=================================================================== RCS file: /cvs/mandoc/main.c,v retrieving revision 1.20 retrieving revision 1.334 diff -u -p -r1.20 -r1.334 --- mandoc/main.c 2009/04/02 16:37:40 1.20 +++ mandoc/main.c 2019/07/26 21:03:19 1.334 @@ -1,686 +1,1263 @@ -/* $Id: main.c,v 1.20 2009/04/02 16:37:40 kristaps Exp $ */ +/* $Id: main.c,v 1.334 2019/07/26 21:03:19 schwarze Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2008-2012 Kristaps Dzonsons + * Copyright (c) 2010-2012, 2014-2019 Ingo Schwarze + * Copyright (c) 2010 Joerg Sonnenberger * * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the - * above copyright notice and this permission notice appear in all - * copies. + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL - * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE - * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR - * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER - * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR - * PERFORMANCE OF THIS SOFTWARE. + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include "config.h" + +#include +#include +#include /* MACHINE */ #include +#include #include +#include +#if HAVE_ERR #include +#endif +#include #include +#include +#if HAVE_SANDBOX_INIT +#include +#endif +#include #include +#include #include #include +#include +#include #include +#include "mandoc_aux.h" +#include "mandoc.h" +#include "mandoc_xr.h" +#include "roff.h" #include "mdoc.h" #include "man.h" +#include "mandoc_parse.h" +#include "tag.h" +#include "main.h" +#include "manconf.h" +#include "mansearch.h" -/* Account for FreeBSD and Linux in our declarations. */ - -#ifdef __linux__ -extern int getsubopt(char **, char * const *, char **); -# ifndef __dead -# define __dead __attribute__((__noreturn__)) -# endif -#elif defined(__dead2) -# ifndef __dead -# define __dead __dead2 -# endif -#endif - -struct buf { - char *buf; - size_t sz; +enum outmode { + OUTMODE_DEF = 0, + OUTMODE_FLN, + OUTMODE_LST, + OUTMODE_ALL, + OUTMODE_ONE }; -enum intt { - INTT_AUTO, - INTT_MDOC, - INTT_MAN -}; - enum outt { - OUTT_ASCII = 0, - OUTT_TREE, - OUTT_LINT + OUTT_ASCII = 0, /* -Tascii */ + OUTT_LOCALE, /* -Tlocale */ + OUTT_UTF8, /* -Tutf8 */ + OUTT_TREE, /* -Ttree */ + OUTT_MAN, /* -Tman */ + OUTT_HTML, /* -Thtml */ + OUTT_MARKDOWN, /* -Tmarkdown */ + OUTT_LINT, /* -Tlint */ + OUTT_PS, /* -Tps */ + OUTT_PDF /* -Tpdf */ }; struct curparse { - const char *file; - int fd; - int wflags; -#define WARN_WALL 0x03 /* All-warnings mask. */ -#define WARN_WCOMPAT (1 << 0) /* Compatibility warnings. */ -#define WARN_WSYNTAX (1 << 1) /* Syntax warnings. */ -#define WARN_WERR (1 << 2) /* Warnings->errors. */ - int fflags; - enum intt inttype; - struct man *man; - struct mdoc *mdoc; + struct manoutput *outopts; /* output options */ + void *outdata; /* data for output */ + int wstop; /* stop after a file with a warning */ + enum outt outtype; /* which output to use */ }; -#define IGN_SCOPE (1 << 0) /* Ignore scope errors. */ -#define IGN_ESCAPE (1 << 1) /* Ignore bad escapes. */ -#define IGN_MACRO (1 << 2) /* Ignore unknown macros. */ -#define NO_IGN_MACRO (1 << 3) -typedef int (*out_run)(void *, const struct man *, - const struct mdoc *); -typedef void (*out_free)(void *); +int mandocdb(int, char *[]); -extern char *__progname; - -extern void *ascii_alloc(void); -extern int terminal_run(void *, const struct man *, - const struct mdoc *); -extern int tree_run(void *, const struct man *, - const struct mdoc *); -extern void terminal_free(void *); - -static int foptions(int *, char *); -static int toptions(enum outt *, char *); -static int moptions(enum intt *, char *); -static int woptions(int *, char *); -static int merr(void *, int, int, const char *); -static int manwarn(void *, int, int, const char *); -static int mdocwarn(void *, int, int, - enum mdoc_warn, const char *); -static int fstdin(struct buf *, struct buf *, +static void check_xr(void); +static int fs_lookup(const struct manpaths *, + size_t ipath, const char *, + const char *, const char *, + struct manpage **, size_t *); +static int fs_search(const struct mansearch *, + const struct manpaths *, int, char**, + struct manpage **, size_t *); +static void outdata_alloc(struct curparse *); +static void parse(struct mparse *, int, const char *, struct curparse *); -static int ffile(struct buf *, struct buf *, - const char *, struct curparse *); -static int fdesc(struct buf *, struct buf *, - struct curparse *); -static int pset(const char *, size_t, struct curparse *, - struct man **, struct mdoc **); -static struct man *man_init(struct curparse *); -static struct mdoc *mdoc_init(struct curparse *); -__dead static void version(void); -__dead static void usage(void); +static void passthrough(int, int); +static void run_pager(struct tag_files *); +static pid_t spawn_pager(struct tag_files *); +static void usage(enum argmode) __attribute__((__noreturn__)); +static int woptions(char *, enum mandoc_os *, int *); +static const int sec_prios[] = {1, 4, 5, 8, 6, 3, 7, 2, 9}; +static char help_arg[] = "help"; +static char *help_argv[] = {help_arg, NULL}; + int main(int argc, char *argv[]) { - int c, rc; - void *outdata; - enum outt outtype; - struct buf ln, blk; - out_run outrun; - out_free outfree; + struct manconf conf; /* Manpaths and output options. */ struct curparse curp; + struct winsize ws; /* Result of ioctl(TIOCGWINSZ). */ + struct mansearch search; /* Search options. */ + struct manpage *res, *resp; /* Search results. */ + struct mparse *mp; /* Opaque parser object. */ + struct tag_files *tag_files; /* Tagging state variables. */ + const char *conf_file; /* -C: alternate config file. */ + const char *os_s; /* -I: Operating system for display. */ + const char *progname, *sec, *thisarg; + char *defpaths; /* -M: override manpaths. */ + char *auxpaths; /* -m: additional manpaths. */ + char *oarg; /* -O: output option string. */ + char *tagarg; /* -O tag: default value. */ + unsigned char *uc; + size_t sz; /* Number of elements in res[]. */ + size_t i, ssz; + int options; /* Parser options. */ + int show_usage; /* Invalid argument: give up. */ + int use_pager; /* According to command line. */ + int prio, best_prio; + int fd, startdir; + int c; + enum mandoc_os os_e; /* Check base system conventions. */ + enum outmode outmode; /* According to command line. */ - outtype = OUTT_ASCII; +#if HAVE_PROGNAME + progname = getprogname(); +#else + if (argc < 1) + progname = mandoc_strdup("mandoc"); + else if ((progname = strrchr(argv[0], '/')) == NULL) + progname = argv[0]; + else + ++progname; + setprogname(progname); +#endif - bzero(&curp, sizeof(struct curparse)); + mandoc_msg_setoutfile(stderr); + if (strncmp(progname, "mandocdb", 8) == 0 || + strcmp(progname, BINM_MAKEWHATIS) == 0) + return mandocdb(argc, argv); - curp.inttype = INTT_AUTO; +#if HAVE_PLEDGE + if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, "%s", strerror(errno)); + return mandoc_msg_getrc(); + } +#endif +#if HAVE_SANDBOX_INIT + if (sandbox_init(kSBXProfileNoInternet, SANDBOX_NAMED, NULL) == -1) + errx((int)MANDOCLEVEL_SYSERR, "sandbox_init"); +#endif - /* LINTED */ - while (-1 != (c = getopt(argc, argv, "f:m:VW:T:"))) + /* Search options. */ + + memset(&conf, 0, sizeof(conf)); + conf_file = NULL; + defpaths = auxpaths = NULL; + + memset(&search, 0, sizeof(struct mansearch)); + search.outkey = "Nd"; + oarg = NULL; + + if (strcmp(progname, BINM_MAN) == 0) + search.argmode = ARG_NAME; + else if (strcmp(progname, BINM_APROPOS) == 0) + search.argmode = ARG_EXPR; + else if (strcmp(progname, BINM_WHATIS) == 0) + search.argmode = ARG_WORD; + else if (strncmp(progname, "help", 4) == 0) + search.argmode = ARG_NAME; + else + search.argmode = ARG_FILE; + + /* Parser and formatter options. */ + + os_e = MANDOC_OS_OTHER; + os_s = NULL; + memset(&curp, 0, sizeof(struct curparse)); + curp.outtype = OUTT_LOCALE; + curp.outopts = &conf.output; + options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1; + + use_pager = 1; + tag_files = NULL; + show_usage = 0; + outmode = OUTMODE_DEF; + + while ((c = getopt(argc, argv, + "aC:cfhI:iK:klM:m:O:S:s:T:VW:w")) != -1) { + if (c == 'i' && search.argmode == ARG_EXPR) { + optind--; + break; + } switch (c) { - case ('f'): - if ( ! foptions(&curp.fflags, optarg)) - return(0); + case 'a': + outmode = OUTMODE_ALL; break; - case ('m'): - if ( ! moptions(&curp.inttype, optarg)) - return(0); + case 'C': + conf_file = optarg; break; - case ('T'): - if ( ! toptions(&outtype, optarg)) - return(0); + case 'c': + use_pager = 0; break; - case ('W'): - if ( ! woptions(&curp.wflags, optarg)) - return(0); + case 'f': + search.argmode = ARG_WORD; break; - case ('V'): - version(); - /* NOTREACHED */ + case 'h': + conf.output.synopsisonly = 1; + use_pager = 0; + outmode = OUTMODE_ALL; + break; + case 'I': + if (strncmp(optarg, "os=", 3) != 0) { + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, + "-I %s", optarg); + return mandoc_msg_getrc(); + } + if (os_s != NULL) { + mandoc_msg(MANDOCERR_BADARG_DUPE, 0, 0, + "-I %s", optarg); + return mandoc_msg_getrc(); + } + os_s = optarg + 3; + break; + case 'K': + options &= ~(MPARSE_UTF8 | MPARSE_LATIN1); + if (strcmp(optarg, "utf-8") == 0) + options |= MPARSE_UTF8; + else if (strcmp(optarg, "iso-8859-1") == 0) + options |= MPARSE_LATIN1; + else if (strcmp(optarg, "us-ascii") != 0) { + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, + "-K %s", optarg); + return mandoc_msg_getrc(); + } + break; + case 'k': + search.argmode = ARG_EXPR; + break; + case 'l': + search.argmode = ARG_FILE; + outmode = OUTMODE_ALL; + break; + case 'M': + defpaths = optarg; + break; + case 'm': + auxpaths = optarg; + break; + case 'O': + oarg = optarg; + break; + case 'S': + search.arch = optarg; + break; + case 's': + search.sec = optarg; + break; + case 'T': + if (strcmp(optarg, "ascii") == 0) + curp.outtype = OUTT_ASCII; + else if (strcmp(optarg, "lint") == 0) { + curp.outtype = OUTT_LINT; + mandoc_msg_setoutfile(stdout); + mandoc_msg_setmin(MANDOCERR_BASE); + } else if (strcmp(optarg, "tree") == 0) + curp.outtype = OUTT_TREE; + else if (strcmp(optarg, "man") == 0) + curp.outtype = OUTT_MAN; + else if (strcmp(optarg, "html") == 0) + curp.outtype = OUTT_HTML; + else if (strcmp(optarg, "markdown") == 0) + curp.outtype = OUTT_MARKDOWN; + else if (strcmp(optarg, "utf8") == 0) + curp.outtype = OUTT_UTF8; + else if (strcmp(optarg, "locale") == 0) + curp.outtype = OUTT_LOCALE; + else if (strcmp(optarg, "ps") == 0) + curp.outtype = OUTT_PS; + else if (strcmp(optarg, "pdf") == 0) + curp.outtype = OUTT_PDF; + else { + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, + "-T %s", optarg); + return mandoc_msg_getrc(); + } + break; + case 'W': + if (woptions(optarg, &os_e, &curp.wstop) == -1) + return mandoc_msg_getrc(); + break; + case 'w': + outmode = OUTMODE_FLN; + break; default: - usage(); - /* NOTREACHED */ + show_usage = 1; + break; } + } - argc -= optind; - argv += optind; + if (show_usage) + usage(search.argmode); - /* - * Allocate the appropriate front-end. Note that utf8, latin1 - * (both not yet implemented) and ascii all resolve to the - * terminal front-end with different encodings (see terminal.c). - * Not all frontends have cleanup or alloc routines. - */ + /* Postprocess options. */ - switch (outtype) { - case (OUTT_TREE): - outdata = NULL; - outrun = tree_run; - outfree = NULL; - break; - case (OUTT_LINT): - outdata = NULL; - outrun = NULL; - outfree = NULL; - break; - default: - outdata = ascii_alloc(); - outrun = terminal_run; - outfree = terminal_free; - break; + if (outmode == OUTMODE_DEF) { + switch (search.argmode) { + case ARG_FILE: + outmode = OUTMODE_ALL; + use_pager = 0; + break; + case ARG_NAME: + outmode = OUTMODE_ONE; + break; + default: + outmode = OUTMODE_LST; + break; + } } - /* Configure buffers. */ + if (oarg != NULL) { + if (outmode == OUTMODE_LST) + search.outkey = oarg; + else { + while (oarg != NULL) { + if (manconf_output(&conf.output, + strsep(&oarg, ","), 0) == -1) + return mandoc_msg_getrc(); + } + } + } - bzero(&ln, sizeof(struct buf)); - bzero(&blk, sizeof(struct buf)); + if (curp.outtype != OUTT_TREE || !curp.outopts->noval) + options |= MPARSE_VALIDATE; + if (outmode == OUTMODE_FLN || + outmode == OUTMODE_LST || + !isatty(STDOUT_FILENO)) + use_pager = 0; + + if (use_pager && + (conf.output.width == 0 || conf.output.indent == 0) && + ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1 && + ws.ws_col > 1) { + if (conf.output.width == 0 && ws.ws_col < 79) + conf.output.width = ws.ws_col - 1; + if (conf.output.indent == 0 && ws.ws_col < 66) + conf.output.indent = 3; + } + +#if HAVE_PLEDGE + if (use_pager == 0) { + if (pledge("stdio rpath", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, + "%s", strerror(errno)); + return mandoc_msg_getrc(); + } + } +#endif + + /* Parse arguments. */ + + if (argc > 0) { + argc -= optind; + argv += optind; + } + resp = NULL; + /* - * Main loop around available files. + * Quirks for help(1) + * and for a man(1) section argument without -s. */ - if (NULL == *argv) { - rc = 0; - c = fstdin(&blk, &ln, &curp); - - if (c && NULL == outrun) - rc = 1; - /*else if (c && outrun && (*outrun)(outdata, curp.man, curp.mdoc)) - rc = 1;*/ - } else { - while (*argv) { - c = ffile(&blk, &ln, *argv, &curp); - if ( ! c) - break; - /*if (outrun && ! (*outrun)(outdata, curp.man, curp.mdoc)) - break;*/ - if (curp.man) - man_reset(curp.man); - if (curp.mdoc && ! mdoc_reset(curp.mdoc)) { - warnx("memory exhausted"); - break; + if (search.argmode == ARG_NAME) { + if (*progname == 'h') { + if (argc == 0) { + argv = help_argv; + argc = 1; } + } else if (argc > 1 && + ((uc = (unsigned char *)argv[0]) != NULL) && + ((isdigit(uc[0]) && (uc[1] == '\0' || + isalpha(uc[1]))) || + (uc[0] == 'n' && uc[1] == '\0'))) { + search.sec = (char *)uc; argv++; + argc--; } - rc = NULL == *argv; + if (search.arch == NULL) + search.arch = getenv("MACHINE"); +#ifdef MACHINE + if (search.arch == NULL) + search.arch = MACHINE; +#endif } - if (blk.buf) - free(blk.buf); - if (ln.buf) - free(ln.buf); - if (outfree) - (*outfree)(outdata); - if (curp.mdoc) - mdoc_free(curp.mdoc); - if (curp.man) - man_free(curp.man); + /* + * Use the first argument for -O tag in addition to + * using it as a search term for man(1) or apropos(1). + */ - return(rc ? EXIT_SUCCESS : EXIT_FAILURE); -} + if (conf.output.tag != NULL && *conf.output.tag == '\0') { + tagarg = argc > 0 && search.argmode == ARG_EXPR ? + strchr(*argv, '=') : NULL; + conf.output.tag = tagarg == NULL ? *argv : tagarg + 1; + } + /* man(1), whatis(1), apropos(1) */ -__dead static void -version(void) -{ + if (search.argmode != ARG_FILE) { + if (search.argmode == ARG_NAME && + outmode == OUTMODE_ONE) + search.firstmatch = 1; - (void)printf("%s %s\n", __progname, VERSION); - exit(EXIT_SUCCESS); -} + /* Access the mandoc database. */ + manconf_parse(&conf, conf_file, defpaths, auxpaths); + if ( ! mansearch(&search, &conf.manpath, + argc, argv, &res, &sz)) + usage(search.argmode); -__dead static void -usage(void) -{ + if (sz == 0 && search.argmode == ARG_NAME) + (void)fs_search(&search, &conf.manpath, + argc, argv, &res, &sz); - (void)fprintf(stderr, "usage: %s [-V] [-foption...] " - "[-mformat] [-Toutput] [-Werr...]\n", - __progname); - exit(EXIT_FAILURE); -} + if (search.argmode == ARG_NAME) { + for (c = 0; c < argc; c++) { + if (strchr(argv[c], '/') == NULL) + continue; + if (access(argv[c], R_OK) == -1) { + mandoc_msg_setinfilename(argv[c]); + mandoc_msg(MANDOCERR_BADARG_BAD, + 0, 0, "%s", strerror(errno)); + mandoc_msg_setinfilename(NULL); + continue; + } + res = mandoc_reallocarray(res, + sz + 1, sizeof(*res)); + res[sz].file = mandoc_strdup(argv[c]); + res[sz].names = NULL; + res[sz].output = NULL; + res[sz].bits = 0; + res[sz].ipath = SIZE_MAX; + res[sz].sec = 10; + res[sz].form = FORM_SRC; + sz++; + } + } + if (sz == 0) { + if (search.argmode != ARG_NAME) + warnx("nothing appropriate"); + mandoc_msg_setrc(MANDOCLEVEL_BADARG); + goto out; + } -static struct man * -man_init(struct curparse *curp) -{ - int pflags; - struct man *man; - struct man_cb mancb; + /* + * For standard man(1) and -a output mode, + * prepare for copying filename pointers + * into the program parameter array. + */ - mancb.man_err = merr; - mancb.man_warn = manwarn; + if (outmode == OUTMODE_ONE) { + argc = 1; + best_prio = 40; + } else if (outmode == OUTMODE_ALL) + argc = (int)sz; - /* Set command defaults. */ - pflags = MAN_IGN_MACRO; + /* Iterate all matching manuals. */ - if (curp->fflags & IGN_MACRO) - pflags |= MAN_IGN_MACRO; - if (curp->fflags & NO_IGN_MACRO) - pflags &= ~MAN_IGN_MACRO; + resp = res; + for (i = 0; i < sz; i++) { + if (outmode == OUTMODE_FLN) + puts(res[i].file); + else if (outmode == OUTMODE_LST) + printf("%s - %s\n", res[i].names, + res[i].output == NULL ? "" : + res[i].output); + else if (outmode == OUTMODE_ONE) { + /* Search for the best section. */ + sec = res[i].file; + sec += strcspn(sec, "123456789"); + if (sec[0] == '\0') + continue; /* No section at all. */ + prio = sec_prios[sec[0] - '1']; + if (search.sec != NULL) { + ssz = strlen(search.sec); + if (strncmp(sec, search.sec, ssz) == 0) + sec += ssz; + } else + sec++; /* Prefer without suffix. */ + if (*sec != '/') + prio += 10; /* Wrong dir name. */ + if (search.sec != NULL && + (strlen(sec) <= ssz + 3 || + strcmp(sec + strlen(sec) - ssz, + search.sec) != 0)) + prio += 20; /* Wrong file ext. */ + if (prio >= best_prio) + continue; + best_prio = prio; + resp = res + i; + } + } - if (NULL == (man = man_alloc(curp, pflags, &mancb))) - warnx("memory exhausted"); + /* + * For man(1), -a and -i output mode, fall through + * to the main mandoc(1) code iterating files + * and running the parsers on each of them. + */ - return(man); -} + if (outmode == OUTMODE_FLN || outmode == OUTMODE_LST) + goto out; + } + /* mandoc(1) */ -static struct mdoc * -mdoc_init(struct curparse *curp) -{ - int pflags; - struct mdoc *mdoc; - struct mdoc_cb mdoccb; +#if HAVE_PLEDGE + if (use_pager) { + if (pledge("stdio rpath tmppath tty proc exec", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, + "%s", strerror(errno)); + return mandoc_msg_getrc(); + } + } else { + if (pledge("stdio rpath", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, + "%s", strerror(errno)); + return mandoc_msg_getrc(); + } + } +#endif - mdoccb.mdoc_msg = NULL; - mdoccb.mdoc_err = merr; - mdoccb.mdoc_warn = mdocwarn; + if (search.argmode == ARG_FILE && auxpaths != NULL) { + if (strcmp(auxpaths, "doc") == 0) + options |= MPARSE_MDOC; + else if (strcmp(auxpaths, "an") == 0) + options |= MPARSE_MAN; + } - pflags = 0; + mchars_alloc(); + mp = mparse_alloc(options, os_e, os_s); - if (curp->fflags & IGN_SCOPE) - pflags |= MDOC_IGN_SCOPE; - if (curp->fflags & IGN_ESCAPE) - pflags |= MDOC_IGN_ESCAPE; - if (curp->fflags & IGN_MACRO) - pflags |= MDOC_IGN_MACRO; + if (argc < 1) { + if (use_pager) { + tag_files = tag_init(); + if (tag_files != NULL) + tag_files->tagname = conf.output.tag; + } + thisarg = ""; + mandoc_msg_setinfilename(thisarg); + parse(mp, STDIN_FILENO, thisarg, &curp); + mandoc_msg_setinfilename(NULL); + } - if (NULL == (mdoc = mdoc_alloc(curp, pflags, &mdoccb))) - warnx("memory allocated"); + /* + * Remember the original working directory, if possible. + * This will be needed if some names on the command line + * are page names and some are relative file names. + * Do not error out if the current directory is not + * readable: Maybe it won't be needed after all. + */ + startdir = open(".", O_RDONLY | O_DIRECTORY); - return(mdoc); -} + while (argc > 0) { + /* + * Changing directories is not needed in ARG_FILE mode. + * Do it on a best-effort basis. Even in case of + * failure, some functionality may still work. + */ + if (resp != NULL) { + if (resp->ipath != SIZE_MAX) + (void)chdir(conf.manpath.paths[resp->ipath]); + else if (startdir != -1) + (void)fchdir(startdir); + thisarg = resp->file; + } else + thisarg = *argv; -static int -fstdin(struct buf *blk, struct buf *ln, struct curparse *curp) -{ + mandoc_msg_setinfilename(thisarg); + fd = mparse_open(mp, thisarg); + if (fd != -1) { + if (use_pager) { + use_pager = 0; + tag_files = tag_init(); + if (tag_files != NULL) + tag_files->tagname = conf.output.tag; + } - curp->file = ""; - curp->fd = STDIN_FILENO; - return(fdesc(blk, ln, curp)); -} + if (resp == NULL || resp->form == FORM_SRC) + parse(mp, fd, thisarg, &curp); + else + passthrough(fd, conf.output.synopsisonly); + if (ferror(stdout)) { + if (tag_files != NULL) { + mandoc_msg(MANDOCERR_WRITE, 0, 0, + "%s: %s", tag_files->ofn, + strerror(errno)); + tag_unlink(); + tag_files = NULL; + } else + mandoc_msg(MANDOCERR_WRITE, 0, 0, + "%s", strerror(errno)); + break; + } -static int -ffile(struct buf *blk, struct buf *ln, - const char *file, struct curparse *curp) -{ - int c; + if (argc > 1 && curp.outtype <= OUTT_UTF8) { + if (curp.outdata == NULL) + outdata_alloc(&curp); + terminal_sepline(curp.outdata); + } + } else + mandoc_msg(resp == NULL ? MANDOCERR_BADARG_BAD : + MANDOCERR_OPEN, 0, 0, "%s", strerror(errno)); - curp->file = file; - if (-1 == (curp->fd = open(curp->file, O_RDONLY, 0))) { - warn("%s", curp->file); - return(0); + mandoc_msg_setinfilename(NULL); + + if (curp.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK) + break; + + if (resp != NULL) + resp++; + else + argv++; + if (--argc) + mparse_reset(mp); } + if (startdir != -1) { + (void)fchdir(startdir); + close(startdir); + } - c = fdesc(blk, ln, curp); + if (curp.outdata != NULL) { + switch (curp.outtype) { + case OUTT_HTML: + html_free(curp.outdata); + break; + case OUTT_UTF8: + case OUTT_LOCALE: + case OUTT_ASCII: + ascii_free(curp.outdata); + break; + case OUTT_PDF: + case OUTT_PS: + pspdf_free(curp.outdata); + break; + default: + break; + } + } + mandoc_xr_free(); + mparse_free(mp); + mchars_free(); - if (-1 == close(curp->fd)) - warn("%s", curp->file); +out: + if (search.argmode != ARG_FILE) { + manconf_free(&conf); + mansearch_free(res, sz); + } - return(c); + if (tag_files != NULL) { + fclose(stdout); + tag_write(); + run_pager(tag_files); + tag_unlink(); + } else if (curp.outtype != OUTT_LINT && + (search.argmode == ARG_FILE || sz > 0)) + mandoc_msg_summary(); + + return (int)mandoc_msg_getrc(); } +static void +usage(enum argmode argmode) +{ + switch (argmode) { + case ARG_FILE: + fputs("usage: mandoc [-ac] [-I os=name] " + "[-K encoding] [-mdoc | -man] [-O options]\n" + "\t [-T output] [-W level] [file ...]\n", stderr); + break; + case ARG_NAME: + fputs("usage: man [-acfhklw] [-C file] [-M path] " + "[-m path] [-S subsection]\n" + "\t [[-s] section] name ...\n", stderr); + break; + case ARG_WORD: + fputs("usage: whatis [-afk] [-C file] " + "[-M path] [-m path] [-O outkey] [-S arch]\n" + "\t [-s section] name ...\n", stderr); + break; + case ARG_EXPR: + fputs("usage: apropos [-afk] [-C file] " + "[-M path] [-m path] [-O outkey] [-S arch]\n" + "\t [-s section] expression ...\n", stderr); + break; + } + exit((int)MANDOCLEVEL_BADARG); +} static int -fdesc(struct buf *blk, struct buf *ln, struct curparse *curp) +fs_lookup(const struct manpaths *paths, size_t ipath, + const char *sec, const char *arch, const char *name, + struct manpage **res, size_t *ressz) { - size_t sz; - ssize_t ssz; - struct stat st; - int j, i, pos, lnn; - struct man *man; - struct mdoc *mdoc; + struct stat sb; + glob_t globinfo; + struct manpage *page; + char *file; + int globres; + enum form form; - sz = BUFSIZ; - man = NULL; - mdoc = NULL; + form = FORM_SRC; + mandoc_asprintf(&file, "%s/man%s/%s.%s", + paths->paths[ipath], sec, name, sec); + if (stat(file, &sb) != -1) + goto found; + free(file); - /* - * Two buffers: ln and buf. buf is the input buffer optimised - * here for each file's block size. ln is a line buffer. Both - * growable, hence passed in by ptr-ptr. - */ + mandoc_asprintf(&file, "%s/cat%s/%s.0", + paths->paths[ipath], sec, name); + if (stat(file, &sb) != -1) { + form = FORM_CAT; + goto found; + } + free(file); - if (-1 == fstat(curp->fd, &st)) - warnx("%s", curp->file); - else if ((size_t)st.st_blksize > sz) - sz = st.st_blksize; + if (arch != NULL) { + mandoc_asprintf(&file, "%s/man%s/%s/%s.%s", + paths->paths[ipath], sec, arch, name, sec); + if (stat(file, &sb) != -1) + goto found; + free(file); + } - if (sz > blk->sz) { - blk->buf = realloc(blk->buf, sz); - if (NULL == blk->buf) { - warn("realloc"); - return(0); - } - blk->sz = sz; + mandoc_asprintf(&file, "%s/man%s/%s.[01-9]*", + paths->paths[ipath], sec, name); + globres = glob(file, 0, NULL, &globinfo); + if (globres != 0 && globres != GLOB_NOMATCH) + mandoc_msg(MANDOCERR_GLOB, 0, 0, + "%s: %s", file, strerror(errno)); + free(file); + if (globres == 0) + file = mandoc_strdup(*globinfo.gl_pathv); + globfree(&globinfo); + if (globres == 0) { + if (stat(file, &sb) != -1) + goto found; + free(file); } + if (res != NULL || ipath + 1 != paths->sz) + return -1; - /* Fill buf with file blocksize. */ + mandoc_asprintf(&file, "%s.%s", name, sec); + globres = stat(file, &sb); + free(file); + return globres; - for (lnn = 0, pos = 0; ; ) { - if (-1 == (ssz = read(curp->fd, blk->buf, sz))) { - warn("%s", curp->file); - return(0); - } else if (0 == ssz) - break; +found: + warnx("outdated mandoc.db lacks %s(%s) entry, run %s %s", + name, sec, BINM_MAKEWHATIS, paths->paths[ipath]); + if (res == NULL) { + free(file); + return 0; + } + *res = mandoc_reallocarray(*res, ++*ressz, sizeof(**res)); + page = *res + (*ressz - 1); + page->file = file; + page->names = NULL; + page->output = NULL; + page->bits = NAME_FILE & NAME_MASK; + page->ipath = ipath; + page->sec = (*sec >= '1' && *sec <= '9') ? *sec - '1' + 1 : 10; + page->form = form; + return 0; +} - /* Parse the read block into partial or full lines. */ +static int +fs_search(const struct mansearch *cfg, const struct manpaths *paths, + int argc, char **argv, struct manpage **res, size_t *ressz) +{ + const char *const sections[] = + {"1", "8", "6", "2", "3", "5", "7", "4", "9", "3p"}; + const size_t nsec = sizeof(sections)/sizeof(sections[0]); - for (i = 0; i < (int)ssz; i++) { - if (pos >= (int)ln->sz) { - ln->sz += 256; /* Step-size. */ - ln->buf = realloc(ln->buf, ln->sz); - if (NULL == ln->buf) { - warn("realloc"); - return(0); - } - } + size_t ipath, isec, lastsz; - if ('\n' != blk->buf[i]) { - ln->buf[pos++] = blk->buf[i]; - continue; - } + assert(cfg->argmode == ARG_NAME); - /* Check for CPP-escaped newline. */ + if (res != NULL) + *res = NULL; + *ressz = lastsz = 0; + while (argc) { + for (ipath = 0; ipath < paths->sz; ipath++) { + if (cfg->sec != NULL) { + if (fs_lookup(paths, ipath, cfg->sec, + cfg->arch, *argv, res, ressz) != -1 && + cfg->firstmatch) + return 0; + } else for (isec = 0; isec < nsec; isec++) + if (fs_lookup(paths, ipath, sections[isec], + cfg->arch, *argv, res, ressz) != -1 && + cfg->firstmatch) + return 0; + } + if (res != NULL && *ressz == lastsz && + strchr(*argv, '/') == NULL) { + if (cfg->arch != NULL && + arch_valid(cfg->arch, OSENUM) == 0) + warnx("Unknown architecture \"%s\".", + cfg->arch); + else if (cfg->sec == NULL) + warnx("No entry for %s in the manual.", + *argv); + else + warnx("No entry for %s in section %s " + "of the manual.", *argv, cfg->sec); + } + lastsz = *ressz; + argv++; + argc--; + } + return -1; +} - if (pos > 0 && '\\' == ln->buf[pos - 1]) { - for (j = pos - 1; j >= 0; j--) - if ('\\' != ln->buf[j]) - break; +static void +parse(struct mparse *mp, int fd, const char *file, struct curparse *curp) +{ + struct roff_meta *meta; - if ( ! ((pos - j) % 2)) { - pos--; - lnn++; - continue; - } - } + /* Begin by parsing the file itself. */ - ln->buf[pos] = 0; - lnn++; - - /* - * If no manual parser has been assigned, then - * try to assign one in pset(), which may do - * nothing at all. After this, parse the manual - * line accordingly. - */ + assert(file); + assert(fd >= 0); - if ( ! (man || mdoc) && ! pset(ln->buf, - pos, curp, &man, &mdoc)) - return(0); + mparse_readfd(mp, fd, file); + if (fd != STDIN_FILENO) + close(fd); - pos = 0; + /* + * With -Wstop and warnings or errors of at least the requested + * level, do not produce output. + */ - if (man && ! man_parseln(man, lnn, ln->buf)) - return(0); - if (mdoc && ! mdoc_parseln(mdoc, lnn, ln->buf)) - return(0); - } - } + if (curp->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK) + return; - /* Note that a parser may not have been assigned, yet. */ + if (curp->outdata == NULL) + outdata_alloc(curp); + else if (curp->outtype == OUTT_HTML) + html_reset(curp); - if (mdoc) - return(mdoc_endparse(mdoc)); - if (man) - return(man_endparse(man)); + mandoc_xr_reset(); + meta = mparse_result(mp); - warnx("%s: not a manual", curp->file); - return(0); + /* Execute the out device, if it exists. */ + + if (meta->macroset == MACROSET_MDOC) { + switch (curp->outtype) { + case OUTT_HTML: + html_mdoc(curp->outdata, meta); + break; + case OUTT_TREE: + tree_mdoc(curp->outdata, meta); + break; + case OUTT_MAN: + man_mdoc(curp->outdata, meta); + break; + case OUTT_PDF: + case OUTT_ASCII: + case OUTT_UTF8: + case OUTT_LOCALE: + case OUTT_PS: + terminal_mdoc(curp->outdata, meta); + break; + case OUTT_MARKDOWN: + markdown_mdoc(curp->outdata, meta); + break; + default: + break; + } + } + if (meta->macroset == MACROSET_MAN) { + switch (curp->outtype) { + case OUTT_HTML: + html_man(curp->outdata, meta); + break; + case OUTT_TREE: + tree_man(curp->outdata, meta); + break; + case OUTT_MAN: + mparse_copy(mp); + break; + case OUTT_PDF: + case OUTT_ASCII: + case OUTT_UTF8: + case OUTT_LOCALE: + case OUTT_PS: + terminal_man(curp->outdata, meta); + break; + default: + break; + } + } + if (mandoc_msg_getmin() < MANDOCERR_STYLE) + check_xr(); } - -static int -pset(const char *buf, size_t pos, struct curparse *curp, - struct man **man, struct mdoc **mdoc) +static void +check_xr(void) { + static struct manpaths paths; + struct mansearch search; + struct mandoc_xr *xr; + size_t sz; - /* - * Try to intuit which kind of manual parser should be used. If - * passed in by command-line (-man, -mdoc), then use that - * explicitly. If passed as -mandoc, then try to guess from the - * line: either skip comments, use -mdoc when finding `.Dt', or - * default to -man, which is more lenient. - */ + if (paths.sz == 0) + manpath_base(&paths); - if (pos >= 3 && 0 == memcmp(buf, ".\\\"", 3)) - return(1); + for (xr = mandoc_xr_get(); xr != NULL; xr = xr->next) { + if (xr->line == -1) + continue; + search.arch = NULL; + search.sec = xr->sec; + search.outkey = NULL; + search.argmode = ARG_NAME; + search.firstmatch = 1; + if (mansearch(&search, &paths, 1, &xr->name, NULL, &sz)) + continue; + if (fs_search(&search, &paths, 1, &xr->name, NULL, &sz) != -1) + continue; + if (xr->count == 1) + mandoc_msg(MANDOCERR_XR_BAD, xr->line, + xr->pos + 1, "Xr %s %s", xr->name, xr->sec); + else + mandoc_msg(MANDOCERR_XR_BAD, xr->line, + xr->pos + 1, "Xr %s %s (%d times)", + xr->name, xr->sec, xr->count); + } +} - switch (curp->inttype) { - case (INTT_MDOC): - if (NULL == curp->mdoc) - curp->mdoc = mdoc_init(curp); - if (NULL == (*mdoc = curp->mdoc)) - return(0); - warnx("inheriting -mdoc parser"); - return(1); - case (INTT_MAN): - if (NULL == curp->man) - curp->man = man_init(curp); - if (NULL == (*man = curp->man)) - return(0); - warnx("inheriting -man parser"); - return(1); +static void +outdata_alloc(struct curparse *curp) +{ + switch (curp->outtype) { + case OUTT_HTML: + curp->outdata = html_alloc(curp->outopts); + break; + case OUTT_UTF8: + curp->outdata = utf8_alloc(curp->outopts); + break; + case OUTT_LOCALE: + curp->outdata = locale_alloc(curp->outopts); + break; + case OUTT_ASCII: + curp->outdata = ascii_alloc(curp->outopts); + break; + case OUTT_PDF: + curp->outdata = pdf_alloc(curp->outopts); + break; + case OUTT_PS: + curp->outdata = ps_alloc(curp->outopts); + break; default: break; } - - if (pos >= 3 && 0 == memcmp(buf, ".Dd", 3)) { - if (NULL == curp->mdoc) - curp->mdoc = mdoc_init(curp); - if (NULL == (*mdoc = curp->mdoc)) - return(0); - return(1); - } - - if (NULL == curp->man) - curp->man = man_init(curp); - if (NULL == (*man = curp->man)) - return(0); - return(1); } - -static int -moptions(enum intt *tflags, char *arg) +static void +passthrough(int fd, int synopsis_only) { + const char synb[] = "S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS"; + const char synr[] = "SYNOPSIS"; - if (0 == strcmp(arg, "doc")) - *tflags = INTT_MDOC; - else if (0 == strcmp(arg, "andoc")) - *tflags = INTT_AUTO; - else if (0 == strcmp(arg, "an")) - *tflags = INTT_MAN; - else { - warnx("bad argument: -m%s", arg); - return(0); - } + FILE *stream; + char *line, *cp; + size_t linesz; + ssize_t len, written; + int lno, print; - return(1); -} + stream = NULL; + line = NULL; + linesz = 0; + if (fflush(stdout) == EOF) { + mandoc_msg(MANDOCERR_FFLUSH, 0, 0, "%s", strerror(errno)); + goto done; + } + if ((stream = fdopen(fd, "r")) == NULL) { + close(fd); + mandoc_msg(MANDOCERR_FDOPEN, 0, 0, "%s", strerror(errno)); + goto done; + } -static int -toptions(enum outt *tflags, char *arg) -{ - - if (0 == strcmp(arg, "ascii")) - *tflags = OUTT_ASCII; - else if (0 == strcmp(arg, "lint")) - *tflags = OUTT_LINT; - else if (0 == strcmp(arg, "tree")) - *tflags = OUTT_TREE; - else { - warnx("bad argument: -T%s", arg); - return(0); + lno = print = 0; + while ((len = getline(&line, &linesz, stream)) != -1) { + lno++; + cp = line; + if (synopsis_only) { + if (print) { + if ( ! isspace((unsigned char)*cp)) + goto done; + while (isspace((unsigned char)*cp)) { + cp++; + len--; + } + } else { + if (strcmp(cp, synb) == 0 || + strcmp(cp, synr) == 0) + print = 1; + continue; + } + } + for (; len > 0; len -= written) { + if ((written = write(STDOUT_FILENO, cp, len)) == -1) { + mandoc_msg(MANDOCERR_WRITE, 0, 0, + "%s", strerror(errno)); + goto done; + } + } } + if (ferror(stream)) + mandoc_msg(MANDOCERR_GETLINE, lno, 0, "%s", strerror(errno)); - return(1); +done: + free(line); + if (stream != NULL) + fclose(stream); } - -/* - * Parse out the options for [-fopt...] setting compiler options. These - * can be comma-delimited or called again. - */ static int -foptions(int *fflags, char *arg) +woptions(char *arg, enum mandoc_os *os_e, int *wstop) { - char *v; - char *toks[5]; + char *v, *o; + const char *toks[11]; - toks[0] = "ign-scope"; - toks[1] = "ign-escape"; - toks[2] = "ign-macro"; - toks[4] = "no-ign-macro"; - toks[5] = NULL; + toks[0] = "stop"; + toks[1] = "all"; + toks[2] = "base"; + toks[3] = "style"; + toks[4] = "warning"; + toks[5] = "error"; + toks[6] = "unsupp"; + toks[7] = "fatal"; + toks[8] = "openbsd"; + toks[9] = "netbsd"; + toks[10] = NULL; - while (*arg) - switch (getsubopt(&arg, toks, &v)) { - case (0): - *fflags |= IGN_SCOPE; + while (*arg) { + o = arg; + switch (getsubopt(&arg, (char * const *)toks, &v)) { + case 0: + *wstop = 1; break; - case (1): - *fflags |= IGN_ESCAPE; + case 1: + case 2: + mandoc_msg_setmin(MANDOCERR_BASE); break; - case (2): - *fflags |= IGN_MACRO; + case 3: + mandoc_msg_setmin(MANDOCERR_STYLE); break; - case (3): - *fflags |= NO_IGN_MACRO; + case 4: + mandoc_msg_setmin(MANDOCERR_WARNING); break; + case 5: + mandoc_msg_setmin(MANDOCERR_ERROR); + break; + case 6: + mandoc_msg_setmin(MANDOCERR_UNSUPP); + break; + case 7: + mandoc_msg_setmin(MANDOCERR_BADARG); + break; + case 8: + mandoc_msg_setmin(MANDOCERR_BASE); + *os_e = MANDOC_OS_OPENBSD; + break; + case 9: + mandoc_msg_setmin(MANDOCERR_BASE); + *os_e = MANDOC_OS_NETBSD; + break; default: - warnx("bad argument: -f%s", arg); - return(0); + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-W %s", o); + return -1; } - - return(1); + } + return 0; } - -/* - * Parse out the options for [-Werr...], which sets warning modes. - * These can be comma-delimited or called again. +/* + * Wait until moved to the foreground, + * then fork the pager and wait for the user to close it. */ -static int -woptions(int *wflags, char *arg) +static void +run_pager(struct tag_files *tag_files) { - char *v; - char *toks[5]; + int signum, status; + pid_t man_pgid, tc_pgid; + pid_t pager_pid, wait_pid; - toks[0] = "all"; - toks[1] = "compat"; - toks[2] = "syntax"; - toks[3] = "error"; - toks[4] = NULL; + man_pgid = getpgid(0); + tag_files->tcpgid = man_pgid == getpid() ? getpgid(getppid()) : + man_pgid; + pager_pid = 0; + signum = SIGSTOP; - while (*arg) - switch (getsubopt(&arg, toks, &v)) { - case (0): - *wflags |= WARN_WALL; - break; - case (1): - *wflags |= WARN_WCOMPAT; - break; - case (2): - *wflags |= WARN_WSYNTAX; - break; - case (3): - *wflags |= WARN_WERR; - break; - default: - warnx("bad argument: -W%s", arg); - return(0); + for (;;) { + /* Stop here until moved to the foreground. */ + + tc_pgid = tcgetpgrp(tag_files->ofd); + if (tc_pgid != man_pgid) { + if (tc_pgid == pager_pid) { + (void)tcsetpgrp(tag_files->ofd, man_pgid); + if (signum == SIGTTIN) + continue; + } else + tag_files->tcpgid = tc_pgid; + kill(0, signum); + continue; } - return(1); -} + /* Once in the foreground, activate the pager. */ + if (pager_pid) { + (void)tcsetpgrp(tag_files->ofd, pager_pid); + kill(pager_pid, SIGCONT); + } else + pager_pid = spawn_pager(tag_files); -/* ARGSUSED */ -static int -merr(void *arg, int line, int col, const char *msg) -{ - struct curparse *curp; + /* Wait for the pager to stop or exit. */ - curp = (struct curparse *)arg; + while ((wait_pid = waitpid(pager_pid, &status, + WUNTRACED)) == -1 && errno == EINTR) + continue; - warnx("%s:%d: error: %s (column %d)", - curp->file, line, msg, col); - return(0); + if (wait_pid == -1) { + mandoc_msg(MANDOCERR_WAIT, 0, 0, + "%s", strerror(errno)); + break; + } + if (!WIFSTOPPED(status)) + break; + + signum = WSTOPSIG(status); + } } - -static int -mdocwarn(void *arg, int line, int col, - enum mdoc_warn type, const char *msg) +static pid_t +spawn_pager(struct tag_files *tag_files) { - struct curparse *curp; - char *wtype; + const struct timespec timeout = { 0, 100000000 }; /* 0.1s */ +#define MAX_PAGER_ARGS 16 + char *argv[MAX_PAGER_ARGS]; + const char *pager; + char *cp; +#if HAVE_LESS_T + size_t cmdlen; +#endif + int argc, use_ofn; + pid_t pager_pid; - curp = (struct curparse *)arg; - wtype = NULL; + pager = getenv("MANPAGER"); + if (pager == NULL || *pager == '\0') + pager = getenv("PAGER"); + if (pager == NULL || *pager == '\0') + pager = "more -s"; + cp = mandoc_strdup(pager); - switch (type) { - case (WARN_COMPAT): - wtype = "compat"; - if (curp->wflags & WARN_WCOMPAT) + /* + * Parse the pager command into words. + * Intentionally do not do anything fancy here. + */ + + argc = 0; + while (argc + 5 < MAX_PAGER_ARGS) { + argv[argc++] = cp; + cp = strchr(cp, ' '); + if (cp == NULL) break; - return(1); - case (WARN_SYNTAX): - wtype = "syntax"; - if (curp->wflags & WARN_WSYNTAX) + *cp++ = '\0'; + while (*cp == ' ') + cp++; + if (*cp == '\0') break; - return(1); } - assert(wtype); - warnx("%s:%d: %s warning: %s (column %d)", - curp->file, line, wtype, msg, col); + /* For less(1), use the tag file. */ - if ( ! (curp->wflags & WARN_WERR)) - return(1); + use_ofn = 1; +#if HAVE_LESS_T + if (*tag_files->tfn != '\0' && (cmdlen = strlen(argv[0])) >= 4) { + cp = argv[0] + cmdlen - 4; + if (strcmp(cp, "less") == 0) { + argv[argc++] = mandoc_strdup("-T"); + argv[argc++] = tag_files->tfn; + if (tag_files->tagname != NULL) { + argv[argc++] = mandoc_strdup("-t"); + argv[argc++] = tag_files->tagname; + use_ofn = 0; + } + } + } +#endif + if (use_ofn) + argv[argc++] = tag_files->ofn; + argv[argc] = NULL; - warnx("%s: considering warnings as errors", - __progname); - return(0); -} + switch (pager_pid = fork()) { + case -1: + mandoc_msg(MANDOCERR_FORK, 0, 0, "%s", strerror(errno)); + exit(mandoc_msg_getrc()); + case 0: + break; + default: + (void)setpgid(pager_pid, 0); + (void)tcsetpgrp(tag_files->ofd, pager_pid); +#if HAVE_PLEDGE + if (pledge("stdio rpath tmppath tty proc", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, + "%s", strerror(errno)); + exit(mandoc_msg_getrc()); + } +#endif + tag_files->pager_pid = pager_pid; + return pager_pid; + } + /* The child process becomes the pager. */ -static int -manwarn(void *arg, int line, int col, const char *msg) -{ - struct curparse *curp; + if (dup2(tag_files->ofd, STDOUT_FILENO) == -1) { + mandoc_msg(MANDOCERR_DUP, 0, 0, "%s", strerror(errno)); + _exit(mandoc_msg_getrc()); + } + close(tag_files->ofd); + assert(tag_files->tfd == -1); - curp = (struct curparse *)arg; + /* Do not start the pager before controlling the terminal. */ - if ( ! (curp->wflags & WARN_WSYNTAX)) - return(1); + while (tcgetpgrp(STDOUT_FILENO) != getpid()) + nanosleep(&timeout, NULL); - warnx("%s:%d: syntax warning: %s (column %d)", - curp->file, line, msg, col); - - if ( ! (curp->wflags & WARN_WERR)) - return(1); - - warnx("%s: considering warnings as errors", - __progname); - return(0); + execvp(argv[0], argv); + mandoc_msg(MANDOCERR_EXEC, 0, 0, "%s: %s", argv[0], strerror(errno)); + _exit(mandoc_msg_getrc()); }