/* $NetBSD: column.c,v 1.12 2005/02/17 17:17:25 xtraeme Exp $ */ /* * Copyright (c) 1989, 1993, 1994 * The Regents of the University of California. All rights reserved. * * 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. 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 #ifndef lint __COPYRIGHT("@(#) Copyright (c) 1989, 1993, 1994\n\ The Regents of the University of California. All rights reserved.\n"); #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "@(#)column.c 8.4 (Berkeley) 5/4/95"; #endif __RCSID("$NetBSD: column.c,v 1.12 2005/02/17 17:17:25 xtraeme Exp $"); #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include void c_columnate(void); void *emalloc(int); void input(FILE *); void maketbl(void); void print(void); void r_columnate(void); void usage(void); int termwidth = 80; /* default terminal width */ int entries; /* number of records */ int eval; /* exit value */ int maxlength; /* longest record */ char **list; /* array of pointers to records */ const char *separator = "\t "; /* field separator for table option */ int main(int argc, char **argv) { struct winsize win; FILE *fp; int ch, tflag, xflag; const char *p; if (ioctl(1, TIOCGWINSZ, &win) == -1 || !win.ws_col) { if ((p = getenv("COLUMNS")) != NULL) termwidth = atoi(p); } else termwidth = win.ws_col; tflag = xflag = 0; while ((ch = getopt(argc, argv, "c:s:tx")) != -1) switch(ch) { case 'c': termwidth = atoi(optarg); break; case 's': separator = optarg; break; case 't': tflag = 1; break; case 'x': xflag = 1; break; case '?': default: usage(); } argc -= optind; argv += optind; if (!*argv) input(stdin); else for (; *argv; ++argv) if ((fp = fopen(*argv, "r")) != NULL) { input(fp); (void)fclose(fp); } else { warn("%s", *argv); eval = 1; } if (!entries) exit(eval); if (tflag) maketbl(); else if (maxlength >= termwidth) print(); else if (xflag) c_columnate(); else r_columnate(); exit(eval); } #define TAB 8 void c_columnate(void) { int chcnt, col, cnt, endcol, numcols; char **lp; maxlength = (maxlength + TAB) & ~(TAB - 1); numcols = termwidth / maxlength; endcol = maxlength; for (chcnt = col = 0, lp = list;; ++lp) { chcnt += printf("%s", *lp); if (!--entries) break; if (++col == numcols) { chcnt = col = 0; endcol = maxlength; putchar('\n'); } else { while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { (void)putchar('\t'); chcnt = cnt; } endcol += maxlength; } } if (chcnt) putchar('\n'); } void r_columnate(void) { int base, chcnt, cnt, col, endcol, numcols, numrows, row; maxlength = (maxlength + TAB) & ~(TAB - 1); numcols = termwidth / maxlength; numrows = entries / numcols; if (entries % numcols) ++numrows; for (row = 0; row < numrows; ++row) { endcol = maxlength; for (base = row, chcnt = col = 0; col < numcols; ++col) { chcnt += printf("%s", list[base]); if ((base += numrows) >= entries) break; while ((cnt = ((chcnt + TAB) & ~(TAB - 1))) <= endcol) { (void)putchar('\t'); chcnt = cnt; } endcol += maxlength; } putchar('\n'); } } void print(void) { int cnt; char **lp; for (cnt = entries, lp = list; cnt--; ++lp) (void)printf("%s\n", *lp); } typedef struct _tbl { char **list; int cols, *len; } TBL; #define DEFCOLS 25 void maketbl(void) { TBL *t; int coloff, cnt; char *p, **lp; int *lens, *nlens, maxcols; TBL *tbl; char **cols, **ncols; t = tbl = emalloc(entries * sizeof(TBL)); cols = emalloc((maxcols = DEFCOLS) * sizeof(char *)); lens = emalloc(maxcols * sizeof(int)); for (cnt = 0, lp = list; cnt < entries; ++cnt, ++lp, ++t) { for (coloff = 0, p = *lp; (cols[coloff] = strtok(p, separator)) != NULL; p = NULL) if (++coloff == maxcols) { if (!(ncols = realloc(cols, (u_int)maxcols + DEFCOLS * sizeof(char *))) || !(nlens = realloc(lens, (u_int)maxcols + DEFCOLS * sizeof(int)))) err(1, "realloc"); cols = ncols; lens = nlens; memset((char *)lens + maxcols * sizeof(int), 0, DEFCOLS * sizeof(int)); maxcols += DEFCOLS; } t->list = emalloc(coloff * sizeof(char *)); t->len = emalloc(coloff * sizeof(int)); for (t->cols = coloff; --coloff >= 0;) { t->list[coloff] = cols[coloff]; t->len[coloff] = strlen(cols[coloff]); if (t->len[coloff] > lens[coloff]) lens[coloff] = t->len[coloff]; } } for (cnt = 0, t = tbl; cnt < entries; ++cnt, ++t) { for (coloff = 0; coloff < t->cols - 1; ++coloff) (void)printf("%s%*s", t->list[coloff], lens[coloff] - t->len[coloff] + 2, " "); (void)printf("%s\n", t->list[coloff]); } } #define DEFNUM 1000 #define MAXLINELEN (LINE_MAX + 1) void input(FILE *fp) { static int maxentry; int len; char *p, buf[MAXLINELEN]; char **n; if (!list) list = emalloc((maxentry = DEFNUM) * sizeof(char *)); while (fgets(buf, MAXLINELEN, fp)) { for (p = buf; *p && isspace((unsigned char)*p); ++p); if (!*p) continue; if (!(p = strchr(p, '\n'))) { warnx("line too long"); eval = 1; continue; } *p = '\0'; len = p - buf; if (maxlength < len) maxlength = len; if (entries == maxentry) { maxentry += DEFNUM; if (!(n = realloc(list, (u_int)maxentry * sizeof(char *)))) err(1, "realloc"); list = n; } list[entries++] = strdup(buf); } } void * emalloc(int size) { char *p; if (!(p = malloc(size))) err(1, "malloc"); memset(p, 0, size); return (p); } void usage(void) { (void)fprintf(stderr, "usage: column [-tx] [-c columns] [-s sep] [file ...]\n"); exit(1); }