=================================================================== RCS file: /cvs/mandoc/main.c,v retrieving revision 1.35 retrieving revision 1.351 diff -u -p -r1.35 -r1.351 --- mandoc/main.c 2009/07/06 09:21:24 1.35 +++ mandoc/main.c 2020/07/20 16:57:30 1.351 @@ -1,682 +1,1301 @@ -/* $Id: main.c,v 1.35 2009/07/06 09:21:24 kristaps Exp $ */ +/* $Id: main.c,v 1.351 2020/07/20 16:57:30 schwarze Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2010-2012, 2014-2020 Ingo Schwarze + * Copyright (c) 2008-2012 Kristaps Dzonsons + * 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. * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * 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 AUTHOR BE LIABLE FOR + * 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. + * + * Main program for mandoc(1), man(1), apropos(1), whatis(1), and help(1). */ +#include "config.h" + +#include +#include +#include /* MACHINE */ #include +#include #include +#include +#if HAVE_ERR #include +#endif +#include #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 "term_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 - -typedef int (*out_mdoc)(void *, const struct mdoc *); -typedef int (*out_man)(void *, const struct man *); -typedef void (*out_free)(void *); - -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; /* Current parse. */ - int fd; /* Current parse. */ - 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; -#define IGN_SCOPE (1 << 0) /* Ignore scope errors. */ -#define NO_IGN_ESCAPE (1 << 1) /* Don't ignore bad escapes. */ -#define NO_IGN_MACRO (1 << 2) /* Don't ignore bad macros. */ -#define NO_IGN_CHARS (1 << 3) /* Don't ignore bad chars. */ - enum intt inttype; /* Input parsers... */ - struct man *man; - struct man *lastman; - struct mdoc *mdoc; - struct mdoc *lastmdoc; - enum outt outtype; /* Output devices... */ - out_mdoc outmdoc; - out_man outman; - out_free outfree; - void *outdata; +struct outstate { + struct tag_files *tag_files; /* Tagging state variables. */ + void *outdata; /* data for output */ + int use_pager; + int wstop; /* stop after a file with a warning */ + int had_output; /* Some output was generated. */ + enum outt outtype; /* which output to use */ }; -extern void *ascii_alloc(void); -extern int tree_mdoc(void *, const struct mdoc *); -extern int tree_man(void *, const struct man *); -extern int terminal_mdoc(void *, const struct mdoc *); -extern int terminal_man(void *, const struct man *); -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, const char *); -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 *, int, 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); +int mandocdb(int, char *[]); -extern char *__progname; +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 *, const char *, + struct manpage **, size_t *); +static void glob_esc(char **, const char *, const char *); +static void outdata_alloc(struct outstate *, struct manoutput *); +static void parse(struct mparse *, int, const char *, + struct outstate *, struct manoutput *); +static void passthrough(int, int); +static void process_onefile(struct mparse *, struct manpage *, + int, struct outstate *, struct manconf *); +static void run_pager(struct outstate *, char *); +static pid_t spawn_pager(struct outstate *, char *); +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; - struct buf ln, blk; - struct curparse curp; + struct manconf conf; /* Manpaths and output options. */ + struct outstate outst; /* Output state. */ + struct winsize ws; /* Result of ioctl(TIOCGWINSZ). */ + struct mansearch search; /* Search options. */ + struct manpage *res; /* Complete list of search results. */ + struct manpage *resn; /* Search results for one name. */ + struct mparse *mp; /* Opaque parser object. */ + const char *conf_file; /* -C: alternate config file. */ + const char *os_s; /* -I: Operating system for display. */ + const char *progname, *sec; + 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 ressz; /* Number of elements in res[]. */ + size_t resnsz; /* Number of elements in resn[]. */ + size_t i, ib, ssz; + int options; /* Parser options. */ + int show_usage; /* Invalid argument: give up. */ + int prio, best_prio; + int startdir; + int c; + enum mandoc_os os_e; /* Check base system conventions. */ + enum outmode outmode; /* According to command line. */ - bzero(&curp, sizeof(struct curparse)); +#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 - curp.inttype = INTT_AUTO; - curp.outtype = OUTT_ASCII; + mandoc_msg_setoutfile(stderr); + if (strncmp(progname, "mandocdb", 8) == 0 || + strcmp(progname, BINM_MAKEWHATIS) == 0) + return mandocdb(argc, argv); - /* LINTED */ - while (-1 != (c = getopt(argc, argv, "f:m:VW:T:"))) +#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 + + /* 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 options. */ + + options = MPARSE_SO | MPARSE_UTF8 | MPARSE_LATIN1; + os_e = MANDOC_OS_OTHER; + os_s = NULL; + + /* Formatter options. */ + + memset(&outst, 0, sizeof(outst)); + outst.tag_files = NULL; + outst.outtype = OUTT_LOCALE; + outst.use_pager = 1; + + 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(EXIT_FAILURE); + case 'a': + outmode = OUTMODE_ALL; break; - case ('m'): - if ( ! moptions(&curp.inttype, optarg)) - return(EXIT_FAILURE); + case 'C': + conf_file = optarg; break; - case ('T'): - if ( ! toptions(&curp.outtype, optarg)) - return(EXIT_FAILURE); + case 'c': + outst.use_pager = 0; break; - case ('W'): - if ( ! woptions(&curp.wflags, optarg)) - return(EXIT_FAILURE); + case 'f': + search.argmode = ARG_WORD; break; - case ('V'): - version(); - /* NOTREACHED */ + case 'h': + conf.output.synopsisonly = 1; + outst.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) + outst.outtype = OUTT_ASCII; + else if (strcmp(optarg, "lint") == 0) { + outst.outtype = OUTT_LINT; + mandoc_msg_setoutfile(stdout); + mandoc_msg_setmin(MANDOCERR_BASE); + } else if (strcmp(optarg, "tree") == 0) + outst.outtype = OUTT_TREE; + else if (strcmp(optarg, "man") == 0) + outst.outtype = OUTT_MAN; + else if (strcmp(optarg, "html") == 0) + outst.outtype = OUTT_HTML; + else if (strcmp(optarg, "markdown") == 0) + outst.outtype = OUTT_MARKDOWN; + else if (strcmp(optarg, "utf8") == 0) + outst.outtype = OUTT_UTF8; + else if (strcmp(optarg, "locale") == 0) + outst.outtype = OUTT_LOCALE; + else if (strcmp(optarg, "ps") == 0) + outst.outtype = OUTT_PS; + else if (strcmp(optarg, "pdf") == 0) + outst.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, &outst.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); - bzero(&ln, sizeof(struct buf)); - bzero(&blk, sizeof(struct buf)); + /* Postprocess options. */ - rc = 1; - - if (NULL == *argv) { - curp.file = ""; - curp.fd = STDIN_FILENO; - if ( ! fdesc(&blk, &ln, &curp)) - rc = 0; + switch (outmode) { + case OUTMODE_DEF: + switch (search.argmode) { + case ARG_FILE: + outmode = OUTMODE_ALL; + outst.use_pager = 0; + break; + case ARG_NAME: + outmode = OUTMODE_ONE; + break; + default: + outmode = OUTMODE_LST; + break; + } + break; + case OUTMODE_FLN: + if (search.argmode == ARG_FILE) + outmode = OUTMODE_ALL; + break; + case OUTMODE_ALL: + break; + case OUTMODE_LST: + case OUTMODE_ONE: + abort(); } - while (rc && *argv) { - if ( ! ffile(&blk, &ln, *argv, &curp)) - rc = 0; - argv++; - if (*argv && rc) { - if (curp.lastman) - if ( ! man_reset(curp.lastman)) - rc = 0; - if (curp.lastmdoc) - if ( ! mdoc_reset(curp.lastmdoc)) - rc = 0; - curp.lastman = NULL; - curp.lastmdoc = NULL; + 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(); + } } } - if (blk.buf) - free(blk.buf); - if (ln.buf) - free(ln.buf); - if (curp.outfree) - (*curp.outfree)(curp.outdata); - if (curp.mdoc) - mdoc_free(curp.mdoc); - if (curp.man) - man_free(curp.man); + if (outst.outtype != OUTT_TREE || conf.output.noval == 0) + options |= MPARSE_VALIDATE; - return(rc ? EXIT_SUCCESS : EXIT_FAILURE); -} + if (outmode == OUTMODE_FLN || + outmode == OUTMODE_LST || + !isatty(STDOUT_FILENO)) + outst.use_pager = 0; + if (outst.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; + } -__dead static void -version(void) -{ +#if HAVE_PLEDGE + if (outst.use_pager == 0) { + if (pledge("stdio rpath", NULL) == -1) { + mandoc_msg(MANDOCERR_PLEDGE, 0, 0, + "%s", strerror(errno)); + return mandoc_msg_getrc(); + } + } +#endif - (void)printf("%s %s\n", __progname, VERSION); - exit(EXIT_SUCCESS); -} + /* Parse arguments. */ + if (argc > 0) { + argc -= optind; + argv += optind; + } -__dead static void -usage(void) -{ + /* + * Quirks for help(1) and man(1), + * in particular for a section argument without -s. + */ - (void)fprintf(stderr, "usage: %s [-V] [-foption...] " - "[-mformat] [-Toutput] [-Werr...]\n", - __progname); - exit(EXIT_FAILURE); -} + 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--; + } + if (search.arch == NULL) + search.arch = getenv("MACHINE"); +#ifdef MACHINE + if (search.arch == NULL) + search.arch = MACHINE; +#endif + if (outmode == OUTMODE_ONE) + search.firstmatch = 1; + } + /* + * Use the first argument for -O tag in addition to + * using it as a search term for man(1) or apropos(1). + */ -static struct man * -man_init(struct curparse *curp) -{ - int pflags; - struct man *man; - struct man_cb mancb; + 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; + } - mancb.man_err = merr; - mancb.man_warn = manwarn; + /* Read the configuration file. */ - /* Defaults from mandoc.1. */ + if (search.argmode != ARG_FILE) + manconf_parse(&conf, conf_file, defpaths, auxpaths); - pflags = MAN_IGN_MACRO | MAN_IGN_ESCAPE | MAN_IGN_CHARS; + /* man(1): Resolve each name individually. */ - if (curp->fflags & NO_IGN_MACRO) - pflags &= ~MAN_IGN_MACRO; - if (curp->fflags & NO_IGN_CHARS) - pflags &= ~MAN_IGN_CHARS; - if (curp->fflags & NO_IGN_ESCAPE) - pflags &= ~MAN_IGN_ESCAPE; + if (search.argmode == ARG_NAME) { + if (argc < 1) { + if (outmode != OUTMODE_FLN) + usage(ARG_NAME); + if (conf.manpath.sz == 0) { + warnx("The manpath is empty."); + mandoc_msg_setrc(MANDOCLEVEL_BADARG); + } else { + for (i = 0; i + 1 < conf.manpath.sz; i++) + printf("%s:", conf.manpath.paths[i]); + printf("%s\n", conf.manpath.paths[i]); + } + manconf_free(&conf); + return (int)mandoc_msg_getrc(); + } + for (res = NULL, ressz = 0; argc > 0; argc--, argv++) { + (void)mansearch(&search, &conf.manpath, + 1, argv, &resn, &resnsz); + if (resnsz == 0) + (void)fs_search(&search, &conf.manpath, + *argv, &resn, &resnsz); + if (resnsz == 0 && strchr(*argv, '/') == NULL) { + if (search.arch != NULL && + arch_valid(search.arch, OSENUM) == 0) + warnx("Unknown architecture \"%s\".", + search.arch); + else if (search.sec != NULL) + warnx("No entry for %s in " + "section %s of the manual.", + *argv, search.sec); + else + warnx("No entry for %s in " + "the manual.", *argv); + mandoc_msg_setrc(MANDOCLEVEL_BADARG); + continue; + } + if (resnsz == 0) { + if (access(*argv, R_OK) == -1) { + mandoc_msg_setinfilename(*argv); + mandoc_msg(MANDOCERR_BADARG_BAD, + 0, 0, "%s", strerror(errno)); + mandoc_msg_setinfilename(NULL); + continue; + } + resnsz = 1; + resn = mandoc_calloc(resnsz, sizeof(*res)); + resn->file = mandoc_strdup(*argv); + resn->ipath = SIZE_MAX; + resn->form = FORM_SRC; + } + if (outmode != OUTMODE_ONE || resnsz == 1) { + res = mandoc_reallocarray(res, + ressz + resnsz, sizeof(*res)); + memcpy(res + ressz, resn, + sizeof(*resn) * resnsz); + ressz += resnsz; + continue; + } - if (NULL == (man = man_alloc(curp, pflags, &mancb))) - warnx("memory exhausted"); + /* Search for the best section. */ - return(man); -} + best_prio = 40; + for (ib = i = 0; i < resnsz; i++) { + sec = resn[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; + ib = i; + } + res = mandoc_reallocarray(res, ressz + 1, + sizeof(*res)); + memcpy(res + ressz++, resn + ib, sizeof(*resn)); + } + /* apropos(1), whatis(1): Process the full search expression. */ -static struct mdoc * -mdoc_init(struct curparse *curp) -{ - int pflags; - struct mdoc *mdoc; - struct mdoc_cb mdoccb; + } else if (search.argmode != ARG_FILE) { + if (mansearch(&search, &conf.manpath, + argc, argv, &res, &ressz) == 0) + usage(search.argmode); - mdoccb.mdoc_err = merr; - mdoccb.mdoc_warn = mdocwarn; + if (ressz == 0) { + warnx("nothing appropriate"); + mandoc_msg_setrc(MANDOCLEVEL_BADARG); + goto out; + } - /* Defaults from mandoc.1. */ + /* mandoc(1): Take command line arguments as file names. */ - pflags = MDOC_IGN_MACRO | MDOC_IGN_ESCAPE | MDOC_IGN_CHARS; + } else { + ressz = argc > 0 ? argc : 1; + res = mandoc_calloc(ressz, sizeof(*res)); + for (i = 0; i < ressz; i++) { + if (argc > 0) + res[i].file = mandoc_strdup(argv[i]); + res[i].ipath = SIZE_MAX; + res[i].form = FORM_SRC; + } + } - if (curp->fflags & IGN_SCOPE) - pflags |= MDOC_IGN_SCOPE; - if (curp->fflags & NO_IGN_ESCAPE) - pflags &= ~MDOC_IGN_ESCAPE; - if (curp->fflags & NO_IGN_MACRO) - pflags &= ~MDOC_IGN_MACRO; - if (curp->fflags & NO_IGN_CHARS) - pflags &= ~MDOC_IGN_CHARS; + switch (outmode) { + case OUTMODE_FLN: + for (i = 0; i < ressz; i++) + puts(res[i].file); + goto out; + case OUTMODE_LST: + for (i = 0; i < ressz; i++) + printf("%s - %s\n", res[i].names, + res[i].output == NULL ? "" : + res[i].output); + goto out; + default: + break; + } - if (NULL == (mdoc = mdoc_alloc(curp, pflags, &mdoccb))) - warnx("memory exhausted"); + if (search.argmode == ARG_FILE && auxpaths != NULL) { + if (strcmp(auxpaths, "doc") == 0) + options |= MPARSE_MDOC; + else if (strcmp(auxpaths, "an") == 0) + options |= MPARSE_MAN; + } - return(mdoc); -} + mchars_alloc(); + mp = mparse_alloc(options, os_e, os_s); - -static int -ffile(struct buf *blk, struct buf *ln, - const char *file, struct curparse *curp) -{ - int c; - - curp->file = file; - if (-1 == (curp->fd = open(curp->file, O_RDONLY, 0))) { - warn("%s", curp->file); - return(0); + /* + * 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); + for (i = 0; i < ressz; i++) { + process_onefile(mp, res + i, startdir, &outst, &conf); + if (outst.wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK) + break; } + if (startdir != -1) { + (void)fchdir(startdir); + close(startdir); + } + if (conf.output.tag != NULL && conf.output.tag_found == 0) { + mandoc_msg(MANDOCERR_TAG, 0, 0, "%s", conf.output.tag); + conf.output.tag = NULL; + } + if (outst.outdata != NULL) { + switch (outst.outtype) { + case OUTT_HTML: + html_free(outst.outdata); + break; + case OUTT_UTF8: + case OUTT_LOCALE: + case OUTT_ASCII: + ascii_free(outst.outdata); + break; + case OUTT_PDF: + case OUTT_PS: + pspdf_free(outst.outdata); + break; + default: + break; + } + } + mandoc_xr_free(); + mparse_free(mp); + mchars_free(); - c = fdesc(blk, ln, curp); +out: + mansearch_free(res, ressz); + if (search.argmode != ARG_FILE) + manconf_free(&conf); - if (-1 == close(curp->fd)) - warn("%s", curp->file); + if (outst.tag_files != NULL) { + if (term_tag_close() != -1) + run_pager(&outst, conf.output.tag); + term_tag_unlink(); + } else if (outst.had_output && outst.outtype != OUTT_LINT) + mandoc_msg_summary(); - return(c); + 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 void +glob_esc(char **dst, const char *src, const char *suffix) +{ + while (*src != '\0') { + if (strchr("*?[", *src) != NULL) + *(*dst)++ = '\\'; + *(*dst)++ = *src++; + } + while (*suffix != '\0') + *(*dst)++ = *suffix++; +} + 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, comment; - struct man *man; - struct mdoc *mdoc; + struct stat sb; + glob_t globinfo; + struct manpage *page; + char *file, *cp; + int globres; + enum form form; - sz = BUFSIZ; - man = NULL; - mdoc = NULL; + const char *const slman = "/man"; + const char *const slash = "/"; + const char *const sglob = ".[01-9]*"; - /* - * 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. - */ + 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); - if (-1 == fstat(curp->fd, &st)) - warn("%s", curp->file); - else if ((size_t)st.st_blksize > sz) - sz = st.st_blksize; + 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 (sz > blk->sz) { - blk->buf = realloc(blk->buf, sz); - if (NULL == blk->buf) { - warn("realloc"); - return(0); - } - blk->sz = sz; + 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); } - /* Fill buf with file blocksize. */ + cp = file = mandoc_malloc(strlen(paths->paths[ipath]) * 2 + + strlen(slman) + strlen(sec) * 2 + strlen(slash) + + strlen(name) * 2 + strlen(sglob) + 1); + glob_esc(&cp, paths->paths[ipath], slman); + glob_esc(&cp, sec, slash); + glob_esc(&cp, name, sglob); + *cp = '\0'; + 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; - for (lnn = pos = comment = 0; ; ) { - if (-1 == (ssz = read(curp->fd, blk->buf, sz))) { - warn("%s", curp->file); - return(0); - } else if (0 == ssz) - break; + mandoc_asprintf(&file, "%s.%s", name, sec); + globres = stat(file, &sb); + free(file); + return globres; - /* Parse the read block into partial or full lines. */ +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; +} - 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); - } - } +static int +fs_search(const struct mansearch *cfg, const struct manpaths *paths, + const char *name, 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]); - if ('\n' != blk->buf[i]) { - if (comment) - continue; - ln->buf[pos++] = blk->buf[i]; + size_t ipath, isec; - /* Handle in-line `\"' comments. */ + assert(cfg->argmode == ARG_NAME); + if (res != NULL) + *res = NULL; + *ressz = 0; + for (ipath = 0; ipath < paths->sz; ipath++) { + if (cfg->sec != NULL) { + if (fs_lookup(paths, ipath, cfg->sec, cfg->arch, + name, res, ressz) != -1 && cfg->firstmatch) + return 0; + } else { + for (isec = 0; isec < nsec; isec++) + if (fs_lookup(paths, ipath, sections[isec], + cfg->arch, name, res, ressz) != -1 && + cfg->firstmatch) + return 0; + } + } + return -1; +} - if (1 == pos || '\"' != ln->buf[pos - 1]) - continue; +static void +process_onefile(struct mparse *mp, struct manpage *resp, int startdir, + struct outstate *outst, struct manconf *conf) +{ + int fd; - for (j = pos - 2; j >= 0; j--) - if ('\\' != ln->buf[j]) - break; + /* + * 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->ipath != SIZE_MAX) + (void)chdir(conf->manpath.paths[resp->ipath]); + else if (startdir != -1) + (void)fchdir(startdir); - if ( ! ((pos - 2 - j) % 2)) - continue; + mandoc_msg_setinfilename(resp->file); + if (resp->file != NULL) { + if ((fd = mparse_open(mp, resp->file)) == -1) { + mandoc_msg(resp->ipath == SIZE_MAX ? + MANDOCERR_BADARG_BAD : MANDOCERR_OPEN, + 0, 0, "%s", strerror(errno)); + mandoc_msg_setinfilename(NULL); + return; + } + } else + fd = STDIN_FILENO; - comment = 1; - pos -= 2; - continue; - } + if (outst->use_pager) { + outst->use_pager = 0; + outst->tag_files = term_tag_init(); + } + if (outst->had_output && outst->outtype <= OUTT_UTF8) { + if (outst->outdata == NULL) + outdata_alloc(outst, &conf->output); + terminal_sepline(outst->outdata); + } - /* Handle escaped `\\n' newlines. */ + if (resp->form == FORM_SRC) + parse(mp, fd, resp->file, outst, &conf->output); + else { + passthrough(fd, conf->output.synopsisonly); + outst->had_output = 1; + } - if (pos > 0 && 0 == comment && - '\\' == ln->buf[pos - 1]) { - for (j = pos - 1; j >= 0; j--) - if ('\\' != ln->buf[j]) - break; - if ( ! ((pos - j) % 2)) { - pos--; - lnn++; - continue; - } - } + if (ferror(stdout)) { + if (outst->tag_files != NULL) { + mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s: %s", + outst->tag_files->ofn, strerror(errno)); + term_tag_unlink(); + outst->tag_files = NULL; + } else + mandoc_msg(MANDOCERR_WRITE, 0, 0, "%s", + strerror(errno)); + } + mandoc_msg_setinfilename(NULL); +} - ln->buf[pos] = 0; - lnn++; +static void +parse(struct mparse *mp, int fd, const char *file, + struct outstate *outst, struct manoutput *outconf) +{ + static int previous; + struct roff_meta *meta; - /* If unset, assign parser in pset(). */ + assert(fd >= 0); + if (file == NULL) + file = ""; - if ( ! (man || mdoc) && ! pset(ln->buf, - pos, curp, &man, &mdoc)) - return(0); + if (previous) + mparse_reset(mp); + else + previous = 1; - pos = comment = 0; + mparse_readfd(mp, fd, file); + if (fd != STDIN_FILENO) + close(fd); - /* Pass down into parsers. */ + /* + * 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 (outst->wstop && mandoc_msg_getrc() != MANDOCLEVEL_OK) + return; - /* NOTE a parser may not have been assigned, yet. */ + if (outst->outdata == NULL) + outdata_alloc(outst, outconf); + else if (outst->outtype == OUTT_HTML) + html_reset(outst->outdata); - if ( ! (man || mdoc)) { - warnx("%s: not a manual", curp->file); - return(0); - } + mandoc_xr_reset(); + meta = mparse_result(mp); - if (mdoc && ! mdoc_endparse(mdoc)) - return(0); - if (man && ! man_endparse(man)) - return(0); + /* Execute the out device, if it exists. */ - /* If unset, allocate output dev now (if applicable). */ - - if ( ! (curp->outman && curp->outmdoc)) { - switch (curp->outtype) { - case (OUTT_TREE): - curp->outman = tree_man; - curp->outmdoc = tree_mdoc; + outst->had_output = 1; + if (meta->macroset == MACROSET_MDOC) { + switch (outst->outtype) { + case OUTT_HTML: + html_mdoc(outst->outdata, meta); break; - case (OUTT_LINT): + case OUTT_TREE: + tree_mdoc(outst->outdata, meta); break; + case OUTT_MAN: + man_mdoc(outst->outdata, meta); + break; + case OUTT_PDF: + case OUTT_ASCII: + case OUTT_UTF8: + case OUTT_LOCALE: + case OUTT_PS: + terminal_mdoc(outst->outdata, meta); + break; + case OUTT_MARKDOWN: + markdown_mdoc(outst->outdata, meta); + break; default: - curp->outdata = ascii_alloc(); - curp->outman = terminal_man; - curp->outmdoc = terminal_mdoc; - curp->outfree = terminal_free; break; } } - - /* Execute the out device, if it exists. */ - - if (man && curp->outman) - if ( ! (*curp->outman)(curp->outdata, man)) - return(0); - if (mdoc && curp->outmdoc) - if ( ! (*curp->outmdoc)(curp->outdata, mdoc)) - return(0); - - return(1); + if (meta->macroset == MACROSET_MAN) { + switch (outst->outtype) { + case OUTT_HTML: + html_man(outst->outdata, meta); + break; + case OUTT_TREE: + tree_man(outst->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(outst->outdata, meta); + break; + default: + break; + } + } + if (outconf->tag != NULL && outconf->tag_found == 0 && + tag_exists(outconf->tag)) + outconf->tag_found = 1; + if (mandoc_msg_getmin() < MANDOCERR_STYLE) + check_xr(); } - -static int -pset(const char *buf, int pos, struct curparse *curp, - struct man **man, struct mdoc **mdoc) +static void +check_xr(void) { - int i; + 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 dot-lines, use -mdoc when finding `.Dt', or - * default to -man, which is more lenient. - */ + if (paths.sz == 0) + manpath_base(&paths); - if (buf[0] == '.') { - for (i = 1; buf[i]; i++) - if (' ' != buf[i] && '\t' != buf[i]) - break; - if (0 == buf[i]) - 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, 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); - curp->lastmdoc = *mdoc; - return(1); - case (INTT_MAN): - if (NULL == curp->man) - curp->man = man_init(curp); - if (NULL == (*man = curp->man)) - return(0); - curp->lastman = *man; - return(1); +static void +outdata_alloc(struct outstate *outst, struct manoutput *outconf) +{ + switch (outst->outtype) { + case OUTT_HTML: + outst->outdata = html_alloc(outconf); + break; + case OUTT_UTF8: + outst->outdata = utf8_alloc(outconf); + break; + case OUTT_LOCALE: + outst->outdata = locale_alloc(outconf); + break; + case OUTT_ASCII: + outst->outdata = ascii_alloc(outconf); + break; + case OUTT_PDF: + outst->outdata = pdf_alloc(outconf); + break; + case OUTT_PS: + outst->outdata = ps_alloc(outconf); + 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); - curp->lastmdoc = *mdoc; - return(1); - } - - if (NULL == curp->man) - curp->man = man_init(curp); - if (NULL == (*man = curp->man)) - return(0); - curp->lastman = *man; - 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); } - static int -foptions(int *fflags, char *arg) +woptions(char *arg, enum mandoc_os *os_e, int *wstop) { char *v, *o; - char *toks[6]; + const char *toks[11]; - toks[0] = "ign-scope"; - toks[1] = "no-ign-escape"; - toks[2] = "no-ign-macro"; - toks[3] = "no-ign-chars"; - toks[4] = "strict"; - 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) { o = arg; - switch (getsubopt(&arg, toks, &v)) { - case (0): - *fflags |= IGN_SCOPE; + switch (getsubopt(&arg, (char * const *)toks, &v)) { + case 0: + *wstop = 1; break; - case (1): - *fflags |= NO_IGN_ESCAPE; + case 1: + case 2: + mandoc_msg_setmin(MANDOCERR_BASE); break; - case (2): - *fflags |= NO_IGN_MACRO; + case 3: + mandoc_msg_setmin(MANDOCERR_STYLE); break; - case (3): - *fflags |= NO_IGN_CHARS; + case 4: + mandoc_msg_setmin(MANDOCERR_WARNING); break; - case (4): - *fflags |= NO_IGN_ESCAPE | - NO_IGN_MACRO | NO_IGN_CHARS; + 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", o); - return(0); + mandoc_msg(MANDOCERR_BADARG_BAD, 0, 0, "-W %s", o); + return -1; } } - - return(1); + return 0; } - -static int -woptions(int *wflags, char *arg) +/* + * Wait until moved to the foreground, + * then fork the pager and wait for the user to close it. + */ +static void +run_pager(struct outstate *outst, char *tag_target) { - char *v, *o; - 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); + outst->tag_files->tcpgid = + man_pgid == getpid() ? getpgid(getppid()) : man_pgid; + pager_pid = 0; + signum = SIGSTOP; - while (*arg) { - o = 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", o); - return(0); + for (;;) { + /* Stop here until moved to the foreground. */ + + tc_pgid = tcgetpgrp(STDOUT_FILENO); + if (tc_pgid != man_pgid) { + if (tc_pgid == pager_pid) { + (void)tcsetpgrp(STDOUT_FILENO, man_pgid); + if (signum == SIGTTIN) + continue; + } else + outst->tag_files->tcpgid = tc_pgid; + kill(0, signum); + continue; } - } - return(1); -} + /* Once in the foreground, activate the pager. */ + if (pager_pid) { + (void)tcsetpgrp(STDOUT_FILENO, pager_pid); + kill(pager_pid, SIGCONT); + } else + pager_pid = spawn_pager(outst, tag_target); -/* 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; - warnx("%s:%d: error: %s (column %d)", - curp->file, line, msg, col); + while ((wait_pid = waitpid(pager_pid, &status, + WUNTRACED)) == -1 && errno == EINTR) + continue; - 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, const char *msg) +static pid_t +spawn_pager(struct outstate *outst, char *tag_target) { - struct curparse *curp; + 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; + assert(outst->tag_files->ofd == -1); + assert(outst->tag_files->tfs == NULL); - warnx("%s:%d: warning: %s (column %d)", - curp->file, line, msg, col); + pager = getenv("MANPAGER"); + if (pager == NULL || *pager == '\0') + pager = getenv("PAGER"); + if (pager == NULL || *pager == '\0') + pager = BINM_PAGER; + cp = mandoc_strdup(pager); - if ( ! (curp->wflags & WARN_WERR)) - return(1); - - warnx("considering warnings as errors"); - return(0); -} + /* + * 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; + *cp++ = '\0'; + while (*cp == ' ') + cp++; + if (*cp == '\0') + break; + } -static int -manwarn(void *arg, int line, int col, const char *msg) -{ - struct curparse *curp; + /* For less(1), use the tag file. */ - curp = (struct curparse *)arg; + use_ofn = 1; +#if HAVE_LESS_T + if (*outst->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++] = outst->tag_files->tfn; + if (tag_target != NULL) { + argv[argc++] = mandoc_strdup("-t"); + argv[argc++] = tag_target; + use_ofn = 0; + } + } + } +#endif + if (use_ofn) { + if (outst->outtype == OUTT_HTML && tag_target != NULL) + mandoc_asprintf(&argv[argc], "file://%s#%s", + outst->tag_files->ofn, tag_target); + else + argv[argc] = outst->tag_files->ofn; + argc++; + } + argv[argc] = NULL; - if ( ! (curp->wflags & WARN_WSYNTAX)) - return(1); + 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(STDOUT_FILENO, 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 + outst->tag_files->pager_pid = pager_pid; + return pager_pid; + } - warnx("%s:%d: syntax warning: %s (column %d)", - curp->file, line, msg, col); + /* + * The child process becomes the pager. + * Do not start it before controlling the terminal. + */ - if ( ! (curp->wflags & WARN_WERR)) - return(1); + while (tcgetpgrp(STDOUT_FILENO) != getpid()) + nanosleep(&timeout, NULL); - warnx("considering warnings as errors"); - return(0); + execvp(argv[0], argv); + mandoc_msg(MANDOCERR_EXEC, 0, 0, "%s: %s", argv[0], strerror(errno)); + _exit(mandoc_msg_getrc()); }