=================================================================== RCS file: /cvs/mandoc/mdoc.c,v retrieving revision 1.12 retrieving revision 1.193 diff -u -p -r1.12 -r1.193 --- mandoc/mdoc.c 2008/12/30 19:06:03 1.12 +++ mandoc/mdoc.c 2011/07/27 12:41:02 1.193 @@ -1,33 +1,40 @@ -/* $Id: mdoc.c,v 1.12 2008/12/30 19:06:03 kristaps Exp $ */ +/* $Id: mdoc.c,v 1.193 2011/07/27 12:41:02 kristaps Exp $ */ /* - * Copyright (c) 2008 Kristaps Dzonsons + * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons + * Copyright (c) 2010 Ingo Schwarze * * 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 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. */ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include + #include -#include -#include #include -#include #include +#include #include +#include -#include "private.h" +#include "mdoc.h" +#include "mandoc.h" +#include "libmdoc.h" +#include "libmandoc.h" const char *const __mdoc_macronames[MDOC_MAX] = { - "\\\"", "Dd", "Dt", "Os", + "Ap", "Dd", "Dt", "Os", "Sh", "Ss", "Pp", "D1", "Dl", "Bd", "Ed", "Bl", "El", "It", "Ad", "An", @@ -38,11 +45,11 @@ const char *const __mdoc_macronames[MDOC_MAX] = { "Nm", "Op", "Ot", "Pa", "Rv", "St", "Va", "Vt", /* LINTED */ - "Xr", "\%A", "\%B", "\%D", + "Xr", "%A", "%B", "%D", /* LINTED */ - "\%I", "\%J", "\%N", "\%O", + "%I", "%J", "%N", "%O", /* LINTED */ - "\%P", "\%R", "\%T", "\%V", + "%P", "%R", "%T", "%V", "Ac", "Ao", "Aq", "At", "Bc", "Bf", "Bo", "Bq", "Bsx", "Bx", "Db", "Dc", @@ -56,7 +63,14 @@ const char *const __mdoc_macronames[MDOC_MAX] = { "Tn", "Ux", "Xc", "Xo", "Fo", "Fc", "Oo", "Oc", "Bk", "Ek", "Bt", "Hf", - "Fr", "Ud", + "Fr", "Ud", "Lb", "Lp", + "Lk", "Mt", "Brq", "Bro", + /* LINTED */ + "Brc", "%C", "Es", "En", + /* LINTED */ + "Dx", "%Q", "br", "sp", + /* LINTED */ + "%U", "Ta" }; const char *const __mdoc_argnames[MDOC_ARG_MAX] = { @@ -67,640 +81,913 @@ const char *const __mdoc_argnames[MDOC_ARG_MAX] = { "tag", "diag", "hang", "ohang", "inset", "column", "width", "compact", "std", - "p1003.1-88", "p1003.1-90", "p1003.1-96", - "p1003.1-2001", "p1003.1-2004", "p1003.1", - "p1003.1b", "p1003.1b-93", "p1003.1c-95", - "p1003.1g-2000", "p1003.2-92", "p1387.2-95", - "p1003.2", "p1387.2", "isoC-90", - "isoC-amd1", "isoC-tcor1", "isoC-tcor2", - "isoC-99", "ansiC", "ansiC-89", - "ansiC-99", "ieee754", "iso8802-3", - "xpg3", "xpg4", "xpg4.2", - "xpg4.3", "xbd5", "xcu5", - "xsh5", "xns5", "xns5.2d2.0", - "xcurses4.2", "susv2", "susv3", - "svid4", "filled", "words", + "filled", "words", "emphasis", + "symbolic", "nested", "centered" }; -const struct mdoc_macro __mdoc_macros[MDOC_MAX] = { - { NULL, 0 }, /* \" */ - { macro_prologue_ddate, 0 }, /* Dd */ - { macro_prologue_dtitle, 0 }, /* Dt */ - { macro_prologue_os, 0 }, /* Os */ - { macro_scoped_implicit, 0 }, /* Sh */ - { macro_scoped_implicit, 0 }, /* Ss */ - { macro_text, 0 }, /* Pp */ - { macro_scoped_line, 0 }, /* D1 */ - { macro_scoped_line, 0 }, /* Dl */ - { macro_scoped_explicit, MDOC_EXPLICIT }, /* Bd */ - { macro_scoped_explicit, 0 }, /* Ed */ - { macro_scoped_explicit, MDOC_EXPLICIT }, /* Bl */ - { macro_scoped_explicit, 0 }, /* El */ - { NULL, 0 }, /* It */ - { macro_text, MDOC_CALLABLE }, /* Ad */ - { NULL, 0 }, /* An */ - { macro_text, MDOC_CALLABLE }, /* Ar */ - { macro_constant, MDOC_QUOTABLE }, /* Cd */ - { macro_text, MDOC_CALLABLE }, /* Cm */ - { macro_text, MDOC_CALLABLE }, /* Dv */ - { macro_text, MDOC_CALLABLE }, /* Er */ - { macro_text, MDOC_CALLABLE }, /* Ev */ - { macro_constant_argv, 0 }, /* Ex */ - { macro_text, MDOC_CALLABLE }, /* Fa */ - { NULL, 0 }, /* Fd */ - { macro_text, MDOC_CALLABLE }, /* Fl */ - { macro_text, MDOC_CALLABLE | MDOC_QUOTABLE }, /* Fn */ - { macro_text, 0 }, /* Ft */ - { macro_text, MDOC_CALLABLE }, /* Ic */ - { NULL, 0 }, /* In */ - { macro_text, MDOC_CALLABLE }, /* Li */ - { macro_constant, 0 }, /* Nd */ - { NULL, 0 }, /* Nm */ - { NULL, 0 }, /* Op */ - { NULL, 0 }, /* Ot */ - { macro_text, MDOC_CALLABLE }, /* Pa */ - { macro_constant_argv, 0 }, /* Rv */ - { NULL, 0 }, /* St */ - { macro_text, MDOC_CALLABLE }, /* Va */ - { macro_text, MDOC_CALLABLE }, /* Vt */ - { NULL, 0 }, /* Xr */ - { NULL, 0 }, /* %A */ - { NULL, 0 }, /* %B */ - { NULL, 0 }, /* %D */ - { NULL, 0 }, /* %I */ - { NULL, 0 }, /* %J */ - { NULL, 0 }, /* %N */ - { NULL, 0 }, /* %O */ - { NULL, 0 }, /* %P */ - { NULL, 0 }, /* %R */ - { NULL, 0 }, /* %T */ - { NULL, 0 }, /* %V */ - { NULL, 0 }, /* Ac */ - { NULL, 0 }, /* Ao */ - { macro_scoped_pline, MDOC_CALLABLE }, /* Aq */ - { macro_constant, 0 }, /* At */ - { NULL, 0 }, /* Bc */ - { NULL, 0 }, /* Bf */ - { NULL, 0 }, /* Bo */ - { macro_scoped_pline, MDOC_CALLABLE }, /* Bq */ - { macro_constant_delimited, 0 }, /* Bsx */ - { macro_constant_delimited, 0 }, /* Bx */ - { NULL, 0 }, /* Db */ - { NULL, 0 }, /* Dc */ - { NULL, 0 }, /* Do */ - { macro_scoped_pline, MDOC_CALLABLE }, /* Dq */ - { NULL, 0 }, /* Ec */ - { NULL, 0 }, /* Ef */ - { macro_text, MDOC_CALLABLE }, /* Em */ - { NULL, 0 }, /* Eo */ - { macro_constant_delimited, 0 }, /* Fx */ - { macro_text, 0 }, /* Ms */ - { NULL, 0 }, /* No */ - { NULL, 0 }, /* Ns */ - { macro_constant_delimited, 0 }, /* Nx */ - { macro_constant_delimited, 0 }, /* Ox */ - { NULL, 0 }, /* Pc */ - { NULL, 0 }, /* Pf */ - { NULL, 0 }, /* Po */ - { macro_scoped_pline, MDOC_CALLABLE }, /* Pq */ - { NULL, 0 }, /* Qc */ - { macro_scoped_pline, MDOC_CALLABLE }, /* Ql */ - { NULL, 0 }, /* Qo */ - { macro_scoped_pline, MDOC_CALLABLE }, /* Qq */ - { NULL, 0 }, /* Re */ - { NULL, 0 }, /* Rs */ - { NULL, 0 }, /* Sc */ - { NULL, 0 }, /* So */ - { macro_scoped_pline, MDOC_CALLABLE }, /* Sq */ - { NULL, 0 }, /* Sm */ - { macro_text, MDOC_CALLABLE }, /* Sx */ - { macro_text, MDOC_CALLABLE }, /* Sy */ - { macro_text, MDOC_CALLABLE }, /* Tn */ - { macro_constant_delimited, 0 }, /* Ux */ - { NULL, 0 }, /* Xc */ - { NULL, 0 }, /* Xo */ - { NULL, 0 }, /* Fo */ - { NULL, 0 }, /* Fc */ - { NULL, 0 }, /* Oo */ - { NULL, 0 }, /* Oc */ - { NULL, 0 }, /* Bk */ - { NULL, 0 }, /* Ek */ - { macro_constant, 0 }, /* Bt */ - { macro_constant, 0 }, /* Hf */ - { macro_obsolete, 0 }, /* Fr */ - { macro_constant, 0 }, /* Ud */ -}; - const char * const *mdoc_macronames = __mdoc_macronames; const char * const *mdoc_argnames = __mdoc_argnames; -const struct mdoc_macro * const mdoc_macros = __mdoc_macros; +static void mdoc_node_free(struct mdoc_node *); +static void mdoc_node_unlink(struct mdoc *, + struct mdoc_node *); +static void mdoc_free1(struct mdoc *); +static void mdoc_alloc1(struct mdoc *); +static struct mdoc_node *node_alloc(struct mdoc *, int, int, + enum mdoct, enum mdoc_type); +static int node_append(struct mdoc *, + struct mdoc_node *); +#if 0 +static int mdoc_preptext(struct mdoc *, int, char *, int); +#endif +static int mdoc_ptext(struct mdoc *, int, char *, int); +static int mdoc_pmacro(struct mdoc *, int, char *, int); -static struct mdoc_arg *argdup(size_t, const struct mdoc_arg *); -static void argfree(size_t, struct mdoc_arg *); -static void argcpy(struct mdoc_arg *, - const struct mdoc_arg *); -static char **paramdup(size_t, const char **); -static void paramfree(size_t, char **); +const struct mdoc_node * +mdoc_node(const struct mdoc *m) +{ -static void mdoc_node_freelist(struct mdoc_node *); -static void mdoc_node_append(struct mdoc *, int, - struct mdoc_node *); -static void mdoc_elem_free(struct mdoc_elem *); -static void mdoc_text_free(struct mdoc_text *); + assert( ! (MDOC_HALT & m->flags)); + return(m->first); +} -const struct mdoc_node * -mdoc_result(struct mdoc *mdoc) +const struct mdoc_meta * +mdoc_meta(const struct mdoc *m) { - return(mdoc->first); + assert( ! (MDOC_HALT & m->flags)); + return(&m->meta); } +/* + * Frees volatile resources (parse tree, meta-data, fields). + */ +static void +mdoc_free1(struct mdoc *mdoc) +{ + + if (mdoc->first) + mdoc_node_delete(mdoc, mdoc->first); + if (mdoc->meta.title) + free(mdoc->meta.title); + if (mdoc->meta.os) + free(mdoc->meta.os); + if (mdoc->meta.name) + free(mdoc->meta.name); + if (mdoc->meta.arch) + free(mdoc->meta.arch); + if (mdoc->meta.vol) + free(mdoc->meta.vol); + if (mdoc->meta.msec) + free(mdoc->meta.msec); + if (mdoc->meta.date) + free(mdoc->meta.date); +} + + +/* + * Allocate all volatile resources (parse tree, meta-data, fields). + */ +static void +mdoc_alloc1(struct mdoc *mdoc) +{ + + memset(&mdoc->meta, 0, sizeof(struct mdoc_meta)); + mdoc->flags = 0; + mdoc->lastnamed = mdoc->lastsec = SEC_NONE; + mdoc->last = mandoc_calloc(1, sizeof(struct mdoc_node)); + mdoc->first = mdoc->last; + mdoc->last->type = MDOC_ROOT; + mdoc->next = MDOC_NEXT_CHILD; +} + + +/* + * Free up volatile resources (see mdoc_free1()) then re-initialises the + * data with mdoc_alloc1(). After invocation, parse data has been reset + * and the parser is ready for re-invocation on a new tree; however, + * cross-parse non-volatile data is kept intact. + */ void +mdoc_reset(struct mdoc *mdoc) +{ + + mdoc_free1(mdoc); + mdoc_alloc1(mdoc); +} + + +/* + * Completely free up all volatile and non-volatile parse resources. + * After invocation, the pointer is no longer usable. + */ +void mdoc_free(struct mdoc *mdoc) { - if (mdoc->first) - mdoc_node_freelist(mdoc->first); - if (mdoc->htab) - mdoc_tokhash_free(mdoc->htab); - + mdoc_free1(mdoc); free(mdoc); } +/* + * Allocate volatile and non-volatile parse resources. + */ struct mdoc * -mdoc_alloc(void *data, const struct mdoc_cb *cb) +mdoc_alloc(struct roff *roff, struct mparse *parse) { struct mdoc *p; - p = xcalloc(1, sizeof(struct mdoc)); + p = mandoc_calloc(1, sizeof(struct mdoc)); - p->data = data; - (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb)); + p->parse = parse; + p->roff = roff; - p->htab = mdoc_tokhash_alloc(); + mdoc_hash_init(); + mdoc_alloc1(p); return(p); } +/* + * Climb back up the parse tree, validating open scopes. Mostly calls + * through to macro_end() in macro.c. + */ int -mdoc_parseln(struct mdoc *mdoc, char *buf) +mdoc_endparse(struct mdoc *m) { - int c, i; - char tmp[5]; - if ('.' != *buf) { - mdoc_word_alloc(mdoc, 0, buf); + assert( ! (MDOC_HALT & m->flags)); + if (mdoc_macroend(m)) return(1); - } + m->flags |= MDOC_HALT; + return(0); +} - if (buf[1] && '\\' == buf[1]) - if (buf[2] && '\"' == buf[2]) - return(1); +int +mdoc_addeqn(struct mdoc *m, const struct eqn *ep) +{ + struct mdoc_node *n; - i = 1; - while (buf[i] && ! isspace(buf[i]) && i < (int)sizeof(tmp)) - i++; + assert( ! (MDOC_HALT & m->flags)); - if (i == (int)sizeof(tmp)) - return(mdoc_err(mdoc, -1, 1, ERR_MACRO_NOTSUP)); - else if (i <= 2) - return(mdoc_err(mdoc, -1, 1, ERR_MACRO_NOTSUP)); + /* No text before an initial macro. */ - i--; + if (SEC_NONE == m->lastnamed) { + mdoc_pmsg(m, ep->ln, ep->pos, MANDOCERR_NOTEXT); + return(1); + } - (void)memcpy(tmp, buf + 1, (size_t)i); - tmp[i++] = 0; + n = node_alloc(m, ep->ln, ep->pos, MDOC_MAX, MDOC_EQN); + n->eqn = ep; - if (MDOC_MAX == (c = mdoc_find(mdoc, tmp))) - return(mdoc_err(mdoc, c, 1, ERR_MACRO_NOTSUP)); + if ( ! node_append(m, n)) + return(0); - while (buf[i] && isspace(buf[i])) - i++; - - return(mdoc_macro(mdoc, c, 1, &i, buf)); + m->next = MDOC_NEXT_SIBLING; + return(1); } - -void -mdoc_msg(struct mdoc *mdoc, int pos, const char *fmt, ...) +int +mdoc_addspan(struct mdoc *m, const struct tbl_span *sp) { - va_list ap; - char buf[256]; + struct mdoc_node *n; - if (NULL == mdoc->cb.mdoc_msg) - return; + assert( ! (MDOC_HALT & m->flags)); - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf), fmt, ap); - va_end(ap); + /* No text before an initial macro. */ - (*mdoc->cb.mdoc_msg)(mdoc->data, pos, buf); -} + if (SEC_NONE == m->lastnamed) { + mdoc_pmsg(m, sp->line, 0, MANDOCERR_NOTEXT); + return(1); + } + n = node_alloc(m, sp->line, 0, MDOC_MAX, MDOC_TBL); + n->span = sp; -int -mdoc_err(struct mdoc *mdoc, int tok, int pos, enum mdoc_err type) -{ - - if (NULL == mdoc->cb.mdoc_err) + if ( ! node_append(m, n)) return(0); - return((*mdoc->cb.mdoc_err)(mdoc->data, tok, pos, type)); + + m->next = MDOC_NEXT_SIBLING; + return(1); } +/* + * Main parse routine. Parses a single line -- really just hands off to + * the macro (mdoc_pmacro()) or text parser (mdoc_ptext()). + */ int -mdoc_warn(struct mdoc *mdoc, int tok, int pos, enum mdoc_warn type) +mdoc_parseln(struct mdoc *m, int ln, char *buf, int offs) { - if (NULL == mdoc->cb.mdoc_warn) - return(0); - return((*mdoc->cb.mdoc_warn)(mdoc->data, tok, pos, type)); -} + assert( ! (MDOC_HALT & m->flags)); + m->flags |= MDOC_NEWLINE; + /* + * Let the roff nS register switch SYNOPSIS mode early, + * such that the parser knows at all times + * whether this mode is on or off. + * Note that this mode is also switched by the Sh macro. + */ + if (roff_regisset(m->roff, REG_nS)) { + if (roff_regget(m->roff, REG_nS)) + m->flags |= MDOC_SYNOPSIS; + else + m->flags &= ~MDOC_SYNOPSIS; + } + + return(mandoc_getcontrol(buf, &offs) ? + mdoc_pmacro(m, ln, buf, offs) : + mdoc_ptext(m, ln, buf, offs)); +} + int -mdoc_macro(struct mdoc *mdoc, int tok, int ppos, int *pos, char *buf) +mdoc_macro(MACRO_PROT_ARGS) { + assert(tok < MDOC_MAX); - if (NULL == (mdoc_macros[tok].fp)) { - (void)mdoc_err(mdoc, tok, ppos, ERR_MACRO_NOTSUP); - return(0); - } + /* If we're in the body, deny prologue calls. */ - if (1 != ppos && ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) { - (void)mdoc_err(mdoc, tok, ppos, ERR_MACRO_NOTCALL); - return(0); + if (MDOC_PROLOGUE & mdoc_macros[tok].flags && + MDOC_PBODY & m->flags) { + mdoc_pmsg(m, line, ppos, MANDOCERR_BADBODY); + return(1); } - /*mdoc_msg(mdoc, ppos, "calling `%s'", mdoc_macronames[tok]);*/ + /* If we're in the prologue, deny "body" macros. */ - return((*mdoc_macros[tok].fp)(mdoc, tok, ppos, pos, buf)); + if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) && + ! (MDOC_PBODY & m->flags)) { + mdoc_pmsg(m, line, ppos, MANDOCERR_BADPROLOG); + if (NULL == m->meta.msec) + m->meta.msec = mandoc_strdup("1"); + if (NULL == m->meta.title) + m->meta.title = mandoc_strdup("UNKNOWN"); + if (NULL == m->meta.vol) + m->meta.vol = mandoc_strdup("LOCAL"); + if (NULL == m->meta.os) + m->meta.os = mandoc_strdup("LOCAL"); + if (NULL == m->meta.date) + m->meta.date = mandoc_normdate + (m->parse, NULL, line, ppos); + m->flags |= MDOC_PBODY; + } + + return((*mdoc_macros[tok].fp)(m, tok, line, ppos, pos, buf)); } -static void -mdoc_node_append(struct mdoc *mdoc, int pos, struct mdoc_node *p) +static int +node_append(struct mdoc *mdoc, struct mdoc_node *p) { - const char *nn, *on, *nt, *ot, *act; - switch (p->type) { - case (MDOC_TEXT): - nn = p->data.text.string; - nt = "text"; + assert(mdoc->last); + assert(mdoc->first); + assert(MDOC_ROOT != p->type); + + switch (mdoc->next) { + case (MDOC_NEXT_SIBLING): + mdoc->last->next = p; + p->prev = mdoc->last; + p->parent = mdoc->last->parent; break; - case (MDOC_BODY): - nn = mdoc_macronames[p->data.body.tok]; - nt = "body"; + case (MDOC_NEXT_CHILD): + mdoc->last->child = p; + p->parent = mdoc->last; break; - case (MDOC_ELEM): - nn = mdoc_macronames[p->data.elem.tok]; - nt = "elem"; - break; - case (MDOC_HEAD): - nn = mdoc_macronames[p->data.head.tok]; - nt = "head"; - break; - case (MDOC_BLOCK): - nn = mdoc_macronames[p->data.block.tok]; - nt = "block"; - break; default: abort(); /* NOTREACHED */ } - if (NULL == mdoc->first) { - assert(NULL == mdoc->last); - mdoc->first = p; - mdoc->last = p; - mdoc_msg(mdoc, pos, "parse: root %s `%s'", nt, nn); - return; - } + p->parent->nchild++; - switch (mdoc->last->type) { - case (MDOC_TEXT): - on = ""; - ot = "text"; - break; + /* + * Copy over the normalised-data pointer of our parent. Not + * everybody has one, but copying a null pointer is fine. + */ + + switch (p->type) { case (MDOC_BODY): - on = mdoc_macronames[mdoc->last->data.body.tok]; - ot = "body"; - break; - case (MDOC_ELEM): - on = mdoc_macronames[mdoc->last->data.elem.tok]; - ot = "elem"; - break; + /* FALLTHROUGH */ + case (MDOC_TAIL): + /* FALLTHROUGH */ case (MDOC_HEAD): - on = mdoc_macronames[mdoc->last->data.head.tok]; - ot = "head"; + p->norm = p->parent->norm; break; - case (MDOC_BLOCK): - on = mdoc_macronames[mdoc->last->data.block.tok]; - ot = "block"; - break; default: - abort(); - /* NOTREACHED */ + break; } + if ( ! mdoc_valid_pre(mdoc, p)) + return(0); + switch (p->type) { + case (MDOC_HEAD): + assert(MDOC_BLOCK == p->parent->type); + p->parent->head = p; + break; + case (MDOC_TAIL): + assert(MDOC_BLOCK == p->parent->type); + p->parent->tail = p; + break; case (MDOC_BODY): - p->parent = mdoc->last->parent; - mdoc->last->next = p; - p->prev = mdoc->last; - act = "sibling"; + if (p->end) + break; + assert(MDOC_BLOCK == p->parent->type); + p->parent->body = p; break; - - case (MDOC_HEAD): - assert(mdoc->last->type == MDOC_BLOCK); - p->parent = mdoc->last; - mdoc->last->child = p; - act = "child"; + default: break; + } + mdoc->last = p; + + switch (p->type) { + case (MDOC_TBL): + /* FALLTHROUGH */ + case (MDOC_TEXT): + if ( ! mdoc_valid_post(mdoc)) + return(0); + break; default: - switch (mdoc->last->type) { - case (MDOC_BODY): - /* FALLTHROUGH */ - case (MDOC_HEAD): - p->parent = mdoc->last; - mdoc->last->child = p; - act = "child"; - break; - default: - p->parent = mdoc->last->parent; - p->prev = mdoc->last; - mdoc->last->next = p; - act = "sibling"; - break; - } break; } - mdoc_msg(mdoc, pos, "parse: %s `%s' %s %s `%s'", - nt, nn, act, ot, on); - mdoc->last = p; + return(1); } -/* FIXME: deprecate paramsz, params. */ -void -mdoc_head_alloc(struct mdoc *mdoc, int pos, int tok, - size_t paramsz, const char **params) +static struct mdoc_node * +node_alloc(struct mdoc *m, int line, int pos, + enum mdoct tok, enum mdoc_type type) { struct mdoc_node *p; - assert(mdoc->first); - assert(mdoc->last); - assert(mdoc->last->type == MDOC_BLOCK); - assert(mdoc->last->data.block.tok == tok); + p = mandoc_calloc(1, sizeof(struct mdoc_node)); + p->sec = m->lastsec; + p->line = line; + p->pos = pos; + p->tok = tok; + p->type = type; - p = xcalloc(1, sizeof(struct mdoc_node)); - p->type = MDOC_HEAD; - p->data.head.tok = tok; - p->data.head.sz = paramsz; - p->data.head.args = paramdup(paramsz, params); + /* Flag analysis. */ - mdoc_node_append(mdoc, pos, p); + if (MDOC_SYNOPSIS & m->flags) + p->flags |= MDOC_SYNPRETTY; + else + p->flags &= ~MDOC_SYNPRETTY; + if (MDOC_NEWLINE & m->flags) + p->flags |= MDOC_LINE; + m->flags &= ~MDOC_NEWLINE; + + return(p); } -void -mdoc_body_alloc(struct mdoc *mdoc, int pos, int tok) +int +mdoc_tail_alloc(struct mdoc *m, int line, int pos, enum mdoct tok) { struct mdoc_node *p; - assert(mdoc->first); - assert(mdoc->last); - assert((mdoc->last->type == MDOC_BLOCK) || - (mdoc->last->type == MDOC_HEAD)); - if (mdoc->last->type == MDOC_BLOCK) - assert(mdoc->last->data.block.tok == tok); - else - assert(mdoc->last->data.head.tok == tok); + p = node_alloc(m, line, pos, tok, MDOC_TAIL); + if ( ! node_append(m, p)) + return(0); + m->next = MDOC_NEXT_CHILD; + return(1); +} - p = xcalloc(1, sizeof(struct mdoc_node)); - p->type = MDOC_BODY; - p->data.body.tok = tok; +int +mdoc_head_alloc(struct mdoc *m, int line, int pos, enum mdoct tok) +{ + struct mdoc_node *p; - mdoc_node_append(mdoc, pos, p); + assert(m->first); + assert(m->last); + + p = node_alloc(m, line, pos, tok, MDOC_HEAD); + if ( ! node_append(m, p)) + return(0); + m->next = MDOC_NEXT_CHILD; + return(1); } -void -mdoc_block_alloc(struct mdoc *mdoc, int pos, int tok, - size_t argsz, const struct mdoc_arg *args) +int +mdoc_body_alloc(struct mdoc *m, int line, int pos, enum mdoct tok) { struct mdoc_node *p; - p = xcalloc(1, sizeof(struct mdoc_node)); - - p->type = MDOC_BLOCK; - p->data.block.tok = tok; - p->data.block.argc = argsz; - p->data.block.argv = argdup(argsz, args); - - mdoc_node_append(mdoc, pos, p); + p = node_alloc(m, line, pos, tok, MDOC_BODY); + if ( ! node_append(m, p)) + return(0); + m->next = MDOC_NEXT_CHILD; + return(1); } -void -mdoc_elem_alloc(struct mdoc *mdoc, int pos, int tok, - size_t argsz, const struct mdoc_arg *args, - size_t paramsz, const char **params) +int +mdoc_endbody_alloc(struct mdoc *m, int line, int pos, enum mdoct tok, + struct mdoc_node *body, enum mdoc_endbody end) { struct mdoc_node *p; - p = xcalloc(1, sizeof(struct mdoc_node)); - p->type = MDOC_ELEM; - p->data.elem.tok = tok; - p->data.elem.sz = paramsz; - p->data.elem.args = paramdup(paramsz, params); - p->data.elem.argc = argsz; - p->data.elem.argv = argdup(argsz, args); - - mdoc_node_append(mdoc, pos, p); + p = node_alloc(m, line, pos, tok, MDOC_BODY); + p->pending = body; + p->end = end; + if ( ! node_append(m, p)) + return(0); + m->next = MDOC_NEXT_SIBLING; + return(1); } -void -mdoc_word_alloc(struct mdoc *mdoc, int pos, const char *word) +int +mdoc_block_alloc(struct mdoc *m, int line, int pos, + enum mdoct tok, struct mdoc_arg *args) { struct mdoc_node *p; - p = xcalloc(1, sizeof(struct mdoc_node)); - p->type = MDOC_TEXT; - p->data.text.string = xstrdup(word); + p = node_alloc(m, line, pos, tok, MDOC_BLOCK); + p->args = args; + if (p->args) + (args->refcnt)++; - mdoc_node_append(mdoc, pos, p); + switch (tok) { + case (MDOC_Bd): + /* FALLTHROUGH */ + case (MDOC_Bf): + /* FALLTHROUGH */ + case (MDOC_Bl): + /* FALLTHROUGH */ + case (MDOC_Rs): + p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); + break; + default: + break; + } + + if ( ! node_append(m, p)) + return(0); + m->next = MDOC_NEXT_CHILD; + return(1); } -static void -argfree(size_t sz, struct mdoc_arg *p) +int +mdoc_elem_alloc(struct mdoc *m, int line, int pos, + enum mdoct tok, struct mdoc_arg *args) { - int i, j; + struct mdoc_node *p; - if (0 == sz) - return; + p = node_alloc(m, line, pos, tok, MDOC_ELEM); + p->args = args; + if (p->args) + (args->refcnt)++; - assert(p); - /* LINTED */ - for (i = 0; i < (int)sz; i++) - if (p[i].sz > 0) { - assert(p[i].value); - /* LINTED */ - for (j = 0; j < (int)p[i].sz; j++) - free(p[i].value[j]); - } - free(p); + switch (tok) { + case (MDOC_An): + p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); + break; + default: + break; + } + + if ( ! node_append(m, p)) + return(0); + m->next = MDOC_NEXT_CHILD; + return(1); } - -static void -mdoc_elem_free(struct mdoc_elem *p) +int +mdoc_word_alloc(struct mdoc *m, int line, int pos, const char *p) { + struct mdoc_node *n; + size_t sv, len; - paramfree(p->sz, p->args); - argfree(p->argc, p->argv); -} + len = strlen(p); + n = node_alloc(m, line, pos, MDOC_MAX, MDOC_TEXT); + n->string = mandoc_malloc(len + 1); + sv = strlcpy(n->string, p, len + 1); -static void -mdoc_block_free(struct mdoc_block *p) -{ + /* Prohibit truncation. */ + assert(sv < len + 1); - argfree(p->argc, p->argv); + if ( ! node_append(m, n)) + return(0); + + m->next = MDOC_NEXT_SIBLING; + return(1); } static void -mdoc_text_free(struct mdoc_text *p) +mdoc_node_free(struct mdoc_node *p) { + if (MDOC_BLOCK == p->type || MDOC_ELEM == p->type) + free(p->norm); if (p->string) free(p->string); + if (p->args) + mdoc_argv_free(p->args); + free(p); } static void -mdoc_head_free(struct mdoc_head *p) +mdoc_node_unlink(struct mdoc *m, struct mdoc_node *n) { - paramfree(p->sz, p->args); -} + /* Adjust siblings. */ + if (n->prev) + n->prev->next = n->next; + if (n->next) + n->next->prev = n->prev; -void -mdoc_node_free(struct mdoc_node *p) -{ + /* Adjust parent. */ - switch (p->type) { - case (MDOC_TEXT): - mdoc_text_free(&p->data.text); - break; - case (MDOC_ELEM): - mdoc_elem_free(&p->data.elem); - break; - case (MDOC_BLOCK): - mdoc_block_free(&p->data.block); - break; - case (MDOC_HEAD): - mdoc_head_free(&p->data.head); - break; - default: - break; + if (n->parent) { + n->parent->nchild--; + if (n->parent->child == n) + n->parent->child = n->prev ? n->prev : n->next; + if (n->parent->last == n) + n->parent->last = n->prev ? n->prev : NULL; } - free(p); + /* Adjust parse point, if applicable. */ + + if (m && m->last == n) { + if (n->prev) { + m->last = n->prev; + m->next = MDOC_NEXT_SIBLING; + } else { + m->last = n->parent; + m->next = MDOC_NEXT_CHILD; + } + } + + if (m && m->first == n) + m->first = NULL; } -static void -mdoc_node_freelist(struct mdoc_node *p) +void +mdoc_node_delete(struct mdoc *m, struct mdoc_node *p) { - if (p->child) - mdoc_node_freelist(p->child); - if (p->next) - mdoc_node_freelist(p->next); + while (p->child) { + assert(p->nchild); + mdoc_node_delete(m, p->child); + } + assert(0 == p->nchild); + mdoc_node_unlink(m, p); mdoc_node_free(p); } - -int -mdoc_find(const struct mdoc *mdoc, const char *key) +#if 0 +/* + * Pre-treat a text line. + * Text lines can consist of equations, which must be handled apart from + * the regular text. + * Thus, use this function to step through a line checking if it has any + * equations embedded in it. + * This must handle multiple equations AND equations that do not end at + * the end-of-line, i.e., will re-enter in the next roff parse. + */ +static int +mdoc_preptext(struct mdoc *m, int line, char *buf, int offs) { + char *start, *end; + char delim; - return(mdoc_tokhash_find(mdoc->htab, key)); -} + while ('\0' != buf[offs]) { + /* Mark starting position if eqn is set. */ + start = NULL; + if ('\0' != (delim = roff_eqndelim(m->roff))) + if (NULL != (start = strchr(buf + offs, delim))) + *start++ = '\0'; + /* Parse text as normal. */ + if ( ! mdoc_ptext(m, line, buf, offs)) + return(0); -static void -argcpy(struct mdoc_arg *dst, const struct mdoc_arg *src) -{ - int i; + /* Continue only if an equation exists. */ + if (NULL == start) + break; - dst->arg = src->arg; - if (0 == (dst->sz = src->sz)) - return; - dst->value = xcalloc(dst->sz, sizeof(char *)); - for (i = 0; i < (int)dst->sz; i++) - dst->value[i] = xstrdup(src->value[i]); -} + /* Read past the end of the equation. */ + offs += start - (buf + offs); + assert(start == &buf[offs]); + if (NULL != (end = strchr(buf + offs, delim))) { + *end++ = '\0'; + while (' ' == *end) + end++; + } + /* Parse the equation itself. */ + roff_openeqn(m->roff, NULL, line, offs, buf); -static struct mdoc_arg * -argdup(size_t argsz, const struct mdoc_arg *args) + /* Process a finished equation? */ + if (roff_closeeqn(m->roff)) + if ( ! mdoc_addeqn(m, roff_eqn(m->roff))) + return(0); + offs += (end - (buf + offs)); + } + + return(1); +} +#endif + +/* + * Parse free-form text, that is, a line that does not begin with the + * control character. + */ +static int +mdoc_ptext(struct mdoc *m, int line, char *buf, int offs) { - struct mdoc_arg *pp; - int i; + char *c, *ws, *end; + struct mdoc_node *n; - if (0 == argsz) - return(NULL); + /* No text before an initial macro. */ - pp = xcalloc((size_t)argsz, sizeof(struct mdoc_arg)); - for (i = 0; i < (int)argsz; i++) - argcpy(&pp[i], &args[i]); + if (SEC_NONE == m->lastnamed) { + mdoc_pmsg(m, line, offs, MANDOCERR_NOTEXT); + return(1); + } - return(pp); + assert(m->last); + n = m->last; + + /* + * Divert directly to list processing if we're encountering a + * columnar MDOC_BLOCK with or without a prior MDOC_BLOCK entry + * (a MDOC_BODY means it's already open, in which case we should + * process within its context in the normal way). + */ + + if (MDOC_Bl == n->tok && MDOC_BODY == n->type && + LIST_column == n->norm->Bl.type) { + /* `Bl' is open without any children. */ + m->flags |= MDOC_FREECOL; + return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf)); + } + + if (MDOC_It == n->tok && MDOC_BLOCK == n->type && + NULL != n->parent && + MDOC_Bl == n->parent->tok && + LIST_column == n->parent->norm->Bl.type) { + /* `Bl' has block-level `It' children. */ + m->flags |= MDOC_FREECOL; + return(mdoc_macro(m, MDOC_It, line, offs, &offs, buf)); + } + + /* + * Search for the beginning of unescaped trailing whitespace (ws) + * and for the first character not to be output (end). + */ + + /* FIXME: replace with strcspn(). */ + ws = NULL; + for (c = end = buf + offs; *c; c++) { + switch (*c) { + case ' ': + if (NULL == ws) + ws = c; + continue; + case '\t': + /* + * Always warn about trailing tabs, + * even outside literal context, + * where they should be put on the next line. + */ + if (NULL == ws) + ws = c; + /* + * Strip trailing tabs in literal context only; + * outside, they affect the next line. + */ + if (MDOC_LITERAL & m->flags) + continue; + break; + case '\\': + /* Skip the escaped character, too, if any. */ + if (c[1]) + c++; + /* FALLTHROUGH */ + default: + ws = NULL; + break; + } + end = c + 1; + } + *end = '\0'; + + if (ws) + mdoc_pmsg(m, line, (int)(ws-buf), MANDOCERR_EOLNSPACE); + + if ('\0' == buf[offs] && ! (MDOC_LITERAL & m->flags)) { + mdoc_pmsg(m, line, (int)(c-buf), MANDOCERR_NOBLANKLN); + + /* + * Insert a `sp' in the case of a blank line. Technically, + * blank lines aren't allowed, but enough manuals assume this + * behaviour that we want to work around it. + */ + if ( ! mdoc_elem_alloc(m, line, offs, MDOC_sp, NULL)) + return(0); + + m->next = MDOC_NEXT_SIBLING; + return(1); + } + + if ( ! mdoc_word_alloc(m, line, offs, buf+offs)) + return(0); + + if (MDOC_LITERAL & m->flags) + return(1); + + /* + * End-of-sentence check. If the last character is an unescaped + * EOS character, then flag the node as being the end of a + * sentence. The front-end will know how to interpret this. + */ + + assert(buf < end); + + if (mandoc_eos(buf+offs, (size_t)(end-buf-offs), 0)) + m->last->flags |= MDOC_EOS; + + return(1); } -static void -paramfree(size_t sz, char **p) +/* + * Parse a macro line, that is, a line beginning with the control + * character. + */ +static int +mdoc_pmacro(struct mdoc *m, int ln, char *buf, int offs) { - int i; + enum mdoct tok; + int i, sv; + char mac[5]; + struct mdoc_node *n; - if (0 == sz) - return; + /* Empty post-control lines are ignored. */ - assert(p); - /* LINTED */ - for (i = 0; i < (int)sz; i++) - free(p[i]); - free(p); -} + if ('"' == buf[offs]) { + mdoc_pmsg(m, ln, offs, MANDOCERR_BADCOMMENT); + return(1); + } else if ('\0' == buf[offs]) + return(1); + sv = offs; -static char ** -paramdup(size_t sz, const char **p) + /* + * Copy the first word into a nil-terminated buffer. + * Stop copying when a tab, space, or eoln is encountered. + */ + + i = 0; + while (i < 4 && '\0' != buf[offs] && + ' ' != buf[offs] && '\t' != buf[offs]) + mac[i++] = buf[offs++]; + + mac[i] = '\0'; + + tok = (i > 1 || i < 4) ? mdoc_hash_find(mac) : MDOC_MAX; + + if (MDOC_MAX == tok) { + mandoc_vmsg(MANDOCERR_MACRO, m->parse, + ln, sv, "%s", buf + sv - 1); + return(1); + } + + /* Disregard the first trailing tab, if applicable. */ + + if ('\t' == buf[offs]) + offs++; + + /* Jump to the next non-whitespace word. */ + + while (buf[offs] && ' ' == buf[offs]) + offs++; + + /* + * Trailing whitespace. Note that tabs are allowed to be passed + * into the parser as "text", so we only warn about spaces here. + */ + + if ('\0' == buf[offs] && ' ' == buf[offs - 1]) + mdoc_pmsg(m, ln, offs - 1, MANDOCERR_EOLNSPACE); + + /* + * If an initial macro or a list invocation, divert directly + * into macro processing. + */ + + if (NULL == m->last || MDOC_It == tok || MDOC_El == tok) { + if ( ! mdoc_macro(m, tok, ln, sv, &offs, buf)) + goto err; + return(1); + } + + n = m->last; + assert(m->last); + + /* + * If the first macro of a `Bl -column', open an `It' block + * context around the parsed macro. + */ + + if (MDOC_Bl == n->tok && MDOC_BODY == n->type && + LIST_column == n->norm->Bl.type) { + m->flags |= MDOC_FREECOL; + if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf)) + goto err; + return(1); + } + + /* + * If we're following a block-level `It' within a `Bl -column' + * context (perhaps opened in the above block or in ptext()), + * then open an `It' block context around the parsed macro. + */ + + if (MDOC_It == n->tok && MDOC_BLOCK == n->type && + NULL != n->parent && + MDOC_Bl == n->parent->tok && + LIST_column == n->parent->norm->Bl.type) { + m->flags |= MDOC_FREECOL; + if ( ! mdoc_macro(m, MDOC_It, ln, sv, &sv, buf)) + goto err; + return(1); + } + + /* Normal processing of a macro. */ + + if ( ! mdoc_macro(m, tok, ln, sv, &offs, buf)) + goto err; + + return(1); + +err: /* Error out. */ + + m->flags |= MDOC_HALT; + return(0); +} + +enum mdelim +mdoc_isdelim(const char *p) { - char **pp; - int i; - if (0 == sz) - return(NULL); + if ('\0' == p[0]) + return(DELIM_NONE); - pp = xcalloc(sz, sizeof(char *)); - for (i = 0; i < (int)sz; i++) - pp[i] = xstrdup(p[i]); + if ('\0' == p[1]) + switch (p[0]) { + case('('): + /* FALLTHROUGH */ + case('['): + return(DELIM_OPEN); + case('|'): + return(DELIM_MIDDLE); + case('.'): + /* FALLTHROUGH */ + case(','): + /* FALLTHROUGH */ + case(';'): + /* FALLTHROUGH */ + case(':'): + /* FALLTHROUGH */ + case('?'): + /* FALLTHROUGH */ + case('!'): + /* FALLTHROUGH */ + case(')'): + /* FALLTHROUGH */ + case(']'): + return(DELIM_CLOSE); + default: + return(DELIM_NONE); + } - return(pp); + if ('\\' != p[0]) + return(DELIM_NONE); + + if (0 == strcmp(p + 1, ".")) + return(DELIM_CLOSE); + if (0 == strcmp(p + 1, "*(Ba")) + return(DELIM_MIDDLE); + + return(DELIM_NONE); }