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util-linux/text-utils/column.c

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/*
* Copyright (c) 1989, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Copyright (C) 2017 Karel Zak <kzak@redhat.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <ctype.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <getopt.h>
#include "nls.h"
#include "c.h"
#include "widechar.h"
#include "xalloc.h"
#include "strutils.h"
#include "closestream.h"
#include "ttyutils.h"
#include "strv.h"
#include "optutils.h"
#include "mbsalign.h"
#include "libsmartcols.h"
#define TABCHAR_CELLS 8
enum {
COLUMN_MODE_FILLCOLS = 0,
COLUMN_MODE_FILLROWS,
COLUMN_MODE_TABLE,
COLUMN_MODE_SIMPLE
};
struct column_control {
int mode; /* COLUMN_MODE_* */
size_t termwidth;
struct libscols_table *tab;
char **tab_colnames; /* array with column names */
const char *tab_name; /* table name */
const char *tab_order; /* --table-order */
const char *tab_colright; /* --table-right */
const char *tab_coltrunc; /* --table-trunc */
const char *tab_colnoextrem; /* --table-noextreme */
const char *tab_colwrap; /* --table-wrap */
const char *tab_colhide; /* --table-hide */
const char *tree;
const char *tree_id;
const char *tree_parent;
wchar_t *input_separator;
const char *output_separator;
wchar_t **ents; /* input entries */
size_t nents; /* number of entries */
size_t maxlength; /* longest input record (line) */
unsigned int greedy :1,
json :1,
header_repeat :1,
tab_empty_lines :1, /* --table-empty-lines */
tab_noheadings :1;
};
static size_t width(const wchar_t *str)
{
size_t width = 0;
for (; *str != '\0'; str++) {
#ifdef HAVE_WIDECHAR
int x = wcwidth(*str); /* don't use wcswidth(), need to ignore non-printable */
if (x > 0)
width += x;
#else
if (isprint(*str))
width++;
#endif
}
return width;
}
static wchar_t *mbs_to_wcs(const char *s)
{
#ifdef HAVE_WIDECHAR
ssize_t n;
wchar_t *wcs;
n = mbstowcs((wchar_t *)0, s, 0);
if (n < 0)
return NULL;
wcs = xcalloc((n + 1) * sizeof(wchar_t), 1);
n = mbstowcs(wcs, s, n + 1);
if (n < 0) {
free(wcs);
return NULL;
}
return wcs;
#else
return xstrdup(s);
#endif
}
static char *wcs_to_mbs(const wchar_t *s)
{
#ifdef HAVE_WIDECHAR
size_t n;
char *str;
n = wcstombs(NULL, s, 0);
if (n == (size_t) -1)
return NULL;
str = xcalloc(n + 1, 1);
if (wcstombs(str, s, n) == (size_t) -1) {
free(str);
return NULL;
}
return str;
#else
return xstrdup(s);
#endif
}
static wchar_t *local_wcstok(wchar_t *p, const wchar_t *separator, int greedy, wchar_t **state)
{
wchar_t *result = NULL;
if (greedy)
#ifdef HAVE_WIDECHAR
return wcstok(p, separator, state);
#else
return strtok_r(p, separator, state);
#endif
if (!p) {
if (!*state || !**state)
return NULL;
p = *state;
}
result = p;
#ifdef HAVE_WIDECHAR
p = wcspbrk(result, separator);
#else
p = strpbrk(result, separator);
#endif
if (!p)
*state = NULL;
else {
*p = '\0';
*state = p + 1;
}
return result;
}
static char **split_or_error(const char *str, const char *errmsg)
{
char **res = strv_split(str, ",");
if (!res) {
if (errno == ENOMEM)
err_oom();
errx(EXIT_FAILURE, "%s: '%s'", errmsg, str);
}
return res;
}
static void init_table(struct column_control *ctl)
{
scols_init_debug(0);
ctl->tab = scols_new_table();
if (!ctl->tab)
err(EXIT_FAILURE, _("failed to allocate output table"));
scols_table_set_column_separator(ctl->tab, ctl->output_separator);
if (ctl->json) {
scols_table_enable_json(ctl->tab, 1);
scols_table_set_name(ctl->tab, ctl->tab_name ? : "table");
} else
scols_table_enable_noencoding(ctl->tab, 1);
if (ctl->tab_colnames) {
char **name;
STRV_FOREACH(name, ctl->tab_colnames)
scols_table_new_column(ctl->tab, *name, 0, 0);
if (ctl->header_repeat)
scols_table_enable_header_repeat(ctl->tab, 1);
scols_table_enable_noheadings(ctl->tab, !!ctl->tab_noheadings);
} else
scols_table_enable_noheadings(ctl->tab, 1);
}
static struct libscols_column *string_to_column(struct column_control *ctl, const char *str)
{
uint32_t colnum = 0;
if (isdigit_string(str))
colnum = strtou32_or_err(str, _("failed to parse column")) - 1;
else {
char **name;
STRV_FOREACH(name, ctl->tab_colnames) {
if (strcasecmp(*name, str) == 0)
break;
colnum++;
}
if (!name || !*name)
errx(EXIT_FAILURE, _("undefined column name '%s'"), str);
}
return scols_table_get_column(ctl->tab, colnum);
}
static struct libscols_column *get_last_visible_column(struct column_control *ctl)
{
struct libscols_iter *itr;
struct libscols_column *cl, *last = NULL;
itr = scols_new_iter(SCOLS_ITER_FORWARD);
if (!itr)
err_oom();
while (scols_table_next_column(ctl->tab, itr, &cl) == 0) {
if (scols_column_get_flags(cl) & SCOLS_FL_HIDDEN)
continue;
last = cl;
}
scols_free_iter(itr);
return last;
}
static int column_set_flag(struct libscols_column *cl, int fl)
{
int cur = scols_column_get_flags(cl);
return scols_column_set_flags(cl, cur | fl);
}
static void apply_columnflag_from_list(struct column_control *ctl, const char *list,
int flag, const char *errmsg)
{
char **all = split_or_error(list, errmsg);
char **one;
int unnamed = 0;
STRV_FOREACH(one, all) {
struct libscols_column *cl;
if (flag == SCOLS_FL_HIDDEN && strcmp(*one, "-") == 0) {
unnamed = 1;
continue;
}
cl = string_to_column(ctl, *one);
if (cl)
column_set_flag(cl, flag);
}
strv_free(all);
/* apply flag to all columns without name */
if (unnamed) {
struct libscols_iter *itr;
struct libscols_column *cl;
itr = scols_new_iter(SCOLS_ITER_FORWARD);
if (!itr)
err_oom();
while (scols_table_next_column(ctl->tab, itr, &cl) == 0) {
struct libscols_cell *ce = scols_column_get_header(cl);
if (ce == NULL || scols_cell_get_data(ce) == NULL)
column_set_flag(cl, flag);
}
scols_free_iter(itr);
}
}
static void reorder_table(struct column_control *ctl)
{
struct libscols_column **wanted, *last = NULL;
size_t i, count = 0;
size_t ncols = scols_table_get_ncols(ctl->tab);
char **order = split_or_error(ctl->tab_order, _("failed to parse --table-order list"));
char **one;
wanted = xcalloc(ncols, sizeof(struct libscols_column *));
STRV_FOREACH(one, order) {
struct libscols_column *cl = string_to_column(ctl, *one);
if (cl)
wanted[count++] = cl;
}
for (i = 0; i < count; i++) {
scols_table_move_column(ctl->tab, last, wanted[i]);
last = wanted[i];
}
free(wanted);
strv_free(order);
}
static void create_tree(struct column_control *ctl)
{
struct libscols_column *cl_tree = string_to_column(ctl, ctl->tree);
struct libscols_column *cl_p = string_to_column(ctl, ctl->tree_parent);
struct libscols_column *cl_i = string_to_column(ctl, ctl->tree_id);
struct libscols_iter *itr_p, *itr_i;
struct libscols_line *ln_i;
if (!cl_p || !cl_i || !cl_tree)
return; /* silently ignore the tree request */
column_set_flag(cl_tree, SCOLS_FL_TREE);
itr_p = scols_new_iter(SCOLS_ITER_FORWARD);
itr_i = scols_new_iter(SCOLS_ITER_FORWARD);
if (!itr_p || !itr_i)
err_oom();
/* scan all lines for ID */
while (scols_table_next_line(ctl->tab, itr_i, &ln_i) == 0) {
struct libscols_line *ln;
struct libscols_cell *ce = scols_line_get_column_cell(ln_i, cl_i);
const char *id = ce ? scols_cell_get_data(ce) : NULL;
if (!id)
continue;
/* see if the ID is somewhere used in parent column */
scols_reset_iter(itr_p, SCOLS_ITER_FORWARD);
while (scols_table_next_line(ctl->tab, itr_p, &ln) == 0) {
const char *parent;
ce = scols_line_get_column_cell(ln, cl_p);
parent = ce ? scols_cell_get_data(ce) : NULL;
if (!parent)
continue;
if (strcmp(id, parent) != 0)
continue;
if (scols_line_is_ancestor(ln, ln_i))
continue;
scols_line_add_child(ln_i, ln);
}
}
scols_free_iter(itr_p);
scols_free_iter(itr_i);
}
static void modify_table(struct column_control *ctl)
{
scols_table_set_termwidth(ctl->tab, ctl->termwidth);
scols_table_set_termforce(ctl->tab, SCOLS_TERMFORCE_ALWAYS);
if (ctl->tab_colright)
apply_columnflag_from_list(ctl, ctl->tab_colright,
SCOLS_FL_RIGHT, _("failed to parse --table-right list"));
if (ctl->tab_coltrunc)
apply_columnflag_from_list(ctl, ctl->tab_coltrunc,
SCOLS_FL_TRUNC , _("failed to parse --table-trunc list"));
if (ctl->tab_colnoextrem)
apply_columnflag_from_list(ctl, ctl->tab_colnoextrem,
SCOLS_FL_NOEXTREMES , _("failed to parse --table-noextreme list"));
if (ctl->tab_colwrap)
apply_columnflag_from_list(ctl, ctl->tab_colwrap,
SCOLS_FL_WRAP , _("failed to parse --table-wrap list"));
if (ctl->tab_colhide)
apply_columnflag_from_list(ctl, ctl->tab_colhide,
SCOLS_FL_HIDDEN , _("failed to parse --table-hide list"));
if (!ctl->tab_colnoextrem) {
struct libscols_column *cl = get_last_visible_column(ctl);
if (cl)
column_set_flag(cl, SCOLS_FL_NOEXTREMES);
}
if (ctl->tree)
create_tree(ctl);
/* This must be the last step! */
if (ctl->tab_order)
reorder_table(ctl);
}
static int add_line_to_table(struct column_control *ctl, wchar_t *wcs)
{
wchar_t *wcdata, *sv = NULL;
size_t n = 0;
struct libscols_line *ln = NULL;
if (!ctl->tab)
init_table(ctl);
while ((wcdata = local_wcstok(wcs, ctl->input_separator, ctl->greedy, &sv))) {
char *data;
if (scols_table_get_ncols(ctl->tab) < n + 1) {
if (scols_table_is_json(ctl->tab))
errx(EXIT_FAILURE, _("line %zu: for JSON the name of the "
"column %zu is required"),
scols_table_get_nlines(ctl->tab) + 1,
n + 1);
scols_table_new_column(ctl->tab, NULL, 0, 0);
}
if (!ln) {
ln = scols_table_new_line(ctl->tab, NULL);
if (!ln)
err(EXIT_FAILURE, _("failed to allocate output line"));
}
data = wcs_to_mbs(wcdata);
if (!data)
err(EXIT_FAILURE, _("failed to allocate output data"));
if (scols_line_refer_data(ln, n, data))
err(EXIT_FAILURE, _("failed to add output data"));
n++;
wcs = NULL;
}
return 0;
}
static int add_emptyline_to_table(struct column_control *ctl)
{
if (!ctl->tab)
init_table(ctl);
if (!scols_table_new_line(ctl->tab, NULL))
err(EXIT_FAILURE, _("failed to allocate output line"));
return 0;
}
static int read_input(struct column_control *ctl, FILE *fp)
{
char *buf = NULL;
size_t bufsz = 0;
size_t maxents = 0;
int rc = 0;
/* Read input */
do {
char *str, *p;
wchar_t *wcs = NULL;
size_t len;
if (getline(&buf, &bufsz, fp) < 0) {
if (feof(fp))
break;
err(EXIT_FAILURE, _("read failed"));
}
str = (char *) skip_space(buf);
if (str) {
p = strchr(str, '\n');
if (p)
*p = '\0';
}
if (!str || !*str) {
if (ctl->mode == COLUMN_MODE_TABLE && ctl->tab_empty_lines)
add_emptyline_to_table(ctl);
continue;
}
wcs = mbs_to_wcs(buf);
if (!wcs) {
/*
* Convert broken sequences to \x<hex> and continue.
*/
size_t tmpsz = 0;
char *tmp = mbs_invalid_encode(buf, &tmpsz);
if (!tmp)
err(EXIT_FAILURE, _("read failed"));
wcs = mbs_to_wcs(tmp);
free(tmp);
}
switch (ctl->mode) {
case COLUMN_MODE_TABLE:
rc = add_line_to_table(ctl, wcs);
free(wcs);
break;
case COLUMN_MODE_FILLCOLS:
case COLUMN_MODE_FILLROWS:
if (ctl->nents <= maxents) {
maxents += 1000;
ctl->ents = xrealloc(ctl->ents,
maxents * sizeof(wchar_t *));
}
ctl->ents[ctl->nents] = wcs;
len = width(ctl->ents[ctl->nents]);
if (ctl->maxlength < len)
ctl->maxlength = len;
ctl->nents++;
break;
default:
free(wcs);
break;
}
} while (rc == 0);
return rc;
}
static void columnate_fillrows(struct column_control *ctl)
{
size_t chcnt, col, cnt, endcol, numcols;
wchar_t **lp;
ctl->maxlength = (ctl->maxlength + TABCHAR_CELLS) & ~(TABCHAR_CELLS - 1);
numcols = ctl->termwidth / ctl->maxlength;
endcol = ctl->maxlength;
for (chcnt = col = 0, lp = ctl->ents; /* nothing */; ++lp) {
fputws(*lp, stdout);
chcnt += width(*lp);
if (!--ctl->nents)
break;
if (++col == numcols) {
chcnt = col = 0;
endcol = ctl->maxlength;
putwchar('\n');
} else {
while ((cnt = ((chcnt + TABCHAR_CELLS) & ~(TABCHAR_CELLS - 1))) <= endcol) {
putwchar('\t');
chcnt = cnt;
}
endcol += ctl->maxlength;
}
}
if (chcnt)
putwchar('\n');
}
static void columnate_fillcols(struct column_control *ctl)
{
size_t base, chcnt, cnt, col, endcol, numcols, numrows, row;
ctl->maxlength = (ctl->maxlength + TABCHAR_CELLS) & ~(TABCHAR_CELLS - 1);
numcols = ctl->termwidth / ctl->maxlength;
if (!numcols)
numcols = 1;
numrows = ctl->nents / numcols;
if (ctl->nents % numcols)
++numrows;
for (row = 0; row < numrows; ++row) {
endcol = ctl->maxlength;
for (base = row, chcnt = col = 0; col < numcols; ++col) {
fputws(ctl->ents[base], stdout);
chcnt += width(ctl->ents[base]);
if ((base += numrows) >= ctl->nents)
break;
while ((cnt = ((chcnt + TABCHAR_CELLS) & ~(TABCHAR_CELLS - 1))) <= endcol) {
putwchar('\t');
chcnt = cnt;
}
endcol += ctl->maxlength;
}
putwchar('\n');
}
}
static void simple_print(struct column_control *ctl)
{
int cnt;
wchar_t **lp;
for (cnt = ctl->nents, lp = ctl->ents; cnt--; ++lp) {
fputws(*lp, stdout);
putwchar('\n');
}
}
static void __attribute__((__noreturn__)) usage(void)
{
FILE *out = stdout;
fputs(USAGE_HEADER, out);
fprintf(out, _(" %s [options] [<file>...]\n"), program_invocation_short_name);
fputs(USAGE_SEPARATOR, out);
fputs(_("Columnate lists.\n"), out);
fputs(USAGE_OPTIONS, out);
fputs(_(" -t, --table create a table\n"), out);
fputs(_(" -n, --table-name <name> table name for JSON output\n"), out);
fputs(_(" -O, --table-order <columns> specify order of output columns\n"), out);
fputs(_(" -N, --table-columns <names> comma separated columns names\n"), out);
fputs(_(" -E, --table-noextreme <columns> don't count long text from the columns to column width\n"), out);
fputs(_(" -d, --table-noheadings don't print header\n"), out);
fputs(_(" -e, --table-header-repeat repeat header for each page\n"), out);
fputs(_(" -H, --table-hide <columns> don't print the columns\n"), out);
fputs(_(" -R, --table-right <columns> right align text in these columns\n"), out);
fputs(_(" -T, --table-truncate <columns> truncate text in the columns when necessary\n"), out);
fputs(_(" -W, --table-wrap <columns> wrap text in the columns when necessary\n"), out);
fputs(_(" -L, --table-empty-lines don't ignore empty lines\n"), out);
fputs(_(" -J, --json use JSON output format for table\n"), out);
fputs(USAGE_SEPARATOR, out);
fputs(_(" -r, --tree <column> column to use tree-like output for the table\n"), out);
fputs(_(" -i, --tree-id <column> line ID to specify child-parent relation\n"), out);
fputs(_(" -p, --tree-parent <column> parent to specify child-parent relation\n"), out);
fputs(USAGE_SEPARATOR, out);
fputs(_(" -c, --output-width <width> width of output in number of characters\n"), out);
fputs(_(" -o, --output-separator <string> columns separator for table output (default is two spaces)\n"), out);
fputs(_(" -s, --separator <string> possible table delimiters\n"), out);
fputs(_(" -x, --fillrows fill rows before columns\n"), out);
fputs(USAGE_SEPARATOR, out);
printf(USAGE_HELP_OPTIONS(34));
printf(USAGE_MAN_TAIL("column(1)"));
exit(EXIT_SUCCESS);
}
int main(int argc, char **argv)
{
struct column_control ctl = {
.mode = COLUMN_MODE_FILLCOLS,
.greedy = 1,
.termwidth = (size_t) -1
};
int c;
unsigned int eval = 0; /* exit value */
static const struct option longopts[] =
{
{ "columns", required_argument, NULL, 'c' }, /* deprecated */
{ "fillrows", no_argument, NULL, 'x' },
{ "help", no_argument, NULL, 'h' },
{ "json", no_argument, NULL, 'J' },
{ "output-separator", required_argument, NULL, 'o' },
{ "output-width", required_argument, NULL, 'c' },
{ "separator", required_argument, NULL, 's' },
{ "table", no_argument, NULL, 't' },
{ "table-columns", required_argument, NULL, 'N' },
{ "table-hide", required_argument, NULL, 'H' },
{ "table-name", required_argument, NULL, 'n' },
{ "table-noextreme", required_argument, NULL, 'E' },
{ "table-noheadings", no_argument, NULL, 'd' },
{ "table-order", required_argument, NULL, 'O' },
{ "table-right", required_argument, NULL, 'R' },
{ "table-truncate", required_argument, NULL, 'T' },
{ "table-wrap", required_argument, NULL, 'W' },
{ "table-empty-lines", no_argument, NULL, 'L' },
{ "table-header-repeat", no_argument, NULL, 'e' },
{ "tree", required_argument, NULL, 'r' },
{ "tree-id", required_argument, NULL, 'i' },
{ "tree-parent", required_argument, NULL, 'p' },
{ "version", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0 },
};
static const ul_excl_t excl[] = { /* rows and cols in ASCII order */
{ 'J','x' },
{ 't','x' },
{ 0 }
};
int excl_st[ARRAY_SIZE(excl)] = UL_EXCL_STATUS_INIT;
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
close_stdout_atexit();
ctl.output_separator = " ";
ctl.input_separator = mbs_to_wcs("\t ");
while ((c = getopt_long(argc, argv, "c:dE:eH:hi:JLN:n:O:o:p:R:r:s:T:tVW:x", longopts, NULL)) != -1) {
err_exclusive_options(c, longopts, excl, excl_st);
switch(c) {
case 'c':
ctl.termwidth = strtou32_or_err(optarg, _("invalid columns argument"));
break;
case 'd':
ctl.tab_noheadings = 1;
break;
case 'E':
ctl.tab_colnoextrem = optarg;
break;
case 'e':
ctl.header_repeat = 1;
break;
case 'H':
ctl.tab_colhide = optarg;
break;
case 'i':
ctl.tree_id = optarg;
break;
case 'J':
ctl.json = 1;
ctl.mode = COLUMN_MODE_TABLE;
break;
case 'L':
ctl.tab_empty_lines = 1;
break;
case 'N':
ctl.tab_colnames = split_or_error(optarg, _("failed to parse column names"));
break;
case 'n':
ctl.tab_name = optarg;
break;
case 'O':
ctl.tab_order = optarg;
break;
case 'o':
ctl.output_separator = optarg;
break;
case 'p':
ctl.tree_parent = optarg;
break;
case 'R':
ctl.tab_colright = optarg;
break;
case 'r':
ctl.tree = optarg;
break;
case 's':
free(ctl.input_separator);
ctl.input_separator = mbs_to_wcs(optarg);
ctl.greedy = 0;
break;
case 'T':
ctl.tab_coltrunc = optarg;
break;
case 't':
ctl.mode = COLUMN_MODE_TABLE;
break;
case 'W':
ctl.tab_colwrap = optarg;
break;
case 'x':
ctl.mode = COLUMN_MODE_FILLROWS;
break;
case 'h':
usage();
case 'V':
print_version(EXIT_SUCCESS);
default:
errtryhelp(EXIT_FAILURE);
}
}
argc -= optind;
argv += optind;
if (ctl.termwidth == (size_t) -1)
ctl.termwidth = get_terminal_width(80);
if (ctl.tree) {
ctl.mode = COLUMN_MODE_TABLE;
if (!ctl.tree_parent || !ctl.tree_id)
errx(EXIT_FAILURE, _("options --tree-id and --tree-parent are "
"required for tree formatting"));
}
if (ctl.mode != COLUMN_MODE_TABLE
&& (ctl.tab_order || ctl.tab_name || ctl.tab_colwrap ||
ctl.tab_colhide || ctl.tab_coltrunc || ctl.tab_colnoextrem ||
ctl.tab_colright || ctl.tab_colnames))
errx(EXIT_FAILURE, _("option --table required for all --table-*"));
if (ctl.tab_colnames == NULL && ctl.json)
errx(EXIT_FAILURE, _("option --table-columns required for --json"));
if (!*argv)
eval += read_input(&ctl, stdin);
else
for (; *argv; ++argv) {
FILE *fp;
if ((fp = fopen(*argv, "r")) != NULL) {
eval += read_input(&ctl, fp);
fclose(fp);
} else {
warn("%s", *argv);
eval += EXIT_FAILURE;
}
}
if (ctl.mode != COLUMN_MODE_TABLE) {
if (!ctl.nents)
exit(eval);
if (ctl.maxlength >= ctl.termwidth)
ctl.mode = COLUMN_MODE_SIMPLE;
}
switch (ctl.mode) {
case COLUMN_MODE_TABLE:
if (ctl.tab && scols_table_get_nlines(ctl.tab)) {
modify_table(&ctl);
eval = scols_print_table(ctl.tab);
}
break;
case COLUMN_MODE_FILLCOLS:
columnate_fillcols(&ctl);
break;
case COLUMN_MODE_FILLROWS:
columnate_fillrows(&ctl);
break;
case COLUMN_MODE_SIMPLE:
simple_print(&ctl);
break;
}
return eval == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
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