/* pr -- convert text files for printing.
Copyright (C) 1988, 1991 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Author: Pete TerMaat. */
/* Things to watch: Sys V screws up on ...
pr -n -3 -s: /usr/dict/words
pr -m -o10 -n /usr/dict/words{,,,}
pr -6 -a -n -o5 /usr/dict/words
Keep a things_to_do list of functions to call when we know we have
something to print. Cleaner than current series of checks.
Improve the printing of control prefixes.
+PAGE Begin output at page PAGE of the output.
-COLUMN Produce output that is COLUMN columns wide and print
-a Print columns across rather than down. The input
-b Balance columns on the last page.
-c Print unprintable characters as control prefixes.
Control-g is printed as ^G.
-d Double space the output.
-e[c[k]] Expand tabs to spaces on input. Optional argument C
is the input tab character. (Default is `\t'.) Optional
argument K is the input tab character's width. (Default is 8.)
-f Use formfeeds instead of newlines to separate pages.
-h header Replace the filename in the header with the string HEADER.
-i[c[k]] Replace spaces with tabs on output. Optional argument
C is the output tab character. (Default is `\t'.) Optional
argument K is the output tab character's width. (Default
-l lines Set the page length to LINES. Default is 66.
-m Print files in parallel.
-n[c[k]] Precede each column with a line number.
(With parallel files, precede each line with a line
number.) Optional argument C is the character to print
after each number. (Default `\t'.) Optional argument
K is the number of digits per line number. (Default 5.)
-o offset Offset each line with a margin OFFSET spaces wide.
Total page width is the size of this offset plus the
-r Ignore files that can't be opened.
-s[c] Separate each line with a character. Optional argument C is
the character to be used. Default is `\t'.
-t Do not print headers or footers.
-v Print unprintable characters as escape sequences.
-w width Set the page width to WIDTH characters. */
static int char_to_clump ();
static int print_page ();
static int print_stored ();
static int skip_to_page ();
static void getoptarg ();
static void print_files ();
static void init_header ();
static void init_store_cols ();
static void store_columns ();
static void store_char ();
static void read_rest_of_line ();
static void print_char ();
/* Used with start_position in the struct COLUMN described below.
If start_position == ANYWHERE, we aren't truncating columns and
can begin printing a column anywhere. Otherwise we must pad to
the horizontal position start_position. */
/* Each column has one of these structures allocated for it.
If we're only dealing with one file, fp is the same for all
The general strategy is to spend time setting up these column
structures (storing columns if necessary), after which printing
is a matter of flitting from column to column and calling
Parallel files, single files printing across in multiple
columns, and single files printing down in multiple columns all
fit the same printing loop.
print_func Function used to print lines in this column.
If we're storing this column it will be
print_stored(), Otherwise it will be read_line().
char_func Function used to process characters in this column.
If we're storing this column it will be store_char(),
otherwise it will be print_char().
current_line Index of the current entry in line_vector, which
contains the index of the first character of the
lines_stored Number of lines in this column which are stored in
lines_to_print If we're storing this column, lines_to_print is
the number of stored_lines which remain to be
printed. Otherwise it is the number of lines
we can print without exceeding lines_per_body.
start_position The horizontal position we want to be in before we
print the first character in this column.
numbered True means precede this column with a line number. */
FILE *fp
; /* Input stream for this column. */
char *name
; /* File name. */
ON_HOLD
, /* Hit a form feed. */ } status
; /* Status of the file pointer. */
int (*print_func
) (); /* Func to print lines in this col. */
void (*char_func
) (); /* Func to print/store chars in this col. */
int current_line
; /* Index of current place in line_vector. */
int lines_stored
; /* Number of lines stored in buff. */
int lines_to_print
; /* No. lines stored or space left on page. */
int start_position
; /* Horizontal position of first char. */
typedef struct COLUMN COLUMN
;
#define NULLCOL (COLUMN *)0
/* The name under which this program was invoked. */
/* All of the columns to print. */
static COLUMN
*column_vector
;
/* When printing a single file in multiple downward columns,
we store the leftmost columns contiguously in buff.
To print a line from buff, get the index of the first char
from line_vector[i], and print up to line_vector[i + 1]. */
/* Index of the position in buff where the next character
/* The number of characters in buff.
Used for allocation of buff and to detect overflow of buff. */
static int buff_allocated
;
/* Array of indices into buff.
Each entry is an index of the first character of a line.
This is used when storing lines to facilitate shuffling when
we do column balancing on the last page. */
/* Array of horizonal positions.
For each line in line_vector, end_vector[line] is the horizontal
position we are in after printing that line. We keep track of this
so that we know how much we need to pad to prepare for the next
/* (-m) True means we're printing multiple files in parallel. */
static int parallel_files
= FALSE
;
/* (-[0-9]+) True means we're given an option explicitly specifying
number of columns. Used to detect when this option is used with -m. */
static int explicit_columns
= FALSE
;
/* (-t) True means we're printing headers and footers. */
static int extremities
= TRUE
;
/* True means we need to print a header as soon as we know we've got input
static int print_a_header
;
/* (-h) True means we're using the standard header rather than a
customized one specified by the -h flag. */
static int standard_header
= TRUE
;
/* (-f) True means use formfeeds instead of newlines to separate pages. */
static int use_form_feed
= FALSE
;
/* True means we have read the standard input. */
static int have_read_stdin
= FALSE
;
/* True means the -a flag has been given. */
static int print_across_flag
= FALSE
;
/* True means we're printing one file in multiple (>1) downward columns. */
static int storing_columns
= TRUE
;
/* (-b) True means balance columns on the last page as Sys V does. */
static int balance_columns
= FALSE
;
/* (-l) Number of lines on a page, including header and footer lines. */
static int lines_per_page
= 66;
/* Number of lines in the header and footer can be reset to 0 using
static int lines_per_header
= 5;
static int lines_per_body
;
static int lines_per_footer
= 5;
/* (-w) Width in characters of the page. Does not include the width of
static int chars_per_line
= 72;
/* Number of characters in a column. Based on the gutter and page widths. */
static int chars_per_column
;
/* (-e) True means convert tabs to spaces on input. */
static int untabify_input
= FALSE
;
/* (-e) The input tab character. */
static char input_tab_char
= '\t';
/* (-e) Tabstops are at chars_per_tab, 2*chars_per_tab, 3*chars_per_tab, ...
where the leftmost column is 1. */
static int chars_per_input_tab
= 8;
/* (-i) True means convert spaces to tabs on output. */
static int tabify_output
= FALSE
;
/* (-i) The output tab character. */
static char output_tab_char
= '\t';
/* (-i) The width of the output tab. */
static int chars_per_output_tab
= 8;
/* Keeps track of pending white space. When we hit a nonspace
character after some whitespace, we print whitespace, tabbing
if necessary to get to output_position + spaces_not_printed. */
static int spaces_not_printed
;
/* Number of spaces between columns (though tabs can be used when possible to
use up the equivalent amount of space). Not sure if this is worth making
a flag for. BSD uses 0, Sys V uses 1. Sys V looks better. */
static int chars_per_gutter
= 1;
/* (-o) Number of spaces in the left margin (tabs used when possible). */
static int chars_per_margin
= 0;
/* Position where the next character will fall.
Leftmost position is 0 + chars_per_margin.
Rightmost position is chars_per_margin + chars_per_line - 1.
This is important for converting spaces to tabs on output. */
static int output_position
;
/* Horizontal position relative to the current file.
(output_position depends on where we are on the page;
input_position depends on where we are in the file.)
Important for converting tabs to spaces on input. */
static int input_position
;
/* Count number of failed opens so we can exit with non-zero
status if there were any. */
static int failed_opens
= 0;
/* The horizontal position we'll be at after printing a tab character
of width c_ from the position h_. */
#define pos_after_tab(c_, h_) h_ - h_ % c_ + c_
/* The number of spaces taken up if we print a tab character with width
#define tab_width(c_, h_) - h_ % c_ + c_
/* (-NNN) Number of columns of text to print. */
/* (+NNN) Page number on which to begin printing. */
static int first_page_number
= 1;
/* Number of files open (not closed, not on hold). */
static int files_ready_to_read
= 0;
/* Current page number. Displayed in header. */
/* Current line number. Displayed when -n flag is specified.
When printing files in parallel (-m flag), line numbering is as follows:
When printing files across (-a flag), ...
Otherwise, line numbering is as follows:
/* (-n) True means lines should be preceded by numbers. */
static int numbered_lines
= FALSE
;
/* (-n) Character which follows each line number. */
static char number_separator
= '\t';
/* (-n) Width in characters of a line number. */
static int chars_per_number
= 5;
/* Used when widening the first column to accommodate numbers -- only
needed when printing files in parallel. Includes width of both the
number and the number_separator. */
/* Buffer sprintf uses to format a line number. */
static char *number_buff
;
/* (-v) True means unprintable characters are printed as escape sequences.
control-g becomes \007. */
static int use_esc_sequence
= FALSE
;
/* (-c) True means unprintable characters are printed as control prefixes.
static int use_cntrl_prefix
= FALSE
;
/* (-d) True means output is double spaced. */
static int double_space
= FALSE
;
/* Number of files opened initially in init_files. Should be 1
unless we're printing multiple files in parallel. */
static int total_files
= 0;
/* (-r) True means don't complain if we can't open a file. */
static int ignore_failed_opens
= FALSE
;
/* (-s) True means we separate columns with a specified character. */
static int use_column_separator
= FALSE
;
/* Character used to separate columns if the the -s flag has been specified. */
static char column_separator
= '\t';
/* Number of separator characters waiting to be printed as soon as we
know that we have any input remaining to be printed. */
static int separators_not_printed
;
/* Position we need to pad to, as soon as we know that we have input
remaining to be printed. */
static int padding_not_printed
;
/* True means we should pad the end of the page. Remains false until we
know we have a page to print. */
static int pad_vertically
;
/* (-h) String of characters used in place of the filename in the header. */
static char *custom_header
;
/* String containing the date, filename or custom header, and "Page ". */
/* True means we truncate lines longer than chars_per_column. */
static int truncate_lines
= FALSE
;
/* If non-zero, display usage information and exit. */
/* If non-zero, print the version on standard error. */
static struct option
const long_options
[] =
{"help", no_argument
, &flag_help
, 1},
{"version", no_argument
, &flag_version
, 1},
/* Return the number of columns that have either an open file or
for (q
= column_vector
, i
= 0; i
< columns
; ++q
, ++i
)
(storing_columns
&& q
->lines_stored
> 0 && q
->lines_to_print
> 0))
file_names
= (char **) xmalloc ((argc
- 1) * sizeof (char *)); c
= getopt_long (argc
, argv
, "-0123456789abcde::fFh:i::l:mn::o:rs::tvw:",
long_options
, (int *) 0); if (c
== 1) /* Non-option argument. */
error (0, 0, "`+' requires a numeric argument");
first_page_number
= atoi (s
); file_names
[n_files
++] = optarg
; accum
= accum
* 10 + c
- '0'; case 0: /* getopt long option */
print_across_flag
= TRUE
; getoptarg (optarg
, 'e', &input_tab_char
,
/* Could check tab width > 0. */
getoptarg (optarg
, 'i', &output_tab_char
,
/* Could check tab width > 0. */
lines_per_page
= atoi (optarg
); getoptarg (optarg
, 'n', &number_separator
,
chars_per_margin
= atoi (optarg
); ignore_failed_opens
= TRUE
; use_column_separator
= TRUE
;%s: extra characters in the argument to the `-s' option: `%s'\n",
chars_per_line
= atoi (optarg
); fprintf (stderr
, "%s\n", version_string
);
if (parallel_files
&& explicit_columns
)
"Cannot specify number of columns when printing in parallel.");
if (parallel_files
&& print_across_flag
)
"Cannot specify both printing across and printing in parallel.");
for ( ; optind
< argc
; optind
++)
file_names
[n_files
++] = argv
[optind
]; /* No file arguments specified; read from standard input. */
print_files (0, (char **) 0);
print_files (n_files
, file_names
);
for (i
=0; i
<n_files
; i
++)
print_files (1, &file_names
[i
]);
if (have_read_stdin
&& fclose (stdin
) == EOF
)
error (1, errno
, "standard input");
if (ferror (stdout
) || fclose (stdout
) == EOF
)
error (1, errno
, "write error");
/* Parse options of the form -scNNN.
Example: -nck, where 'n' is the option, c is the optional number
separator, and k is the optional width of the field used when printing
getoptarg (arg
, switch_char
, character
, number
)
char *arg
, switch_char
, *character
;
%s: extra characters in the argument to the `-%c' option: `%s'\n",
program_name
, switch_char
, arg
);/* Set parameters related to formatting. */
init_parameters (number_of_files
)
int chars_used_by_number
= 0;
lines_per_body
= lines_per_page
- lines_per_header
- lines_per_footer
; if (extremities
== FALSE
)
lines_per_body
= lines_per_page
; lines_per_body
= lines_per_body
/ 2; /* If input is stdin, cannot print parallel files. BSD dumps core
if (number_of_files
== 0)
columns
= number_of_files
; /* Tabification is assumed for multiple columns. */
if (!use_column_separator
)
if (number_separator
== input_tab_char
)
number_width
= chars_per_number
+ tab_width (chars_per_input_tab
,
(chars_per_margin
+ chars_per_number
));
number_width
= chars_per_number
+ 1; /* The number is part of the column width unless we are
printing files in parallel. */
chars_used_by_number
= number_width
; chars_per_column
= (chars_per_line
- chars_used_by_number
- (columns
- 1) * chars_per_gutter
) / columns
;
if (chars_per_column
< 1)
error (1, 0, "page width too narrow");
if (number_buff
!= (char *) 0)
xmalloc (2 * chars_per_number
* sizeof (char));
/* Pick the maximum between the tab width and the width of an
if (clump_buff
!= (int *) 0)
clump_buff
= (int *) xmalloc ((chars_per_input_tab
> 4 ? chars_per_input_tab
: 4) * sizeof (int));
/* Open the necessary files,
maintaining a COLUMN structure for each column.
With multiple files, each column p has a different p->fp.
With single files, each column p has the same p->fp.
Return 1 if (number_of_files > 0) and no files can be opened,
init_fps (number_of_files
, av
)
if (column_vector
!= NULLCOL
)
free ((char *) column_vector
);
column_vector
= (COLUMN
*) xmalloc (columns
* sizeof (COLUMN
)); files_left
= number_of_files
; for (p
= column_vector
; files_left
--; ++p
, ++av
)
if (open_file (*av
, p
) == 0)
if (open_file (*av
, p
) == 0)
init_header (*av
, fileno (p
->fp
));
p
->name
= "standard input"; for (i
= columns
- 1, ++p
; i
; --i
, ++p
)
files_ready_to_read
= total_files
;/* Determine print_func and char_func, the functions
used by each column for printing and/or storing.
Determine the horizontal position desired when we begin
printing a column (p->start_position). */
if (use_column_separator
)
/* When numbering lines of parallel files, we enlarge the
first column to accomodate the number. Looks better than
if (parallel_files
&& numbered_lines
)
h_next
= h
+ chars_per_column
+ number_width
; h_next
= h
+ chars_per_column
; /* This loop takes care of all but the rightmost column. */
for (p
= column_vector
, i
= 1; i
< columns
; ++p
, ++i
)
if (storing_columns
) /* One file, multi columns down. */
p
->char_func
= store_char
; p
->print_func
= print_stored
; /* One file, multi columns across; or parallel files. */
p
->char_func
= print_char
; p
->print_func
= read_line
; /* Number only the first column when printing files in
p
->numbered
= numbered_lines
&& (!parallel_files
|| i
== 1); /* If we're using separators, all start_positions are
ANYWHERE, except the first column's start_position when
if (use_column_separator
)
h
= h_next
+ chars_per_gutter
; h_next
= h
+ chars_per_column
; Doesn't need to be stored unless we intend to balance
columns on the last page. */
if (storing_columns
&& balance_columns
)
p
->char_func
= store_char
; p
->print_func
= print_stored
; p
->char_func
= print_char
; p
->print_func
= read_line
; p
->numbered
= numbered_lines
&& (!parallel_files
|| i
== 1);/* Open a file. Return nonzero if successful, zero if failed. */
p
->name
= "standard input"; p
->fp
= fopen (name
, "r"); if (!ignore_failed_opens
)
error (0, errno
, "%s", name
);
If we aren't dealing with multiple files in parallel, we change
the status of all columns in the column list to reflect the close. */
error (1, errno
, "%s", p
->name
);
if (p
->fp
!= stdin
&& fclose (p
->fp
) == EOF
)
error (1, errno
, "%s", p
->name
);
for (q
= column_vector
, i
= columns
; i
; ++q
, --i
)
if (q
->lines_stored
== 0)
/* Put a file on hold until we start a new page,
since we've hit a form feed.
If we aren't dealing with parallel files, we must change the
status of all columns in the column list. */
for (q
= column_vector
, i
= columns
; i
; ++q
, --i
)
/* Undo hold_file -- go through the column list and change any
ON_HOLD columns to OPEN. Used at the end of each page. */
for (p
= column_vector
; i
; --i
, ++p
)
if (p
->status
== ON_HOLD
)
/* Print a single file, or multiple files in parallel.
Set up the list of columns, opening the necessary files.
Allocate space for storing columns, if necessary.
Skip to first_page_number, if user has asked to skip leading pages.
Determine which functions are appropriate to store/print lines
print_files (number_of_files
, av
)
init_parameters (number_of_files
);
if (init_fps (number_of_files
, av
))
if (first_page_number
> 1)
if (!skip_to_page (first_page_number
))
page_number
= first_page_number
;/* Generous estimate of number of characters taken up by "Jun 7 00:08 " and
#define CHARS_FOR_DATE_AND_PAGE 50
/* Initialize header information.
If DESC is non-negative, it is a file descriptor open to
Allocate space for a header string,
Determine the time, insert file name or user-specified string.
It might be nice to have a "blank headers" option, since
pr -h "" still prints the date and page number. */
init_header (filename
, desc
)
/* If parallel files or standard input, use current time. */
if (desc
< 0 || !strcmp (filename
, "-") || fstat (desc
, &st
))
st
.st_mtime
= time ((time_t *) 0); t
= ctime (&st
.st_mtime
); t
[16] = '\0'; /* Mark end of month and time string. */ t
[24] = '\0'; /* Mark end of year string. */ middle
= standard_header
? f
: custom_header
; chars_per_header
= strlen (middle
) + CHARS_FOR_DATE_AND_PAGE
+ 1; if (header
!= (char *) 0)
header
= (char *) xmalloc (chars_per_header
* sizeof (char)); sprintf (header
, "%s %s %s Page", &t
[4], &t
[20], middle
);
/* Set things up for printing a page
Scan through the columns ...
Determine which are ready to print
(i.e., which have lines stored or open files)
Set p->lines_to_print appropriately
(to p->lines_stored if we're storing, or lines_per_body
if we're reading straight from the file)
Keep track of this total so we know when to stop printing */
for (j
= columns
- 1, p
= column_vector
; j
; --j
, ++p
)
p
->lines_to_print
= p
->lines_stored
; p
->lines_to_print
= p
->lines_stored
; /* Since we're not balancing columns, we don't need to store
the rightmost column. Read it straight from the file. */
p
->lines_to_print
= lines_per_body
; for (j
= columns
, p
= column_vector
; j
; --j
, ++p
)
p
->lines_to_print
= lines_per_body
; As long as there are lines left on the page and columns ready to print,
Scan across the column list
if the column has stored lines or the file is open
pad to the appropriate spot
pad the remainder of the page with \n or \f as requested
reset the status of all files -- any files which where on hold because
of formfeeds are now put back into the lineup. */
/* Used as an accumulator (with | operator) of successive values of
pad_vertically. The trick is to set pad_vertically
to zero before each run through the inner loop, then after that
loop, it tells us whether a line was actually printed (whether a
newline needs to be output -- or two for double spacing). But those
values have to be accumulated (in pv) so we can invoke pad_down
properly after the outer loop completes. */
if (cols_ready_to_print () == 0)
/* Don't pad unless we know a page was printed. */
lines_left_on_page
= lines_per_body
; while (lines_left_on_page
> 0 && cols_ready_to_print () > 0)
separators_not_printed
= 0; for (j
= 1, p
= column_vector
; j
<= columns
; ++j
, ++p
)
if (p
->lines_to_print
> 0)
padding_not_printed
= p
->start_position
; if (!(p
->print_func
) (p
))
if (use_column_separator
)
++separators_not_printed
;
if (p
->lines_to_print
<= 0)
if (cols_ready_to_print () <= 0)
if (double_space
&& pv
&& extremities
)
if (pad_vertically
&& extremities
)
pad_down (lines_left_on_page
+ lines_per_footer
);
reset_status (); /* Change ON_HOLD to OPEN. */
return TRUE
; /* More pages to go. */
/* Allocate space for storing columns.
This is necessary when printing multiple columns from a single file.
Lines are stored consecutively in buff, separated by '\0'.
(We can't use a fixed offset since with the '-s' flag lines aren't
We maintain a list (line_vector) of pointers to the beginnings
of lines in buff. We allocate one more than the number of lines
because the last entry tells us the index of the last character,
which we need to know in order to print the last line in buff. */
int total_lines
= lines_per_body
* columns
;
int chars_if_truncate
= total_lines
* (chars_per_column
+ 1);
if (line_vector
!= (int *) 0)
free ((int *) line_vector
);
line_vector
= (int *) xmalloc ((total_lines
+ 1) * sizeof (int *)); if (end_vector
!= (int *) 0)
free ((int *) end_vector
);
end_vector
= (int *) xmalloc (total_lines
* sizeof (int *)); buff_allocated
= use_column_separator
? 2 * chars_if_truncate
: chars_if_truncate
; /* Tune this. */
buff
= (char *) xmalloc (buff_allocated
* sizeof (char));/* Store all but the rightmost column.
(Used when printing a single file in multiple downward columns)
set p->current_line to be the index in line_vector of the
For each line in the column
add to line_vector the index of the line's first char
buff_start is the index in buff of the first character in the
int last_col
; /* The rightmost column which will be saved in buff */
for (i
= 1, p
= column_vector
; i
<= last_col
; ++i
, ++p
)
for (i
= 1, p
= column_vector
; i
<= last_col
&& files_ready_to_read
;
for (j
= lines_per_body
; j
&& files_ready_to_read
; --j
)
if (p
->status
== OPEN
) /* Redundant. Clean up. */
|| buff_start
!= buff_current
)
line_vector
[line
] = buff_start
; end_vector
[line
++] = input_position
; buff_start
= buff_current
; /* Keep track of the location of the last char in buff. */
line_vector
[line
] = buff_start
; if (balance_columns
&& p
->lines_stored
!= lines_per_body
)
for (i
= 1, p
= column_vector
; i
<= columns
; ++i
, ++p
)
lines
= total_stored
/ columns
; if (i
<= total_stored
% columns
)
p
->current_line
= first_line
;/* Store a character in the buffer. */
if (buff_current
>= buff_allocated
)
/* May be too generous. */
buff_allocated
= 2 * buff_allocated
; buff
= (char *) xrealloc (buff
, buff_allocated
* sizeof (char)); buff
[buff_current
++] = (char) c
; sprintf (number_buff
, "%*d", chars_per_number
, line_number
++);
for (i
= chars_per_number
; i
> 0; i
--)
(p
->char_func
) ((int) *s
++);
if (number_separator
== input_tab_char
)
i
= number_width
- chars_per_number
; (p
->char_func
) ((int) ' ');
(p
->char_func
) ((int) number_separator
);
if (truncate_lines
&& !parallel_files
)
input_position
+= number_width
;/* Print (or store) padding until the current horizontal position
register int h
= output_position
;
spaces_not_printed
= position
- output_position
; output_position
= position
;/* Pad to the bottom of the page.
If the user has requested a formfeed, use one.
Otherwise, use newlines. */
/* Read the rest of the line.
Read from the current column's file until an end of line is
hit. Used when we've truncated a line and we no longer need
to print or store its characters. */
while ((c
= getc (f
)) != '\n')
/* If we're tabifying output,
When print_char encounters white space it keeps track
of our desired horizontal position and delays printing
until this function is called. */
register int h_old
= output_position
;
register int goal
= h_old
+ spaces_not_printed
;
&& (h_new
= pos_after_tab (chars_per_output_tab
, h_old
)) <= goal
)
putchar (output_tab_char
);
/* Print column separators.
We keep a count until we know that we'll be printing a line,
then print_separators() is called. */
for (; separators_not_printed
> 0; --separators_not_printed
)
print_char (column_separator
);
/* Print (or store, depending on p->char_func) a clump of N
print_clump (p
, n
, clump
)
(p
->char_func
) (*clump
++);
If we're tabifying, all tabs have been converted to spaces by
process_char(). Keep a count of consecutive spaces, and when
a nonspace is encountered, call print_white_space() to print the
required number of tabs and spaces. */
else if (spaces_not_printed
> 0)
/* Nonprintables are assumed to have width 0, except '\b'. */
/* Skip to page PAGE before printing. */
for (n
= 1; n
< page
; ++n
)
for (i
= 1; i
<= lines_per_body
; ++i
)
for (j
= 1, p
= column_vector
; j
<= columns
; ++j
, ++p
)
return files_ready_to_read
> 0;
Formfeeds are assumed to use up two lines at the beginning of
fprintf (stdout
, "\n\n");
pad_across_to (chars_per_margin
);
fprintf (stdout
, "%s %d\n\n\n", header
, page_number
++);
/* Print (or store, if p->char_func is store_char()) a line.
Read a character to determine whether we have a line or not.
(We may hit EOF, \n, or \f)
Once we know we have a line,
set pad_vertically = TRUE, meaning it's safe
to pad down at the end of the page, since we do have a page.
print a header if needed.
pad across to padding_not_printed if needed.
print any separators which need to be printed.
print a line number if it needs to be printed.
Print the clump which corresponds to the first character.
Enter a loop and keep printing until an end of line condition
exists, or until we exceed chars_per_column.
Return FALSE if we exceed chars_per_column before reading
an end of line character, TRUE otherwise. */
last_input_position
= input_position
; chars
= char_to_clump (c
); if (truncate_lines
&& input_position
> chars_per_column
)
input_position
= last_input_position
; if (p
->char_func
!= store_char
)
if (padding_not_printed
!= ANYWHERE
)
pad_across_to (padding_not_printed
);
padding_not_printed
= ANYWHERE
; if (use_column_separator
)
print_clump (p
, chars
, clump_buff
);
last_input_position
= input_position
; chars
= char_to_clump (c
); if (truncate_lines
&& input_position
> chars_per_column
)
input_position
= last_input_position
; print_clump (p
, chars
, clump_buff
);
/* Print a line from buff.
If this function has been called, we know we have something to
print. Therefore we set pad_vertically to TRUE, print
a header if necessary, pad across if necessary, and print
Return TRUE, meaning there is no need to call read_rest_of_line. */
int line
= p
->current_line
++;
register char *first
= &buff
[line_vector
[line
]];
register char *last
= &buff
[line_vector
[line
+ 1]];
if (padding_not_printed
!= ANYWHERE
)
pad_across_to (padding_not_printed
);
padding_not_printed
= ANYWHERE
; if (use_column_separator
)
if (spaces_not_printed
== 0)
output_position
= p
->start_position
+ end_vector
[line
];/* Convert a character to the proper format and return the number of
characters in the resulting clump. Increment input_position by
Tabs are converted to clumps of spaces.
Nonprintable characters may be converted to clumps of escape
sequences or control prefixes.
Note: the width of a clump is not necessarily equal to the number of
characters in clump_buff. (e.g, the width of '\b' is -1, while the
number of characters is 1.) */
register int *s
= clump_buff
;
width
= tab_width (chars_per_input_tab
, input_position
); sprintf (esc_buff
, "%03o", c
);
*s
++ = (int) esc_buff
[i
];
else if (use_cntrl_prefix
)
sprintf (esc_buff
, "%03o", c
);
*s
++ = (int) esc_buff
[i
];
/* We've just printed some files and need to clean up things before
looking for more options and printing the next batch of files.
Free everything we've xmalloc'ed, except `header'. */
/* Complain, print a usage message, and die. */
Usage: %s [+PAGE] [-COLUMN] [-abcdfFmrtv] [-e[in-tab-char[in-tab-width]]]\n\
[-h header] [-i[out-tab-char[out-tab-width]]] [-l page-length]\n\
[-n[number-separator[digits]]] [-o left-margin]\n\
[-s[column-separator]] [-w page-width] [--help] [--version] [file...]\n",
projects / unix-history / blob