Usenet 1994 January/usenetsourcesnewsgroupsinfomagicjanuary1994.iso/sources/unix/volume18/indent/part03

Internet Message Format | 1989-03-20 | 36.3 KB

Subject:  v18i051:  Indent, C reformatting program, Part03/03
Newsgroups: comp.sources.unix
Sender: sources
Approved: [e-mail]

Submitted-by: Ozan Yigit <[e-mail]>
Posting-number: Volume 18, Issue 51
Archive-name: indent/part03

[  In case it's not clear, this program contains the original version,
   plus the changes UCB and Sun have made.  Thanks to them for putting
   their work into the freely-redistributable category.  If you have
   indent on your systems, replace it with this version.  --r$  ]

#! /bin/sh
# This is a shell archive.  Remove anything before this line, then unpack
# it by saving it into a file and typing "sh file".  To overwrite existing
# files, type "sh file -c".  You can also feed this as standard input via
# unshar, or by typing "sh <file", e.g..  If this archive is complete, you
# will see the following message at the end:
#        "End of archive 3 (of 3)."
# Contents:  indent/indent.c
# Wrapped by oz@yunexus on Thu Mar  9 18:11:06 1989
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
if test -f 'indent/indent.c' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'indent/indent.c'\"
else
echo shar: Extracting \"'indent/indent.c'\" \(34171 characters\)
sed "s/^X//" >'indent/indent.c' <<'END_OF_FILE'
X/*
X * Copyright (c) 1985 Sun Microsystems, Inc.
X * Copyright (c) 1980 The Regents of the University of California.
X * Copyright (c) 1976 Board of Trustees of the University of Illinois.
X * All rights reserved.
X *
X * Redistribution and use in source and binary forms are permitted
X * provided that the above copyright notice and this paragraph are
X * duplicated in all such forms and that any documentation,
X * advertising materials, and other materials related to such
X * distribution and use acknowledge that the software was developed
X * by the University of California, Berkeley, the University of Illinois,
X * Urbana, and Sun Microsystems, Inc.  The name of either University
X * or Sun Microsystems may not be used to endorse or promote products
X * derived from this software without specific prior written permission.
X * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
X * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
X * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
X */
X
X#ifndef lint
Xchar copyright[] =
X"@(#) Copyright (c) 1985 Sun Microsystems, Inc.\n\
X @(#) Copyright (c) 1980 The Regents of the University of California.\n\
X @(#) Copyright (c) 1976 Board of Trustees of the University of Illinois.\n\
X All rights reserved.\n";
X#endif /* not lint */
X
X#ifndef lint
Xstatic char sccsid[] = "@(#)indent.c    5.11 (Berkeley) 9/15/88";
X#endif /* not lint */
X
X#include "indent_globs.h"
X#include "indent_codes.h"
X#include <sys/param.h>
X#include <ctype.h>
X
Xchar       *in_name = "Standard Input";    /* will always point to name of input
X                     * file */
Xchar       *out_name = "Standard Output";    /* will always point to name
X                         * of output file */
Xchar        bakfile[MAXPATHLEN] = "";
X
Xmain(argc, argv)
X    int         argc;
X    char      **argv;
X{
X
X    extern int  found_err;    /* flag set in diag() on error */
X    int         dec_ind;    /* current indentation for declarations */
X    int         di_stack[20];    /* a stack of structure indentation levels */
X    int         flushed_nl;    /* used when buffering up comments to remember
X                 * that a newline was passed over */
X    int         force_nl;    /* when true, code must be broken */
X    int         hd_type;    /* used to store type of stmt for if (...),
X                 * for (...), etc */
X    register int i;        /* local loop counter */
X    int         scase;        /* set to true when we see a case, so we will
X                 * know what to do with the following colon */
X    int         sp_sw;        /* when true, we are in the expressin of
X                 * if(...), while(...), etc. */
X    int         squest;        /* when this is positive, we have seen a ?
X                 * without the matching : in a <c>?<s>:<s>
X                 * construct */
X    register char *t_ptr;    /* used for copying tokens */
X    int         type_code;    /* the type of token, returned by lexi */
X
X    int         last_else = 0;    /* true iff last keyword was an else */
X
X
X    /*-----------------------------------------------*\
X    |              INITIALIZATION              |
X    \*-----------------------------------------------*/
X
X
X    ps.p_stack[0] = stmt;    /* this is the parser's stack */
X    ps.last_nl = true;        /* this is true if the last thing scanned was
X                 * a newline */
X    ps.last_token = semicolon;
X    combuf = (char *) malloc(bufsize);
X    labbuf = (char *) malloc(bufsize);
X    codebuf = (char *) malloc(bufsize);
X    l_com = combuf + bufsize - 5;
X    l_lab = labbuf + bufsize - 5;
X    l_code = codebuf + bufsize - 5;
X    combuf[0] = codebuf[0] = labbuf[0] = ' ';    /* set up code, label, and
X                         * comment buffers */
X    combuf[1] = codebuf[1] = labbuf[1] = '\0';
X    ps.else_if = 1;        /* Default else-if special processing to on */
X    s_lab = e_lab = labbuf + 1;
X    s_code = e_code = codebuf + 1;
X    s_com = e_com = combuf + 1;
X
X    buf_ptr = buf_end = in_buffer;
X    line_no = 1;
X    had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
X    sp_sw = force_nl = false;
X    ps.in_or_st = false;
X    ps.bl_line = true;
X    dec_ind = 0;
X    di_stack[ps.dec_nest = 0] = 0;
X    ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
X
X
X    scase = ps.pcase = false;
X    squest = 0;
X    sc_end = 0;
X    bp_save = 0;
X    be_save = 0;
X
X    output = 0;
X
X
X
X    /*--------------------------------------------------*\
X    |           COMMAND LINE SCAN         |
X    \*--------------------------------------------------*/
X
X#ifdef undef
X    max_col = 78;        /* -l78 */
X    lineup_to_parens = 1;    /* -lp */
X    ps.ljust_decl = 0;        /* -ndj */
X    ps.com_ind = 33;        /* -c33 */
X    star_comment_cont = 1;    /* -sc */
X    ps.ind_size = 8;        /* -i8 */
X    verbose = 0;
X    ps.decl_indent = 16;    /* -di16 */
X    ps.indent_parameters = 1;    /* -ip */
X    ps.decl_com_ind = 0;    /* if this is not set to some positive value
X                 * by an arg, we will set this equal to
X                 * ps.com_ind */
X    btype_2 = 1;        /* -br */
X    cuddle_else = 1;        /* -ce */
X    ps.unindent_displace = 0;    /* -d0 */
X    ps.case_indent = 0;        /* -cli0 */
X    format_col1_comments = 1;    /* -fc1 */
X    procnames_start_line = 1;    /* -psl */
X    proc_calls_space = 0;    /* -npcs */
X    comment_delimiter_on_blankline = 1;    /* -cdb */
X    ps.leave_comma = 1;        /* -nbc */
X#endif
X
X    for (i = 1; i < argc; ++i)
X    if (strcmp(argv[i], "-npro") == 0)
X        break;
X    set_defaults();
X    if (i >= argc)
X    set_profile();
X
X    for (i = 1; i < argc; ++i) {
X
X    /*
X     * look thru args (if any) for changes to defaults
X     */
X    if (argv[i][0] != '-') {/* no flag on parameter */
X        if (input == 0) {    /* we must have the input file */
X        in_name = argv[i];    /* remember name of input file */
X        input = fopen(in_name, "r");
X        if (input == 0) {    /* check for open error */
X            fprintf(stderr, "indent: can't open %s\n", argv[i]);
X            exit(1);
X        }
X        continue;
X        }
X        else if (output == 0) {    /* we have the output file */
X        out_name = argv[i];    /* remember name of output file */
X        if (strcmp(in_name, out_name) == 0) {    /* attempt to overwrite
X                             * the file */
X            fprintf(stderr, "indent: input and output files must be different\n");
X            exit(1);
X        }
X        output = fopen(out_name, "w");
X        if (output == 0) {    /* check for create error */
X            fprintf(stderr, "indent: can't create %s\n", argv[i]);
X            exit(1);
X        }
X        continue;
X        }
X        fprintf(stderr, "indent: unknown parameter: %s\n", argv[i]);
X        exit(1);
X    }
X    else
X        set_option(argv[i]);
X    }                /* end of for */
X    if (input == 0) {
X    fprintf(stderr, "indent: usage: indent file [ outfile ] [ options ]\n");
X    exit(1);
X    }
X    if (output == 0)
X    if (troff)
X        output = stdout;
X    else {
X        out_name = in_name;
X        bakcopy();
X    }
X    if (ps.com_ind <= 1)
X    ps.com_ind = 2;        /* dont put normal comments before column 2 */
X    if (troff) {
X    if (bodyf.font[0] == 0)
X        parsefont(&bodyf, "R");
X    if (scomf.font[0] == 0)
X        parsefont(&scomf, "I");
X    if (blkcomf.font[0] == 0)
X        blkcomf = scomf, blkcomf.size += 2;
X    if (boxcomf.font[0] == 0)
X        boxcomf = blkcomf;
X    if (stringf.font[0] == 0)
X        parsefont(&stringf, "L");
X    if (keywordf.font[0] == 0)
X        parsefont(&keywordf, "B");
X    writefdef(&bodyf, 'B');
X    writefdef(&scomf, 'C');
X    writefdef(&blkcomf, 'L');
X    writefdef(&boxcomf, 'X');
X    writefdef(&stringf, 'S');
X    writefdef(&keywordf, 'K');
X    }
X    if (block_comment_max_col <= 0)
X    block_comment_max_col = max_col;
X    if (ps.decl_com_ind <= 0)    /* if not specified by user, set this */
X    ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
X    if (continuation_indent == 0)
X    continuation_indent = ps.ind_size;
X    fill_buffer();        /* get first batch of stuff into input buffer */
X
X    parse(semicolon);
X    {
X    register char *p = buf_ptr;
X    register    col = 1;
X
X    while (1) {
X        if (*p == ' ')
X        col++;
X        else if (*p == '\t')
X        col = ((col - 1) & ~7) + 9;
X        else
X        break;
X        p++;
X    };
X    if (col > ps.ind_size)
X        ps.ind_level = ps.i_l_follow = col / ps.ind_size;
X    }
X    if (troff) {
X    register char *p = in_name,
X               *beg = in_name;
X
X    while (*p)
X        if (*p++ == '/')
X        beg = p;
X    fprintf(output, ".Fn \"%s\"\n", beg);
X    }
X    /*
X     * START OF MAIN LOOP
X     */
X
X    while (1) {            /* this is the main loop.  it will go until we
X                 * reach eof */
X    int         is_procname;
X
X    type_code = lexi();    /* lexi reads one token.  The actual
X                 * characters read are stored in "token". lexi
X                 * returns a code indicating the type of token */
X    is_procname = ps.procname[0];
X
X    /*
X     * The following code moves everything following an if (), while (),
X     * else, etc. up to the start of the following stmt to a buffer. This
X     * allows proper handling of both kinds of brace placement.
X     */
X
X    flushed_nl = false;
X    while (ps.search_brace) {    /* if we scanned an if(), while(),
X                     * etc., we might need to copy stuff
X                     * into a buffer we must loop, copying
X                     * stuff into save_com, until we find
X                     * the start of the stmt which follows
X                     * the if, or whatever */
X        switch (type_code) {
X        case newline:
X        ++line_no;
X        flushed_nl = true;
X        case form_feed:
X        break;        /* form feeds and newlines found here will be
X                 * ignored */
X
X        case lbrace:    /* this is a brace that starts the compound
X                 * stmt */
X        if (sc_end == 0) {    /* ignore buffering if a comment wasnt
X                     * stored up */
X            ps.search_brace = false;
X            goto check_type;
X        }
X        if (btype_2) {
X            save_com[0] = '{';    /* we either want to put the brace
X                     * right after the if */
X            goto sw_buffer;    /* go to common code to get out of
X                     * this loop */
X        }
X        case comment:    /* we have a comment, so we must copy it into
X                 * the buffer */
X        if (!flushed_nl || sc_end != 0) {
X            if (sc_end == 0) {    /* if this is the first comment, we
X                     * must set up the buffer */
X            save_com[0] = save_com[1] = ' ';
X            sc_end = &(save_com[2]);
X            }
X            else {
X            *sc_end++ = '\n';    /* add newline between
X                         * comments */
X            *sc_end++ = ' ';
X            --line_no;
X            }
X            *sc_end++ = '/';    /* copy in start of comment */
X            *sc_end++ = '*';
X
X            for (;;) {    /* loop until we get to the end of the comment */
X            *sc_end = *buf_ptr++;
X            if (buf_ptr >= buf_end)
X                fill_buffer();
X
X            if (*sc_end++ == '*' && *buf_ptr == '/')
X                break;    /* we are at end of comment */
X
X            if (sc_end >= &(save_com[sc_size])) {    /* check for temp buffer
X                                 * overflow */
X                diag(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever.");
X                fflush(output);
X                exit(1);
X            }
X            }
X            *sc_end++ = '/';    /* add ending slash */
X            if (++buf_ptr >= buf_end)    /* get past / in buffer */
X            fill_buffer();
X            break;
X        }
X        default:        /* it is the start of a normal statment */
X        if (flushed_nl)    /* if we flushed a newline, make sure it is
X                 * put back */
X            force_nl = true;
X        if (type_code == sp_paren && *token == 'i'
X            && last_else && ps.else_if
X            || type_code == sp_nparen && *token == 'e'
X            && e_code != s_code && e_code[-1] == '}')
X            force_nl = false;
X
X        if (sc_end == 0) {    /* ignore buffering if comment wasnt
X                     * saved up */
X            ps.search_brace = false;
X            goto check_type;
X        }
X        if (force_nl) {    /* if we should insert a nl here, put it into
X                 * the buffer */
X            force_nl = false;
X            --line_no;    /* this will be re-increased when the nl is
X                 * read from the buffer */
X            *sc_end++ = '\n';
X            *sc_end++ = ' ';
X            if (verbose && !flushed_nl)    /* print error msg if the line
X                         * was not already broken */
X            diag(0, "Line broken");
X            flushed_nl = false;
X        }
X        for (t_ptr = token; *t_ptr; ++t_ptr)
X            *sc_end++ = *t_ptr;    /* copy token into temp buffer */
X        ps.procname[0] = 0;
X
X    sw_buffer:
X        ps.search_brace = false;    /* stop looking for start of
X                         * stmt */
X        bp_save = buf_ptr;    /* save current input buffer */
X        be_save = buf_end;
X        buf_ptr = save_com;    /* fix so that subsequent calls to
X                     * lexi will take tokens out of
X                     * save_com */
X        *sc_end++ = ' ';/* add trailing blank, just in case */
X        buf_end = sc_end;
X        sc_end = 0;
X        break;
X        }            /* end of switch */
X        if (type_code != 0)    /* we must make this check, just in case there
X                 * was an unexpected EOF */
X        type_code = lexi();    /* read another token */
X        /* if (ps.search_brace) ps.procname[0] = 0; */
X        if ((is_procname = ps.procname[0]) && flushed_nl
X            && !procnames_start_line && ps.in_decl
X            && type_code == ident)
X        flushed_nl = 0;
X    }            /* end of while (search_brace) */
X    last_else = 0;
Xcheck_type:
X    if (type_code == 0) {    /* we got eof */
X        if (s_lab != e_lab || s_code != e_code
X            || s_com != e_com)    /* must dump end of line */
X        dump_line();
X        if (ps.tos > 1)    /* check for balanced braces */
X        diag(1, "Stuff missing from end of file.");
X
X        if (verbose) {
X        printf("There were %d output lines and %d comments\n",
X               ps.out_lines, ps.out_coms);
X        printf("(Lines with comments)/(Lines with code): %6.3f\n",
X               (1.0 * ps.com_lines) / code_lines);
X        }
X        fflush(output);
X        exit(found_err);
X    }
X    if (
X        (type_code != comment) &&
X        (type_code != newline) &&
X        (type_code != preesc) &&
X        (type_code != form_feed)) {
X        if (force_nl &&
X            (type_code != semicolon) &&
X            (type_code != lbrace || !btype_2)) {
X        /* we should force a broken line here */
X        if (verbose && !flushed_nl)
X            diag(0, "Line broken");
X        flushed_nl = false;
X        dump_line();
X        ps.want_blank = false;    /* dont insert blank at line start */
X        force_nl = false;
X        }
X        ps.in_stmt = true;    /* turn on flag which causes an extra level of
X                 * indentation. this is turned off by a ; or
X                 * '}' */
X        if (s_com != e_com) {    /* the turkey has embedded a comment
X                     * in a line. fix it */
X        *e_code++ = ' ';
X        for (t_ptr = s_com; *t_ptr; ++t_ptr) {
X            check_size(code);
X            *e_code++ = *t_ptr;
X        }
X        *e_code++ = ' ';
X        *e_code = '\0';    /* null terminate code sect */
X        ps.want_blank = false;
X        e_com = s_com;
X        }
X    }
X    else if (type_code != comment)    /* preserve force_nl thru a comment */
X        force_nl = false;    /* cancel forced newline after newline, form
X                 * feed, etc */
X
X
X
X    /*-----------------------------------------------------*\
X    |       do switch on type of token scanned        |
X    \*-----------------------------------------------------*/
X    check_size(code);
X    switch (type_code) {    /* now, decide what to do with the token */
X
X    case form_feed:    /* found a form feed in line */
X        ps.use_ff = true;    /* a form feed is treated much like a newline */
X        dump_line();
X        ps.want_blank = false;
X        break;
X
X    case newline:
X        if (ps.last_token != comma || ps.p_l_follow > 0
X            || !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com) {
X        dump_line();
X        ps.want_blank = false;
X        }
X        ++line_no;        /* keep track of input line number */
X        break;
X
X    case lparen:        /* got a '(' or '[' */
X        ++ps.p_l_follow;    /* count parens to make Healy happy */
X        if (ps.want_blank && *token != '[' &&
X            (ps.last_token != ident || proc_calls_space
X          || (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon))))
X        *e_code++ = ' ';
X        if (ps.in_decl && !ps.block_init)
X        if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl) {
X            ps.dumped_decl_indent = 1;
X            sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
X            e_code += strlen(e_code);
X        }
X        else {
X            while ((e_code - s_code) < dec_ind) {
X            check_size(code);
X            *e_code++ = ' ';
X            }
X            *e_code++ = token[0];
X        }
X        else
X        *e_code++ = token[0];
X        ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
X        if (sp_sw && ps.p_l_follow == 1 && extra_expression_indent
X            && ps.paren_indents[0] < 2 * ps.ind_size)
X        ps.paren_indents[0] = 2 * ps.ind_size;
X        ps.want_blank = false;
X        if (ps.in_or_st && *token == '(' && ps.tos <= 2) {
X        /*
X         * this is a kluge to make sure that declarations will be
X         * aligned right if proc decl has an explicit type on it, i.e.
X         * "int a(x) {..."
X         */
X        parse(semicolon);    /* I said this was a kluge... */
X        ps.in_or_st = false;    /* turn off flag for structure decl or
X                     * initialization */
X        }
X        if (ps.sizeof_keyword)
X        ps.sizeof_mask |= 1 << ps.p_l_follow;
X        break;
X
X    case rparen:        /* got a ')' or ']' */
X        if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask) {
X        ps.last_u_d = true;
X        ps.cast_mask &= (1 << ps.p_l_follow) - 1;
X        }
X        ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
X        if (--ps.p_l_follow < 0) {
X        ps.p_l_follow = 0;
X        diag(0, "Extra %c", *token);
X        }
X        if (e_code == s_code)    /* if the paren starts the line */
X        ps.paren_level = ps.p_l_follow;    /* then indent it */
X
X        *e_code++ = token[0];
X        ps.want_blank = true;
X
X        if (sp_sw && (ps.p_l_follow == 0)) {    /* check for end of if
X                             * (...), or some such */
X        sp_sw = false;
X        force_nl = true;/* must force newline after if */
X        ps.last_u_d = true;    /* inform lexi that a following
X                     * operator is unary */
X        ps.in_stmt = false;    /* dont use stmt continuation
X                     * indentation */
X
X        parse(hd_type);    /* let parser worry about if, or whatever */
X        }
X        ps.search_brace = btype_2;    /* this should insure that constructs
X                     * such as main(){...} and int[]{...}
X                     * have their braces put in the right
X                     * place */
X        break;
X
X    case unary_op:        /* this could be any unary operation */
X        if (ps.want_blank)
X        *e_code++ = ' ';
X
X        if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname) {
X        sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
X        ps.dumped_decl_indent = 1;
X        e_code += strlen(e_code);
X        }
X        else {
X        char       *res = token;
X
X        if (ps.in_decl && !ps.block_init) {    /* if this is a unary op
X                             * in a declaration, we
X                             * should indent this
X                             * token */
X            for (i = 0; token[i]; ++i);    /* find length of token */
X            while ((e_code - s_code) < (dec_ind - i)) {
X            check_size(code);
X            *e_code++ = ' ';    /* pad it */
X            }
X        }
X        if (troff && token[0] == '-' && token[1] == '>')
X            res = "\\(->";
X        for (t_ptr = res; *t_ptr; ++t_ptr) {
X            check_size(code);
X            *e_code++ = *t_ptr;
X        }
X        }
X        ps.want_blank = false;
X        break;
X
X    case binary_op:    /* any binary operation */
X    do_binary:
X        if (ps.want_blank)
X        *e_code++ = ' ';
X        {
X        char       *res = token;
X
X        if (troff)
X            switch (token[0]) {
X            case '<':
X            if (token[1] == '=')
X                res = "\\(<=";
X            break;
X            case '>':
X            if (token[1] == '=')
X                res = "\\(>=";
X            break;
X            case '!':
X            if (token[1] == '=')
X                res = "\\(!=";
X            break;
X            case '|':
X            if (token[1] == '|')
X                res = "\\(br\\(br";
X            else if (token[1] == 0)
X                res = "\\(br";
X            break;
X            }
X        for (t_ptr = res; *t_ptr; ++t_ptr) {
X            check_size(code);
X            *e_code++ = *t_ptr;    /* move the operator */
X        }
X        }
X        ps.want_blank = true;
X        break;
X
X    case postop:        /* got a trailing ++ or -- */
X        *e_code++ = token[0];
X        *e_code++ = token[1];
X        ps.want_blank = true;
X        break;
X
X    case question:        /* got a ? */
X        squest++;        /* this will be used when a later colon
X                 * appears so we can distinguish the
X                 * <c>?<n>:<n> construct */
X        if (ps.want_blank)
X        *e_code++ = ' ';
X        *e_code++ = '?';
X        ps.want_blank = true;
X        break;
X
X    case casestmt:        /* got word 'case' or 'default' */
X        scase = true;    /* so we can process the later colon properly */
X        goto copy_id;
X
X    case colon:        /* got a ':' */
X        if (squest > 0) {    /* it is part of the <c>?<n>: <n> construct */
X        --squest;
X        if (ps.want_blank)
X            *e_code++ = ' ';
X        *e_code++ = ':';
X        ps.want_blank = true;
X        break;
X        }
X        if (ps.in_decl) {
X        *e_code++ = ':';
X        ps.want_blank = false;
X        break;
X        }
X        ps.in_stmt = false;    /* seeing a label does not imply we are in a
X                 * stmt */
X        for (t_ptr = s_code; *t_ptr; ++t_ptr)
X        *e_lab++ = *t_ptr;    /* turn everything so far into a label */
X        e_code = s_code;
X        *e_lab++ = ':';
X        *e_lab++ = ' ';
X        *e_lab = '\0';
X
X        force_nl = ps.pcase = scase;    /* ps.pcase will be used by
X                         * dump_line to decide how to
X                         * indent the label. force_nl
X                         * will force a case n: to be
X                         * on a line by itself */
X        scase = false;
X        ps.want_blank = false;
X        break;
X
X    case semicolon:    /* got a ';' */
X        ps.in_or_st = false;/* we are not in an initialization or
X                 * structure declaration */
X        scase = false;    /* these will only need resetting in a error */
X        squest = 0;
X        if (ps.last_token == rparen)
X        ps.in_parameter_declaration = 0;
X        ps.cast_mask = 0;
X        ps.sizeof_mask = 0;
X        ps.block_init = 0;
X        ps.block_init_level = 0;
X        ps.just_saw_decl--;
X
X        if (ps.in_decl && s_code == e_code && !ps.block_init)
X        while ((e_code - s_code) < (dec_ind - 1)) {
X            check_size(code);
X            *e_code++ = ' ';
X        }
X
X        ps.in_decl = (ps.dec_nest > 0);    /* if we were in a first level
X                         * structure declaration, we
X                         * arent any more */
X
X        if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0) {
X
X        /*
X         * This should be true iff there were unbalanced parens in the
X         * stmt.  It is a bit complicated, because the semicolon might
X         * be in a for stmt
X         */
X        diag(1, "Unbalanced parens");
X        ps.p_l_follow = 0;
X        if (sp_sw) {    /* this is a check for a if, while, etc. with
X                 * unbalanced parens */
X            sp_sw = false;
X            parse(hd_type);    /* dont lose the if, or whatever */
X        }
X        }
X        *e_code++ = ';';
X        ps.want_blank = true;
X        ps.in_stmt = (ps.p_l_follow > 0);    /* we are no longer in the
X                         * middle of a stmt */
X
X        if (!sp_sw) {    /* if not if for (;;) */
X        parse(semicolon);    /* let parser know about end of stmt */
X        force_nl = true;/* force newline after a end of stmt */
X        }
X        break;
X
X    case lbrace:        /* got a '{' */
X        ps.in_stmt = false;    /* dont indent the {} */
X        if (!ps.block_init)
X        force_nl = true;/* force other stuff on same line as '{' onto
X                 * new line */
X        else if (ps.block_init_level <= 0)
X        ps.block_init_level = 1;
X        else
X        ps.block_init_level++;
X
X        if (s_code != e_code && !ps.block_init) {
X        if (!btype_2) {
X            dump_line();
X            ps.want_blank = false;
X        }
X        else if (ps.in_parameter_declaration && !ps.in_or_st) {
X            ps.i_l_follow = 0;
X            dump_line();
X            ps.want_blank = false;
X        }
X        }
X        if (ps.in_parameter_declaration)
X        prefix_blankline_requested = 0;
X
X        if (ps.p_l_follow > 0) {    /* check for preceeding unbalanced
X                     * parens */
X        diag(1, "Unbalanced parens");
X        ps.p_l_follow = 0;
X        if (sp_sw) {    /* check for unclosed if, for, etc. */
X            sp_sw = false;
X            parse(hd_type);
X            ps.ind_level = ps.i_l_follow;
X        }
X        }
X        if (s_code == e_code)
X        ps.ind_stmt = false;    /* dont put extra indentation on line
X                     * with '{' */
X        if (ps.in_decl && ps.in_or_st) {    /* this is either a structure
X                         * declaration or an init */
X        di_stack[ps.dec_nest++] = dec_ind;
X        /* ?        dec_ind = 0; */
X        }
X        else {
X        ps.decl_on_line = false;    /* we cant be in the middle of
X                         * a declaration, so dont do
X                         * special indentation of
X                         * comments */
X        if (blanklines_after_declarations_at_proctop
X            && ps.in_parameter_declaration)
X            postfix_blankline_requested = 1;
X        ps.in_parameter_declaration = 0;
X        }
X        dec_ind = 0;
X        parse(lbrace);    /* let parser know about this */
X        if (ps.want_blank)    /* put a blank before '{' if '{' is not at
X                 * start of line */
X        *e_code++ = ' ';
X        ps.want_blank = false;
X        *e_code++ = '{';
X        ps.just_saw_decl = 0;
X        break;
X
X    case rbrace:        /* got a '}' */
X        if (ps.p_stack[ps.tos] == decl && !ps.block_init)    /* semicolons can be
X                                 * omitted in
X                                 * declarations */
X        parse(semicolon);
X        if (ps.p_l_follow) {/* check for unclosed if, for, else. */
X        diag(1, "Unbalanced parens");
X        ps.p_l_follow = 0;
X        sp_sw = false;
X        }
X        ps.just_saw_decl = 0;
X        ps.block_init_level--;
X        if (s_code != e_code && !ps.block_init) {    /* '}' must be first on
X                             * line */
X        if (verbose)
X            diag(0, "Line broken");
X        dump_line();
X        }
X        *e_code++ = '}';
X        ps.want_blank = true;
X        ps.in_stmt = ps.ind_stmt = false;
X        if (ps.dec_nest > 0) {    /* we are in multi-level structure
X                     * declaration */
X        dec_ind = di_stack[--ps.dec_nest];
X        if (ps.dec_nest == 0 && !ps.in_parameter_declaration)
X            ps.just_saw_decl = 2;
X        ps.in_decl = true;
X        }
X        prefix_blankline_requested = 0;
X        parse(rbrace);    /* let parser know about this */
X        ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
X        && ps.il[ps.tos] >= ps.ind_level;
X        if (ps.tos <= 1 && blanklines_after_procs && ps.dec_nest <= 0)
X        postfix_blankline_requested = 1;
X        break;
X
X    case swstmt:        /* got keyword "switch" */
X        sp_sw = true;
X        hd_type = swstmt;    /* keep this for when we have seen the
X                 * expression */
X        goto copy_id;    /* go move the token into buffer */
X
X    case sp_paren:        /* token is if, while, for */
X        sp_sw = true;    /* the interesting stuff is done after the
X                 * expression is scanned */
X        hd_type = (*token == 'i' ? ifstmt :
X               (*token == 'w' ? whilestmt : forstmt));
X
X        /*
X         * remember the type of header for later use by parser
X         */
X        goto copy_id;    /* copy the token into line */
X
X    case sp_nparen:    /* got else, do */
X        ps.in_stmt = false;
X        if (*token == 'e') {
X        if (e_code != s_code && (!cuddle_else || e_code[-1] != '}')) {
X            if (verbose)
X            diag(0, "Line broken");
X            dump_line();/* make sure this starts a line */
X            ps.want_blank = false;
X        }
X        force_nl = true;/* also, following stuff must go onto new line */
X        last_else = 1;
X        parse(elselit);
X        }
X        else {
X        if (e_code != s_code) {    /* make sure this starts a line */
X            if (verbose)
X            diag(0, "Line broken");
X            dump_line();
X            ps.want_blank = false;
X        }
X        force_nl = true;/* also, following stuff must go onto new line */
X        last_else = 0;
X        parse(dolit);
X        }
X        goto copy_id;    /* move the token into line */
X
X    case decl:        /* we have a declaration type (int, register,
X                 * etc.) */
X        parse(decl);    /* let parser worry about indentation */
X        if (ps.last_token == rparen && ps.tos <= 1) {
X        ps.in_parameter_declaration = 1;
X        if (s_code != e_code) {
X            dump_line();
X            ps.want_blank = 0;
X        }
X        }
X        if (ps.in_parameter_declaration && ps.indent_parameters && ps.dec_nest == 0) {
X        ps.ind_level = ps.i_l_follow = 1;
X        ps.ind_stmt = 0;
X        }
X        ps.in_or_st = true;    /* this might be a structure or initialization
X                 * declaration */
X        ps.in_decl = ps.decl_on_line = true;
X        if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
X        ps.just_saw_decl = 2;
X        prefix_blankline_requested = 0;
X        for (i = 0; token[i++];);    /* get length of token */
X
X        /*
X         * dec_ind = e_code - s_code + (ps.decl_indent>i ? ps.decl_indent
X         * : i);
X         */
X        dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
X        goto copy_id;
X
X    case ident:        /* got an identifier or constant */
X        if (ps.in_decl) {    /* if we are in a declaration, we must indent
X                 * identifier */
X        if (ps.want_blank)
X            *e_code++ = ' ';
X        ps.want_blank = false;
X        if (is_procname == 0 || !procnames_start_line) {
X            if (!ps.block_init)
X            if (troff && !ps.dumped_decl_indent) {
X                sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
X                ps.dumped_decl_indent = 1;
X                e_code += strlen(e_code);
X            }
X            else
X                while ((e_code - s_code) < dec_ind) {
X                check_size(code);
X                *e_code++ = ' ';
X                }
X        }
X        else {
X            if (dec_ind && s_code != e_code)
X            dump_line();
X            dec_ind = 0;
X            ps.want_blank = false;
X        }
X        }
X        else if (sp_sw && ps.p_l_follow == 0) {
X        sp_sw = false;
X        force_nl = true;
X        ps.last_u_d = true;
X        ps.in_stmt = false;
X        parse(hd_type);
X        }
X    copy_id:
X        if (ps.want_blank)
X        *e_code++ = ' ';
X        if (troff && ps.its_a_keyword) {
X        e_code = chfont(&bodyf, &keywordf, e_code);
X        for (t_ptr = token; *t_ptr; ++t_ptr) {
X            check_size(code);
X            *e_code++ = keywordf.allcaps && islower(*t_ptr)
X            ? toupper(*t_ptr) : *t_ptr;
X        }
X        e_code = chfont(&keywordf, &bodyf, e_code);
X        }
X        else
X        for (t_ptr = token; *t_ptr; ++t_ptr) {
X            check_size(code);
X            *e_code++ = *t_ptr;
X        }
X        ps.want_blank = true;
X        break;
X
X    case period:        /* treat a period kind of like a binary
X                 * operation */
X        *e_code++ = '.';    /* move the period into line */
X        ps.want_blank = false;    /* dont put a blank after a period */
X        break;
X
X    case comma:
X        ps.want_blank = (s_code != e_code);    /* only put blank after comma
X                         * if comma does not start the
X                         * line */
X        if (ps.in_decl && is_procname == 0 && !ps.block_init)
X        while ((e_code - s_code) < (dec_ind - 1)) {
X            check_size(code);
X            *e_code++ = ' ';
X        }
X
X        *e_code++ = ',';
X        if (ps.p_l_follow == 0) {
X        if (ps.block_init_level <= 0)
X            ps.block_init = 0;
X        if (break_comma && !ps.leave_comma)
X            force_nl = true;
X        }
X        break;
X
X    case preesc:        /* got the character '#' */
X        if ((s_com != e_com) ||
X            (s_lab != e_lab) ||
X            (s_code != e_code))
X        dump_line();
X        *e_lab++ = '#';    /* move whole line to 'label' buffer */
X        {
X        int         in_comment = 0;
X        int         com_start = 0;
X        char        quote = 0;
X        int         com_end = 0;
X
X        while (*buf_ptr != '\n' || in_comment) {
X            check_size(lab);
X            *e_lab = *buf_ptr++;
X            if (buf_ptr >= buf_end)
X            fill_buffer();
X            switch (*e_lab++) {
X            case BACKSLASH:
X            if (troff)
X                *e_lab++ = BACKSLASH;
X            if (!in_comment) {
X                *e_lab++ = *buf_ptr++;
X                if (buf_ptr >= buf_end)
X                fill_buffer();
X            }
X            break;
X            case '/':
X            if (*buf_ptr == '*' && !in_comment && !quote) {
X                in_comment = 1;
X                *e_lab++ = *buf_ptr++;
X                com_start = e_lab - s_lab - 2;
X            }
X            break;
X            case '"':
X            if (quote == '"')
X                quote = 0;
X            break;
X            case '\'':
X            if (quote == '\'')
X                quote = 0;
X            break;
X            case '*':
X            if (*buf_ptr == '/' && in_comment) {
X                in_comment = 0;
X                *e_lab++ = *buf_ptr++;
X                com_end = e_lab - s_lab;
X            }
X            break;
X            }
X        }
X
X        while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
X            e_lab--;
X        if (e_lab - s_lab == com_end && bp_save == 0) {    /* comment on
X                                 * preprocessor line */
X            if (sc_end == 0)    /* if this is the first comment, we
X                     * must set up the buffer */
X            sc_end = &(save_com[0]);
X            else {
X            *sc_end++ = '\n';    /* add newline between
X                         * comments */
X            *sc_end++ = ' ';
X            --line_no;
X            }
X            bcopy(s_lab + com_start, sc_end, com_end - com_start);
X            sc_end += com_end - com_start;
X            if (sc_end >= &save_com[sc_size])
X            abort();
X            e_lab = s_lab + com_start;
X            while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
X            e_lab--;
X            bp_save = buf_ptr;    /* save current input buffer */
X            be_save = buf_end;
X            buf_ptr = save_com;    /* fix so that subsequent calls to
X                     * lexi will take tokens out of
X                     * save_com */
X            *sc_end++ = ' ';    /* add trailing blank, just in case */
X            buf_end = sc_end;
X            sc_end = 0;
X        }
X        *e_lab = '\0';    /* null terminate line */
X        ps.pcase = false;
X        }
X
X        if (strncmp(s_lab, "#if", 3) == 0) {
X        if (blanklines_around_conditional_compilation) {
X            register    c;
X            prefix_blankline_requested++;
X            while ((c = getc(input)) == '\n');
X            ungetc(c, input);
X        }
X        if (ifdef_level < sizeof state_stack / sizeof state_stack[0]) {
X            match_state[ifdef_level].tos = -1;
X            state_stack[ifdef_level++] = ps;
X        }
X        else
X            diag(1, "#if stack overflow");
X        }
X        else if (strncmp(s_lab, "#else", 5) == 0)
X        if (ifdef_level <= 0)
X            diag(1, "Unmatched #else");
X        else {
X            match_state[ifdef_level - 1] = ps;
X            ps = state_stack[ifdef_level - 1];
X        }
X        else if (strncmp(s_lab, "#endif", 6) == 0) {
X        if (ifdef_level <= 0)
X            diag(1, "Unmatched #endif");
X        else {
X            ifdef_level--;
X
X#ifdef undef
X            /*
X             * This match needs to be more intelligent before the
X             * message is useful
X             */
X            if (match_state[ifdef_level].tos >= 0
X              && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
X            diag(0, "Syntactically inconsistant #ifdef alternatives.");
X#endif
X        }
X        if (blanklines_around_conditional_compilation) {
X            postfix_blankline_requested++;
X            n_real_blanklines = 0;
X        }
X        }
X        break;        /* subsequent processing of the newline
X                 * character will cause the line to be printed */
X
X    case comment:        /* we have gotten a /*  this is a biggie */
X    proc_comment:
X        if (flushed_nl) {    /* we should force a broken line here */
X        flushed_nl = false;
X        dump_line();
X        ps.want_blank = false;    /* dont insert blank at line start */
X        force_nl = false;
X        }
X        pr_comment();
X        break;
X    }            /* end of big switch stmt */
X
X    *e_code = '\0';        /* make sure code section is null terminated */
X    if (type_code != comment && type_code != newline && type_code != preesc)
X        ps.last_token = type_code;
X    }                /* end of main while (1) loop */
X};
X
X/*
X * copy input file to backup file if in_name is /blah/blah/blah/file, then
X * backup file will be ".Bfile" then make the backup file the input and
X * original input file the output
X */
Xbakcopy()
X{
X    int         n,
X                bakchn;
X    char        buff[8 * 1024];
X    register char *p;
X
X    /* construct file name .Bfile */
X    for (p = in_name; *p; p++);    /* skip to end of string */
X    while (p > in_name && *p != '/')    /* find last '/' */
X    p--;
X    if (*p == '/')
X    p++;
X    sprintf(bakfile, "%s.BAK", p);
X
X    /* copy in_name to backup file */
X    bakchn = creat(bakfile, 0600);
X    if (bakchn < 0) {
X    fprintf(stderr, "indent: can't create backup file \"%s\"\n", bakfile);
X    exit(1);
X    }
X    while (n = read(fileno(input), buff, sizeof buff))
X    if (write(bakchn, buff, n) != n) {
X        fprintf(stderr, "indent: error writing backup file \"%s\"\n",
X            bakfile);
X        exit(1);
X    }
X    if (n < 0) {
X    fprintf(stderr, "indent: error reading input file \"%s\"\n", in_name);
X    exit(1);
X    }
X    close(bakchn);
X    fclose(input);
X
X    /* re-open backup file as the input file */
X    input = fopen(bakfile, "r");
X    if (input == 0) {
X    fprintf(stderr, "indent: can't re-open backup file\n");
X    exit(1);
X    }
X    /* now the original input file will be the output */
X    output = fopen(in_name, "w");
X    if (output == 0) {
X    fprintf(stderr, "indent: can't create %s\n", in_name);
X    unlink(bakfile);
X    exit(1);
X    }
X}
END_OF_FILE
if test 34171 -ne `wc -c <'indent/indent.c'`; then
    echo shar: \"'indent/indent.c'\" unpacked with wrong size!
fi
# end of 'indent/indent.c'
fi
echo shar: End of archive 3 \(of 3\).
cp /dev/null ark3isdone
MISSING=""
for I in 1 2 3 ; do
    if test ! -f ark${I}isdone ; then
    MISSING="${MISSING} ${I}"
    fi
done
if test "${MISSING}" = "" ; then
    echo You have unpacked all 3 archives.
    rm -f ark[1-9]isdone
else
    echo You still need to unpack the following archives:
    echo "        " ${MISSING}
fi
##  End of shell archive.
exit 0