=================================================================== RCS file: /cvs/mandoc/mdoc.c,v retrieving revision 1.59 retrieving revision 1.263 diff -u -p -r1.59 -r1.263 --- mandoc/mdoc.c 2009/03/09 13:35:09 1.59 +++ mandoc/mdoc.c 2017/04/29 12:45:41 1.263 @@ -1,569 +1,437 @@ -/* $Id: mdoc.c,v 1.59 2009/03/09 13:35:09 kristaps Exp $ */ +/* $Id: mdoc.c,v 1.263 2017/04/29 12:45:41 schwarze Exp $ */ /* - * Copyright (c) 2008 Kristaps Dzonsons + * Copyright (c) 2008, 2009, 2010, 2011 Kristaps Dzonsons + * Copyright (c) 2010, 2012-2017 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 AUTHORS DISCLAIM ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#include "config.h" + +#include + #include #include -#include #include -#include #include +#include #include +#include -#include "private.h" +#include "mandoc_aux.h" +#include "mandoc.h" +#include "roff.h" +#include "mdoc.h" +#include "libmandoc.h" +#include "roff_int.h" +#include "libmdoc.h" -/* - * Main caller in the libmdoc library. This begins the parsing routine, - * handles allocation of data, and so forth. Most of the "work" is done - * in macro.c and validate.c. - */ - -static struct mdoc_node *mdoc_node_alloc(const struct mdoc *); -static int mdoc_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 *); - - -const char *const __mdoc_macronames[MDOC_MAX] = { - "\\\"", "Dd", "Dt", "Os", - "Sh", "Ss", "Pp", "D1", - "Dl", "Bd", "Ed", "Bl", - "El", "It", "Ad", "An", - "Ar", "Cd", "Cm", "Dv", - "Er", "Ev", "Ex", "Fa", - "Fd", "Fl", "Fn", "Ft", - "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", - "Ac", "Ao", "Aq", "At", - "Bc", "Bf", "Bo", "Bq", - "Bsx", "Bx", "Db", "Dc", - "Do", "Dq", "Ec", "Ef", - "Em", "Eo", "Fx", "Ms", - "No", "Ns", "Nx", "Ox", - "Pc", "Pf", "Po", "Pq", - "Qc", "Ql", "Qo", "Qq", - "Re", "Rs", "Sc", "So", - "Sq", "Sm", "Sx", "Sy", - "Tn", "Ux", "Xc", "Xo", - "Fo", "Fc", "Oo", "Oc", - "Bk", "Ek", "Bt", "Hf", - "Fr", "Ud", "Lb", "Ap", - "Lp" - }; - -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" - }; - -const char * const *mdoc_macronames = __mdoc_macronames; + "symbolic", "nested", "centered" +}; const char * const *mdoc_argnames = __mdoc_argnames; +static int mdoc_ptext(struct roff_man *, int, char *, int); +static int mdoc_pmacro(struct roff_man *, int, char *, int); -const struct mdoc_node * -mdoc_node(const struct mdoc *mdoc) -{ - return(mdoc->first); -} - - -const struct mdoc_meta * -mdoc_meta(const struct mdoc *mdoc) -{ - - return(&mdoc->meta); -} - - -void -mdoc_free(struct mdoc *mdoc) -{ - - if (mdoc->first) - mdoc_node_freelist(mdoc->first); - if (mdoc->htab) - mdoc_tokhash_free(mdoc->htab); - 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); - - free(mdoc); -} - - -struct mdoc * -mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb) -{ - struct mdoc *p; - - p = xcalloc(1, sizeof(struct mdoc)); - - p->data = data; - if (cb) - (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb)); - - p->last = xcalloc(1, sizeof(struct mdoc_node)); - p->last->type = MDOC_ROOT; - p->first = p->last; - p->pflags = pflags; - p->next = MDOC_NEXT_CHILD; - p->htab = mdoc_tokhash_alloc(); - - return(p); -} - - -int -mdoc_endparse(struct mdoc *mdoc) -{ - - if (MDOC_HALT & mdoc->flags) - return(0); - if (NULL == mdoc->first) - return(1); - - assert(mdoc->last); - if ( ! macro_end(mdoc)) { - mdoc->flags |= MDOC_HALT; - return(0); - } - return(1); -} - - /* * Main parse routine. Parses a single line -- really just hands off to - * the macro or text parser. + * the macro (mdoc_pmacro()) or text parser (mdoc_ptext()). */ int -mdoc_parseln(struct mdoc *m, int ln, char *buf) +mdoc_parseln(struct roff_man *mdoc, int ln, char *buf, int offs) { - /* If in error-mode, then we parse no more. */ + if (mdoc->last->type != ROFFT_EQN || ln > mdoc->last->line) + mdoc->flags |= MDOC_NEWLINE; - if (MDOC_HALT & m->flags) - return(0); + /* + * 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; - return('.' == *buf ? parsemacro(m, ln, buf) : - parsetext(m, ln, buf)); + return roff_getcontrol(mdoc->roff, buf, &offs) ? + mdoc_pmacro(mdoc, ln, buf, offs) : + mdoc_ptext(mdoc, ln, buf, offs); } - void -mdoc_vmsg(struct mdoc *mdoc, int ln, int pos, const char *fmt, ...) +mdoc_macro(MACRO_PROT_ARGS) { - char buf[256]; - va_list ap; - - if (NULL == mdoc->cb.mdoc_msg) - return; - - va_start(ap, fmt); - (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap); - va_end(ap); - (*mdoc->cb.mdoc_msg)(mdoc->data, ln, pos, buf); + assert(tok >= MDOC_Dd && tok < MDOC_MAX); + (*mdoc_macros[tok].fp)(mdoc, tok, line, ppos, pos, buf); } - -int -mdoc_verr(struct mdoc *mdoc, int ln, int pos, - const char *fmt, ...) +void +mdoc_tail_alloc(struct roff_man *mdoc, int line, int pos, enum roff_tok tok) { - char buf[256]; - va_list ap; + struct roff_node *p; - 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, ln, pos, buf)); + p = roff_node_alloc(mdoc, line, pos, ROFFT_TAIL, tok); + roff_node_append(mdoc, p); + mdoc->next = ROFF_NEXT_CHILD; } - -int -mdoc_vwarn(struct mdoc *mdoc, int ln, int pos, - enum mdoc_warn type, const char *fmt, ...) +struct roff_node * +mdoc_endbody_alloc(struct roff_man *mdoc, int line, int pos, + enum roff_tok tok, struct roff_node *body) { - char buf[256]; - va_list ap; + struct roff_node *p; - 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, ln, pos, type, buf)); + 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 = ENDBODY_SPACE; + roff_node_append(mdoc, p); + mdoc->next = ROFF_NEXT_SIBLING; + return p; } - -int -mdoc_macro(struct mdoc *m, int tok, - int ln, int pp, int *pos, char *buf) +struct roff_node * +mdoc_block_alloc(struct roff_man *mdoc, int line, int pos, + enum roff_tok tok, struct mdoc_arg *args) { + struct roff_node *p; - /* FIXME - these should happen during validation. */ + p = roff_node_alloc(mdoc, line, pos, ROFFT_BLOCK, tok); + p->args = args; + if (p->args) + (args->refcnt)++; - if (MDOC_PROLOGUE & mdoc_macros[tok].flags && - SEC_PROLOGUE != m->lastnamed) - return(mdoc_perr(m, ln, pp, - "disallowed in document body")); - - if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) && - SEC_PROLOGUE == m->lastnamed) - return(mdoc_perr(m, ln, pp, - "disallowed in prologue")); - - if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags)) - return(mdoc_perr(m, ln, pp, "not callable")); - - return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf)); + 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; } - -static int -mdoc_node_append(struct mdoc *mdoc, struct mdoc_node *p) +void +mdoc_elem_alloc(struct roff_man *mdoc, int line, int pos, + enum roff_tok tok, struct mdoc_arg *args) { + struct roff_node *p; - assert(mdoc->last); - assert(mdoc->first); - assert(MDOC_ROOT != p->type); + p = roff_node_alloc(mdoc, line, pos, ROFFT_ELEM, tok); + p->args = args; + if (p->args) + (args->refcnt)++; - switch (mdoc->next) { - case (MDOC_NEXT_SIBLING): - mdoc->last->next = p; - p->prev = mdoc->last; - p->parent = mdoc->last->parent; + switch (tok) { + case MDOC_An: + p->norm = mandoc_calloc(1, sizeof(union mdoc_data)); break; - case (MDOC_NEXT_CHILD): - mdoc->last->child = p; - p->parent = mdoc->last; - break; default: - abort(); - /* NOTREACHED */ - } - - 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): - assert(MDOC_BLOCK == p->parent->type); - p->parent->body = p; - break; - default: - break; } - - mdoc->last = p; - return(1); + roff_node_append(mdoc, p); + mdoc->next = ROFF_NEXT_CHILD; } - -static struct mdoc_node * -mdoc_node_alloc(const struct mdoc *mdoc) +void +mdoc_node_relink(struct roff_man *mdoc, struct roff_node *p) { - struct mdoc_node *p; - p = xcalloc(1, sizeof(struct mdoc_node)); - p->sec = mdoc->lastsec; - - return(p); + roff_node_unlink(mdoc, p); + p->prev = p->next = NULL; + roff_node_append(mdoc, p); } - -int -mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok) +/* + * Parse free-form text, that is, a line that does not begin with the + * control character. + */ +static int +mdoc_ptext(struct roff_man *mdoc, int line, char *buf, int offs) { - struct mdoc_node *p; + struct roff_node *n; + char *c, *ws, *end; - assert(mdoc->first); - assert(mdoc->last); + n = mdoc->last; - p = mdoc_node_alloc(mdoc); + /* + * 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. + */ - p->line = line; - p->pos = pos; - p->type = MDOC_TAIL; - p->tok = tok; + 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; + } - return(mdoc_node_append(mdoc, p)); -} + /* + * 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 & 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'; -int -mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok) -{ - struct mdoc_node *p; + if (ws) + mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse, + line, (int)(ws-buf), NULL); - assert(mdoc->first); - assert(mdoc->last); + if (buf[offs] == '\0' && ! (mdoc->flags & MDOC_LITERAL)) { + mandoc_msg(MANDOCERR_FI_BLANK, mdoc->parse, + line, (int)(c - buf), NULL); - p = mdoc_node_alloc(mdoc); + /* + * 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; + } - p->line = line; - p->pos = pos; - p->type = MDOC_HEAD; - p->tok = tok; + roff_word_alloc(mdoc, line, offs, buf+offs); - return(mdoc_node_append(mdoc, p)); -} + if (mdoc->flags & MDOC_LITERAL) + 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. + */ -int -mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok) -{ - struct mdoc_node *p; + assert(buf < end); - assert(mdoc->first); - assert(mdoc->last); + if (mandoc_eos(buf+offs, (size_t)(end-buf-offs))) + mdoc->last->flags |= NODE_EOS; - p = mdoc_node_alloc(mdoc); + for (c = buf + offs; c != NULL; c = strchr(c + 1, '.')) { + if (c - buf < offs + 2) + continue; + if (end - c < 4) + break; + if (isalpha((unsigned char)c[-2]) && + isalpha((unsigned char)c[-1]) && + c[1] == ' ' && + isupper((unsigned char)(c[2] == ' ' ? c[3] : c[2])) && + (c[-2] != 'n' || c[-1] != 'c') && + (c[-2] != 'v' || c[-1] != 's')) + mandoc_msg(MANDOCERR_EOS, mdoc->parse, + line, (int)(c - buf), NULL); + } - p->line = line; - p->pos = pos; - p->type = MDOC_BODY; - p->tok = tok; - - return(mdoc_node_append(mdoc, p)); + return 1; } - -int -mdoc_root_alloc(struct mdoc *mdoc) +/* + * 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) { - struct mdoc_node *p; + struct roff_node *n; + const char *cp; + size_t sz; + enum roff_tok tok; + int sv; - p = mdoc_node_alloc(mdoc); + /* Determine the line macro. */ - p->type = MDOC_ROOT; + sv = offs; + tok = TOKEN_NONE; + for (sz = 0; sz < 4 && strchr(" \t\\", buf[offs]) == NULL; sz++) + offs++; + if (sz == 2 || sz == 3) + tok = roffhash_find(mdoc->mdocmac, buf + sv, sz); + if (tok == TOKEN_NONE) { + mandoc_msg(MANDOCERR_MACRO, mdoc->parse, + ln, sv, buf + sv - 1); + return 1; + } - return(mdoc_node_append(mdoc, p)); -} + /* Skip a leading escape sequence or tab. */ + switch (buf[offs]) { + case '\\': + cp = buf + offs + 1; + mandoc_escape(&cp, NULL, NULL); + offs = cp - buf; + break; + case '\t': + offs++; + break; + default: + break; + } -int -mdoc_block_alloc(struct mdoc *mdoc, int line, int pos, - int tok, struct mdoc_arg *args) -{ - struct mdoc_node *p; + /* Jump to the next non-whitespace word. */ - p = mdoc_node_alloc(mdoc); + while (buf[offs] == ' ') + offs++; - p->pos = pos; - p->line = line; - p->type = MDOC_BLOCK; - p->tok = tok; - p->args = args; + /* + * Trailing whitespace. Note that tabs are allowed to be passed + * into the parser as "text", so we only warn about spaces here. + */ - if (args) - (args->refcnt)++; + if ('\0' == buf[offs] && ' ' == buf[offs - 1]) + mandoc_msg(MANDOCERR_SPACE_EOL, mdoc->parse, + ln, offs - 1, NULL); - return(mdoc_node_append(mdoc, p)); -} + /* + * If an initial macro or a list invocation, divert directly + * into macro processing. + */ + n = mdoc->last; + if (n == NULL || tok == MDOC_It || tok == MDOC_El) { + mdoc_macro(mdoc, tok, ln, sv, &offs, buf); + return 1; + } -int -mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos, - int tok, struct mdoc_arg *args) -{ - struct mdoc_node *p; + /* + * 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. + */ - p = mdoc_node_alloc(mdoc); + 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; + } - p->line = line; - p->pos = pos; - p->type = MDOC_ELEM; - p->tok = tok; - p->args = args; + /* Normal processing of a macro. */ - if (args) - (args->refcnt)++; + mdoc_macro(mdoc, tok, ln, sv, &offs, buf); - return(mdoc_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_word_alloc(struct mdoc *mdoc, - int line, int pos, const char *word) -{ - struct mdoc_node *p; - - p = mdoc_node_alloc(mdoc); - - p->line = line; - p->pos = pos; - p->type = MDOC_TEXT; - p->string = xstrdup(word); - - return(mdoc_node_append(mdoc, p)); + return 1; } - -void -mdoc_node_free(struct mdoc_node *p) +enum mdelim +mdoc_isdelim(const char *p) { - if (p->string) - free(p->string); - if (p->args) - mdoc_argv_free(p->args); - free(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; + } -void -mdoc_node_freelist(struct mdoc_node *p) -{ + if ('\\' != p[0]) + return DELIM_NONE; - if (p->child) - mdoc_node_freelist(p->child); - if (p->next) - mdoc_node_freelist(p->next); + if (0 == strcmp(p + 1, ".")) + return DELIM_CLOSE; + if (0 == strcmp(p + 1, "fR|\\fP")) + return DELIM_MIDDLE; - mdoc_node_free(p); + return DELIM_NONE; } - -/* - * Parse free-form text, that is, a line that does not begin with the - * control character. - */ -static int -parsetext(struct mdoc *mdoc, int line, char *buf) +void +mdoc_validate(struct roff_man *mdoc) { - if (SEC_PROLOGUE == mdoc->lastnamed) - return(mdoc_perr(mdoc, line, 0, - "text disallowed in prologue")); - - if ( ! mdoc_word_alloc(mdoc, line, 0, buf)) - return(0); - - mdoc->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 are quickly ignored. */ - - 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 (isspace((unsigned char)buf[i])) - break; - } - - /* FIXME: be able to skip unknown macro lines! */ - - mac[i - 1] = 0; - - if (i == 5 || i <= 2) { - if ( ! macrowarn(m, ln, mac)) - goto err; - return(1); - } - - if (MDOC_MAX == (c = mdoc_tokhash_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] && isspace((unsigned char)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); }