rsalz@uunet.uu.net (Rich Salz) (03/22/89)
Submitted-by: Ozan Yigit <oz@nexus.yorku.ca>
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
--
Please send comp.sources.unix-related mail to rsalz@uunet.uu.net.