=================================================================== RCS file: /cvs/mandoc/read.c,v retrieving revision 1.136 retrieving revision 1.154 diff -u -p -r1.136 -r1.154 --- mandoc/read.c 2015/04/18 17:01:58 1.136 +++ mandoc/read.c 2016/12/07 22:59:29 1.154 @@ -1,7 +1,7 @@ -/* $Id: read.c,v 1.136 2015/04/18 17:01:58 schwarze Exp $ */ +/* $Id: read.c,v 1.154 2016/12/07 22:59:29 schwarze Exp $ */ /* * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons - * Copyright (c) 2010-2015 Ingo Schwarze + * Copyright (c) 2010-2016 Ingo Schwarze * Copyright (c) 2010, 2012 Joerg Sonnenberger * * Permission to use, copy, modify, and distribute this software for any @@ -19,23 +19,23 @@ #include "config.h" #include -#if HAVE_MMAP #include #include -#endif -#include #include #include +#if HAVE_ERR +#include +#endif #include #include -#include #include #include #include #include #include #include +#include #include "mandoc_aux.h" #include "mandoc.h" @@ -43,13 +43,13 @@ #include "mdoc.h" #include "man.h" #include "libmandoc.h" +#include "roff_int.h" #define REPARSE_LIMIT 1000 struct mparse { struct roff_man *man; /* man parser */ struct roff *roff; /* roff parser (!NULL) */ - const struct mchars *mchars; /* character table */ char *sodest; /* filename pointed to by .so */ const char *file; /* filename of current input file */ struct buf *primary; /* buffer currently being parsed */ @@ -59,10 +59,10 @@ struct mparse { enum mandoclevel file_status; /* status of current parse */ enum mandoclevel wlevel; /* ignore messages below this */ int options; /* parser options */ + int gzip; /* current input file is gzipped */ int filenc; /* encoding of the current file */ int reparse_count; /* finite interp. stack */ int line; /* line number in the file */ - pid_t child; /* the gunzip(1) process */ }; static void choose_parser(struct mparse *); @@ -129,7 +129,6 @@ static const char * const mandocerrs[MANDOCERR_MAX] = "blocks badly nested", "nested displays are not portable", "moving content out of list", - ".Vt block has child macro", "fill mode already enabled, skipping", "fill mode already disabled, skipping", "line scope broken", @@ -142,7 +141,7 @@ static const char * const mandocerrs[MANDOCERR_MAX] = "empty argument, using 0n", "missing display type, using -ragged", "list type is not the first argument", - "missing -width in -tag list, using 8n", + "missing -width in -tag list, using 6n", "missing utility name, using \"\"", "missing function name, using \"\"", "empty head in list item", @@ -216,6 +215,7 @@ static const char * const mandocerrs[MANDOCERR_MAX] = /* related to request and macro arguments */ "escaped character not allowed in a name", "NOT IMPLEMENTED: Bd -file", + "skipping display without arguments", "missing list type, using -item", "missing manual name, using \"\"", "uname(3) system call failed, using UNKNOWN", @@ -290,25 +290,14 @@ choose_parser(struct mparse *curp) } if (format == MPARSE_MDOC) { - if (curp->man == NULL) - curp->man = mdoc_alloc( - curp->roff, curp, curp->defos, - MPARSE_QUICK & curp->options ? 1 : 0); - else - curp->man->macroset = MACROSET_MDOC; mdoc_hash_init(); - return; - } - - /* Fall back to man(7) as a last resort. */ - - if (curp->man == NULL) - curp->man = man_alloc( - curp->roff, curp, curp->defos, - MPARSE_QUICK & curp->options ? 1 : 0); - else + curp->man->macroset = MACROSET_MDOC; + curp->man->first->tok = TOKEN_NONE; + } else { + man_hash_init(); curp->man->macroset = MACROSET_MAN; - man_hash_init(); + curp->man->first->tok = TOKEN_NONE; + } } /* @@ -326,11 +315,11 @@ mparse_buf_r(struct mparse *curp, struct buf blk, size const char *save_file; char *cp; size_t pos; /* byte number in the ln buffer */ + size_t j; /* auxiliary byte number in the blk buffer */ enum rofferr rr; int of; int lnn; /* line number in the real file */ int fd; - pid_t save_child; unsigned char c; memset(&ln, 0, sizeof(ln)); @@ -432,14 +421,21 @@ mparse_buf_r(struct mparse *curp, struct buf blk, size } if ('"' == blk.buf[i + 1] || '#' == blk.buf[i + 1]) { + j = i; i += 2; /* Comment, skip to end of line */ for (; i < blk.sz; ++i) { - if ('\n' == blk.buf[i]) { - ++i; - ++lnn; - break; - } + if (blk.buf[i] != '\n') + continue; + if (blk.buf[i - 1] == ' ' || + blk.buf[i - 1] == '\t') + mandoc_msg( + MANDOCERR_SPACE_EOL, + curp, curp->line, + pos + i-1 - j, NULL); + ++i; + ++lnn; + break; } /* Backout trailing whitespaces */ @@ -542,10 +538,9 @@ rerun: if (curp->secondary) curp->secondary->sz -= pos + 1; save_file = curp->file; - save_child = curp->child; - if (mparse_open(curp, &fd, ln.buf + of) == - MANDOCLEVEL_OK) { + if ((fd = mparse_open(curp, ln.buf + of)) != -1) { mparse_readfd(curp, fd, ln.buf + of); + close(fd); curp->file = save_file; } else { curp->file = save_file; @@ -560,22 +555,13 @@ rerun: of = 0; mparse_buf_r(curp, ln, of, 0); } - curp->child = save_child; pos = 0; continue; default: break; } - /* - * If input parsers have not been allocated, do so now. - * We keep these instanced between parsers, but set them - * locally per parse routine since we can use different - * parsers with each one. - */ - - if (curp->man == NULL || - curp->man->macroset == MACROSET_NONE) + if (curp->man->macroset == MACROSET_NONE) choose_parser(curp); /* @@ -587,18 +573,12 @@ rerun: * Do the same for ROFF_EQN. */ - if (rr == ROFF_TBL) { + if (rr == ROFF_TBL) while ((span = roff_span(curp->roff)) != NULL) - if (curp->man->macroset == MACROSET_MDOC) - mdoc_addspan(curp->man, span); - else - man_addspan(curp->man, span); - } else if (rr == ROFF_EQN) { - if (curp->man->macroset == MACROSET_MDOC) - mdoc_addeqn(curp->man, roff_eqn(curp->roff)); - else - man_addeqn(curp->man, roff_eqn(curp->roff)); - } else if ((curp->man->macroset == MACROSET_MDOC ? + roff_addtbl(curp->man, span); + else if (rr == ROFF_EQN) + roff_addeqn(curp->man, roff_eqn(curp->roff)); + else if ((curp->man->macroset == MACROSET_MDOC ? mdoc_parseln(curp->man, curp->line, ln.buf, of) : man_parseln(curp->man, curp->line, ln.buf, of)) == 2) break; @@ -620,16 +600,15 @@ static int read_whole_file(struct mparse *curp, const char *file, int fd, struct buf *fb, int *with_mmap) { + gzFile gz; size_t off; ssize_t ssz; -#if HAVE_MMAP struct stat st; - if (-1 == fstat(fd, &st)) { - perror(file); - exit((int)MANDOCLEVEL_SYSERR); - } + if (fstat(fd, &st) == -1) + err((int)MANDOCLEVEL_SYSERR, "%s", file); + /* * If we're a regular file, try just reading in the whole entry * via mmap(). This is faster than reading it into blocks, and @@ -637,19 +616,24 @@ read_whole_file(struct mparse *curp, const char *file, * concerned that this is going to tank any machines. */ - if (S_ISREG(st.st_mode)) { + if (curp->gzip == 0 && S_ISREG(st.st_mode)) { if (st.st_size > 0x7fffffff) { mandoc_msg(MANDOCERR_TOOLARGE, curp, 0, 0, NULL); - return(0); + return 0; } *with_mmap = 1; fb->sz = (size_t)st.st_size; fb->buf = mmap(NULL, fb->sz, PROT_READ, MAP_SHARED, fd, 0); if (fb->buf != MAP_FAILED) - return(1); + return 1; } -#endif + if (curp->gzip) { + if ((gz = gzdopen(fd, "rb")) == NULL) + err((int)MANDOCLEVEL_SYSERR, "%s", file); + } else + gz = NULL; + /* * If this isn't a regular file (like, say, stdin), then we must * go the old way and just read things in bit by bit. @@ -668,30 +652,26 @@ read_whole_file(struct mparse *curp, const char *file, } resize_buf(fb, 65536); } - ssz = read(fd, fb->buf + (int)off, fb->sz - off); + ssz = curp->gzip ? + gzread(gz, fb->buf + (int)off, fb->sz - off) : + read(fd, fb->buf + (int)off, fb->sz - off); if (ssz == 0) { fb->sz = off; - return(1); + return 1; } - if (ssz == -1) { - perror(file); - exit((int)MANDOCLEVEL_SYSERR); - } + if (ssz == -1) + err((int)MANDOCLEVEL_SYSERR, "%s", file); off += (size_t)ssz; } free(fb->buf); fb->buf = NULL; - return(0); + return 0; } static void mparse_end(struct mparse *curp) { - - if (curp->man == NULL && curp->sodest == NULL) - curp->man = man_alloc(curp->roff, curp, curp->defos, - curp->options & MPARSE_QUICK ? 1 : 0); if (curp->man->macroset == MACROSET_NONE) curp->man->macroset = MACROSET_MAN; if (curp->man->macroset == MACROSET_MDOC) @@ -751,7 +731,7 @@ mparse_readmem(struct mparse *curp, void *buf, size_t blk.sz = len; mparse_parse_buffer(curp, blk, file); - return(curp->file_status); + return curp->file_status; } /* @@ -771,115 +751,53 @@ mparse_readfd(struct mparse *curp, int fd, const char (MPARSE_UTF8 | MPARSE_LATIN1); mparse_parse_buffer(curp, blk, file); curp->filenc = save_filenc; -#if HAVE_MMAP if (with_mmap) munmap(blk.buf, blk.sz); else -#endif free(blk.buf); } - - if (fd != STDIN_FILENO && close(fd) == -1) - perror(file); - - mparse_wait(curp); - return(curp->file_status); + return curp->file_status; } -enum mandoclevel -mparse_open(struct mparse *curp, int *fd, const char *file) +int +mparse_open(struct mparse *curp, const char *file) { - int pfd[2]; - int save_errno; char *cp; + int fd; curp->file = file; + cp = strrchr(file, '.'); + curp->gzip = (cp != NULL && ! strcmp(cp + 1, "gz")); - /* Unless zipped, try to just open the file. */ + /* First try to use the filename as it is. */ - if ((cp = strrchr(file, '.')) == NULL || - strcmp(cp + 1, "gz")) { - curp->child = 0; - if ((*fd = open(file, O_RDONLY)) != -1) - return(MANDOCLEVEL_OK); + if ((fd = open(file, O_RDONLY)) != -1) + return fd; - /* Open failed; try to append ".gz". */ + /* + * If that doesn't work and the filename doesn't + * already end in .gz, try appending .gz. + */ + if ( ! curp->gzip) { mandoc_asprintf(&cp, "%s.gz", file); - file = cp; - } else - cp = NULL; - - /* Before forking, make sure the file can be read. */ - - save_errno = errno; - if (access(file, R_OK) == -1) { - if (cp != NULL) - errno = save_errno; + fd = open(cp, O_RDONLY); free(cp); - *fd = -1; - curp->child = 0; - mandoc_msg(MANDOCERR_FILE, curp, 0, 0, strerror(errno)); - return(MANDOCLEVEL_ERROR); - } - - /* Run gunzip(1). */ - - if (pipe(pfd) == -1) { - perror("pipe"); - exit((int)MANDOCLEVEL_SYSERR); - } - - switch (curp->child = fork()) { - case -1: - perror("fork"); - exit((int)MANDOCLEVEL_SYSERR); - case 0: - close(pfd[0]); - if (dup2(pfd[1], STDOUT_FILENO) == -1) { - perror("dup"); - exit((int)MANDOCLEVEL_SYSERR); + if (fd != -1) { + curp->gzip = 1; + return fd; } - signal(SIGPIPE, SIG_DFL); - execlp("gunzip", "gunzip", "-c", file, NULL); - perror("exec"); - exit((int)MANDOCLEVEL_SYSERR); - default: - close(pfd[1]); - *fd = pfd[0]; - return(MANDOCLEVEL_OK); } -} -enum mandoclevel -mparse_wait(struct mparse *curp) -{ - int status; + /* Neither worked, give up. */ - if (curp->child == 0) - return(MANDOCLEVEL_OK); - - if (waitpid(curp->child, &status, 0) == -1) { - perror("wait"); - exit((int)MANDOCLEVEL_SYSERR); - } - curp->child = 0; - if (WIFSIGNALED(status)) { - mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0, - "gunzip died from signal %d", WTERMSIG(status)); - return(MANDOCLEVEL_ERROR); - } - if (WEXITSTATUS(status)) { - mandoc_vmsg(MANDOCERR_FILE, curp, 0, 0, - "gunzip failed with code %d", WEXITSTATUS(status)); - return(MANDOCLEVEL_ERROR); - } - return(MANDOCLEVEL_OK); + mandoc_msg(MANDOCERR_FILE, curp, 0, 0, strerror(errno)); + return -1; } struct mparse * mparse_alloc(int options, enum mandoclevel wlevel, mandocmsg mmsg, - const struct mchars *mchars, const char *defos) + const char *defos) { struct mparse *curp; @@ -890,37 +808,25 @@ mparse_alloc(int options, enum mandoclevel wlevel, man curp->mmsg = mmsg; curp->defos = defos; - curp->mchars = mchars; - curp->roff = roff_alloc(curp, curp->mchars, options); + curp->roff = roff_alloc(curp, options); + curp->man = roff_man_alloc( curp->roff, curp, curp->defos, + curp->options & MPARSE_QUICK ? 1 : 0); if (curp->options & MPARSE_MDOC) { - curp->man = mdoc_alloc( - curp->roff, curp, curp->defos, - curp->options & MPARSE_QUICK ? 1 : 0); mdoc_hash_init(); - } - if (curp->options & MPARSE_MAN) { - curp->man = man_alloc( - curp->roff, curp, curp->defos, - curp->options & MPARSE_QUICK ? 1 : 0); + curp->man->macroset = MACROSET_MDOC; + } else if (curp->options & MPARSE_MAN) { man_hash_init(); + curp->man->macroset = MACROSET_MAN; } - - return(curp); + curp->man->first->tok = TOKEN_NONE; + return curp; } void mparse_reset(struct mparse *curp) { - roff_reset(curp->roff); - - if (curp->man != NULL) { - if (curp->man->macroset == MACROSET_MDOC) - mdoc_reset(curp->man); - else - man_reset(curp->man); - curp->man->macroset = MACROSET_NONE; - } + roff_man_reset(curp->man); if (curp->secondary) curp->secondary->sz = 0; @@ -934,10 +840,7 @@ void mparse_free(struct mparse *curp) { - if (curp->man->macroset == MACROSET_MDOC) - mdoc_free(curp->man); - if (curp->man->macroset == MACROSET_MAN) - man_free(curp->man); + roff_man_free(curp->man); if (curp->roff) roff_free(curp->roff); if (curp->secondary) @@ -999,13 +902,13 @@ const char * mparse_strerror(enum mandocerr er) { - return(mandocerrs[er]); + return mandocerrs[er]; } const char * mparse_strlevel(enum mandoclevel lvl) { - return(mandoclevels[lvl]); + return mandoclevels[lvl]; } void @@ -1021,5 +924,5 @@ mparse_getkeep(const struct mparse *p) { assert(p->secondary); - return(p->secondary->sz ? p->secondary->buf : NULL); + return p->secondary->sz ? p->secondary->buf : NULL; }