diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 54 |
1 files changed, 52 insertions, 2 deletions
@@ -1,6 +1,6 @@ /* $Id$ */ /* - * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> + * Copyright (c) 2008-2012 Kristaps Dzonsons <kristaps@bsd.lv> * Copyright (c) 2010, 2011, 2012, 2014 Ingo Schwarze <schwarze@openbsd.org> * Copyright (c) 2010 Joerg Sonnenberger <joerg@netbsd.org> * @@ -21,6 +21,7 @@ #include <sys/types.h> #include <assert.h> +#include <errno.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> @@ -84,6 +85,7 @@ static void mmsg(enum mandocerr, enum mandoclevel, const char *, int, int, const char *); static void parse(struct curparse *, int, const char *, enum mandoclevel *); +static void spawn_pager(void); static int toptions(struct curparse *, char *); static void usage(enum argmode) __attribute__((noreturn)); static void version(void) __attribute__((noreturn)); @@ -111,6 +113,7 @@ main(int argc, char *argv[]) enum mandoclevel rc; enum outmode outmode; int show_usage; + int use_pager; int options; int c; @@ -145,9 +148,11 @@ main(int argc, char *argv[]) options = MPARSE_SO; defos = NULL; + use_pager = 1; show_usage = 0; outmode = OUTMODE_DEF; - while (-1 != (c = getopt(argc, argv, "aC:fI:ikM:m:O:S:s:T:VW:w"))) { + + while (-1 != (c = getopt(argc, argv, "aC:cfI:ikM:m:O:S:s:T:VW:w"))) { switch (c) { case 'a': outmode = OUTMODE_ALL; @@ -155,6 +160,9 @@ main(int argc, char *argv[]) case 'C': conf_file = optarg; break; + case 'c': + use_pager = 0; + break; case 'f': search.argmode = ARG_WORD; break; @@ -223,6 +231,7 @@ main(int argc, char *argv[]) switch (search.argmode) { case ARG_FILE: outmode = OUTMODE_ALL; + use_pager = 0; break; case ARG_NAME: outmode = OUTMODE_ONE; @@ -319,6 +328,9 @@ main(int argc, char *argv[]) if ( ! moptions(&options, auxpaths)) return((int)MANDOCLEVEL_BADARG); + if (use_pager && isatty(STDOUT_FILENO)) + spawn_pager(); + curp.mp = mparse_alloc(options, curp.wlevel, mmsg, defos); /* @@ -621,3 +633,41 @@ mmsg(enum mandocerr t, enum mandoclevel lvl, fputc('\n', stderr); } + +static void +spawn_pager(void) +{ + int fildes[2]; + + if (pipe(fildes) == -1) { + fprintf(stderr, "%s: pipe: %s\n", + progname, strerror(errno)); + return; + } + + switch (fork()) { + case -1: + fprintf(stderr, "%s: fork: %s\n", + progname, strerror(errno)); + exit((int)MANDOCLEVEL_SYSERR); + case 0: + close(fildes[0]); + if (dup2(fildes[1], STDOUT_FILENO) == -1) { + fprintf(stderr, "%s: dup output: %s\n", + progname, strerror(errno)); + exit((int)MANDOCLEVEL_SYSERR); + } + return; + default: + close(fildes[1]); + if (dup2(fildes[0], STDIN_FILENO) == -1) { + fprintf(stderr, "%s: dup input: %s\n", + progname, strerror(errno)); + } else { + execlp("more", "more", "-s", NULL); + fprintf(stderr, "%s: exec: %s\n", + progname, strerror(errno)); + } + exit((int)MANDOCLEVEL_SYSERR); + } +} |