=================================================================== RCS file: /cvs/mandoc/mdoc.c,v retrieving revision 1.80 retrieving revision 1.258 diff -u -p -r1.80 -r1.258 --- mandoc/mdoc.c 2009/06/15 10:36:01 1.80 +++ mandoc/mdoc.c 2017/01/10 13:47:00 1.258 @@ -1,40 +1,43 @@ -/* $Id: mdoc.c,v 1.80 2009/06/15 10:36:01 kristaps Exp $ */ +/* $Id: mdoc.c,v 1.258 2017/01/10 13:47:00 schwarze Exp $ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons + * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons + * Copyright (c) 2010, 2012-2016 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. * - * 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. */ +#include "config.h" + +#include + #include #include #include #include #include #include +#include +#include "mandoc_aux.h" +#include "mandoc.h" +#include "roff.h" +#include "mdoc.h" +#include "libmandoc.h" +#include "roff_int.h" #include "libmdoc.h" -enum merr { - ENOCALL, - EBODYPROL, - EPROLBODY, - ESPACE, - ETEXTPROL, - ENOBLANK, - EMALLOC -}; - -const char *const __mdoc_macronames[MDOC_MAX] = { - "\\\"", "Dd", "Dt", "Os", +const char *const __mdoc_macronames[MDOC_MAX + 1] = { + "text", + "Ap", "Dd", "Dt", "Os", "Sh", "Ss", "Pp", "D1", "Dl", "Bd", "Ed", "Bl", "El", "It", "Ad", "An", @@ -44,12 +47,9 @@ const char *const __mdoc_macronames[MDOC_MAX] = { "Ic", "In", "Li", "Nd", "Nm", "Op", "Ot", "Pa", "Rv", "St", "Va", "Vt", - /* LINTED */ - "Xr", "\%A", "\%B", "\%D", - /* LINTED */ - "\%I", "\%J", "\%N", "\%O", - /* LINTED */ - "\%P", "\%R", "\%T", "\%V", + "Xr", "%A", "%B", "%D", + "%I", "%J", "%N", "%O", + "%P", "%R", "%T", "%V", "Ac", "Ao", "Aq", "At", "Bc", "Bf", "Bo", "Bq", "Bsx", "Bx", "Db", "Dc", @@ -63,655 +63,404 @@ const char *const __mdoc_macronames[MDOC_MAX] = { "Tn", "Ux", "Xc", "Xo", "Fo", "Fc", "Oo", "Oc", "Bk", "Ek", "Bt", "Hf", - "Fr", "Ud", "Lb", "Ap", - "Lp", "Lk", "Mt", "Brq", - /* LINTED */ - "Bro", "Brc", "\%C", "Es", - /* LINTED */ - "En", "Dx", "\%Q" - }; + "Fr", "Ud", "Lb", "Lp", + "Lk", "Mt", "Brq", "Bro", + "Brc", "%C", "Es", "En", + "Dx", "%Q", "br", "sp", + "%U", "Ta", "ll", +}; -const char *const __mdoc_argnames[MDOC_ARG_MAX] = { +const char *const __mdoc_argnames[MDOC_ARG_MAX] = { "split", "nosplit", "ragged", - "unfilled", "literal", "file", - "offset", "bullet", "dash", - "hyphen", "item", "enum", - "tag", "diag", "hang", - "ohang", "inset", "column", - "width", "compact", "std", + "unfilled", "literal", "file", + "offset", "bullet", "dash", + "hyphen", "item", "enum", + "tag", "diag", "hang", + "ohang", "inset", "column", + "width", "compact", "std", "filled", "words", "emphasis", - "symbolic", "nested" + "symbolic", "nested", "centered" }; -const char * const *mdoc_macronames = __mdoc_macronames; +const char * const *mdoc_macronames = __mdoc_macronames + 1; const char * const *mdoc_argnames = __mdoc_argnames; -static void mdoc_free1(struct mdoc *); -static int mdoc_alloc1(struct mdoc *); -static struct mdoc_node *node_alloc(struct mdoc *, int, int, - int, enum mdoc_type); -static int node_append(struct mdoc *, - struct mdoc_node *); -static int parsetext(struct mdoc *, int, char *); -static int parsemacro(struct mdoc *, int, char *); -static int macrowarn(struct mdoc *, int, const char *); -static int perr(struct mdoc *, int, int, enum merr); +static int mdoc_ptext(struct roff_man *, int, char *, int); +static int mdoc_pmacro(struct roff_man *, int, char *, int); -#define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t)) /* - * Get the first (root) node of the parse tree. + * Main parse routine. Parses a single line -- really just hands off to + * the macro (mdoc_pmacro()) or text parser (mdoc_ptext()). */ -const struct mdoc_node * -mdoc_node(const struct mdoc *m) +int +mdoc_parseln(struct roff_man *mdoc, int ln, char *buf, int offs) { - return(MDOC_HALT & m->flags ? NULL : m->first); -} + if (mdoc->last->type != ROFFT_EQN || ln > mdoc->last->line) + mdoc->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_getreg(mdoc->roff, "nS")) + mdoc->flags |= MDOC_SYNOPSIS; + else + mdoc->flags &= ~MDOC_SYNOPSIS; -const struct mdoc_meta * -mdoc_meta(const struct mdoc *m) -{ - - return(MDOC_HALT & m->flags ? NULL : &m->meta); + return roff_getcontrol(mdoc->roff, buf, &offs) ? + mdoc_pmacro(mdoc, ln, buf, offs) : + mdoc_ptext(mdoc, ln, buf, offs); } - -static void -mdoc_free1(struct mdoc *mdoc) +void +mdoc_macro(MACRO_PROT_ARGS) { + assert(tok > TOKEN_NONE && tok < MDOC_MAX); - if (mdoc->first) - mdoc_node_freelist(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); + (*mdoc_macros[tok].fp)(mdoc, tok, line, ppos, pos, buf); } - -static int -mdoc_alloc1(struct mdoc *mdoc) +void +mdoc_tail_alloc(struct roff_man *mdoc, int line, int pos, int tok) { + struct roff_node *p; - bzero(&mdoc->meta, sizeof(struct mdoc_meta)); - mdoc->flags = 0; - mdoc->lastnamed = mdoc->lastsec = 0; - mdoc->last = calloc(1, sizeof(struct mdoc_node)); - if (NULL == mdoc->last) - return(0); - - mdoc->first = mdoc->last; - mdoc->last->type = MDOC_ROOT; - mdoc->next = MDOC_NEXT_CHILD; - return(1); + p = roff_node_alloc(mdoc, line, pos, ROFFT_TAIL, tok); + roff_node_append(mdoc, p); + mdoc->next = ROFF_NEXT_CHILD; } - -/* - * Free up all resources contributed by a parse: the node tree, - * meta-data and so on. Then reallocate the root node for another - * parse. - */ -int -mdoc_reset(struct mdoc *mdoc) +struct roff_node * +mdoc_endbody_alloc(struct roff_man *mdoc, int line, int pos, int tok, + struct roff_node *body, enum mdoc_endbody end) { + struct roff_node *p; - mdoc_free1(mdoc); - return(mdoc_alloc1(mdoc)); + body->flags |= NODE_ENDED; + body->parent->flags |= NODE_ENDED; + p = roff_node_alloc(mdoc, line, pos, ROFFT_BODY, tok); + p->body = body; + p->norm = body->norm; + p->end = end; + roff_node_append(mdoc, p); + mdoc->next = ROFF_NEXT_SIBLING; + return p; } - -/* - * Completely free up all resources. - */ -void -mdoc_free(struct mdoc *mdoc) +struct roff_node * +mdoc_block_alloc(struct roff_man *mdoc, int line, int pos, + int tok, struct mdoc_arg *args) { + struct roff_node *p; - mdoc_free1(mdoc); - if (mdoc->htab) - mdoc_hash_free(mdoc->htab); - free(mdoc); + p = roff_node_alloc(mdoc, line, pos, ROFFT_BLOCK, tok); + p->args = args; + if (p->args) + (args->refcnt)++; + + switch (tok) { + case MDOC_Bd: + case MDOC_Bf: + case MDOC_Bl: + case MDOC_En: + case MDOC_Rs: + p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); + break; + default: + break; + } + roff_node_append(mdoc, p); + mdoc->next = ROFF_NEXT_CHILD; + return p; } - -struct mdoc * -mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb) +void +mdoc_elem_alloc(struct roff_man *mdoc, int line, int pos, + int tok, struct mdoc_arg *args) { - struct mdoc *p; + struct roff_node *p; - if (NULL == (p = calloc(1, sizeof(struct mdoc)))) - return(NULL); - if (cb) - (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb)); + p = roff_node_alloc(mdoc, line, pos, ROFFT_ELEM, tok); + p->args = args; + if (p->args) + (args->refcnt)++; - p->data = data; - p->pflags = pflags; - - if (NULL == (p->htab = mdoc_hash_alloc())) { - free(p); - return(NULL); - } else if (mdoc_alloc1(p)) - return(p); - - free(p); - return(NULL); + switch (tok) { + case MDOC_An: + p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); + break; + default: + break; + } + roff_node_append(mdoc, p); + mdoc->next = ROFF_NEXT_CHILD; } - -/* - * Climb back up the parse tree, validating open scopes. Mostly calls - * through to macro_end in macro.c. - */ -int -mdoc_endparse(struct mdoc *m) +void +mdoc_node_relink(struct roff_man *mdoc, struct roff_node *p) { - if (MDOC_HALT & m->flags) - return(0); - else if (mdoc_macroend(m)) - return(1); - m->flags |= MDOC_HALT; - return(0); + roff_node_unlink(mdoc, p); + p->prev = p->next = NULL; + roff_node_append(mdoc, p); } - /* - * Main parse routine. Parses a single line -- really just hands off to - * the macro or text parser. + * Parse free-form text, that is, a line that does not begin with the + * control character. */ -int -mdoc_parseln(struct mdoc *m, int ln, char *buf) +static int +mdoc_ptext(struct roff_man *mdoc, int line, char *buf, int offs) { + struct roff_node *n; + char *c, *ws, *end; - /* If in error-mode, then we parse no more. */ + n = mdoc->last; - if (MDOC_HALT & m->flags) - return(0); + /* + * If a column list contains plain text, assume an implicit item + * macro. This can happen one or more times at the beginning + * of such a list, intermixed with non-It mdoc macros and with + * nodes generated on the roff level, for example by tbl. + */ - return('.' == *buf ? parsemacro(m, ln, buf) : - parsetext(m, ln, buf)); -} + if ((n->tok == MDOC_Bl && n->type == ROFFT_BODY && + n->end == ENDBODY_NOT && n->norm->Bl.type == LIST_column) || + (n->parent != NULL && n->parent->tok == MDOC_Bl && + n->parent->norm->Bl.type == LIST_column)) { + mdoc->flags |= MDOC_FREECOL; + mdoc_macro(mdoc, MDOC_It, line, offs, &offs, buf); + return 1; + } + /* + * Search for the beginning of unescaped trailing whitespace (ws) + * and for the first character not to be output (end). + */ -int -mdoc_verr(struct mdoc *mdoc, int ln, int pos, - const char *fmt, ...) -{ - char buf[256]; - va_list ap; + /* 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 & mdoc->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 (NULL == mdoc->cb.mdoc_err) - return(0); + if (ws) + mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse, + line, (int)(ws-buf), NULL); - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf)); -} + if (buf[offs] == '\0' && ! (mdoc->flags & MDOC_LITERAL)) { + mandoc_msg(MANDOCERR_FI_BLANK, mdoc->parse, + line, (int)(c - buf), NULL); + /* + * 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. + */ + roff_elem_alloc(mdoc, line, offs, MDOC_sp); + mdoc->last->flags |= NODE_VALID | NODE_ENDED; + mdoc->next = ROFF_NEXT_SIBLING; + return 1; + } -int -mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, - enum mdoc_warn type, const char *fmt, ...) -{ - char buf[256]; - va_list ap; + roff_word_alloc(mdoc, line, offs, buf+offs); - if (NULL == mdoc->cb.mdoc_warn) - return(0); + if (mdoc->flags & MDOC_LITERAL) + return 1; - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf)); -} + /* + * 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); -int -mdoc_nerr(struct mdoc *mdoc, const struct mdoc_node *node, const char *fmt, ...) -{ - char buf[256]; - va_list ap; - - if (NULL == mdoc->cb.mdoc_err) - return(0); - - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - return((*mdoc->cb.mdoc_err)(mdoc->data, node->line, node->pos, buf)); + if (mandoc_eos(buf+offs, (size_t)(end-buf-offs))) + mdoc->last->flags |= NODE_EOS; + return 1; } - -int -mdoc_warn(struct mdoc *mdoc, enum mdoc_warn type, const char *fmt, ...) +/* + * Parse a macro line, that is, a line beginning with the control + * character. + */ +static int +mdoc_pmacro(struct roff_man *mdoc, int ln, char *buf, int offs) { - char buf[256]; - va_list ap; + struct roff_node *n; + const char *cp; + int tok; + int i, sv; + char mac[5]; - if (NULL == mdoc->cb.mdoc_warn) - return(0); + sv = offs; - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - return((*mdoc->cb.mdoc_warn)(mdoc->data, mdoc->last->line, - mdoc->last->pos, type, buf)); -} + /* + * Copy the first word into a nil-terminated buffer. + * Stop when a space, tab, escape, or eoln is encountered. + */ + i = 0; + while (i < 4 && strchr(" \t\\", buf[offs]) == NULL) + mac[i++] = buf[offs++]; -int -mdoc_err(struct mdoc *mdoc, const char *fmt, ...) -{ - char buf[256]; - va_list ap; + mac[i] = '\0'; - if (NULL == mdoc->cb.mdoc_err) - return(0); + tok = (i > 1 && i < 4) ? mdoc_hash_find(mac) : TOKEN_NONE; - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - return((*mdoc->cb.mdoc_err)(mdoc->data, mdoc->last->line, - mdoc->last->pos, buf)); -} - - -int -mdoc_pwarn(struct mdoc *mdoc, int line, int pos, enum mdoc_warn type, - const char *fmt, ...) -{ - char buf[256]; - va_list ap; - - if (NULL == mdoc->cb.mdoc_warn) - return(0); - - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - return((*mdoc->cb.mdoc_warn)(mdoc->data, line, pos, type, buf)); -} - -int -mdoc_perr(struct mdoc *mdoc, int line, int pos, const char *fmt, ...) -{ - char buf[256]; - va_list ap; - - if (NULL == mdoc->cb.mdoc_err) - return(0); - - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - return((*mdoc->cb.mdoc_err)(mdoc->data, line, pos, buf)); -} - - -int -mdoc_macro(struct mdoc *m, int tok, - int ln, int pp, int *pos, char *buf) -{ - - /* FIXME - these should happen during validation. */ - - if (MDOC_PROLOGUE & mdoc_macros[tok].flags && - SEC_PROLOGUE != m->lastnamed) - return(perr(m, ln, pp, EPROLBODY)); - - if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) && - SEC_PROLOGUE == m->lastnamed) - return(perr(m, ln, pp, EBODYPROL)); - - if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) - return(perr(m, ln, pp, ENOCALL)); - - return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf)); -} - - -static int -perr(struct mdoc *m, int line, int pos, enum merr type) -{ - char *p; - - p = NULL; - switch (type) { - case (ENOCALL): - p = "not callable"; - break; - case (EPROLBODY): - p = "macro disallowed in document body"; - break; - case (EBODYPROL): - p = "macro disallowed in document prologue"; - break; - case (EMALLOC): - p = "memory exhausted"; - break; - case (ETEXTPROL): - p = "text disallowed in document prologue"; - break; - case (ENOBLANK): - p = "blank lines disallowed in non-literal contexts"; - break; - case (ESPACE): - p = "whitespace disallowed after delimiter"; - break; + if (tok == TOKEN_NONE) { + mandoc_msg(MANDOCERR_MACRO, mdoc->parse, + ln, sv, buf + sv - 1); + return 1; } - assert(p); - return(mdoc_perr(m, line, pos, p)); -} + /* Skip a leading escape sequence or tab. */ -static int -node_append(struct mdoc *mdoc, struct mdoc_node *p) -{ - - 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; + switch (buf[offs]) { + case '\\': + cp = buf + offs + 1; + mandoc_escape(&cp, NULL, NULL); + offs = cp - buf; break; - case (MDOC_NEXT_CHILD): - mdoc->last->child = p; - p->parent = mdoc->last; + case '\t': + offs++; break; default: - abort(); - /* NOTREACHED */ - } - - if ( ! mdoc_valid_pre(mdoc, p)) - return(0); - if ( ! mdoc_action_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): - assert(MDOC_BLOCK == p->parent->type); - p->parent->body = p; - break; - default: - break; } - mdoc->last = p; + /* Jump to the next non-whitespace word. */ - switch (p->type) { - case (MDOC_TEXT): - if ( ! mdoc_valid_post(mdoc)) - return(0); - if ( ! mdoc_action_post(mdoc)) - return(0); - break; - default: - break; - } + while (buf[offs] && ' ' == buf[offs]) + offs++; - return(1); -} + /* + * 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]) + mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse, + ln, offs - 1, NULL); -static struct mdoc_node * -node_alloc(struct mdoc *mdoc, int line, - int pos, int tok, enum mdoc_type type) -{ - struct mdoc_node *p; + /* + * If an initial macro or a list invocation, divert directly + * into macro processing. + */ - if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) { - (void)verr(mdoc, EMALLOC); - return(NULL); + n = mdoc->last; + if (n == NULL || tok == MDOC_It || tok == MDOC_El) { + mdoc_macro(mdoc, tok, ln, sv, &offs, buf); + return 1; } - p->sec = mdoc->lastsec; - p->line = line; - p->pos = pos; - p->tok = tok; - if (MDOC_TEXT != (p->type = type)) - assert(p->tok >= 0); + /* + * If a column list contains a non-It macro, assume an implicit + * item macro. This can happen one or more times at the + * beginning of such a list, intermixed with text lines and + * with nodes generated on the roff level, for example by tbl. + */ - return(p); -} + if ((n->tok == MDOC_Bl && n->type == ROFFT_BODY && + n->end == ENDBODY_NOT && n->norm->Bl.type == LIST_column) || + (n->parent != NULL && n->parent->tok == MDOC_Bl && + n->parent->norm->Bl.type == LIST_column)) { + mdoc->flags |= MDOC_FREECOL; + mdoc_macro(mdoc, MDOC_It, ln, sv, &sv, buf); + return 1; + } + /* Normal processing of a macro. */ -int -mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok) -{ - struct mdoc_node *p; + mdoc_macro(mdoc, tok, ln, sv, &offs, buf); - p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL); - if (NULL == p) - return(0); - return(node_append(mdoc, p)); -} + /* In quick mode (for mandocdb), abort after the NAME section. */ + if (mdoc->quick && MDOC_Sh == tok && + SEC_NAME != mdoc->last->sec) + return 2; -int -mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok) -{ - struct mdoc_node *p; - - assert(mdoc->first); - assert(mdoc->last); - - p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD); - if (NULL == p) - return(0); - return(node_append(mdoc, p)); + return 1; } - -int -mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok) +enum mdelim +mdoc_isdelim(const char *p) { - struct mdoc_node *p; - p = node_alloc(mdoc, line, pos, tok, MDOC_BODY); - if (NULL == p) - return(0); - return(node_append(mdoc, p)); -} + if ('\0' == p[0]) + return DELIM_NONE; + if ('\0' == p[1]) + switch (p[0]) { + case '(': + case '[': + return DELIM_OPEN; + case '|': + return DELIM_MIDDLE; + case '.': + case ',': + case ';': + case ':': + case '?': + case '!': + case ')': + case ']': + return DELIM_CLOSE; + default: + return DELIM_NONE; + } -int -mdoc_block_alloc(struct mdoc *mdoc, int line, int pos, - int tok, struct mdoc_arg *args) -{ - struct mdoc_node *p; + if ('\\' != p[0]) + return DELIM_NONE; - p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK); - if (NULL == p) - return(0); - p->args = args; - if (p->args) - (args->refcnt)++; - return(node_append(mdoc, p)); -} + if (0 == strcmp(p + 1, ".")) + return DELIM_CLOSE; + if (0 == strcmp(p + 1, "fR|\\fP")) + return DELIM_MIDDLE; - -int -mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos, - int tok, struct mdoc_arg *args) -{ - struct mdoc_node *p; - - p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM); - if (NULL == p) - return(0); - p->args = args; - if (p->args) - (args->refcnt)++; - return(node_append(mdoc, p)); + return DELIM_NONE; } - -int -mdoc_word_alloc(struct mdoc *mdoc, - int line, int pos, const char *word) -{ - struct mdoc_node *p; - - p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT); - if (NULL == p) - return(0); - if (NULL == (p->string = strdup(word))) { - (void)verr(mdoc, EMALLOC); - return(0); - } - return(node_append(mdoc, p)); -} - - void -mdoc_node_free(struct mdoc_node *p) +mdoc_validate(struct roff_man *mdoc) { - if (p->string) - free(p->string); - if (p->args) - mdoc_argv_free(p->args); - free(p); -} - - -void -mdoc_node_freelist(struct mdoc_node *p) -{ - - if (p->child) - mdoc_node_freelist(p->child); - if (p->next) - mdoc_node_freelist(p->next); - - mdoc_node_free(p); -} - - -/* - * Parse free-form text, that is, a line that does not begin with the - * control character. - */ -static int -parsetext(struct mdoc *m, int line, char *buf) -{ - - if (SEC_PROLOGUE == m->lastnamed) - return(perr(m, line, 0, ETEXTPROL)); - - if (0 == buf[0] && ! (MDOC_LITERAL & m->flags)) - return(perr(m, line, 0, ENOBLANK)); - - if ( ! mdoc_word_alloc(m, line, 0, buf)) - return(0); - - m->next = MDOC_NEXT_SIBLING; - return(1); -} - - -static int -macrowarn(struct mdoc *m, int ln, const char *buf) -{ - if ( ! (MDOC_IGN_MACRO & m->pflags)) - return(mdoc_perr(m, ln, 1, - "unknown macro: %s%s", - buf, strlen(buf) > 3 ? "..." : "")); - return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX, - "unknown macro: %s%s", - buf, strlen(buf) > 3 ? "..." : "")); -} - - - -/* - * Parse a macro line, that is, a line beginning with the control - * character. - */ -int -parsemacro(struct mdoc *m, int ln, char *buf) -{ - int i, c; - char mac[5]; - - /* Comments and empties are quickly ignored. */ - - if (0 == buf[1]) - return(1); - - if (' ' == buf[1]) { - i = 2; - while (buf[i] && ' ' == buf[i]) - i++; - if (0 == buf[i]) - return(1); - return(perr(m, ln, 1, ESPACE)); - } - - if (buf[1] && '\\' == buf[1]) - if (buf[2] && '\"' == buf[2]) - return(1); - - /* Copy the first word into a nil-terminated buffer. */ - - for (i = 1; i < 5; i++) { - if (0 == (mac[i - 1] = buf[i])) - break; - else if (' ' == buf[i]) - break; - } - - mac[i - 1] = 0; - - if (i == 5 || i <= 2) { - if ( ! macrowarn(m, ln, mac)) - goto err; - return(1); - } - - if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) { - if ( ! macrowarn(m, ln, mac)) - goto err; - return(1); - } - - /* The macro is sane. Jump to the next word. */ - - while (buf[i] && ' ' == buf[i]) - i++; - - /* Begin recursive parse sequence. */ - - if ( ! mdoc_macro(m, c, ln, 1, &i, buf)) - goto err; - - return(1); - -err: /* Error out. */ - - m->flags |= MDOC_HALT; - return(0); + mdoc->last = mdoc->first; + mdoc_node_validate(mdoc); + mdoc_state_reset(mdoc); }