/* * Received from Peter Deutsch (ghost@aladdin.com) * Fri, 26 Apr 91 10:10:10 PDT */ /* Copyright (C) 1989, 1991 Aladdin Enterprises. All rights reserved. Distributed by Free Software Foundation, Inc. This file is part of Ghostscript. Ghostscript is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY. No author or distributor accepts responsibility to anyone for the consequences of using it or for whether it serves any particular purpose or works at all, unless he says so in writing. Refer to the Ghostscript General Public License for full details. Everyone is granted permission to copy, modify and redistribute Ghostscript, but only under the conditions described in the Ghostscript General Public License. A copy of this license is supposed to have been given to you along with Ghostscript so you can know your rights and responsibilities. It should be in a file named COPYING. Among other things, the copyright notice and this notice must be preserved on all copies. */ /* ---------- Here is the GhostScript file COPYING, referred to above ---------- ----- These terms do NOT apply to the JPEG software itself; see README ------ GHOSTSCRIPT GENERAL PUBLIC LICENSE (Clarified 11 Feb 1988) Copyright (C) 1988 Richard M. Stallman Everyone is permitted to copy and distribute verbatim copies of this license, but changing it is not allowed. You can also use this wording to make the terms for other programs. The license agreements of most software companies keep you at the mercy of those companies. By contrast, our general public license is intended to give everyone the right to share Ghostscript. To make sure that you get the rights we want you to have, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. Hence this license agreement. Specifically, we want to make sure that you have the right to give away copies of Ghostscript, that you receive source code or else can get it if you want it, that you can change Ghostscript or use pieces of it in new free programs, and that you know you can do these things. To make sure that everyone has such rights, we have to forbid you to deprive anyone else of these rights. For example, if you distribute copies of Ghostscript, you must give the recipients all the rights that you have. You must make sure that they, too, receive or can get the source code. And you must tell them their rights. Also, for our own protection, we must make certain that everyone finds out that there is no warranty for Ghostscript. If Ghostscript is modified by someone else and passed on, we want its recipients to know that what they have is not what we distributed, so that any problems introduced by others will not reflect on our reputation. Therefore we (Richard M. Stallman and the Free Software Foundation, Inc.) make the following terms which say what you must do to be allowed to distribute or change Ghostscript. COPYING POLICIES 1. You may copy and distribute verbatim copies of Ghostscript source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy a valid copyright and license notice "Copyright (C) 1989 Aladdin Enterprises. All rights reserved. Distributed by Free Software Foundation, Inc." (or with whatever year is appropriate); keep intact the notices on all files that refer to this License Agreement and to the absence of any warranty; and give any other recipients of the Ghostscript program a copy of this License Agreement along with the program. You may charge a distribution fee for the physical act of transferring a copy. 2. You may modify your copy or copies of Ghostscript or any portion of it, and copy and distribute such modifications under the terms of Paragraph 1 above, provided that you also do the following: a) cause the modified files to carry prominent notices stating that you changed the files and the date of any change; and b) cause the whole of any work that you distribute or publish, that in whole or in part contains or is a derivative of Ghostscript or any part thereof, to be licensed at no charge to all third parties on terms identical to those contained in this License Agreement (except that you may choose to grant more extensive warranty protection to some or all third parties, at your option). c) You may charge a distribution fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. Mere aggregation of another unrelated program with this program (or its derivative) on a volume of a storage or distribution medium does not bring the other program under the scope of these terms. 3. You may copy and distribute Ghostscript (or a portion or derivative of it, under Paragraph 2) in object code or executable form under the terms of Paragraphs 1 and 2 above provided that you also do one of the following: a) accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Paragraphs 1 and 2 above; or, b) accompany it with a written offer, valid for at least three years, to give any third party free (except for a nominal shipping charge) a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Paragraphs 1 and 2 above; or, c) accompany it with the information you received as to where the corresponding source code may be obtained. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form alone.) For an executable file, complete source code means all the source code for all modules it contains; but, as a special exception, it need not include source code for modules which are standard libraries that accompany the operating system on which the executable file runs. 4. You may not copy, sublicense, distribute or transfer Ghostscript except as expressly provided under this License Agreement. Any attempt otherwise to copy, sublicense, distribute or transfer Ghostscript is void and your rights to use the program under this License agreement shall be automatically terminated. However, parties who have received computer software programs from you with this License Agreement will not have their licenses terminated so long as such parties remain in full compliance. 5. If you wish to incorporate parts of Ghostscript into other free programs whose distribution conditions are different, write to the Free Software Foundation at 675 Mass Ave, Cambridge, MA 02139. We have not yet worked out a simple rule that can be stated here, but we will often permit this. We will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software. Your comments and suggestions about our licensing policies and our software are welcome! Please contact the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, or call (617) 876-3296. NO WARRANTY BECAUSE GHOSTSCRIPT IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY NO WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC, RICHARD M. STALLMAN, ALADDIN ENTERPRISES, L. PETER DEUTSCH, AND/OR OTHER PARTIES PROVIDE GHOSTSCRIPT "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF GHOSTSCRIPT IS WITH YOU. SHOULD GHOSTSCRIPT PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M. STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., L. PETER DEUTSCH, ALADDIN ENTERPRISES, AND/OR ANY OTHER PARTY WHO MAY MODIFY AND REDISTRIBUTE GHOSTSCRIPT AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES, OR OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) GHOSTSCRIPT, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. -------------------- End of file COPYING ------------------------------ */ /* ansi2knr.c */ /* Convert ANSI function declarations to K&R syntax */ #include #include #ifdef BSD # include # define strchr index #else # ifdef VMS extern char *strcat(), *strchr(), *strcpy(), *strupr(); extern int strcmp(), strlen(), strncmp(); # else # include # endif #endif #ifdef MSDOS # include #else # ifdef VMS extern char *malloc(); extern void free(); # else # ifdef BSD extern char *malloc(); # else # include # endif # endif #endif /* Usage: ansi2knr input_file output_file * If no output_file is supplied, output goes to stdout. * There are no error messages. * * ansi2knr recognizes functions by seeing a non-keyword identifier * at the left margin, followed by a left parenthesis, * with a right parenthesis as the last character on the line. * It will recognize a multi-line header if the last character * on each line but the last is a left parenthesis or comma. * These algorithms ignore whitespace and comments, except that * the function name must be the first thing on the line. * The following constructs will confuse it: - Any other construct that starts at the left margin and follows the above syntax (such as a macro or function call). - Macros that tinker with the syntax of the function header. */ /* Scanning macros */ #define isidchar(ch) (isalnum(ch) || (ch) == '_') #define isidfirstchar(ch) (isalpha(ch) || (ch) == '_') main(argc, argv) int argc; char *argv[]; { FILE *in, *out; #define bufsize 500 /* arbitrary size */ char buf[bufsize]; char *line; switch ( argc ) { default: printf("Usage: ansi2knr input_file [output_file]\n"); exit(0); case 2: out = stdout; break; case 3: out = fopen(argv[2], "w"); if ( out == NULL ) { fprintf(stderr, "Cannot open %s\n", argv[2]); exit(1); } } in = fopen(argv[1], "r"); if ( in == NULL ) { fprintf(stderr, "Cannot open %s\n", argv[1]); exit(1); } fprintf(out, "#line 1 \"%s\"\n", argv[1]); line = buf; while ( fgets(line, (unsigned)(buf + bufsize - line), in) != NULL ) { switch ( test1(buf) ) { case 1: /* a function */ convert1(buf, out); break; case -1: /* maybe the start of a function */ line = buf + strlen(buf); continue; default: /* not a function */ fputs(buf, out); break; } line = buf; } if ( line != buf ) fputs(buf, out); fclose(out); fclose(in); return 0; } /* Skip over space and comments, in either direction. */ char * skipspace(p, dir) register char *p; register int dir; /* 1 for forward, -1 for backward */ { for ( ; ; ) { while ( isspace(*p) ) p += dir; if ( !(*p == '/' && p[dir] == '*') ) break; p += dir; p += dir; while ( !(*p == '*' && p[dir] == '/') ) { if ( *p == 0 ) return p; /* multi-line comment?? */ p += dir; } p += dir; p += dir; } return p; } /* * Write blanks over part of a string. */ void writeblanks(start, end) char *start; char *end; { char *p; for ( p = start; p < end; p++ ) *p = ' '; } /* * Test whether the string in buf is a function definition. * The string may contain and/or end with a newline. * Return as follows: * 0 - definitely not a function definition; * 1 - definitely a function definition; * -1 - may be the beginning of a function definition, * append another line and look again. */ test1(buf) char *buf; { register char *p = buf; char *bend; char *endfn; int contin; if ( !isidfirstchar(*p) ) return 0; /* no name at left margin */ bend = skipspace(buf + strlen(buf) - 1, -1); switch ( *bend ) { case ')': contin = 1; break; case '(': case ',': contin = -1; break; default: return 0; /* not a function */ } while ( isidchar(*p) ) p++; endfn = p; p = skipspace(p, 1); if ( *p++ != '(' ) return 0; /* not a function */ p = skipspace(p, 1); if ( *p == ')' ) return 0; /* no parameters */ /* Check that the apparent function name isn't a keyword. */ /* We only need to check for keywords that could be followed */ /* by a left parenthesis (which, unfortunately, is most of them). */ { static char *words[] = { "asm", "auto", "case", "char", "const", "double", "extern", "float", "for", "if", "int", "long", "register", "return", "short", "signed", "sizeof", "static", "switch", "typedef", "unsigned", "void", "volatile", "while", 0 }; char **key = words; char *kp; int len = endfn - buf; while ( (kp = *key) != 0 ) { if ( strlen(kp) == len && !strncmp(kp, buf, len) ) return 0; /* name is a keyword */ key++; } } return contin; } convert1(buf, out) char *buf; FILE *out; { char *endfn = strchr(buf, '(') + 1; register char *p; char **breaks; unsigned num_breaks = 2; /* for testing */ char **btop; char **bp; char **ap; top: p = endfn; breaks = (char **)malloc(sizeof(char *) * num_breaks * 2); if ( breaks == 0 ) { /* Couldn't allocate break table, give up */ fprintf(stderr, "Unable to allocate break table!\n"); fputs(buf, out); return -1; } btop = breaks + num_breaks * 2 - 2; bp = breaks; /* Parse the argument list */ do { int level = 0; char *end = NULL; if ( bp >= btop ) { /* Filled up break table. */ /* Allocate a bigger one and start over. */ free((char *)breaks); num_breaks <<= 1; goto top; } *bp++ = p; /* Find the end of the argument */ for ( ; end == NULL; p++ ) { switch(*p) { case ',': if ( !level ) end = p; break; case '(': level++; break; case ')': if ( --level < 0 ) end = p; break; case '/': p = skipspace(p, 1) - 1; break; default: ; } } p--; /* back up over terminator */ /* Find the name being declared. */ /* This is complicated because of procedure and */ /* array modifiers. */ for ( ; ; ) { p = skipspace(p - 1, -1); switch ( *p ) { case ']': /* skip array dimension(s) */ case ')': /* skip procedure args OR name */ { int level = 1; while ( level ) switch ( *--p ) { case ']': case ')': level++; break; case '[': case '(': level--; break; case '/': p = skipspace(p, -1) + 1; break; default: ; } } if ( *p == '(' && *skipspace(p + 1, 1) == '*' ) { /* We found the name being declared */ while ( !isidfirstchar(*p) ) p = skipspace(p, 1) + 1; goto found; } break; default: goto found; } } found: if ( *p == '.' && p[-1] == '.' && p[-2] == '.' ) { p++; if ( bp == breaks + 1 ) /* sole argument */ writeblanks(breaks[0], p); else writeblanks(bp[-1] - 1, p); bp--; } else { while ( isidchar(*p) ) p--; *bp++ = p+1; } p = end; } while ( *p++ == ',' ); *bp = p; /* Make a special check for 'void' arglist */ if ( bp == breaks+2 ) { p = skipspace(breaks[0], 1); if ( !strncmp(p, "void", 4) ) { p = skipspace(p+4, 1); if ( p == breaks[2] - 1 ) { bp = breaks; /* yup, pretend arglist is empty */ writeblanks(breaks[0], p + 1); } } } /* Put out the function name */ p = buf; while ( p != endfn ) putc(*p, out), p++; /* Put out the declaration */ for ( ap = breaks+1; ap < bp; ap += 2 ) { p = *ap; while ( isidchar(*p) ) putc(*p, out), p++; if ( ap < bp - 1 ) fputs(", ", out); } fputs(") ", out); /* Put out the argument declarations */ for ( ap = breaks+2; ap <= bp; ap += 2 ) (*ap)[-1] = ';'; fputs(breaks[0], out); free((char *)breaks); return 0; }