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Copy pathprint.c
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3769 lines (3274 loc) · 87.6 KB
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/*-------------------------------------------------------------------------
*
* Query-result printing support for frontend code
*
* This file used to be part of psql, but now it's separated out to allow
* other frontend programs to use it. Because the printing code needs
* access to the cancel_pressed flag as well as SIGPIPE trapping and
* pager open/close functions, all that stuff came with it.
*
*
* Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/fe_utils/print.c
*
*-------------------------------------------------------------------------
*/
#include "postgres_fe.h"
#include <limits.h>
#include <math.h>
#include <unistd.h>
#ifndef WIN32
#include <sys/ioctl.h> /* for ioctl() */
#endif
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#include "catalog/pg_type_d.h"
#include "fe_utils/mbprint.h"
#include "fe_utils/print.h"
/*
* If the calling program doesn't have any mechanism for setting
* cancel_pressed, it will have no effect.
*
* Note: print.c's general strategy for when to check cancel_pressed is to do
* so at completion of each row of output.
*/
volatile sig_atomic_t cancel_pressed = false;
static bool always_ignore_sigpipe = false;
/* info for locale-aware numeric formatting; set up by setDecimalLocale() */
static char *decimal_point;
static int groupdigits;
static char *thousands_sep;
static char default_footer[100];
static printTableFooter default_footer_cell = {default_footer, NULL};
/* Line style control structures */
const printTextFormat pg_asciiformat =
{
"ascii",
{
{"-", "+", "+", "+"},
{"-", "+", "+", "+"},
{"-", "+", "+", "+"},
{"", "|", "|", "|"}
},
"|",
"|",
"|",
" ",
"+",
" ",
"+",
".",
".",
true
};
const printTextFormat pg_asciiformat_old =
{
"old-ascii",
{
{"-", "+", "+", "+"},
{"-", "+", "+", "+"},
{"-", "+", "+", "+"},
{"", "|", "|", "|"}
},
":",
";",
" ",
"+",
" ",
" ",
" ",
" ",
" ",
false
};
/* Default unicode linestyle format */
printTextFormat pg_utf8format;
typedef struct unicodeStyleRowFormat
{
const char *horizontal;
const char *vertical_and_right[2];
const char *vertical_and_left[2];
} unicodeStyleRowFormat;
typedef struct unicodeStyleColumnFormat
{
const char *vertical;
const char *vertical_and_horizontal[2];
const char *up_and_horizontal[2];
const char *down_and_horizontal[2];
} unicodeStyleColumnFormat;
typedef struct unicodeStyleBorderFormat
{
const char *up_and_right;
const char *vertical;
const char *down_and_right;
const char *horizontal;
const char *down_and_left;
const char *left_and_right;
} unicodeStyleBorderFormat;
typedef struct unicodeStyleFormat
{
unicodeStyleRowFormat row_style[2];
unicodeStyleColumnFormat column_style[2];
unicodeStyleBorderFormat border_style[2];
const char *header_nl_left;
const char *header_nl_right;
const char *nl_left;
const char *nl_right;
const char *wrap_left;
const char *wrap_right;
bool wrap_right_border;
} unicodeStyleFormat;
static const unicodeStyleFormat unicode_style = {
{
{
/* U+2500 Box Drawings Light Horizontal */
"\342\224\200",
/*--
* U+251C Box Drawings Light Vertical and Right,
* U+255F Box Drawings Vertical Double and Right Single
*--
*/
{"\342\224\234", "\342\225\237"},
/*--
* U+2524 Box Drawings Light Vertical and Left,
* U+2562 Box Drawings Vertical Double and Left Single
*--
*/
{"\342\224\244", "\342\225\242"},
},
{
/* U+2550 Box Drawings Double Horizontal */
"\342\225\220",
/*--
* U+255E Box Drawings Vertical Single and Right Double,
* U+2560 Box Drawings Double Vertical and Right
*--
*/
{"\342\225\236", "\342\225\240"},
/*--
* U+2561 Box Drawings Vertical Single and Left Double,
* U+2563 Box Drawings Double Vertical and Left
*--
*/
{"\342\225\241", "\342\225\243"},
},
},
{
{
/* U+2502 Box Drawings Light Vertical */
"\342\224\202",
/*--
* U+253C Box Drawings Light Vertical and Horizontal,
* U+256A Box Drawings Vertical Single and Horizontal Double
*--
*/
{"\342\224\274", "\342\225\252"},
/*--
* U+2534 Box Drawings Light Up and Horizontal,
* U+2567 Box Drawings Up Single and Horizontal Double
*--
*/
{"\342\224\264", "\342\225\247"},
/*--
* U+252C Box Drawings Light Down and Horizontal,
* U+2564 Box Drawings Down Single and Horizontal Double
*--
*/
{"\342\224\254", "\342\225\244"},
},
{
/* U+2551 Box Drawings Double Vertical */
"\342\225\221",
/*--
* U+256B Box Drawings Vertical Double and Horizontal Single,
* U+256C Box Drawings Double Vertical and Horizontal
*--
*/
{"\342\225\253", "\342\225\254"},
/*--
* U+2568 Box Drawings Up Double and Horizontal Single,
* U+2569 Box Drawings Double Up and Horizontal
*--
*/
{"\342\225\250", "\342\225\251"},
/*--
* U+2565 Box Drawings Down Double and Horizontal Single,
* U+2566 Box Drawings Double Down and Horizontal
*--
*/
{"\342\225\245", "\342\225\246"},
},
},
{
/*--
* U+2514 Box Drawings Light Up and Right,
* U+2502 Box Drawings Light Vertical,
* U+250C Box Drawings Light Down and Right,
* U+2500 Box Drawings Light Horizontal,
* U+2510 Box Drawings Light Down and Left,
* U+2518 Box Drawings Light Up and Left
*--
*/
{"\342\224\224", "\342\224\202", "\342\224\214", "\342\224\200", "\342\224\220", "\342\224\230"},
/*--
* U+255A Box Drawings Double Up and Right,
* U+2551 Box Drawings Double Vertical,
* U+2554 Box Drawings Double Down and Right,
* U+2550 Box Drawings Double Horizontal,
* U+2557 Box Drawings Double Down and Left,
* U+255D Box Drawings Double Up and Left
*--
*/
{"\342\225\232", "\342\225\221", "\342\225\224", "\342\225\220", "\342\225\227", "\342\225\235"},
},
" ",
/* U+21B5 Downwards Arrow with Corner Leftwards */
"\342\206\265",
" ",
/* U+21B5 Downwards Arrow with Corner Leftwards */
"\342\206\265",
/* U+2026 Horizontal Ellipsis */
"\342\200\246",
"\342\200\246",
true
};
/* Local functions */
static int strlen_max_width(unsigned char *str, int *target_width, int encoding);
static void IsPagerNeeded(const printTableContent *cont, int extra_lines, bool expanded,
FILE **fout, bool *is_pager);
static void print_aligned_vertical(const printTableContent *cont,
FILE *fout, bool is_pager);
/* Count number of digits in integral part of number */
static int
integer_digits(const char *my_str)
{
/* ignoring any sign ... */
if (my_str[0] == '-' || my_str[0] == '+')
my_str++;
/* ... count initial integral digits */
return strspn(my_str, "0123456789");
}
/* Compute additional length required for locale-aware numeric output */
static int
additional_numeric_locale_len(const char *my_str)
{
int int_len = integer_digits(my_str),
len = 0;
/* Account for added thousands_sep instances */
if (int_len > groupdigits)
len += ((int_len - 1) / groupdigits) * strlen(thousands_sep);
/* Account for possible additional length of decimal_point */
if (strchr(my_str, '.') != NULL)
len += strlen(decimal_point) - 1;
return len;
}
/*
* Format a numeric value per current LC_NUMERIC locale setting
*
* Returns the appropriately formatted string in a new allocated block,
* caller must free.
*
* setDecimalLocale() must have been called earlier.
*/
static char *
format_numeric_locale(const char *my_str)
{
char *new_str;
int new_len,
int_len,
leading_digits,
i,
new_str_pos;
/*
* If the string doesn't look like a number, return it unchanged. This
* check is essential to avoid mangling already-localized "money" values.
*/
if (strspn(my_str, "0123456789+-.eE") != strlen(my_str))
return pg_strdup(my_str);
new_len = strlen(my_str) + additional_numeric_locale_len(my_str);
new_str = pg_malloc(new_len + 1);
new_str_pos = 0;
int_len = integer_digits(my_str);
/* number of digits in first thousands group */
leading_digits = int_len % groupdigits;
if (leading_digits == 0)
leading_digits = groupdigits;
/* process sign */
if (my_str[0] == '-' || my_str[0] == '+')
{
new_str[new_str_pos++] = my_str[0];
my_str++;
}
/* process integer part of number */
for (i = 0; i < int_len; i++)
{
/* Time to insert separator? */
if (i > 0 && --leading_digits == 0)
{
strcpy(&new_str[new_str_pos], thousands_sep);
new_str_pos += strlen(thousands_sep);
leading_digits = groupdigits;
}
new_str[new_str_pos++] = my_str[i];
}
/* handle decimal point if any */
if (my_str[i] == '.')
{
strcpy(&new_str[new_str_pos], decimal_point);
new_str_pos += strlen(decimal_point);
i++;
}
/* copy the rest (fractional digits and/or exponent, and \0 terminator) */
strcpy(&new_str[new_str_pos], &my_str[i]);
/* assert we didn't underestimate new_len (an overestimate is OK) */
Assert(strlen(new_str) <= new_len);
return new_str;
}
static void
print_separator(struct separator sep, FILE *fout)
{
if (sep.separator_zero)
fputc('\000', fout);
else if (sep.separator)
fputs(sep.separator, fout);
}
/*
* Return the list of explicitly-requested footers or, when applicable, the
* default "(xx rows)" footer. Always omit the default footer when given
* non-default footers, "\pset footer off", or a specific instruction to that
* effect from a calling backslash command. Vertical formats number each row,
* making the default footer redundant; they do not call this function.
*
* The return value may point to static storage; do not keep it across calls.
*/
static printTableFooter *
footers_with_default(const printTableContent *cont)
{
if (cont->footers == NULL && cont->opt->default_footer)
{
unsigned long total_records;
total_records = cont->opt->prior_records + cont->nrows;
snprintf(default_footer, sizeof(default_footer),
ngettext("(%lu row)", "(%lu rows)", total_records),
total_records);
return &default_footer_cell;
}
else
return cont->footers;
}
/*************************/
/* Unaligned text */
/*************************/
static void
print_unaligned_text(const printTableContent *cont, FILE *fout)
{
bool opt_tuples_only = cont->opt->tuples_only;
unsigned int i;
const char *const *ptr;
bool need_recordsep = false;
if (cancel_pressed)
return;
if (cont->opt->start_table)
{
/* print title */
if (!opt_tuples_only && cont->title)
{
fputs(cont->title, fout);
print_separator(cont->opt->recordSep, fout);
}
/* print headers */
if (!opt_tuples_only)
{
for (ptr = cont->headers; *ptr; ptr++)
{
if (ptr != cont->headers)
print_separator(cont->opt->fieldSep, fout);
fputs(*ptr, fout);
}
need_recordsep = true;
}
}
else
/* assume continuing printout */
need_recordsep = true;
/* print cells */
for (i = 0, ptr = cont->cells; *ptr; i++, ptr++)
{
if (need_recordsep)
{
print_separator(cont->opt->recordSep, fout);
need_recordsep = false;
if (cancel_pressed)
break;
}
fputs(*ptr, fout);
if ((i + 1) % cont->ncolumns)
print_separator(cont->opt->fieldSep, fout);
else
need_recordsep = true;
}
/* print footers */
if (cont->opt->stop_table)
{
printTableFooter *footers = footers_with_default(cont);
if (!opt_tuples_only && footers != NULL && !cancel_pressed)
{
printTableFooter *f;
for (f = footers; f; f = f->next)
{
if (need_recordsep)
{
print_separator(cont->opt->recordSep, fout);
need_recordsep = false;
}
fputs(f->data, fout);
need_recordsep = true;
}
}
/*
* The last record is terminated by a newline, independent of the set
* record separator. But when the record separator is a zero byte, we
* use that (compatible with find -print0 and xargs).
*/
if (need_recordsep)
{
if (cont->opt->recordSep.separator_zero)
print_separator(cont->opt->recordSep, fout);
else
fputc('\n', fout);
}
}
}
static void
print_unaligned_vertical(const printTableContent *cont, FILE *fout)
{
bool opt_tuples_only = cont->opt->tuples_only;
unsigned int i;
const char *const *ptr;
bool need_recordsep = false;
if (cancel_pressed)
return;
if (cont->opt->start_table)
{
/* print title */
if (!opt_tuples_only && cont->title)
{
fputs(cont->title, fout);
need_recordsep = true;
}
}
else
/* assume continuing printout */
need_recordsep = true;
/* print records */
for (i = 0, ptr = cont->cells; *ptr; i++, ptr++)
{
if (need_recordsep)
{
/* record separator is 2 occurrences of recordsep in this mode */
print_separator(cont->opt->recordSep, fout);
print_separator(cont->opt->recordSep, fout);
need_recordsep = false;
if (cancel_pressed)
break;
}
fputs(cont->headers[i % cont->ncolumns], fout);
print_separator(cont->opt->fieldSep, fout);
fputs(*ptr, fout);
if ((i + 1) % cont->ncolumns)
print_separator(cont->opt->recordSep, fout);
else
need_recordsep = true;
}
if (cont->opt->stop_table)
{
/* print footers */
if (!opt_tuples_only && cont->footers != NULL && !cancel_pressed)
{
printTableFooter *f;
print_separator(cont->opt->recordSep, fout);
for (f = cont->footers; f; f = f->next)
{
print_separator(cont->opt->recordSep, fout);
fputs(f->data, fout);
}
}
/* see above in print_unaligned_text() */
if (need_recordsep)
{
if (cont->opt->recordSep.separator_zero)
print_separator(cont->opt->recordSep, fout);
else
fputc('\n', fout);
}
}
}
/********************/
/* Aligned text */
/********************/
/* draw "line" */
static void
_print_horizontal_line(const unsigned int ncolumns, const unsigned int *widths,
unsigned short border, printTextRule pos,
const printTextFormat *format,
FILE *fout)
{
const printTextLineFormat *lformat = &format->lrule[pos];
unsigned int i,
j;
if (border == 1)
fputs(lformat->hrule, fout);
else if (border == 2)
fprintf(fout, "%s%s", lformat->leftvrule, lformat->hrule);
for (i = 0; i < ncolumns; i++)
{
for (j = 0; j < widths[i]; j++)
fputs(lformat->hrule, fout);
if (i < ncolumns - 1)
{
if (border == 0)
fputc(' ', fout);
else
fprintf(fout, "%s%s%s", lformat->hrule,
lformat->midvrule, lformat->hrule);
}
}
if (border == 2)
fprintf(fout, "%s%s", lformat->hrule, lformat->rightvrule);
else if (border == 1)
fputs(lformat->hrule, fout);
fputc('\n', fout);
}
/*
* Print pretty boxes around cells.
*/
static void
print_aligned_text(const printTableContent *cont, FILE *fout, bool is_pager)
{
bool opt_tuples_only = cont->opt->tuples_only;
int encoding = cont->opt->encoding;
unsigned short opt_border = cont->opt->border;
const printTextFormat *format = get_line_style(cont->opt);
const printTextLineFormat *dformat = &format->lrule[PRINT_RULE_DATA];
unsigned int col_count = 0,
cell_count = 0;
unsigned int i,
j;
unsigned int *width_header,
*max_width,
*width_wrap,
*width_average;
unsigned int *max_nl_lines, /* value split by newlines */
*curr_nl_line,
*max_bytes;
unsigned char **format_buf;
unsigned int width_total;
unsigned int total_header_width;
unsigned int extra_row_output_lines = 0;
unsigned int extra_output_lines = 0;
const char *const *ptr;
struct lineptr **col_lineptrs; /* pointers to line pointer per column */
bool *header_done; /* Have all header lines been output? */
int *bytes_output; /* Bytes output for column value */
printTextLineWrap *wrap; /* Wrap status for each column */
int output_columns = 0; /* Width of interactive console */
bool is_local_pager = false;
if (cancel_pressed)
return;
if (opt_border > 2)
opt_border = 2;
if (cont->ncolumns > 0)
{
col_count = cont->ncolumns;
width_header = pg_malloc0(col_count * sizeof(*width_header));
width_average = pg_malloc0(col_count * sizeof(*width_average));
max_width = pg_malloc0(col_count * sizeof(*max_width));
width_wrap = pg_malloc0(col_count * sizeof(*width_wrap));
max_nl_lines = pg_malloc0(col_count * sizeof(*max_nl_lines));
curr_nl_line = pg_malloc0(col_count * sizeof(*curr_nl_line));
col_lineptrs = pg_malloc0(col_count * sizeof(*col_lineptrs));
max_bytes = pg_malloc0(col_count * sizeof(*max_bytes));
format_buf = pg_malloc0(col_count * sizeof(*format_buf));
header_done = pg_malloc0(col_count * sizeof(*header_done));
bytes_output = pg_malloc0(col_count * sizeof(*bytes_output));
wrap = pg_malloc0(col_count * sizeof(*wrap));
}
else
{
width_header = NULL;
width_average = NULL;
max_width = NULL;
width_wrap = NULL;
max_nl_lines = NULL;
curr_nl_line = NULL;
col_lineptrs = NULL;
max_bytes = NULL;
format_buf = NULL;
header_done = NULL;
bytes_output = NULL;
wrap = NULL;
}
/* scan all column headers, find maximum width and max max_nl_lines */
for (i = 0; i < col_count; i++)
{
int width,
nl_lines,
bytes_required;
pg_wcssize((const unsigned char *) cont->headers[i], strlen(cont->headers[i]),
encoding, &width, &nl_lines, &bytes_required);
if (width > max_width[i])
max_width[i] = width;
if (nl_lines > max_nl_lines[i])
max_nl_lines[i] = nl_lines;
if (bytes_required > max_bytes[i])
max_bytes[i] = bytes_required;
if (nl_lines > extra_row_output_lines)
extra_row_output_lines = nl_lines;
width_header[i] = width;
}
/* Add height of tallest header column */
extra_output_lines += extra_row_output_lines;
extra_row_output_lines = 0;
/* scan all cells, find maximum width, compute cell_count */
for (i = 0, ptr = cont->cells; *ptr; ptr++, i++, cell_count++)
{
int width,
nl_lines,
bytes_required;
pg_wcssize((const unsigned char *) *ptr, strlen(*ptr), encoding,
&width, &nl_lines, &bytes_required);
if (width > max_width[i % col_count])
max_width[i % col_count] = width;
if (nl_lines > max_nl_lines[i % col_count])
max_nl_lines[i % col_count] = nl_lines;
if (bytes_required > max_bytes[i % col_count])
max_bytes[i % col_count] = bytes_required;
width_average[i % col_count] += width;
}
/* If we have rows, compute average */
if (col_count != 0 && cell_count != 0)
{
int rows = cell_count / col_count;
for (i = 0; i < col_count; i++)
width_average[i] /= rows;
}
/* adjust the total display width based on border style */
if (opt_border == 0)
width_total = col_count;
else if (opt_border == 1)
width_total = col_count * 3 - ((col_count > 0) ? 1 : 0);
else
width_total = col_count * 3 + 1;
total_header_width = width_total;
for (i = 0; i < col_count; i++)
{
width_total += max_width[i];
total_header_width += width_header[i];
}
/*
* At this point: max_width[] contains the max width of each column,
* max_nl_lines[] contains the max number of lines in each column,
* max_bytes[] contains the maximum storage space for formatting strings,
* width_total contains the giant width sum. Now we allocate some memory
* for line pointers.
*/
for (i = 0; i < col_count; i++)
{
/* Add entry for ptr == NULL array termination */
col_lineptrs[i] = pg_malloc0((max_nl_lines[i] + 1) *
sizeof(**col_lineptrs));
format_buf[i] = pg_malloc(max_bytes[i] + 1);
col_lineptrs[i]->ptr = format_buf[i];
}
/* Default word wrap to the full width, i.e. no word wrap */
for (i = 0; i < col_count; i++)
width_wrap[i] = max_width[i];
/*
* Choose target output width: \pset columns, or $COLUMNS, or ioctl
*/
if (cont->opt->columns > 0)
output_columns = cont->opt->columns;
else if ((fout == stdout && isatty(fileno(stdout))) || is_pager)
{
if (cont->opt->env_columns > 0)
output_columns = cont->opt->env_columns;
#ifdef TIOCGWINSZ
else
{
struct winsize screen_size;
if (ioctl(fileno(stdout), TIOCGWINSZ, &screen_size) != -1)
output_columns = screen_size.ws_col;
}
#endif
}
if (cont->opt->format == PRINT_WRAPPED)
{
/*
* Optional optimized word wrap. Shrink columns with a high max/avg
* ratio. Slightly bias against wider columns. (Increases chance a
* narrow column will fit in its cell.) If available columns is
* positive... and greater than the width of the unshrinkable column
* headers
*/
if (output_columns > 0 && output_columns >= total_header_width)
{
/* While there is still excess width... */
while (width_total > output_columns)
{
double max_ratio = 0;
int worst_col = -1;
/*
* Find column that has the highest ratio of its maximum width
* compared to its average width. This tells us which column
* will produce the fewest wrapped values if shortened.
* width_wrap starts as equal to max_width.
*/
for (i = 0; i < col_count; i++)
{
if (width_average[i] && width_wrap[i] > width_header[i])
{
/* Penalize wide columns by 1% of their width */
double ratio;
ratio = (double) width_wrap[i] / width_average[i] +
max_width[i] * 0.01;
if (ratio > max_ratio)
{
max_ratio = ratio;
worst_col = i;
}
}
}
/* Exit loop if we can't squeeze any more. */
if (worst_col == -1)
break;
/* Decrease width of target column by one. */
width_wrap[worst_col]--;
width_total--;
}
}
}
/*
* If in expanded auto mode, we have now calculated the expected width, so
* we can now escape to vertical mode if necessary. If the output has
* only one column, the expanded format would be wider than the regular
* format, so don't use it in that case.
*/
if (cont->opt->expanded == 2 && output_columns > 0 && cont->ncolumns > 1 &&
(output_columns < total_header_width || output_columns < width_total))
{
print_aligned_vertical(cont, fout, is_pager);
goto cleanup;
}
/* If we wrapped beyond the display width, use the pager */
if (!is_pager && fout == stdout && output_columns > 0 &&
(output_columns < total_header_width || output_columns < width_total))
{
fout = PageOutput(INT_MAX, cont->opt); /* force pager */
is_pager = is_local_pager = true;
}
/* Check if newlines or our wrapping now need the pager */
if (!is_pager && fout == stdout)
{
/* scan all cells, find maximum width, compute cell_count */
for (i = 0, ptr = cont->cells; *ptr; ptr++, cell_count++)
{
int width,
nl_lines,
bytes_required;
pg_wcssize((const unsigned char *) *ptr, strlen(*ptr), encoding,
&width, &nl_lines, &bytes_required);
/*
* A row can have both wrapping and newlines that cause it to
* display across multiple lines. We check for both cases below.
*/
if (width > 0 && width_wrap[i])
{
unsigned int extra_lines;
/* don't count the first line of nl_lines - it's not "extra" */
extra_lines = ((width - 1) / width_wrap[i]) + nl_lines - 1;
if (extra_lines > extra_row_output_lines)
extra_row_output_lines = extra_lines;
}
/* i is the current column number: increment with wrap */
if (++i >= col_count)
{
i = 0;
/* At last column of each row, add tallest column height */
extra_output_lines += extra_row_output_lines;
extra_row_output_lines = 0;
}
}
IsPagerNeeded(cont, extra_output_lines, false, &fout, &is_pager);
is_local_pager = is_pager;
}
/* time to output */
if (cont->opt->start_table)
{
/* print title */
if (cont->title && !opt_tuples_only)
{
int width,
height;
pg_wcssize((const unsigned char *) cont->title, strlen(cont->title),
encoding, &width, &height, NULL);
if (width >= width_total)
/* Aligned */
fprintf(fout, "%s\n", cont->title);
else
/* Centered */
fprintf(fout, "%-*s%s\n", (width_total - width) / 2, "",
cont->title);
}
/* print headers */
if (!opt_tuples_only)
{
int more_col_wrapping;
int curr_nl_line;
if (opt_border == 2)
_print_horizontal_line(col_count, width_wrap, opt_border,
PRINT_RULE_TOP, format, fout);
for (i = 0; i < col_count; i++)
pg_wcsformat((const unsigned char *) cont->headers[i],
strlen(cont->headers[i]), encoding,
col_lineptrs[i], max_nl_lines[i]);
more_col_wrapping = col_count;
curr_nl_line = 0;
if (col_count > 0)
memset(header_done, false, col_count * sizeof(bool));
while (more_col_wrapping)
{
if (opt_border == 2)
fputs(dformat->leftvrule, fout);
for (i = 0; i < cont->ncolumns; i++)
{
struct lineptr *this_line = col_lineptrs[i] + curr_nl_line;
unsigned int nbspace;
if (opt_border != 0 ||
(!format->wrap_right_border && i > 0))
fputs(curr_nl_line ? format->header_nl_left : " ",
fout);
if (!header_done[i])
{
nbspace = width_wrap[i] - this_line->width;
/* centered */
fprintf(fout, "%-*s%s%-*s",
nbspace / 2, "", this_line->ptr, (nbspace + 1) / 2, "");
if (!(this_line + 1)->ptr)
{
more_col_wrapping--;
header_done[i] = 1;
}
}
else