet->sp_Pkt.dp_Res1;
FreeMem(packet, (long)sizeof(STDPKT));
FreeMem(buf, (long)strlen(file)+2);
UnLock(lock);
return(result);
}
#endif !NODATE
#endif MCH_AMIGA
SHAR_EOF
cat << \SHAR_EOF > exdoc.uu
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SHAR_EOF
# End of shell archive
exit 0
--
Bob Page, U of Lowell CS Dept. page@swan.ulowell.edu ulowell!page
Have five nice days.