1375 lines
38 KiB
C
1375 lines
38 KiB
C
/**
|
|
* Copyright (c) 1985 Sun Microsystems, Inc.
|
|
* Copyright (c) 1980 The Regents of the University of California.
|
|
* Copyright (c) 1976 Board of Trustees of the University of Illinois.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that the above copyright notice and this paragraph are
|
|
* duplicated in all such forms and that any documentation,
|
|
* advertising materials, and other materials related to such
|
|
* distribution and use acknowledge that the software was developed
|
|
* by the University of California, Berkeley, the University of Illinois,
|
|
* Urbana, and Sun Microsystems, Inc. The name of either University
|
|
* or Sun Microsystems may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
*/
|
|
|
|
/* ported to MINIX by: Robert R. Hall <hall@pnet01.cts.com> */
|
|
|
|
#define _POSIX_SOURCE 1
|
|
#define PUBLIC
|
|
#define NAME_SIZE _POSIX_NAME_MAX
|
|
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <limits.h>
|
|
#include "globs.h"
|
|
#include "codes.h"
|
|
#include "proto.h"
|
|
|
|
char *in_name = "Standard Input"; /* will always point to
|
|
name of input file */
|
|
char *out_name = "Standard Output"; /* will always point to
|
|
name of output file */
|
|
char bakfile[60];
|
|
|
|
int main(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
|
|
extern int found_err; /* flag set in diag() on error */
|
|
int dec_ind; /* current indentation for
|
|
declarations */
|
|
int di_stack[20]; /* a stack of structure
|
|
indentation levels */
|
|
int flushed_nl; /* used when buffering up
|
|
comments to remember that a
|
|
newline was passed over */
|
|
int force_nl; /* when true, code must be
|
|
broken */
|
|
int hd_type; /* used to store type of stmt
|
|
for if (...), for (...), etc */
|
|
register int i; /* local loop counter */
|
|
int scase; /* set to true when we see a
|
|
case, so we will know what
|
|
to do with the following
|
|
colon */
|
|
int sp_sw; /* when true, we are in the
|
|
expressin of if(...),
|
|
while(...), etc. */
|
|
int squest; /* when this is positive, we
|
|
have seen a ? without the
|
|
matching : in a <c>?<s>:<s>
|
|
construct */
|
|
register char *t_ptr; /* used for copying tokens */
|
|
int type_code; /* the type of token, returned
|
|
by lexi */
|
|
|
|
int last_else = 0; /* true iff last keyword was an
|
|
else */
|
|
|
|
|
|
/*-----------------------------------------------*\
|
|
| INITIALIZATION |
|
|
\*-----------------------------------------------*/
|
|
|
|
|
|
ps.p_stack[0] = stmt; /* this is the parser's stack */
|
|
ps.last_nl = true; /* this is true if the last
|
|
thing scanned was a newline */
|
|
ps.last_token = semicolon;
|
|
combuf = (char *) malloc(bufsize);
|
|
labbuf = (char *) malloc(bufsize);
|
|
codebuf = (char *) malloc(bufsize);
|
|
l_com = combuf + bufsize - 5;
|
|
l_lab = labbuf + bufsize - 5;
|
|
l_code = codebuf + bufsize - 5;
|
|
combuf[0] = codebuf[0] = labbuf[0] = ' '; /* set up code, label,
|
|
and comment buffers */
|
|
combuf[1] = codebuf[1] = labbuf[1] = '\0';
|
|
ps.else_if = 1; /* Default else-if special
|
|
processing to on */
|
|
s_lab = e_lab = labbuf + 1;
|
|
s_code = e_code = codebuf + 1;
|
|
s_com = e_com = combuf + 1;
|
|
|
|
buf_ptr = buf_end = in_buffer;
|
|
line_no = 1;
|
|
had_eof = ps.in_decl = ps.decl_on_line = break_comma = false;
|
|
sp_sw = force_nl = false;
|
|
ps.in_or_st = false;
|
|
ps.bl_line = true;
|
|
dec_ind = 0;
|
|
di_stack[ps.dec_nest = 0] = 0;
|
|
ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
|
|
|
|
|
|
scase = ps.pcase = false;
|
|
squest = 0;
|
|
sc_end = 0;
|
|
bp_save = 0;
|
|
be_save = 0;
|
|
|
|
output = 0;
|
|
|
|
|
|
|
|
/*--------------------------------------------------*\
|
|
| COMMAND LINE SCAN |
|
|
\*--------------------------------------------------*/
|
|
|
|
#ifdef undef
|
|
max_col = 78; /* -l78 */
|
|
lineup_to_parens = 1; /* -lp */
|
|
ps.ljust_decl = 0; /* -ndj */
|
|
ps.com_ind = 33; /* -c33 */
|
|
star_comment_cont = 1; /* -sc */
|
|
ps.ind_size = 8; /* -i8 */
|
|
verbose = 0;
|
|
ps.decl_indent = 16; /* -di16 */
|
|
ps.indent_parameters = 1; /* -ip */
|
|
ps.decl_com_ind = 0; /* if this is not set to some
|
|
positive value by an arg, we
|
|
will set this equal to
|
|
ps.com_ind */
|
|
btype_2 = 1; /* -br */
|
|
cuddle_else = 1; /* -ce */
|
|
ps.unindent_displace = 0; /* -d0 */
|
|
ps.case_indent = 0; /* -cli0 */
|
|
format_col1_comments = 1; /* -fc1 */
|
|
procnames_start_line = 1; /* -psl */
|
|
proc_calls_space = 0; /* -npcs */
|
|
comment_delimiter_on_blankline = 1; /* -cdb */
|
|
ps.leave_comma = 1; /* -nbc */
|
|
#endif
|
|
|
|
for (i = 1; i < argc; ++i)
|
|
if (strcmp(argv[i], "-npro") == 0)
|
|
break;
|
|
set_defaults();
|
|
if (i >= argc)
|
|
set_profile();
|
|
|
|
for (i = 1; i < argc; ++i)
|
|
{
|
|
|
|
/* look thru args (if any) for changes to defaults */
|
|
if (argv[i][0] != '-')
|
|
{ /* no flag on parameter */
|
|
if (input == 0)
|
|
{ /* we must have the input file */
|
|
in_name = argv[i]; /* remember name of input file */
|
|
input = fopen(in_name, "r");
|
|
if (input == 0)
|
|
{ /* check for open error */
|
|
fprintf(stderr, "indent: can't open %s\n", argv[i]);
|
|
exit(1);
|
|
}
|
|
continue;
|
|
} else if (output == 0)
|
|
{ /* we have the output file */
|
|
out_name = argv[i]; /* remember name of output file */
|
|
if (strcmp(in_name, out_name) == 0)
|
|
{ /* attempt to overwrite the
|
|
file */
|
|
fprintf(stderr, "indent: input and output files must be different\n");
|
|
exit(1);
|
|
}
|
|
output = fopen(out_name, "w");
|
|
if (output == 0)
|
|
{ /* check for create error */
|
|
fprintf(stderr, "indent: can't create %s\n", argv[i]);
|
|
exit(1);
|
|
}
|
|
continue;
|
|
}
|
|
fprintf(stderr, "indent: unknown parameter: %s\n", argv[i]);
|
|
exit(1);
|
|
} else
|
|
set_option(argv[i]);
|
|
} /* end of for */
|
|
if (input == 0)
|
|
{
|
|
fprintf(stderr, "indent: usage: indent file [ outfile ] [ options ]\n");
|
|
exit(1);
|
|
}
|
|
if (output == 0)
|
|
if (troff)
|
|
output = stdout;
|
|
else
|
|
{
|
|
out_name = in_name;
|
|
bakcopy();
|
|
}
|
|
if (ps.com_ind <= 1)
|
|
ps.com_ind = 2; /* dont put normal comments
|
|
before column 2 */
|
|
if (troff)
|
|
{
|
|
if (bodyf.font[0] == 0)
|
|
parsefont(&bodyf, "R");
|
|
if (scomf.font[0] == 0)
|
|
parsefont(&scomf, "I");
|
|
if (blkcomf.font[0] == 0)
|
|
blkcomf = scomf, blkcomf.size += 2;
|
|
if (boxcomf.font[0] == 0)
|
|
boxcomf = blkcomf;
|
|
if (stringf.font[0] == 0)
|
|
parsefont(&stringf, "L");
|
|
if (keywordf.font[0] == 0)
|
|
parsefont(&keywordf, "B");
|
|
writefdef(&bodyf, 'B');
|
|
writefdef(&scomf, 'C');
|
|
writefdef(&blkcomf, 'L');
|
|
writefdef(&boxcomf, 'X');
|
|
writefdef(&stringf, 'S');
|
|
writefdef(&keywordf, 'K');
|
|
}
|
|
if (bk_max_col <= 0)
|
|
bk_max_col = max_col;
|
|
if (ps.decl_com_ind <= 0) /* if not specified by user,
|
|
set this */
|
|
ps.decl_com_ind = ps.ljust_decl ? (ps.com_ind <= 10 ? 2 : ps.com_ind - 8) : ps.com_ind;
|
|
if (continuation_indent == 0)
|
|
continuation_indent = ps.ind_size;
|
|
fill_buffer(); /* get first batch of stuff
|
|
into input buffer */
|
|
|
|
parse(semicolon);
|
|
{
|
|
register char *p = buf_ptr;
|
|
register col = 1;
|
|
|
|
while (1)
|
|
{
|
|
if (*p == ' ')
|
|
col++;
|
|
else if (*p == '\t')
|
|
col = ((col - 1) & ~7) + 9;
|
|
else
|
|
break;
|
|
p++;
|
|
};
|
|
if (col > ps.ind_size)
|
|
ps.ind_level = ps.i_l_follow = col / ps.ind_size;
|
|
}
|
|
if (troff)
|
|
{
|
|
register char *p = in_name, *beg = in_name;
|
|
|
|
while (*p)
|
|
if (*p++ == '/')
|
|
beg = p;
|
|
fprintf(output, ".Fn \"%s\"\n", beg);
|
|
}
|
|
/* START OF MAIN LOOP */
|
|
|
|
while (1)
|
|
{ /* this is the main loop. it
|
|
will go until we reach eof */
|
|
int is_procname;
|
|
|
|
type_code = lexi(); /* lexi reads one token. The
|
|
actual characters read are
|
|
stored in "token". lexi
|
|
returns a code indicating
|
|
the type of token */
|
|
is_procname = ps.procname[0];
|
|
|
|
/* The following code moves everything following an if (), while
|
|
(), else, etc. up to the start of the following stmt to a
|
|
buffer. This allows proper handling of both kinds of brace
|
|
placement. */
|
|
|
|
flushed_nl = false;
|
|
while (ps.search_brace)
|
|
{ /* if we scanned an if(),
|
|
while(), etc., we might need
|
|
to copy stuff into a buffer
|
|
we must loop, copying stuff
|
|
into save_com, until we find
|
|
the start of the stmt which
|
|
follows the if, or whatever */
|
|
switch (type_code)
|
|
{
|
|
case newline:
|
|
++line_no;
|
|
flushed_nl = true;
|
|
case form_feed:
|
|
break; /* form feeds and newlines
|
|
found here will be ignored */
|
|
|
|
case lbrace: /* this is a brace that starts
|
|
the compound stmt */
|
|
if (sc_end == 0)
|
|
{ /* ignore buffering if a
|
|
comment wasnt stored up */
|
|
ps.search_brace = false;
|
|
goto check_type;
|
|
}
|
|
if (btype_2)
|
|
{
|
|
save_com[0] = '{'; /* we either want to put the
|
|
brace right after the if */
|
|
goto sw_buffer; /* go to common code to get out
|
|
of this loop */
|
|
}
|
|
/*
|
|
* Something is buffered up in save_com, and -bl processing is in effect.
|
|
* Add the brace after the comment so it will come out on the next line.
|
|
*/
|
|
flushed_nl = 0; /* comment can start on the same line */
|
|
*sc_end++ = '\n'; /* break line after comment */
|
|
*sc_end++ = '{';
|
|
goto sw_buffer;
|
|
|
|
case comment: /* we have a comment, so we
|
|
must copy it into the buffer */
|
|
if (!flushed_nl || sc_end != 0)
|
|
{
|
|
if (sc_end == 0)
|
|
{ /* if this is the first
|
|
comment, we must set up the
|
|
buffer */
|
|
save_com[0] = save_com[1] = ' ';
|
|
sc_end = &(save_com[2]);
|
|
} else
|
|
{
|
|
*sc_end++ = '\n'; /* add newline between comments */
|
|
*sc_end++ = ' ';
|
|
--line_no;
|
|
}
|
|
*sc_end++ = '/'; /* copy in start of comment */
|
|
*sc_end++ = '*';
|
|
|
|
for (;;)
|
|
{ /* loop until we get to the end
|
|
of the comment */
|
|
*sc_end = *buf_ptr++;
|
|
if (buf_ptr >= buf_end)
|
|
fill_buffer();
|
|
|
|
if (*sc_end++ == '*' && *buf_ptr == '/')
|
|
break; /* we are at end of comment */
|
|
|
|
if (sc_end >= &(save_com[sc_size]))
|
|
{ /* check for temp buffer
|
|
overflow */
|
|
diag(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever.");
|
|
fflush(output);
|
|
exit(1);
|
|
}
|
|
}
|
|
*sc_end++ = '/'; /* add ending slash */
|
|
if (++buf_ptr >= buf_end)/* get past / in buffer */
|
|
fill_buffer();
|
|
break;
|
|
}
|
|
default: /* it is the start of a normal
|
|
statment */
|
|
if (flushed_nl) /* if we flushed a newline,
|
|
make sure it is put back */
|
|
force_nl = true;
|
|
if ((type_code == sp_paren && *token == 'i'
|
|
&& last_else && ps.else_if)
|
|
|| (type_code == sp_nparen && *token == 'e'
|
|
&& e_code != s_code && e_code[-1] == '}'))
|
|
force_nl = false;
|
|
|
|
if (sc_end == 0)
|
|
{ /* ignore buffering if comment
|
|
wasnt saved up */
|
|
ps.search_brace = false;
|
|
goto check_type;
|
|
}
|
|
if (force_nl)
|
|
{ /* if we should insert a nl
|
|
here, put it into the buffer */
|
|
force_nl = false;
|
|
--line_no; /* this will be re-increased
|
|
when the nl is read from the
|
|
buffer */
|
|
*sc_end++ = '\n';
|
|
*sc_end++ = ' ';
|
|
if (verbose && !flushed_nl) /* print error msg if
|
|
the line was not
|
|
already broken */
|
|
diag(0, "Line broken");
|
|
flushed_nl = false;
|
|
}
|
|
for (t_ptr = token; *t_ptr; ++t_ptr)
|
|
*sc_end++ = *t_ptr; /* copy token into temp buffer */
|
|
ps.procname[0] = 0;
|
|
|
|
sw_buffer:
|
|
ps.search_brace = false; /* stop looking for start of
|
|
stmt */
|
|
bp_save = buf_ptr; /* save current input buffer */
|
|
be_save = buf_end;
|
|
buf_ptr = save_com; /* fix so that subsequent calls
|
|
to lexi will take tokens out
|
|
of save_com */
|
|
*sc_end++ = ' '; /* add trailing blank, just in
|
|
case */
|
|
buf_end = sc_end;
|
|
sc_end = 0;
|
|
break;
|
|
} /* end of switch */
|
|
if (type_code != 0) /* we must make this check,
|
|
just in case there was an
|
|
unexpected EOF */
|
|
type_code = lexi(); /* read another token */
|
|
/* if (ps.search_brace) ps.procname[0] = 0; */
|
|
if ((is_procname = ps.procname[0]) && flushed_nl
|
|
&& !proc_str_line && ps.in_decl
|
|
&& type_code == ident)
|
|
flushed_nl = 0;
|
|
} /* end of while (search_brace) */
|
|
last_else = 0;
|
|
check_type:
|
|
if (type_code == 0)
|
|
{ /* we got eof */
|
|
if (s_lab != e_lab || s_code != e_code
|
|
|| s_com != e_com) /* must dump end of line */
|
|
dump_line();
|
|
if (ps.tos > 1) /* check for balanced braces */
|
|
diag(1, "Stuff missing from end of file.");
|
|
|
|
if (verbose)
|
|
{
|
|
printf("There were %d output lines and %d comments\n",
|
|
ps.out_lines, ps.out_coms);
|
|
printf("(Lines with comments)/(Lines with code): %6d\n",
|
|
ps.com_lines / code_lines);
|
|
}
|
|
fflush(output);
|
|
exit(found_err);
|
|
}
|
|
if (
|
|
(type_code != comment) &&
|
|
(type_code != newline) &&
|
|
(type_code != preesc) &&
|
|
(type_code != form_feed))
|
|
{
|
|
if (force_nl &&
|
|
(type_code != semicolon) &&
|
|
(type_code != lbrace || !btype_2))
|
|
{
|
|
/* we should force a broken line here */
|
|
if (verbose && !flushed_nl)
|
|
diag(0, "Line broken");
|
|
flushed_nl = false;
|
|
dump_line();
|
|
ps.want_blank = false; /* dont insert blank at line
|
|
start */
|
|
force_nl = false;
|
|
}
|
|
ps.in_stmt = true; /* turn on flag which causes an
|
|
extra level of indentation.
|
|
this is turned off by a ; or
|
|
'}' */
|
|
if (s_com != e_com)
|
|
{ /* the turkey has embedded a
|
|
comment in a line. fix it */
|
|
*e_code++ = ' ';
|
|
for (t_ptr = s_com; *t_ptr; ++t_ptr)
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = *t_ptr;
|
|
}
|
|
*e_code++ = ' ';
|
|
*e_code = '\0'; /* null terminate code sect */
|
|
ps.want_blank = false;
|
|
e_com = s_com;
|
|
}
|
|
} else if (type_code != comment) /* preserve force_nl thru a
|
|
comment */
|
|
force_nl = false; /* cancel forced newline after
|
|
newline, form feed, etc */
|
|
|
|
|
|
|
|
/*-----------------------------------------------------*\
|
|
| do switch on type of token scanned |
|
|
\*-----------------------------------------------------*/
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
switch (type_code)
|
|
{ /* now, decide what to do with
|
|
the token */
|
|
|
|
case form_feed: /* found a form feed in line */
|
|
ps.use_ff = true; /* a form feed is treated much
|
|
like a newline */
|
|
dump_line();
|
|
ps.want_blank = false;
|
|
break;
|
|
|
|
case newline:
|
|
if (ps.last_token != comma || ps.p_l_follow > 0
|
|
|| !ps.leave_comma || ps.block_init || !break_comma || s_com != e_com)
|
|
{
|
|
dump_line();
|
|
ps.want_blank = false;
|
|
}
|
|
++line_no; /* keep track of input line
|
|
number */
|
|
break;
|
|
|
|
case lparen: /* got a '(' or '[' */
|
|
++ps.p_l_follow; /* count parens to make Healy
|
|
happy */
|
|
if (ps.want_blank && *token != '[' &&
|
|
(ps.last_token != ident || proc_calls_space
|
|
|| (ps.its_a_keyword && (!ps.sizeof_keyword || Bill_Shannon))))
|
|
*e_code++ = ' ';
|
|
if (ps.in_decl && !ps.block_init)
|
|
if (troff && !ps.dumped_decl_indent && !is_procname && ps.last_token == decl)
|
|
{
|
|
ps.dumped_decl_indent = 1;
|
|
sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
|
|
e_code += strlen(e_code);
|
|
} else
|
|
{
|
|
while ((e_code - s_code) < dec_ind)
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = ' ';
|
|
}
|
|
*e_code++ = token[0];
|
|
}
|
|
else
|
|
*e_code++ = token[0];
|
|
ps.paren_indents[ps.p_l_follow - 1] = e_code - s_code;
|
|
if (sp_sw && ps.p_l_follow == 1 && ex_expr_indent
|
|
&& ps.paren_indents[0] < 2 * ps.ind_size)
|
|
ps.paren_indents[0] = 2 * ps.ind_size;
|
|
ps.want_blank = false;
|
|
if (ps.in_or_st && *token == '(' && ps.tos <= 2)
|
|
{
|
|
/* this is a kluge to make sure that declarations will be
|
|
aligned right if proc decl has an explicit type on it,
|
|
i.e. "int a(x) {..." */
|
|
parse(semicolon); /* I said this was a kluge... */
|
|
ps.in_or_st = false; /* turn off flag for structure
|
|
decl or initialization */
|
|
}
|
|
if (ps.sizeof_keyword)
|
|
ps.sizeof_mask |= 1 << ps.p_l_follow;
|
|
break;
|
|
|
|
case rparen: /* got a ')' or ']' */
|
|
if (ps.cast_mask & (1 << ps.p_l_follow) & ~ps.sizeof_mask)
|
|
{
|
|
ps.last_u_d = true;
|
|
ps.cast_mask &= (1 << ps.p_l_follow) - 1;
|
|
}
|
|
ps.sizeof_mask &= (1 << ps.p_l_follow) - 1;
|
|
if (--ps.p_l_follow < 0)
|
|
{
|
|
ps.p_l_follow = 0;
|
|
diag(0, "Extra %c", *token);
|
|
}
|
|
if (e_code == s_code) /* if the paren starts the line */
|
|
ps.paren_level = ps.p_l_follow; /* then indent it */
|
|
|
|
*e_code++ = token[0];
|
|
ps.want_blank = true;
|
|
|
|
if (sp_sw && (ps.p_l_follow == 0))
|
|
{ /* check for end of if (...),
|
|
or some such */
|
|
sp_sw = false;
|
|
force_nl = true; /* must force newline after if */
|
|
ps.last_u_d = true; /* inform lexi that a following
|
|
operator is unary */
|
|
ps.in_stmt = false; /* dont use stmt continuation
|
|
indentation */
|
|
|
|
parse(hd_type); /* let parser worry about if,
|
|
or whatever */
|
|
}
|
|
ps.search_brace = btype_2; /* this should insure that
|
|
constructs such as
|
|
main(){...} and int[]{...}
|
|
have their braces put in the
|
|
right place */
|
|
break;
|
|
|
|
case unary_op: /* this could be any unary
|
|
operation */
|
|
if (ps.want_blank)
|
|
*e_code++ = ' ';
|
|
|
|
if (troff && !ps.dumped_decl_indent && ps.in_decl && !is_procname)
|
|
{
|
|
sprintf(e_code, "\n.Du %dp+\200p \"%s\"\n", dec_ind * 7, token);
|
|
ps.dumped_decl_indent = 1;
|
|
e_code += strlen(e_code);
|
|
} else
|
|
{
|
|
char *res = token;
|
|
|
|
if (ps.in_decl && !ps.block_init)
|
|
{ /* if this is a unary op in a
|
|
declaration, we should
|
|
indent this token */
|
|
for (i = 0; token[i]; ++i); /* find length of token */
|
|
while ((e_code - s_code) < (dec_ind - i))
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = ' '; /* pad it */
|
|
}
|
|
}
|
|
if (troff && token[0] == '-' && token[1] == '>')
|
|
res = "\\(->";
|
|
for (t_ptr = res; *t_ptr; ++t_ptr)
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = *t_ptr;
|
|
}
|
|
}
|
|
ps.want_blank = false;
|
|
break;
|
|
|
|
case binary_op: /* any binary operation */
|
|
if (ps.want_blank)
|
|
*e_code++ = ' ';
|
|
{
|
|
char *res = token;
|
|
|
|
if (troff)
|
|
switch (token[0])
|
|
{
|
|
case '<':
|
|
if (token[1] == '=')
|
|
res = "\\(<=";
|
|
break;
|
|
case '>':
|
|
if (token[1] == '=')
|
|
res = "\\(>=";
|
|
break;
|
|
case '!':
|
|
if (token[1] == '=')
|
|
res = "\\(!=";
|
|
break;
|
|
case '|':
|
|
if (token[1] == '|')
|
|
res = "\\(br\\(br";
|
|
else if (token[1] == 0)
|
|
res = "\\(br";
|
|
break;
|
|
}
|
|
for (t_ptr = res; *t_ptr; ++t_ptr)
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = *t_ptr; /* move the operator */
|
|
}
|
|
}
|
|
ps.want_blank = true;
|
|
break;
|
|
|
|
case postop: /* got a trailing ++ or -- */
|
|
*e_code++ = token[0];
|
|
*e_code++ = token[1];
|
|
ps.want_blank = true;
|
|
break;
|
|
|
|
case question: /* got a ? */
|
|
squest++; /* this will be used when a
|
|
later colon appears so we
|
|
can distinguish the
|
|
<c>?<n>:<n> construct */
|
|
if (ps.want_blank)
|
|
*e_code++ = ' ';
|
|
*e_code++ = '?';
|
|
ps.want_blank = true;
|
|
break;
|
|
|
|
case casestmt: /* got word 'case' or 'default' */
|
|
scase = true; /* so we can process the later
|
|
colon properly */
|
|
goto copy_id;
|
|
|
|
case colon: /* got a ':' */
|
|
if (squest > 0)
|
|
{ /* it is part of the <c>?<n>:
|
|
<n> construct */
|
|
--squest;
|
|
if (ps.want_blank)
|
|
*e_code++ = ' ';
|
|
*e_code++ = ':';
|
|
ps.want_blank = true;
|
|
break;
|
|
}
|
|
if (ps.in_decl)
|
|
{
|
|
*e_code++ = ':';
|
|
ps.want_blank = false;
|
|
break;
|
|
}
|
|
ps.in_stmt = false; /* seeing a label does not
|
|
imply we are in a stmt */
|
|
for (t_ptr = s_code; *t_ptr; ++t_ptr)
|
|
*e_lab++ = *t_ptr; /* turn everything so far into
|
|
a label */
|
|
e_code = s_code;
|
|
*e_lab++ = ':';
|
|
*e_lab++ = ' ';
|
|
*e_lab = '\0';
|
|
|
|
force_nl = ps.pcase = scase; /* ps.pcase will be used by
|
|
dump_line to decide how to
|
|
indent the label. force_nl
|
|
will force a case n: to be
|
|
on a line by itself */
|
|
scase = false;
|
|
ps.want_blank = false;
|
|
break;
|
|
|
|
case semicolon: /* got a ';' */
|
|
ps.in_or_st = false; /* we are not in an
|
|
initialization or structure
|
|
declaration */
|
|
scase = false; /* these will only need
|
|
resetting in a error */
|
|
squest = 0;
|
|
if (ps.last_token == rparen)
|
|
ps.in_par_decl = 0;
|
|
ps.cast_mask = 0;
|
|
ps.sizeof_mask = 0;
|
|
ps.block_init = 0;
|
|
ps.block_init_level = 0;
|
|
ps.just_saw_decl--;
|
|
|
|
if (ps.in_decl && s_code == e_code && !ps.block_init)
|
|
while ((e_code - s_code) < (dec_ind - 1))
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = ' ';
|
|
}
|
|
|
|
ps.in_decl = (ps.dec_nest > 0);/* if we were in a first level
|
|
structure declaration, we
|
|
arent any more */
|
|
|
|
if ((!sp_sw || hd_type != forstmt) && ps.p_l_follow > 0)
|
|
{
|
|
|
|
/* This should be true iff there were unbalanced parens in
|
|
the stmt. It is a bit complicated, because the
|
|
semicolon might be in a for stmt */
|
|
diag(1, "Unbalanced parens");
|
|
ps.p_l_follow = 0;
|
|
if (sp_sw)
|
|
{ /* this is a check for a if,
|
|
while, etc. with unbalanced
|
|
parens */
|
|
sp_sw = false;
|
|
parse(hd_type); /* dont lose the if, or
|
|
whatever */
|
|
}
|
|
}
|
|
*e_code++ = ';';
|
|
ps.want_blank = true;
|
|
ps.in_stmt = (ps.p_l_follow > 0); /* we are no longer in
|
|
the middle of a stmt */
|
|
|
|
if (!sp_sw)
|
|
{ /* if not if for (;;) */
|
|
parse(semicolon); /* let parser know about end of
|
|
stmt */
|
|
force_nl = true; /* force newline after a end of
|
|
stmt */
|
|
}
|
|
break;
|
|
|
|
case lbrace: /* got a '{' */
|
|
ps.in_stmt = false; /* dont indent the {} */
|
|
if (!ps.block_init)
|
|
force_nl = true; /* force other stuff on same
|
|
line as '{' onto new line */
|
|
else if (ps.block_init_level <= 0)
|
|
ps.block_init_level = 1;
|
|
else
|
|
ps.block_init_level++;
|
|
|
|
if (s_code != e_code && !ps.block_init)
|
|
{
|
|
if (!btype_2)
|
|
{
|
|
dump_line();
|
|
ps.want_blank = false;
|
|
} else if (ps.in_par_decl && !ps.in_or_st)
|
|
{
|
|
ps.i_l_follow = 0;
|
|
dump_line();
|
|
ps.want_blank = false;
|
|
}
|
|
}
|
|
if (ps.in_par_decl)
|
|
prefix_blankline_requested = 0;
|
|
|
|
if (ps.p_l_follow > 0)
|
|
{ /* check for preceeding
|
|
unbalanced parens */
|
|
diag(1, "Unbalanced parens");
|
|
ps.p_l_follow = 0;
|
|
if (sp_sw)
|
|
{ /* check for unclosed if, for,
|
|
etc. */
|
|
sp_sw = false;
|
|
parse(hd_type);
|
|
ps.ind_level = ps.i_l_follow;
|
|
}
|
|
}
|
|
if (s_code == e_code)
|
|
ps.ind_stmt = false; /* dont put extra indentation
|
|
on line with '{' */
|
|
if (ps.in_decl && ps.in_or_st)
|
|
{ /* this is either a structure
|
|
declaration or an init */
|
|
di_stack[ps.dec_nest++] = dec_ind;
|
|
/* ? dec_ind = 0; */
|
|
} else
|
|
{
|
|
ps.decl_on_line = false; /* we cant be in the middle of
|
|
a declaration, so dont do
|
|
special indentation of
|
|
comments */
|
|
if (bl_at_proctop
|
|
&& ps.in_par_decl)
|
|
postfix_blankline_requested = 1;
|
|
ps.in_par_decl = 0;
|
|
}
|
|
dec_ind = 0;
|
|
parse(lbrace); /* let parser know about this */
|
|
if (ps.want_blank) /* put a blank before '{' if
|
|
'{' is not at start of line */
|
|
*e_code++ = ' ';
|
|
ps.want_blank = false;
|
|
*e_code++ = '{';
|
|
ps.just_saw_decl = 0;
|
|
break;
|
|
|
|
case rbrace: /* got a '}' */
|
|
if (ps.p_stack[ps.tos] == decl && !ps.block_init) /* semicolons can be
|
|
omitted in
|
|
declarations */
|
|
parse(semicolon);
|
|
if (ps.p_l_follow)
|
|
{ /* check for unclosed if, for,
|
|
else. */
|
|
diag(1, "Unbalanced parens");
|
|
ps.p_l_follow = 0;
|
|
sp_sw = false;
|
|
}
|
|
ps.just_saw_decl = 0;
|
|
ps.block_init_level--;
|
|
if (s_code != e_code && !ps.block_init)
|
|
{ /* '}' must be first on line */
|
|
if (verbose)
|
|
diag(0, "Line broken");
|
|
dump_line();
|
|
}
|
|
*e_code++ = '}';
|
|
ps.want_blank = true;
|
|
ps.in_stmt = ps.ind_stmt = false;
|
|
if (ps.dec_nest > 0)
|
|
{ /* we are in multi-level
|
|
structure declaration */
|
|
dec_ind = di_stack[--ps.dec_nest];
|
|
if (ps.dec_nest == 0 && !ps.in_par_decl)
|
|
ps.just_saw_decl = 2;
|
|
ps.in_decl = true;
|
|
}
|
|
prefix_blankline_requested = 0;
|
|
parse(rbrace); /* let parser know about this */
|
|
ps.search_brace = cuddle_else && ps.p_stack[ps.tos] == ifhead
|
|
&& ps.il[ps.tos] >= ps.ind_level;
|
|
if (ps.tos <= 1 && bl_a_procs && ps.dec_nest <= 0)
|
|
postfix_blankline_requested = 1;
|
|
break;
|
|
|
|
case swstmt: /* got keyword "switch" */
|
|
sp_sw = true;
|
|
hd_type = swstmt; /* keep this for when we have
|
|
seen the expression */
|
|
goto copy_id; /* go move the token into
|
|
buffer */
|
|
|
|
case sp_paren: /* token is if, while, for */
|
|
sp_sw = true; /* the interesting stuff is
|
|
done after the expression is
|
|
scanned */
|
|
hd_type = (*token == 'i' ? ifstmt :
|
|
(*token == 'w' ? whilestmt : forstmt));
|
|
|
|
/* remember the type of header for later use by parser */
|
|
goto copy_id; /* copy the token into line */
|
|
|
|
case sp_nparen: /* got else, do */
|
|
ps.in_stmt = false;
|
|
if (*token == 'e')
|
|
{
|
|
if (e_code != s_code && (!cuddle_else || e_code[-1] != '}'))
|
|
{
|
|
if (verbose)
|
|
diag(0, "Line broken");
|
|
dump_line(); /* make sure this starts a line */
|
|
ps.want_blank = false;
|
|
}
|
|
force_nl = true; /* also, following stuff must
|
|
go onto new line */
|
|
last_else = 1;
|
|
parse(elselit);
|
|
} else
|
|
{
|
|
if (e_code != s_code)
|
|
{ /* make sure this starts a line */
|
|
if (verbose)
|
|
diag(0, "Line broken");
|
|
dump_line();
|
|
ps.want_blank = false;
|
|
}
|
|
force_nl = true; /* also, following stuff must
|
|
go onto new line */
|
|
last_else = 0;
|
|
parse(dolit);
|
|
}
|
|
goto copy_id; /* move the token into line */
|
|
|
|
case decl: /* we have a declaration type
|
|
(int, register, etc.) */
|
|
parse(decl); /* let parser worry about
|
|
indentation */
|
|
if (ps.last_token == rparen && ps.tos <= 1)
|
|
{
|
|
ps.in_par_decl = 1;
|
|
if (s_code != e_code)
|
|
{
|
|
dump_line();
|
|
ps.want_blank = 0;
|
|
}
|
|
}
|
|
if (ps.in_par_decl && ps.indent_parameters && ps.dec_nest == 0)
|
|
{
|
|
ps.ind_level = ps.i_l_follow = 1;
|
|
ps.ind_stmt = 0;
|
|
}
|
|
ps.in_or_st = true; /* this might be a structure or
|
|
initialization declaration */
|
|
ps.in_decl = ps.decl_on_line = true;
|
|
if ( /* !ps.in_or_st && */ ps.dec_nest <= 0)
|
|
ps.just_saw_decl = 2;
|
|
prefix_blankline_requested = 0;
|
|
for (i = 0; token[i++];); /* get length of token */
|
|
|
|
/* dec_ind = e_code - s_code + (ps.decl_indent>i ?
|
|
ps.decl_indent : i); */
|
|
dec_ind = ps.decl_indent > 0 ? ps.decl_indent : i;
|
|
goto copy_id;
|
|
|
|
case ident: /* got an identifier or
|
|
constant */
|
|
if (ps.in_decl)
|
|
{ /* if we are in a declaration,
|
|
we must indent identifier */
|
|
if (ps.want_blank)
|
|
*e_code++ = ' ';
|
|
ps.want_blank = false;
|
|
if (is_procname == 0 || !proc_str_line)
|
|
{
|
|
if (!ps.block_init)
|
|
if (troff && !ps.dumped_decl_indent)
|
|
{
|
|
sprintf(e_code, "\n.De %dp+\200p\n", dec_ind * 7);
|
|
ps.dumped_decl_indent = 1;
|
|
e_code += strlen(e_code);
|
|
} else
|
|
while ((e_code - s_code) < dec_ind)
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = ' ';
|
|
}
|
|
} else
|
|
{
|
|
if (dec_ind && s_code != e_code)
|
|
dump_line();
|
|
dec_ind = 0;
|
|
ps.want_blank = false;
|
|
}
|
|
} else if (sp_sw && ps.p_l_follow == 0)
|
|
{
|
|
sp_sw = false;
|
|
force_nl = true;
|
|
ps.last_u_d = true;
|
|
ps.in_stmt = false;
|
|
parse(hd_type);
|
|
}
|
|
copy_id:
|
|
if (ps.want_blank)
|
|
*e_code++ = ' ';
|
|
if (troff && ps.its_a_keyword)
|
|
{
|
|
e_code = chfont(&bodyf, &keywordf, e_code);
|
|
for (t_ptr = token; *t_ptr; ++t_ptr)
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = keywordf.allcaps && islower(*t_ptr)
|
|
? toupper(*t_ptr) : *t_ptr;
|
|
}
|
|
e_code = chfont(&keywordf, &bodyf, e_code);
|
|
} else
|
|
for (t_ptr = token; *t_ptr; ++t_ptr)
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = *t_ptr;
|
|
}
|
|
ps.want_blank = true;
|
|
break;
|
|
|
|
case period: /* treat a period kind of like
|
|
a binary operation */
|
|
*e_code++ = '.'; /* move the period into line */
|
|
ps.want_blank = false; /* dont put a blank after a
|
|
period */
|
|
break;
|
|
|
|
case comma:
|
|
ps.want_blank = (s_code != e_code); /* only put blank after
|
|
comma if comma does
|
|
not start the line */
|
|
if (ps.in_decl && is_procname == 0 && !ps.block_init)
|
|
while ((e_code - s_code) < (dec_ind - 1))
|
|
{
|
|
if (e_code >= l_code)
|
|
{
|
|
register nsize = l_code - s_code + 400;
|
|
codebuf = (char *) realloc(codebuf, nsize);
|
|
e_code = codebuf + (e_code - s_code) + 1;
|
|
l_code = codebuf + nsize - 5;
|
|
s_code = codebuf + 1;
|
|
}
|
|
*e_code++ = ' ';
|
|
}
|
|
|
|
*e_code++ = ',';
|
|
if (ps.p_l_follow == 0)
|
|
{
|
|
if (ps.block_init_level <= 0)
|
|
ps.block_init = 0;
|
|
if (break_comma && !ps.leave_comma)
|
|
force_nl = true;
|
|
}
|
|
break;
|
|
|
|
case preesc: /* got the character '#' */
|
|
if ((s_com != e_com) ||
|
|
(s_lab != e_lab) ||
|
|
(s_code != e_code))
|
|
dump_line();
|
|
*e_lab++ = '#'; /* move whole line to 'label'
|
|
buffer */
|
|
{
|
|
int in_comment = 0;
|
|
int com_start = 0;
|
|
char quote = 0;
|
|
int com_end = 0;
|
|
|
|
while (*buf_ptr != '\n' || in_comment)
|
|
{
|
|
if (e_lab >= l_lab)
|
|
{
|
|
register nsize = l_lab - s_lab + 400;
|
|
labbuf = (char *) realloc(labbuf, nsize);
|
|
e_lab = labbuf + (e_lab - s_lab) + 1;
|
|
l_lab = labbuf + nsize - 5;
|
|
s_lab = labbuf + 1;
|
|
}
|
|
*e_lab = *buf_ptr++;
|
|
if (buf_ptr >= buf_end)
|
|
fill_buffer();
|
|
switch (*e_lab++)
|
|
{
|
|
case BACKSLASH:
|
|
if (troff)
|
|
*e_lab++ = BACKSLASH;
|
|
if (!in_comment)
|
|
{
|
|
*e_lab++ = *buf_ptr++;
|
|
if (buf_ptr >= buf_end)
|
|
fill_buffer();
|
|
}
|
|
break;
|
|
case '/':
|
|
if (*buf_ptr == '*' && !in_comment && !quote)
|
|
{
|
|
in_comment = 1;
|
|
*e_lab++ = *buf_ptr++;
|
|
com_start = e_lab - s_lab - 2;
|
|
}
|
|
break;
|
|
case '"':
|
|
if (quote == '"')
|
|
quote = 0;
|
|
break;
|
|
case '\'':
|
|
if (quote == '\'')
|
|
quote = 0;
|
|
break;
|
|
case '*':
|
|
if (*buf_ptr == '/' && in_comment)
|
|
{
|
|
in_comment = 0;
|
|
*e_lab++ = *buf_ptr++;
|
|
com_end = e_lab - s_lab;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
|
|
e_lab--;
|
|
if (e_lab - s_lab == com_end && bp_save == 0)
|
|
{ /* comment on preprocessor line */
|
|
if (sc_end == 0) /* if this is the first
|
|
comment, we must set up the
|
|
buffer */
|
|
sc_end = &(save_com[0]);
|
|
else
|
|
{
|
|
*sc_end++ = '\n'; /* add newline between comments */
|
|
*sc_end++ = ' ';
|
|
--line_no;
|
|
}
|
|
memcpy(sc_end, s_lab + com_start, com_end - com_start);
|
|
sc_end += com_end - com_start;
|
|
if (sc_end >= &save_com[sc_size])
|
|
abort();
|
|
e_lab = s_lab + com_start;
|
|
while (e_lab > s_lab && (e_lab[-1] == ' ' || e_lab[-1] == '\t'))
|
|
e_lab--;
|
|
bp_save = buf_ptr; /* save current input buffer */
|
|
be_save = buf_end;
|
|
buf_ptr = save_com; /* fix so that subsequent calls
|
|
to lexi will take tokens out
|
|
of save_com */
|
|
*sc_end++ = ' '; /* add trailing blank, just in
|
|
case */
|
|
buf_end = sc_end;
|
|
sc_end = 0;
|
|
}
|
|
*e_lab = '\0'; /* null terminate line */
|
|
ps.pcase = false;
|
|
}
|
|
|
|
if (strncmp(s_lab, "#if", 3) == 0)
|
|
{
|
|
if (bl_around)
|
|
{
|
|
register c;
|
|
prefix_blankline_requested++;
|
|
while ((c = getc(input)) == '\n');
|
|
ungetc(c, input);
|
|
}
|
|
if (ifdef_level < sizeof state_stack / sizeof state_stack[0])
|
|
{
|
|
match_state[ifdef_level].tos = -1;
|
|
state_stack[ifdef_level++] = ps;
|
|
} else
|
|
diag(1, "#if stack overflow");
|
|
} else if (strncmp(s_lab, "#else", 5) == 0)
|
|
if (ifdef_level <= 0)
|
|
diag(1, "Unmatched #else");
|
|
else
|
|
{
|
|
match_state[ifdef_level - 1] = ps;
|
|
ps = state_stack[ifdef_level - 1];
|
|
}
|
|
else if (strncmp(s_lab, "#endif", 6) == 0)
|
|
{
|
|
if (ifdef_level <= 0)
|
|
diag(1, "Unmatched #endif");
|
|
else
|
|
{
|
|
ifdef_level--;
|
|
|
|
#ifdef undef
|
|
/* This match needs to be more intelligent before the
|
|
message is useful */
|
|
if (match_state[ifdef_level].tos >= 0
|
|
&& bcmp(&ps, &match_state[ifdef_level], sizeof ps))
|
|
diag(0, "Syntactically inconsistant #ifdef alternatives.");
|
|
#endif
|
|
}
|
|
if (bl_around)
|
|
{
|
|
postfix_blankline_requested++;
|
|
n_real_blanklines = 0;
|
|
}
|
|
}
|
|
break; /* subsequent processing of the
|
|
newline character will cause
|
|
the line to be printed */
|
|
|
|
case comment: /* we have gotten a / * this is
|
|
a biggie */
|
|
if (flushed_nl)
|
|
{ /* we should force a broken
|
|
line here */
|
|
flushed_nl = false;
|
|
dump_line();
|
|
ps.want_blank = false; /* dont insert blank at line
|
|
start */
|
|
force_nl = false;
|
|
}
|
|
pr_comment();
|
|
break;
|
|
} /* end of big switch stmt */
|
|
|
|
*e_code = '\0'; /* make sure code section is
|
|
null terminated */
|
|
if (type_code != comment && type_code != newline && type_code != preesc)
|
|
ps.last_token = type_code;
|
|
} /* end of main while (1) loop */
|
|
}
|
|
|
|
/*
|
|
* copy input file to backup file if in_name is /blah/blah/blah/file, then
|
|
* backup file will be ".Bfile" then make the backup file the input and
|
|
* original input file the output
|
|
*/
|
|
void bakcopy()
|
|
{
|
|
int n, bakchn;
|
|
char buff[8 * 1024];
|
|
register char *p;
|
|
|
|
/* construct file name .Bfile */
|
|
for (p = in_name; *p; p++); /* skip to end of string */
|
|
while (p > in_name && *p != '/') /* find last '/' */
|
|
p--;
|
|
if (*p == '/')
|
|
p++;
|
|
sprintf(bakfile, "%s.BAK", p);
|
|
if (strlen(p) >= NAME_SIZE) *bakfile ^= 040; /* toggle char */
|
|
|
|
/* copy in_name to backup file */
|
|
bakchn = creat(bakfile, 0600);
|
|
if (bakchn < 0)
|
|
{
|
|
fprintf(stderr, "indent: can't create backup file \"%s\"\n", bakfile);
|
|
exit(1);
|
|
}
|
|
while (n = read(fileno(input), buff, sizeof buff))
|
|
if (write(bakchn, buff, n) != n)
|
|
{
|
|
fprintf(stderr, "indent: error writing backup file \"%s\"\n",
|
|
bakfile);
|
|
exit(1);
|
|
}
|
|
if (n < 0)
|
|
{
|
|
fprintf(stderr, "indent: error reading input file \"%s\"\n", in_name);
|
|
exit(1);
|
|
}
|
|
close(bakchn);
|
|
fclose(input);
|
|
|
|
/* re-open backup file as the input file */
|
|
input = fopen(bakfile, "r");
|
|
if (input == 0)
|
|
{
|
|
fprintf(stderr, "indent: can't re-open backup file\n");
|
|
exit(1);
|
|
}
|
|
/* now the original input file will be the output */
|
|
output = fopen(in_name, "w");
|
|
if (output == 0)
|
|
{
|
|
fprintf(stderr, "indent: can't create %s\n", in_name);
|
|
unlink(bakfile);
|
|
exit(1);
|
|
}
|
|
}
|