libtabular-c

C tabular formatting library
git clone https://git.sinitax.com/sinitax/libtabular-c
Log | Files | Refs | Submodules | sfeed.txt

test.c (2874B)

      1#include "tabular.h"
      2#include "allocator.h"
      3
      4#include <sys/ioctl.h>
      5#include <err.h>
      6#include <string.h>
      7#include <stdbool.h>
      8#include <stdio.h>
      9
     10#define ARRLEN(x) (sizeof(x)/sizeof(*(x)))
     11
     12bool print_style(FILE *file, const struct tabular_cfg *cfg,
     13	const struct tabular_row *row, const struct tabular_col *col);
     14
     15char *col_pos_str(const struct tabular_user *row, const struct tabular_user *col);
     16bool col_pos_hidden(const struct tabular_user *user);
     17
     18char *col_name_str(const struct tabular_user *row, const struct tabular_user *col);
     19bool col_name_hidden(const struct tabular_user *user);
     20
     21static const char **argv = NULL;
     22
     23static struct tabular_col columns[] = {
     24	{
     25		.name = "Pos",
     26
     27		.to_str = col_pos_str,
     28		.is_hidden = NULL,
     29
     30		.minwidth = 3,
     31		.maxwidth = 3,
     32		.lpad = 0,
     33		.rpad = 0,
     34
     35		.align = TABULAR_ALIGN_CENTER,
     36
     37		.strategy = TABULAR_TRUNC,
     38		.essential = true,
     39	},
     40	{
     41		.name = "Value",
     42
     43		.to_str = col_name_str,
     44		.is_hidden = NULL,
     45
     46		.minwidth = 5,
     47		.maxwidth = 80,
     48		.lpad = 0,
     49		.rpad = 0,
     50
     51		.align = TABULAR_ALIGN_LEFT,
     52
     53		.strategy = TABULAR_WRAP_WORDAWARE,
     54		.essential = true,
     55	},
     56};
     57
     58static struct tabular_cfg cfg = {
     59	.colors = 256,
     60
     61	.columns = columns,
     62	.column_count = ARRLEN(columns),
     63
     64	.fit_rows = true,
     65
     66	.hsep = "│ ",
     67	.vsep = "─",
     68	.xsep = "┼─",
     69
     70	.outw = 0,
     71	.outh = 0,
     72
     73	.lpad = 1,
     74	.rpad = 1,
     75
     76	.print_style = print_style,
     77
     78	.skip_lines = 3,
     79
     80	.allocator = &stdlib_heap_allocator
     81};
     82
     83bool
     84print_style(FILE *file, const struct tabular_cfg *cfg,
     85	const struct tabular_row *row, const struct tabular_col *col)
     86{
     87	if (cfg->colors == 256) {
     88		if (!col) { /* separators */
     89			fprintf(file, "\x1b[90m");
     90			return true;
     91		} else if (!row) { /* header */
     92			fprintf(file, "\x1b[1m");
     93			return true;
     94		} else if (!strcmp(col->name, "Name")) {
     95			fprintf(file, "\x1b[35m");
     96			return true;
     97		}
     98	}
     99
    100	return false;
    101}
    102
    103char *
    104col_pos_str(const struct tabular_user *row, const struct tabular_user *col)
    105{
    106	char buf[16];
    107
    108	snprintf(buf, sizeof(buf), "%li", row->id);
    109
    110	return strdup(buf);
    111}
    112
    113char *
    114col_name_str(const struct tabular_user *row, const struct tabular_user *col)
    115{
    116	return strdup(argv[row->id]);
    117}
    118
    119int
    120main(int argc, const char **_argv)
    121{
    122	struct tabular_row *rows, **end;
    123	struct tabular_stats stats;
    124	struct winsize ws;
    125	int i, rc;
    126
    127	argv = _argv;
    128
    129	rc = ioctl(1, TIOCGWINSZ, &ws);
    130	if (!rc) {
    131		cfg.outw = ws.ws_col;
    132		cfg.outh = ws.ws_row;
    133	} else {
    134		cfg.outw = 80;
    135		cfg.outh = 26;
    136	}
    137
    138	rows = NULL;
    139	end = &rows;
    140	for (i = 0; i < argc; i++) {
    141		*end = tabular_alloc_row(&cfg, &rc,
    142			(struct tabular_user) { .id = (size_t) i });
    143		if (!*end) errx(1, "tabular_append_row %i", rc);
    144		end = &(*end)->next;
    145	}
    146
    147	rc = tabular_format(stdout, &cfg, &stats, &rows);
    148	if (rc) errx(1, "tabular_format %i", rc);
    149
    150	printf("\n%lu lines, %lu rows\n",
    151		stats.lines_used, stats.rows_displayed);
    152
    153	tabular_free_rows(&cfg, rows);
    154}